EP1108076B1 - Dispositif de tri de fibres - Google Patents

Dispositif de tri de fibres Download PDF

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Publication number
EP1108076B1
EP1108076B1 EP99938113A EP99938113A EP1108076B1 EP 1108076 B1 EP1108076 B1 EP 1108076B1 EP 99938113 A EP99938113 A EP 99938113A EP 99938113 A EP99938113 A EP 99938113A EP 1108076 B1 EP1108076 B1 EP 1108076B1
Authority
EP
European Patent Office
Prior art keywords
fibre
clamping
free end
drum
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99938113A
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German (de)
English (en)
Other versions
EP1108076A1 (fr
Inventor
Thomas Brose
Heinz Clement
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Filing date
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Publication of EP1108076A1 publication Critical patent/EP1108076A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/08—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements
    • D01G9/10—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements using foraminous cylinders
    • 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
    • D01G19/14—Drawing-off and delivery apparatus
    • D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously
    • D01G19/20—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously operating to draw-off fibres intermittently
    • 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
    • D01G19/28—Air draught or like pneumatic arrangements

Definitions

  • the invention relates to a method and an apparatus for execution of the method for fiber sorting of a fiber structure of the supply means one Fiber sorting device is supplied.
  • the object of the invention is now to propose a method or a device, through which an increased degree of separation as well as an increased separation quality can be achieved compared to the known pneumatic methods.
  • the fiber structure is clamped transversely to its transport direction and that which is superior to the clamping point exposed end of an air flow, which is able to unclamped Remove components (e.g. short fibers, nits, dust, etc.) from the free end and dissipate.
  • remove components e.g. short fibers, nits, dust, etc.
  • the selection process (sorting process) is also carried out Air similar to the mechanical separation process on the comber on one open end of a fiber bandage (cotton, nonwoven, sliver, etc.).
  • a fiber bandage cotton, nonwoven, sliver, etc.
  • the fiber structure before reaching the sorting device into individual fiber packages with essentially in Single fibers stretched out in the longitudinal direction and aligned approximately parallel to one another is divided. This makes it possible in relation to the now existing lengthways stretched fibers exert a targeted clamping effect, which ensures that only a few long fibers are carried away during the sorting process.
  • a corresponding Discharge element discontinuous fiber packages from the free end of the fiber structure be formed.
  • Such processing of the fibers into thin fiber packages, or bundles of fibers is already known from the principle of the fibroliner.
  • the fiber bundles are ordered ends, with the short fibers in the front end (Clamping line) of the fiber packs can be found.
  • With a fiber mass prepared in this way it is possible to achieve a targeted clamping effect in the subsequent selection process (Sorting process) to separate the short fibers located in the head end.
  • the fiber packet during the sorting process at a predetermined distance from its front End which is exposed to the air flow is clamped.
  • This front one The ecartement of the combing machine is at a distance from the head end of the fiber package comparable. All the short fibers in the head area, which are from the nip are not retained, are dissipated when an air flow is applied.
  • the air flow - from the clamping point seen - in the direction of the free end of the fiber structure or the fiber package is directed.
  • the air flow can be generated by a vacuum and / or a pressure source become.
  • the banding can be done by stacking the sorted fiber packages respectively. This process corresponds to the soldering process in the conventional comber.
  • a method is proposed, wherein at least two fiber associations fed to the fiber sorting device and the ends of the fiber bundles exposed to a common air flow. It is advantageous if the Ends of the individual fiber bundles are brought together and air between the Blown ends of the fiber bandages - starting from the area of their clamping points becomes. This allows compressed air to be directed into the merged ends to blow in all short fibers inside the ends that are not clamped to capture and separate.
  • the invention is also solved by a device, wherein clamping devices are provided, which clamp the fiber structure at a distance from its free end and means are present which allow an air flow from the nip to the free Create the end of the fiber structure.
  • the feed means are formed from a drafting system and the means for producing individual fiber packages from a rotatably mounted roller exists, which forms a nip with a rotatably mounted screen drum, which the The delivery point of the drafting system is opposite.
  • the drafting system can be an apron drafting system.
  • the Take-off roller over a portion of its circumference, at least in the area of Clamping point is wrapped with a circumferentially mounted belt.
  • the belt has a connection to the clamping point Part of the sieve drum rests on the circumference of the sieve drum. This will ensures optimal guidance of the fiber package formed. That means the fiber package is forced, whereby the individual fibers their position during the Keep removal.
  • the sieve drum with surveys are spaced around their circumference. These surveys together with the belt, which is placed around the take-off roller, form a secure one Clamping point and ensure a safe transport of the in the clamping point held fibers.
  • the elevations can be made of elastic material in order to generate gentle clamping. It is also possible for those with the sieve drum cooperating take-off roller to be provided with an elastic coating.
  • the elevations on the sieve drum being omitted and be attached to the circumferential belt. It just has to be guaranteed that in the removal area between the screening drum and the Pulling roller a targeted clamping force can be applied to the fiber bundles pull out of the end of the presented fiber structure. In addition, the Safe further transport of the fiber packages guaranteed without the occurrence of compression become.
  • the distance between the bumps attached to the screen drum or belt must be greater than the length of the longest fiber in the fiber structure.
