EP0412256B1 - Method and arrangement for automatically piecing - Google Patents

Method and arrangement for automatically piecing Download PDF

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Publication number
EP0412256B1
EP0412256B1 EP90110858A EP90110858A EP0412256B1 EP 0412256 B1 EP0412256 B1 EP 0412256B1 EP 90110858 A EP90110858 A EP 90110858A EP 90110858 A EP90110858 A EP 90110858A EP 0412256 B1 EP0412256 B1 EP 0412256B1
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EP
European Patent Office
Prior art keywords
rollers
conveyor
pair
collecting funnel
web
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
EP90110858A
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German (de)
French (fr)
Other versions
EP0412256A1 (en
Inventor
Jürgen Dipl.-Ing. Klüttermann
Ferdinand Dipl.-Ing. Leifeld
Paul Georg Dipl.-Ing. Teichmann
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.)
Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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Publication of EP0412256A1 publication Critical patent/EP0412256A1/en
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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
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/58—Sliver or like rubbing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/76—Depositing materials in cans or receptacles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method for automatically piecing a pile of fibers to a sliver z. B. in a card, in which the web of fibers released by a roller device is at least partially collected and transported by a web transport device, in the start-up phase the unusable web is fed to a conveyor and the useless web emerging from the conveyor is removed, in the piecing phase the usable web is removed by one Contains funnel and formed into a sliver and the sliver emerging from the funnel is fed to a pair of draw-off rollers and comprises an apparatus for performing the method.
  • the fiber web is collected by two take-off belts, to form a preliminary strip compressed and delivered by two transfer rollers (conveyor rollers).
  • a two-part segment judge is in an open position so that there is no contact with the supporting strip.
  • the transfer rollers are driven at this time at a first speed that is faster than the peripheral speed of the take-off belts, whereby fiber is removed from the sliver.
  • the peripheral speed of the transfer rollers increases by 200 to 300%. This causes excessive warping of the fibers between the transport rollers of the take-off belts and the transfer rollers, as a result of which the unusable fiber parts of the sliver are separated and eliminated in the starting phase.
  • the sliver is then delivered to the jug.
  • the two parts of the segment funnel are closed in order to enclose the pre-strip in order to prevent expansion over the surface of the transfer rollers, ie the segment funnel does not take part in the formation or tapering of the sliver part.
  • a disadvantage of this method is that the end of the sliver can tear off completely when the large flakes or lumps are torn off, so that the flow of fiber material is interrupted and the re-introduction of the trailing pre-strip into the transfer rollers rotating at high speed is no longer successful. An undesirable build-up or constipation can occur.
  • the band formation in the air funnel should be done pneumatically; this is very complex in terms of system and leads, in particular, to incorrect air flows to operational disruptions, so that fully automatic piecing with the known method is not possible in a safe manner.
  • the invention is based on the object of creating a method of the type described at the outset which avoids the disadvantages mentioned, which in particular is simpler in terms of the system and enables automatic piecing in a safe manner and in a trouble-free manner.
  • the unusable fibrous web is promoted at a uniform speed in the starting phase, its safe onward transport and disposal is possible according to the invention without interruption.
  • the complex, speed-controlled sharpening of a pre-strip is eliminated; such a sharpening is not possible at all because of the continuous flow of fiber material.
  • the further measure, after which the sliver is formed in the piecing phase (second step) by collecting or mechanically concentrating the usable fiber pile also advantageously starts the tapering: while the fiber pile extending in the width direction enters the collecting funnel a narrow, compressed fiber sliver from the collecting funnel. Another advantage is that the sliver, z. B.
  • the method according to the invention advantageously enables automatic piecing in a safe and trouble-free manner.
  • the useless fiber web emitted by the conveying device is expediently suctioned off.
  • the invention also includes an advantageous device for performing the method according to the invention, in which a roller device, for. B. customer, doctor roller, squeeze rollers or the like, is provided, which is arranged downstream of a pile transport device for collecting and further transport of the pile, in which a conveyor is provided after the pile transport device and a funnel with a pair of draw rollers is arranged below the pile transport device which is characterized in that the pile transport device is arranged in a vertical or oblique direction below the roller device, the conveyor device is arranged below the pile transport device, the hopper is designed as a collecting funnel and is arranged below the pile transport device and above the conveyor device and the pair of draw-off rollers and the collecting hopper , The conveyor and / or the pair of draw rollers are movable relative to each other.
  • a roller device for. B. customer, doctor roller, squeeze rollers or the like
  • the fiber material advantageously falls down, whereby the transport and conveying process are sustainably supported.
  • a significant simplification is achieved in terms of design.
  • the pile transport device preferably has at least one pair of rollers.
  • the pile transport device preferably has at least one pile guide element with stationary guide surfaces.
  • the pile transport device advantageously has at least one conveyor belt.
  • the pile transport device is expediently movable in a direction perpendicular to the roller device.
  • the conveyor device is preferably a pair of conveyor rollers.
  • the conveyor device is preferably a suction device.
  • the conveyor is advantageously a slide plate or the like.
  • a fiber removal device e.g. B. suction device assigned.
  • the take-off roll preferably comprises a tongue and groove roll.
  • the collecting funnel expediently has at least one movable wall surface.
  • the collecting funnel advantageously has a continuously open longitudinal slot in the side wall, to which a closure element is assigned.
  • the collecting funnel is expediently assigned a clamping device for severing the sliver.
  • the hopper is movable in a vertical direction with respect to the conveyor rollers and the pair of take-off rollers.
  • the collecting funnel can preferably be moved back and forth in the horizontal direction above the pair of conveying and removal rollers.
  • the pair of conveying and extraction rollers can advantageously be moved back and forth below the collecting hopper in the horizontal direction.
  • the conveyor and the take-off roller pair are expediently arranged coaxially to one another.
  • Fig. 1 shows a known card, e.g. B. Trützschler EXACTACARD DK, with feed roller 1, dining table 2, licker-in 3, drum 4, customer 5, doctor roller 6, squeeze rollers 7, 8, fleece guide element 9, belt funnel 10, take-off rollers 11a, 11b, belt guide tube 12, can 13, can 14 and Revolving cover 15.
  • the curved arrows in the rollers indicate the direction of rotation.
  • the fleece guide element 9 serving as a flock transport device for collecting and further transporting the fiber web 19 emerging from the squeeze rolls 7, 8 is arranged almost vertically below the squeeze rolls, with a pair of rolls 16a, 16b being assigned to the fleece guide element 9.
  • a pair of conveyor rollers (17a, 17b) (FIG. 2) is arranged below the fleece guide element 9 as the conveying device.
  • the device according to the invention including the squeeze rollers 7, 8, is arranged above the can 14.
  • the two-part fleece guide element 9a, 9b with immovable guide surfaces and the rolls 16a, 16b are arranged vertically below the squeeze rolls 7, 8.
  • the pair of conveyor rollers are vertical below the fleece guide element 9a, 9b and the rollers 16a, 16b 17a, 17b and the pair of discharge ramps 11a, 11b are arranged horizontally coaxially with one another.
  • a suction pipe 18 (connected to a suction source, not shown) is connected to the outlet of the conveyor rollers 17a, 17b.
  • the collecting funnel 10 is arranged, which can be changed in position in the horizontal direction.
  • start phase start-up phase
  • the pile pieces are collected according to FIG. 2a by the fleece guide device 9, the guide surfaces 9a, 9b of which form a triangle which is open at the bottom, are gripped by the two rollers 16a, 16b located at the open exit of the triangle and are fed to the pair of conveyor rollers 17a, 17b.
  • the pile pieces released by the conveyor rollers 17a, 17b enter the suction pipe 18 and are removed from there.
  • start-up phase of the card is over, e.g. B. swivel after 10 to 15 seconds.
  • the guide surfaces 9a, 9b and the rollers 16a, 16b upwards in the direction of the squeeze rollers 7, 8 (see arrows A to D in Fig. 2a).
  • the two halves 10a, 10b of the collecting funnel 10 move together according to FIG. 2c and comprise the fiber pile 19, the fiber pile 19 being converted into a fiber band 20 by constriction in the collecting funnel 10 (cf. FIG. 7b).
  • the collecting funnel 10 is then lifted upwards (arrow U) and the sliver 20 is cut at the end of the collecting funnel 20 by clamping (see FIG. 7b). While the conveyor rollers 17a, 17b continue to run, so that the sliver 20 breaks.
  • the collecting funnel 10 according to FIG.
  • the take-off rollers 11a, 11b grasp the end of the sliver 10 protruding from the outlet of the collecting hopper 10 and continuously pull the sliver 20 out of the collecting hopper 10. Finally, the sliver 20 is introduced into the can 14 via the can 13 through the deposit tube 12.
  • a, b, c, d and e is the flow of unusable fiber web 19, which is present in the starting phase.
  • a ', b', c 'and d' the material flow of the usable fiber web 19 is designated, which is present in the piecing phase (after the start phase).
  • f the direction of the fiber flow of the sliver 20 is designated.
  • a guide element consisting of two guide surfaces 21a, 21b which are open at the bottom and which form a shield to the side, below which a collecting channel 22 is provided, to which a suction pipe 23 for the unusable fiber web is connected is.
  • 4a shows the suction device 22, 23 in the starting phase. After completion of the starting phase, the suction device 22, 23 (in a manner not shown) below the squeeze rollers or the guide surfaces 21a, 21b is removed, the longitudinal slot 21c open below between the guide surfaces 21a, 21b is closed from two sides by two masking tapes 24a, 24b except for an opening 25 in the middle.
  • the usable fiber web 19 emerging from the opening 25 is transported further downwards by the moving rollers 16a, 16b, gripped from the side by the two halves of the collecting funnel 10a, 10b and - after moving the halves 10a, 10b together - to form a fiber band 20 shaped.
  • the suction pipe 23 is designed as a suction switch with two outputs 23a, 23b, the output 23b by a closure element, for. B. a slide 26 is separated from the output 23a, as long as unusable fiber web flows and is switched on as soon as usable fiber web is conveyed.
  • the collecting funnel 10 has four obliquely opposite side surfaces 10c to 10f.
  • the side surfaces 10c and 10d form a longitudinal slot 10g which is open at the bottom.
  • the side surfaces 10c and 10d can be displaced in the direction of the arrows 1, K and L, M, as a result of which the width of the slot 10g can be adjusted.
  • the side surfaces 10e and 10f can be displaced in the direction of the arrows O, P and Q, R, as a result of which the size of the inlet opening and the outlet opening 10h of the collecting funnel 10 can be changed.
  • the movement of the side surfaces 10c, 10f corresponds to the movement of the halves 10a, 10b of the collecting funnel 10 shown in FIGS. 2b, 2c and 3b, 3c.
  • FIG. 7a shows how the sliver 20 is pressed by the clamping element 27a against an opposite inner wall at the outlet of the collecting funnel 10 (corresponding to the working step in FIGS. 2d, 3d). Because the conveyor rollers 17a, 17b continue to run, the sliver 20 tears off.
  • FIGS. 3c, 3d shows a holding element 30, in the form of a lever arm, at one end of which the collecting funnel 10 is fastened and the other end of which is mounted on a rotary bearing 31.
  • the pivot bearing 31 is fastened by means of a bearing element 32 in a horizontal direction 33 which is displaceable by the arrows V, Z, as a result of which the collecting funnel 10 can be moved in the horizontal direction (see FIGS. 2e, 3e).
  • two conveyor belts 34a, 34b are provided below the squeeze rollers 7, 8 (rotation in the direction of the arrows 7a, 8a), the horizontal surfaces of which are movable in the direction of the arrows 35, 36, 37, 38.
  • the deflection rollers 39, 40 run in the direction of the arrows 41 and 42, respectively.
  • Air shielding elements 21a, 21b pointing downward are present between the squeeze rollers 7, 8 and the conveyor belts 34a, 34b.
  • the conveyor belts 34a, 34b are stationary both in the piecing phase and in the operating phase.
  • two rollers 43, 44 which rotate in the direction of arrows 45 and 46, are present between the mutually facing deflection rollers 39, 40 of the conveyor belts 34a, 34b.
  • the conveyor belts 34a, 34b and the roller 43, 44 are arranged horizontally in one plane.
  • the fibrous web 47 emerges from the gap between the rollers 7, 8 at a slow speed, strikes the upper surfaces of the conveyor belts 34a, 34b from above, is conveyed in the direction of the horizontal arrows 35 and 37, and passes through the gap between the Rolls 43, 44 downwards.
  • the fast-running fibrous web 47 has approximately a triangular shape, the fibrous web 47 coming from the squeezing rollers 7, 8 directly into the gap between the rollers 43, 44 without touching the conveyor belts 34a, 34b.
  • the conveyor belts 34a, 34b are shifted vertically downward from the position shown in FIGS. 10a, 10b in accordance with an appropriate design.
  • the surfaces of the conveyor belts 34a, 34b are preferably movable in the direction of the arrows 35 'to 38', ie Direction of movement is reversed in comparison to FIG. 10a, with impurities falling down from the fiber web 47, e.g. B. trash, leaf and stem remains u. Like. Can be transported away from the conveyor belts 34a, 34b.
  • FIG. 11 shows an embodiment in which the rollers 43 ', 44' have moved apart in the piecing phase (FIG. 11a).
  • the rollers 43, 44 are moved together in the direction of the arrows 48, 49 (by a device, not shown).
  • the collecting funnel 10 is arranged in a stationary manner above the conveyor rollers 17 and the feed rollers 11.
  • the movable sliding elements 10e, 10f are shifted to the left, as shown in FIG. 12a, in such a way that the unusable fiber material gets into the conveyor rollers 17.
  • the sliding elements 10e, 10f are shifted to the right, as shown in FIG. 12b, in such a way that the good material (fiber sliver) gets into the take-off rollers 11a, 11b.
  • the tape exit opening 10h see FIG. 6.
  • two conveyor belts 50, 51 are provided, which run around deflection rollers 39 ', 39' ', 39 ′′′ or 40', 40 '', 40 ′′′.
  • the deflection rollers 39 ′′′, 40 ′′′ in the piecing phase (Fig. 13a) are shifted in the operating phase (Fig. 13b) in such a way that they are arranged vertically below the deflection rollers 39 ', 40', so that the space 52 between the conveyor belts 50, 51 change from an oblique course to a vertical course.
  • the invention comprises both an embodiment in which the end of the strip emerging from the collecting hopper 10 is introduced into the roller gap of the take-off rollers 11 by local displacement of the entire collecting hopper 10 and by local displacement of wall surfaces within the stationary collecting hopper.
  • the conveyor rollers 43, 44 with their outlet opening 53 and the collecting funnel 10 are arranged vertically above the pair of conveyor rollers 17a, 17b in the starting phase.
  • the conveyor belts 34a, 34b, the conveyor rollers 43, 44 and the collecting funnel 10 are jointly displaced locally in the direction of arrow 54 in the piecing phase (production operation), so that the conveyor rollers 43, 44 with their outlet opening 53 'and the collecting funnel 10 are arranged vertically above the pair of draw rollers 11 a, 11 b.
  • the fiber web (preliminary sliver) emerging from the outlet opening between the conveying rollers 43, 44 is guided vertically downward or centrally into the collecting funnel 10 both in the start phase (position 53) and in the piecing or production phase (position 53 ') .
  • position 53 start phase
  • piecing or production phase position 53 '

