EP0086412B1 - Method of and device for making plastics bundles of bristles and individual bristles - Google Patents

Method of and device for making plastics bundles of bristles and individual bristles Download PDF

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Publication number
EP0086412B1
EP0086412B1 EP83101053A EP83101053A EP0086412B1 EP 0086412 B1 EP0086412 B1 EP 0086412B1 EP 83101053 A EP83101053 A EP 83101053A EP 83101053 A EP83101053 A EP 83101053A EP 0086412 B1 EP0086412 B1 EP 0086412B1
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EP
European Patent Office
Prior art keywords
bundle
bristles
monofilaments
cross
bobbin
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EP83101053A
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German (de)
French (fr)
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EP0086412A2 (en
EP0086412A3 (en
Inventor
Georg Weihrauch
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Pedex GmbH
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Pedex GmbH
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Priority to AT83101053T priority Critical patent/ATE45473T1/en
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    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D1/00Bristles; Selection of materials for bristles
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D1/00Bristles; Selection of materials for bristles
    • A46D1/08Preparing uniform tufts of bristles
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D3/00Preparing, i.e. Manufacturing brush bodies

Definitions

  • the invention relates to a process for the production of bristle bundles made of plastic for brushes, brooms, brushes or the like.
  • endless monofilaments and combining them in a number that corresponds wholly or in part to the number of bristles in the bundle and the resulting bundle of strands is wound onto a spool from which the bundle of strands is withdrawn cyclically or continuously during processing and cut to the bristle length, and before or after each bristle bundle is attached to the brush, broom or brush body.
  • plastic bristles offer the advantage that they can be produced from endless monofilaments by extrusion or spinning. The monofilaments are then combined into a strand, which is wrapped in paper or film packaging and cut to the desired bristle length.
  • the invention has for its object to further develop the method described above in such a way that the influence of the lack of creep resistance of the plastic is reduced and that even after prolonged storage perfect bristles can be obtained.
  • This object is achieved in that the bundle strand formed when the monofilaments are brought together is twisted and wound up in the cheese package.
  • the advantage is initially achieved that the individual monofilament is supported many times within the strand, so that all monofilaments of a strand on the spool are curved with the same radius. Furthermore, differences in length are compensated for and individual monofilaments cannot come loose from the assembly during winding and storage of the bobbin and can be drawn onto the bobbin more strongly.
  • the twisted bundle strand is not wound on a spool core in the circumferential direction, but with an adjustable pitch, with the result that the radius of curvature of the bundle strand or the monofilament can be increased considerably compared to a parallel winding with the same size of the spool.
  • the method according to the invention has a further considerable advantage. While previously it was only possible to use flange coils in the production of endless bristles, simple flangeless coil sleeves or coil cores can now be used, since a cross wrap has the advantage that the individual winding layers cannot slip off the coil.
  • the coil core which can be designed in its simplest form as a cardboard tube, has a significantly lower weight than a flange coil, so that the ratio of tare weight and net weight is considerably more favorable.
  • the material and transport costs can be reduced considerably. Practical studies have shown that, for example, the cost of the coil compared to conventional flange coils is only about a third, and at the same time it can accommodate up to eight times the bristle weight. At the same time, compared to the flange coils, there is a considerably smaller space requirement, especially when storing and transporting the empty coils, especially if the coil sleeves are conical.
  • the cross-wound method also permits winding without a core.
  • the spools are completely saved and the cheaper storage and transportation costs are even greater.
  • the procedure is preferably such that the twisted bundle strand or strands are initially in a parallel position, e.g. B. wound on one or more large production spools, then deducted from this parallel winding and then unwound in the cheese winding process.
  • a parallel position e.g. B. wound on one or more large production spools
  • this allows the manufacture of the bundle strand and the cross-winding to be separated from one another by using the parallel winding as a buffer. This also makes it possible to wind up several bundle strands from different production spools on a spool core in the cross winding process if necessary.
  • the invention is based on a known device which consists of one or more extrusion lines for producing endless monofilaments, a device for merging the monofilaments into a bundle strand and a winding bobbin for winding up the bundle strand.
  • the above-mentioned device is characterized by a device for twisting the bundle strand and a cross-winding machine with delivery mechanism receiving the twisted bundle strand and a flange-less, large-diameter bobbin tube arranged thereon and receiving the cross-winding.
  • it is also possible to produce a self-supporting cross wrap without a coil sleeve.
  • twisting device such as twisting device, cross winder with delivery mechanism, flangeless, cylindrical or conical bobbin tubes and core-free winding are known in textile technology, for which reason a detailed description can be omitted here.
  • a winding stand is arranged behind the twisting device, which initially serves to form a parallel winding, and that the bobbin thus produced with parallel winding can be attached to the supply unit of the cross-winder.
  • FIG. 1a several extruders 1 can be seen, which produce a variety of monofilament endless bristles 2.
  • the monofilaments are brought together at 3 to form a strand 5 and as a parallel strand 5 to a twisting device 11.
  • the then twisted bundle strand 12 is drawn off from this twisting device by means of a coil block 13 and a flange coil 14 and wound up into a parallel winding 15 (FIG. 1a).
  • the twisted bundle strand 12 is drawn off from the parallel winding 15 of the flange spool 14, which is optionally converted into a vertical position, via a delivery mechanism 4 from a cheese winder 6 (FIG. 1b).
  • This also has a cylindrical bobbin 7 of large diameter, on which a self-supporting cylindrical cross wrap 8 is produced from the bundle strand 12.
  • a conical bobbin tube 16 can also be arranged on the cheese winder 6, so that a conical bobbin 17 is formed (FIG. 1c).
  • the device shown in FIG. 2 is located in front of the brush, broom or brush machine. It either has, as shown in the upper left part, several horizontally mounted axes for receiving the bobbin tube 7 or the cheese 8 in a horizontal position, or, as shown in the lower left part of FIG. 3, several vertical axes for receiving the bobbin tubes 7 or the cross wrap in a vertical position.
  • a take-off device 9 is arranged behind the receptacles for the bobbin tubes 7 and pulls off the bundle strands from the bobbin tubes 7, the withdrawal taking place approximately tangentially when the bobbin tubes 7 are stored horizontally, but axially parallel to the cross-winding 8 when stored vertically.
  • a cutting device 10 is arranged, which cuts the bundle strand intermittently to the desired bristle length, so that the bristle bundles on the machine behind, but otherwise known, in the body of the implement, for. B. a brush, a brush, a broom or the like. can be used.

