EP1590514B1 - Closing element for polygonal tubes guiding compressed air on a spinning frame - Google Patents

Closing element for polygonal tubes guiding compressed air on a spinning frame Download PDF

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Publication number
EP1590514B1
EP1590514B1 EP03767658A EP03767658A EP1590514B1 EP 1590514 B1 EP1590514 B1 EP 1590514B1 EP 03767658 A EP03767658 A EP 03767658A EP 03767658 A EP03767658 A EP 03767658A EP 1590514 B1 EP1590514 B1 EP 1590514B1
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EP
European Patent Office
Prior art keywords
closing element
sealing
compressed air
counterpart
element according
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
EP03767658A
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German (de)
French (fr)
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EP1590514A1 (en
Inventor
Wilhelm Birkenmaier
Jürgen Schlegel
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 Accotex Texparts GmbH
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Publication of EP1590514A1 publication Critical patent/EP1590514A1/en
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    • 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
    • D01H5/46—Loading arrangements
    • D01H5/52—Loading arrangements using fluid pressure

Definitions

  • the invention relates to a closure element for compressed air-bearing polygonal pipes according to the preamble of claim 1.
  • Pneumatic loadable top roll center and loading arms which are attached to a support bar of the machine by means of supports, are used on drafting machines for spinning machines.
  • the support rod is hollow and serves as a compressed air line.
  • Such a drafting system is used for example in the DE 198 29 403 A1 described.
  • a support rod formed from polygonal tubular pieces known the pipe sections are each provided at their ends with closure elements.
  • a support rod which is composed of individual pieces of pipe, a modular construction of the support rod and the compressed air supply for spinning machines of different lengths is possible.
  • the closure elements are sealingly inserted into the ends of the polygonal pipe pieces.
  • the compressed air guide between the polygonal pipe pieces is made by connecting pipe pieces between the end elements.
  • the polygonal tubes are added at their ends in recesses of also referred to as a punch supports and means Fixed screw.
  • the profile tube is penetrated in the end, in which the respective end element is inserted, by a fixing screw.
  • the present invention seeks to improve the known closure elements.
  • closure element is the subject of the dependent claims.
  • the closure element according to the invention seals the polygonal tube safely and with long-term stability.
  • An additional security for example by positive locking pins, against displacement by the pressure built up inside the polygonal pipe air pressure is not required because the sealing element is sufficiently firmly fixed in its position with activated sealing function in position. Assembly and disassembly of the closure elements with respect to closure elements according to the prior art are facilitated.
  • the closure elements and the polygonal pipes are reusable, without additional effort, such as cleaning, operate.
  • a closure element according to claim 2 makes it possible to apply the sealing element uniformly with axial pressure and to achieve a reliable sealing effect.
  • the closure element according to claim 3 makes it possible to effect sealing and fixing at the same time in a used already in the polygonal tube closure element.
  • the release of the fixation and the dismantling of the closure element from the polygonal tube is easy and simple to carry out.
  • a closure element according to claim 4 provides sufficient space for the compressed air channel, which ensures the necessary flow of compressed air, and allows next to a central engagement of the screw on the counterpart, which counteracts a tilting of the counterpart when tightening the screw. In addition, can be prevented by the formation of tail and counterpart in the Siemens.des compressed air channel a non-correct assembly of the parts of the closure element.
  • a closure element according to claim 6 or 7 ensures a sufficient and secure sealing effect.
  • a closure element according to claim 8 is universally suitable for various types of supports or punches.
  • a two-sided support profile on the recess of the closure element counteracts deformation of the hollow profile, even with excessive tightening torque of the mounting screws.
  • the closure element is designed so that it seals the interior of the polygonal tube against the recess.
  • the fastening points of the polygonal tubular piece are arranged in a region of the closure element which is not compressed air-conducting.
  • the openings in the polygonal pipe, through which the fastening screws of a screw connection between the polygonal pipe and the machine lead, need not be sealed.
  • the shape and position of the recess ensures sufficient stiffening of the end of the polygonal tube.
  • the closure element according to the invention seals the interior of the polygonal tube safely and with long-term stability. Simultaneously with the sealing effect, the closure element can be fixed in its position against the ruling in the interior of the polygonal tube air pressure without additional aids. Any necessary repair of the support rod forming polygonal tube is possible in a simple manner with low disassembly and assembly effort even when the polygonal tube is installed as part of a support rod between other polygonal tubes.