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Cable Accessories (AREA)
  • Replacement Of Web Rolls (AREA)

Description

Die Erfindung betrifft ein Verfahren zum automatischen Anspinnen eines Faserflors zu einem Faserband z. B. bei einer Karde, bei dem der von einer Walzeneinrichtung abgegebene Faserflor mindestens teilweise von einer Flortransporteinrichtung gesammelt und weitertransportiert, in der Startphase der unbrauchbare Faserflor einer Fördereinrichtung zugeführt und der aus der Fördereinrichtung austretende unbrauchbare Faserflor entfernt, in der Anspinnphase der brauchbare Faserflor von einem Trichter umfaßt und zu einem Faserband geformt und das aus dem Trichter austretende Faserband einem Abzugswalzenpaar zugeführt wird und umfaßt eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for automatically piecing a pile of fibers to a sliver z. B. in a card, in which the web of fibers released by a roller device is at least partially collected and transported by a web transport device, in the start-up phase the unusable web is fed to a conveyor and the useless web emerging from the conveyor is removed, in the piecing phase the usable web is removed by one Contains funnel and formed into a sliver and the sliver emerging from the funnel is fed to a pair of draw-off rollers and comprises an apparatus for performing the method.

In der Praxis wird zum Anspinnen der aus der Walzenvorrichtung, z. B. aus den Quetschwalzen abgegebene unbrauchbare Faserflor in einem ersten Schritt (Startphase) von Hand zusammengefaßt (gerafft), anschließend abgerissen und entfernt. In einem zweiten Schritt (Anspinnphase, Produktionsphase) wird der weiterhin aus der Walzenvorrichtung abgegebene brauchbare Faserflor ebenfalls von Hand zusammengefaßt, von Hand angespitzt und durch einen Trichter hindurch in den Walzenspalt eines Kalanderwalzenpaares gesteckt, das das Faserband erfaßt und zum Kannenstock weitertransportiert, der das Faserband in der Kanne ablegt.In practice, for piecing the from the roller device, for. B. from the squeeze rollers given useless fiber pile in a first step (start phase) by hand (gathered), then torn off and removed. In a second step (piecing phase, production phase), the usable fiber web that is still emitted from the roller device is also combined by hand, sharpened by hand and inserted through a funnel into the nip of a pair of calender rollers, which grips the fiber sliver and transports it to the can, which carries the sliver in the jug.

