WO2025016511A1 - Tire-construction machine - Google Patents
Tire-construction machine Download PDFInfo
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- WO2025016511A1 WO2025016511A1 PCT/DE2024/200065 DE2024200065W WO2025016511A1 WO 2025016511 A1 WO2025016511 A1 WO 2025016511A1 DE 2024200065 W DE2024200065 W DE 2024200065W WO 2025016511 A1 WO2025016511 A1 WO 2025016511A1
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- casing
- rolling
- tire
- radially
- drum
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- 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
- B29D30/28—Rolling-down or pressing-down the layers in the building process
Definitions
- the invention relates to a tire building machine with a building drum which has a cylindrical casing in a central region which can be expanded radially relative to the axial ends of the building drum, wherein at least one inner layer and one fabric layer of a tire blank can be applied to the building drum in the course of producing pneumatic vehicle tires, and with a rolling device with two rolling disks which can be moved in opposite directions and parallel to the casing, can be pressed radially against the casing and can be fed radially inwards relative to the casing in the region of the axial ends.
- Such tire building machines are known and are used to first build up a tire blank in the course of manufacturing a pneumatic vehicle tire by feeding the tire's components layer by layer and connecting them on the building drum in order to ultimately form the finished tire blank into the desired pneumatic vehicle tire by vulcanization in subsequent production steps.
- a common manufacturing step involves first applying the future inner layer of the pneumatic vehicle tire to the building drum, followed by at least one fabric layer that serves as a carcass insert. The core packages are then applied to the composite thus formed before further tire components are added.
- DE 2019989A1 describes a rolling device for tire building machines which, in addition to the pair of rolling discs, also has additional pressure rollers which are pivotably connected to the drum axis via a hydraulic or pneumatic drive. This is mechanically very complex and is not suitable for preventing shifts in the fabric layer when the thread path deviates from 90° to the building drum.
- the object of the invention is to propose a tire building machine of the type mentioned at the outset which can be modified in a simple and easy manner to overcome the disadvantages of the prior art.
- the invention proposes the design of a tire building machine according to the features of patent claim 1.
- the solution according to the invention provides that an additional roller is provided on each of the inner sides of the roller discs facing each other, which roller operates independently of the
- the rolling disc is rotatably mounted and can be pressed radially against the casing when the rolling discs are positioned radially inwards relative to the casing.
- the additional roller provided according to the invention and provided on the inner sides of the rolling discs facing each other ensures that, during the rolling of the inner layer and the fabric layer around the shoulder area, i.e. the transition area between the radially expanded casing and the axial ends of the building drum, the fabric layer is clamped in its position relative to the inner layer and the surface of the casing by the additional roller and prevented from shifting.
- edge stitching technology it is possible to use the so-called edge stitching technology even for fabric layers whose thread path deviates significantly from 90° to the building drum, so that improvements in quality, performance and production stability can be achieved.
- the roller discs are each mounted with the associated additional roller on a common axis so as to be independently rotatable, but can be uniformly pressed radially in the direction of the casing or fed beyond it via a corresponding drive.
- the additional rollers are made of hard rubber, with Shore hardnesses A of 70-100 being considered suitable.
- the additional rollers can either be cylindrical or provided with a radius which causes an increasing diameter of the additional roller in the direction of the associated roller disc.
- the diameter of the additional rollers is such that, when pressed against the casing, the associated adjacent roller disc has a distance of 1.5 to 5 mm, preferably about 3 mm, from the circumference of the axial end of the building drum. This ensures that at the time when the additional roller is placed on the expanded casing, the associated roller disc is in the corresponding Distance of 1.5 to 5 mm, preferably 3 mm, above the respective axial end of the building drum, which prevents the inner layer and the overlying fabric layer from being rolled by the rolling disc with the axial end of the building drum. The inner layer and the overlying fabric layer can therefore continue to slide on the axial end and follow the deformation accordingly.
- the rolling discs modified with additional rollers in the manner according to the invention can also be used for all subsequent processing steps in the course of producing a green tire in a manner known per se and without restrictions.
- the invention is also suitable for simple retrofitting to existing tire building machines.
- Figure 1 is a schematic representation of a first embodiment of the invention
- Figure 2 is a schematic representation of a second embodiment of the invention.
