EP2267201A1 - Upper apron holder for stretching units of spinning machines - Google Patents

Upper apron holder for stretching units of spinning machines Download PDF

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Publication number
EP2267201A1
EP2267201A1 EP10004321A EP10004321A EP2267201A1 EP 2267201 A1 EP2267201 A1 EP 2267201A1 EP 10004321 A EP10004321 A EP 10004321A EP 10004321 A EP10004321 A EP 10004321A EP 2267201 A1 EP2267201 A1 EP 2267201A1
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EP
European Patent Office
Prior art keywords
guide
upper apron
apron
holder
riemchenführer
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.)
Granted
Application number
EP10004321A
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German (de)
French (fr)
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EP2267201B1 (en
Inventor
Joachim Diedrich
Sven Wolf
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Oerlikon Textile Components GmbH
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Publication date
Application filed by Oerlikon Textile Components GmbH filed Critical Oerlikon Textile Components GmbH
Priority to PL10004321T priority Critical patent/PL2267201T3/en
Publication of EP2267201A1 publication Critical patent/EP2267201A1/en
Application granted granted Critical
Publication of EP2267201B1 publication Critical patent/EP2267201B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements

Definitions

  • the present invention relates to a Oberriemchenhalter for drafting of spinning machinery with at least one acted upon by a spring force, a Oberriemchen exciting and deflecting at a deflecting Riemchen interview, which is held on a central portion of the upper apron holder.
  • the deflecting edge of the apron guide is pulled upwards, while the deflecting edge is deflected downwards when the upper apron is stationary.
  • the amount of deflection of the lower edge of the Riemchen technically opposite the Unterriemchen Kunststoff or the Unterriemchens is a process parameter that affects the outcome of the subsequent spinning process sustainable, so that the knowledge of the amount of deflection is of great importance.
  • the deflection edge should be positioned so that the upper apron and the lower apron run parallel to each other, varies in height, which is difficult or impossible to determine during operation.
  • Object of the present invention is therefore to provide a Oberriemchenhalter, which is characterized by a small variation of the deflection of the deflecting edge in particular when changing the operating state of Oberriemchens.
  • the guide elements serving the guidance of the Riemchen concernss compared to the arrangement according to the prior art, according to which they within the track width and are arranged below the Riemchen concernss, can be made longer.
  • the guide length over the known from the prior art Oberriemchenhalter can be significantly extended, whereby the degree of up and down movement of the deflection is reduced to the known in its size function-related game of the guide serving guide element.
  • the at least one guide element may be formed on the middle piece as a guide groove, while the at least one guide element may be formed on the strap guide as a guide rail.
  • the guide groove or the guide rail can be designed continuously.
  • the guide element formed as at least one guide groove may have an interruption.
  • the guide element formed as at least one guide rail may have an interruption.
  • the extension of the interruption provided in the horizontal plane of the guide rail and / or the guide groove is selected such that the uninterrupted sections of guide groove and guide rail overlap at least partially.
  • the arrangement of an interruption at the at least one guide groove and / or on the at least one guide rail should be chosen so that all sections of an interrupted guide rail, regardless of the position of the Riemchen consult opposite the center, always with their corresponding portions of the broken guide at least partially are engaged to safely avoid tilting of the deflecting edge due to a change in the operating state.
  • the guide groove within its horizontal plane over the longitudinal extent of the Riemchen concernss out, but limited by the available space, extend. This favors the described effect of reducing the degree of up and down movement of the deflection still.
  • the guide groove can extend to the deflection edge of the strap guide.
  • the protrusion of the Riemchen concernss can be reduced beyond the guide.
  • the guide groove on the side facing away from the deflection edge of the Riemchen concernss extends beyond this, in order to reduce the protrusion.
  • the Riemchentician can be executed on both sides with a guide rail and the middle piece with corresponding guide grooves.
  • This embodiment has the advantage that the Riemchentician can be made identical on both sides, which has an advantageous effect on the manufacturing costs of preferably designed as an injection molded part and the assembly of Oberriemchenhalters.
  • the length of the two guide grooves may be different.
  • This embodiment of the centerpiece simplifies the assembly and disassembly of the upper apron.
  • the shorter of the two guide grooves should be arranged on the outer edge of the middle piece in order to be able to apply and pull off the upper apron more easily.
  • FIG. 1 shows a Oberriemchenhalter 1, which consists of a middle piece 2 and two Riemchen professionn 3.
  • the middle piece 2 is placed on an axis 5 of a double top roller 6.
  • the double top roller 6 is held in a known manner on a handlebar of a top roller support and loading arm.
  • the Riemchen encourage 3 are assigned to the two rotatably mounted upper rollers 6.
  • An Oberriemchen not shown wraps around the upper roller 6 and the Riemchen tradition 3.
  • the Oberriemchen is guided over the Riemchen interviewed 3 and deflected at a deflection edge 16.
  • the track width of the Riemchen concernss 3 is bounded by arranged perpendicular to the direction of movement of Oberriemchens walls 4 on the Riemchen consult 3, as shown in Fig. 1 to 3 it can be seen, whereby slipping of the Oberriemchens can be prevented by the Riemchen flourish 3.
  • the Riemchen encourage 3 is acted upon by a spring force which is generated by a arranged between the middle piece 2 and the respective Riemchen flourish 3 spring 7.
  • the spring 7 is as in Fig. 3 is shown, in each intermeshing round channels 8, 9 of the center piece 2 and the Riemchen wishess 3 arranged to protect the spring 7 against fiber fly.
  • guide elements are formed on the center piece 2 outside the track width of the upper apron.
  • the guide elements are formed in the illustrated embodiment as outside the raceway width of the upper apron arranged guide grooves 11 and guide rails 12.
  • the guide grooves 11 serve to receive the corresponding guide rails 12 integrally formed on the strap guide 3.
  • pins 13 are arranged on the strap guide 3 within the raceway width and have latching lugs 14 at their free ends.
  • the pins 13 engage in corresponding, also located within the career width of Oberriemchens channels 15 a.
  • the latching lugs 14 of the Riemchen wishess 3 engage behind in its mounted on the central part 2 position recesses in the channels 15. In this way it is prevented that the Riemchen mecanic 3 can be detached from the central part 2 of the upper apron holder 1 when the upper apron is removed.
  • the inventive arrangement of the guide grooves 11 and the corresponding guide rails 12 outside the raceway width of Oberriemchens the guide grooves 11 and the corresponding guide rails 12 can be made longer than the channels 15 and the pins 13 within the track width of the upper belt according to the prior art. Further, as extends Fig. 3 it can be seen, the front end of the guide rails 12 to the immediate vicinity of the deflection edge 16 of the Riemchen concernss 3, so that the projection of the Riemchen practic 3 is reduced over the guide rail 11 addition. By these measures, the extent of the possible up and down movement of the deflecting edge 16 of the Riemchen wishess 3 is only in the order of the function-related play of the guide elements.
  • the guide grooves 11 of the middle piece 2 can be extended depending on the available space on the deflecting edge 16 and beyond the deflecting edge 16 side facing away.
  • Fig. 4 is a plan view of a modified embodiment of a Oberriemchenhalters 1 'and in Fig. 5 a plan view of a Riemchen foster according to the second embodiment according to Fig. 4 shown.
  • the guide elements in the form of the guide grooves 11 'on the middle piece 2' and the guide rails 12 'on the deflecting edge 16 of the Riemchen practicess 3' side facing away extended, as shown in 4 and 5 is apparent.
  • the advantage is that, with optimal utilization of the available rear space of the upper apron holder 1 ', by the extension of the guide elements 11', 12 'over the width of the middle piece 2' addition, the tendency to tilt of the Riemchen workss 3 'in a change of operating state the existing clearance between the guide elements 11 ', 12' can also be reduced.
  • the illustrated here interrupted embodiment of the guide rail 12 "leads in the guide groove 11 to a two-point support and represents a minor modification, but the ensures the same stability as the variant of Riemchen consult 3, 3 'with a continuous guide rail 12 and 12' according to the Fig. 1 to 5 ,
  • the guide groove and / or the guide rail could be provided with at least one interruption or recess 10.
  • the interruption of the guide groove may be a material recess which does not obstruct the sliding displaceability of the continuous guide rail 12, 12 'as well as a guide rail 12 "interrupted by a recess 10 in the horizontal plane of the interrupted guide groove.
  • FIG. 7 which shows a fourth embodiment of a top apron holder 1 "according to FIG Fig. 1 shows, the middle piece 2 'guide grooves 11', which are interrupted in sections by extending in the horizontal plane recesses 18.
  • the continuous guide rails 12 of the Riemchen wishess 3 are in this variant also only at two points on the uninterrupted sections of the guide groove 11 '.
  • both the guide rail and the guide groove have interruptions in the form of recesses.
  • Prerequisite for the stabilization of the Riemchen Kunststoff according to the third or fourth embodiment or a combination of Riemchen dealing and middle piece of both embodiments during operation and a change of operating state is that the guide elements are always in contact with each other such that a tilting of the Riemchen workss to the horizontal plane is avoided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Buckles (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Abstract