Bei einem bekannten Verfahren (EP-A 314 310) wird der Faserflor durch zwei Abnahmebänder gesammelt, zu einem Vorband verdichtet und durch zwei Übertragungswalzen (Förderwalzen) weitergeliefert. Zu diesem Zeitpunkt ist ein zweiteiliger Segmentrichter in einer geöffneten Position, so daß keine Berührung zu dem Vorband besteht. Weiterhin sind die Übertragungswalzen zu diesem Zeitpunkt mit einer ersten Geschwindigkeit angetrieben, die schneller als die Umfangsgeschwindigkeit der Abnahmebänder ist, wodurch eine Entfernung von Fasern vom Vorband eintritt. Dabei erfolgt ein Ansteigen der Umfangsgeschwindigkeit der Übertragungswalzen um 200 bis 300%. Dadurch wird ein übermäßiges Verziehen der Fasern zwischen den Transportwalzen der Abnahmebänder und den Übertragungswalzen erreicht, wodurch die unbrauchbaren Faserteile des Vorbandes in der Startphase abgetrennt und beseitigt werden. Von dem Vorband werden durch die Übertragungswalzen große Flocken oder Klumpen abgerissen. Die abgerissenen Faserteile fallen in ein Absaugrohr und werden als Abfall weggeführt. Das Abreißen der Faserteile von dem Vorband bildet ein allgemein zugespitztes Anfädelende des Vorbandes. Dieses zugespitzte Vorbandende wird nach unten in den V-förmigen Trichter eines Lufttrichters abgeliefert. Nachdem die Startphase (erster Schritt) beendet ist, wird die Geschwindigkeit der Übertragungswalzen auf eine zweite, normale Geschwindigkeit vermindert, so daß sie der Umfangsgeschwindigkeit der Abnahmebänder entspricht. Nach der Startphase wird der Anspinnvorgang (zweiter Schritt) mit dem Eintritt des angespitzten Vorbandes in den Lufttrichter fortgesetzt. Aus dem Lufttrichter tritt ein angespitztes Faserband aus, das in den Walzenspalt zwischen einer Nut- und Federwalze eintritt. Anschließend wird das Faserband in den Kannenstock abgeliefert. Nachdem die Karde ihre Produktionsgeschwindigkeit erreicht hat, werden in einem dritten Schritt die beiden Teile des Segmenttrichters geschlossen, um das Vorband zu umfassen, um eine Ausdehnung über die Oberfläche der Übertragungswalzen zu verhindern, d. h. der Segmenttrichter nimmt weder an der Bandbildung noch am Anspitzvorgang des Faserbandes teil. Nachteilig bei diesem Verfahren ist, daß das Vorbandende beim Abreißen der großen Flocken oder Klumpen vollständig abreißen kann, so daß der Fasermaterialfluß unterbrochen ist und das Wiedereinführen des nachlaufenden Vorbandes in die mit hoher Geschwindigkeit umlaufenden Übertragungswalzen nicht mehr einwandfrei gelingt. Es kann eine unerwünschte Ansammlung bzw. Verstopfung auftreten. Ein weiterer erheblicher Nachteil besteht darin, daß die Bandbildung im Lufttrichter pneumatisch erfolgen soll; das ist anlagemäßig sehr aufwendig und führt insbesondere bei ,Fehlströmungen der Luft zu betriebsmäßigen Störungen, so daß ein vollautomatisches Anspinnen mit dem bekannten Verfahren auf sichere Weise nicht möglich ist.In a known method (EP-A 314 310), the fiber web is collected by two take-off belts, to form a preliminary strip compressed and delivered by two transfer rollers (conveyor rollers). At this time, a two-part segment judge is in an open position so that there is no contact with the supporting strip. Furthermore, the transfer rollers are driven at this time at a first speed that is faster than the peripheral speed of the take-off belts, whereby fiber is removed from the sliver. The peripheral speed of the transfer rollers increases by 200 to 300%. This causes excessive warping of the fibers between the transport rollers of the take-off belts and the transfer rollers, as a result of which the unusable fiber parts of the sliver are separated and eliminated in the starting phase. Large flakes or lumps are torn off from the support by the transfer rollers. The torn fiber parts fall into a suction pipe and are carried away as waste. The tearing off of the fiber parts from the preliminary strip forms a generally tapered threading end of the preliminary strip. This tapered opening end is delivered down into the V-shaped funnel of an air funnel. After the start phase (first step) has ended, the speed of the transfer rollers is reduced to a second, normal speed so that it corresponds to the peripheral speed of the take-off belts. After the start phase, the piecing process (second step) continues with the entry of the pointed pre-strip into the air funnel. A pointed sliver emerges from the air funnel and enters the nip between a tongue and groove roller. The sliver is then delivered to the jug. After the card has reached its production speed, in a third step the two parts of the segment funnel are closed in order to enclose the pre-strip in order to prevent expansion over the surface of the transfer rollers, ie the segment funnel does not take part in the formation or tapering of the sliver part. A disadvantage of this method is that the end of the sliver can tear off completely when the large flakes or lumps are torn off, so that the flow of fiber material is interrupted and the re-introduction of the trailing pre-strip into the transfer rollers rotating at high speed is no longer successful. An undesirable build-up or constipation can occur. Another significant disadvantage is that the band formation in the air funnel should be done pneumatically; this is very complex in terms of system and leads, in particular, to incorrect air flows to operational disruptions, so that fully automatic piecing with the known method is not possible in a safe manner.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, ein Verfahren der eingangs beschriebenen Art zu schaffen, das die genannten Nachteile vermeidet, das insbesondere anlagemäßig einfacher ist und ein selbsttätiges Anspinnen auf sichere Art und störungsfreie Weise ermöglicht.In contrast, the invention is based on the object of creating a method of the type described at the outset which avoids the disadvantages mentioned, which in particular is simpler in terms of the system and enables automatic piecing in a safe manner and in a trouble-free manner.

Die Lösung dieser Aufgabe erfolgt durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.

Dadurch, daß in der Startphase der unbrauchbare Faserflor mit einheitlicher Geschwindigkeit gefördert wird, ist erfindungsgemäß dessen sichere Weiterbeförderung und Beseitigung ohne Unterbrechung möglich. Im Gegensatz zu dem bekannten Verfahren entfällt das aufwendige, drehzahlgesteuerte Anspitzen eines Vorbandes; ein solches Anspitzen ist wegen des durchlaufenden Fasermaterialflusses gar nicht möglich. Durch die weitere Maßnahme, nach der in der Anspinnphase (zweiter Schritt) durch Sammlung bzw. mechanisches Einengen des brauchbaren Faserflors das Faserband gebildet wird, wird auf vorteilhafte Weise zugleich das Anspitzen eingeleitet: Während in den Sammeltrichter der sich in Breitenrichtung erstreckende Faserflor eintritt, tritt aus dem Sammeltrichter ein enges, verdichtetes Faserband aus. Ein weiterer Vorteil ist dadurch gegeben, daß das Faserband, z. B. durch eine Klemmung ab- bzw. durchgetrennt wird, so daß auf diese Weise ein angespitztes Ende des Faserbandes entsteht, ohne daß es wie bei dem bekannten Verfahren aufwendiger pneumatischer Einrichtungen zur Bandbildung und zur Imitation der manuellen Anspitzung des Bandendes bedarf. Schließlich wird das aus dem Klemmtrichter austretende Ende des Faserbandes auf gezieltem und sicherem Weg in die Abzugswalzen eingeführt und von diesen erfaßt. Mit dem erfindungsgemäßen Verfahren ist in vorteilhafter Weise das selbsttätige Anspinnen auf sichere und störungsfreie Art ermöglicht.Characterized in that the unusable fibrous web is promoted at a uniform speed in the starting phase, its safe onward transport and disposal is possible according to the invention without interruption. In contrast to the known method, the complex, speed-controlled sharpening of a pre-strip is eliminated; such a sharpening is not possible at all because of the continuous flow of fiber material. The further measure, after which the sliver is formed in the piecing phase (second step) by collecting or mechanically concentrating the usable fiber pile, also advantageously starts the tapering: while the fiber pile extending in the width direction enters the collecting funnel a narrow, compressed fiber sliver from the collecting funnel. Another advantage is that the sliver, z. B. is separated or separated by a clamp, so that on this Way a tapered end of the sliver is formed without the need for complex pneumatic devices for band formation and for imitation of the manual tapering of the band end, as in the known method. Finally, the end of the sliver emerging from the clamping funnel is introduced in a targeted and safe way into the take-off rollers and is grasped by them. The method according to the invention advantageously enables automatic piecing in a safe and trouble-free manner.

Zweckmäßig wird der von der Fördereinrichtung abgegebene unbrauchbare Faserflor abgesaugt.The useless fiber web emitted by the conveying device is expediently suctioned off.