- Figure 3 is a schematic representation of a tire building machine
- Figure 4 is a schematic representation of the edge stitching technology according to the state of the art on a tire building machine according to Figure 3;
- Figure 5 is another representation of a tire building machine according to the state of the art.
- Figures 3 to 5 show a highly simplified representation of a tire building machine that is used in the production of a green tire for a pneumatic vehicle tire.
- the tire building machine comprises a substantially cylindrical building drum which is driven in rotation about a central axis R and has a cylindrical casing 10 in its central region and two axial ends 11 spaced apart from one another by the cylindrical casing 10.
- the cylindrical casing 10 is usually made of a rubber material and can be expanded radially relative to the axial ends 11 by applying compressed air as shown.
- the cylindrical casing 10 is initially not subjected to compressed air while the building drum is rotating about the central axis R, so that it is aligned with the axial ends 11.
- the later inner layer 2 is fed in and wound onto the surface of the building drum, followed by a fabric layer 3, which later forms the carcass insert.
- the jacket 10 is pressurized with compressed air and expanded radially so that it has a larger diameter than the axial ends 11.
- the area of the shoulder of the jacket 10, where it merges into the axial ends 11 there is an undefined angular profile of the inner layer 2 and the fabric layer 3, with the angle of departure from the jacket 10 being shown with a in Figure 4.
- the inner layer 2 and the fabric layer 3 can be applied to the radially expanded end region of the casing 10 in each region of the shoulder of the casing 10 via a rolling device of the tire building machine with two rolling disks 4 that can be moved in opposite directions parallel to the casing 10 and pressed radially against the casing 10, and the angle a can be minimized or ideally completely eliminated, which is referred to as edge stitching technology.
- the rolling disc 4 attacks various threads of the fabric layer 3 and a systematic displacement of the fabric insert 3 over the drum shoulder can occur.
- the rolling disk 4 is modified in a first embodiment shown in Figure 1 in such a way that an additional roller 40 is provided on each of the inner sides of the rolling disks 4 facing one another, which additional roller is arranged on a common axis with the rolling disk 4, but the rolling disk 4 and the additional roller 40 are mounted so as to be rotatable independently of one another.
- the positioning and dimensioning of the additional roller 40 for the respective rolling disk 4 is selected such that when the rolling disk 4 is positioned radially inwardly relative to the casing 10 in the direction of the axial end 11, the additional roller 40 rests circumferentially on the shoulder area of the casing 10 and can be pressed there, so that the fabric layer 3 resting on the casing 10 and, if applicable, also the inner layer 2 are clamped between the additional roller 40 and the casing 10, held in place and prevented from moving relative to one another.
- the diameter of the additional roller 40 is dimensioned such that it serves as a stop when pressed against the casing 10 and the adjacent rolling disk 4 has a circumferential distance X of preferably about 3 mm from the axial end 11 of the building drum. In this way, the inner layer 2 and the fabric layer 3 are prevented from being connected to the axial end 11 of the building drum by the rolling disk 4, so that they are still able to slide on the surface of the axial end 11 in accordance with the material flow.
- the additional roller is preferably made of hard rubber with a Shore A hardness of about 70-100 and can have a radius in the embodiment shown in Figure 1 such that the diameter increases in the direction of the associated
- the rolling disk 4 is enlarged in accordance with the course of the inner layer 2 and the fabric layer 3 in the shoulder area of the casing 10.
- the additional roller 40 can be cylindrical.
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- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Reifenaufbaumaschine tire building machine
Beschreibung: Description:
Die Erfindung betrifft eine Reifenaufbaumaschine mit einer Aufbautrommel, die in einem zentralen Bereich einen zylindrischen und gegenüber den axialen Enden der Aufbautrommel radial aufweitbaren Mantel aufweist, wobei auf die Aufbautrommel zumindest eine Innenschicht und eine Gewebelage eines Reifenrohlings im Zuge der Herstellung von Fahrzeugluftreifen aufbringbar sind, und mit einer Anrollvorrichtung mit zwei gegenläufig und parallel zum Mantel verfahrbaren, radial an den Mantel anpressbaren und im Bereich der axialen Enden gegenüber dem Mantel radial einwärts zustellbaren Anrollscheiben. The invention relates to a tire building machine with a building drum which has a cylindrical casing in a central region which can be expanded radially relative to the axial ends of the building drum, wherein at least one inner layer and one fabric layer of a tire blank can be applied to the building drum in the course of producing pneumatic vehicle tires, and with a rolling device with two rolling disks which can be moved in opposite directions and parallel to the casing, can be pressed radially against the casing and can be fed radially inwards relative to the casing in the region of the axial ends.
