EP3081679B1 - Winding machine for creating a rolled lap and method for winding a lap - Google Patents

Winding machine for creating a rolled lap and method for winding a lap Download PDF

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Publication number
EP3081679B1
EP3081679B1 EP16000361.2A EP16000361A EP3081679B1 EP 3081679 B1 EP3081679 B1 EP 3081679B1 EP 16000361 A EP16000361 A EP 16000361A EP 3081679 B1 EP3081679 B1 EP 3081679B1
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EP
European Patent Office
Prior art keywords
winding
lap
elastic
roll
ring
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EP16000361.2A
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German (de)
French (fr)
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EP3081679A1 (en
Inventor
Armin Leder
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Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G27/00—Lap- or sliver-winding devices, e.g. for products of cotton scutchers, jute cards, or worsted gill boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
    • 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

Definitions

  • the invention relates to a winding machine that doubles and stretches several slivers together to form a wadding, the wadding formed being wound on a winding tube by means of two winding rollers or at least one winding roller and a band to form wadding rolls for presentation to a comber.
  • the invention further relates to a method for winding a cotton wool.
  • Flat combing machines which are commonly used today, are fed by wadding rolls, which were previously produced in winding machines from individual strips.
  • the winding machine receives the template in the form of, for example, 24 or 36 tapes from at least one stretch, the template being temporarily stored in round or rectangular cans.
  • the tapes are doubled together in the winding machine and stretched slightly to form the cotton wool.
  • This is wound up in a winding unit with at least two winding rollers by means of a sleeve to form a cotton roll, the cotton roll being pressed against the winding rollers with a high force of up to 15,000 N during the winding process.
  • This high force is necessary in order to compress the cotton wool to such an extent that a 300 m winding length can be wound into a cotton wool roll with a diameter of approximately 550 mm. It is disadvantageous that this high force pulls the resulting cotton roll into the gusset between the rigid winding rollers and permanently deforms it.
  • the compressive force on the cotton roll and the deformation cause the cotton roll to heat up to 40 ° - 60 ° C and thereby sticky substances in the cotton lead to a sticking of the fiber layers, which leads to increased hairiness when unrolled.
  • a further development of the classic winding process using winding rollers is tape winding technology, in which a winding tape is used instead of the two winding rollers.
  • the wrapping tape encloses the wadding on its outer circumference at an angle of 155 ° to 270 °, depending on the embodiment.
  • the tensile force acting on the winding tape acts as a winding force which is distributed over the circumference of the loop.
  • the deformation of the cotton wrap is reduced to a minimum by the winding tape, since the winding tape absorbs possible deformations.
  • This has the disadvantage that the winding tapes have to be replaced after a few months in operation, which is very expensive.
  • the guidance and the constant tension of the winding tape are extremely complex in terms of construction, which cannot be compensated for by the higher winding speed.
  • a mixture of the two processes provides for the wadding to be produced by means of one or two winding rollers, in which an additional rotating band guides the wrap.
  • the EP 0945080 A2 describes a winding machine in which the cotton roll is generated by a circulating belt.
  • the winding machine has several sensors and measuring devices, with which the winding diameter is determined indirectly in order to lower the winding pressure with increasing winding diameter.
  • the DE 102006020586 A1 describes a method for winding cotton rolls, in which the respective wound cotton length is determined by means of a speed control device for driving the winding rollers, and is assigned to a decreasing winding pressure. With increasing winding diameter, the winding pressure gradually decreases.
  • the DE 1927132 describes a winding machine for coreless winding of, for example, cellulose wadding.
  • the rollers are made of rubber.
  • the DE 20212869 U1 describes winding rollers for winding paper, in which the winding roller has an elastic surface in segments. Gaps are arranged between the segments, which can be used as an escape space due to the deformable elastic segments.
  • the DE 4418549 A1 discloses a roller with a cavity which is filled with an incompressible medium and can deform the outer jacket by applying pressure.
  • the resultant crowning of the outer contour of the roller is undesirable and unsuitable for the production of cotton rolls.
  • the object is achieved by a winding machine which doubles and stretches several slivers together to form a batting, the batting formed on a winding tube by means of two winding rollers or at least one winding roller and a band is wound into cotton rolls for presentation to a comber.
  • the invention is characterized in that the at least one winding roller has an elastic jacket or outer circumference.
  • the majority of the deformation work during the formation of a roll can thus be taken up by the winding roll or rolls.
  • the resulting cotton wrap is less deformed as a result, which reduces the temperature level in the cotton wrap.
  • the bonding of the fiber layers is reduced, which reduces the hairiness.
  • the subsequent combing process can thus be carried out in a higher quality.
  • the at least one winding roller comprises a rigid, inelastic core or carrier on which an elastic ring is arranged over the entire working width.
  • the previous design principle of the winding machine can thus be retained.
  • a conventional winding roller is replaced, it can be replaced by the winding roller according to the invention with the same external dimensions.
  • the ring can consist of a solid plastic which has the necessary elasticity and preferably has a wear-resistant and tight surface.
  • the ring can have a thickness or wall thickness of 20 to 100 mm. In this way, the basic construction of the winding roller can be maintained at least in part.
  • the ring can have a thickness or wall thickness of up to 200 mm, in which case the core of the winding roller can be produced as a round carrier, for example from a drawn or pressed sheet metal part.
  • the ring made of plastic advantageously has a Shore A hardness of 30 to 95. This results in a compromise between an elastic surface and minimal dimensional stability, as a result of which the wadding roll continues to be wound with a sufficient minimum hardness so that the winding diameter does not become too large.
  • the elastic ring has at least one integrated reinforcement that extends over the working width. This can ensure that the elastic deformation takes place almost over the entire working width of the winding roller at the same time.
  • the elastic ring has a circumferential hollow chamber which is filled with a medium.
  • this makes it easier to transport and assemble the elastic ring, and on the other hand, the hardness of the elastic ring can be adjusted via the media pressure.
  • gaseous or liquid media are considered as media, the hardness of the elastic ring being adjustable via the filling pressure.
  • the medium can be a liquid, the viscosity of which can be adjusted electrorheologically.
  • a thin elastic steel jacket can preferably be covered over the elastic ring.
  • the steel jacket can preferably be produced from spring steel.
  • the metallic surface of the elastic steel jacket prevents fibers from sticking to the surface.
  • the method according to the invention for winding a wadding, in which a plurality of fiber slivers are doubled and stretched together, and the resulting wadding is wound onto a winding tube by means of at least one winding roller is characterized in that the hardness of the sheath and / or during the winding process .
