EP1993819A1 - Tyre building drum - Google Patents

Tyre building drum

Info

Publication number
EP1993819A1
EP1993819A1 EP07722038A EP07722038A EP1993819A1 EP 1993819 A1 EP1993819 A1 EP 1993819A1 EP 07722038 A EP07722038 A EP 07722038A EP 07722038 A EP07722038 A EP 07722038A EP 1993819 A1 EP1993819 A1 EP 1993819A1
Authority
EP
European Patent Office
Prior art keywords
building drum
drum
tire building
roller arms
tyre building
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.)
Withdrawn
Application number
EP07722038A
Other languages
German (de)
French (fr)
Inventor
Eggert Oldenburg
Ulrich Busch
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.)
Harburg Freudenberger Maschinenbau GmbH
Original Assignee
Harburg Freudenberger Maschinenbau GmbH
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 Harburg Freudenberger Maschinenbau GmbH filed Critical Harburg Freudenberger Maschinenbau GmbH
Publication of EP1993819A1 publication Critical patent/EP1993819A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3207—Positioning the beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3221—Folding over means, e.g. bladders or rigid arms
    • B29D2030/3264—Folding over means, e.g. bladders or rigid arms using radially expandable, contractible mechanical means, e.g. circumferentially spaced arms, spring rollers, cages

Definitions

  • the invention relates to a tire building drum with layer transfer for the production of unvulcanized tire blanks.
  • the layer envelope has a plurality of roller arms, which are coupled to a drive which is arranged outside of the tire building drum.
  • Fig. 1 is a schemati Service longitudinal section through a tire building drum with mechanical layer envelope.
  • a building drum shown in Fig. L consists of a left (3) and right drum half (4), which in turn are mounted on a drum shaft (6).
  • the two drum halves (3, 4) in conjunction with a drum center part (5) and integrated core clamping elements (10) form a cylindrical round body.
  • the individual carcass layers (12) are processed and formed into a green tire.
  • Mechanical bead supports (9) that extend radially stabilize the bead area inward, in conjunction with the core tension elements.
  • Both drum halves (3, 4) are locked on the slotted drum shaft (6) with an internal left / right conventional spindle (11) via two nuts (8).
  • the axial adjustment of the drum halves (3, 4) is generated by a motor which rotates the spindle (11) and generates the axial movement.
  • Kernspann- elements 10 and mechanical bead supports the building materials for the production of a carcass are applied. Thereafter, with a segmented annular Kernsetzvorraum (1), two cores are placed on the drum body (13) (left / right).
  • the device consists of a symmetrical left and right part and is part of a transfer ring.
  • the core setting device (1) is in turn mounted on spindles on the left / right, which can be moved axially by servo motors precisely and programmatically. After setting the cores, the left and right core setting devices (1) move outward so that they are above the clutches (14). The combined Kernsetz- and axial drive segments (1) now proceed radially inwardly into the clutches (14). Thereby, the servo-controlled connection between the Kernsetzvorides (1) and the roller arms (2) is made.
  • the distance of the cores (13) is reduced by the rotation of the spindle (11) within the drum shaft.
  • the bead support (9) is radially extended. and forms a stable plant for the following layer handling process.
  • a plurality of roller arms (2) which are arranged very tightly on the left and right drum halves (3, 4), lift the carcass material resting on them.
  • roller arms (2) With increasing reduction of the core spacings (13) and simultaneous feeding of compressed air into the bulging carcass (12), the roller arms (2) are guided by the axial movement to the outside.
  • the rollers of the left and right arms (2) roll, absolutely symmetrically, the carcass material (15) to the forming carcass (12) (green tire).
  • the outwardly directed roller arms (2) form in the roller head area increasing distances, which in turn are filled by a double roller mechanism (2.1).
  • the tire building drum is provided with an external, on-demand, servo-controlled core setting device.
  • an absolute synchronous operation of the roller systems of both drum halves is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

The invention relates to a tyre building drum (3, 4, 5) with folded sections for producing unvulcanized tyre blanks. A plurality of roller arms (2) of the folded sections are coupled to a drive (1, 14) which is disposed at the exterior of the tyre building drum.