Derartige Reifenaufbaumaschinen sind bekannt und dienen dazu, im Zuge der Herstellung eines Fahrzeugluftreifens zunächst einen Reifenrohling durch schichtweises Zuführen von Baukomponenten des Reifens und Verbinden derselben auf der Aufbautrommel aufzubauen, um in anschließenden Fertigungsschritten letztlich den fertiggestellten Reifenrohling durch Vulkanisieren zu dem gewünschten Fahrzeugluftreifen auszubilden. Such tire building machines are known and are used to first build up a tire blank in the course of manufacturing a pneumatic vehicle tire by feeding the tire's components layer by layer and connecting them on the building drum in order to ultimately form the finished tire blank into the desired pneumatic vehicle tire by vulcanization in subsequent production steps.
Ein Ausführungsbeispiel einer derartigen Reifenaufbaumaschine ist beispielhaft in der DE 60306376 T2 beschrieben. An embodiment of such a tire building machine is described as an example in DE 60306376 T2.
Ein üblicher Herstellungsschritt besteht darin, auf der Aufbautrommel zunächst die spätere Innenschicht des Fahrzeugluftreifens aufzubringen, gefolgt von mindestens einer als Karkasseinlage dienenden Gewebelage. Auf dem solchermaßen gebildeten Verbund werden dann die Kernpakete aufgebracht, bevor weitere Reifenbauteile zugeführt werden. A common manufacturing step involves first applying the future inner layer of the pneumatic vehicle tire to the building drum, followed by at least one fabric layer that serves as a carcass insert. The core packages are then applied to the composite thus formed before further tire components are added.
Aufgrund der Ausgestaltung der Reifenaufbaumaschine mit einer radial aufweitbaren Aufbautrommel liegen unbestimmte Voraussetzungen für den Kontaktpunkt zwischen Kernpaket und Karkasseinlage vor. Sofern die Anrollvorrichtung dazu eingesetzt wird, im Bereich der axialen Enden der Aufbautrommel gegenüber dem Mantel radial einwärts zugestellt zu werden, wird ein sogenanntes Edge Stitching bewirkt, wodurch dieses unsystematische Verhalten optimiert und im Idealfall vollständig abgestellt werden kann, da die radial einwärts zugestellte Anrollscheibe für einen definierten Verlauf der Innenschicht und der Gewebelage um den aufgeweiteten Mantel sorgt. Dies gilt jedoch nur für Karkassmaterialien, d. h. Gewebelagen mit einem Fadenverlauf von annähernd 90° zur Aufbautrommel. Due to the design of the tire building machine with a radially expandable building drum, there are uncertain requirements for the contact point between the core package and the carcass insert. If the rolling device is used to radially expand the core package in the area of the axial ends of the building drum relative to the casing, In order to be fed inwards, a process known as edge stitching is carried out, whereby this unsystematic behaviour can be optimised and, ideally, completely eliminated, as the radially inwardly fed rolling disc ensures a defined course of the inner layer and the fabric layer around the expanded casing. However, this only applies to carcass materials, ie fabric layers with a thread course of approximately 90° to the building drum.
Im Zuge der Verbesserung der Reifenperformance werden vermehrt Gewebelagen eingesetzt, deren Fadenverlauf deutlich von 90° zur Aufbautrommel abweicht, sodass die vorangehend erläuterte Edge Stitching Technologie nur noch bedingt anwendbar ist, da Anrollscheiben beidseits des Mantels auf unterschiedliche Fäden der Gewebelage treffen. Dadurch kann es zu systematischen Verschiebungen der Gewebeeinlage über die Schulter der Aufbautrommel kommen. As tire performance improves, more and more fabric layers are being used whose thread path deviates significantly from 90° to the build drum, so that the edge stitching technology explained above can only be used to a limited extent, since the rolling discs on both sides of the casing come into contact with different threads of the fabric layer. This can lead to systematic shifting of the fabric insert over the shoulder of the build drum.