  • the outer circumference of the at least one winding roller is adjustable.
  • the winding process can be adapted to the fiber quality via the hardness of the jacket or the outer circumference. In the case of fibers with a high proportion of sticky substances, the winding rollers can be adjusted more flexibly than in the case of fibers which do not have these sticky substances.
  • the hardness of the at least one winding roller increases as the winding process increases.
  • the pressure of the medium located in the elastic ring can be increased, or alternatively the viscosity of the liquid medium is increased.
  • the cotton roll can thus be wound with greater hardness at the end of the winding process in order not to let the total diameter of the cotton roll increase, for example, over 600 mm, which would be unfavorable for handling on the comber.
  • a winding machine 1 is shown, as is used, for example, in combing preparation in the textile industry according to the prior art.
  • Several slivers 3, which may consist of natural or synthetic fibers, are fed to the winding machine 1 via cans and drawn in a drafting device, not shown.
  • the slivers 3 are further passed via an inlet area 2 in the material flow direction 7 to a plurality of pressure rollers 4a-4c, which guide the slivers 3 into the feed area between two winding rollers 5a, 5b and a winding tube 6 for the production of a cotton lap.
  • a pre-compressor 8 can be arranged in or on the inlet area 2, which makes the sliver 3 more uniform.
  • the wadding can also be produced between one or two winding rollers and a rotating belt.
  • the winding tube 6 is clamped on its end faces via two side plates (not shown) and by means of force elements, such as, for example a hydraulic or pneumatic cylinder, not shown, drawn along a guide 9 against the winding rollers 5a, 5b.
  • force elements such as, for example a hydraulic or pneumatic cylinder, not shown, drawn along a guide 9 against the winding rollers 5a, 5b.
  • the winding tube 6 lies in the gusset 10 of the winding rollers 5a, 5b.
  • the cotton roll 15 deforms (broken line), which is at least partially pulled into the gusset 10 due to the winding force. Due to the permanent deformation by the rotating winding rollers 5a, 5b and the rotating cotton roll 15, the cotton roll heats up, as a result of which sticky substances in the cotton lead to an increased adhesion of the fiber layers and thus to a greater hairiness.
  • winding rollers 5a, 5b are preferably designed to be at least partially elastic.
  • elasticity is considered to be a resilience of the surface on the jacket or the outer circumference, in which a cotton roll of at least 300 mm in diameter with a contact pressure of 15,000 N against the winding rolls 5a, 5b a deformation of the winding rolls 5a, 5b of at least 1 mm depth.
  • the winding rollers 5a, 5b continue to consist of a rigid, round body or core 11a, 11b, but onto which a ring 12a, 12b made of an elastic material is fitted.
  • the body or core 11a, 11b can consist of a construction made of steel or a light metal.
  • the ring can have a thickness of 20 - 100 mm and a hardness of 30 - 95 Shore A.
  • the ring 12a, 12b can consist of an abrasion-resistant plastic with a dense surface on which the fibers of the Don't stick cotton wool. Plastics from the groups of thermoplastics, elastomers and thermosets can be used as materials, preferably from the group of elastomers.
  • the rings 12a, 12b can have an integrated reinforcement over the winding width, so that the elastic compliance occurs not only at certain points, but always over the entire working width of the winding rollers 5a, 5b. Local thick spots on the cotton roll 15 can thus be avoided.
  • a further embodiment of the invention provides for a jacket 13a, 13b to be made of a thin spring steel via the elastic ring 12a, 12b.
  • the jacket 13a, 13b can have a thickness of 0.3 to 3 mm and preferably consist of a corrosion-resistant metal.
  • An alternative embodiment provides for the ring 12a, 12b to be designed as a gas-filled tire, which may have an internal reinforcement by means of a steel belt.
  • This embodiment has the advantage that the hardness or elasticity of the winding roller 5a, 5b can be adjusted via the gas pressure, which enables adaptation to different fiber qualities. Especially with fiber qualities that have only little or no sticky substances, the winding rollers 5a, 5b can be set harder in order to run at a higher speed if necessary, since the temperature increase within the wadding roll 15 resulting from the flexing work has only a minor effect on the quality or Has hairiness. Furthermore, it is possible to change the hardness of the winding rollers 5a, 5b over the duration of the winding process by means of a device for changing the gas pressure.
  • the cotton roll 15 can be wound with a lower hardness at the beginning, and can be wound harder at the end of the winding process, for example not by the winding diameter at the specified winding length of 300 m to rise above 600 mm, which would be unfavorable for handling on the comber.
  • the hardness of the winding rollers 5a, 5b can also be adjusted by means of a liquid filled in the tire, the viscosity of which can be changed, for example, electrorheologically.
  • the embodiment with the liquid has the advantage that higher pressures can be generated with more compact components.
  • a hydraulic system is less dangerous in the event of possible leaks and a safer method in terms of fire and explosion protection. Both variants can be actively controlled by means of sensor-actuator systems and the hardness or elasticity of the winding rollers 5a, 5b can be adjusted via the winding process.
  • Both embodiments can also be combined with a jacket 13a, 13b made of spring steel, whereby the fiber adhesion is reduced.
  • the gas or liquid-filled ring can be produced from a plastic or rubber material, or can be produced in combination with a liquid filling from a metallic material.
  • the ring 12a, 12b made of solid rubber with a greater thickness or wall thickness, which can be up to 200 mm.
  • the ring 12a, 12b is mounted on a carrier 14a, 14b which, like a rim, can consist of a pressed or drawn sheet metal part.
  • This ring 12a, 12b can also have a hardness of 30-95 Shore A and additionally a reinforcement integrated over the winding width.
  • the surface or lateral surface of the rings 12a, 12b can have a closed surface by means of chemical or thermal treatment, to which no fibers adhere if possible. Even after this Embodiment, an additional jacket with a jacket 13a, 13b made of spring steel, for example, is possible.
  • FIG 4 a section through a winding roller 5a is shown, in which a ring 12a made of a soft plastic, such as natural rubber, was drawn on a carrier 14a made of steel, for example.
  • the ring 12a made of natural rubber can have a hardness of 30 Shore A, for example.
  • the ring 12a is flexible and elastic on the outer circumference during winding, the material of the ring 12a has to be pushed laterally into the end faces due to the local diameter reduction. This leads to a contour as intensified in Figure 4 is shown.
  • material can accumulate, which in the form of a tip can enlarge the diameter of the winding roller 5a and thus damage the cotton roll 15 at its edges.
  • At least the end faces of the ring 12a are concave, that is to say thinner towards the axis of rotation of the winding roller 5a than on the outer circumference, in order to give the material of the elastic ring 12a space for targeted deformation.
  • the width of the winding roller 5a thus increases towards the outer circumference such that when the ring 12a is deformed locally, there is always a flat surface over the cross section or the surface of the winding roller 5a, so that the cotton roll is wound over its width with a constant, flat contact surface becomes.
  • the classic winding concept can be retained, whereby the susceptibility to maintenance and the complexity of the system are kept within reasonable limits in comparison to a tape winder.
  • Another advantage is that existing winding machines can be retrofitted if their winding rollers 5a, 5b have to be replaced due to incorrect operation or wear.