  • a rotatably mounted Separation drum is associated with several radially outward Suction slots is provided, the suction slots in the position of the smallest Distance to the outer circumference of the screening drum correspond to a vacuum space, which is arranged in the interior of the separation drum and with a Absorbent is connected.
  • the distance between the outer shell of the screening drum and the separation drum can be chosen so that at the time the creation of a negative pressure in the correspondingly positioned suction slot Clamping effect is exerted on the fiber package.
  • the clamping line generated is located at a distance from the front end of the fiber bundle, which means that all are not pinched Components (e.g. short fibers) are removed from the generated air flow in the suction slot become.
  • the negative pressure only has to be large enough so that the position and orientation of the individual fibers does not change in the fiber package during transport to the transfer point. Partially However, it may already be possible in this area by applying the negative pressure to extract short components such as dust from the fiber mass.
  • the take-off roller can be fitted with a clothing on its outer circumference his.
  • Another embodiment of the invention results when the fiber sorting device at least two fiber bundles are supplied via funding, and for each Fiber association movably mounted clamping elements are provided, which with a cooperate common management element.
  • At least one in the guide means Air nozzle is arranged, the opening - seen in the conveying direction of the fiber dressings - opens into the connection and between the clamping points and with a compressed air source connected is.
  • the air nozzle extends over the entire width of the supplied Fiber structures.
  • a variant is also possible, with several fiber bundles lying next to one another (e.g. slivers) are fed to the terminal point.
  • fiber structure can, for example, a non-woven fabric, a cotton wool, a fiber band or the like.
  • the advantageous further developments listed below can also refer to an execution, whereby only a single one Fiber dressing is fed to the clamping elements. (That is, without merging the ends of at least two fiber associations).
  • the guide element is provided with opposite guide troughs is, in each of which a conveyor roller dips, which serves as a funding.
  • the clamping elements form a pair of rollers forming a clamping line is subordinate.
  • This pull-off process is the tearing-off process of the combed beard at Equate comber.
  • At least one of the rollers of the Roller pair is provided as a hollow cylinder with outward openings, wherein the cavity is connected to a vacuum medium.
  • the outward facing Openings are only on a partial area of the circumference of the hollow cylinder available, so that during the tear-off process, on the one hand, a closed clamping line in the There is a pair of rollers and, on the other hand, suction of the removed good fibers is prevented.
  • Inside the hollow cylinder can be an additional fixed Aperture can be provided to close the outward opening causes.
  • a belt forming unit is preferably arranged downstream of the pair of rollers a sieve drum and a take-off roller which interacts with the sieve drum can be formed.
  • the interior of the screen drum with a vacuum source is connected and covers on the inside of the drum are provided that the interior except for a section before the nip Isolate from the ambient air between the screening drum and the take-off roller.
  • the belt formation unit can also be formed from a rotating conveyor belt be arranged transversely to the discharge direction of the pair of rollers. It is advantageous to provide the conveyor belt with air-permeable openings and at least to provide means below the delivery area on the conveyor belt Generation of a negative pressure. This ensures safe removal of the fiber packets guaranteed on the conveyor belt.
  • a device wherein at least one guide means extending along the free end of the fiber bandage is provided and the fiber sorting device is supplied with the fiber bandage via a conveying means which interacts with a guide element.
  • a movably mounted clamping element interacts with the guide element and forms a clamping point with the latter.
  • at least one air nozzle is provided in the guide element, the opening of which opens after the clamping point between the free end of the fiber structure and the guide means and is connected to a compressed air source. This makes it possible to generate an air flow between the free end of the fiber structure and the guide element, which can preferably be a plate.
  • the air flowing along the plate creates a negative pressure area which causes the free end to be drawn towards the surface of the plate and thus ensures that air flows through the free end.
  • the same effect has already been used in another form of application, namely for detaching a cotton end from a cotton roll, which was described, for example, in EP-A1 482 475.
  • the air flow is only used to detach the cotton web and not for selection, especially since there is no defined clamping line and the detachment process takes place at intervals of at least three hours.
  • the proposal to make the end of the guide means or the plate flexible makes it possible to move the free end of the plate into a different position for the blowing-out process or the transfer process of the blown-out end, which supports the processes described above, or relieved.
  • This adjustment can be carried out by the adjustment device which is also proposed and which acts on the free end of the plate.
  • Fig. 1 shows a drafting system 1, in which e.g. a sliver 10 is stretched.
  • the drafting system 1 is equipped with a pair of straps 2 as an apron drafting system.
  • the from the straps 2 released and warped sliver 10 is between a subsequent screening drum 3 and a roller 5, which faces the screening drum 3, issued.
  • the roller 5 is partially wrapped by a belt 6, the is placed over further rollers 7 and 8.
  • the roller 7 is schematic with a indicated drive 12 connected.
  • the screening drum 3 is rotatably mounted in guide rollers 14, wherein at least one of the guide rollers is connected to a drive 15.
  • Elastic clamping strips 18 are attached to the outer jacket of the screening drum 3, which run parallel to the axis of rotation of the screening drum.
  • a fixed channel 20 is arranged to the side the inner wall of the sieve drum is open.
  • the channel 20 is a schematic Line 21 shown connected to a vacuum source 22. This will in this Area of the screen cylinder jacket creates an air flow, which from the outside to works inside. This is shown schematically by the dashed arrows.
