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EP0524545B1 - Cylindrical tube - Google Patents

Cylindrical tube Download PDF

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Publication number
EP0524545B1
EP0524545B1 EP92112143A EP92112143A EP0524545B1 EP 0524545 B1 EP0524545 B1 EP 0524545B1 EP 92112143 A EP92112143 A EP 92112143A EP 92112143 A EP92112143 A EP 92112143A EP 0524545 B1 EP0524545 B1 EP 0524545B1
Authority
EP
European Patent Office
Prior art keywords
thread
piece
clamping piece
tube
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92112143A
Other languages
German (de)
French (fr)
Other versions
EP0524545A1 (en
Inventor
Jörg Spahlinger
Michael Teckentrup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0524545A1 publication Critical patent/EP0524545A1/en
Application granted granted Critical
Publication of EP0524545B1 publication Critical patent/EP0524545B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00Securing material to cores or formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18Constructional details
    • B65H75/28Arrangements for positively securing ends of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a cylindrical winding tube according to the preamble of claim 1.
  • This winding tube is known from DE-A-39 23 305 (IP-1650).
  • This winding tube is used to wind up a thread, in particular chemical thread, the thread being caught in "synchronism".
  • the thread catch slot of the known winding tube consists of an insertion piece and a clamping piece.
  • the insert is so wide that the thread easily falls into the bottom of the insert.
  • the clamping piece on the other hand, is very narrow and serves to exert considerable tensile forces on the thread.
  • a thread trap is provided in the known winding tube in the area of the insertion piece, which does not hinder the radial penetration of the thread into the insertion piece, but blocks the radial exit from the clamping piece, preferably locks it in a form-fitting manner.
  • the object of the invention is to improve the thread trap. It is particularly important that very high and very suddenly occurring thread forces act on the thread trap in the case of thick threads or threads of high strength. If the winding tube is wound out of cardboard or layers of paper, there is a risk that in such a case also consist of layers of paper Thread trap is torn apart layer by layer.
  • the locking edge lies in such a way that the thread that has fallen into the opening of the drop-in piece - seen radially - runs below the locking edge. If the thread is now guided along the flank of the thread catch slot facing the axial center of the sleeve, it first falls into the bulge and is then gripped and taken along by the entire thickness of the locking edge. This results in an increasing wrap of the thread on the locking edge with the result that the thread increasingly constricts the paper layers of the winding tube that are exposed on the locking edge, thereby further strengthening the winding tube in this area.
  • the locking edge is essentially axially directed. You can also form an obtuse angle with the catch slot, as long as this angle is in the self-locking range, d. H. as long as there is no danger that the thread slips axially on the locking edge.
  • the locking edge can also form an acute angle with the catch slot. The resulting arrow-shaped projection must not be weakened inadmissibly. If the aspect of simple manufacture is also taken into account, the axially parallel alignment of the locking edge appears to be particularly advantageous.
  • Figures 1 and 2 illustrate the structure and operation of the winding tube according to the invention.
  • the circular cylindrical winding tube 1 has the catch slot 2 at one end, adjacent to its end face.
  • the catch slot extends in the circumferential direction over an angle of z. B. 120 ° or more. If one assumes that both the surface of the sleeve 1 and the thread move in the direction of the arrow 3, the catch slot begins with an insertion piece 4.
  • This insertion piece 4 is characterized in that it has a relatively large width in comparison to the thread diameter .
  • the insert can z. B. extend over 90 ° of the coil circumference.
  • the clamping piece 5 then follows.
  • the clamping piece 5 has a small width relative to the thread diameter. The clamping piece is so narrow that it is suitable to exert considerable tensile forces on the thread.
  • a thread trap 6 lies in the area of the insertion piece 4.
  • the thread is drawn off by thread guide 14 by means of a suction gun (not shown) or a driven, full bobbin (cf. PCT / DE 89/00094).
  • the thread is delivered by a delivery unit 23, not shown, or the chemical thread is freshly spun and comes directly from the spinneret.
  • the winding spindle with the empty tube 1 stretched thereon is driven essentially at a surface speed which corresponds to the thread speed.
  • the The winding spindle has been moved into the thread run in such a way that the direction of the surface movement of the winding tube corresponds to the thread running direction 3.
  • the thread is guided into the normal plane of the catch slot by a thread guide 23 lying in front of the winding tube 1 in the thread running direction. It is drawn off via thread guide 14, which is located somewhat to the side of the normal plane of the thread catch slot, on the side facing the axial center of the winding tube.
  • the thread trap 6 is formed by a bulge 20, which is delimited by a locking edge 19 on the side facing the clamping piece 5.