Die Erfindung umfaßt auch eine vorteilhafte Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens, bei der eine Walzeneinrichtung, z. B. Abnehmer, Abstreichwalze, Quetschwalzen o. dgl., vorgesehen ist, der eine Flortransporteinrichtung zum Sammeln und Weitertransport des Faserflors nachgeordnet ist, bei der im Anschluß an die Flortransporteinrichtung eine Fördereinrichtung vorgesehen ist und bei der unterhalb der Flortransporteinrichtung ein Trichter mit einem Abzugswalzenpaar angeordnet ist, die dadurch gekennzeichnet ist, daß die Flortransporteinrichtung in senkrechter oder schräger Richtung unterhalb der Walzeneinrichtung angeordnet ist, die Fördereinrichtung unterhalb der Flortransporteinrichtung angeordnet ist, der Trichter als Sammeltrichter ausgebildet und unterhalb der Flortransporteinrichtung und oberhalb der Fördereinrichtung und des Abzugswalzenpaares angeordnet ist und der Sammeltrichter, die Fördereinrichtung und/oder das Abzugswalzenpaar relativ zueinander ortsveränderlich sind. Durch die Anordnung der Flortransporteinrichtung, der Fördereinrichtung, des Sammeltrichters und der Abzugswalzen unterhalb der Walzeneinrichtung, z. B. der Quetschwalzen, fällt das Fasermaterial vorteilhaft nach unten, wodurch der Transport und der Fördervorgang nachhaltig unterstützt werden. Zugleich ist dadurch im Gegensatz zu der bekannten Vorrichtung konstruktiv eine wesentliche Vereinfachung erreicht.The invention also includes an advantageous device for performing the method according to the invention, in which a roller device, for. B. customer, doctor roller, squeeze rollers or the like, is provided, which is arranged downstream of a pile transport device for collecting and further transport of the pile, in which a conveyor is provided after the pile transport device and a funnel with a pair of draw rollers is arranged below the pile transport device which is characterized in that the pile transport device is arranged in a vertical or oblique direction below the roller device, the conveyor device is arranged below the pile transport device, the hopper is designed as a collecting funnel and is arranged below the pile transport device and above the conveyor device and the pair of draw-off rollers and the collecting hopper , The conveyor and / or the pair of draw rollers are movable relative to each other. By arranging the pile transport device, the conveyor, the collecting funnel and the take-off rollers below the roller device, for. B. the squeeze rollers, the fiber material advantageously falls down, whereby the transport and conveying process are sustainably supported. At the same time, in contrast to the known device, a significant simplification is achieved in terms of design.

Vorzugsweise weist die Flortransporteinrichtung mindestens ein Walzenpaar auf. Bevorzugt weist die Flortransporteinrichtung mindestens ein Florleitelement mit stationären Leitflächen auf. Mit Vorteil weist die Flortransporteinrichtung mindestens ein Förderband auf. Zweckmäßig ist die Flortransporteinrichtung senkrecht zur Walzenvorrichtung ortsveränderlich. Vorzugsweise ist die Fördereinrichtung ein Förderwalzenpaar. Bevorzugt ist die Fördereinrichtung eine Saugeinrichtung. Mit Vorteil ist die Fördereinrichtung ein Rutschblech o. dgl. Vorzugsweise ist dem Ausgang des Förderwalzenpaares eine Faserabführungseinrichtung, z. B. Absaugeinrichtung, zugeordnet. Bevorzugt umfaßt das Abzugswalzen eine Nut- und eine Federwalze. Zweckmäßig weist der Sammeltrichter mindestens eine bewegliche Wandfläche auf. Mit Vorteil weist der Sammeltrichter in der Seitenwand einen durchgehend offenen Längsschlitz auf, dem ein Verschlußelement zugeordnet ist. Zweckmäßig ist dem Sammeltrichter eine Klemmeinrichtung zum Durchtrennen des Faserbandes zugeordnet. Vorzugsweise ist der Sammeltrichter in senkrechter Richtung in bezug auf das Förderwalzenund das Abzugswalzenpaar ortsveränderlich. Bevorzugt ist der Sammeltrichter oberhalb des Förder- und des Abzugswalzenpaares in horizontaler Richtung hin- und herbewegbar. Mit Vorteil sind das Förder- und das Abzugswalzenpaar unterhalb des Sammeltrichters in horizontaler Richtung hin- und herbewegbar. Zweckmäßig sind das Förder- und das Abzugswalzenpaar koaxial zueinander angeordnet.The pile transport device preferably has at least one pair of rollers. The pile transport device preferably has at least one pile guide element with stationary guide surfaces. The pile transport device advantageously has at least one conveyor belt. The pile transport device is expediently movable in a direction perpendicular to the roller device. The conveyor device is preferably a pair of conveyor rollers. The conveyor device is preferably a suction device. The conveyor is advantageously a slide plate or the like. Preferably, a fiber removal device, e.g. B. suction device assigned. The take-off roll preferably comprises a tongue and groove roll. The collecting funnel expediently has at least one movable wall surface. The collecting funnel advantageously has a continuously open longitudinal slot in the side wall, to which a closure element is assigned. The collecting funnel is expediently assigned a clamping device for severing the sliver. Preferably the hopper is movable in a vertical direction with respect to the conveyor rollers and the pair of take-off rollers. The collecting funnel can preferably be moved back and forth in the horizontal direction above the pair of conveying and removal rollers. The pair of conveying and extraction rollers can advantageously be moved back and forth below the collecting hopper in the horizontal direction. The conveyor and the take-off roller pair are expediently arranged coaxially to one another.

Die Erfindung wird nachfolgend anhand von zeichnerisch dargestellten Ausführungsbeispielen näher erläutert.The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings.

Es zeigt:

Fig. 1
schematisch in Seitenansicht eine Karde mit der erfindungsgemäßen Vorrichtung,
Fig. 2a bis 2f
die Darstellung der Arbeitsweise an einer Ausführungsform der erfindungsgemäßen Vorrichtung,
Fig. 3a bis 3f
die Darstellung der Arbeitsweise mit Fasermaterialfluß,
Fig. 4a, 4b
eine Ausführungsform mit Saugeinrichtung als Fördereinrichtung,
Fig. 5a, 5b
die Ausbildung der Saugeinrichtung als Saugweiche,
Fig. 6
perspektivische Ansicht eines Sammeltrichters mit beweglichen Seitenwänden und
Fig. 7a, 7b
ein zweiteiliger Sammeltrichter im Schnitt mit Klemmeinrichtung.
It shows:
Fig. 1
schematically in side view a card with the device according to the invention,
2a to 2f
the representation of the operation of an embodiment of the device according to the invention,
3a to 3f
the representation of the mode of operation with fiber material flow,
4a, 4b
an embodiment with suction device as conveyor,
5a, 5b
the design of the suction device as a suction switch,
Fig. 6
perspective view of a collecting funnel with movable side walls and
7a, 7b
a two-part collecting funnel on average with clamping device.

Fig. 1 zeigt eine bekannte Karde, z. B. Trützschler EXACTACARD DK, mit Speisewalze 1, Speisetisch 2, Vorreißer 3, Trommel 4, Abnehmer 5, Abstreichwalze 6, Quetschwalzen 7, 8, Vliesleitelement 9, Bandtrichter 10, Abzugswalzen 11a, 11b, Bandführungsrohr 12, Kannenstock 13, Kanne 14 und Wanderdeckel 15. Die gebogenen Pfeile in den Walzen geben die Drehrichtung an. Das als Flockentransporteinrichtung zum Sammeln und Weitertransport des aus den Quetschwalzen 7, 8 austretenden Faserflors 19 dienende Vliesleitelement 9 ist nahezu senkrecht unterhalb der Quetschwalzen angeordnet, wobei dem Vliesleitelement 9 ein Walzenpaar 16a, 16b zugeordnet ist. Unterhalb des Vliesleitelements 9 ist als Fördereinrichtung ein Förderwalzenpaar (17a, 17b) (Fig. 2) angeordnet. Bei dieser Anordnung ist die erfindungsgemäße Vorrichtung einschließlich der Quetschwalzen 7, 8 oberhalb der Kanne 14 angeordnet.Fig. 1 shows a known card, e.g. B. Trützschler EXACTACARD DK, with feed roller 1, dining table 2, licker-in 3, drum 4, customer 5, doctor roller 6, squeeze rollers 7, 8, fleece guide element 9, belt funnel 10, take-off rollers 11a, 11b, belt guide tube 12, can 13, can 14 and Revolving cover 15. The curved arrows in the rollers indicate the direction of rotation. The fleece guide element 9 serving as a flock transport device for collecting and further transporting the fiber web 19 emerging from the squeeze rolls 7, 8 is arranged almost vertically below the squeeze rolls, with a pair of rolls 16a, 16b being assigned to the fleece guide element 9. A pair of conveyor rollers (17a, 17b) (FIG. 2) is arranged below the fleece guide element 9 as the conveying device. In this arrangement, the device according to the invention, including the squeeze rollers 7, 8, is arranged above the can 14.