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

Description

Die Erfindung betrifft eine Wickelmaschine, die mehrere Faserbänder miteinander zu einer Watte doubliert und verstreckt, wobei die gebildete Watte auf einer Wickelhülse mittels zweier Wickelwalzen oder mindestens einer Wickelwalze und einem Band zu Wattewickel zur Vorlage an eine Kämmmaschine aufgewickelt wird.The invention relates to a winding machine that doubles and stretches several slivers together to form a wadding, the wadding formed being wound on a winding tube by means of two winding rollers or at least one winding roller and a band to form wadding rolls for presentation to a comber.

Weiterhin betrifft die Erfindung ein Verfahren zum Wickeln einer Watte.The invention further relates to a method for winding a cotton wool.

Die heute übliche Speisung von Flachkämmmaschinen erfolgt durch Wattewickel, die zuvor in Wickelmaschinen aus einzelnen Bändern erzeugt wurden. Dazu erhält die Wickelmaschine die Vorlage in Form von beispielsweise 24 oder 36 Bändern von mindestens einer Strecke, wobei die Vorlage in runden oder rechteckigen Kannen zwischengespeichert wird. Die Bänder werden in der Wickelmaschine miteinander doubliert und leicht verstreckt und damit die Watte gebildet. Diese wird in einer Wickeleinheit mit mindestens zwei Wickelwalzen mittels einer Hülse zu einem Wattewickel aufgewickelt, wobei der Wattewickel während des Wickelvorganges mit einer hohen Kraft von bis zu 15.000 N gegen die Wickelwalzen gedrückt wird. Diese hohe Kraft ist notwendig, um die Watte soweit zu verdichten, dass 300 m Wickellänge zu einem Wattewickel mit etwa 550 mm Durchmesser aufgewickelt werden können. Nachteilig ist, dass durch diese hohe Kraft der entstehende Wattewickel in den Zwickel zwischen die starren Wickelwalzen gezogen wird und sich dabei permanent verformt. Die Druckkraft auf den Wattewickel und die Verformung bewirken, dass sich der Wattewickel auf 40° - 60° C erwärmt und dadurch klebebehaftete Substanzen in der Baumwolle zu einem Verkleben der Faserlagen führen, was bei einem Abrollen zu einer verstärkten Haarigkeit führt. Eine Reduzierung der Wickelkraft kann in Abhängigkeit der verwendeten Fasern dazu führen, dass während des Wickelvorganges Luft mitgeschleppt wird, wodurch zwischen den Faserlagen Luftblasen entstehen, die zu Verwerfungen führen und den Wickel für den weiteren Kämmprozess unbrauchbar machen. Das kann im Wesentlichen nur durch eine geringere Wickelgeschwindigkeit kompensiert werden, wodurch die Produktivität der Kämmerei sinkt.Flat combing machines, which are commonly used today, are fed by wadding rolls, which were previously produced in winding machines from individual strips. For this purpose, the winding machine receives the template in the form of, for example, 24 or 36 tapes from at least one stretch, the template being temporarily stored in round or rectangular cans. The tapes are doubled together in the winding machine and stretched slightly to form the cotton wool. This is wound up in a winding unit with at least two winding rollers by means of a sleeve to form a cotton roll, the cotton roll being pressed against the winding rollers with a high force of up to 15,000 N during the winding process. This high force is necessary in order to compress the cotton wool to such an extent that a 300 m winding length can be wound into a cotton wool roll with a diameter of approximately 550 mm. It is disadvantageous that this high force pulls the resulting cotton roll into the gusset between the rigid winding rollers and permanently deforms it. The compressive force on the cotton roll and the deformation cause the cotton roll to heat up to 40 ° - 60 ° C and thereby sticky substances in the cotton lead to a sticking of the fiber layers, which leads to increased hairiness when unrolled. Depending on the fibers used, a reduction in the winding force can result in air being carried along during the winding process, as a result of which air bubbles form between the fiber layers, which lead to warping and make the winding unusable for the further combing process. This can essentially only be compensated for by a lower winding speed, which reduces the productivity of the combing.

Eine Weiterentwicklung des klassischen Wickelprozesses mittels Wickelwalzen stellt die Bandwickeltechnologie dar, bei der statt der beiden Wickelwalzen ein Wickelband verwendet wird. Das Wickelband umschließt den Wattewickel auf seinem Außenumfang je nach Ausführungsform in einem Winkel von 155° bis 270°. Die auf das Wickelband einwirkende Zugkraft wirkt als Wickelkraft, die sich auf den Umfang der Umschlingung verteilt. Durch das Wickelband wird die Deformation der Wattewickel auf ein Minimum reduziert, da das Wickelband mögliche Deformationen aufnimmt. Damit ist der Nachteil verbunden, dass die Wickelbänder schon nach wenigen Monaten im Betrieb ausgetauscht werden müssen, was sehr teuer ist. Des Weiteren ist die Führung und das konstante Spannung halten des Wickelbandes konstruktiv äußerst aufwendig, was durch die höhere Wickelgeschwindigkeit nicht kompensiert werden kann.A further development of the classic winding process using winding rollers is tape winding technology, in which a winding tape is used instead of the two winding rollers. The wrapping tape encloses the wadding on its outer circumference at an angle of 155 ° to 270 °, depending on the embodiment. The tensile force acting on the winding tape acts as a winding force which is distributed over the circumference of the loop. The deformation of the cotton wrap is reduced to a minimum by the winding tape, since the winding tape absorbs possible deformations. This has the disadvantage that the winding tapes have to be replaced after a few months in operation, which is very expensive. Furthermore, the guidance and the constant tension of the winding tape are extremely complex in terms of construction, which cannot be compensated for by the higher winding speed.

Eine Mischung aus beiden Verfahren sieht vor, den Wattewickel mittels einem oder zwei Wickelwalzen herzustellen, bei dem zusätzlich ein umlaufendes Band den Wickel führt.A mixture of the two processes provides for the wadding to be produced by means of one or two winding rollers, in which an additional rotating band guides the wrap.

In der EP 0945080 A2 wird eine Wickelmaschine beschrieben, in der der Wattewickel durch ein umlaufendes Band erzeugt wird. Die Wickelmaschine weist mehrere Sensoren und Messeinrichtungen auf, mit denen indirekt der Wickeldurchmesser bestimmt wird, um den Wickeldruck mit steigendem Wickeldurchmesser zu senken.In the EP 0945080 A2 describes a winding machine in which the cotton roll is generated by a circulating belt. The winding machine has several sensors and measuring devices, with which the winding diameter is determined indirectly in order to lower the winding pressure with increasing winding diameter.

Die DE 102006020586 A1 beschreibt ein Verfahren zum Wickeln von Wattewickeln, bei der mittels einer Drehzahl-Steuervorrichtung für den Antrieb der Wickelwalzen die jeweils gewickelte Wattenlänge ermittelt wird, und einem abnehmenden Wickeldruck zugeordnet wird. Mit zunehmendem Wickeldurchmesser nimmt der Wickeldruck stufenweise ab.The DE 102006020586 A1 describes a method for winding cotton rolls, in which the respective wound cotton length is determined by means of a speed control device for driving the winding rollers, and is assigned to a decreasing winding pressure. With increasing winding diameter, the winding pressure gradually decreases.