Abstract

In a process for producing bristle tuft material or separate bristles of plastic or synthetic resin for making sweeping brushes, brooms or housepainters' and artists' brushes, endless monofilaments are extruded and then directly wound on a bobbin or guided together in the form of tow, such tow then being twisted and cross wound onto a bobbin without end flanges so that, for a given diameter or size of bobbin, the material is less sharply bent, and will be less permanently curled when taken off the bobbin. Furthermore it is possible for a much greater length of endless monofilament material to be put in a single package so that less of the weight of such a package is made up by the weight of the bobbin. From the point of view of production engineering, there is the useful effect that the monofilaments or the twisted tow may be run off parallel to the axis of the cross wound package and the drawing off part of the brush making machine made of simpler design.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Borstenbündeln aus Kunststoff für Bürsten, Besen, Pinsel od.dgl., indem Endlos-Monofile hergestellt und diese in einer ganz oder teilweise der Borstenzahl im Bündel entsprechenden Anzahl zusammengeführt werden und der entstehende Bündelstrang auf eine Spule aufgewickelt wird, von der der Bündelstrang bei der Verarbeitung taktweise oder kontinuierlich abgezogen und auf Borstenlänge geschnitten, und zuvor oder danach jedes Borstenbündel am Bürsten-, Besen-oder Pinselkörper befestigt werden.The invention relates to a process for the production of bristle bundles made of plastic for brushes, brooms, brushes or the like. By producing endless monofilaments and combining them in a number that corresponds wholly or in part to the number of bristles in the bundle and the resulting bundle of strands is wound onto a spool from which the bundle of strands is withdrawn cyclically or continuously during processing and cut to the bristle length, and before or after each bristle bundle is attached to the brush, broom or brush body.

Die Herstellung von Borsten und deren Verarbeitung in der Bürsten-, Besen- und Pinselindustrie erfolgt seit Jahrzehnten im wesentlichen unverändert. Wie bei der Verarbeitung von Naturborsten muß auch bei Kunststoffborsten - mit Ausnahme dort, wo nur Einzelborsten eingesetzt werden - zunächst ein Bündel hergestellt werden, in welchem die Borsten in der gewünschten Anzahl vorliegen. Dieses Borstenbündel wird dann in den Bürsten-, Besen- oder Pinselkörper eingesetzt und an diesem befestigt, z.B. durch Stopfen, Kleben, Schweißen (bei Kunststoffborsten), Kitten od.dgl. Kunststoffborsten bieten dabei verarbeitungstechnisch den Vorteil, daß sie aus Endlos-Monofilen im Wege des Extrudierens oder Spinnens hergestellt werden können. Die Monofile werden dann zu einem Strang zusammengefaßt, dieser in eine Papier- oder Folienverpackung eingehüllt und auf die gewünschte Borstenlänge zugeschnitten.The manufacture of bristles and their processing in the brush, broom and brush industry has been essentially unchanged for decades. As with the processing of natural bristles, with plastic bristles - with the exception of where only single bristles are used - a bundle must first be produced in which the bristles are present in the desired number. This bundle of bristles is then inserted into and attached to the brush, broom or brush body, e.g. by plugging, gluing, welding (with plastic bristles), kittens or the like. In terms of processing technology, plastic bristles offer the advantage that they can be produced from endless monofilaments by extrusion or spinning. The monofilaments are then combined into a strand, which is wrapped in paper or film packaging and cut to the desired bristle length.

Bei der Verarbeitung in der Bürsten-, Besen-und Pinselindustrie muß dann das Borstenbündel von Hand von seiner Verpackung befreit und fortlaufend in das Magazin der Bürsten-, Besen- oder Pinselmaschine eingegeben werden. Damit konnte zwar - gegenüber Naturborsten - eine erhebliche Vereinfachung und Verbilligung bei der Herstellung der Borsten erreicht werden, ihre Verarbeitung jedoch blieb unverändert kostenaufwendig. So muss z.B. das Maschinenpersonal zwischen 15 und 30% der Zeit - je nach Verfahren - für die Versorgung der Maschine mit Borsten aufwenden.When processing in the brush, broom and brush industry, the bundle of bristles must then be freed of its packaging by hand and continuously inserted into the magazine of the brush, broom or brush machine. Although this - compared to natural bristles - made it considerably easier and cheaper to manufacture the bristles, their processing remained costly. For example, the machine personnel spend 15 to 30% of the time - depending on the procedure - for supplying the machine with bristles.