The holder (1) has an upper apron stretched by elastic force, and a strappy guide (3) turned on a bending edge (16) and clamped on an intermediate section (2). A guidance plate (12) is arranged on the intermediate section as a guidance groove (11) that is carried out continuously, where the plate is arranged on the strappy guide on an outer side of a track width of the upper apron, and guides a pair of guide parts of the strappy guide. A short side of the guidance groove is arranged on an outer edge of the intermediate section.

Description

Die vorliegende Erfindung betrifft einen Oberriemchenhalter für Streckwerke von Spinnereimaschinen mit mindestens einem mit einer Federkraft beaufschlagten, ein Oberriemchen spannenden und an einer Umlenkkante umlenkenden Riemchenführer, der an einem Mittelstück des Oberriemchenhalters gehalten ist.The present invention relates to a Oberriemchenhalter for drafting of spinning machinery with at least one acted upon by a spring force, a Oberriemchen exciting and deflecting at a deflecting Riemchenführer, which is held on a central portion of the upper apron holder.

Aus der deutschen Gebrauchsmusterschrift DE 92 14 598 U1 ist ein Oberriemchenhalter gemäß dem Oberbegriff des Anspruches 1 der vorliegenden Anmeldung bekannt, der einen ein Oberriemchen spannenden und umlenkenden Riemchenführer aufweist, der an einem Mittelstück des Oberriemchenhalters gehalten ist. Der Riemchenführer ist mit einer Federkraft beaufschlagt, um das Oberriemchen unter einer definierten Spannung zu halten. Zur Führung des Riemchenführers ist dieser mit angeformten Zapfen versehen, die jeweils in an dem Mittelstück angeformten korrespondierenden Kanälen geführt sind. Die Zapfen und die Kanäle sind gemäß der DE 92 14 598 U1 innerhalb der Laufbahnbreite des Oberriemchens an dem Riemchenhalter beziehungsweise an dem Mittelstück angeordnet. Die Tiefe der Kanäle im Mittelstück beschränkt sich dabei auf die Breite des Mittelstückes an dieser Stelle.From the German Utility Model DE 92 14 598 U1 a Oberriemchenhalter according to the preamble of claim 1 of the present application is known, which has a Oberriemchen exciting and deflecting Riemchenführer, which is held on a center piece of Obermiemchenhalters. The strap guide is subjected to a spring force to keep the upper strap under a defined tension. To guide the Riemchenführer this is provided with molded pins, which are each guided in integrally formed on the center of corresponding channels. The pins and the channels are according to the DE 92 14 598 U1 disposed within the raceway width of the top apron on the strap holder or at the middle piece. The depth of the channels in the centerpiece is limited to the width of the middle piece at this point.