Description

Reifenaufbautrommel Tire building drum
Die Erfindung betrifft eine Reifenaufbautrommel mit Lagenumschlag zur Herstellung von unvulkanisierten Rei- fenrohlingen.The invention relates to a tire building drum with layer transfer for the production of unvulcanized tire blanks.
Bei der Herstellung von unvulkanisierten Reifenrohlingen werden typischerweise Luftbälge zur Bereitstellung der erforderlichen Andruckkräfte beim Lagenumschlag verwendet. Derartige Trommeln sind relativ teuer und machen in vorgegebenen zyklischen Abständen eine Auswechslung der Luftbälge erforderlich. Bekannt ist es aus der EP-A 1 001 876 auch bereits, mechanische Wulstumschlagvorrichtungen zur realisieren, bei denen der erforderliche Andruck unter Verwendung einer Vielzahl von einzelnen Hebeln erreicht wird, die ähnlich zu den Streben eines Regenschirmes angeordnet sind. Diese mechanischen Vorrichtungen weisen gegenüber einer Verwendung von Luftbälgen eine erhöhte Standzeit auf, ermöglichen jedoch keine symmetrischen Fahrbewegungen. Aufgabe der vorliegenden Erfindung ist es, eine Reifen- aufbautrommel der einleitend genannten Art derart zu konstruieren, daß die Durchführung von symmetrischen Verfahrbewegungen unterstützt wird.In the manufacture of unvulcanized green blanks, air bladders are typically used to provide the necessary compressive forces during sheet handling. Such drums are relatively expensive and require a replacement of the bellows at predetermined cyclic intervals. It is also known from EP-A 1 001 876 already to realize mechanical Wulstumschlagvorrichtungen in which the required pressure is achieved using a plurality of individual levers, which are arranged similar to the struts of an umbrella. These mechanical devices have an increased service life compared to a use of bellows, but do not allow symmetrical driving movements. The object of the present invention is to construct a tire building drum of the aforementioned type such that the implementation of symmetrical movements is supported.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Lagenumschlag eine Mehrzahl von Rollenarmen aufweist, die mit einem Antrieb gekoppelt sind, der außerhalb der Reifenaufbautrommel angeordnet ist.This object is achieved in that the layer envelope has a plurality of roller arms, which are coupled to a drive which is arranged outside of the tire building drum.
Durch die Anordnung des Antriebes außerhalb der Reifen- aufbautrommel ist es möglich, die Rollenarme über einen sogenannten Pusher zu betätigen, der absolut symmetrische Verfahrbewegungen vorgibt. Es können hierdurch Reifenrohlinge mit einer sehr hohen gleichmäßigen Qualität produziert werden.The arrangement of the drive outside the tire building drum, it is possible to operate the roller arms via a so-called pusher, which dictates absolutely symmetrical movements. It can thereby produce green tires with a very high uniform quality.
In den Zeichnungen sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigt:In the drawings, embodiments of the invention are shown schematically. It shows:
Fig. 1 einen schematisehen Längsschnitt durch eine Reifenaufbautrommel mit mechanischem Lagenumschlag.Fig. 1 is a schematisehen longitudinal section through a tire building drum with mechanical layer envelope.
Eine in Fig. l dargestellte Aufbautrommel besteht aus je einer linken (3) und rechten Trommelhälfte (4), die wiederum auf einer Trommelwelle (6) gelagert sind. Die beiden Trommelhälften (3, 4) bilden in Verbindung mit einem Trommel- Mittelteil (5) und integrierten Kernspann-Elementen (10) einen zylindrischen Rundkörper. Auf diesem Rundkörper werden die einzelnen Karkassenlagen (12) verarbeitet und zu einem Reifenrohling geformt. Mechanische Wulststützen (9) , die radial ausfahren, stabilisieren den Wulstbereich nach innen, in Verbindung mit den Kernspann-Elementen. Beide Trommelhälften (3, 4) sind auf der geschlitzten Trommelwelle (6) mit einer innen liegenden links/rechts gängigen Spindel (11) über zwei Muttern (8) verriegelt. Die Axialver- stellung bei den Trommelhälften (3, 4) wird mit einem Motor erzeugt, der die Spindel (11) dreht und die Axialbewegung erzeugt.A building drum shown in Fig. L consists of a left (3) and right drum half (4), which in turn are mounted on a drum shaft (6). The two drum halves (3, 4) in conjunction with a drum center part (5) and integrated core clamping elements (10) form a cylindrical round body. On this round body, the individual carcass layers (12) are processed and formed into a green tire. Mechanical bead supports (9) that extend radially stabilize the bead area inward, in conjunction with the core tension elements. Both drum halves (3, 4) are locked on the slotted drum shaft (6) with an internal left / right conventional spindle (11) via two nuts (8). The axial adjustment of the drum halves (3, 4) is generated by a motor which rotates the spindle (11) and generates the axial movement.
Ein typischer Funktionsablauf wird nachfolgend beschrieben. Auf den zylindrischen Trommelkörper (3, 4, 5) mit eingefahrenen Rollenarmen (2) , Kernspann- Elementen (10) und mechanischen Wulststützen werden die Aufbaumaterialien zur Herstellung einer Karkasse aufgebracht. Danach werden mit einer segmentierten, ringförmigen Kernsetzvorrichtung (1) zwei Kerne auf den Trommelkörper (13) (links/rechts) gesetzt. Die Vorrichtung besteht aus einem symmetrischen linken und rechten Teil und ist Bestandteil eines Transferrings.A typical operation will be described below. On the cylindrical drum body (3, 4, 5) with retracted roller arms (2), Kernspann- elements (10) and mechanical bead supports the building materials for the production of a carcass are applied. Thereafter, with a segmented annular Kernsetzvorrichtung (1), two cores are placed on the drum body (13) (left / right). The device consists of a symmetrical left and right part and is part of a transfer ring.