  • the end element 1 comprises an end piece 2, a sealing element 3, a counterpart 4, a screw 5 and a sealing washer 6.
  • the end piece 2 has a guide portion 7, the outer profile of the inner profile of in FIG. 1 dashed polygonal pipe 8 is adapted.
  • the polygonal tube 8 is formed as a square profile.
  • the guide portion 7 is followed by a sealing portion 9 with the same outer profile profile, wherein the width and height of the outer profile of the sealing portion 9 is formed smaller than the width and height of the guide portion 7.
  • a Stop 10 is formed, which cooperates with the end face 11 of the polygonal tube 8 and beyond the desired position beyond pulling or pushing the closure element 1 in the polygonal tube 8 is prevented.
  • the guide section 7 has a recess 12. Through this recess 12 and the holes 13 engages a fastening screw, not shown for reasons of simplification, with which the polygonal tube 8 is attached to the support or punch. On both sides of the recess 12, a support profile 14, 15 is formed, the a deformation of the hollow polygonal tube 8 counteracts.
  • the recess 12 in the end piece 2 for the fastening screw is dimensioned sufficiently large to be universally suitable and usable for different depending on the execution of the punch screw sizes and positions.
  • the stop 10 has the center of the mouth of the feed channel 16 for the screw 5 and off-center the mouth of the connecting channel 17 for the compressed air guide.
  • the profile shape of the sealing element 3 corresponds to the polygonal tube 8 and the sealing portion 9, wherein the inner profile of the sealing element 3, the outer profile of the sealing portion 9 and the outer profile of the sealing element 3 is adapted to the inner profile of the polygonal tube 8.
  • the sealing element 3 is made of rubber.
  • the wall thickness T of the sealing element 3 is slightly smaller than the distance between the inner side of the polygonal tube 8 and the outer side of the guide section 7 in the case of the terminating element 1 inserted into the polygonal tube 8.
  • the length L of the sealing element 3 is a multiple of the wall thickness T and is designed so that the counterpart 4, the sealing element 3 can apply sufficient axial pressure.
  • the counterpart 4 comprises a hollow profile 18 with the same profile shape as the sealing element 3 and is at one end by the in Fig. 2 recognizable rear wall 19 completed.
  • the rear wall 19 has inwardly directed, a support member 20 and a channel member 21.
  • the hollow profile 18 projects with its edge 22 relative to the support member 20.
  • the channel element 21 still protrudes beyond the edge 22.
  • the counterpart 4 can only fit together with the tail 2, if the slightly projecting channel element 21 occupies the correct position.
  • FIG. 1 illustrated embodiment top left in the counterpart 4.
  • the necessary flow through the compressed air is ensured.
  • the rear wall 19 and the support member 20 extends centrally a bore 23 into which a thread is formed.
  • Both the end piece 2 and the counterpart 4 are made of zinc die-cast.
  • the sectional view of FIG. 2 Further details of the design of the closure element 1 can be seen.
  • the feed channel 16 merges in the interior of the end piece 2 to a smaller diameter, wherein the transition to the smaller diameter of the feed channel 16 is designed as a support 24.
  • the connecting channel 17 merges into a compressed air channel 25, which has a smaller effective cross section than the connecting channel 17.
  • the passage opening 26 can be seen for the compressed air.
  • the channel element 21 forms part of the extension of the compressed air channel 25.
  • the sealing element 3 When assembling the closure element 1, the sealing element 3 is first pushed onto the sealing portion 9 of the end piece 2 to the guide portion 7. Subsequently, the screw 5 is inserted together with the sealing washer 6 in the feed channel 16, wherein the sealing washer 6 is placed on the support 24. The end of the screw is screwed into the threaded bore 23 of the counterpart 4 only so far that it grasps in the thread and that the counterpart 4 still exerts no axial pressure on the sealing element 3.
  • closure element 1 is inserted into the end of the polygonal tube 8 to the stop 10.
  • the screw 5 the head has a hexagon socket 27, tightened so that the end piece 2 with its edge 22 axially exerts pressure on the sealing element 3.
  • the sealing element 3 applies to the inside of the polygonal tube 8, fixes the position of the closure element 1 against the air pressure occurring in the interior of the polygonal tube 8 and seals airtight between polygonal tube 8 and end piece 2.
  • FIG. 3 An end element 1 in this state is in FIG. 3 shown.
  • the compressed air can flow through the closure element 1 from the passage opening 26 via the compressed air channel 25 to the connecting channel 17 or in the opposite direction.
  • the polygonal tube 8 is adjoined at a small distance by an adjacent polygonal tube 28.
  • the inserted into the polygonal tube 28 terminating element 29 is formed in mirror image to the closure element 1.
  • the closure element 1 and the closure element 29 are connected to each other by a connecting tube 30 which is inserted with its ends in the connecting channel 17 and the connecting channel 31.
  • the sealing of the connecting tube 30 by means of O-ring seals 32, as shown in DE 198 30 048 A1 known.