Nach Fig. 2a bis 2f sind das zweiteilige Vliesleitelement 9a, 9b mit unbeweglichen Leitflächen und die Walzen 16a, 16b senkrecht unterhalb der Quetschwalzen 7, 8 angeordnet. Senkrecht unterhalb des Vliesleitelementes 9a, 9b und der Walzen 16a, 16b sind das Förderwalzenpaar 17a, 17b und das Abzugswallenpaar 11a, 11b horizontal koaxial zueinander angeordnet. Am Ausgang der Förderwalzen 17a, 17b ist ein (mit einer nicht dargestellten Saugquelle verbundenes) Absaugrohr 18 angeschlossen. Zwischen dem Vliesleitelement 9 und den Förderwalzen 17a, 17b und den Abzugswalzen 11a, 11b ist der Sammeltrichter 10 angeordnet, der in horizontaler Richtung lageveränderbar ist.According to FIGS. 2a to 2f, the two-part fleece guide element 9a, 9b with immovable guide surfaces and the rolls 16a, 16b are arranged vertically below the squeeze rolls 7, 8. The pair of conveyor rollers are vertical below the fleece guide element 9a, 9b and the rollers 16a, 16b 17a, 17b and the pair of discharge ramps 11a, 11b are arranged horizontally coaxially with one another. A suction pipe 18 (connected to a suction source, not shown) is connected to the outlet of the conveyor rollers 17a, 17b. Between the fleece guide element 9 and the conveyor rollers 17a, 17b and the take-off rollers 11a, 11b, the collecting funnel 10 is arranged, which can be changed in position in the horizontal direction.

Nachfolgend wird die Arbeitsweise der Vorrichtung im Betrieb erläutert. In der Startphase (Anlaufphase) der Karde werden nur bruchstückhafte, nicht zusammenhängende Florstücke erzeugt, die nicht zur Erzeugung eines durchgehenden Faserbandes geeignet sind. Die Florstücke werden gemäß Fig. 2a von der Vliesleiteinrichtung 9, deren Leitflächen 9a, 9b ein nach unten offenes Dreieck bilden, gesammelt, von den am offenen Ausgang des Dreiecks befindlichen beiden Walzen 16a, 16b erfaßt und dem Förderwalzenpaar 17a, 17b zugeführt. Die von den Förderwalzen 17a, 17b abgegebenen Florstücke gelangen in das Absaugrohr 18 und werden von dort aus beseitigt. Sobald die Anlaufphase der Karde vorüber ist, z. B. nach 10 bis 15 Sekunden schwenken gem. Fig. 2b die Leitflächen 9a, 9b und die Walzen 16a, 16b nach oben in Richtung auf die Quetschwalzen 7, 8 hinzu (siehe Pfeile A bis D in Fig. 2a). In einem nächsten Schritt fahren gemäß Fig. 2c die beiden Hälften 10a, 10b des Sammeltrichters 10 zusammen und umfassen des Faserflors 19, wobei durch Einengung im Sammeltrichter 10 der Faserflor 19 in ein Faserband 20 überführt wird (vgl. Fig. 7b). Anschließend wird gemäß Fig. 2d der Sammeltrichter 10 nach oben hin (Pfeil U) angehoben und das Faserband 20 am Ende des Sammeltrichters 20 durch Klemmung (siehe Fig. 7b) durchgetrennt. Während die Förderwalzen 17a, 17b weiterlaufen, so daß das Faserband 20 abreißt. In einem nächsten Schritt wird der Sammeltrichter 10 gemäß Fig. 2e in horizontaler Richtung (Pfeil V) über das Abzugswalzenpaar 11a, 11b bewegt, die Klemmeinrichtung gelöst und anschließend das Ende des Sammeltrichters 10 gem. Fig. 2f senkrecht nach unten (Pfeil W) in den Walzenspalt der Abzugswalzen 11a, 11b eingeführt.The operation of the device in operation is explained below. In the start phase (start-up phase) of the card, only fragmentary, non-contiguous pile pieces are produced which are not suitable for producing a continuous sliver. The pile pieces are collected according to FIG. 2a by the fleece guide device 9, the guide surfaces 9a, 9b of which form a triangle which is open at the bottom, are gripped by the two rollers 16a, 16b located at the open exit of the triangle and are fed to the pair of conveyor rollers 17a, 17b. The pile pieces released by the conveyor rollers 17a, 17b enter the suction pipe 18 and are removed from there. As soon as the start-up phase of the card is over, e.g. B. swivel after 10 to 15 seconds. Fig. 2b the guide surfaces 9a, 9b and the rollers 16a, 16b upwards in the direction of the squeeze rollers 7, 8 (see arrows A to D in Fig. 2a). In a next step, the two halves 10a, 10b of the collecting funnel 10 move together according to FIG. 2c and comprise the fiber pile 19, the fiber pile 19 being converted into a fiber band 20 by constriction in the collecting funnel 10 (cf. FIG. 7b). 2d, the collecting funnel 10 is then lifted upwards (arrow U) and the sliver 20 is cut at the end of the collecting funnel 20 by clamping (see FIG. 7b). While the conveyor rollers 17a, 17b continue to run, so that the sliver 20 breaks. In a next step, the collecting funnel 10 according to FIG. 2e is moved in the horizontal direction (arrow V) over the pair of draw-off rollers 11a, 11b, the clamping device is released and then the end of the collecting funnel 10 according to FIG. Fig. 2f inserted vertically downwards (arrow W) into the nip of the take-off rollers 11a, 11b.

Die Abzugswalzen 11a, 11b erfassen das aus dem Ausgang des Sammeltrichters 10 überstehende Ende des Faserbandes 10 und ziehen das Faserband 20 kontinuierlich aus dem Sammeltrichter 10 ab. Schließlich wird das Faserband 20 über den Kannenstock 13 durch das Ablagerungsrohr 12 in die Kanne 14 eingeführt.The take-off rollers 11a, 11b grasp the end of the sliver 10 protruding from the outlet of the collecting hopper 10 and continuously pull the sliver 20 out of the collecting hopper 10. Finally, the sliver 20 is introduced into the can 14 via the can 13 through the deposit tube 12.

In den Fig. 3a bis 3f ist durch Pfeile der Fasermaterialfluß dargestellt. Die Walzen 16a, 16b sind ortsfest und ständig unmittelbar angrenzend an die Quetschwalzen 7, 8 angeordnet. Nach Abschluß der Startphase (Fig. 3a) schwenken die Leitflächen 9a, 9b - abweichend zur Darstellung nach Fig. 2a - in der durch die gebogenen Pfeile E und H gezeigten Richtung in die in Fig. 3b dargestellte geschlossene Position angrenzend an die Quetschwalzen 7, 8. Die Pfeile F und G zeigen die Richtung an, in der die Leitelemente 9a, 9b aus der geschlossenen in die offene Position geschwenkt werden. Die Leitflächen 9a, 9b sind an ihrem äußeren Ende nach oben gebogen. Die Arbeitsweise der Fig. 3b bis 3f entspricht der nach den Fig. 2b bis 2f.3a to 3f, the flow of fiber material is shown by arrows. The rollers 16a, 16b are stationary and always arranged immediately adjacent to the squeeze rollers 7, 8. After completion of the start phase (Fig. 3a), the guide surfaces 9a, 9b - in contrast to the representation according to Fig. 2a - pivot in the direction shown by the curved arrows E and H in the closed position shown in Fig. 3b adjacent to the squeeze rollers 7, 8. The arrows F and G indicate the direction in which the guide elements 9a, 9b are pivoted from the closed to the open position. The guide surfaces 9a, 9b are bent upwards at their outer end. 3b to 3f corresponds to that according to FIGS. 2b to 2f.

Mit a, b, c, d und e ist der Fluß des unbrauchbaren Faserflors 19 bezeichnet, der in der Startphase vorhanden ist. Mit a', b', c' und d' ist der Materialfluß des brauchbaren Faserflors 19 bezeichnet, der in der (nach der Startphase befindlichen) Anspinnphase vorhanden ist. Mit f ist die Richtung des Faserflusses des Faserbandes 20 bezeichnet.With a, b, c, d and e is the flow of unusable fiber web 19, which is present in the starting phase. With a ', b', c 'and d' the material flow of the usable fiber web 19 is designated, which is present in the piecing phase (after the start phase). With f the direction of the fiber flow of the sliver 20 is designated.