Aus der DE 2019989A1 ist eine Anrollvorrichtung für Reifenaufbaumaschinen bekannt geworden, die neben dem Paar Anrollscheiben zusätzlich über Zusatzandrückrollen verfügt, die über einen hydraulischen oder pneumatischen Antrieb zur Trommelachse schwenkbar angelenkt sind. Dies ist mechanisch sehr aufwendig und eignet sich nicht zur Verhinderung von Verschiebungen der Gewebelage bei einem von 90° zur Aufbautrommel abweichenden Fadenverlauf. DE 2019989A1 describes a rolling device for tire building machines which, in addition to the pair of rolling discs, also has additional pressure rollers which are pivotably connected to the drum axis via a hydraulic or pneumatic drive. This is mechanically very complex and is not suitable for preventing shifts in the fabric layer when the thread path deviates from 90° to the building drum.
Aufgabe der Erfindung ist es, eine Reifenaufbaumaschine der eingangs genannten Art vorzuschlagen, die auf einfache und leicht zu bewerkstelligende Weise dahingehend modifiziert werden kann, dass sie die Nachteile des Standes der Technik überwindet. The object of the invention is to propose a tire building machine of the type mentioned at the outset which can be modified in a simple and easy manner to overcome the disadvantages of the prior art.
Zur Lösung der gestellten Aufgabe wird erfindungsgemäß die Ausgestaltung einer Reifenaufbaumaschine gemäß den Merkmalen des Patentanspruchs 1 vorgeschlagen. To achieve the stated object, the invention proposes the design of a tire building machine according to the features of patent claim 1.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche. Advantageous embodiments and further developments of the invention are the subject of the dependent claims.
Die erfindungsgemäße Lösung sieht vor, dass jeweils auf den einander zugewandten Innenseiten der Anrollscheiben eine Zusatzrolle vorgesehen ist, die unabhängig von der Anrollscheibe drehbar gelagert ist und bei gegenüber dem Mantel radial einwärts zugestellten Anrollscheiben radial an den Mantel anpressbar sind. The solution according to the invention provides that an additional roller is provided on each of the inner sides of the roller discs facing each other, which roller operates independently of the The rolling disc is rotatably mounted and can be pressed radially against the casing when the rolling discs are positioned radially inwards relative to the casing.
Die erfindungsgemäß vorgesehene und auf der jeweils einander zugewandten Innenseiten der Anrollscheiben vorgesehene Zusatzrolle bewirkt, dass während des Anrollens der Innenschicht und der Gewebelage um den Schulterbereich, d. h. dem Übergangsbereich zwischen dem radial aufgeweiteten Mantel und den axialen Enden der Aufbautrommel, die Gewebelage in ihrer Position relativ zur Innenschicht und zur Oberfläche des Mantels von der Zusatzrolle festgeklemmt und an einer Verschiebung gehindert wird. Auf diese Weise wird es möglich, die sogenannte Edge Stiching Technologie auch bei Gewebelagen anzuwenden, deren Fadenverlauf deutlich von 90° zur Aufbautrommel abweicht, sodass Verbesserungen der Qualität, Performance und Produktionsstabilität erreichbar sind. The additional roller provided according to the invention and provided on the inner sides of the rolling discs facing each other ensures that, during the rolling of the inner layer and the fabric layer around the shoulder area, i.e. the transition area between the radially expanded casing and the axial ends of the building drum, the fabric layer is clamped in its position relative to the inner layer and the surface of the casing by the additional roller and prevented from shifting. In this way, it is possible to use the so-called edge stitching technology even for fabric layers whose thread path deviates significantly from 90° to the building drum, so that improvements in quality, performance and production stability can be achieved.
Nach einem Vorschlag der Erfindung sind die Anrollscheiben jeweils mit der zugehörigen Zusatzrolle auf einer gemeinsamen Achse unabhängig voneinander drehbar gelagert, können aber über einen entsprechenden Antrieb gleichförmig radial in Richtung auf den Mantel angepresst bzw. über diesen hinaus zugestellt werden. According to a proposal of the invention, the roller discs are each mounted with the associated additional roller on a common axis so as to be independently rotatable, but can be uniformly pressed radially in the direction of the casing or fed beyond it via a corresponding drive.