Als nachteilig an dem aus dem Stand der Technik bekannten Oberriemchenhalter hat es sich gezeigt, dass das Maß der Auf- und Abbewegung der Umlenkkante zur Horizontalen an dem Riemchenführer größer ist, als das fertigungstechnisch bedingte Spiel zwischen den der Führung dienenden Zapfen und Kanälen. Hierfür ursächlich ist die auskragende Anordnung des Riemchenführers gegenüber den Kanälen an dem Mittelstück des Oberriemchenhalters. Eine Höhenänderung der Umlenkkante tritt stets dann auf, wenn das durch den Riemchenführer gespannte Oberriemchen in Bewegung gesetzt wird, und umgekehrt, wenn das Oberriemchen angehalten wird. Die im Oberriemchen auftretenden Zugkräfte sind in Abhängigkeit vom Betriebszustand unterschiedlich gerichtet. Dies führt dazu, dass während des Betriebes des Oberriemchens die Umlenkkante des Riemchenführers nach oben gezogen wird, während die Umlenkkante im Stillstand des Oberriemchens nach unten ausgelenkt wird. Die Höhe der Auslenkung der Unterkante des Riemchenführers gegenüber der Unterriemchenbrücke beziehungsweise des Unterriemchens ist jedoch ein Prozessparameter, der das Resultat des nachfolgenden Spinnprozesses nachhaltig beeinflusst, so dass die Kenntnis der Höhe der Auslenkung von großer Bedeutung ist. Die Umlenkkante sollte so positioniert sein, dass das Oberriemchen und das Unterriemchen parallel zueinander laufen, variiert in ihrer Höhe, welche während des Betriebes nur schwer oder gar nicht bestimmbar ist.As a disadvantage of the known from the prior art Oberriemchenhalter, it has been shown that the degree of up and down movement of the deflection to the horizontal on the Riemchenführer is greater than the production-related game between the guide pin and channels. This is caused by the cantilevered arrangement of the Riemchenführer opposite the channels at the center of the upper apron holder. A change in height of the deflection edge always occurs when the upper apron stretched by the apron leader is set in motion, and vice versa, when the upper apron is stopped. The tensile forces occurring in Oberriemchen are directed differently depending on the operating condition. As a result, during the operation of the upper apron, the deflecting edge of the apron guide is pulled upwards, while the deflecting edge is deflected downwards when the upper apron is stationary. However, the amount of deflection of the lower edge of the Riemchenführer opposite the Unterriemchenbrücke or the Unterriemchens is a process parameter that affects the outcome of the subsequent spinning process sustainable, so that the knowledge of the amount of deflection is of great importance. The deflection edge should be positioned so that the upper apron and the lower apron run parallel to each other, varies in height, which is difficult or impossible to determine during operation.

Aufgabe der vorliegenden Erfindung ist es daher, einen Oberriemchenhalter bereitzustellen, welcher sich durch eine geringe Variation der Auslenkung der Umlenkkante insbesondere bei einem Wechsel des Betriebszustandes des Oberriemchens auszeichnet.Object of the present invention is therefore to provide a Oberriemchenhalter, which is characterized by a small variation of the deflection of the deflecting edge in particular when changing the operating state of Oberriemchens.

Dies wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 erreicht.This is inventively achieved by the characterizing features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous developments of the invention are the subject of the dependent claims.

Gemäß Anspruch 1 wird vorgeschlagen, dass mindestens ein Paar der Führung des Riemchenführers dienende, miteinander korrespondierende Führungselemente am Mittelstück und am Riemchenführer außerhalb der Laufbahnbreite des Oberriemchens angeordnet sind. Der wesentliche Vorteil dieser Anordnung besteht darin, dass die der Führung des Riemchenführers dienenden Führungselemente gegenüber der Anordnung gemäß dem Stand der Technik, wonach sie innerhalb der Laufbahnbreite und unterhalb des Riemchenführers angeordnet sind, länger gestaltet werden können. Durch diese Maßnahme lässt sich die Führungslänge gegenüber dem aus dem Stand der Technik bekannten Oberriemchenhalter deutlich verlängern, wodurch das Maß der Auf- und Abbewegung der Umlenkkante auf das in seiner Größe bekannte funktionsbezogene Spiel des der Führung dienenden Führungselementes reduziert wird. Ein Kippen der Umlenkkante infolge einer Änderung des Betriebszustandes, wie weiter oben zum Stand der Technik beschrieben worden ist, wird durch diese Anordnung nahezu vollständig vermieden. Durch die Verringerung des Maßes der Auslenkung der Umlenkkante auf Grund eines Wechsels des Betriebszustandes des Oberriemchens wird das Ergebnis des Verzugsprozesses und des sich daran anschließenden Spinnprozesses positiv beeinflusst.According to claim 1 it is proposed that at least one pair of the guide of the strap guide serving, mutually corresponding guide elements are arranged on the center piece and the strap guide outside the track width of the top apron. The main advantage of this arrangement is that the guide elements serving the guidance of the Riemchenführers compared to the arrangement according to the prior art, according to which they within the track width and are arranged below the Riemchenführers, can be made longer. By this measure, the guide length over the known from the prior art Oberriemchenhalter can be significantly extended, whereby the degree of up and down movement of the deflection is reduced to the known in its size function-related game of the guide serving guide element. A tilting of the deflection edge as a result of a change in the operating state, as has been described above in the prior art, is almost completely avoided by this arrangement. By reducing the degree of deflection of the deflecting edge due to a change in the operating state of the upper apron, the result of the drafting process and the subsequent spinning process is positively influenced.