Nach Fig.4a ist unterhalb der Quetschwalzen 7, 8 ein Leitelement aus zwei unten offenen Leitflächen 21a, 21b vorhanden, die zur Seite hin eine Abschirmung bilden, unterhalb derer eine Auffangrinne 22 vorhanden ist, an die ein Absaugrohr 23 für den unbrauchbaren Faserflor e angeschlossen ist. Fig. 4a zeigt die Absaugeinrichtung 22, 23 in der Startphase. Nach Abschluß der Startphase wird die Absaugeinrichtung 22, 23 (auf nicht dargestellte Weise) unterhalb der Quetschwalzen bzw. der Leitflächen 21a, 21b entfernt, der unten offene Längsschlitz 21c zwischen den Leitflächen 21a, 21b wird von zwei Seiten her durch zwei Abdeckbänder 24a, 24b bis auf eine Öffnung 25 in der Mitte verschlossen. Der aus der Öffnung 25 austretende brauchbare Faserflor 19 wird von den zusammenfahrenden Walzen 16a, 16b nach unten hin weitertransportiert, durch die beiden Hälften des Sammeltrichters 10a, 10b von der Seite her erfaßt und - nach Zusammenfahren der Hälften 10a, 10b - zu einem Faserband 20 geformt.According to Fig.4a, below the squeeze rollers 7, 8 there is a guide element consisting of two guide surfaces 21a, 21b which are open at the bottom and which form a shield to the side, below which a collecting channel 22 is provided, to which a suction pipe 23 for the unusable fiber web is connected is. 4a shows the suction device 22, 23 in the starting phase. After completion of the starting phase, the suction device 22, 23 (in a manner not shown) below the squeeze rollers or the guide surfaces 21a, 21b is removed, the longitudinal slot 21c open below between the guide surfaces 21a, 21b is closed from two sides by two masking tapes 24a, 24b except for an opening 25 in the middle. The usable fiber web 19 emerging from the opening 25 is transported further downwards by the moving rollers 16a, 16b, gripped from the side by the two halves of the collecting funnel 10a, 10b and - after moving the halves 10a, 10b together - to form a fiber band 20 shaped.

Nach Fig. 5a, 5b ist das Absaugrohr 23 als Saugweiche mit zwei Ausgängen 23a, 23b ausgebildet, wobei der Ausgang 23b durch ein Verschlußelement, z. B. einen Schieber 26, von dem Ausgang 23a abgetrennt ist, solange unbrauchbarer Faserflor fließt und zugeschaltet wird, sobald brauchbarer Faserflor gefördert wird.According to Fig. 5a, 5b, the suction pipe 23 is designed as a suction switch with two outputs 23a, 23b, the output 23b by a closure element, for. B. a slide 26 is separated from the output 23a, as long as unusable fiber web flows and is switched on as soon as usable fiber web is conveyed.

Nach Fig. 6 weist der Sammeltrichter 10 vier schräg einander gegenüberliegende Seitenflächen 10c bis 10f auf. Die Seitenflächen 10c und 10d bilden einen unten offenen Längsschlitz 10g. Die Seitenflächen 10c und 10d sind in Richtung der Pfeile 1, K bzw. L, M verschiebbar, wodurch die Weite des Schlitzes 10g einstellbar ist. Die Seitenflächen 10e und 10f sind in Richtung der Pfeile O, P bzw. Q, R verschiebbar, wodurch die Größe der Eingangsöffnung und der Ausgangsöffnung 10h des Sammeltrichters 10 veränderbar ist. Die Bewegung der Seitenflächen 10c, 10f entspricht der in Fig. 2b, 2c bzw. 3b, 3c dargestellten Bewegung der Hälften 10a, 10b des Sammeltrichters 10.6, the collecting funnel 10 has four obliquely opposite side surfaces 10c to 10f. The side surfaces 10c and 10d form a longitudinal slot 10g which is open at the bottom. The side surfaces 10c and 10d can be displaced in the direction of the arrows 1, K and L, M, as a result of which the width of the slot 10g can be adjusted. The side surfaces 10e and 10f can be displaced in the direction of the arrows O, P and Q, R, as a result of which the size of the inlet opening and the outlet opening 10h of the collecting funnel 10 can be changed. The movement of the side surfaces 10c, 10f corresponds to the movement of the halves 10a, 10b of the collecting funnel 10 shown in FIGS. 2b, 2c and 3b, 3c.

Nach Fig. 7a ist der Hälfte 10a des Sammeltrichters 10 ein Klemmelement 27a zugeordnet, das ein Ende eines auf einem Drehlager 28 gelagerten Doppelhebels 27 bildet. Am anderen Ende 27b des Doppelhebels 27 greift ein pneumatischer Zylinder 29 an. Der Doppelhebel 27 ist in Richtung der Pfeile S, T drehbar. In Fig. 7b ist dargestellt, wie das Faserband 20 durch das Klemmelement 27a gegen eine gegenüberliegende Innenwand am Ausgang des Sammeltrichters 10 gepreßt wird (entsprechend dem Arbeitsschritt in den Fig. 2d, 3d). Dadurch, daß die Förderwalzen 17a, 17b weiterlaufen, reißt das Faserband 20 ab.7a, half 10a of the collecting funnel 10 is assigned a clamping element 27a which forms one end of a double lever 27 mounted on a rotary bearing 28. At the other end 27b of the double lever 27, a pneumatic cylinder 29 engages. The double lever 27 can be rotated in the direction of the arrows S, T. FIG. 7b shows how the sliver 20 is pressed by the clamping element 27a against an opposite inner wall at the outlet of the collecting funnel 10 (corresponding to the working step in FIGS. 2d, 3d). Because the conveyor rollers 17a, 17b continue to run, the sliver 20 tears off.

Fig. 8 zeigt ein Halteelement 30, in Gestalt eines Hebelarms, an dessen einem Ende der Sammeltrichter 10 befestigt ist und dessen anderes Ende an einem Drehlager 31 gelagert ist. Durch Drehung in Richtung der Pfeile X, Y wird der Sammeltrichter 10 nach oben oder unten bewegt (siehe Fig. 3c, 3d). Das Drehlager 31 ist über ein Lagerelement 32 auf einer horizontalen Richtung der Pfeile V, Z verschiebbaren Kulisse 33 befestigt, wodurch der Sammeltrichter 10 in horizontaler Richtung ortsveränderlich ist (siehe Fig. 2e, 3e).8 shows a holding element 30, in the form of a lever arm, at one end of which the collecting funnel 10 is fastened and the other end of which is mounted on a rotary bearing 31. By rotating in the direction of arrows X, Y, the collecting funnel 10 is moved up or down (see FIGS. 3c, 3d). The pivot bearing 31 is fastened by means of a bearing element 32 in a horizontal direction 33 which is displaceable by the arrows V, Z, as a result of which the collecting funnel 10 can be moved in the horizontal direction (see FIGS. 2e, 3e).

Nach Fig. 9a, 9b sind unterhalb der Quetschwalzen 7, 8 (Drehung in Richtung der Pfeile 7a, 8a) als Flortransporteinrichtung zwei Förderbänder 34a, 34b vorhanden, deren horizontale Flächen in Richtung der Pfeile 35, 36, 37, 38 beweglich sind. Die Umlenkrollen 39, 40 laufen in Richtung der Pfeile 41 bzw. 42 um. Zwischen den Quetschwalzen 7, 8 und den Förderbändern 34a, 34b sind nach unten weisende Luftabschirmelemente 21a, 21b vorhanden. Die Förderbänder 34a, 34b sind sowohl in der Anspinn- als auch in der Betriebsphase ortsfest.According to FIGS. 9a, 9b, two conveyor belts 34a, 34b are provided below the squeeze rollers 7, 8 (rotation in the direction of the arrows 7a, 8a), the horizontal surfaces of which are movable in the direction of the arrows 35, 36, 37, 38. The deflection rollers 39, 40 run in the direction of the arrows 41 and 42, respectively. Air shielding elements 21a, 21b pointing downward are present between the squeeze rollers 7, 8 and the conveyor belts 34a, 34b. The conveyor belts 34a, 34b are stationary both in the piecing phase and in the operating phase.