  • a separating drum 30 is rotatably arranged below the screening drum 3, which is provided with a fixed tube 32 inside.
  • the interior of the Pipe 32. is via the schematically illustrated line 33 with a vacuum source 34 connected.
  • the tube 32 is provided with a slot 36 in the axial direction with radially outwardly directed and circumferential air slots 38 around the tube 32 can correspond.
  • the separation drum 30 is designed so that the slot 36 is sealed off from the surroundings of the separating drum 30 if none Louvre 38 faces opening 36.
  • the separating drum 30 is in its guide rollers 40 shown schematically Position held, with at least one of the guide rollers 40 with a drive 42 in Connection is established. Seen in the direction of rotation of the separating drum 30, are behind each the air slots 38 elastic clamping elements attached to the outer jacket AU. The mode of operation of these elastic clamping elements 44 is described below discussed in more detail.
  • a removal roller 46 acts with the outer circumference AU of the separating drum 30 together, which e.g. with a set 47 (partially shown) on its circumference is provided.
  • the fibrous material 50 e.g. in the form of a Fiber fleece
  • the fibrous material 50 is transferred to a pair of draw-off rollers 51 and to a subsequent, transported further processing stage, not shown.
  • the drafting system 1 is e.g. a sliver 10 fed and warped in the drafting system.
  • the end E protruding from the straps 2 reaches the gap between the peripheral surface SU the screen drum 3 and the belt 6, which is guided on the roller 5 becomes.
  • One of the elastic clamping elements passes through the rotary movement of the sieve drum 3 18 in the described area and clamps the end E against the outer surface of the belt 6 in the area of the roller 5. Due to the fact that the peripheral speed the sieve drum 3 is greater than the conveying speed of the Strappy 2, the fibers are pulled out of the end E of the sliver 10, which are clamped between the terminal block 18 and the belt 6. This creates a thin fiber package 24 with longitudinally oriented individual fibers.
  • FIGS. 1a to 1c The process of forming the fiber bundle 24 is schematic in FIGS. 1a to 1c shown.
  • Fig. 1a shows the end E, which is released by the straps 2. about the clamping strips 18, a clamping line KL is generated and the clamping line KL opposite moved to the end E.
  • a thin point D is formed and with further displacement of the clamping point, a fiber bundle released from the end E. 24, as shown in Fig. 1c.
  • the head K of the fiber bundle 24 forms one fiber end-oriented fiber package, with the short fibers essentially in the range of the head K are.
  • the clamping effect between the belt 6 and the Clamping element 18 on the detached fiber packet 24 remains during the passage received between the rollers 5 and 8, whereby a targeted onward transport of the Fiber bundle 24 guaranteed without changing its structure (longitudinal fibers) becomes.
  • the fiber package 24 shown arrives with further transport or with further rotation the screening drum 3 in the delivery area A between the screening drum 3 and the subsequent separating roller 30.
  • By the simultaneous rotation of the separating roller 30 hits a clamping element 44 on the fiber package 24, causing a clamping arises between the outer jacket SU of the screening drum 3 and the terminal block 44.
  • the angular position during operation of the sieve drum 3 and the separating drum 30 is selected so that the clamping line generated by the terminal strip 44 at a distance from the front end K of the fiber package 24. This distance at the head end of the fiber package can be equated to the ecartement in the combing machine and can be changed by changing the angular position between the two Drums 3 and 30 can be set.
  • the end of the suction slot 38 overlaps the opening 36, whereby an air flow due to the negative pressure in the tube 32 takes place inwards. Thereby is the front end, or the head K of the fiber package 24, which the Exceeds the clamping point of the clamping element 44 and is drawn into the suction slot 38. All the components (short fibers) of the. Not clamped by the clamping element 44 end protruding into the suction slit 38 are now expelled by the air flow the fiber package 24 detached and discharged inward into the channel 32.
  • About the Vacuum source 34 is the material discharged into the channel 32 from the area of Pipe 32 disposed of.
  • the fixed disposal pipe 32 can be designed so that possible deposits of dirt between the fixed part and the rotating part Part of the separation drum are continuously sucked off.
  • a sliver F1 or F2 is fed into the area via the rollers 54 and 55 a conveyor trough M1, or M2 of a guide part 58 fed.
  • a conveyor trough M1, or M2 engages a feed roller 60 or 61.
  • the guide member 58 with an air slot 63 provided which has an opening 64.
  • the opening is in Fig. 4a) provided with a longitudinal slot 66 which extends across the width of the guide part 58 extends.
  • FIG. 4b several are next to one another for the passage of air lying holes 67 used.
  • 4c) shows a further embodiment, a larger number of holes 68 being provided for the passage of air.
  • the air slot 63 is via line 70 with a compressed air source 71 connected.
  • a clamping element 75, 76 Above the mouth area (opening 64 of the louvre 63) each have a clamping element 75, 76, a clamping effect on those transported downwards Slivers F1 and F2 and form a on the guide member 58 Terminal point K1 or K2.
  • the downward ends of the slivers F1 and F2 are brought together below the opening 63 and form a common free End of E1.
  • the air flow emanating from the air slot 63 is formed between the two superimposed and a common end E1 Ends of the slivers F1 and F2 directed. How this facility works will be discussed in more detail later.