Hierzu kann das mindestens eine Führungselement am Mittelstück als Führungsnut ausgebildet sein, während das mindestens eine Führungselement am Riemchenführer als Führungsschiene ausgebildet sein kann.For this purpose, the at least one guide element may be formed on the middle piece as a guide groove, while the at least one guide element may be formed on the strap guide as a guide rail.

Hierbei können die Führungsnut beziehungsweise die Führungsschiene durchgehend ausgeführt sein.In this case, the guide groove or the guide rail can be designed continuously.

Alternativ kann das als mindestens eine Führungsnut ausgebildete Führungselement eine Unterbrechung aufweisen.Alternatively, the guide element formed as at least one guide groove may have an interruption.

Ebenso kann das als mindestens eine Führungsschiene ausgebildete Führungselement eine Unterbrechung aufweisen.Likewise, the guide element formed as at least one guide rail may have an interruption.

Die Ausdehnung der in der Horizontalebene der Führungsschiene und/oder der Führungsnut vorgesehenen Unterbrechung ist derart gewählt, dass sich die unterbrechungsfreien Abschnitte von Führungsnut und Führungsschiene zumindest partiell überlappen. So sollte die Anordnung einer Unterbrechung an der mindestens einen Führungsnut und/oder an der mindestens einen Führungsschiene so gewählt sein, dass alle Abschnitte einer unterbrochenen Führungsschiene, unabhängig von der Position des Riemchenführers gegenüber dem Mittelstück, stets mit ihren korrespondierenden Abschnitten der unterbrochenen Führungsnut zumindest partiell in Eingriff stehen, um ein Kippen der Umlenkkante infolge einer Änderung des Betriebszustandes sicher zu vermeiden.The extension of the interruption provided in the horizontal plane of the guide rail and / or the guide groove is selected such that the uninterrupted sections of guide groove and guide rail overlap at least partially. Thus, the arrangement of an interruption at the at least one guide groove and / or on the at least one guide rail should be chosen so that all sections of an interrupted guide rail, regardless of the position of the Riemchenführer opposite the center, always with their corresponding portions of the broken guide at least partially are engaged to safely avoid tilting of the deflecting edge due to a change in the operating state.

In bevorzugter Weiterbildung kann sich die Führungsnut innerhalb ihrer Horizontalebene über die Längsausdehnung des Riemchenführers hinaus, jedoch durch den vorhandenen Bauraum begrenzt, erstrecken. Dies begünstigt den beschriebenen Effekt der Verringerung des Maßes der Auf- und Abbewegung der Umlenkkante noch.In a preferred embodiment, the guide groove within its horizontal plane over the longitudinal extent of the Riemchenführers out, but limited by the available space, extend. This favors the described effect of reducing the degree of up and down movement of the deflection still.

Insbesondere kann sich die Führungsnut bis zur Umlenkkante des Riemchenführers erstrecken. Dadurch kann das Auskragen des Riemchenführers über die Führungsnut hinaus reduziert werden. Entsprechendes kann erreicht werden, wenn sich die Führungsnut auf der der Umlenkkante abgewandten Seite des Riemchenführers über dieses hinaus erstreckt, um das Auskragen zu reduzieren.In particular, the guide groove can extend to the deflection edge of the strap guide. As a result, the protrusion of the Riemchenführers can be reduced beyond the guide. The same can be achieved if the guide groove on the side facing away from the deflection edge of the Riemchenführers extends beyond this, in order to reduce the protrusion.

In einer bevorzugten Ausführungsform kann der Riemchenführer beidseitig mit einer Führungsschiene und das Mittelstück mit korrespondierenden Führungsnuten ausgeführt sein. Diese Ausgestaltung hat den Vorteil, dass die Riemchenführer auf beiden Seiten identisch ausgeführt sein können, was sich vorteilhaft auf die Herstellkosten des vorzugsweise als Spritzgussteil ausgeführten Bauteiles sowie die Montage des Oberriemchenhalters auswirkt.In a preferred embodiment, the Riemchenführer can be executed on both sides with a guide rail and the middle piece with corresponding guide grooves. This embodiment has the advantage that the Riemchenführer can be made identical on both sides, which has an advantageous effect on the manufacturing costs of preferably designed as an injection molded part and the assembly of Oberriemchenhalters.

Bevorzugt kann die Länge der beiden Führungsnuten unterschiedlich sein. Diese Ausgestaltung des Mittelstücks vereinfacht die Montage und Demontage des Oberriemchens.Preferably, the length of the two guide grooves may be different. This embodiment of the centerpiece simplifies the assembly and disassembly of the upper apron.

Hierbei sollte die kürzere der beiden Führungsnuten an der Außenkante des Mittelstückes angeordnet sein, um das Oberriemchen leichter aufbringen und abziehen zu können.In this case, the shorter of the two guide grooves should be arranged on the outer edge of the middle piece in order to be able to apply and pull off the upper apron more easily.

Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in the drawings.