Description

Die Erfindung betrifft ein Abschlußelement für druckluftführende Mehrkantrohre gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a closure element for compressed air-bearing polygonal pipes according to the preamble of claim 1.

An Streckwerken für Spinnereimaschinen werden pneumatisch belastbare Oberwalzentrag- und Belastungsarme eingesetzt, die mittels Stützen an einer Tragstange der Maschine befestigt sind. Die Tragstange ist hohl und dient gleichzeitig als Druckluftleitung. Ein derartiges Streckwerk wird beispielsweise in der DE 198 29 403 A1 beschrieben.Pneumatic loadable top roll center and loading arms, which are attached to a support bar of the machine by means of supports, are used on drafting machines for spinning machines. The support rod is hollow and serves as a compressed air line. Such a drafting system is used for example in the DE 198 29 403 A1 described.

Aus der gattungsbildenden DE 198 30 048 A1 ist eine aus Mehrkantrohrstücken gebildete Tragstange bekannt, wobei die Rohrstücke jeweils an ihren Enden mit Abschlußelementen versehen sind. Mit einer Tragstange, die aus einzelnen Rohrstücken zusammengesetzt ist, ist ein modularer Aufbau der Tragstange und der Druckluftzuführung für Spinnmaschinen unterschiedlicher Länge möglich. Die Abschlußelemente sind dichtend in die Enden der Mehrkantrohrstücke eingesetzt. Die Druckluftführung zwischen den Mehrkantrohrstücken erfolgt durch Verbindungsrohrstücke zwischen den Abschlußelementen.From the generic DE 198 30 048 A1 is a support rod formed from polygonal tubular pieces known, the pipe sections are each provided at their ends with closure elements. With a support rod, which is composed of individual pieces of pipe, a modular construction of the support rod and the compressed air supply for spinning machines of different lengths is possible. The closure elements are sealingly inserted into the ends of the polygonal pipe pieces. The compressed air guide between the polygonal pipe pieces is made by connecting pipe pieces between the end elements.

Die Abdichtung von nicht kreisförmigen Hohlprofilen mit elastischen Dichtelementen wie O-Ringen mit kreisförmigem Querschnitt oder mit Profilringen bereitet Schwierigkeiten, weil durch die Unregelmäßigkeiten des Profils des Dichtelementes in diesem nur ein gewisser innerer Spannungsausgleich erfolgt, ohne daß jedoch alle Zonen des Hohlprofils gleichmäßig und dichtend vom Dichtelement ausgefüllt werden. Vorzugsweise werden daher bei Mehrkanthohlprofilen pastöse Dichtstoffe in geeigneter Viskosität verwendet, die einen vom Hohlprofil und einem eingesetzten Dichtstück gebildeten Dichtkanal vollständig ausfüllen müssen. Es ist jedoch schwierig, dabei den Dichtkanal gleichmäßig und vollständig und in Serienfertigung prozeßsicher zu befüllen. Dies erfordert hohen Fertigungs- und Prüfaufwand. Die Dichtwirkung ist aufgrund des Alterungsverhaltens des Dichtstoffes und aufgrund der Arbeitsbeanspruchung, zum Beispiel durch Druckwechsel, häufig nicht langzeitstabil. Eine sichere, dauerhafte Abdichtung ist nicht gewährleistet. Treten im Betrieb Undichtigkeiten auf, sind derartige Dichtelemente nur schlecht demontierbar und nicht wiederverwendbar. Häufig muß das ganze Profilrohrstück ausgetauscht werden. Der Dichtstoff ist auch nur in sehr begrenztem Maße in der Lage, neben der Dichtfunktion auch das Dichtstück gegen den Innendruck im Profilrohr in der erforderlichen Position zu halten. Es sind zusätzliche, besondere Maßnahmen, zum Beispiel der Einbau von Sicherungsstiften, zur Sicherung gegen axiales Verschieben des Dichtstücks erforderlich.The sealing of non-circular hollow profiles with elastic sealing elements such as O-rings with circular cross-section or profile rings is difficult because of the irregularities of the profile of the sealing element in this only a certain internal stress compensation, but without all zones of the Hollow profiles are filled evenly and sealingly by the sealing element. Therefore, in polycarbonate profiles, it is preferred to use paste-like sealants of appropriate viscosity, which must completely fill a sealing channel formed by the hollow profile and a sealing piece used. However, it is difficult while filling the sealing channel evenly and completely and in series production process reliable. This requires high production and testing costs. The sealing effect is often not long-term stability due to the aging behavior of the sealant and due to the working stress, for example by pressure changes. A safe, permanent seal is not guaranteed. If leaks occur during operation, such sealing elements are difficult to disassemble and are not reusable. Often the entire profile pipe section must be replaced. The sealant is only to a very limited extent able to hold in addition to the sealing function, the sealing piece against the internal pressure in the profile tube in the required position. There are additional, special measures, such as the installation of locking pins required to secure against axial displacement of the sealing piece.

Wird, um den Halt des Dichtstücks an seiner Position am Ende des Mehrkantrohrs zu erhöhen, als Dichtstoff ein Kleber eingesetzt, ist eine Demontage des Abschlußelementes nur schwer und aufwendig durchführbar. Die Abschlußelemente und gegebenenfalls sogar das Mehrkantrohr sind in diesem Fall für eine sofortige Wiederverwendung nicht mehr geeignet.If, in order to increase the hold of the sealing piece at its position at the end of the polygonal pipe, as an adhesive used as a sealant disassembly of the closure element is difficult and expensive to carry out. The closure elements and possibly even the polygonal tube are no longer suitable in this case for immediate reuse.

Die Mehrkantrohre werden an ihren Enden in Ausnehmungen von auch als Stanze bezeichneten Stützen aufgenommen und mittels Schraubverbindungen fixiert. Das Profilrohr wird dazu im Endbereich, in dem auch das jeweilige Abschlußelement eingesetzt ist, von einer Befestigungsschraube durchdrungen. Durch das Anziehen der Befestigungsschraube kann es zu elastischen oder plastischen Verformungen des Mehrkanthohlprofils kommen, wodurch die Dichtwirkung des Abschlußelementes zusätzlich gefährdet wird.The polygonal tubes are added at their ends in recesses of also referred to as a punch supports and means Fixed screw. The profile tube is penetrated in the end, in which the respective end element is inserted, by a fixing screw. By tightening the fastening screw can cause elastic or plastic deformations of Mehrkanthohlprofils, whereby the sealing effect of the closure element is also at risk.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die bekannten Abschlußelemente zu verbessern.Based on the aforementioned prior art, the present invention seeks to improve the known closure elements.