Seit vielen Jahren ist man bemüht, diesen aufwendigen Verarbeitungsgang zu sparen und statt dessen Endlosborsten unmittelbar zu verarbeiten. So ist es bekannt (US-A-2 710 774) Endlos-Monofile auf einer Flanschspule aufzuwickeln und eine der Anzahl der Borsten in einem Bündel entsprechende Anzahl von Spulen an der Verarbeitungsmaschine zu lagern. Die Monofile werden von den Spulen abgezogen und zu einem multifilen Strang zusammengeführt, bei dem dann an der Maschine einzelne Borstenbündel abgelängt und nacheinander an dem Bürstenkörper befestigt werden. Dieses Verfahren ist in der Praxis nicht durchführbar, weil es insbesondere bei größerer Borstenzahl in einem Bündel unmöglich ist, die hierfür benötigten Monofile einwandfrei zusammenzuführen. Für die Spulenhalterung ist ein enormer Platzbedarf erforderlich und es läßt sich auch kaum vermeiden, daß die auf einen engen Querschnitt zusammengeführten Monofile Schlaufen oder gar Schlingen bilden, die zu Ausschuß führen. Ferner ist jedoch Monofil aufgrund der Lagerung auf der Spule gekrümmt und innerhalb des Bündels sind dann Borsten unterschiedlicher Krümmung und in unterschiedlicher Lage vorhanden. Schließlich ist auch die Leistung der Monofile sehr begrenzt, da immer nur ein Bündel erzeugt und befestigt werden muß, bevor das nächste Bündel geschnitten und dem Bürstenkörper zugeführt werden kann.For many years, efforts have been made to save this complex processing step and instead to process endless bristles directly. It is known (US-A-2 710 774) to wind endless monofilaments on a flange spool and to store a number of spools corresponding to the number of bristles in a bundle on the processing machine. The monofilaments are withdrawn from the spools and brought together to form a multifilament strand, in which individual bundles of bristles are then cut to length on the machine and attached to the brush body one after the other. This method cannot be carried out in practice, because it is impossible, particularly with a large number of bristles in a bundle, to combine the monofilaments required for this purpose without problems. An enormous amount of space is required for the bobbin holder and it is also difficult to avoid the fact that the monofilaments merged into a narrow cross section form loops or even loops that lead to rejects. Furthermore, monofilament is curved due to the bearing on the spool, and bristles of different curvature and in different positions are then present within the bundle. Finally, the performance of the monofilaments is also very limited, since only one bundle has to be generated and attached before the next bundle can be cut and fed to the brush body.

Bei einer vorteilhaften Arbeitsweise ist es bekannt, einen Bündelstrang aus Endlos-Monofilen auf einer Flanschspule in Parallellage aufzuwikkein. Die Flanschspule mit dem Parallelwickel wird dann an den Bürsten- bzw. Besenhersteller geliefert. Die Bürsten- bzw. Besenmaschine besitzt eine Aufnahme für die Flanschspule, von der der Bündelstrang etwa tangential und taktweise abgezogen und einer Schneideinrichtung zugeführt wird, die den Bündelstrang auf die gewünschte Borstenlänge ablängt (DE-A-2849510, US-A-3408112, US-A-2 035 709, US-A-4 132 449). Das einzelne Borstenbündel gelangt dann direkt in die Stopfwerkzeuge zur Befestigung am Bürsten- oder Besenkörper. Es sind mehrere Maschinen zur Verarbeitung solcher Endlosborsten entwickelt worden. Derartige Lösungen haben sich aber in der Praxis nicht durchgesetzt.In an advantageous mode of operation, it is known not to wrap a bundle of continuous monofilaments on a flange spool in a parallel position. The flange coil with the parallel winding is then delivered to the brush or broom manufacturer. The brush or broom machine has a receptacle for the flange coil, from which the bundle strand is drawn off approximately tangentially and intermittently and fed to a cutting device which cuts the bundle strand to the desired bristle length (DE-A-2849510, US-A-3408112, US) -A-2 035 709, US-A-4 132 449). The individual bristle bundle then goes directly into the tamping tools for attachment to the brush or broom body. Several machines for processing such endless bristles have been developed. However, such solutions have not become established in practice.