Darin zeigen:

Fig. 1
eine perspektivische Ansicht eines erfindungsgemäßen Oberriemchenhalters;
Fig. 2
eine Frontalansicht des Oberriemchenhalters gemäß Fig. 1;
Fig. 3
eine Schnittansicht des Oberriemchenhalters entlang der Linie A-A gemäß Fig. 2;
Fig. 4
eine Draufsicht auf eine zweite Ausführungsform eines Oberriemchenhalters;
Fig. 5
eine Draufsicht eines Riemchenführers gemäß der zweiten Ausführungsform nach Fig. 4.
Fig. 6
eine perspektivische Ansicht eines Riemchenführers gemäß einer dritten Ausführungsform des Oberriemchenhalters;
Fig. 7
eine perspektivische Ansicht des Oberriemchenhalters gemäß einer vierten Ausführungsform.
Show:
Fig. 1
a perspective view of a Oberriemchenhalters invention;
Fig. 2
a frontal view of Obermiemchenhalters according to Fig. 1 ;
Fig. 3
a sectional view of the upper apron holder along the line AA according to Fig. 2 ;
Fig. 4
a plan view of a second embodiment of a Obermiemchenhalters;
Fig. 5
a plan view of a Riemchenführers according to the second embodiment according to Fig. 4 ,
Fig. 6
a perspective view of a Riemchenführer according to a third embodiment of the upper apron holder;
Fig. 7
a perspective view of Obermiemchenhalters according to a fourth embodiment.

Die Darstellung in Fig. 1 zeigt einen Oberriemchenhalter 1, der aus einem Mittelstück 2 und aus zwei Riemchenführern 3 besteht. Das Mittelstück 2 wird auf eine Achse 5 einer Doppeloberwalze 6 aufgesetzt. Die Doppeloberwalze 6 ist in bekannter Weise an einem Lenker eines Oberwalzen- Trag- und Belastungsarms gehalten. Die Riemchenführer 3 sind den beiden drehbar gelagerten Oberwalzen 6 zugeordnet.The representation in Fig. 1 shows a Oberriemchenhalter 1, which consists of a middle piece 2 and two Riemchenführern 3. The middle piece 2 is placed on an axis 5 of a double top roller 6. The double top roller 6 is held in a known manner on a handlebar of a top roller support and loading arm. The Riemchenführer 3 are assigned to the two rotatably mounted upper rollers 6.

Ein nicht dargestelltes Oberriemchen umschlingt die Oberwalze 6 und den Riemchenführer 3. Das Oberriemchen wird dabei über den Riemchenführer 3 geführt und an einer Umlenkkante 16 umgelenkt. Die Laufbahnbreite des Riemchenführers 3 wird durch senkrecht zur Bewegungsrichtung des Oberriemchens angeordnete Wandungen 4 an dem Riemchenführer 3 begrenzt, wie aus den Fig. 1 bis 3 ersichtlich ist, wodurch ein Abrutschen des Oberriemchens von dem Riemchenführer 3 verhindert werden kann. Um das Oberriemchen zu spannen, ist der Riemchenführer 3 mit einer Federkraft beaufschlagt, die durch eine zwischen dem Mittelstück 2 und dem jeweiligen Riemchenführer 3 angeordnete Feder 7 erzeugt wird. Die Feder 7 ist, wie in Fig. 3 dargestellt ist, in jeweils ineinandergreifenden Rundkanälen 8, 9 des Mittelstücks 2 und des Riemchenführers 3 angeordnet, um die Feder 7 vor Faserflug zu schützen.An Oberriemchen not shown wraps around the upper roller 6 and the Riemchenführer 3. The Oberriemchen is guided over the Riemchenführer 3 and deflected at a deflection edge 16. The track width of the Riemchenführers 3 is bounded by arranged perpendicular to the direction of movement of Oberriemchens walls 4 on the Riemchenführer 3, as shown in Fig. 1 to 3 it can be seen, whereby slipping of the Oberriemchens can be prevented by the Riemchenführer 3. In order to tension the upper apron, the Riemchenführer 3 is acted upon by a spring force which is generated by a arranged between the middle piece 2 and the respective Riemchenführer 3 spring 7. The spring 7 is as in Fig. 3 is shown, in each intermeshing round channels 8, 9 of the center piece 2 and the Riemchenführers 3 arranged to protect the spring 7 against fiber fly.

Zur Führung des Riemchenführers 3 sind am Mittelstück 2 außerhalb der Laufbahnbreite des Oberriemchens Führungselemente angeformt. Die Führungselemente sind in dem dargestellten Ausführungsbeispiel als außerhalb der Laufbahnbreite des Oberriemchens angeordnete Führungsnuten 11 und Führungsschienen 12 ausgebildet. Die Führungsnuten 11 dienen der Aufnahme der an dem Riemchenführer 3 angeformten korrespondierenden Führungsschienen 12. Des Weiteren sind an dem Riemchenführer 3 innerhalb der Laufbahnbreite Zapfen 13 angeordnet, die an ihren freien Enden Rastnasen 14 aufweisen. Die Zapfen 13 greifen in korrespondierende, ebenfalls innerhalb der Laufbahnbreite des Oberriemchens befindliche Kanäle 15 ein. Die Rastnasen 14 des Riemchenführers 3 hintergreifen in seiner an dem Mittelstück 2 montierter Position Ausnehmungen in den Kanälen 15. Auf diese Weise wird verhindert, dass sich der Riemchenführer 3 von dem Mittelteil 2 des Oberriemchenhalters 1 lösen kann, wenn das Oberriemchen entfernt wird.To guide the Riemchenführers 3 guide elements are formed on the center piece 2 outside the track width of the upper apron. The guide elements are formed in the illustrated embodiment as outside the raceway width of the upper apron arranged guide grooves 11 and guide rails 12. The guide grooves 11 serve to receive the corresponding guide rails 12 integrally formed on the strap guide 3. Furthermore, pins 13 are arranged on the strap guide 3 within the raceway width and have latching lugs 14 at their free ends. The pins 13 engage in corresponding, also located within the career width of Oberriemchens channels 15 a. The latching lugs 14 of the Riemchenführers 3 engage behind in its mounted on the central part 2 position recesses in the channels 15. In this way it is prevented that the Riemchenführer 3 can be detached from the central part 2 of the upper apron holder 1 when the upper apron is removed.