In der DE 1927132 wird eine Wickelmaschine zum kernlosen Aufwickeln von beispielsweise Zellstoffwatte beschrieben. Nach dem dort beschriebenen Stand der Technik bestehen die Walzen aus Gummi.In the DE 1927132 describes a winding machine for coreless winding of, for example, cellulose wadding. According to the prior art described there, the rollers are made of rubber.

Die DE 20212869 U1 beschreibt Wickelwalzen zum Wickeln von Papier, bei dem die Wickelwalze segmentweise eine elastische Oberfläche aufweist. Zwischen den Segmenten sind Lücken angeordnet, die durch die verformbaren elastischen Segmente als Ausweichraum genutzt werden können.The DE 20212869 U1 describes winding rollers for winding paper, in which the winding roller has an elastic surface in segments. Gaps are arranged between the segments, which can be used as an escape space due to the deformable elastic segments.

Die DE 4418549 A1 offenbart eine Walze mit einem Hohlraum, der mit einem inkompressiblen Medium gefüllt ist und mittels Druckbeaufschlagung den Außenmantel verformen kann. Die hiermit bewirkte Bombierung der Außenkontur der Walze ist unerwünscht und für die Herstellung von Wattewickel ungeeignet.The DE 4418549 A1 discloses a roller with a cavity which is filled with an incompressible medium and can deform the outer jacket by applying pressure. The resultant crowning of the outer contour of the roller is undesirable and unsuitable for the production of cotton rolls.

Es ist Aufgabe der Erfindung eine Wickelmaschine zu schaffen, mit der ein qualitativ hochwertiger Wickel preiswert erzeugt werden kann. Weiterhin ist es Aufgabe der Erfindung, ein zugehöriges Verfahren zum Wickeln von Faserbändern zu schaffen.It is an object of the invention to provide a winding machine with which a high-quality winding can be produced inexpensively. Furthermore, it is an object of the invention to provide an associated method for winding fiber slivers.

Die Erfindung löst die gestellte Aufgabe durch die Lehre nach Anspruch 1, 5 und 8; weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind durch die Unteransprüche gekennzeichnet.The invention solves this problem by the teaching of claim 1, 5 and 8; Further advantageous design features of the invention are characterized by the subclaims.

Die Aufgabe wird durch eine Wickelmaschine gelöst, die mehrere Faserbänder miteinander zu einer Watte doubliert und verstreckt, wobei die gebildete Watte auf einer Wickelhülse mittels zweier Wickelwalzen oder mindestens einer Wickelwalze und einem Band zu Wattewickel zur Vorlage an eine Kämmmaschine aufgewickelt wird.The object is achieved by a winding machine which doubles and stretches several slivers together to form a batting, the batting formed on a winding tube by means of two winding rollers or at least one winding roller and a band is wound into cotton rolls for presentation to a comber.

Die Erfindung ist dadurch gekennzeichnet, dass die mindestens eine Wickelwalze einen elastischen Mantel bzw. Außenumfang aufweist. Damit kann der Großteil der Verformungsarbeit bei der Bildung eines Wickels von der oder den Wickelwalzen aufgenommen werden. Der entstehende Wattewickel wird dadurch weniger stark verformt, wodurch das Temperaturniveau im Wattewickel sinkt. Bei Fasern, die wie beispielsweise Baumwolle klebrige Substanzen enthalten, vermindert sich die Verklebung der Faserlagen, wodurch die Haarigkeit sinkt. Damit kann das nachfolgende Kämmverfahren in einer höheren Qualität durchgeführt werden.The invention is characterized in that the at least one winding roller has an elastic jacket or outer circumference. The majority of the deformation work during the formation of a roll can thus be taken up by the winding roll or rolls. The resulting cotton wrap is less deformed as a result, which reduces the temperature level in the cotton wrap. In the case of fibers which contain sticky substances such as, for example, cotton, the bonding of the fiber layers is reduced, which reduces the hairiness. The subsequent combing process can thus be carried out in a higher quality.

Dabei umfasst die mindestens eine Wickelwalze einen starren, unelastischen Kern oder Träger, auf den über die gesamte Arbeitsbreite ein elastischer Ring angeordnet ist. Damit kann das bisherige Konstruktionsprinzip der Wickelmaschine beibehalten werden. Bei einem Austausch einer konventionellen Wickelwalze kann diese durch die erfindungsgemäße Wickelwalze mit gleichen Außenabmessungen ersetzt werden.The at least one winding roller comprises a rigid, inelastic core or carrier on which an elastic ring is arranged over the entire working width. The previous design principle of the winding machine can thus be retained. When a conventional winding roller is replaced, it can be replaced by the winding roller according to the invention with the same external dimensions.

In einer ersten und dritten Ausführungsform kann der Ring aus einem massiven Kunststoff bestehen, der die notwendige Elastizität aufweist und vorzugsweise eine verschleißfeste und dichte Oberfläche aufweist.In a first and third embodiment, the ring can consist of a solid plastic which has the necessary elasticity and preferably has a wear-resistant and tight surface.

Nach der ersten Ausführungsform kann der Ring eine Dicke bzw. Wandstärke von 20 bis 100 mm aufweisen. Damit kann zumindest teilweise die Grundkonstruktion der Wickelwalze beibehalten werden. In einer dritten Ausführungsform kann der Ring eine Dicke bzw. Wandstärke von bis zu 200 mm aufweisen, wobei dann der Kern der Wickelwalze als runder Träger, beispielsweise aus einem gezogenen oder gepressten Blechteil, herstellbar ist.According to the first embodiment, the ring can have a thickness or wall thickness of 20 to 100 mm. In this way, the basic construction of the winding roller can be maintained at least in part. In a third embodiment, the ring can have a thickness or wall thickness of up to 200 mm, in which case the core of the winding roller can be produced as a round carrier, for example from a drawn or pressed sheet metal part.

Vorteilhafterweise weist der Ring aus Kunststoff eine Härte nach Shore A von 30 bis 95 auf. Damit ergibt sich ein Kompromiss zwischen einer elastischen Oberfläche und einer minimalen Formstabilität, wodurch der Wattewickel weiterhin mit einer ausreichenden Mindesthärte gewickelt wird, damit der Wickeldurchmesser nicht zu groß wird.The ring made of plastic advantageously has a Shore A hardness of 30 to 95. This results in a compromise between an elastic surface and minimal dimensional stability, as a result of which the wadding roll continues to be wound with a sufficient minimum hardness so that the winding diameter does not become too large.

Der elastische Ring weist mindestens eine über die Arbeitsbreite erstreckende integrierte Verstärkung auf. Damit kann sichergestellt werden, dass die elastische Verformung nahezu über die gesamte Arbeitsbreite der Wickelwalze gleichzeitig erfolgt.The elastic ring has at least one integrated reinforcement that extends over the working width. This can ensure that the elastic deformation takes place almost over the entire working width of the winding roller at the same time.