  • a fixed diaphragm 88 is provided, which has an opening 90 is equipped.
  • a vacuum source 92 connected via line 93. From this it can be seen that as soon as the openings 89 and 90 are in register, from the end E1 deposited material can be sucked off via the interior of the aperture 88.
  • the roller 82 is designed as a full roller and can e.g. with a rubber cover for the peeling process. There is one below the pair of rollers 85
  • Belt forming unit 95 which consists of a rotating drum 97 and a with the sieve drum cooperating rubberized roller 99.
  • a fixed aperture 98 Within the screen drum 97 is a fixed aperture 98, the interior of which is connected to a vacuum source 102.
  • the aperture with openings 100 Mistake In the area in front of a terminal point 101 between the roller 99 and the screening drum 97 is the aperture with openings 100 Mistake.
  • the openings that allow the ambient air to be sucked in are in the shown example with a different cross-sectional area.
  • the Cross-sectional area of the opening 100 smallest, which of the clamping point 101 next one is. This means that the suction force on the removed fiber package FP is in this area is the smallest while increasing the cross section of the openings 100 grows. This is to ensure that the ends of the Place the removed FP fiber bundles securely on the outer circumference of the sieve drum 97.
  • an adjustable comb element 105 can be provided between the clamping elements 75, 76 and an adjustable comb element 105 between the clamping elements 75, 76 and an adjustable comb element 105 can be provided to the pair of rollers 85 two adjustable comb elements 106 and 107 is provided.
  • This comb element 105 can be compared to the fixed comb of a combing machine and then comes into engagement into the free end E1, if a fiber package from the roller pair 85 End E1 is pulled down. This makes it possible not yet through the Air flow completely eliminated short components and also contamination during Withhold the pulling process and also separate. That means the comb element 105 serves as an additional separation aid.
  • FIG. 5 shows another possibility of a banding unit 95, where instead a revolving conveyor belt 110 is used, which with air-permeable Openings 111 is provided. This is particularly the case in FIG. 6 remove.
  • the conveyor belt 110 is guided over two rollers 112, 113, wherein one of these rollers is connected to a drive, not shown.
  • On on the inside of the revolving conveyor belt 110 is an upwardly open channel 115 provided, which is connected via line 116 to a vacuum source 117.
  • This channel 115 is located in the area of the conveyor belt in which the from the fiber bundles 85 peeled off from the rollers are stacked on top of each other like roof tiles to form a closed sliver B.
  • the fiber tapes F1 and F2 fed via the rollers 54 and 55 (instead of the fiber tapes, nonwovens or cotton webs could also be fed) reach the area of the feed troughs M1 and M2, as a result of which they are picked up and transported on by the rollers 60 and 61, respectively.
  • Below the opening 63 of the guide part 58 the two ends of the slivers F1, F2 are brought together to form a single end E1.
  • the feed via the rollers 54, 55 and the rollers 60 and 61 is interrupted.
  • the clamping elements 75 and 76 are displaced (pivoted) in the direction of the guide part 58 via a mechanism (not shown) and form a clamping point K1, K2 on the fiber sliver F1 or F2.
  • An air pulse is then generated via the compressed air source 71 through the opening 64 of the air gap 63, which penetrates the free end E1 and releases non-clamped components (eg short fibers) from the end E1.
  • the air jet starting from the air slot 63, penetrates the end E1 in the region where the two ends of the slivers F1 and F2 overlap.
  • the guide part 58 including the rollers 54, 55 and 60, 61 can be displaced in the direction of the roller pair 85, so that the tip of the blown-out end E1 reaches the nip between the rollers 82 and 83. It is also possible, instead of moving the guide part 58 onto the pair of rollers 85, to move the pair of rollers 85 towards the guide part 58 in order to grasp the fibers of the free end E1. As soon as the end E1 is held in the clamping point of the pair of rollers 85, the comb shown in FIG. 3 can also be delivered. The opening 89 of the hollow body 87 is now in a position which is opposite the position shown in FIG. 2.
  • the pair of rollers 85 is now set in motion and a fiber bundle FP is withdrawn from the end E1, which is detected by the clamping point of the pair of rollers 85.
  • This fiber bundle FP is transferred downward into a clamping point 101 of the pair of rollers 95, the freed rear end of the fiber bundle FP resting on the screen drum 97, which is promoted by the openings 100, which are connected to the vacuum chamber of the screen 98.
  • the front end of the fiber package FP is connected to an end of a previously removed fiber package FP that is still located in the clamping point 101, or is stacked on top of it in the manner of a roof tile.
  • the band B thus formed becomes a downward position via the clamping point 101 Roller pair 104 removed for further transport.
  • the embodiment according to FIGS. 5 and 6 is attached instead of the pair of rollers 95 and has a circumferential and air-permeable conveyor belt 110.
  • the fiber package FP delivered downwards by the pair of rollers 85 is stacked on the ends of the previously delivered fiber packages and connected to them in the manner of a roof tile. This process is supported by the application of a negative pressure via the channel 105, as a result of which the free ends or the fiber sliver or fiber fleece B formed are kept positioned on the surface of the transport belt 110. It is also conceivable to arrange a plurality of fiber selection devices above the conveyor belt 106, which all deliver the selected fiber material onto the same conveyor belt and correspond to a common association.