Wie aus der Darstellung in Fig. 2 ersichtlich ist, weist das Mittelstück 2 in dem Bereich, in dem jeweils der Riemchenführer 3 angeordnet ist, eine geringere horizontale Ausdehnung auf, als in dem mittleren Bereich des Mittelstückes 2, welcher der Befestigung auf der Achse 5 der Doppeloberwalze 6 dient. Dies ist dadurch bedingt, dass bei konventionellen Oberriemchenhaltern 1 die Zapfen 13 und die korrespondierenden Kanäle 15, die der Führung des Riemchenführers 3 dienen, in ihrer Länge beschränkt sind, da sie innerhalb der Laufbahnbreite des Oberriemchens an dem Riemchenführer 3 beziehungsweise dem Mittelstück 2 angeordnet sind.As from the illustration in Fig. 2 it can be seen, the center piece 2 in the region in which the strap guide 3 is arranged, a smaller horizontal extent, as in the central region of the central piece 2, which serves the attachment to the axis 5 of the double top roller 6. This is due to the fact that in conventional Obermiemchenhaltern 1, the pins 13 and the corresponding channels 15, which serve the leadership of the Riemchenführers 3, are limited in length, since they are arranged within the raceway width of Oberriemchens on the Riemchenführer 3 and the middle piece 2 ,

Durch die erfindungsgemäße Anordnung der Führungsnuten 11 und der korrespondierenden Führungsschienen 12 außerhalb der Laufbahnbreite des Oberriemchens können die Führungsnuten 11 und die korrespondierenden Führungsschienen 12 länger ausgeführt werden, als die Kanäle 15 und die Zapfen 13 innerhalb der Laufbahnbreite des Oberriemens gemäß dem Stand der Technik. Weiterhin erstreckt sich, wie aus Fig. 3 ersichtlich ist, das vordere Ende der Führungsschienen 12 bis in die unmittelbarer Nähe der Umlenkkante 16 des Riemchenführers 3, so dass das Auskragen der Riemchenführer 3 über die Führungsschiene 11 hinaus reduziert wird. Durch diese Maßnahmen liegt das Maß der möglichen Auf- und Abbewegung der Umlenkkante 16 des Riemchenführers 3 nur noch in der Größenordnung des funktionsbedingten Spiels der Führungselemente. Ein Kippen der Umlenkkante 16 auf Grund der auftretenden Zugkräfte infolge der Änderung des Betriebszustandes bei einem in Bewegungsetzen des Oberriemchens beziehungsweise bei einem Stoppen des Oberriemchens, die in Abhängigkeit vom Betriebszustand unterschiedlich gerichtet sind, wird dadurch nahezu verhindert.The inventive arrangement of the guide grooves 11 and the corresponding guide rails 12 outside the raceway width of Oberriemchens the guide grooves 11 and the corresponding guide rails 12 can be made longer than the channels 15 and the pins 13 within the track width of the upper belt according to the prior art. Further, as extends Fig. 3 it can be seen, the front end of the guide rails 12 to the immediate vicinity of the deflection edge 16 of the Riemchenführers 3, so that the projection of the Riemchenführer 3 is reduced over the guide rail 11 addition. By these measures, the extent of the possible up and down movement of the deflecting edge 16 of the Riemchenführers 3 is only in the order of the function-related play of the guide elements. A tilting of the deflection edge 16 due to the tensile forces occurring as a result of the change in the operating state at a set in motion of Oberriemchens or when stopping the Oberriemchens that are directed differently depending on the operating state, this is almost prevented.

Die Führungsnuten 11 des Mittelstückes 2 lassen sich in Abhängigkeit von dem zur Verfügung stehenden Bauraum über die Umlenkkante 16 beziehungsweise über die der Umlenkkante 16 abgewandten Seite hinaus verlängern.The guide grooves 11 of the middle piece 2 can be extended depending on the available space on the deflecting edge 16 and beyond the deflecting edge 16 side facing away.

In Fig. 4 ist eine Draufsicht auf eine modifizierte Ausführungsform eines Oberriemchenhalters 1' sowie in Fig. 5 eine Draufsicht auf einen Riemchenführer gemäß der zweiten Ausführungsform nach Fig. 4 dargestellt. Bei dieser Ausführungsform sind die Führungselemente in Form der Führungsnuten 11' an dem Mittelstück 2' und der Führungsschienen 12' auf der der Umlenkkante 16 des Riemchenführers 3' abgewandten Seite verlängert ausgeführt, wie aus den Fig. 4 und 5 ersichtlich ist. Der Vorteil besteht darin, dass, unter optimaler Ausnutzung des vorhanden rückwärtigen Bauraumes des Oberriemchenhalters 1', durch die Verlängerung der Führungselemente 11', 12' über die Breite des Mittelstückes 2' hinaus, die Kippneigung des Riemchenführers 3' bei einem Wechsel des Betriebszustandes über das vorhandene Spiel zwischen den Führungselementen 11', 12' hinaus verringert werden kann.In Fig. 4 is a plan view of a modified embodiment of a Oberriemchenhalters 1 'and in Fig. 5 a plan view of a Riemchenführer according to the second embodiment according to Fig. 4 shown. In this embodiment, the guide elements in the form of the guide grooves 11 'on the middle piece 2' and the guide rails 12 'on the deflecting edge 16 of the Riemchenführers 3' side facing away extended, as shown in 4 and 5 is apparent. The advantage is that, with optimal utilization of the available rear space of the upper apron holder 1 ', by the extension of the guide elements 11', 12 'over the width of the middle piece 2' addition, the tendency to tilt of the Riemchenführers 3 'in a change of operating state the existing clearance between the guide elements 11 ', 12' can also be reduced.