  • the bulge affects the flank of the insertion piece of the thread catch slot, which faces the axial center of the sleeve.
  • the bulge 20 lies in an area of the sinker in which the sinker extends to the inner circumference of the winding tube (area of an opening).
  • the ends 17 and 18 of this incised area are at such a distance from the blocking edge 19 that the thread dropped into the insert 4 forms a secant of the inner circumference of the winding tube, as shown in FIG. 2C.
  • the axial extent of the bulge 20 is not critical. It can be a few millimeters, in any case sufficient that there is sufficient length for gripping the thread.
  • the locking edge 19 has an axially parallel course in the exemplary embodiment. Under this condition, the bulge 20 is easy to manufacture.
  • the blocking edge 19 can also form an obtuse angle with the flank of the thread catch slot. In this case, the angle must not be chosen so large that the thread which is guided around the blocking edge 19 automatically slips in the direction of the insertion piece. In any case, there must be self-locking for the thread.
  • the locking edge can also form an acute angle with the flank of the insertion piece 4. It would be harmless if the thread in here on the locking edge Direction slips on the wedge gap 21 formed with the bulge 20. However, the arrow-shaped projection, which is formed here by the locking edge, must remain sufficiently strong to exert the forces required to tear the thread.
  • the thread guides 14, 23 on the one hand and the sleeve on the other hand are positioned so that the thread wraps around the sleeve in the normal plane of the catch slot, preferably at more than 90 ° and hardly more than 180 °.
  • FIG. 2A shows the rotational position of the winding tube, in which the front end of the insertion piece 2 of the catch slot has reached the point at which the thread runs onto the winding tube.
  • Fig. 2B shows that as the bobbin tube continues to rotate, the thread falls into the sinker 4.
  • the insertion piece is chosen so large in its axial width that the thread reaches the bottom of the insertion piece without any significant obstacle. It should be particularly mentioned that the insertion piece is essentially as deep as or deeper than the clamping piece of the catch slot to be described below. In its central area, however, the insertion piece is pierced down to the inner circumference of the winding tube 1. The ends of this pierced area 17 and 18 lie on a secant of the inner circumference.
  • the thread thus falls to the bottom of the sinker or forms a secant between the ends 17 and 18 of the pierced area to the inner circumference of the winding tube.
  • the resulting Relative speeds do not have an effect in the form of frictional forces acting on the thread, since the insertion piece 4 is so wide that it does not significantly impede the thread.
  • the resulting thread tension forces and relative speeds are sufficient, however, to pull the thread as deep as possible into the catch slot or the insertion piece and the clamping piece.
  • the function of the thread trap is shown with reference to FIG. 2C. It should be mentioned that the thread with the running direction 3 runs exactly in the normal plane of the catch slot 2, but that the thread center running over the thread guide 14 has a movement component in the direction of the longitudinal center of the winding tube. The deviation is a few degrees. As a result, the thread running out of the drop-in piece 4 in FIG. 2C rests against the flank of the drop-in piece, which faces the axial longitudinal center of the winding tube.
  • the thread comes past the bulge 20 by turning the winding tube further, it also slides into this bulge due to its laterally directed component. Since the bulge also lies in the pierced area of the insertion piece 4, the thread which forms the secant to the inner circumference in this area passes under the blocking edge 19 which delimits the bulge 20. This locking edge opposes the thread coming out of the insertion piece against a form-fitting obstacle. If the locking edge has moved past the tangent between the roller 14 and the winding tube by further rotation of the winding tube, the thread is increasingly deflected at the locking edge. By means of this deflection, the locking edge is pressed together, so that the paper layers from which the sleeve is wound are pressed together and stiffened.
  • the thread is held on the bottom of the groove. Therefore, it cannot be pulled radially out of the subsequent clamping piece.
  • the clamping forces that are exerted on the thread in the clamping piece therefore only have an effect in the circumferential direction and thread running direction, but not in a radial direction transverse to the thread. The clamping forces are therefore only converted into thread tension.
  • the clamping piece 5 is now designed so that very suddenly clamping forces are exerted on the thread. This happens because the clamping piece very suddenly narrows relative to the insertion piece to such an extent that strong frictional engagement or practically positive engagement occurs between the thread and the side walls of the catch slot. It must be taken into account here that multifilament chemical threads are involved which, in comparison with the bobbin tubes wound from cardboard or layers of paper, offer multiple possibilities of attack for a positive connection.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