Diese Aufgabe wird erfindungsgemäß durch ein Abschlußelement mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a closure element with the features of claim 1.

Weitere vorteilhafte Ausbildungen des Abschlußelementes sind Gegenstand der Unteransprüche.Further advantageous embodiments of the closure element are the subject of the dependent claims.

Das erfindungsgemäße Abschlußelement dichtet das Mehrkantrohr sicher und langzeitstabil ab. Eine zusätzliche Sicherung, zum Beispiel durch formschlüssige Sicherungsstifte, gegen Verschieben durch den im Inneren des Mehrkantrohrs aufgebauten Luftdruck ist nicht erforderlich, da das Abschlußelement bei aktivierter Dichtungsfunktion hinreichend fest in seiner Position kraftschlüssig fixiert ist. Montage und Demontage der Abschlußelemente gegenüber Abschlußelementen nach dem vorbekannten Stand der Technik werden erleichtert. Die Abschlußelemente und die Mehrkantrohre sind wiederverwendbar, ohne zusätzlichen Aufwand, wie zum Beispiel Reinigung, betreiben zu müssen.The closure element according to the invention seals the polygonal tube safely and with long-term stability. An additional security, for example by positive locking pins, against displacement by the pressure built up inside the polygonal pipe air pressure is not required because the sealing element is sufficiently firmly fixed in its position with activated sealing function in position. Assembly and disassembly of the closure elements with respect to closure elements according to the prior art are facilitated. The closure elements and the polygonal pipes are reusable, without additional effort, such as cleaning, operate.

Ein Abschlußelement gemäß Anspruch 2 ermöglicht es, das Dichtelement gleichmäßig mit axialem Druck zu beaufschlagen und eine zuverlässige Dichtwirkung zu erzielen.A closure element according to claim 2 makes it possible to apply the sealing element uniformly with axial pressure and to achieve a reliable sealing effect.

Das Abschlußelement nach Anspruch 3 erlaubt es, Abdichtung und Fixierung gleichzeitig bei einem bereits in das Mehrkantrohr eingesetzten Abschlußelement zu bewirken. Das Lösen der Fixierung und die Demontage des Abschlußelementes aus dem Mehrkantrohr ist leicht und auf einfache Weise durchführbar.The closure element according to claim 3 makes it possible to effect sealing and fixing at the same time in a used already in the polygonal tube closure element. The release of the fixation and the dismantling of the closure element from the polygonal tube is easy and simple to carry out.

Ein Abschlußelement gemäß Anspruch 4 bietet ausreichend Raum für den Druckluftkanal, der das notwendige Durchströmen der Druckluft gewährleistet, und erlaubt daneben ein mittiges Angreifen der Schraube am Gegenstück, das einem Verkanten des Gegenstücks beim Anziehen der Schraube entgegenwirkt. Zusätzlich kann durch die Ausbildung von Endstück und Gegenstück im Bereich.des Druckluftkanals ein nicht lagerichtiges Zusammenfügen der Teile des Abschlußelementes verhindert werden.A closure element according to claim 4 provides sufficient space for the compressed air channel, which ensures the necessary flow of compressed air, and allows next to a central engagement of the screw on the counterpart, which counteracts a tilting of the counterpart when tightening the screw. In addition, can be prevented by the formation of tail and counterpart in the Bereich.des compressed air channel a non-correct assembly of the parts of the closure element.

Durch das Einsetzen eines Verbindungsrohres in die vom Druckluftkanal gebildete stirnseitige Öffnung des Abschlußelementes ist der Drucklufttransport zwischen zwei Mehrkantrohren auf einfache Weise gewährleistet.By inserting a connecting pipe in the end opening of the closure element formed by the compressed air channel, the compressed air transport between two polygonal pipes is ensured in a simple manner.

Ein Abschlußelement gemäß Anspruch 6 oder 7 gewährleistet eine ausreichende und sichere Dichtwirkung.A closure element according to claim 6 or 7 ensures a sufficient and secure sealing effect.

Ein Abschlußelement gemäß Anspruch 8 ist universell für verschiedene Ausführungen von Stützen beziehungsweise Stanzen geeignet.A closure element according to claim 8 is universally suitable for various types of supports or punches.

Ein beidseitiges Stützprofil an der Aussparung des Abschlußelementes wirkt einer Verformung des Hohlprofils, selbst bei überhöhtem Anzugsmoment der Befestigungsschrauben, entgegen.A two-sided support profile on the recess of the closure element counteracts deformation of the hollow profile, even with excessive tightening torque of the mounting screws.

Das Abschlußelement ist so ausgeführt, daß es den Innenraum des Mehrkantrohres gegen die Aussparung abdichtet. Dadurch sind die Befestigungsstellen des Mehrkantrohrstücks in einem Bereich des Abschlußelementes angeordnet, der nicht druckluftführend ist. Die Öffnungen im Mehrkantrohr, durch die Befestigungsschrauben einer Schraubverbindung zwischen Mehrkantrohr und Maschine führen, müssen nicht abgedichtet werden. Form und Lage der Aussparung gewährleistet eine ausreichende Versteifung des Endes des Mehrkantrohres.The closure element is designed so that it seals the interior of the polygonal tube against the recess. As a result, the fastening points of the polygonal tubular piece are arranged in a region of the closure element which is not compressed air-conducting. The openings in the polygonal pipe, through which the fastening screws of a screw connection between the polygonal pipe and the machine lead, need not be sealed. The shape and position of the recess ensures sufficient stiffening of the end of the polygonal tube.