Weiterhin ist in Fig. 6 eine perspektivische Ansicht eines Riemchenführers 3" gemäß einer dritten Ausführungsform dargestellt, dessen Führungsschiene 12" an zumindest einer Stelle durch eine Aussparung 10 unterbrochen ist. Die hier dargestellte unterbrochene Ausführung der Führungsschiene 12" führt in der Führungsnut 11 zu einer Zwei-Punkt-Auflage und stellt eine geringfügige Modifikation dar, die jedoch die gleiche Stabilität gewährleistet, wie die Variante der Riemchenführer 3, 3' mit einer durchgehenden Führungsschiene 12 und 12' gemäß den Fig. 1 bis 5. Ebenso könnten auch die Führungsnut und/oder die Führungsschiene mit zumindest einer Unterbrechung respektive Aussparung 10 versehen sein. Bei der Unterbrechung der Führungsnut kann es sich um eine Materialaussparung handeln, die die gleitende Verschiebbarkeit der durchgehenden Führungsschiene 12, 12' wie auch einer durch eine Aussparung 10 unterbrochenen Führungsschiene 12" in der Horizontalebene der unterbrochenen Führungsnut nicht behindert.Furthermore, in Fig. 6 a perspective view of a Riemchenführers 3 "shown according to a third embodiment, the guide rail 12" is interrupted at least one point by a recess 10. The illustrated here interrupted embodiment of the guide rail 12 "leads in the guide groove 11 to a two-point support and represents a minor modification, but the ensures the same stability as the variant of Riemchenführer 3, 3 'with a continuous guide rail 12 and 12' according to the Fig. 1 to 5 , Likewise, the guide groove and / or the guide rail could be provided with at least one interruption or recess 10. The interruption of the guide groove may be a material recess which does not obstruct the sliding displaceability of the continuous guide rail 12, 12 'as well as a guide rail 12 "interrupted by a recess 10 in the horizontal plane of the interrupted guide groove.

Mit Bezug auf Fig. 7, die eine vierte Ausführungsform eines Oberriemchenhalters 1" gemäß Fig. 1 zeigt, weist das Mittelstück 2' Führungsnuten 11' auf, die durch sich in der Horizontalebene erstreckende Aussparungen 18 abschnittsweise unterbrochen sind. Die durchgehenden Führungsschienen 12 des Riemchenführers 3 liegen bei dieser Variante ebenfalls nur an zwei Stellen an den unterbrechungsfreien Abschnitten der Führungsnut 11'auf.Regarding Fig. 7 , which shows a fourth embodiment of a top apron holder 1 "according to FIG Fig. 1 shows, the middle piece 2 'guide grooves 11', which are interrupted in sections by extending in the horizontal plane recesses 18. The continuous guide rails 12 of the Riemchenführers 3 are in this variant also only at two points on the uninterrupted sections of the guide groove 11 '.

Letztlich ist auch eine Kombination beider Varianten denkbar, bei der sowohl die Führungsschiene als auch die Führungsnut Unterbrechungen in Form von Aussparungen aufweisen.Ultimately, a combination of both variants is conceivable in which both the guide rail and the guide groove have interruptions in the form of recesses.

Voraussetzung für die Stabilisierung des Riemchenführers gemäß der dritten oder vierten Ausführungsform beziehungsweise einer Kombination von Riemchenführer und Mittelstück aus beiden Ausführungsformen während des Betriebes sowie bei einem Wechsel des Betriebszustandes ist, dass die Führungselemente stets derart miteinander in Berührung stehen, dass ein Kippen des Riemchenführers zur Horizontalebene vermieden wird.Prerequisite for the stabilization of the Riemchenführer according to the third or fourth embodiment or a combination of Riemchenführer and middle piece of both embodiments during operation and a change of operating state is that the guide elements are always in contact with each other such that a tilting of the Riemchenführers to the horizontal plane is avoided.

Claims (11)