Nach einem weiteren Vorschlag der Erfindung sind die Zusatzrollen aus Hartgummi hergestellt, wobei Shore Härten A von 70-100 als geeignet angesehen werden. According to a further proposal of the invention, the additional rollers are made of hard rubber, with Shore hardnesses A of 70-100 being considered suitable.
Die Zusatzrollen können nach einem weiteren Vorschlag der Erfindung entweder zylindrisch ausgeführt sein oder aber mit einem Radius versehen sein, der in Richtung auf die zugehörige Anrollscheibe einen ansteigenden Durchmesser der Zusatzrolle bewirkt. According to a further proposal of the invention, the additional rollers can either be cylindrical or provided with a radius which causes an increasing diameter of the additional roller in the direction of the associated roller disc.
Nach einem weiteren Vorschlag der Erfindung ist vorgesehen, dass der Durchmesser der Zusatzrollen so bemessen ist, dass bei an den Mantel angepresster Position die zugehörige benachbarte Anrollscheibe einen Abstand von 1 ,5 bis 5 mm, vorzugsweise etwa 3 mm gegenüber dem Umfang des axialen Endes der Aufbautrommel aufweist. Dadurch wird bewirkt, dass zu dem Zeitpunkt, an dem die Zusatzrolle auf dem aufgeweiteten Mantel aufgesetzt wird, die zugehörige Anrollscheibe im entsprechenden Abstand von 1 ,5 bis 5 mm, vorzugsweise 3 mm über dem jeweiligen axialen Ende der Aufbautrommel positioniert wird, wodurch verhindert wird, dass die Innenschicht und die aufliegende Gewebelage von der Anrollscheibe mit dem axialen Ende der Aufbautrommel verrollt wird. Die Innenschicht und die aufliegende Gewebelage können von daher weiterhin auf dem axialen Ende rutschen und der Verformung entsprechend nachfolgen. According to a further proposal of the invention, the diameter of the additional rollers is such that, when pressed against the casing, the associated adjacent roller disc has a distance of 1.5 to 5 mm, preferably about 3 mm, from the circumference of the axial end of the building drum. This ensures that at the time when the additional roller is placed on the expanded casing, the associated roller disc is in the corresponding Distance of 1.5 to 5 mm, preferably 3 mm, above the respective axial end of the building drum, which prevents the inner layer and the overlying fabric layer from being rolled by the rolling disc with the axial end of the building drum. The inner layer and the overlying fabric layer can therefore continue to slide on the axial end and follow the deformation accordingly.
Die in der erfindungsgemäßen Weise mit Zusatzrollen modifizierten Anrollscheiben können im Übrigen für alle folgenden Bearbeitungsschritte im Zuge der Herstellung eines Reifenrohlings in an sich bekannter Weise und ohne Einschränkungen weiter verwendet werden. Insofern eignet sich die Erfindung auch zu einfachen Nachrüstung an bereits vorhandenen Reifenaufbaumaschinen. The rolling discs modified with additional rollers in the manner according to the invention can also be used for all subsequent processing steps in the course of producing a green tire in a manner known per se and without restrictions. In this respect, the invention is also suitable for simple retrofitting to existing tire building machines.
Weitere Ausgestaltungen und Einzelheiten der Erfindung werden nachfolgend anhand der ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen: Further embodiments and details of the invention are explained below with reference to the drawing showing an embodiment. They show:
Figur 1 eine schematische Darstellung einer ersten Ausführungsform der Erfindung; Figure 1 is a schematic representation of a first embodiment of the invention;
Figur 2 eine schematische Darstellung einer zweiten Ausführungsform der Erfindung; Figure 2 is a schematic representation of a second embodiment of the invention;
Figur 3 eine schematische Darstellung einer Reifenaufbaumaschine; Figure 3 is a schematic representation of a tire building machine;
Figur 4 eine schematische Darstellung der Edge Stitching Technologie nach dem Stand der Technik auf einer Reifenaufbaumaschine nach Figur 3; Figure 4 is a schematic representation of the edge stitching technology according to the state of the art on a tire building machine according to Figure 3;
Figur 5 eine weitere Darstellung einer Reifenaufbaumaschine nach dem Stand der Technik. Figure 5 is another representation of a tire building machine according to the state of the art.