Das erfindungsgemäße Abschlußelement dichtet das Innere des Mehrkantrohrs sicher und langzeitstabil ab. Gleichzeitig mit der Dichtwirkung läßt sich das Abschlußelement an seiner Position gegen den im Inneren des Mehrkantrohrs herrschenden Luftdruck ohne zusätzliche Hilfsmittel fixieren. Eine gegebenenfalls notwendige Reparatur eines die Tragestange bildenden Mehrkantrohrs ist auf einfache Weise mit geringem Demontage- und Montageaufwand auch dann möglich, wenn das Mehrkantrohr als Teil einer Tragstange zwischen anderen Mehrkantrohren eingebaut ist.The closure element according to the invention seals the interior of the polygonal tube safely and with long-term stability. Simultaneously with the sealing effect, the closure element can be fixed in its position against the ruling in the interior of the polygonal tube air pressure without additional aids. Any necessary repair of the support rod forming polygonal tube is possible in a simple manner with low disassembly and assembly effort even when the polygonal tube is installed as part of a support rod between other polygonal tubes.

Weitere Einzelheiten der Erfindung sind dem anhand der Figuren erläuterten Ausführungsbeispiel entnehmbar.Further details of the invention are the embodiment explained with reference to the figures removable.

Es zeigt:

Fig. 1
die Einzelteile eines Abschlußelementes vor dem Zusammenbau, in perspektivischer Darstellung,
Fig. 2
die Teile des Abschlußelementes der Figur 1, teilweise im Schnitt,
Fig. 3
einen Schnitt durch den Endbereich von zwei Mehrkantrohren mit jeweils einem Abschlußelement und einem Verbindungsrohrstück mit dem Schnittverlauf A-A aus Fig. 1.
It shows:
Fig. 1
the individual parts of a closure element before assembly, in perspective,
Fig. 2
the parts of the closure element of the FIG. 1 , partly in section,
Fig. 3
a section through the end of two polygonal tubes, each with a closure element and a connecting pipe section with the cutting AA Fig. 1 ,

Das Abschlußelement 1 umfaßt ein Endstück 2, ein Dichtelement 3, ein Gegenstück 4, eine Schraube 5 und eine Dichtscheibe 6. Das Endstück 2 weist einen Führungsabschnitt 7 auf, dessen Außenprofil dem Innenprofil des in Figur 1 gestrichelt dargestellten Mehrkantrohres 8 angepaßt ist. Das Mehrkantrohr 8 ist als Vierkantprofil ausgebildet. Dem Führungsabschnitt 7 schließt sich ein Dichtabschnitt 9 mit formgleichem Außenprofil an, wobei die Breite und Höhe des Außenprofils des Dichtabschnitts 9 geringer ausgebildet ist als die Breite und Höhe des Führungsabschnitts 7. An dem Ende des Endstücks 2, das dem Dichtabschnitt 9 gegenüberliegt, ist ein Anschlag 10 ausgebildet, der mit der Stirnfläche 11 des Mehrkantrohres 8 zusammenwirkt und ein über die erwünschte Position hinausgehendes Einziehen oder Eindrücken des Abschlußelementes 1 in das Mehrkantrohr 8 verhindert. Der Führungsabschnitt 7 weist eine Aussparung 12 auf. Durch diese Aussparung 12 und die Bohrungen 13 greift eine aus Vereinfachungsgründen nicht dargestellte Befestigungsschraube hindurch, mit der das Mehrkantrohr 8 an der Stütze beziehungsweise Stanze befestigt wird. Beidseitig der Aussparung 12 ist ein Stützprofil 14, 15 ausgebildet, das einer Verformung des hohlen Mehrkantrohres 8 entgegenwirkt. Die Aussparung 12 im Endstück 2 für die Befestigungsschraube ist ausreichend groß bemessen, um universell für verschiedene von der Ausführung der Stanzen abhängige Schraubengrößen und -positionen geeignet und einsetzbar zu sein. Der Anschlag 10 weist mittig die Mündung des Zuführkanals 16 für die Schraube 5 und außermittig die Mündung des Verbindungskanals 17 für die Druckluftführung auf.The end element 1 comprises an end piece 2, a sealing element 3, a counterpart 4, a screw 5 and a sealing washer 6. The end piece 2 has a guide portion 7, the outer profile of the inner profile of in FIG. 1 dashed polygonal pipe 8 is adapted. The polygonal tube 8 is formed as a square profile. The guide portion 7 is followed by a sealing portion 9 with the same outer profile profile, wherein the width and height of the outer profile of the sealing portion 9 is formed smaller than the width and height of the guide portion 7. At the end of the end piece 2, which is opposite the sealing portion 9, is a Stop 10 is formed, which cooperates with the end face 11 of the polygonal tube 8 and beyond the desired position beyond pulling or pushing the closure element 1 in the polygonal tube 8 is prevented. The guide section 7 has a recess 12. Through this recess 12 and the holes 13 engages a fastening screw, not shown for reasons of simplification, with which the polygonal tube 8 is attached to the support or punch. On both sides of the recess 12, a support profile 14, 15 is formed, the a deformation of the hollow polygonal tube 8 counteracts. The recess 12 in the end piece 2 for the fastening screw is dimensioned sufficiently large to be universally suitable and usable for different depending on the execution of the punch screw sizes and positions. The stop 10 has the center of the mouth of the feed channel 16 for the screw 5 and off-center the mouth of the connecting channel 17 for the compressed air guide.