  • FIG. 7 shows a further exemplary embodiment, which is designed similarly to the example in FIG. 2.
  • a guide plate 127 which faces the end E2 of the fiber composite F3.
  • One or more slivers F3 (or cotton, fleece, etc.) are conveyed here via the guide part 121, which is provided with a guide trough M3, under the action of a feed cylinder 120 in the direction of a clamping point K3.
  • the clamping point K3 is located in the tapered end of the guide part 121 and is generated by an adjustable clamping element 132.
  • the adjustment movement of the clamping element 132 is shown schematically with a double arrow.
  • an air slot 123 In the interior of the guide part there is an air slot 123, the opening of which ends below and in front of the clamping point K3.
  • the opening can be designed in accordance with the designs shown in FIG.
  • the air slot is connected via line 124 to a vacuum source 125. It is also conceivable, as shown in FIG. 3, to also provide an additional comb element 105 that can be delivered.
  • a slidably mounted plate 127 is attached below the guide part 121, the front end 122 of which is flexible. At this end engages a lever 126 which is connected to an adjustment mechanism, not shown. Using this lever 126, it is possible to transfer the end 122 into the positions shown in broken lines.
  • a guide element 128 is provided for the horizontal guidance of the plate 127 and in the rear region of the plate a cylinder 130 engages in the articulation point 129, which serves to move the plate.
  • a suction device 134 is provided above the plate 127, which serves to suction the separated waste material.
  • a horizontally displaceable pair of rollers 135 is then attached, which is provided for pulling fiber bundles out of the selected end E2.
  • the pair of rollers 135 is followed by a belt forming unit 137 with a rotatably mounted screen cylinder 138 and an aperture 139 arranged in the interior of the screen cylinder, which are arranged with openings 140 in the removal area in front of a clamping point 144.
  • the interior of the diaphragm 139 is connected to a vacuum source 147.
  • a roller 141 interacts with the sieve drum 138 and can be provided with a rubber coating.
  • the sliver B discharged from the screening drum is conveyed on by a subsequent pair of rollers 145.
  • the operation of this device is briefly described below:
  • the fiber material F3 is conveyed via the conveyor trough M3 and the feed cylinder 120 over the area of the clamping point K3.
  • the plate 127 takes the bold straight and foremost position. As soon as the protrusion of the free end has reached a certain value above the clamping point K3, the clamping element 132 is displaced in the direction of the guide part 121 and the fiber material F3 is clamped at the clamping point K3.
  • the funding has meanwhile been interrupted.
  • the front end of the plate 127 is shifted to the upper, dash-dotted position via the lever 126, whereby the free end E3 is also carried upward with the plate 127.
  • a compressed air flow is generated via the compressed air source 125 and via the air slot 123 and propagates in the direction of a suction device 134, which has meanwhile been switched on. Due to the air jet guided along the surface of the plate 127, the end E2 (as already described above) is drawn onto the plate and completely blown through with the air flow. The short fibers detached from the end E2 and other detached components are sucked off via the suction channel 134.
  • the compressed air supply is now cut off again and the clamping element 132 is raised again from the guide part 121.
  • the lever 122 is used to pivot the end 122 of the plate 127 into the position shown in dash-dot lines below and to move it rearward via the cylinder 130.
  • This peeling process is comparable to the tearing process in a conventional combing machine. After a fiber package has been pulled out of the free end E2 in this way, the pair of rollers is shifted in the direction of a subsequent band forming unit 137.
  • this fiber package is placed on the end of a previously delivered fiber package in the manner of a roof tile (soldering process) and connected to it at the clamping point 144.
  • the sliver B thus formed then arrives at a pair of rollers 145, which delivers the material, for example, to a subsequent and not shown receiving device (can). Meanwhile, the end of the plate 127 has been moved back to the extended and forward position; the selection and the subsequent pulling process starts again.

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  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (46)

  1. Procédé utilisé pour le triage de fibres d'un ensemble de fibres (10,F1,F2) qui est dirigé vers un arrangement de triage de fibres (30,38,75,76,58,63),
    caractérisé par le fait que
    l'ensemble de fibres (10,F1,F2) est pincé transversalement à sa direction de transport, et que l'extrémité libre (E1) dépassant le lieu de pincement (K1,K2), est soumise à un courant d'air, lequel est à même d'extraire, de l'extrémité libre, des parties non pincées, comme par exemple, des fibres courtes, des boutons, de la poussière, etc., et de les éloigner.
  2. Procédé selon revendication 1,
    caractérisé par le fait que,
    avant d'atteindre l'arrangement de triage (30), l'ensemble de fibres (10) est décomposé en paquets de fibres individuels (24), ayant des fibres individuelles qui s'étendent essentiellement dans le sens longitudinal, et sont orientées presque parallèles les unes aux autres.
  3. Procédé selon revendication 2,
    caractérisé par le fait que
    les paquets de fibres (24), se suivant à distance l'un après l'autre, sont formés de fibres sortant de l'extrémité libre (E) de l'ensemble de fibres, par tirage discontinu.
  4. Procédé selon l'une des revendications 2 à 3,
    caractérisé par le fait que,
    - vu dans le sens de transport du paquet de fibres (24) -, le paquet de fibres, lors du processus de triage, est pincé à une distance prédéterminée par rapport à son extrémité antérieure (K), laquelle est exposée au courant d'air.