In einer zweiten Ausführungsform weist der elastische Ring eine umlaufende hohle Kammer auf, die mit einem Medium gefüllt ist. Damit kann einerseits der Transport und die Montage des elastischen Ringes erleichtet werden, andererseits kann die Härte des elastischen Ringes über den Mediendruck einstellbar sein. Als Medien kommen dabei insbesondere gasförmige oder flüssige Medien in Betracht, wobei über den Fülldruck die Härte des elastischen Ringes einstellbar ist.In a second embodiment, the elastic ring has a circumferential hollow chamber which is filled with a medium. On the one hand, this makes it easier to transport and assemble the elastic ring, and on the other hand, the hardness of the elastic ring can be adjusted via the media pressure. In particular, gaseous or liquid media are considered as media, the hardness of the elastic ring being adjustable via the filling pressure.

Alternativ kann das Medium eine Flüssigkeit sein, deren Viskosität elektrorheologisch einstellbar ist.Alternatively, the medium can be a liquid, the viscosity of which can be adjusted electrorheologically.

Bevorzugt kann bei allen Ausführungsformen über den elastischen Ring ein dünner elastischer Stahlmantel übergezogen werden. Der Stahlmantel kann vorzugsweise aus einem Federstahl herstellbar sein. Die metallische Oberfläche des elastischen Stahlmantels verhindert ein verstärktes Anhaften von Fasern an der Oberfläche.In all embodiments, a thin elastic steel jacket can preferably be covered over the elastic ring. The steel jacket can preferably be produced from spring steel. The metallic surface of the elastic steel jacket prevents fibers from sticking to the surface.

Das erfindungsgemäße Verfahren zum Wickeln einer Watte, bei dem mehrere Faserbänder miteinander doubliert und verstreckt werden, und die dadurch entstehende Watte mittels mindestens einer Wickelwalze auf eine Wickelhülse gewickelt wird, ist dadurch gekennzeichnet, dass vor und/oder während des Wickelvorganges die Härte des Mantels bzw. des Außenumfanges der mindestens einen Wickelwalze einstellbar ist. Über die Härte des Mantels bzw. des Außenumfanges kann der Wickelvorgang an die Faserqualität angepasst werden. Bei Fasern mit einem hohen Anteil an klebrigen Substanzen können die Wickelwalzen elastischer eingestellt werden, als bei Fasern, die diese klebrigen Substanzen nicht aufweisen.The method according to the invention for winding a wadding, in which a plurality of fiber slivers are doubled and stretched together, and the resulting wadding is wound onto a winding tube by means of at least one winding roller, is characterized in that the hardness of the sheath and / or during the winding process . of The outer circumference of the at least one winding roller is adjustable. The winding process can be adapted to the fiber quality via the hardness of the jacket or the outer circumference. In the case of fibers with a high proportion of sticky substances, the winding rollers can be adjusted more flexibly than in the case of fibers which do not have these sticky substances.

Vorteilhafterweise wird mit zunehmendem Wickelvorgang die Härte der mindestens einen Wickelwalze höher. Dabei kann der Druck des Mediums, das sich im elastischen Ring befindet, erhöht werden, oder alternativ die Viskosität des flüssigen Mediums wird erhöht. Der Wattewickel kann damit zum Ende des Wickelvorganges mit einer größeren Härte gewickelt werden, um den Gesamtdurchmesser des Wattewickels beispielsweise nicht über 600 mm ansteigen zu lassen, was für das Handling an der Kämmmaschine ungünstig wäre.Advantageously, the hardness of the at least one winding roller increases as the winding process increases. The pressure of the medium located in the elastic ring can be increased, or alternatively the viscosity of the liquid medium is increased. The cotton roll can thus be wound with greater hardness at the end of the winding process in order not to let the total diameter of the cotton roll increase, for example, over 600 mm, which would be unfavorable for handling on the comber.

Die Erfindung wird anhand der beiliegenden Zeichnungen näher erläutert. Sie zeigen in:

Figur 1:
eine schematische Darstellung einer Wickelmaschine nach dem Stand der Technik;
Figur 2:
eine Darstellung einer erfindungsgemäßen Wickelmaschine nach einer ersten Ausführungsform;
Figur 3:
eine weitere Ausführungsform einer erfindungsgemäßen Wickelmaschine;
Figur 4:
einen Schnitt durch das Profil einer Wickelwalze;
Figur 5:
einen Schnitt durch das Profil einer modifizierten Wickelwalze.
The invention is explained in more detail with reference to the accompanying drawings. They show in:
Figure 1:
a schematic representation of a winding machine according to the prior art;
Figure 2:
an illustration of a winding machine according to the invention according to a first embodiment;
Figure 3:
a further embodiment of a winding machine according to the invention;
Figure 4:
a section through the profile of a winding roller;
Figure 5:
a section through the profile of a modified winding roller.

In Figur 1 ist eine Wickelmaschine 1 dargestellt, wie sie beispielsweise in der Kämmereivorbereitung in der Textilindustrie nach dem Stand der Technik verwendet wird. Mehrere Faserbänder 3, die aus natürlichen oder synthetischen Fasern bestehen können, werden über Kannen der Wickelmaschine 1 zugeführt und in einem nicht dargestellten Streckwerk verstreckt. Die Faserbänder 3 werden weiter über einen Einlaufbereich 2 in Materialflussrichtung 7 zu mehreren Druckwalzen 4a - 4c geleitet, die die Faserbänder 3 in den Einzugsbereich zwischen zwei Wickelwalzen 5a, 5b und einer Wickelhülse 6 zur Herstellung eines Wattewickels leiten. Im oder am Einlaufbereich 2 kann ein Vorverdichter 8 angeordnet sein, der das Faserband 3 vergleichmäßigt. Alternativ kann der Wattewickel auch zwischen einem oder zwei Wickelwalzen und einem umlaufenden Band hergestellt werden.In Figure 1 a winding machine 1 is shown, as is used, for example, in combing preparation in the textile industry according to the prior art. Several slivers 3, which may consist of natural or synthetic fibers, are fed to the winding machine 1 via cans and drawn in a drafting device, not shown. The slivers 3 are further passed via an inlet area 2 in the material flow direction 7 to a plurality of pressure rollers 4a-4c, which guide the slivers 3 into the feed area between two winding rollers 5a, 5b and a winding tube 6 for the production of a cotton lap. A pre-compressor 8 can be arranged in or on the inlet area 2, which makes the sliver 3 more uniform. Alternatively, the wadding can also be produced between one or two winding rollers and a rotating belt.