Die Kernsetzvorrichtung (1) ist wiederum auf links/rechts gängigen Spindeln gelagert, die über Ser- vomotore präzise und programmgesteuert, axial verfahren kann. Nach dem Setzen der Kerne fahren die linke und rechte Kernsetzvorrichtung (1) nach außen, so daß sie über den Kupplungen (14) stehen. Die kombinierten Kernsetz- und Axial-Antriebssegmente (1) verfahren nun radial nach innen in die Kupplungen (14) . Dadurch ist die servogesteuerte Verbindung zwischen der Kernsetzvorrichtung (1) und den Rollenarmen (2) hergestellt.The core setting device (1) is in turn mounted on spindles on the left / right, which can be moved axially by servo motors precisely and programmatically. After setting the cores, the left and right core setting devices (1) move outward so that they are above the clutches (14). The combined Kernsetz- and axial drive segments (1) now proceed radially inwardly into the clutches (14). Thereby, the servo-controlled connection between the Kernsetzvorrichtung (1) and the roller arms (2) is made.
Der Abstand der Kerne (13) wird durch die Drehung der Spindel (11) innerhalb der Trommelwelle reduziert. Gleichzeitig wird die Wulststütze (9) radial ausgefah- ren und bildet eine stabile Anlage für den folgenden Lagenumschlag-Prozess. Eine Vielzahl von Rollenarmen (2) , die sehr eng auf der linken- und rechten Trommel- hälfte (3, 4) angeordnet sind, heben das auf ihnen liegende Karkassenmaterial an.The distance of the cores (13) is reduced by the rotation of the spindle (11) within the drum shaft. At the same time, the bead support (9) is radially extended. and forms a stable plant for the following layer handling process. A plurality of roller arms (2), which are arranged very tightly on the left and right drum halves (3, 4), lift the carcass material resting on them.
Mit zunehmender Reduzierung der Kernabstände (13) und gleichzeitiger Einspeisung von Druckluft in die sich aufwölbende Karkasse (12) werden die Rollenarme (2) , über die Axialbewegung nach außen gelenkt. Die Rollen der linken und rechten Arme (2) verrollen, absolut symmetrisch, das Karkassenmaterial (15) an die sich bildende Karkasse (12) (Reifenrohling) . Die nach außen gelenkten Rollenarme (2) bilden im Rollenkopfbereich sich vergrößernde Abstände, die wiederum durch eine Doppelrollenmechanik (2.1) ausgefüllt werden.With increasing reduction of the core spacings (13) and simultaneous feeding of compressed air into the bulging carcass (12), the roller arms (2) are guided by the axial movement to the outside. The rollers of the left and right arms (2) roll, absolutely symmetrically, the carcass material (15) to the forming carcass (12) (green tire). The outwardly directed roller arms (2) form in the roller head area increasing distances, which in turn are filled by a double roller mechanism (2.1).
Hierdurch wird eine flächige Anrollung beim Lagenumschlag erreicht und somit erfolgt eine Vermeidung von Lufteinschlüssen. Nach Vollendung des Lagenumschlages werden von externer Seite weitere Rohlingskomponenten zugeführt.As a result, a surface curl is achieved during the layer envelope and thus there is an avoidance of air inclusions. After completion of the layer envelope, further blank components are supplied from the external side.
Die Reifenaufbautrommel ist mit einer externen, bei Bedarf angekuppelten, servogesteuerten Kernsetzvorrichtung versehen. Hierdurch wird ein absoluter Synchronlauf der Rollensysteme beider Trommelhälften gewährleistet. Gleichzeitig gibt es durch den motorischen Synchronlauf keinerlei "stip-slic-Effekte" oder schwierige/instabile Einregelungen einer pneumatischen Rollenhebelbetätigung. Folglich ist für den Anwender eine deutlich verbesserte Rundlaufqualität/Uniformity zu erwarten. Insbesondere hinsichtlich besserer Konizität und Seitenkraftschwankungen. The tire building drum is provided with an external, on-demand, servo-controlled core setting device. As a result, an absolute synchronous operation of the roller systems of both drum halves is ensured. At the same time there are no "stip-slic effects" or difficult / unstable regulations of a pneumatic roller lever actuation due to the synchronous motor running. Consequently, a significantly improved concentricity / uniformity is to be expected for the user. Especially with regard to better taper and lateral force variations.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Reifenaufbautrommel mit Lagenumschlag zur Herstellung von unvulkanisierten Reifenrohlingen, dadurch gekennzeichnet, daß der Lagerumschlag eine Mehrzahl von Rollenarmen aufweist, die mit einem Antrieb gekoppelt sind, der außerhalb der Reifenaufbautrommel angeordnet ist.A tire building drum with layer transfer for producing unvulcanized green tires, characterized in that the storage envelope comprises a plurality of roller arms coupled to a drive disposed outside the tire building drum.
2. Reifenaufbautrommel nach Anspruch 1, dadurch gekennzeichnet, daß die Rollenarme mit einem Transferring gekoppelt sind.2. Tire building drum according to claim 1, characterized in that the roller arms are coupled to a transfer ring.
3. Reifenaufbautrommel nach Anspruch 1 oder 2 , dadurch gekennzeichnet, daß die Rollenarme mit einem Servoantrieb gekoppelt sind. 3. tire building drum according to claim 1 or 2, characterized in that the roller arms are coupled to a servo drive.
EP07722038A 2006-03-14 2007-03-13 Tyre building drum Withdrawn EP1993819A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006012026A DE102006012026A1 (en) 2006-03-14 2006-03-14 Tire building drum, for production of unvulcanized preforms, uses roller arms which are connected to external drive to support plies
PCT/DE2007/000465 WO2007110039A1 (en) 2006-03-14 2007-03-13 Tyre building drum