Nach Fig. 10a bis 10b sind zwischen den einander zugewandten Umlenkrollen 39, 40 der Förderbänder 34a, 34b achsparallel zwei Walzen 43, 44 vorhanden, die sich in Richtung der Pfeile 45 bzw. 46 drehen. In der Anspinnphase (Startphase) gemäß fig. 10a, 10b sind die Förderbänder 34a, 34b und die Walze 43, 44 horizontal in einer Ebene angeordnet. Der Faserflor 47 tritt mit langsamer Geschwindigkeit aus dem Spalt zwischen den Walzen 7, 8 aus, trifft von oben auf die oberen Flächen der Förderbänder 34a, 34b auf, wird in Richtung der horizontalen Pfeile 35 bzw. 37 gefördert und tritt durch den Spalt zwischen den Walzen 43, 44 nach unten hin aus. In der anschließenden Betriebsphase gem. Fig. 10c, 10d hat der schnell-laufende Faserflor 47 etwa eine Dreiecksform, wobei der Faserflor 47 aus den Quetschwalzen 7, 8 direkt in den Spalt zwischen den Walzen 43, 44 gelangt, ohne die Förderbänder 34a, 34b zu berühren. Die Förderbänder 34a, 34b sind entsprechend einer zweckmäßigen Ausbildung aus der in Fig. 10a, 10b dargestellten Position senkrecht nach unten verlagert. Vorzugsweise sind die Flächen der Förderbänder 34a, 34b in Richtung der Pfeile 35' bis 38' beweglich, d. h. die Bewegungsrichtung ist im Vergleich zu Fig. 10a umgekehrt nach außen gerichtet, wobei aus dem Faserflor 47 nach unten fallende Verunreinigungen, z. B. Trash, Blatt- und Stengelreste u. dgl. nach außen von den Förderbändern 34a, 34b wegtransportiert werden.According to FIGS. 10a to 10b, two rollers 43, 44, which rotate in the direction of arrows 45 and 46, are present between the mutually facing deflection rollers 39, 40 of the conveyor belts 34a, 34b. In the piecing phase (start phase) according to fig. 10a, 10b, the conveyor belts 34a, 34b and the roller 43, 44 are arranged horizontally in one plane. The fibrous web 47 emerges from the gap between the rollers 7, 8 at a slow speed, strikes the upper surfaces of the conveyor belts 34a, 34b from above, is conveyed in the direction of the horizontal arrows 35 and 37, and passes through the gap between the Rolls 43, 44 downwards. In the subsequent operating phase according to 10c, 10d, the fast-running fibrous web 47 has approximately a triangular shape, the fibrous web 47 coming from the squeezing rollers 7, 8 directly into the gap between the rollers 43, 44 without touching the conveyor belts 34a, 34b. The conveyor belts 34a, 34b are shifted vertically downward from the position shown in FIGS. 10a, 10b in accordance with an appropriate design. The surfaces of the conveyor belts 34a, 34b are preferably movable in the direction of the arrows 35 'to 38', ie Direction of movement is reversed in comparison to FIG. 10a, with impurities falling down from the fiber web 47, e.g. B. trash, leaf and stem remains u. Like. Can be transported away from the conveyor belts 34a, 34b.

Fig. 11 zeigt eine Ausführungsform, bei der in der Anspinnphase (Fig. 11a) die Walzen 43', 44' auseinander gefahren sind. In der Betriebsphase (Fig. 11b) sind die Walzen 43, 44 in Richtung der Pfeile 48, 49 (durch eine nicht dargestellte Vorrichtung) zusammengefahren.FIG. 11 shows an embodiment in which the rollers 43 ', 44' have moved apart in the piecing phase (FIG. 11a). In the operating phase (FIG. 11b) the rollers 43, 44 are moved together in the direction of the arrows 48, 49 (by a device, not shown).

Nach Fig. 12 ist der Sammeltrichter 10 ortsfest oberhalb der Förderwalzen 17 und der Ahzugswalzen 11 angeordnet. In der Startphase sind die beweglichen Schiebeelemente 10e, 10f entsprechend der Darstellung in Fig. 12a nach links derart verschoben, daß das unbrauchbare Fasermaterial in die Förderwalzen 17 gelangt. In der Betriebsphase sind die Schiebeelemente 10e, 10f entsprechend der Darstellung in Fig. 12b nach rechts derart verschoben, daß das Gutmaterial (Faserband) in die Abzugswalzen 11a, 11b gelangt. Zur Verlagerung der Bandaustrittsöffnung 10h vergleiche Fig. 6.According to FIG. 12, the collecting funnel 10 is arranged in a stationary manner above the conveyor rollers 17 and the feed rollers 11. In the starting phase, the movable sliding elements 10e, 10f are shifted to the left, as shown in FIG. 12a, in such a way that the unusable fiber material gets into the conveyor rollers 17. In the operating phase, the sliding elements 10e, 10f are shifted to the right, as shown in FIG. 12b, in such a way that the good material (fiber sliver) gets into the take-off rollers 11a, 11b. For the displacement of the tape exit opening 10h, see FIG. 6.

Nach Fig. 13 sind zwei Förderbänder 50, 51 vorgesehen, die um Umlenkrollen 39', 39'', 39‴ bzw. 40', 40'', 40‴ umlaufen. Die Umlenkrollen 39‴, 40‴ in der Anspinnphase (Fig. 13a) werden in der Betriebsphase (Fig. 13b) derart in horizontaler Richtung verlagert, daß sie senkrecht unterhalb der Umlenkrollen 39', 40' angeordnet sind, so daß der Zwischenraum 52 zwischen den Förderbändern 50,51 aus einem Schrägverlauf in einen senkrechten Verlauf übergeht.According to FIG. 13, two conveyor belts 50, 51 are provided, which run around deflection rollers 39 ', 39' ', 39 ‴ or 40', 40 '', 40 ‴. The deflection rollers 39 ‴, 40 ‴ in the piecing phase (Fig. 13a) are shifted in the operating phase (Fig. 13b) in such a way that they are arranged vertically below the deflection rollers 39 ', 40', so that the space 52 between the conveyor belts 50, 51 change from an oblique course to a vertical course.

Die Erfindung umfaßt sowohl eine Ausbildung, bei der das aus dem sammeltrichter 10 austretende Bandende durch örtliche Verlagerung des gesamten Sammeltrichters 10 als auch durch örtliche Verlagerung von Wandflächen innerhalb des ortsfesten Sammeltrichters in den Walzenspalt der Abzugswalzen 11 eingeführt wird.The invention comprises both an embodiment in which the end of the strip emerging from the collecting hopper 10 is introduced into the roller gap of the take-off rollers 11 by local displacement of the entire collecting hopper 10 and by local displacement of wall surfaces within the stationary collecting hopper.

Nach Fig. 14a sind in der Startphase die Förderwalzen 43, 44 mit ihrer Austrittsöffnung 53 und der Sammeltrichter 10 senkrecht oberhalb des Förderwalzenpaares 17a, 17b angeordnet. Nach Fig. 14b sind in der Anspinnphase (Produktionsbetrieb) die Förderbänder 34a, 34b, die Förderwalzen 43, 44 und der Sammeltrichter 10 in Richtung des Pfeils 54 gemeinsam örtlich verschoben, so daß die Förderwalzen 43, 44 mit ihrer Austrittsöffnung 53' und der Sammeltrichter 10 senkrecht oberhalb des Abzugswalzenpaares 11 a, 11b angeordnet sind. Dadurch wird der aus der Austrittsöffnung zwischen den Förderwalzen 43, 44 austretende Faserflor (Vorband) sowohl in der Startphase (Position 53) als auch in der Anspinn- bzw. Produktionsphase (Position 53') senkrecht nach unten bzw. mittig in den Sammeltrichter 10 geführt. Dadurch werden infolge geringerer Umlenkung Fehlverzüge oder Bandbrüche vermieden.14a, the conveyor rollers 43, 44 with their outlet opening 53 and the collecting funnel 10 are arranged vertically above the pair of conveyor rollers 17a, 17b in the starting phase. According to FIG. 14b, the conveyor belts 34a, 34b, the conveyor rollers 43, 44 and the collecting funnel 10 are jointly displaced locally in the direction of arrow 54 in the piecing phase (production operation), so that the conveyor rollers 43, 44 with their outlet opening 53 'and the collecting funnel 10 are arranged vertically above the pair of draw rollers 11 a, 11 b. As a result, the fiber web (preliminary sliver) emerging from the outlet opening between the conveying rollers 43, 44 is guided vertically downward or centrally into the collecting funnel 10 both in the start phase (position 53) and in the piecing or production phase (position 53 ') . As a result, incorrect warping or belt breaks are avoided as a result of less deflection.

Claims (31)