Die Profilform des Dichtelementes 3 entspricht dem Mehrkantrohr 8 und dem Dichtabschnitt 9, wobei das Innenprofil des Dichtelementes 3 dem Außenprofil des Dichtabschnitts 9 und das Außenprofil des Dichtelements 3 dem Innenprofil des Mehrkantrohres 8 angepaßt ist. Das Dichtelement 3 besteht aus Gummi. Die Wandstärke T des Dichtelementes 3 ist geringfügig kleiner als der Abstand, der beim in das Mehrkantrohr 8 eingesetzten Abschlußelement 1 jeweils zwischen Innenseite des Mehrkantrohres 8 und der Außenseite des Führungsabschnitts 7 besteht. Die Länge L des Dichtelementes 3 beträgt ein Mehrfaches der Wandstärke T und ist so ausgelegt, daß das Gegenstück 4 das Dichtelement 3 ausreichend mit axialem Druck beaufschlagen kann.The profile shape of the sealing element 3 corresponds to the polygonal tube 8 and the sealing portion 9, wherein the inner profile of the sealing element 3, the outer profile of the sealing portion 9 and the outer profile of the sealing element 3 is adapted to the inner profile of the polygonal tube 8. The sealing element 3 is made of rubber. The wall thickness T of the sealing element 3 is slightly smaller than the distance between the inner side of the polygonal tube 8 and the outer side of the guide section 7 in the case of the terminating element 1 inserted into the polygonal tube 8. The length L of the sealing element 3 is a multiple of the wall thickness T and is designed so that the counterpart 4, the sealing element 3 can apply sufficient axial pressure.

Das Gegenstück 4 umfaßt ein Hohlprofil 18 mit der gleichen Profilform wie das Dichtelement 3 und wird an einem Ende durch die in Fig. 2 erkennbare Rückwand 19 abgeschlossen. Die Rückwand 19 weist nach innen gerichtet, ein Stützelement 20 und ein Kanalelement 21 auf. Das Hohlprofil 18 springt mit seinem Rand 22 gegenüber dem Stützelement 20 vor. Das Kanalelement 21 ragt noch über den Rand 22 hinaus. Das Gegenstück 4 läßt sich nur dann mit dem Endstück 2 passend zusammenfügen, wenn das etwas vorstehende Kanalelement 21 die richtige Lage einnimmt.The counterpart 4 comprises a hollow profile 18 with the same profile shape as the sealing element 3 and is at one end by the in Fig. 2 recognizable rear wall 19 completed. The rear wall 19 has inwardly directed, a support member 20 and a channel member 21. The hollow profile 18 projects with its edge 22 relative to the support member 20. The channel element 21 still protrudes beyond the edge 22. The counterpart 4 can only fit together with the tail 2, if the slightly projecting channel element 21 occupies the correct position.

Die richtige Lage des Kanalelementes 21 ist im in Figur 1 dargestellten Ausführungsbeispiel oben links im Gegenstück 4. Damit ist das notwendige Durchströmen der Druckluft sichergestellt. Durch die Rückwand 19 und das Stützelement 20 verläuft mittig eine Bohrung 23, in die ein Gewinde eingeformt ist. Sowohl das Endstück 2 als auch das Gegenstück 4 bestehen aus Zink-Druckguß.The correct position of the channel element 21 is in FIG. 1 illustrated embodiment, top left in the counterpart 4. Thus, the necessary flow through the compressed air is ensured. Through the rear wall 19 and the support member 20 extends centrally a bore 23 into which a thread is formed. Both the end piece 2 and the counterpart 4 are made of zinc die-cast.

Der Schnittdarstellung der Figur 2 sind weitere Einzelheiten der Ausbildung des Abschlußelementes 1 zu entnehmen. Der Zuführkanal 16 geht im Inneren des Endstücks 2 auf einen kleineren Durchmesser über, wobei der Übergang auf den kleineren Durchmesser des Zuführkanals 16 als Auflage 24 ausgeführt ist. Der Verbindungskanal 17 geht in einen Druckluftkanal 25 über, der einen kleineren wirksamen Querschnitt als der Verbindungskanal 17 aufweist.The sectional view of FIG. 2 Further details of the design of the closure element 1 can be seen. The feed channel 16 merges in the interior of the end piece 2 to a smaller diameter, wherein the transition to the smaller diameter of the feed channel 16 is designed as a support 24. The connecting channel 17 merges into a compressed air channel 25, which has a smaller effective cross section than the connecting channel 17.

Am Gegenstück 4 ist die Durchlaßöffnung 26 für die Druckluft erkennbar. Das Kanalelement 21 bildet einen Teil der Verlängerung des Druckluftkanals 25.At the counterpart 4, the passage opening 26 can be seen for the compressed air. The channel element 21 forms part of the extension of the compressed air channel 25.