Aus den Figuren 3 bis 5 ist in einer stark vereinfachten Darstellung eine Reifenaufbaumaschine ersichtlich, die im Zuge der Herstellung eines Reifenrohlings für einen Fahrzeugluftreifen zum Einsatz kommt. Wie insbesondere aus der Figur 5 ersichtlich, umfasst die Reifenaufbaumaschine eine im wesentlichen zylindrische Aufbautrommel, die um eine Mittelachse R drehangetriebenen ist und in ihrem zentralen Bereich einen zylindrischen Mantel 10 sowie zwei durch den zylindrischen Mantel 10 voneinander beanstandete axiale Enden 11 aufweist. Der zylindrischen Mantel 10 ist üblicherweise aus einem Gummimaterial gefertigt und kann durch Beauftragung mit Druckluft wie dargestellt radial gegenüber den axialen Enden 11 aufgeweitet werden. Figures 3 to 5 show a highly simplified representation of a tire building machine that is used in the production of a green tire for a pneumatic vehicle tire. As can be seen in particular from Figure 5, the tire building machine comprises a substantially cylindrical building drum which is driven in rotation about a central axis R and has a cylindrical casing 10 in its central region and two axial ends 11 spaced apart from one another by the cylindrical casing 10. The cylindrical casing 10 is usually made of a rubber material and can be expanded radially relative to the axial ends 11 by applying compressed air as shown.
Zur Herstellung der ersten Lagen eines Reifenrohlings wird, wie aus Figur 3 ersichtlich, bei um die Mittelachse R rotierender Aufbautrommel zunächst der zylindrische Mantel 10 nicht mit Druckluft beaufschlagt, sodass er mit den axialen Enden 11 fluchtet. In diesem Zustand wird die spätere Innenschicht 2 zugeführt und auf die Aufbautrommel oberflächlich aufgewickelt, gefolgt von einer Gewebelage 3, die die spätere Karkasseinlage bildet. To produce the first layers of a green tire, as can be seen from Figure 3, the cylindrical casing 10 is initially not subjected to compressed air while the building drum is rotating about the central axis R, so that it is aligned with the axial ends 11. In this state, the later inner layer 2 is fed in and wound onto the surface of the building drum, followed by a fabric layer 3, which later forms the carcass insert.
Bevor anschließend im Bereich der axialen Enden 11 die hier nicht dargestellten Kernpakete auf die Randbereiche von Innenschicht 2 und Gewebelage 3 aufgebracht werden, wird der Mantel 10 mit Druckluft beaufschlagt und radial aufgeweitet, sodass er gegenüber den axialen Enden 11 einen vergrößerten Durchmesser einnimmt. Dabei kommt es im Bereich der Schulter des Mantels 10, in welchem dieser in die axialen Enden 11 übergeht, zu einem Undefinierten Winkelverlauf der Innenschicht 2 und der Gewebelage 3, wobei der Abgangswinkel von dem Mantel 10 mit a in Figur 4 dargestellt ist. Sofern die Gewebelage 3 über einen Fadenverlauf verfügt, der im wesentlichen unter einem Winkel von 90° zur Aufbautrommel ausgerichtet ist, kann über eine Anrollvorrichtung der Reifenaufbaumaschine mit zwei gegenläufig parallel zum Mantel 10 verfahrbaren und radial an den Mantel 10 anpressbaren Anrollscheiben 4 in jedem Bereich der Schulter des Mantels 10 die Innenschicht 2 und die Gewebelage 3 an den radial expandierten Endbereich des Mantels 10 angelegt und der Winkel a minimiert oder idealerweise vollständig eliminiert werden, was als Edge Stitching Technologie bezeichnet wird. Weist jedoch die Gewebelage 3 einen Fadenverlauf auf, der vom Winkel von 90° zur Aufbautrommel wesentlich abweicht, wie es bei modernen Performancereifen der Fall ist, greift die Anrollscheibe 4 an verschiedenen Fäden der Gewebelage 3 an und es kann zu einer systematischen Verschiebung der Gewebeeinlage 3 über die Trommelschulter kommen. Before the core packages (not shown here) are then applied to the edge areas of the inner layer 2 and fabric layer 3 in the area of the axial ends 11, the jacket 10 is pressurized with compressed air and expanded radially so that it has a larger diameter than the axial ends 11. In the area of the shoulder of the jacket 10, where it merges into the axial ends 11, there is an undefined angular profile of the inner layer 2 and the fabric layer 3, with the angle of departure from the jacket 10 being shown with a in Figure 4. If the fabric layer 3 has a thread path that is essentially aligned at an angle of 90° to the building drum, the inner layer 2 and the fabric layer 3 can be applied to the radially expanded end region of the casing 10 in each region of the shoulder of the casing 10 via a rolling device of the tire building machine with two rolling disks 4 that can be moved in opposite directions parallel to the casing 10 and pressed radially against the casing 10, and the angle a can be minimized or ideally completely eliminated, which is referred to as edge stitching technology. However, if the fabric layer 3 has a thread path that deviates significantly from the angle of 90° to the building drum, as is the case with modern performance tires, the rolling disc 4 attacks various threads of the fabric layer 3 and a systematic displacement of the fabric insert 3 over the drum shoulder can occur.