Die Erfindung betrifft eine zylindrische Spulhülse nach dem Oberbegriff des Anspruchs 1.
Diese Spulhülse ist bekannt durch die DE-A-39 23 305 (IP-1650). Diese Spulhülse dient zum Aufwickeln eines Fadens, insbesondere Chemiefadens, wobei der Faden im "Gleichlauf" gefangen wird. Auf die Beschreibung der DE-A-39 23 305 wird Bezug genommen.
The invention relates to a cylindrical winding tube according to the preamble of claim 1.
This winding tube is known from DE-A-39 23 305 (IP-1650). This winding tube is used to wind up a thread, in particular chemical thread, the thread being caught in "synchronism". Reference is made to the description of DE-A-39 23 305.

Der Fadenfangschlitz der bekannten Spulhülse besteht aus einem Einfallstück und einem Klemmstück. Das Einfallstück ist so breit, daß der Faden ohne weiteres bis in den Grund des Einfallstückes fällt. Das Klemmstück ist dagegen sehr eng und dient zur Ausübung erheblicher Zugkräfte auf den Faden.The thread catch slot of the known winding tube consists of an insertion piece and a clamping piece. The insert is so wide that the thread easily falls into the bottom of the insert. The clamping piece, on the other hand, is very narrow and serves to exert considerable tensile forces on the thread.

Im Bereich des Einfallstückes ist bei der bekannten Spulhülse eine Fadenfalle vorgesehen, die zwar das radiale Eindringen des Fadens in das Einfallstück nicht behindert, das radiale Aussteigen aus dem Klemmstück jedoch sperrt, vorzugsweise formschlüssig sperrt.A thread trap is provided in the known winding tube in the area of the insertion piece, which does not hinder the radial penetration of the thread into the insertion piece, but blocks the radial exit from the clamping piece, preferably locks it in a form-fitting manner.

Aufgabe der Erfindung ist die Verbesserung der Fadenfalle. Dabei geht es insbesondere darum, daß bei dicken Fäden oder Fäden hoher Festigkeit sehr hohe und sehr plötzlich auftretende Fadenkräfte auf die Fadenfalle einwirken. Wenn die Spulhülse aus Pappe oder Papierlagen gewickelt ist, besteht die Gefahr, daß die in einem solchen Fall ebenfalls aus Papierlagen bestehende Fadenfalle Lage für Lage zerfetzt wird.The object of the invention is to improve the thread trap. It is particularly important that very high and very suddenly occurring thread forces act on the thread trap in the case of thick threads or threads of high strength. If the winding tube is wound out of cardboard or layers of paper, there is a risk that in such a case also consist of layers of paper Thread trap is torn apart layer by layer.

Die Lösung ergibt sich aus Anspruch 1.
Eine Hülse mit einer Durchbrechung gemäß dem kennzeichnenden Teil des Anspruchs 1 und mit einem in diese Durchbrechung seitlich hineinragenden Fangglied ist aus der DE-A-38 28 266 bekannt.
Die Besonderheit dieser Lösung besteht darin, daß die Fadenfalle durch eine an der Hülse gebildete Sperrkante gebildet wird, welche die gesamte Hülsendicke umfaßt, so daß der Faden stets an der gesamten Hülsendicke und nicht nur an einzelnen Lagen der Hülse angreift.
The solution results from claim 1.
A sleeve with an opening according to the characterizing part of claim 1 and with a catch member protruding laterally into this opening is known from DE-A-38 28 266.
The peculiarity of this solution is that the thread trap is formed by a locking edge formed on the sleeve, which includes the entire sleeve thickness, so that the thread always acts on the entire sleeve thickness and not only on individual layers of the sleeve.

Die Sperrkante liegt so, daß der in die Durchbrechung des Einfallstücks eingefallene Faden - radial gesehen - unterhalb der Sperrkante verläuft. Wenn der Faden nun an der zur Axialmitte der Hülse hingewandten Flanke des Fadenfangschlitzes entlanggeführt wird, so fällt er zunächst in die Ausbuchtung und wird sodann von der gesamten Dicke der Sperrkante erfaßt und mitgenommen. Dabei entsteht eine zunehmende Umschlingung des Fadens an der Sperrkante mit der Folge, daß der Faden die an der Sperrkante freiliegenden Papierschichten der Spulhülse zunehmend zusammenschnürt und dadurch die Spulhülse in diesem Bereich noch verfestigt.The locking edge lies in such a way that the thread that has fallen into the opening of the drop-in piece - seen radially - runs below the locking edge. If the thread is now guided along the flank of the thread catch slot facing the axial center of the sleeve, it first falls into the bulge and is then gripped and taken along by the entire thickness of the locking edge. This results in an increasing wrap of the thread on the locking edge with the result that the thread increasingly constricts the paper layers of the winding tube that are exposed on the locking edge, thereby further strengthening the winding tube in this area.

Die Sperrkante ist im wesentlichen axial gerichtet. Sie kann mit dem Fangschlitz auch einen stumpfen Winkel bilden, solange dieser Winkel im Selbsthemmungsbereich liegt, d. h. solange nicht die Gefahr besteht, daß der Faden axial an der Sperrkante abrutscht. Die Sperrkante kann mit dem Fangschlitz auch einen spitzen Winkel bilden. Der dadurch entstehende pfeilförmige Vorsprung darf hierdurch jedoch nicht unzulässig geschwächt werden. Wenn weiterhin der Gesichtspunkt einer einfachen Fertigung berücksichtigt wird, erscheint die achsparallele Ausrichtung der Sperrkante als besonders vorteilhaft.The locking edge is essentially axially directed. You can also form an obtuse angle with the catch slot, as long as this angle is in the self-locking range, d. H. as long as there is no danger that the thread slips axially on the locking edge. The locking edge can also form an acute angle with the catch slot. The resulting arrow-shaped projection must not be weakened inadmissibly. If the aspect of simple manufacture is also taken into account, the axially parallel alignment of the locking edge appears to be particularly advantageous.