Beim Zusammenbau des Abschlußelementes 1 wird zunächst das Dichtelement 3 auf den Dichtabschnitt 9 des Endstücks 2 bis zum Führungsabschnitt 7 aufgeschoben. Anschließend wird die Schraube 5 zusammen mit der Dichtscheibe 6 in den Zuführkanal 16 eingeführt, wobei die Dichtscheibe 6 auf der Auflage 24 angelegt wird. Das Ende der Schraube wird in die mit Gewinde versehene Bohrung 23 des Gegenstücks 4 nur so weit eingeschraubt, daß sie im Gewinde faßt und daß das Gegenstück 4 noch keinen axialen Druck auf das Dichtelement 3 ausübt.When assembling the closure element 1, the sealing element 3 is first pushed onto the sealing portion 9 of the end piece 2 to the guide portion 7. Subsequently, the screw 5 is inserted together with the sealing washer 6 in the feed channel 16, wherein the sealing washer 6 is placed on the support 24. The end of the screw is screwed into the threaded bore 23 of the counterpart 4 only so far that it grasps in the thread and that the counterpart 4 still exerts no axial pressure on the sealing element 3.

Das auf diese Weise vormontierte Abschlußelement 1 wird in das Ende des Mehrkantrohrs 8 bis zum Anschlag 10 eingeschoben. Anschließend wird die Schraube 5, deren Kopf einen Innensechskant 27 aufweist, so angezogen, daß das Endstück 2 mit seinem Rand 22 axial auf das Dichtelement 3 Druck ausübt. Dadurch legt sich das Dichtelement 3 an die Innenseite des Mehrkantrohres 8 an, fixiert die Position des Abschlußelementes 1 gegen den im Inneren des Mehrkantrohres 8 auftretenden Luftdruck und dichtet zwischen Mehrkantrohr 8 und Endstück 2 luftdicht ab.The pre-assembled in this way closure element 1 is inserted into the end of the polygonal tube 8 to the stop 10. Subsequently, the screw 5, the head has a hexagon socket 27, tightened so that the end piece 2 with its edge 22 axially exerts pressure on the sealing element 3. As a result, the sealing element 3 applies to the inside of the polygonal tube 8, fixes the position of the closure element 1 against the air pressure occurring in the interior of the polygonal tube 8 and seals airtight between polygonal tube 8 and end piece 2.

Ein Abschlußelement 1 in diesem Zustand ist in Figur 3 dargestellt. Die Druckluft kann das Abschlußelement 1 von der Durchlaßöffnung 26 über den Druckluftkanal 25 bis zum Verbindungskanal 17 oder in Gegenrichtung durchströmen. Dem Mehrkantrohr 8 schließt sich mit geringem Abstand ein benachbartes Mehrkantrohr 28 an. Das in das Mehrkantrohr 28 eingefügte Abschlußelement 29 ist spiegelbildlich zum Abschlußelement 1 ausgebildet. Das Abschlußelement 1 und das Abschlußelement 29 sind durch ein Verbindungsrohr 30 miteinander verbunden, das mit seinen Enden in den Verbindungskanal 17 und den Verbindungskanal 31 eingesetzt ist. Damit ist ein ungehinderter Fluß der Druckluft zwischen Mehrkantrohr 8 und Mehrkantrohr 28 durch die Druckluftkanäle 25 und 33 möglich. Die Abdichtung des Verbindungsrohres 30 erfolgt mittels O-Ring-Dichtungen 32, wie aus der DE 198 30 048 A1 bekannt.An end element 1 in this state is in FIG. 3 shown. The compressed air can flow through the closure element 1 from the passage opening 26 via the compressed air channel 25 to the connecting channel 17 or in the opposite direction. The polygonal tube 8 is adjoined at a small distance by an adjacent polygonal tube 28. The inserted into the polygonal tube 28 terminating element 29 is formed in mirror image to the closure element 1. The closure element 1 and the closure element 29 are connected to each other by a connecting tube 30 which is inserted with its ends in the connecting channel 17 and the connecting channel 31. For an unobstructed flow of compressed air between polygonal tube 8 and polygonal tube 28 through the compressed air channels 25 and 33 is possible. The sealing of the connecting tube 30 by means of O-ring seals 32, as shown in DE 198 30 048 A1 known.

Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt. Alternative Ausbildungen, insbesondere des Endstücks und des Gegenstücks, sind im Rahmen der Erfindung möglich.The invention is not limited to the described embodiments. Alternative embodiments, in particular of the end piece and the counterpart, are possible within the scope of the invention.