Verfahren der zuvor geschilderten oder ähnlichen Art haben den Nachteil, daß bei vertretbarer Baugröße und handhabungsfähigem Gewicht der Flanschspulen, deren Durchmesser nicht allzu groß werden darf, um eine ausreichende Länge unterbringen zu können. Dies führt dazu, daß der Bündelstrang vor allem im inneren Bereich der Flanschspule mit einem vergleichsweise kleinen Krümmungsradius aufgewickelt werden muß. Da annähernd jeder Kunststoff, vor allem aber die für Borsten eingesetzten Kunststoffe keine ausreichende Kriechfestigkeit besitzen bzw. Kaltfluß-Erscheinungen zeigen, führt insbesondere eine längere Lagerung auf der Spule zu einer bleibenden Krümmung, die durch die Rückstellkräfte der Borste nicht überwunden werden kann. Das geradlinige Ausrichten der Borste ist praktisch unmöglich. Es dürfen deshalb solche Spulen zwischen dem Wickelvorgang und der Verarbeitung nicht allzu lange gelagert werden. Hinzukommt, daß sich einzelne Strangwindungen beim Aufwikkein auf die Spule oder durch das Kriechen zwischen anderen Windungen hineinziehen, so daß es beim Abwickeln zur Schlaufenbildung kommt. Auch können die Monofile aufgrund unterschiedlichen Zeitverhaltens Längendifferenzen aufweisen, die wiederum zur Schlaufenbildung beim Abziehen des Strangs führen.Methods of the type described above or similar have the disadvantage that, with a reasonable size and manageable weight of the flange coils, the diameter of which must not be too large in order to accommodate a sufficient length. This means that the bundle of strands must be wound up with a comparatively small radius of curvature, especially in the inner region of the flange coil. Since almost every plastic, but especially the plastics used for bristles do not have sufficient creep resistance or show cold flow phenomena, longer storage on the coil in particular leads to a permanent curvature which cannot be overcome by the restoring forces of the bristle. Aligning the bristle in a straight line is practically impossible. Such coils must therefore not be stored for too long between the winding process and processing. Added to this is the fact that individual strand windings pull into the spool during winding up or creep between other windings, so that loops are formed during unwinding. The monofilaments may also have length differences due to different time behavior, which in turn lead to the formation of loops when the strand is pulled off.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs beschriebene Verfahren dahingehend weiterzuentwickeln, daß der Einfluß der mangelnden Kriechfestigkeit des Kunststoffs reduziert und auch nach längerer Lagerung noch einwandfreie Borsten erhalten werden können.The invention has for its object to further develop the method described above in such a way that the influence of the lack of creep resistance of the plastic is reduced and that even after prolonged storage perfect bristles can be obtained.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der beim Zusammenführen der Monofile entstehende Bündelstrang verdrillt und im Kreuzspulverfahren aufgewickelt wird.This object is achieved in that the bundle strand formed when the monofilaments are brought together is twisted and wound up in the cheese package.

Durch das Verdrillen des Borstenstrangs wird zunächst der Vorteil erreicht, daß das einzelne Monofil innerhalb des Strangs vielfach abgestützt ist, so daß sämtliche Monofile eines Strangs auf der Spule mit gleichem Radius gekrümmt sind. Ferner werden Längendifferenzen ausgeglichen und es können sich beim Aufwickeln und Lagern der Spule auch nicht einzelne Monofile aus dem Verband lösen und auf die Spule stärker aufziehen. Beim Kreuzspulverfahren wird der verdrillte Bündelstrang nicht in Umfangsrichtung, sondern mit einer einstellbaren Steigung auf einem Spulenkern aufgewickelt mit dem Ergebnis, daß der Krümmungsradius des Bündelstrangs bzw. des Monofils bei gleicher Baugröße der Spule gegenüber einem Parallelwickel erheblich vergrößert werden kann. Selbst wenn dieser Krümmungsradius durch Kaltfluß nicht mehr aufhebbar sein sollte, stört dies bei der späteren Verarbeitung der Borstenbündel nicht, da nach dem Zuschneiden die Länge der einzelnen Borste klein genug ist, um ein annähernd geradliniges Erzeugnis zu erhalten. Auch wird durch die Kreuzwicklung verhindert, daß sich einzelne Bündelstränge aus dem Wickelverband lösen und Stärke auf die Spule aufziehen, da jeder Strang mehrfach von den Strängen der darunter befindlichen Lage abgestützt wird.By twisting the bristle strand, the advantage is initially achieved that the individual monofilament is supported many times within the strand, so that all monofilaments of a strand on the spool are curved with the same radius. Furthermore, differences in length are compensated for and individual monofilaments cannot come loose from the assembly during winding and storage of the bobbin and can be drawn onto the bobbin more strongly. In the cross-winding method, the twisted bundle strand is not wound on a spool core in the circumferential direction, but with an adjustable pitch, with the result that the radius of curvature of the bundle strand or the monofilament can be increased considerably compared to a parallel winding with the same size of the spool. Even if this radius of curvature can no longer be eliminated by cold flow, this does not interfere with the later processing of the bristle bundles, since after cutting the length of the individual bristle is small enough to obtain an approximately rectilinear product. The cross winding also prevents individual bundle strands from detaching from the winding assembly and pulling strength onto the spool, since each strand is supported several times by the strands of the layer underneath.