Im folgenden wird ein Ausführungsbeispiel anhand der Zeichnung beschrieben.An exemplary embodiment is described below with reference to the drawing.

Es zeigen:

Fig. 1A bis 1C
Teilansichten der Spulhülse;
Fig. 2A bis 2F
den Radialschnitt durch die Spulhülse in verschiedenen Drehstellungen.
Show it:
1A to 1C
Partial views of the winding tube;
2A to 2F
the radial section through the winding tube in different rotational positions.

Gezeigt ist eine Abwicklung des linken Endes einer Spulhülse sowie jeweils ein Teilschnitt A-A durch den Fangschlitz. Die Figuren 1 und 2 illustrieren den Aufbau und die Wirkungsweise der erfindungsgemäßen Spulhülse.A development of the left end of a winding tube and a partial section A-A through the catch slot are shown. Figures 1 and 2 illustrate the structure and operation of the winding tube according to the invention.

Die kreiszylindrische Spulhülse 1 weist an einem Ende, benachbart zu ihrer Stirnseite, den Fangschlitz 2 auf. Der Fangschlitz erstreckt sich in Umfangsrichtung über einen Winkel von z. B. 120° oder mehr. Wenn man davon ausgeht, daß sich sowohl die Oberfläche der Hülse 1 als auch der Faden in Pfeilrichtung 3 bewegen, so beginnt der Fangschlitz mit einem Einfallstück 4. Dieses Einfallstück 4 zeichnet sich dadurch aus, daß es eine im Vergleich zum Fadendurchmesser relativ große Weite aufweist. Das Einfallstück kann sich z. B. über 90° des Spulenumfangs erstrecken. Sodann folgt das Klemmstück 5. Das Klemmstück 5 besitzt eine relativ zum Fadendurchmesser geringe Weite. Das Klemmstück ist so eng, daß es geeignet ist, erhebliche Zugkräfte auf den Faden auszuüben.The circular cylindrical winding tube 1 has the catch slot 2 at one end, adjacent to its end face. The catch slot extends in the circumferential direction over an angle of z. B. 120 ° or more. If one assumes that both the surface of the sleeve 1 and the thread move in the direction of the arrow 3, the catch slot begins with an insertion piece 4. This insertion piece 4 is characterized in that it has a relatively large width in comparison to the thread diameter . The insert can z. B. extend over 90 ° of the coil circumference. The clamping piece 5 then follows. The clamping piece 5 has a small width relative to the thread diameter. The clamping piece is so narrow that it is suitable to exert considerable tensile forces on the thread.

Eine Fadenfalle 6 liegt im Bereich des Einfallstücks 4. Der Faden wird durch Fadenführer 14 mittels einer nicht dargestellten Absaugpistole oder einer angetriebenen, vollen Spule (vgl. PCT/DE 89/00094) abgezogen. Der Faden wird von einem nicht dargestellten Lieferwerk 23 angeliefert oder der Chemiefaden ist frisch gesponnen und kommt unmittelbar von der Spinndüse.A thread trap 6 lies in the area of the insertion piece 4. The thread is drawn off by thread guide 14 by means of a suction gun (not shown) or a driven, full bobbin (cf. PCT / DE 89/00094). The thread is delivered by a delivery unit 23, not shown, or the chemical thread is freshly spun and comes directly from the spinneret.