Claims (11)

  1. Closing element (1, 29) for polygonal tubes (8, 28) guiding compressed air on spinning machines, which is inserted in a sealing manner in the end of the polygonal tube and comprises an elastic sealing element (3),
    characterised in that the closing element (1, 29) apart from the sealing element (3) comprises an end piece (2) and a counterpart (4), wherein the sealing element (3) is arranged between the end piece (2) and the counterpart (4), and in that the closing element (1, 29) is designed so that in its inserted position it pressurises the sealing element (3) axially, whereby the latter becomes deformed so that it seals the closing element (1, 29) relative to the polygonal tube (8, 28).
  2. Closing element according to claim 1, characterised in that the closing element (1, 29) is designed so that compressed air is allowed to flow from the polygonal tube (8; 28) through the closing element (1, 29) into an adjacent polygonal tube (28; 8).
  3. Closing element according to claim 1 or 2, characterised in that the sealing element (3) is expanded radially by the relative approach of the end piece (2) and counterpart (4) towards one another.
  4. Closing element according to claim 3, characterised in that the end piece (2) and the counterpart (4) are joined together by means of a threaded screw (5) that extends through the sealing element (3), and in that the end piece (2) and the counterpart (4) load the sealing element (3) with axial pressure on tightening the threaded screw (5).
  5. Closing element according to one of claims 3 or 4, characterised in that the end piece (2) and the counterpart (4) are designed so that they jointly form a compressed air channel (25, 33) which extends off-centre through the closing element (1, 29).
  6. Closing element according to claim 5, characterised in that a connecting tube (30) can be inserted into the opening of the closing element (1, 29) formed on the face side by the compressed air channel (25, 33).
  7. Closing element according to one of claims 1 to 6, characterised in that the length L of the sealing element (3) amounts to at least 1.5 times its wall thickness T.
  8. Closing element according to one of claims 1 to 7, characterised in that the sealing element (3) is made of rubber.
  9. Closing element according to one of claims 1 to 8, characterised in that the end piece (2) comprises a recess (12), which is designed for receiving different fastening screws.
  10. Closing element according to claim 9, characterised in that a support profile (44, 45) is formed on both sides of the recess (12).
  11. Closing element according to one of claims 1 to 10, characterised in that the polygonal tube (8, 28) is designed as a support rod for pneumatically pressurisable upper roller support and loading arms on the drawing frames of spinning machines.
EP03767658A 2003-01-25 2003-11-26 Closing element for polygonal tubes guiding compressed air on a spinning frame Expired - Lifetime EP1590514B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10302880 2003-01-25
DE10302880A DE10302880A1 (en) 2003-01-25 2003-01-25 Closing element for compressed air-carrying polygonal tubes
PCT/EP2003/013263 WO2004067821A1 (en) 2003-01-25 2003-11-26 Closing element for polygonal tubes guiding compressed air on a spinning frame

Publications (2)

Publication Number Publication Date
EP1590514A1 EP1590514A1 (en) 2005-11-02
EP1590514B1 true EP1590514B1 (en) 2008-06-11

Family

ID=32667824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767658A Expired - Lifetime EP1590514B1 (en) 2003-01-25 2003-11-26 Closing element for polygonal tubes guiding compressed air on a spinning frame

Country Status (9)

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US (1) US7287367B2 (en)
EP (1) EP1590514B1 (en)
JP (1) JP2006513336A (en)
KR (1) KR20050092441A (en)
CN (1) CN100436673C (en)
DE (2) DE10302880A1 (en)
ES (1) ES2307986T3 (en)
TW (1) TWI303678B (en)
WO (1) WO2004067821A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036664A1 (en) * 2008-08-06 2010-02-11 Oerlikon Textile Components Gmbh Top roller carrying and loading arm
DE102012203193A1 (en) * 2012-03-01 2013-09-05 Dr. Johannes Heidenhain Gmbh Length measuring device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315305C2 (en) * 1983-04-27 1986-01-30 SKF GmbH, 8720 Schweinfurt Drafting system with central loading and unloading
DE3718619C3 (en) * 1987-06-03 1995-03-23 Thyssen Polymer Gmbh Sealing plug
DE3732132A1 (en) * 1987-09-24 1989-04-13 Skf Textilmasch Komponenten Spinning machine with roller-type drawframes
US5673549A (en) * 1994-08-26 1997-10-07 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
DE29515398U1 (en) * 1995-09-18 1995-11-23 Siemens Ag Locking device
DE19829403A1 (en) * 1998-07-01 2000-01-05 Texparts Gmbh Drawing system for spinning machines
DE19830048C2 (en) * 1998-07-04 2000-10-19 Texparts Gmbh Spinning machine with pneumatically loaded upper roller support and loading arms
DE19906253A1 (en) * 1999-02-17 2000-08-31 Oskar Lehmann Gmbh & Co Kg Cap for blocking ends of tubes which are polygonal in cross-section has portion with projecting plates which is inserted into tube and visible part which is roof-shaped.
DE10061832C2 (en) * 2000-12-12 2002-12-19 Helmut Bardenhagen Plug for inside pipe sealing
US20050183244A1 (en) * 2002-10-24 2005-08-25 Texparts Gmbh Roller mounting assembly for textile drafting system

Also Published As

Publication number Publication date
TWI303678B (en) 2008-12-01
WO2004067821A1 (en) 2004-08-12
CN1742122A (en) 2006-03-01
DE10302880A1 (en) 2004-08-05
US7287367B2 (en) 2007-10-30
EP1590514A1 (en) 2005-11-02
US20050229578A1 (en) 2005-10-20
KR20050092441A (en) 2005-09-21
JP2006513336A (en) 2006-04-20
TW200506119A (en) 2005-02-16
ES2307986T3 (en) 2008-12-01
DE50309987D1 (en) 2008-07-24
CN100436673C (en) 2008-11-26

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