Oberriemchenhalter (1, 1', 1") für Streckwerke von Spinnereimaschinen mit mindestens einem mit einer Federkraft beaufschlagten, ein Oberriemchen spannenden und an einer Umlenkkante (16) umlenkenden Riemchenführer (3, 3', 3"), der an einem Mittelstück (2, 2') des Oberriemchenhalters (1, 1', 1") gehalten ist,
dadurch gekennzeichnet,
dass mindestens ein Paar der Führung des Riemchenführers (3, 3', 3") dienende, miteinander korrespondierende Führungselemente (11, 12, 11', 12', 12") am Mittelstück (2, 2') und am Riemchenführer (3, 3', 3") außerhalb der Laufbahnbreite des Oberriemchens angeordnet sind.Top apron holder (1, 1 ', 1 ") for drafting of spinning machines with at least one with a spring force, a top apron exciting and on a deflecting edge (16) deflecting strap guide (3, 3', 3") at a center piece (2 , 2 ') of the upper apron holder (1, 1', 1 ") is held,
characterized,
in that at least one pair of guide elements (11, 12, 11 ', 12', 12 ") serving the guide of the apron guide (3, 3 ', 3") on the center piece (2, 2') and on the apron guide (3, 3 ', 3 ") are arranged outside the raceway width of the upper apron. Oberriemchenhalter (1, 1', 1") nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Führungselement am Mittelstück (2, 2') als Führungsnut (11, 11') ausgebildet ist.Upper apron holder (1, 1 ', 1 ") according to claim 1, characterized in that the at least one guide element on the central piece (2, 2') as a guide groove (11, 11 ') is formed. Oberriemchenhalter (1, 1', 1") nach Anspruch 2, dadurch gekennzeichnet, dass die Führungsnut (11) durchgehend ausgeführt ist.Oberriemchenhalter (1, 1 ', 1 ") according to claim 2, characterized in that the guide groove (11) is designed to be continuous. Oberriemchenhalter (1, 1', 1") nach Anspruch 2, dadurch gekennzeichnet, dass die mindestens eine Führungsnut (11, 11') eine Unterbrechung aufweist.Upper apron holder (1, 1 ', 1 ") according to claim 2, characterized in that the at least one guide groove (11, 11') has an interruption. Oberriemchenhalter (1, 1', 1") nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Führungselement am Riemchenführer (2, 2') als Führungsschiene (12, 12', 12") ausgebildet ist.Oberriemchenhalter (1, 1 ', 1 ") according to claim 1, characterized in that the at least one guide element on Riemchenführer (2, 2 ') as a guide rail (12, 12', 12 ") is formed. Oberriemchenhalter (1, 1', 1") nach Anspruch 5, dadurch gekennzeichnet, dass die Führungsschiene (12, 12') durchgehend ausgeführt ist.Oberriemchenhalter (1, 1 ', 1 ") according to claim 5, characterized in that the guide rail (12, 12') is executed continuously. Oberriemchenhalter (1, 1', 1") nach Anspruch 5, dadurch gekennzeichnet, dass die mindestens eine Führungsschiene (12'') eine Unterbrechung (10) aufweist.Upper apron holder (1, 1 ', 1 ") according to claim 5, characterized in that the at least one guide rail (12'') has an interruption (10). Oberriemchenhalter (1, 1', 1") nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sich die Führungsnut (11') innerhalb ihrer Horizontalebene über die Länge des Riemchenführers (3') hinaus, jedoch durch den vorhandenen Bauraum begrenzt, erstreckt.Oberriemchenhalter (1, 1 ', 1 ") according to one of claims 1 to 7, characterized in that the guide groove (11') within its horizontal plane over the length of the Riemchenführers (3 ') addition, but limited by the available space, extends. Oberriemchenhalter (1, 1', 1") nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Riemchenführer (3, 3', 3") beidseitig mit einer Führungsschiene (12, 12', 12") und das Mittelstück (2, 2') mit korrespondierenden Führungsnuten (11, 11') ausgeführt ist.Upper apron holder (1, 1 ', 1 ") according to one of claims 1 to 8, characterized in that the Riemchenführer (3, 3', 3") on both sides with a guide rail (12, 12 ', 12 ") and the middle piece ( 2, 2 ') with corresponding guide grooves (11, 11') is executed. Oberriemchenhalter (1, 1', 1") nach Anspruch 9, dadurch gekennzeichnet, dass die Länge der beiden Führungsnuten (11, 11') unterschiedlich ist.Oberriemchenhalter (1, 1 ', 1 ") according to claim 9, characterized in that the length of the two guide grooves (11, 11') is different. Oberriemchenhalter (1, 1', 1") nach Anspruch 10, dadurch gekennzeichnet, dass die kürzere der beiden Führungsnuten (11, 11') an der Außenkante des Mittelstückes (2, 2') angeordnet ist.Upper apron holder (1, 1 ', 1 ") according to claim 10, characterized in that the shorter of the two guide grooves (11, 11') on the outer edge of the central piece (2, 2 ') is arranged.
EP10004321A 2009-06-25 2010-04-23 Upper apron holder for stretching units of spinning machines Active EP2267201B1 (en)

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CN104562324B (en) * 2015-01-27 2017-01-11 江南大学 Combined adjustment upper pin
CN105714422A (en) * 2016-04-06 2016-06-29 江苏联宏纺织有限公司 Pinning bracket for middle roller iron rods
DE102019114662A1 (en) * 2019-05-31 2020-12-03 Maschinenfabrik Rieter Ag Cage for a pair of pressure rollers of a drafting system
LU102828B1 (en) * 2021-06-10 2022-12-12 Saurer Spinning Solutions Gmbh & Co Kg Upper apron holder for an apron drafting system of a textile machine
CN115961391A (en) * 2022-11-22 2023-04-14 武汉纺织大学 Detachable tension self-adjusting cotton spinning lower pin
LU503151B1 (en) * 2022-12-07 2024-06-07 Saurer Spinning Solutions Gmbh & Co Kg Tensioning device and spinning machine

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EP3461938A1 (en) * 2017-09-29 2019-04-03 Pinter Caipo, S.A.U. Cradle assembly for a drafting device of a spinning machine

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RU2010125860A (en) 2011-12-27
DE102009030367A1 (en) 2010-12-30
CN101929008A (en) 2010-12-29
PT2267201E (en) 2012-07-06
JP5489877B2 (en) 2014-05-14
JP2011006835A (en) 2011-01-13
RU2563717C2 (en) 2015-09-20
TW201111571A (en) 2011-04-01
EP2267201B1 (en) 2012-06-20
ES2385193T3 (en) 2012-07-19
TWI463048B (en) 2014-12-01
PL2267201T3 (en) 2012-11-30
CN101929008B (en) 2014-11-05

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