Die Wickelhülse 6 wird über zwei nicht dargestellte Seitenteller an ihren Stirnseiten geklemmt und mittels Kraftelementen, wie beispielsweise einem nicht dargestellten hydraulischen oder pneumatischen Zylinder, entlang einer Führung 9 gegen die Wickelwalzen 5a, 5b gezogen. Mit Beginn des Wickelvorganges liegt die Wickelhülse 6 im Zwickel 10 der Wickelwalzen 5a, 5b an. Mit zunehmendem Durchmesser des Wattewickels 15 entfernt sich die Wickelhülse 6' aus dem Zwickel 10. Gleichzeitig verformt sich der Wattewickel 15 (gestrichelte Darstellung), der aufgrund der Wickelkraft zumindest teilweise in den Zwickel 10 gezogen wird. Aufgrund der permanenten Verformung durch die drehenden Wickelwalzen 5a, 5b und des drehenden Wattewickels 15 erwärmt sich der Wattewickel, wodurch klebrige Substanzen in der Baumwolle zu einem verstärkten Verkleben der Faserlagen und damit zu einer größeren Haarigkeit führen.The winding tube 6 is clamped on its end faces via two side plates (not shown) and by means of force elements, such as, for example a hydraulic or pneumatic cylinder, not shown, drawn along a guide 9 against the winding rollers 5a, 5b. At the start of the winding process, the winding tube 6 lies in the gusset 10 of the winding rollers 5a, 5b. As the diameter of the cotton roll 15 increases, the winding sleeve 6 'moves away from the gusset 10. At the same time, the cotton roll 15 deforms (broken line), which is at least partially pulled into the gusset 10 due to the winding force. Due to the permanent deformation by the rotating winding rollers 5a, 5b and the rotating cotton roll 15, the cotton roll heats up, as a result of which sticky substances in the cotton lead to an increased adhesion of the fiber layers and thus to a greater hairiness.

Um diese Nachteile zu beseitigen, wird erfindungsgemäß vorgeschlagen, mindestens eine der Wickelwalzen 5a, 5b zumindest mit ihrem Mantel oder Außenumfang elastisch zu gestalten, so dass die Verformungsarbeit von den Wickelwalzen 5a, 5b aufgenommen wird, und nicht vom Wattewickel. Vorzugsweise werden beide Wickelwalzen 5a, 5b zumindest teilweise elastisch gestaltet. Als elastisch wird im Sinne der Erfindung eine Nachgiebigkeit der Oberfläche auf dem Mantel bzw. dem Außenumfang betrachtet, bei der ein Wattewickel von mindestens 300 mm Durchmesser mit einer Anpresskraft von 15.000 N gegen die Wickelwalzen 5a, 5b eine Verformung der Wickelwalzen 5a, 5b von mindestens 1 mm Tiefe bewirkt.In order to eliminate these disadvantages, it is proposed according to the invention to make at least one of the winding rollers 5a, 5b elastic, at least with its jacket or outer circumference, so that the deformation work is absorbed by the winding rollers 5a, 5b and not by the cotton roll. Both winding rollers 5a, 5b are preferably designed to be at least partially elastic. For the purposes of the invention, elasticity is considered to be a resilience of the surface on the jacket or the outer circumference, in which a cotton roll of at least 300 mm in diameter with a contact pressure of 15,000 N against the winding rolls 5a, 5b a deformation of the winding rolls 5a, 5b of at least 1 mm depth.

In einer ersten Ausführungsform der Figur 2 bestehen die Wickelwalzen 5a, 5b weiterhin aus einem starren, runden Körper oder Kern 11a, 11b, auf den aber ein Ring 12a, 12b aus einem elastischen Material aufgezogen wird. Der Körper oder Kern 11a, 11b kann wie bisher aus einer Konstruktion aus Stahl oder einem Leichtmetall bestehen. Der Ring kann eine Dicke von 20 - 100 mm haben und eine Härte von 30 - 95 Shore A aufweisen. Der Ring 12a, 12b kann aus einem abriebfesten Kunststoff mit einer dichten Oberfläche bestehen, an der die Fasern der Watte nicht anhaften. Als Werkstoffe können Kunststoffe aus den Gruppen der Thermoplasten, Elastomeren und Duroplaste verwendet werden, vorzugsweise aus der Gruppe der Elastomere. Weiterhin können die Ringe 12a, 12b über die Wickelbreite eine integrierte Verstärkung aufweisen, so dass die elastische Nachgiebigkeit nicht nur punktuell auftritt, sondern immer über die gesamte Arbeitsbreite der Wickelwalzen 5a, 5b. Damit können lokale Dickstellen am Wattewickel 15 vermieden werden.In a first embodiment of the Figure 2 the winding rollers 5a, 5b continue to consist of a rigid, round body or core 11a, 11b, but onto which a ring 12a, 12b made of an elastic material is fitted. As before, the body or core 11a, 11b can consist of a construction made of steel or a light metal. The ring can have a thickness of 20 - 100 mm and a hardness of 30 - 95 Shore A. The ring 12a, 12b can consist of an abrasion-resistant plastic with a dense surface on which the fibers of the Don't stick cotton wool. Plastics from the groups of thermoplastics, elastomers and thermosets can be used as materials, preferably from the group of elastomers. Furthermore, the rings 12a, 12b can have an integrated reinforcement over the winding width, so that the elastic compliance occurs not only at certain points, but always over the entire working width of the winding rollers 5a, 5b. Local thick spots on the cotton roll 15 can thus be avoided.

Um die Oberfläche verschleissbarer zu gestalten und vor allen Dingen das Anhaften von Faserpartikeln möglichst zu vermeiden, ist in einer weiteren Ausgestaltung der Erfindung vorgesehen, über den elastischen Ring 12a, 12b einen Mantel 13a, 13b aus einem dünnen Federstahl aufzuziehen. Der Mantel 13a, 13b kann eine Dicke von 0,3 bis 3 mm aufweisen und vorzugsweise aus einem korrosionsbeständigem Metall bestehen.In order to make the surface more wearable and, above all, to avoid the adherence of fiber particles as far as possible, a further embodiment of the invention provides for a jacket 13a, 13b to be made of a thin spring steel via the elastic ring 12a, 12b. The jacket 13a, 13b can have a thickness of 0.3 to 3 mm and preferably consist of a corrosion-resistant metal.