  5. Procédé selon l'une des revendications 1 à 3,
    caractérisé par le fait que,
    - vu depuis le lieu de pincement (K1,K2) -, le courant d'air est dirigé en direction de l'extrémité libre (E1) de l'ensemble de fibres (F1,F2), respectivement du paquet de fibres (24).
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé par le fait que
    l'extrémité libre (E1), dépassant le lieu de pincement (K1,K2), est soumise à un courant d'air aspirant.
  7. Procédé selon l'une des revendications 1 à 5,
    caractérisé par le fait que
    l'extrémité libre (E1), dépassant le lieu de pincement (K1,K2), est soumise à un courant d'air de pression.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé par le fait que,
    après le processus de triage, la force de pincement est libérée dans le lieu de pincement (K1,K2), et la matière fibreuse triée est transférée dans une unité de formation de ruban (95) y faisant suite, pour la formation d'un ruban.
  9. Procédé selon l'une des revendications 2 à 7,
    caractérisé par le fait que
    la formation de ruban est effectuée par superposition partielle des paquets de fibres triés (24).
  10. Procédé selon revendication 1,
    caractérisé par le fait qu'au moins deux ensembles de fibres (F1,F2) sont dirigés simultanément vers l'arrangement de triage de fibres, et les extrémités des ensembles de fibres sont exposées à un courant d'air commun.
  11. Procédé selon revendication 10,
    caractérisé par le fait que les extrémités des ensembles de fibres (F1,F2) sont rassemblées, et de l'air est soufflé entre les extrémités des ensembles de fibres - à partir des lieux de pincement (K1,K2).
  12. Procédé selon revendication 10,
    caractérisé par le fait qu'au moins un courant d'air de pression supplémentaire est produit à la suite du lieu de pincement respectif (K1,K2), dans la direction de l'extrémité libre, et sur les surfaces extérieures des extrémités rassemblées (E1) des ensembles de fibres (F1,F2).
  13. Dispositif utilisé pour le triage de fibres d'un ensemble de fibres (10,F1,F2) qui est dirigé vers un arrangement de triage de fibres, à l'aide de moyens d'alimentation (1,3,54,55,60,61,58)
    caractérisé par le fait que
    des dispositifs de pincement (44,75,76) sont prévus, lesquels pincent l'ensemble de fibres (24,F1,F2) à distance par rapport à son extrémité libre (E1), et des moyens (33,34,36,38,63,70,71) existent, lesquels produisent un courant d'air allant depuis le lieu de pincement (K1,K2) vers l'extrémité libre (E1) de l'ensemble de fibres, afin d'extraire, de l'extrémité libre, des parties non pincées, comme par exemple, des fibres courtes, des boutons, de la poussière, etc., et de les éloigner.
  14. Dispositif selon revendication 13,
    caractérisé par le fait que
    des moyens (18,5,6) sont prévus, afin de décomposer progressivement l'ensemble de fibres (10), livré par les moyens d'alimentation (1), en paquets de fibres individuels (24) ayant des fibres individuelles s'étendant essentiellement dans le sens longitudinal, et orientées parallèles les unes aux autres, et avec des moyens (3) servant au transfert des paquets de fibres vers un arrangement de triage (30) y faisant suite.
  15. Dispositif selon revendication 14, caractérisé par le fait que
    les moyens d'alimentation sont formés par un train d'étirage (1), et les moyens pour la production de paquets de fibres individuels (24) sont constitués par un rouleau (5) maintenu d'une manière rotative, lequel, avec un tambour perforé (3) maintenu d'une manière rotative, forme un lieu de pincement qui est situé vis-à-vis du lieu de livraison du train d'étirage (1).
  16. Dispositif selon revendication 15,
    caractérisé par le fait que
    le rouleau (5) est entouré, sur une zone partielle de sa circonférence, au moins dans la zone du lieu de pincement, par une lanière (6) maintenu d'une manière circulante.
  17. Dispositif selon revendication 16, caractérisé par le fait que
    la lanière (6) s'appuie sur la circonférence du tambour perforé (3), sur une section partielle du tambour perforé, faisant suite au lieu de pincement.
  18. Dispositif selon l'une des revendications 15 à 17,
    caractérisé par le fait que
    le tambour perforé (3) est pourvu de protubérances (18), réparties à distance sur sa circonférence.
  19. Dispositif selon l'une des revendications 15 à 18,
    caractérisé par le fait que
    le train d'étirage (1) est un train d'étirage à lanières.
  20. Dispositif selon l'une des revendications 15 à 19,
    caractérisé par le fait qu'un tambour séparateur (30), maintenu d'une manière rotative, est adjoint au tambour perforé (3), parallèle à son axe, tambour séparateur qui est pourvu de plusieurs fentes d'aspiration (38) dirigées d'une manière radiale vers l'extérieur, et où les fentes d'aspiration, dans la position de la plus petite distance par rapport à la circonférence extérieure (SU) du tambour perforé (3), correspondent avec une chambre en dépression (32), laquelle est disposée d'une manière fixe à l'intérieur du tambour séparateur (30), et est reliée avec un moyen aspirant (34).