Die Spulspindel mit der darauf aufgespannten Leerhülse 1 wird im wesentlichen mit einer Oberflächengeschwindigkeit angetrieben, die der Fadengeschwindigkeit entspricht. Die Spulspindel ist derart in den Fadenlauf bewegt worden, daß die Richtung der Oberflächenbewegung der Spulhülse der Fadenlaufrichtung 3 entspricht. Der Faden wird durch einen in Fadenlaufrichtung vor der Spulhülse 1 liegenden Fadenführer 23 in die Normalebene des Fangschlitzes geführt. Er wird über Fadenführer 14 abgezogen, der etwas seitlich von der Normalebene des Fadenfangschlitzes, und zwar auf der der axialen Mitte der Spulhülse zugewandten Seite liegt. Die Fadenfalle 6 wird gebildet durch eine Ausbuchtung 20, die auf der dem Klemmstück 5 zugewandten Seite durch eine Sperrkante 19 begrenzt ist. Die Ausbuchtung betrifft die Flanke des Einfallstückes des Fadenfangschlitzes, welche der axialen Hülsenmitte zugewandt ist. Die Ausbuchtung 20 liegt in einem Bereich des Einfallstückes, in welchem das Einfallstück bis auf den Innenumfang der Spulhülse reicht (Bereich einer Durchbrechung). Die Enden 17 und 18 dieses eingeschnittenen Bereiches haben einen solchen Abstand von der Sperrkante 19, daß der in das Einfallstück 4 eingefallene Faden eine Sekante des Innenumfangs der Spulhülse bildet, wie dies in Fig. 2C gezeigt ist. Die axiale Erstreckung der Ausbuchtung 20 ist unkritisch. Sie kann einige Millimeter betragen, ausreichend jedenfalls, daß sich eine zum Ergreifen des Fadens ausreichende Länge ergibt. Die Sperrkante 19 hat in dem Ausführungsbeispiel achsparallelen Verlauf. Unter dieser Voraussetzung ist die Ausbuchtung 20 einfach herstellbar.The winding spindle with the empty tube 1 stretched thereon is driven essentially at a surface speed which corresponds to the thread speed. The The winding spindle has been moved into the thread run in such a way that the direction of the surface movement of the winding tube corresponds to the thread running direction 3. The thread is guided into the normal plane of the catch slot by a thread guide 23 lying in front of the winding tube 1 in the thread running direction. It is drawn off via thread guide 14, which is located somewhat to the side of the normal plane of the thread catch slot, on the side facing the axial center of the winding tube. The thread trap 6 is formed by a bulge 20, which is delimited by a locking edge 19 on the side facing the clamping piece 5. The bulge affects the flank of the insertion piece of the thread catch slot, which faces the axial center of the sleeve. The bulge 20 lies in an area of the sinker in which the sinker extends to the inner circumference of the winding tube (area of an opening). The ends 17 and 18 of this incised area are at such a distance from the blocking edge 19 that the thread dropped into the insert 4 forms a secant of the inner circumference of the winding tube, as shown in FIG. 2C. The axial extent of the bulge 20 is not critical. It can be a few millimeters, in any case sufficient that there is sufficient length for gripping the thread. The locking edge 19 has an axially parallel course in the exemplary embodiment. Under this condition, the bulge 20 is easy to manufacture.

Wie Fig. 1B zeigt, kann die Sperrkante 19 mit der Flanke des Fadenfangschlitzes auch einen stumpfen Winkel bilden. Der Winkel darf in diesem Falle nicht so groß gewählt werden, daß der um die Sperrkante 19 herumgeführte Faden von selbst in Richtung auf das Einfallstück abrutscht. Es muß also für den Faden jedenfalls Selbsthemmung bestehen.As shown in FIG. 1B, the blocking edge 19 can also form an obtuse angle with the flank of the thread catch slot. In this case, the angle must not be chosen so large that the thread which is guided around the blocking edge 19 automatically slips in the direction of the insertion piece. In any case, there must be self-locking for the thread.

Wie Fig. 1C zeigt, kann die Sperrkante auch einen spitzen Winkel mit der Flanke des Einfallstückes 4 bilden. Dabei wäre es unschädlich, wenn der Faden hier an der Sperrkante in Richtung auf den mit der Ausbuchtung 20 gebildeten Keilspalt 21 abrutscht. Jedoch muß der pfeilförmige Vorsprung, der hier durch die Sperrkante gebildet wird, ausreichend stark bleiben, um die zum Zerreißen des Fadens erforderlichen Kräfte aufzubringen.As shown in FIG. 1C, the locking edge can also form an acute angle with the flank of the insertion piece 4. It would be harmless if the thread in here on the locking edge Direction slips on the wedge gap 21 formed with the bulge 20. However, the arrow-shaped projection, which is formed here by the locking edge, must remain sufficiently strong to exert the forces required to tear the thread.

Zur Wirkungsweise:
Zum Fangen des Fadens an der Hülse sind die Fadenführer 14, 23 einerseits und die Hülse andererseits so positioniert, daß der Faden die Hülse in der Normalebene des Fangschlitzes umschlingt, vorzugsweise mit mehr als 90° und kaum mehr als 180°.
How it works:
To catch the thread on the sleeve, the thread guides 14, 23 on the one hand and the sleeve on the other hand are positioned so that the thread wraps around the sleeve in the normal plane of the catch slot, preferably at more than 90 ° and hardly more than 180 °.

In Fig. 2A ist die Drehstellung der Spulhülse gezeigt, in der das vordere Ende des Einfallstückes 2 des Fangschlitzes an dem Punkt angelangt ist, an welchem der Faden auf die Spulhülse aufläuft.2A shows the rotational position of the winding tube, in which the front end of the insertion piece 2 of the catch slot has reached the point at which the thread runs onto the winding tube.

Fig. 2B zeigt, daß bei der Weiterdrehung der Spulhülse der Faden in das Einfallstück 4 einfällt. Hierzu ist das Einfallstück in seiner axialen Breite so groß gewählt, daß der Faden ohne wesentliches Hemmnis auf den Grund des Einfallstücks gelangt. Es sei dabei besonders erwähnt, daß das Einfallstück im wesentlichen genauso tief wie oder tiefer ist als das nachfolgend zu beschreibende Klemmstück des Fangschlitzes. In seinem mittleren Bereich jedoch ist das Einfallstück bis auf den Innenumfang der Spulhülse 1 durchgestoßen. Die Enden dieses durchstoßenen Bereiches 17 und 18 liegen auf einer Sekante des Innenumfangs.Fig. 2B shows that as the bobbin tube continues to rotate, the thread falls into the sinker 4. For this purpose, the insertion piece is chosen so large in its axial width that the thread reaches the bottom of the insertion piece without any significant obstacle. It should be particularly mentioned that the insertion piece is essentially as deep as or deeper than the clamping piece of the catch slot to be described below. In its central area, however, the insertion piece is pierced down to the inner circumference of the winding tube 1. The ends of this pierced area 17 and 18 lie on a secant of the inner circumference.