Darüberhinaus bringt das erfindungsgemäße Verfahren einen weiteren beachtlichen Vorteil. Während bisher bei der Herstellung von Endlosborsten ausschließlich Flanschspulen eingesetzt werden konnten, lassen sich nun einfache flanschlose Spulenhülsen bzw. Spulenkerne verwenden, da ein Kreuzwickel den Vorteil hat, daß die einzelnen Wickellagen von der Spule nicht abrutschen können. Der Spulenkern, der in seiner einfachsten Ausführung als Papphülse ausgebildet sein kann, weist ein wesentlich geringeres Gewicht als eine Flanschspule auf, so daß sich das Verhältnis von Tara- und Nettogewicht erheblich günstiger darstellt. Die Material- und Transportkosten lassen sich damit beachtlich reduzieren. Untersuchungen in der Praxis haben ergeben, daß beispielsweise die Kosten der Spule gegenüber herkömmlichen Flanschspulen nur etwa ein Drittel betragen, wobei zugleich bis zum achtfachen Borstengewicht untergebracht werden kann. Gleichzeitig ergibt sich gegenüber den Flanschspulen ein erheblich geringerer Raumbedarf, besonders bei der Lagerung und dem Transport der Leerspulen, insbesondere wenn die Spulenhülsen konisch gestaltet werden.In addition, the method according to the invention has a further considerable advantage. While previously it was only possible to use flange coils in the production of endless bristles, simple flangeless coil sleeves or coil cores can now be used, since a cross wrap has the advantage that the individual winding layers cannot slip off the coil. The coil core, which can be designed in its simplest form as a cardboard tube, has a significantly lower weight than a flange coil, so that the ratio of tare weight and net weight is considerably more favorable. The material and transport costs can be reduced considerably. Practical studies have shown that, for example, the cost of the coil compared to conventional flange coils is only about a third, and at the same time it can accommodate up to eight times the bristle weight. At the same time, compared to the flange coils, there is a considerably smaller space requirement, especially when storing and transporting the empty coils, especially if the coil sleeves are conical.

Es ist zwar bei einer anderen Art von Reinigungsbürsten, nämlich Autowaschbürsten bekannt (FR-A-2334322), Faserbündelstränge im Kreuzwickelverfahren auf eine Spule aufzubringen und den Strang von der Spule abzuziehen, um ihn dann in Bürstenwalzen einzuziehen. Hierbei handelt es sich aber lediglich um die aus der Textiltechnik bekannte Methode, denn für Autowaschbürsten werden bekanntlich schlaffe Fasern verwendet, die keinerlei Eigenstabilität haben und bei denen folglich auch das Wiederaufrichtvermögen keine Rolle spielt. Aus dem gleichen Grund treten auch nicht die bei Borsten vorhandenen Probleme hinsichtlich Krümmung, Kriechfestigkeit, Schlaufenbildung etc. auf bzw. beeinträchtigen diese Erscheinungen weder die Verarbeitung noch die Qualität des Produktes.In another type of cleaning brush, namely car wash brushes (FR-A-2334322), it is known to apply fiber bundle strands in a cross-winding process to a spool and to pull the strand from the spool in order to then pull it into brush rollers. However, this is only the method known from textile technology, because flaccid fibers are known to be used for car wash brushes, which have no inherent stability and in which consequently the ability to straighten up also plays no role. For the same reason, the problems with bristles with regard to curvature, creep resistance, loop formation etc. do not occur or these phenomena do not impair the processing or the quality of the product.

Das Kreuzspulverfahren läßt erfindungsgemäß auch ein Aufwickeln ohne Spulenkern zu. Bei diesen selbsttragenden Kreuzwickeln werden die Spulen völlig eingespart und die Verbilligung der Lagerung und Transportkosten ist noch größer.According to the invention, the cross-wound method also permits winding without a core. With these self-supporting cross winding, the spools are completely saved and the cheaper storage and transportation costs are even greater.

Durch den größeren Spuleninhalt werden sowohl die Laufzeiten beim Aufwickeln in der Borstenfertigung, als auch beim Abwickeln in der Bürsten-, Besen- und Pinselfertigung erheblich verlängert, so daß die Spulen weniger häufig ausgewechselt werden müssen.Due to the larger spool content, both the runtimes during winding in bristle production and during unwinding in brush, broom and brush production are considerably extended, so that the spools do not have to be replaced as often.

Bei dem erfindungsgemäßen Verfahren wird vorzugsweise so vorgegangen, daß der oder die verdrillten Bündelstränge zunächst in Parallellage, z. B. auf eine oder mehrere große Produktionsspulen aufgewickelt, daraufhin von diesem Parallelwickel abgezogen und anschließend im Kreuzspulverfahren abgewickelt werden. Dadurch lassen sich in verfahrenstechnischer Hinsicht die Herstellung des Bündelstrangs und das Kreuzwickeln voneinander trennen, indem als Zwischenspeicher der Parallelwickel dient. Dies ermöglicht auch, im Bedarsfall mehrere Bündelstränge von verschiedenen Produktionsspulen auf einen Spulenkern im Kreuzspulverfahren aufzuwickeln.In the method according to the invention, the procedure is preferably such that the twisted bundle strand or strands are initially in a parallel position, e.g. B. wound on one or more large production spools, then deducted from this parallel winding and then unwound in the cheese winding process. In terms of process engineering, this allows the manufacture of the bundle strand and the cross-winding to be separated from one another by using the parallel winding as a buffer. This also makes it possible to wind up several bundle strands from different production spools on a spool core in the cross winding process if necessary.