  21. Dispositif selon revendication 20,
    caractérisé par le fait que
    - vu dans le sens de rotation du tambour séparateur (30) -, des protubérances élastiques (44) sont prévues en connexion avec chacune des ouvertures des fentes d'aspiration (38), sur la circonférence extérieure (AU) du tambour séparateur (3) qui, dans la position de la plus petite distance entre le tambour perforé (3) et le tambour séparateur (30), exercent un effet de pincement sur la circonférence extérieure (SU) du tambour perforé.
  22. Dispositif selon l'une des revendications 20 à 21,
    caractérisé par le fait que,
    au moins dans une zone partielle comprise entre la zone où la lanière (6) s'appuie sur la circonférence extérieure (SU) du tambour perforé (3) et la zone de transfert (A) sur le tambour séparateur (30), des moyens (20,21,22) sont prévus pour produire une dépression à l'intérieur du tambour perforé (3).
  23. Dispositif selon l'une des revendications 20 à 22,
    caractérisé par le fait que,
    parallèle à l'axe du tambour séparateur (30), un rouleau récepteur (46), maintenu d'une manière rotative, est prévu d'une manière tangente à la circonférence extérieure (AU) du tambour séparateur (30).
  24. Dispositif selon revendication 23,
    caractérisé par le fait que
    le rouleau récepteur (46) est pourvu d'une garniture (47), sur sa circonférence extérieure.
  25. Dispositif selon revendication 13,
    caractérisé par le fait qu'au moins deux ensembles de fibres (F1,F2) sont dirigés vers l'arrangement de triage de fibres, via des moyens d'alimentation (54,55,60,61), et que des éléments de pincement (75,76) sont prévus, maintenus d'une manière mobile, pour chaque ensemble de fibres, lesquels coopèrent avec un élément de guidage commun (58).
  26. Dispositif selon revendication 25,
    caractérisé par le fait que,
    - vu dans le sens de transport des ensembles de fibres (F1,F2) -, au moins une buse d'air (63) est disposée dans le moyen de guidage (58), buse d'air dont l'ouverture (64) débouche, en fin, entre les lieux de pincement (K1,K2), et est reliée à une source d'air comprimé (71).
  27. Dispositif selon l'une des revendications 25 à 26,
    caractérisé par le fait que
    l'élément de guidage (58) est pourvu d'auges de guidage (M1,M2) en situation opposée, et dans chacune d'elles un rouleau de transport (60,61) pénètre et sert de moyen de transport.
  28. Dispositif selon l'une des revendications 25 à 27,
    caractérisé par le fait que
    des buses d'air (77,78) sont intégrées dans les éléments de pincement, dans la zone et à la suite des surfaces de pincement des éléments de pincement (75,76), et se tiennent en liaison avec une source d'air comprimé (81).
  29. Dispositif selon l'une des revendications 24 à 28,
    caractérisé par le fait qu'une paire de rouleaux (85) formant une ligne de pincement, est disposée après les éléments de pincement (75,76).
  30. Dispositif selon revendication 29, caractérisé par le fait qu'au moins un des rouleaux (82,83) de la paire de rouleaux (85) est prévu comme cylindre creux (87), pourvu d'ouvertures (89) dirigées vers l'extérieur, et où l'espace creux est relié avec un moyen de dépression (92).
  31. Dispositif selon l'une des revendications 29 à 30,
    caractérisé par le fait qu'une unité de formation de ruban (95) est disposée après la paire de rouleaux (85).
  32. Dispositif selon revendication 31,
    caractérisé par le fait que
    l'unité de formation de ruban (95) est formée par un tambour perforé (97) et un rouleau d'extraction (99) agissant conjointement avec le tambour perforé.
  33. Dispositif selon revendication 32,
    caractérisé par le fait que
    l'espace intérieur du tambour perforé (97) est relié avec une source de dépression (102), et des recouvrements (98) sont prévus sur la face intérieure du tambour perforé (97), lesquels cloisonnent l'espace intérieur par rapport à l'air environnant, à l'exception d'une section se trouvant avant le lieu de pincement (101), et située entre le tambour perforé (97) et le rouleau d'extraction (99).
  34. Dispositif selon l'une des revendications 25 à 33,
    caractérisé par le fait qu'un élément peigneur (105) pouvant être avancé, est prévu entre les éléments de pincement (75,76) et la paire de rouleaux.
  35. Dispositif selon l'une des revendications 29 à 34,
    caractérisé par le fait que
    le moyen de guidage (58) est maintenu d'une manière déplaçable, dans la direction de la paire de rouleaux (85).
  36. Dispositif selon revendication 31,
    caractérisé par le fait que
    l'unité de formation de ruban (95) est formée par une bande transporteuse circulante (110), laquelle est disposée transversalement par rapport au sens d'évacuation de la paire de rouleaux (85).
  37. Dispositif selon revendication 36,
    caractérisé par le fait que
    la bande transporteuse (110) est pourvue d'ouvertures (111), perméables à l'air, et des moyens (115,116,117) sont prévus, au moins en dessous de la zone de livraison sur la bande transporteuse, afin de produire une dépression.
  38. Dispositif selon revendication 13,
    caractérisé par le fait qu'au moins un moyen de guidage (127) est prévu, s'étendant le long de l'extrémité libre (E2) de l'ensemble de fibres (F3), et l'ensemble de fibres (F3) est guidé vers l'arrangement de triage de fibres, via un moyen de transport (120) qui agit conjointement avec un élément de guidage (121).