Der Faden fällt also bis auf den Grund des Einfallstückes bzw. bildet zwischen den Enden 17 und 18 des durchstoßenen Bereiches eine Sekante zum Innenumfang der Spulhülse. Dadurch ergibt sich, daß die Fadenlaufgeschwindigkeit geringfügig - Größenordnung: 1 % - größer ist als die translatorische Geschwindigkeit des Fangschlitzes bzw. der Hülse. Die dadurch entstehenden Relativgeschwindigkeiten wirken sich allerdings nicht in Form von auf den Faden einwirkenden Reibkräften aus, da das Einfallstück 4 so breit ist, daß es den Faden nicht wesentlich behindert. Die entstehenden Fadenzugkräfte und Relativgeschwindigkeiten reichen jedoch aus, den Faden möglichst tief in den Fangschlitz bzw. das Einfallstück und das Klemmstück hineinzuziehen.The thread thus falls to the bottom of the sinker or forms a secant between the ends 17 and 18 of the pierced area to the inner circumference of the winding tube. This means that the thread speed is slightly - in the order of 1% - greater than the translational speed of the catch slot or the sleeve. The resulting Relative speeds, however, do not have an effect in the form of frictional forces acting on the thread, since the insertion piece 4 is so wide that it does not significantly impede the thread. The resulting thread tension forces and relative speeds are sufficient, however, to pull the thread as deep as possible into the catch slot or the insertion piece and the clamping piece.

Anhand von Fig. 2C ist die Funktion der Fadenfalle gezeigt. Dabei ist zu erwähnen, daß der Faden mit Laufrichtung 3 zwar genau in der Normalebene des Fangschlitzes 2 zuläuft, daß aber der über den Fadenführer 14 ablaufende Fadentrum eine Bewegungskomponente in Richtung der Längsmitte der Spulhülse hat. Die Abweichung beträgt wenige Grad. Dadurch liegt der in Fig.2C aus dem Einfallstück 4 wieder herauslaufende Faden an der Flanke des Einfallstückes an, welche der axialen Längsmitte der Spulhülse zugewandt ist.The function of the thread trap is shown with reference to FIG. 2C. It should be mentioned that the thread with the running direction 3 runs exactly in the normal plane of the catch slot 2, but that the thread center running over the thread guide 14 has a movement component in the direction of the longitudinal center of the winding tube. The deviation is a few degrees. As a result, the thread running out of the drop-in piece 4 in FIG. 2C rests against the flank of the drop-in piece, which faces the axial longitudinal center of the winding tube.

Wenn nun durch Weiterdrehen der Spulhülse der Faden an der Ausbuchtung 20 vorbeikommt, so gleitet er infolge seiner seitlich gerichteten Komponente auch in diese Ausbuchtung hinein. Da die Ausbuchtung ferner im durchstoßenen Bereich des Einfallstückes 4 liegt, gelangt der Faden, der in diesem Bereich die Sekante zum Innenumfang bildet, unter die Sperrkante 19, die die Ausbuchtung 20 begrenzt. Diese Sperrkante setzt dem Aussteigen des Fadens aus dem Einfallstück ein formschlüssiges Hemmnis entgegen. Wenn durch Weiterdrehung der Spulhülse die Sperrkante an der Tangente zwischen der Rolle 14 und der Spulhülse vorbeigefahren ist, so wird der Faden an der Sperrkante zunehmend umgelenkt. Durch diese Umlenkung wird die Sperrkante zusammengepreßt, so daß die Papierlagen, aus denen die Hülse gewickelt ist, zusammengedrückt und versteift werden. Ferner wird der Faden auf dem Nutengrund festgehalten. Er kann daher auch nicht aus dem nachfolgenden Klemmstück radial herausgezogen werden. Die Klemmkräfte, die in dem Klemmstück auf den Faden ausgeübt werden, wirken sich daher nur in Umfangsrichtung und Fadenlaufrichtung, jedoch nicht in einer radialen Richtung quer zum Faden aus. Die Klemmkräfte werden daher ausschließlich in Fadenzugkräfte umgesetzt.If the thread comes past the bulge 20 by turning the winding tube further, it also slides into this bulge due to its laterally directed component. Since the bulge also lies in the pierced area of the insertion piece 4, the thread which forms the secant to the inner circumference in this area passes under the blocking edge 19 which delimits the bulge 20. This locking edge opposes the thread coming out of the insertion piece against a form-fitting obstacle. If the locking edge has moved past the tangent between the roller 14 and the winding tube by further rotation of the winding tube, the thread is increasingly deflected at the locking edge. By means of this deflection, the locking edge is pressed together, so that the paper layers from which the sleeve is wound are pressed together and stiffened. Furthermore, the thread is held on the bottom of the groove. Therefore, it cannot be pulled radially out of the subsequent clamping piece. The clamping forces that are exerted on the thread in the clamping piece therefore only have an effect in the circumferential direction and thread running direction, but not in a radial direction transverse to the thread. The clamping forces are therefore only converted into thread tension.