Eine alternative Ausführungsform sieht vor, den Ring 12a, 12b als gasgefüllten Reifen auszuführen, der ggf. eine interne Verstärkung mittels Stahlgürtel aufweist. Diese Ausführungsform hat den Vorteil, dass über den Gasdruck die Härte bzw. Elastizität der Wickelwalze 5a, 5b einstellbar ist, wodurch eine Anpassung an verschiedene Faserqualitäten möglich wird. Insbesondere bei Faserqualitäten, die nur geringe oder keine klebrigen Substanzen aufweisen, können die Wickelwalzen 5a, 5b härter eingestellt werden um mit ggf. höherer Geschwindigkeit zu fahren, da die aufgrund der Walkarbeit entstehende Temperaturerhöhung innerhalb des Wattewickels 15 nur eine geringe Auswirkung auf die Qualität bzw. Haarigkeit hat. Weiterhin ist es möglich, über eine Vorrichtung zur Veränderung des Gasdruckes die Härte der Wickelwalzen 5a, 5b über die Dauer des Wickelprozesses zu verändern. Damit kann der Wattewickel 15 am Anfang mit einer geringeren Härte gewickelt werden, und zum Ende des Wickelvorganges härter gewickelt werden, um beispielsweise den Wickeldurchmesser bei der vorgegebenen Wickellänge von 300 m nicht über 600 mm ansteigen zu lassen, was für das Handling an der Kämmmaschine ungünstig wäre.An alternative embodiment provides for the ring 12a, 12b to be designed as a gas-filled tire, which may have an internal reinforcement by means of a steel belt. This embodiment has the advantage that the hardness or elasticity of the winding roller 5a, 5b can be adjusted via the gas pressure, which enables adaptation to different fiber qualities. Especially with fiber qualities that have only little or no sticky substances, the winding rollers 5a, 5b can be set harder in order to run at a higher speed if necessary, since the temperature increase within the wadding roll 15 resulting from the flexing work has only a minor effect on the quality or Has hairiness. Furthermore, it is possible to change the hardness of the winding rollers 5a, 5b over the duration of the winding process by means of a device for changing the gas pressure. In this way, the cotton roll 15 can be wound with a lower hardness at the beginning, and can be wound harder at the end of the winding process, for example not by the winding diameter at the specified winding length of 300 m to rise above 600 mm, which would be unfavorable for handling on the comber.

Alternativ kann die Härte der Wickelwalzen 5a, 5b auch über eine in den Reifen gefüllte Flüssigkeit eingestellt werden, deren Viskosität beispielsweise elektrorheologisch veränderbar ist. Die Ausführungsform mit der Flüssigkeit hat den Vorteil, dass mit kompakteren Bauteilen höhere Drücke erzeugt werden können. Außerdem ist bei möglichen Leckagen ein hydraulisches System ungefährlicher und im Hinblick auf den Brand- und Explosionsschutz ein sichereres Verfahren. Beide Varianten können mittels Sensor-Aktor-Systeme aktiv angesteuert werden und die Härte bzw. Elastizität der Wickelwalzen 5a, 5b über den Wickelprozess verstellt werden.Alternatively, the hardness of the winding rollers 5a, 5b can also be adjusted by means of a liquid filled in the tire, the viscosity of which can be changed, for example, electrorheologically. The embodiment with the liquid has the advantage that higher pressures can be generated with more compact components. In addition, a hydraulic system is less dangerous in the event of possible leaks and a safer method in terms of fire and explosion protection. Both variants can be actively controlled by means of sensor-actuator systems and the hardness or elasticity of the winding rollers 5a, 5b can be adjusted via the winding process.

Beide Ausführungsformen können ebenfalls mit einem Mantel 13a, 13b aus Federstahl kombiniert werden, wodurch die Faseranhaftung reduziert wird.Both embodiments can also be combined with a jacket 13a, 13b made of spring steel, whereby the fiber adhesion is reduced.

Der gas- oder flüssigkeitsgefüllte Ring kann aus einem Kunststoff oder Kautschukmaterial herstellbar sein, oder in Kombination mit einer Flüssigkeitsfüllung aus einem metallischen Material herstellbar sein.The gas or liquid-filled ring can be produced from a plastic or rubber material, or can be produced in combination with a liquid filling from a metallic material.

In dem Ausführungsbeispiel der Figur 3 besteht der Ring 12a, 12b aus massivem Gummi mit einer größeren Dicke bzw. Wandstärke, die bis zu 200 mm betragen kann. Der Ring 12a, 12b wird auf einen Träger 14a, 14b aufgezogen, der ähnlich wie eine Felge aus einem gepressten bzw. gezogenen Blechteil bestehen kann. Auch dieser Ring 12a, 12b kann eine Härte von 30 - 95 Shore A und zusätzlich eine über die Wickelbreite integrierte Verstärkung aufweisen. In einer weiteren Ausführungsform kann die Oberfläche bzw. Mantelfläche der Ringe 12a, 12b mittels chemischer oder thermischer Behandlung eine geschlossene Oberfläche aufweisen, an der möglichst keine Fasern anhaften. Auch nach dieser Ausführungsform ist eine zusätzliche Ummantelung mit einem Mantel 13a, 13b aus beispielsweise Federstahl möglich.In the embodiment of the Figure 3 is the ring 12a, 12b made of solid rubber with a greater thickness or wall thickness, which can be up to 200 mm. The ring 12a, 12b is mounted on a carrier 14a, 14b which, like a rim, can consist of a pressed or drawn sheet metal part. This ring 12a, 12b can also have a hardness of 30-95 Shore A and additionally a reinforcement integrated over the winding width. In a further embodiment, the surface or lateral surface of the rings 12a, 12b can have a closed surface by means of chemical or thermal treatment, to which no fibers adhere if possible. Even after this Embodiment, an additional jacket with a jacket 13a, 13b made of spring steel, for example, is possible.

In Figur 4 ist ein Schnitt durch eine Wickelwalze 5a dargestellt, bei dem auf einem Träger 14a aus beispielsweise Stahl ein Ring 12a aus einem weichen Kunststoff wie beispielsweise Naturkautschuk aufgezogen wurde. Der Ring 12a aus Naturkautschuk kann beispielsweise eine Härte von 30 Shore A aufweisen. Bei einer Anpresskraft von zweimal 7000 N durch die beidseitig angeordneten Zylinder an der Führung 9 wird der Ring 12a durch den Wattewickel 15 bis zu 16 mm lokal eingedrückt. Dadurch, dass der Ring 12a auf dem Außenumfang beim Wickeln nachgiebig und elastisch ist, muss sich das Material des Ringes 12a aufgrund der lokalen Durchmesserverkleinerung seitlich in die Stirnseiten wegdrücken. Dies führt zu einer Kontur, wie sie verstärkt in Figur 4 dargestellt ist. An den Rändern der Wickelwalze 5a können sich Materialanhäufungen ergeben, die in Form einer Spitze den Durchmesser der Wickelwalze 5a vergrößern können und damit den Wattewickel 15 an seinen Kanten beschädigen können.In Figure 4 a section through a winding roller 5a is shown, in which a ring 12a made of a soft plastic, such as natural rubber, was drawn on a carrier 14a made of steel, for example. The ring 12a made of natural rubber can have a hardness of 30 Shore A, for example. With a pressing force of twice 7000 N by the cylinders on the guide 9 arranged on both sides, the ring 12a is pressed in locally by the cotton roll 15 up to 16 mm. Because the ring 12a is flexible and elastic on the outer circumference during winding, the material of the ring 12a has to be pushed laterally into the end faces due to the local diameter reduction. This leads to a contour as intensified in Figure 4 is shown. At the edges of the winding roller 5a, material can accumulate, which in the form of a tip can enlarge the diameter of the winding roller 5a and thus damage the cotton roll 15 at its edges.