Zur Durchführung des Verfahrens geht die Erfindung von einer bekannten Vorrichtung aus, die aus ein oder mehreren Extrusionsstraßen zur Erzeugung von Endlos-Monofilen, einer Einrichtung zum Zusammenführen der Monofile zu einem Bündelstrang sowie einem Spulbock zum Aufwikkein des Bündelstrangs besteht. Die zuvor genannte Vorrichtung zeichnet sich erfindungsgemäß aus durch eine Einrichtung zum Verdrillen des Bündelstrangs und eine den verdrillten Bündelstrang aufnehmende Kreuzspulmaschine mit Lieferwerk und eine darauf angeordnete, den Kreuzwickel aufnehmende, flanschlose Spulenhülse großen Durchmessers. Erfindungsgemäß ist dabei auch die Herstellung eines selbsttragenden Kreuzwickels ohne Spulenhülse möglich.To carry out the method, the invention is based on a known device which consists of one or more extrusion lines for producing endless monofilaments, a device for merging the monofilaments into a bundle strand and a winding bobbin for winding up the bundle strand. According to the invention, the above-mentioned device is characterized by a device for twisting the bundle strand and a cross-winding machine with delivery mechanism receiving the twisted bundle strand and a flange-less, large-diameter bobbin tube arranged thereon and receiving the cross-winding. According to the invention, it is also possible to produce a self-supporting cross wrap without a coil sleeve.

Die erfindungsgemäß eingesetzten Einrichtungen, wie Verdrilleinrichtung, Kreuzspulmaschine mit Lieferwerk, flanschlose, zylindrische oder konische Spulenhülsen sowie ein kernfreies Wickeln sind in der Textiltechnik bekannt, weshalb eine nähere Beschreibung hier unterbleiben kann.The devices used according to the invention, such as twisting device, cross winder with delivery mechanism, flangeless, cylindrical or conical bobbin tubes and core-free winding are known in textile technology, for which reason a detailed description can be omitted here.

Mit Vorteil ist bei der zuvor geschilderten Vorrichtung vorgesehen, daß hinter der Verdrilleinrichtung ein Spulbock angeordnet ist, der zunächst zur Bildung eines Parallelwickels dient, und daß die solchermaßen hergestellte Spule mit Parallelwickel am Lieferwerk der Kreuzspulmaschine anbringbar ist. Hiermit lassen sich die Herstellung der Bündelstränge und die Erzeugung des Kreuzwickels räumlich und zeitlich voneinander trennen, was in verfahrenstechnischer Hinsicht einige Vorteile bietet.It is advantageously provided in the above-described device that a winding stand is arranged behind the twisting device, which initially serves to form a parallel winding, and that the bobbin thus produced with parallel winding can be attached to the supply unit of the cross-winder. This enables the production of the bundle strands and the production separate the cross wrap spatially and temporally from each other, which offers several advantages in terms of process technology.

Insgesamt schafft das erfindungsgemäße Verfahren für die Bürsten- und Pinselindustrie die Voraussetzungen für eine vollautomatische Fertigung.Overall, the method according to the invention for the brush and brush industry creates the conditions for fully automatic production.

Nachstehend ist die Erfindung anhand von Ausführungsbeispielen beschrieben, die in der Zeichnung wie folgt wiedergegeben sind:

  • Figur 1a, b, c Eine schematische Ansicht einer Ausführungsform zur Herstellung eines Kreuzwikkels aus einem Bündelstrang;
  • Figur 2 eine schematische Ansicht einer Vorrichtung zur Weiterverarbeitung der Kreuzwickel.
The invention is described below using exemplary embodiments which are shown in the drawing as follows:
  • Figure 1a, b, c is a schematic view of an embodiment for producing a cross bend from a bundle strand;
  • Figure 2 is a schematic view of a device for further processing of the cross wrap.

In Figur 1a sind mehrere Extruder 1 erkennbar, die eine Vielzahl von monofilen Endlosborsten 2 erzeugen. Die Monofile werden bei 3 zu einem Strang 5 zusammengeführt und als Parallelstrang 5 zu einer Verdrilleinrichtung 11 geführt. Von dieser Verdrilleinrichtung wird der dann verdrillte Bündelstrang 12 mittels eines Spulenbocks 13 und einer Flanschspule 14 abgezogen und zu einem Parallelwickel 15 aufgewickelt (Fig. 1a).In Figure 1a, several extruders 1 can be seen, which produce a variety of monofilament endless bristles 2. The monofilaments are brought together at 3 to form a strand 5 and as a parallel strand 5 to a twisting device 11. The then twisted bundle strand 12 is drawn off from this twisting device by means of a coil block 13 and a flange coil 14 and wound up into a parallel winding 15 (FIG. 1a).