  39. Dispositif selon revendication 38,
    caractérisé par le fait qu'au moins un élément de pincement (132), maintenu d'une manière mobile, est prévu, lequel agit conjointement avec l'élément de guidage (121).
  40. Dispositif selon l'une des revendications 38 à 39,
    caractérisé par le fait qu'au moins une buse d'air (123) est prévue dans l'élément de guidage (121), dont l'ouverture débouche, en fin, dans le lieu de pincement (K3), entre l'extrémité libre (E2) de l'ensemble de fibres (F3) et le moyen de guidage (127), et est reliée avec une source d'air comprimé (125).
  41. Dispositif selon l'une des revendications 38 à 40,
    caractérisé par le fait que
    le moyen de guidage (127) est formé par une plaque déplaçable dans le sens longitudinal.
  42. Dispositif selon l'une des revendications 38 à 41,
    caractérisé par le fait que
    l'extrémité (122) du moyen de guidage (127), orientée dans la direction de l'extrémité libre (E2) de la matière fibreuse (F3), est flexible.
  43. Dispositif selon revendication 42,
    caractérisé par le fait que
    l'extrémité libre flexible (122) du moyen de guidage (127) est reliée avec un arrangement de déplacement (126).
  44. Dispositif selon l'une des revendications 38 à 43,
    caractérisé par le fait que
    des arrangements d'aspiration (134) sont disposés dans la zone de l'extrémité libre (122) du moyen de guidage (127), laquelle se trouve en face de l'extrémité libre (E2) de l'ensemble de fibres (F3).
  45. Dispositif selon l'une des revendications 38 à 44,
    caractérisé par le fait qu'une paire de rouleaux déplaçable (135) est disposée après le lieu de pincement.
  46. Dispositif selon revendication 45,
    caractérisé par le fait qu'une unité de formation de ruban (137) est disposée après la paire de rouleaux (135).
EP99938113A 1998-08-28 1999-08-23 Dispositif de tri de fibres Expired - Lifetime EP1108076B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH176698A CH693344A5 (de) 1998-08-28 1998-08-28 Fasersortiereinrichtung.
CH176698 1998-08-28
PCT/CH1999/000385 WO2000012794A1 (fr) 1998-08-28 1999-08-23 Dispositif de tri de fibres

Publications (2)

Publication Number Publication Date
EP1108076A1 EP1108076A1 (fr) 2001-06-20
EP1108076B1 true EP1108076B1 (fr) 2003-03-26

Family

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Application Number Title Priority Date Filing Date
EP99938113A Expired - Lifetime EP1108076B1 (fr) 1998-08-28 1999-08-23 Dispositif de tri de fibres

Country Status (6)

Country Link
EP (1) EP1108076B1 (fr)
CN (1) CN1156620C (fr)
AU (1) AU5275799A (fr)
CH (1) CH693344A5 (fr)
DE (1) DE59904761D1 (fr)
WO (1) WO2000012794A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006012758A1 (fr) * 2004-08-05 2006-02-09 Maschinenfabrik Rieter Ag Peigneuse
DE102008004098A1 (de) * 2007-06-29 2009-01-02 TRüTZSCHLER GMBH & CO. KG Vorrichtung zur Fasersortierung bzw. -selektion eines Faserverbandes aus Textilfasern, insbesondere zum Kämmen, der über Zuführmittel einer Fasersortiereinrichtung, insbesondere Kämmeinrichtung zugeführt wird
CN104499099B (zh) * 2014-11-03 2017-02-15 江苏工程职业技术学院 一种毛纤维筛选机
IT201900005608A1 (it) * 2019-04-11 2020-10-11 Marzoli Machines Textile Srl Pettinatrice di una linea di preparazione alla filatura
CN113502576B (zh) * 2021-08-17 2022-08-02 安徽东锦资源再生科技有限公司 再生聚酯短纤的环保型卷曲装置及其方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1294654A (en) * 1968-08-16 1972-11-01 Gordon Roberts An improvement in or relating to the separation of the fibres of fibrous materials according to length
US3766607A (en) * 1971-08-24 1973-10-23 Curlator Corp Apparatus for transferring and compacting fiber material
IN171142B (fr) * 1987-03-19 1992-08-01 Japan Cotton Technical And Eco
CH674854A5 (fr) * 1987-05-12 1990-07-31 Peyer Ag Siegfried
CH675886A5 (fr) * 1988-11-23 1990-11-15 Rieter Ag Maschf
GB8901416D0 (en) * 1989-01-23 1989-03-15 Lawrence Carl A Preparation of fibres for spinning
DE29711309U1 (de) * 1997-06-28 1997-11-06 Wegner, Wolfgang, 19306 Neustadt-Glewe Weiche für die Sortierung von Fasermaterial

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Publication number Publication date
DE59904761D1 (de) 2003-04-30
EP1108076A1 (fr) 2001-06-20
CN1156620C (zh) 2004-07-07
WO2000012794A1 (fr) 2000-03-09
AU5275799A (en) 2000-03-21
CN1324416A (zh) 2001-11-28
CH693344A5 (de) 2003-06-13

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