Publications (1)

Publication Number Publication Date
EP1993819A1 true EP1993819A1 (en) 2008-11-26

Family

ID=38212212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722038A Withdrawn EP1993819A1 (en) 2006-03-14 2007-03-13 Tyre building drum

Country Status (6)

Country Link
EP (1) EP1993819A1 (en)
KR (1) KR20080100387A (en)
CN (1) CN101432127A (en)
DE (1) DE102006012026A1 (en)
RU (1) RU2008140530A (en)
WO (1) WO2007110039A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2001604C2 (en) * 2008-05-22 2009-11-24 Vmi Epe Holland Tire building drum for building an unvulcanized tire.
US8770251B2 (en) 2008-05-22 2014-07-08 Vmi Holland B.V. Tyre building drum for building an unvulcanised tyre
DE102011001836A1 (en) * 2011-04-06 2012-10-11 Continental Reifen Deutschland Gmbh Device for producing a vehicle tire
DE102011001837A1 (en) * 2011-04-06 2012-10-11 Continental Reifen Deutschland Gmbh Device for producing a vehicle tire
CN105307845B (en) * 2013-02-22 2018-07-27 哈布尔格-弗罗伊登贝格尔机械工程有限公司 Method and apparatus for manufacturing green tyre
DE102013106027A1 (en) * 2013-06-11 2014-12-24 Continental Reifen Deutschland Gmbh Method for producing a vehicle tire
CN110740858B (en) * 2017-06-16 2022-05-10 哈布尔格-弗罗伊登贝格尔机械工程有限公司 Method and apparatus for manufacturing tyres
DE202018002625U1 (en) * 2017-06-16 2018-07-06 Harburg-Freudenberger Maschinenbau Gmbh Device for producing tires

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1169922A (en) * 1957-03-21 1959-01-07 Dunlop Sa Device for laying the bead wires and folding down the fabrics for the making of pneumatic tire casings
DE1108416B (en) * 1959-05-22 1961-06-08 Dunlop Gummi Cie Ag Deutsche Machine for the flat construction of pneumatic vehicle tires
SU1606344T (en) * 1989-01-23 1990-11-15 Vni K I Oboru Shinnoj Promy Arrangement for working pneumatic tyre cover beads
JP4651885B2 (en) * 2001-09-12 2011-03-16 株式会社ブリヂストン Tire molding drum

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007110039A1 *

Also Published As

Publication number Publication date
RU2008140530A (en) 2010-04-20
CN101432127A (en) 2009-05-13
KR20080100387A (en) 2008-11-17
WO2007110039A1 (en) 2007-10-04
DE102006012026A1 (en) 2007-09-20

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