Anschließend wird der verdrillte Bündelstrang 12 von dem Parallelwickel 15 der Flanschspule 14, die gegebenenfalls in vertikale Lage umgesetzt wird, über ein Lieferwerk 4 von einer Kreuzspulmaschine 6 abgezogen (Fig. 1b). Auch diese weist wieder eine zylindrische Spulenhülse 7 großen Durchmessers auf, auf der aus dem Bündelstrang 12 ein selbsttragender zylindrischer Kreuzwickel 8 hergestellt wird. Statt der zylindrischen Spulenhülse 7 kann auf der Kreuzspulmaschine 6 auch eine konische Spulenhülse 16 angeordnet werden, so daß ein konischer Kreuzwickel 17 entsteht (Fig. 1c).Subsequently, the twisted bundle strand 12 is drawn off from the parallel winding 15 of the flange spool 14, which is optionally converted into a vertical position, via a delivery mechanism 4 from a cheese winder 6 (FIG. 1b). This also has a cylindrical bobbin 7 of large diameter, on which a self-supporting cylindrical cross wrap 8 is produced from the bundle strand 12. Instead of the cylindrical bobbin tube 7, a conical bobbin tube 16 can also be arranged on the cheese winder 6, so that a conical bobbin 17 is formed (FIG. 1c).

Vor der Bürsten-, Besen- oder Pinselmaschine befindet sich die in Figur 2 gezeigte Einrichtung. Sie weist entweder, wie im linken oberen Teil wiedergegeben, mehrere horizontal gelagerte Achsen zur Aufnahme der Spulenhülse 7 bzw. der Kreuzspulwickel 8 in horizontaler Lage oder aber, wie im linken unteren Teil der Figur 3 gezeigt, mehrere vertikale Achsen zur Aufnahme der Spulenhülsen 7 bzw. der Kreuzwickel in vertikaler Lage auf. Hinter den Aufnahmen für die Spulenhülsen 7 ist eine Abzugeinrichtung 9 angeordnet, die die Bündelstränge von den Spulenhülsen 7 abzieht, wobei der Abzug bei horizontaler Lagerung der Spulenhülsen 7 etwa tangential, bei vertikaler Lagerung hingegen achsparallel zum Kreuzwickel 8 erfolgt. Hinter dem Abzugswerk 9 ist eine Schneideinrichtung 10 angeordnet, die den Bündelstrang taktweise auf die gewünschte Borstenlänge abschneidet, so daß die Borstenbündel an der dahinter angeordneten, im übrigen aber bekannten Maschine in den Körper des Arbeitsgerätes, z. B. einer Bürste, eines Pinsels, eines Besens od.dgl. eingesetzt werden können.The device shown in FIG. 2 is located in front of the brush, broom or brush machine. It either has, as shown in the upper left part, several horizontally mounted axes for receiving the bobbin tube 7 or the cheese 8 in a horizontal position, or, as shown in the lower left part of FIG. 3, several vertical axes for receiving the bobbin tubes 7 or the cross wrap in a vertical position. A take-off device 9 is arranged behind the receptacles for the bobbin tubes 7 and pulls off the bundle strands from the bobbin tubes 7, the withdrawal taking place approximately tangentially when the bobbin tubes 7 are stored horizontally, but axially parallel to the cross-winding 8 when stored vertically. Behind the take-off mechanism 9, a cutting device 10 is arranged, which cuts the bundle strand intermittently to the desired bristle length, so that the bristle bundles on the machine behind, but otherwise known, in the body of the implement, for. B. a brush, a brush, a broom or the like. can be used.

Claims (6)

1. Method for making plastics bundles of bristles for brushes, brooms, paintbrushes, etc., in that endless monofilaments are produced and joined in a number wholly or partly corresponding to the number of bristles in the bundle and the resulting bundle strand in wound onto a reel, from which the bundle strand is removed in synchronized manner or continuously during process and cut to bristle length and, before or after this, each bristle bundle is fixed to the brush, broom or paintbrush body, characterized in that the bundle strand formed on joining the monofilaments is twisted and wound in the cross winding process.
2. Method according to claim 1, characterized in that the twisted bundle strand is initially wound in the parallel position, removed from said parallel roll and subsequently wound in the cross winding process.
3. Method according to claims 1 or 2, characterized in that simultaneously several twisted bundle strands are wound onto a reel in the cross winding process.
4. Device for performing the method according to claim 1 comprising one or more extrusion lines for producing endless monofilaments, a mechanism for joining the monofilaments to form a bundle strand and a winding block for winding the bundle strand, characterized by a device (11) for twisting the bundle strand (5) and a cross winding machine (6) having a delivery system (4) for receiving the twisted bundle strand (12) and a flangeless, cylindrical or conical, large diameter reel tube (7 or 16) arranged thereon for receiving the cross rolls (8).
5. Device according to claim 4, characterized in that the cross roll (8, 17) is constructed in self- supporting manner.
6. Device according to claims 4 or 5 for performing the method according to claim 2, characterized in that behind the twisting device (11) is provided a winding block (13) for forming a parallel roll (15) and that its reel (14) can be fitted to the delivery system (4) of the cross winding machine (6).
EP83101053A 1982-02-17 1983-02-04 Method of and device for making plastics bundles of bristles and individual bristles Expired EP0086412B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101053T ATE45473T1 (en) 1982-02-17 1983-02-04 METHOD AND DEVICE FOR THE MANUFACTURE OF PLASTIC BRISTLE BUNDLES AND INDIVIDUAL BRISTLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3205641 1982-02-17
DE3205641A DE3205641C2 (en) 1982-02-17 1982-02-17 Method and device for the production of bristle bundles or individual bristles from plastic

Publications (3)

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EP0086412A2 EP0086412A2 (en) 1983-08-24
EP0086412A3 EP0086412A3 (en) 1986-07-30
EP0086412B1 true EP0086412B1 (en) 1989-08-16