Das Klemmstück 5 ist nun so gestaltet, daß sehr plötzlich Klemmkräfte auf den Faden ausgeübt werden. Dies geschieht dadurch, daß sich das Klemmstück relativ zum Einfallstück sehr plötzlich so weit verengt, daß zwischen Faden und den Seitenwandungen des Fangschlitzes starker Reibschluß oder praktisch Formschluß eintritt. Hierbei ist zu berücksichtigen, daß es sich um multifile Chemiefäden handelt, die gegenüber den aus Pappe oder Papierlagen gewickelten Spulhülsen vielfache Angriffsmöglichkeiten für einen Formschluß bieten.The clamping piece 5 is now designed so that very suddenly clamping forces are exerted on the thread. This happens because the clamping piece very suddenly narrows relative to the insertion piece to such an extent that strong frictional engagement or practically positive engagement occurs between the thread and the side walls of the catch slot. It must be taken into account here that multifilament chemical threads are involved which, in comparison with the bobbin tubes wound from cardboard or layers of paper, offer multiple possibilities of attack for a positive connection.

In Fig. 2E ist eine Drehstellung gezeigt, in der sich erstmalig an der Sperrkante 19 der Fadenfalle 6 eine Umlenkung des Fadens ergibt.2E shows a rotational position in which there is for the first time a deflection of the thread on the blocking edge 19 of the thread trap 6.

In Fig. 2F ist eine Drehstellung gezeigt, in der sich eine maximale Umlenkung des Fadens an der Sperrkante 19 der Fadenfalle 6 ergibt. Es ist davon auszugehen, daß in dieser Stellung der Faden reißt, wenn es sich um einen nicht zu starken Faden handelt. Die Klemmkräfte des Klemmstückes 5 bleiben jedoch weiterhin wirksam und der Faden wird weiterhin in Laufrichtung 3 gefördert. Die Fadenzugkräfte nehmen daher weiterhin erheblich zu. Der Fadenbruch kann durch eine entsprechend scharfe Ausgestaltung des Fadenführers 4 gefördert werden. Nunmehr wird der Faden auf der Spulhülse 1 aufgewikkelt. Wie in den zitierten, vorerwähnten Patentanmeldungen beschrieben, kann nunmehr die Changierung wieder eingesetzt und der Faden zu einer Kreuzspule auf der Spulhülse 1 verlegt werden.2F shows a rotational position in which there is a maximum deflection of the thread at the blocking edge 19 of the thread trap 6. It can be assumed that the thread breaks in this position if the thread is not too strong. However, the clamping forces of the clamping piece 5 remain effective and the thread continues to be conveyed in the running direction 3. The thread tension therefore continues to increase significantly. The thread break can be promoted by a correspondingly sharp design of the thread guide 4. Now the thread is wound on the winding tube 1. As described in the above-mentioned patent applications, the traversing can now be used again and the thread can be laid on the bobbin tube 1 to form a package.

Claims (1)

  1. Cylindrical bobbin tube
       made of cardboard or plastics material or wound layers of paper,
       onto which a synthetic thread is spooled to form a cross spool,
       wherein the bobbin tube has, in a normal plane, a thread-catching slot (2) which extends over at least part of the periphery and consists of a drop-in piece (4) and a clamping piece (5),
       wherein the drop-in piece (4) is located in front - in the direction of running of the tube - and is of a width such that it does not substantially obstruct the radial penetration, which occurs in the direction of penetration, of the thread into the catching slot (2),
       wherein the clamping piece (5) clamps the thread in such a way that the latter is conveyed with a tensile force,
       and wherein, for the purpose of catching the thread when the thread and the surface region of the bobbin tube which is touched by the thread are moved in the same direction, a thread trap (6) is disposed in the catching slot before the start of the clamping piece and is so designed that the thread trap does not obstruct the radial penetration of the thread into the thread slot, but does block the radial jumping of the thread out of the clamping piece of the catching slot,
       characterized in that
       as a thread trap (6), the drop-in piece (4) has an opening which is located before the clamping piece (5) and in which the drop-in piece (4) reaches as far as the inner periphery of the tube;
       that the opening is of a length such that the ends of the opening are located on a secant of the inner periphery;
       that an indentation (20) which points towards the axial centre of the tube is provided in the region of the opening;
       that the indentation (20) is bordered, on its side which faces towards the clamping piece (5), by a locking edge (19) which is located radially outside the secant of the inner periphery and which is inclined, in relation to the normal plane of the thread-catching slot (2), in such a way that the force-locking or form-locking entrainment of the thread on the locking edge (19) is guaranteed when the thread is guided on that flank of the catching slot (2) which points towards the axial centre of the tube.
EP92112143A 1991-07-20 1992-07-16 Cylindrical tube Expired - Lifetime EP0524545B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124128 1991-07-20
DE4124128 1991-07-20