  1. A process for the automatic formation of a sliver from a fibre web, for example in a carding machine, in which the fibre web discharged by a roller device
    a) is at least partly collected and transported further by a web transport device (9, 9a, 9b, 16a, 16b, 21a, 21b),
    b) in the starting phase the unusable fibre web is supplied to a conveyor device and
    c) the unusable fibre web emerging from the conveyor device (17a, 17b, 22, 23) is removed,
    d) in the formation phase the usable fibre web is surrounded by a funnel (10, 10a, 10b, 10c to 10f) and formed into a sliver and
    e) the sliver emerging from the funnel (10, 10a, 10b, 10c to 10f) is supplied to a pair of delivery rollers (11a, 11b),
    characterised in that
    f) in the starting phase the fibre web is transported at a uniform speed,
    g) in the formation phase the fibre web is converted into a sliver by being confined in a collecting funnel (10, 10a, 10b, 10c to 10f),
    h) the sliver is severed above the conveyor device (17a, 17b, 22, 23) and
    i) the sliver end emerging from the collecting funnel (10, 10a, 10b, 10c to 10f) is introduced into the nip of the delivery rollers by displacement of the outlet opening (10h) of the collecting funnel and/or of the delivery rollers.
  2. A process according to claim 1, characterised in that the unusable fibre web discharged by the conveyor device is removed by suction.
  3. An apparatus for the automatic formation of a sliver from a fibre web, for example in a carding machine for carrying out the process according to claim 1 or 2, in which there is provided a roller device, for example doffer, stripper roller, squeezing rollers or the like, downstream of which there is arranged a web transport device (9, 9a, 9b, 16a, 16b, 21a, 21b) for the collection and further transportation of the fibre web, in which after the web transport device there is provided a conveyor device (17a, 17b, 22, 23) and in which below the web transport device there is arranged a funnel (10, 10a, 10b, 10c to 10f) having a pair of delivery rollers, characterised in that the web transport device (9; 9a, 9b; 16a, 16b; 21a, 21) is arranged vertically or obliquely below the roller device (6; 7,8), the conveyor device (17a, 17b; 22, 23) is arranged below the web transport device (9; 9a, 9b; 16a, 16b; 21a, 21b), the funnel is constructed in the form of a collecting funnel (10; 10a, 10b; 10c to 10f) and is arranged below the web transport device (9; 9a, 9b; 16a, 16b; 21a, 21b) and above the conveyor device (17a, 17b; 22, 23) and the pair of delivery rollers (11a, 11b), the collecting funnel (10) is associated with a separating device, for example a clamping device, (27a, 27', 27'') for severing the sliver (20), and the outlet opening (10h) of the collecting funnel (10; 10a, 10b; 22, 23) and/or the pair of delivery rollers (11a, 11b) are displaceable relative to one another.
  4. Apparatus according to any one of claims 1 to 3, characterised in that the web transport device has at least one pair of rollers (16a, 16b).
  5. Apparatus according to any one of claims 1 to 4, characterised in that the web transport device has at least one web guide member (9) having stationary guide surfaces (9a, 9b).
  6. Apparatus according to any one of claims 1 to 5, characterised in that the web transport device has at least one conveyor belt (34a, 34b; 50, 51).
  7. Apparatus according to any one of claims 1 to 6, characterised in that the web transport device (9; 9a, 9b) can be displaced vertically relative to the roller device (6; 7,8).
  8. Apparatus according to any one of claims 1 to 7, characterised in that the conveyor device is a pair of conveyor rollers (17a, 17b).
  9. Apparatus according to any one of claims 1 to 8, characterised in that the conveyor device is a suction device (22, 23).
  10. Apparatus according to any one of claims 1 to 9, characterised in that the conveyor device is a slide sheet (21a, 21b) or the like.
  11. Apparatus according to any one of claims 1 to 10, characterised in that the outlet of the pair of conveyor rollers (17a, 17b) is associated with a fibre removal device, for example a suction device (18).
  12. Apparatus according to any one of claims 1 to 11, characterised in that the pair of delivery rollers (11a, 1bb) comprises a groove and a tongue roller.
  13. Apparatus according to any one of claims 1 to 12, characterised in that the collecting funnel (10) has at least one movable side wall (10a, 10b; 10c to 10f).
  14. Apparatus according to any one of claims 1 to 13, characterised in that the collecting funnel (10) has in its side wall a continuously open longitudinal slot which is associated with a closure member.
  15. Apparatus according to any one of claims 1 to 14, characterised in that the collecting funnel (20) is displaceable in a vertical direction (U; X, Y) relative to the pair of conveyor rollers (17a, 17b) and the pair of delivery rollers (11a, 11b).
  16. Apparatus according to any one of claims 1 to 15, characterised in that the collecting funnel (10) can be moved back and forth in a horizontal direction (V, Z) above the pair of conveyor rollers (17a, 17b) and the pair of delivery rollers (11a, 11b).
  17. Apparatus according to any one of claims 1 to 16, characterised in that the pair of conveyor rollers (17a, 17b) and the pair of delivery rollers (11a, 11b) can be moved back and forth in a horizontal direction below the collecting funnel (10).
  18. Apparatus according to any one of claims 1 to 17, characterised in that the pair of conveyor rollers (17a, 17b) and the pair of delivery rollers (11a, 11b) are arranged coaxially with one another.
  19. Apparatus according to any one of claims 1 to 18, characterised in that the pair of delivery rollers (11a, 11b) is used as a pair of pressing rollers for the coiler.
  20. Apparatus according to any one of claims 1 to 19, characterised in that the collecting funnel (10) is used as a sliver funnel for the coiler.
  21. Apparatus according to any one of claims 1 to 20, characterised in that the collecting funnel (10) has a device for detecting variations in sliver thickness, for example movable measuring tongs.
  22. Apparatus according to any one of claims 1 to 21, characterised in that the web transport device (9), the conveyor device (17a, 17b), the pair of delivery rollers (11a, 11b) and the collecting funnel (10) are arranged above the coiler (13) and the can (14).
  23. Apparatus according to any one of claims 1 to 22, characterised in that between the opposing guide rollers (39, 40) of the conveyor belts (34a, 34b) there are arranged, axially parallel, two conveyor rollers (43, 44).
  24. Apparatus according to any one of claims 1 to 23, characterised in that the direction of rotation (41, 42) of the guide rollers (39, 39a; 40, 40a) of the conveyor belts (34a, 34b) is reversible.
  25. Apparatus according to any one of claims 1 to 24, characterised in that the conveyor belts (34a, 34b) can be displaced in a vertical direction.
  26. Apparatus according to any one of claims 1 to 25, characterised in that the collecting funnel (10; 10a, 10b; 10e to 10f) is displaceable.
  27. Apparatus according to any one of claims 1 to 26, characterised in that the collecting funnel (10) has two slide members (10e, 10f) by means of which the outlet opening (10h) for the fibre material can be displaced (O, P, Q, R).
  28. Apparatus especially according to any one of claims 1 to 27, characterised in that the outlet opening (25; 52; 53, 53') of the web transport device (9; 24a, 24b; 34a, 34b; 43, 44; 50, 51) for the fibre web is displaceable in a horizontal direction (54, 55).
  29. Apparatus according to any one of claims 1 to 28, characterised in that the conveyor belts (34a, 34b) can be displaced in a horizontal direction (54, 55).
  30. Apparatus according to any one of claims 1 to 29, characterised in that the conveyor rollers (43, 44) can be displaced together in a horizontal direction (54, 55).
  31. Apparatus according to any one of claims 1 to 30, characterised in that the conveyor rollers (43, 44; 43', 44') can be displaced individually in a horizontal direction (48, 49).
EP90110858A 1989-08-07 1990-06-08 Method and arrangement for automatically piecing Expired - Lifetime EP0412256B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3926071 1989-08-07
DE3926071 1989-08-07
DE4017064 1990-05-26
DE4017064A DE4017064A1 (en) 1989-08-07 1990-05-26 Card web and sliver splicing

Publications (2)

Publication Number Publication Date
EP0412256A1 EP0412256A1 (en) 1991-02-13
EP0412256B1 true EP0412256B1 (en) 1993-05-26

Family

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EP90110858A Expired - Lifetime EP0412256B1 (en) 1989-08-07 1990-06-08 Method and arrangement for automatically piecing

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US (1) US5095587A (en)
EP (1) EP0412256B1 (en)
JP (1) JP2846934B2 (en)
BE (1) BE1003524A4 (en)
BR (1) BR9003850A (en)
CA (1) CA2022951C (en)
CH (1) CH682922A5 (en)
DE (2) DE4017064A1 (en)
ES (1) ES2025474A6 (en)
FR (1) FR2650603B1 (en)
GB (1) GB2235472B (en)
IT (1) IT1243699B (en)
RU (1) RU2062310C1 (en)

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DE3913548C2 (en) * 1989-04-25 2000-08-31 Truetzschler Gmbh & Co Kg Device for measuring the sliver thickness and the unevenness of a sliver on spinning preparation machines
DE4017064A1 (en) * 1989-08-07 1991-02-14 Truetzschler & Co Card web and sliver splicing
JPH0630048A (en) * 1992-07-09 1994-02-04 Nippon Telegr & Teleph Corp <Ntt> Multimedia information supply system

Also Published As

Publication number Publication date
CA2022951A1 (en) 1991-02-08
JP2846934B2 (en) 1999-01-13
EP0412256A1 (en) 1991-02-13
DE59001543D1 (en) 1993-07-01
BR9003850A (en) 1991-09-03
IT9021232A1 (en) 1992-02-07
GB2235472B (en) 1993-06-16
IT1243699B (en) 1994-06-21
GB9017199D0 (en) 1990-09-19
BE1003524A4 (en) 1992-04-14
DE4017064A1 (en) 1991-02-14
FR2650603A1 (en) 1991-02-08
US5095587A (en) 1992-03-17
IT9021232A0 (en) 1990-08-07
ES2025474A6 (en) 1992-03-16
GB2235472A (en) 1991-03-06
JPH0369619A (en) 1991-03-26
CH682922A5 (en) 1993-12-15
CA2022951C (en) 1994-10-18
FR2650603B1 (en) 1993-08-06
RU2062310C1 (en) 1996-06-20

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