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EP83101053A Expired EP0086412B1 (en) 1982-02-17 1983-02-04 Method of and device for making plastics bundles of bristles and individual bristles

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US (1) US4804232A (en)
EP (1) EP0086412B1 (en)
AT (1) ATE45473T1 (en)
DD (1) DD207854A5 (en)
DE (2) DE3205641C2 (en)
ES (1) ES519833A0 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643202C1 (en) * 1986-12-18 1988-03-24 Schlerf Coronet Werke Process for the production of bristle goods
DE3820372C2 (en) * 1988-06-15 1997-07-24 Coronet Werke Gmbh Method and device for producing bristle goods
IT1239641B (en) * 1990-02-22 1993-11-11 Arce APPARATUS, SUITABLE FOR PREPARING A PREDETERMINED NUMBER OF WIRES, FOR THE CREATION OF BRISTLES FOR ROTARY AND SIMILAR BRUSHES, AND RELATED PROCEDURE
BE1005035A6 (en) * 1991-06-27 1993-03-30 Vlaminck Dirk De Monofilament for the brush, especially the rotary brushes for washing plants automatic vehicle.
US5165761A (en) * 1991-12-30 1992-11-24 The Procter & Gamble Company Method of making improved toothbrush having multi-level tufts with substantially uniformly rounded bristle ends in each tuft
US5224763A (en) * 1991-12-30 1993-07-06 The Procter & Gamble Company Method of fastening bristle tufts to bristle carrier
US5403071A (en) * 1993-11-24 1995-04-04 United Technologies Corporation Method of brush seal tufting
WO1996016571A1 (en) 1994-12-01 1996-06-06 The Procter & Gamble Company Toothbrush having extended bristles
DE19533816A1 (en) * 1995-09-13 1997-03-20 Coronet Werke Gmbh Process for the production of spiral bristles
DE19533815A1 (en) * 1995-09-13 1997-03-20 Coronet Werke Gmbh Toothbrush and process for its manufacture
DE19615098A1 (en) * 1996-04-17 1997-10-23 Coronet Werke Gmbh Brush for gum massage and tooth cleaning and method for producing the bristles of such a brush
DE19616309A1 (en) * 1996-04-24 1997-10-30 Pedex & Co Gmbh Process for the production of bristle material for bristle articles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2035709A (en) * 1932-07-08 1936-03-31 Laub Tooth brush and manufacture thereof
US3408112A (en) * 1965-03-05 1968-10-29 Piotrowski Rafal Process for manufacturing brushes from a bundle of locks of threads and a device for performing this process
US4132449A (en) * 1977-08-26 1979-01-02 Blair Tool & Machine Corporation Method and apparatus for mounting bristles on brush backs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2317401A (en) * 1940-12-13 1943-04-27 Du Pont Continuous filament bristle feeding mechanism
US2576546A (en) * 1948-10-07 1951-11-27 M W Jenkins Sons Inc Method of making brushes
DE845933C (en) * 1949-07-28 1953-06-11 Maximilian Schiffer Method and machine for producing brushes, in particular toothbrushes
DE888684C (en) * 1951-06-05 1953-09-03 Johann Otto Zentgraf Process for the production of artificial bristles with one or more tapered ends from polymers
US3523650A (en) * 1965-05-14 1970-08-11 Owens Corning Fiberglass Corp Roving and method and apparatus for forming and packaging same
BE741084A (en) * 1968-12-19 1970-04-01
DE2626577A1 (en) * 1975-07-18 1977-02-03 Tierhaarzurichterei Veb SYNTHETIC MATERIALS FOR THE MANUFACTURING OF BRUSHES, BRUSHES, ETC.
DE2555944A1 (en) * 1975-12-12 1977-06-16 Kullenbuersten PROCESS AND EQUIPMENT FOR THE MANUFACTURING OF CARRIERS EQUIPPED WITH FIBER TUBES, IN PARTICULAR FOR VEHICLE WASHING SYSTEMS
GB2022197B (en) * 1978-05-31 1982-07-21 Cross Mfg Co Brush seals and methods of manufacutre thereof
DE2849510A1 (en) * 1978-11-15 1980-06-04 Zahoransky Anton Fa Brush with several bristle tufts offset relative to each other - is mfd. by positioning member on machine for correct alignment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2035709A (en) * 1932-07-08 1936-03-31 Laub Tooth brush and manufacture thereof
US3408112A (en) * 1965-03-05 1968-10-29 Piotrowski Rafal Process for manufacturing brushes from a bundle of locks of threads and a device for performing this process
US4132449A (en) * 1977-08-26 1979-01-02 Blair Tool & Machine Corporation Method and apparatus for mounting bristles on brush backs

Also Published As

Publication number Publication date
DE3205641A1 (en) 1983-09-08
US4804232A (en) 1989-02-14
EP0086412A2 (en) 1983-08-24
DE3205641C2 (en) 1991-03-28
ES8401535A1 (en) 1983-12-01
DD207854A5 (en) 1984-03-21
ATE45473T1 (en) 1989-09-15
ES519833A0 (en) 1983-12-01
DE3380397D1 (en) 1989-09-28
EP0086412A3 (en) 1986-07-30

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