Um dies zu verhindern ist vorgesehen, zumindest den Ring 12a an seinen Stirnseiten konkav zu gestalten, also zur Drehachse der Wickelwalze 5a hin dünner zu gestalten, als am Außenumfang, um dem Material des elastischen Ringes 12a Platz zur gezielten Verformung zu geben. Die Breite der Wickelwalze 5a nimmt damit zum Außenumfang hin so zu, dass bei einer lokalen Verformung des Ringes 12a immer eine über den Querschnitt bzw. der Oberfläche der Wickelwalze 5a ebene Fläche verbleibt, so dass der Wattewickel über seine Breite mit einer konstanten ebenen Auflagefläche gewickelt wird.In order to prevent this, it is provided that at least the end faces of the ring 12a are concave, that is to say thinner towards the axis of rotation of the winding roller 5a than on the outer circumference, in order to give the material of the elastic ring 12a space for targeted deformation. The width of the winding roller 5a thus increases towards the outer circumference such that when the ring 12a is deformed locally, there is always a flat surface over the cross section or the surface of the winding roller 5a, so that the cotton roll is wound over its width with a constant, flat contact surface becomes.

Allen Ausführungsformen ist gemeinsam, dass die bisherige Verformungsarbeit des Wattewickels auf die Wickelwalzen 5a, 5b zum großen Teil übergeht, wodurch die Wattewickel mit einem geringeren Temperaturniveau gewickelt werden können. Damit sinkt die Haarigkeit der Wattewickel und der nachfolgende Kämmprozess kann in einer höheren Qualität erfolgen.It is common to all of the embodiments that the previous deformation work of the cotton roll is largely transferred to the winding rollers 5a, 5b, as a result of which the cotton rolls can be wound at a lower temperature level. This reduces the hairiness of the wadding and the subsequent combing process can be done in a higher quality.

Mit der vorgenannten Erfindung kann das klassische Wickelkonzept beibehalten werden, wodurch sich die Wartungsanfälligkeit und die Komplexität des Systems im Vergleich zu einem Bandwickler in sinnvollen Grenzen hält. Ein weiterer Vorteil besteht in der Nachrüstbarkeit bestehender Wickelmaschinen, wenn deren Wickelwalzen 5a, 5b aufgrund von Fehlbedienung oder Verschleiß ausgetauscht werden müssen.With the above-mentioned invention, the classic winding concept can be retained, whereby the susceptibility to maintenance and the complexity of the system are kept within reasonable limits in comparison to a tape winder. Another advantage is that existing winding machines can be retrofitted if their winding rollers 5a, 5b have to be replaced due to incorrect operation or wear.

BezugszeichenReference numerals

11
WickelmaschineWinding machine
22nd
EinlaufbereichInfeed area
33rd
FaserbandSliver
4a - 4c4a - 4c
DruckwalzenPressure rollers
5a, 5b5a, 5b
WickelwalzeWinding roller
6,6'6.6 '
WickelhülseWinding tube
77
MaterialflussrichtungMaterial flow direction
88th
VorverdichterPre-compressor
99
Führungguide
1010th
Zwickelgore
11a, 11b11a, 11b
Kerncore
12a, 12b12a, 12b
Ringring
13a, 13b13a, 13b
Mantelcoat
14a, 14b14a, 14b
Trägercarrier
1515
WattewickelCotton wrap

Claims (9)

  1. A winding machine (1), which doubles and drafts several fibre bands together to form a lap, wherein the formed lap is wound onto a lap bobbin (6, 6') by means of two winding rolls (5a, 5b) or at least one winding roll and a belt to form a lap roll for feeding to a combing machine,
    characterized in that at least one winding roll (5a, 5b) includes an elastic shell (13a, 13b), respectively exterior circumference, wherein the at least one winding roll (5a, 5b) comprises a rigid non-elastic core (11a, 11b) or carrier (14a, 14b), on which an elastic ring (12a, 12b) is disposed across the entire working width, and in that the elastic ring (12a, 12b) includes at least one integral reinforcement extending across the working width.
  2. The winding machine according to claim 1, characterized in that the ring (12a, 12b) consists of massive plastic material.
  3. The winding machine according to claim 1, characterized in that the ring (12a, 12b) has a thickness, respectively a wall thickness of 20 to 200 mm.
  4. The winding machine according to any of the claims 1 to 3, characterized in that the ring (12a, 12b) made from plastic material has a hardness according to Shore A of 30 to 95.
  5. A winding machine (1), which doubles and drafts several fibre bands together to form a lap, wherein the formed lap is wound onto a lap bobbin (6, 6') by means of two winding rolls (5a, 5b) or at least one winding roll and a belt to form a lap roll for feeding to a combing machine, characterized in that at least one winding roll (5a, 5b) includes an elastic envelope (13a, 13b), respectively exterior circumference, wherein the at least one winding roll (5a, 5b) comprises a rigid non-elastic core (11a, 11b) or carrier (14a, 14b), on which an elastic ring (12a, 12b) is disposed across the entire working width, wherein the elastic ring (12a, 12b) includes a surrounding hollow chamber, which is filled with a medium, wherein the hardness of the elastic ring (12a, 12b) is adjustable via the pressure of the medium.
  6. The winding machine according to claim 5, characterized in that the medium is a liquid, the viscosity thereof being electro-rheologically adjustable.
  7. The winding machine according to claim 1 or 5, characterized in that a thin elastic shell, which preferably consists of spring steel, is disposed over the elastic ring (12a, 12b).
  8. A method for winding a lap, wherein several fibre bands together are doubled and drafted, and the lap resulting therefrom is wound onto a lap bobbin (6, 6') by means of at least two winding rolls (5a, 5b) or at least one winding roll and a belt, characterized in that the at least one winding roll (5a, 5b) comprises a rigid non-elastic core (11a, 11b) or a carrier (14a, 14b), on which an elastic ring (12a, 12b) is disposed across the entire working width, wherein the elastic ring (12a, 12b) includes a surrounding hollow chamber, which is filled with a medium, and in that the hardness of the envelope, respectively of the exterior circumference of the at least one winding roll is adjustable during the winding procedure.
  9. The method according to claim 8, characterized in that the hardness of the at least one winding roll (5a, 5b) increases as the winding procedure progresses.
EP16000361.2A 2015-04-14 2016-02-13 Winding machine for creating a rolled lap and method for winding a lap Active EP3081679B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015105670.4A DE102015105670A1 (en) 2015-04-14 2015-04-14 Winding machine for the production of cotton wool and method for winding a cotton wool

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EP3081679A1 EP3081679A1 (en) 2016-10-19
EP3081679B1 true EP3081679B1 (en) 2020-04-08

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DE102017124790A1 (en) 2017-10-24 2019-04-25 TRüTZSCHLER GMBH & CO. KG Apparatus and method for forming a coil

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EP3081679A1 (en) 2016-10-19
CN106044324A (en) 2016-10-26
DE102015105670A1 (en) 2016-10-20

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