Publications (2)

Publication Number Publication Date
EP0524545A1 EP0524545A1 (en) 1993-01-27
EP0524545B1 true EP0524545B1 (en) 1995-02-08

Family

ID=6436644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112143A Expired - Lifetime EP0524545B1 (en) 1991-07-20 1992-07-16 Cylindrical tube

Country Status (8)

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US (1) US5248111A (en)
EP (1) EP0524545B1 (en)
JP (1) JPH05208786A (en)
KR (1) KR950002521B1 (en)
CN (1) CN1032639C (en)
DE (1) DE59201353D1 (en)
RU (1) RU2053185C1 (en)
TW (1) TW202414B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5699658A (en) * 1995-06-01 1997-12-23 W. Schlafhorst Ag & Co. Pot spinning machine
DE19523937B4 (en) * 1995-06-30 2004-02-19 Saurer Gmbh & Co. Kg Process and device for pot spinning

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5791574A (en) * 1996-03-18 1998-08-11 Solutia, Inc. Yarn bobbin with improved snagger
DE19746947A1 (en) * 1996-11-13 1998-07-02 Barmag Barmer Maschf Bobbin sleeve
DK0900759T3 (en) * 1997-09-08 2000-12-11 Sonoco Ipd Gmbh Yarn carrier
DE19962033B4 (en) * 1999-12-22 2008-10-02 Hülsenfabrik Herbster GmbH & Co.KG bobbin
ES2224981T3 (en) * 2000-09-06 2005-03-16 Nan Ya Plastics Corporation COIL WITH A CUTTED SLOT IN THE FORM OF V THAT IS GRADUALLY TIGHTENED, WITH A ROUGH SURFACE THAT INCLUDES INVESTED SCALES.
KR100381787B1 (en) 2000-12-27 2003-04-26 삼성전자주식회사 Displaying Apparatus
ITVI20010090A1 (en) * 2001-04-27 2002-10-27 Riviera Berica Srl SUPPORT TUBE FOR WINDING OF YARNS IN THE REEL
US20050017121A1 (en) * 2003-07-24 2005-01-27 Sonoco Development, Inc. Yarn core
US7240875B2 (en) * 2003-10-14 2007-07-10 Sonoco Development, Inc. Yarn carrier
US20090173814A1 (en) * 2008-01-03 2009-07-09 Hernandez Ismael A Yarn carrier
DE102009033099A1 (en) * 2009-07-15 2011-02-03 Oerlikon Textile Gmbh & Co. Kg spool holder
JP5802708B2 (en) 2013-07-02 2015-10-28 株式会社フジクラ Optical fiber terminal fixture for winding optical fiber and optical fiber winding method
CN103552887B (en) * 2013-09-18 2016-05-11 靖江市富阳包装有限公司 A kind of ultrahigh speed synthesising fibre pipe
CN117585535A (en) * 2019-04-17 2024-02-23 欧瑞康纺织有限及两合公司 Bobbin case

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103305A (en) * 1961-10-30 1963-09-10 Du Pont Slotted textile core
DE2644882A1 (en) * 1976-10-01 1978-04-06 Amann & Soehne SPOOL OF THREAD
DE3711893A1 (en) * 1987-04-08 1988-10-27 Barmag Barmer Maschf METHOD FOR APPLYING A THREAD DELIVERED AT A CONSTANT SPEED TO A BOBBIN
CS265841B1 (en) * 1987-09-01 1989-11-14 Kubata Milan Cylindrical body especially core
DE3805347A1 (en) * 1988-02-20 1989-08-31 Barmag Barmer Maschf REWINDING MACHINE
DE3923305C2 (en) * 1988-07-25 1997-06-12 Barmag Barmer Maschf Cylindrical bobbin
IT219768Z2 (en) * 1989-10-25 1993-05-04 CARDBOARD COIL PERE THE WINDING OF YARNS, WITH SPECIAL CUT FOR THE HOOKING OF THE THREAD.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5699658A (en) * 1995-06-01 1997-12-23 W. Schlafhorst Ag & Co. Pot spinning machine
DE19523937B4 (en) * 1995-06-30 2004-02-19 Saurer Gmbh & Co. Kg Process and device for pot spinning

Also Published As

Publication number Publication date
DE59201353D1 (en) 1995-03-23
KR950002521B1 (en) 1995-03-21
CN1032639C (en) 1996-08-28
TW202414B (en) 1993-03-21
EP0524545A1 (en) 1993-01-27
CN1073150A (en) 1993-06-16
RU2053185C1 (en) 1996-01-27
US5248111A (en) 1993-09-28
JPH05208786A (en) 1993-08-20

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