Um diesem Problem zu begegnen, wird die Anrollscheibe 4 in einer ersten aus der Figur 1 ersichtlichen Ausführungsform dahingehend modifiziert, dass jeweils auf den einander zugewandten Innenseiten der Anrollscheiben 4 eine Zusatzrolle 40 vorgesehen ist, die auf einer gemeinsamen Achse mit der Anrollscheibe 4 angeordnet ist, wobei jedoch Anrollscheibe 4 und Zusatzrolle 40 unabhängig voneinander drehbar gelagert sind. In order to counteract this problem, the rolling disk 4 is modified in a first embodiment shown in Figure 1 in such a way that an additional roller 40 is provided on each of the inner sides of the rolling disks 4 facing one another, which additional roller is arranged on a common axis with the rolling disk 4, but the rolling disk 4 and the additional roller 40 are mounted so as to be rotatable independently of one another.
Die Positionierung und Dimensionierung der Zusatzrolle 40 zu jeweiligen Anrollscheibe 4 ist so gewählt, dass bei gegenüber dem Mantel 10 radial einwärts in Richtung des axialen Endes 11 zugestellter Anrollscheibe 4 sich die Zusatzrolle 40 umfänglich auf den Schulterbereich des Mantels 10 auflegt und dort anpressbar ist, sodass die auf dem Mantel 10 aufliegende Gewebelage 3 und gegebenenfalls auch die Innenschicht 2 zwischen Zusatzrolle 40 und Mantel 10 festgeklemmt, festgehalten und an einer Verschiebung relativ zueinander gehindert werden. The positioning and dimensioning of the additional roller 40 for the respective rolling disk 4 is selected such that when the rolling disk 4 is positioned radially inwardly relative to the casing 10 in the direction of the axial end 11, the additional roller 40 rests circumferentially on the shoulder area of the casing 10 and can be pressed there, so that the fabric layer 3 resting on the casing 10 and, if applicable, also the inner layer 2 are clamped between the additional roller 40 and the casing 10, held in place and prevented from moving relative to one another.
Zudem ist der Durchmesser der Zusatzrolle 40 so bemessen, dass diese bei an den Mantel 10 angepresster Position als Anschlag dient und die benachbarte Anrollscheibe 4 einen umfänglichen Abstand X von vorzugsweise etwa 3 mm zum axialen Ende 11 der Aufbautrommel aufweist. Auf diese Weise wird verhindert, dass die Innenschicht 2 und die Gewebelage 3 mit dem axialen Ende 11 der Aufbautrommel durch die Anrollscheibe 4 verbunden werden, sodass es diesen weiterhin ermöglicht ist, entsprechend des Materialflusses auf der Oberfläche des axialen Endes 11 zu rutschen. In addition, the diameter of the additional roller 40 is dimensioned such that it serves as a stop when pressed against the casing 10 and the adjacent rolling disk 4 has a circumferential distance X of preferably about 3 mm from the axial end 11 of the building drum. In this way, the inner layer 2 and the fabric layer 3 are prevented from being connected to the axial end 11 of the building drum by the rolling disk 4, so that they are still able to slide on the surface of the axial end 11 in accordance with the material flow.
Die Zusatzrolle ist vorzugsweise aus Hartgummi einer Shore Härte A von etwa 70-100 gebildet und kann im dargestellten Ausführungsbeispiel gemäß Figur 1 einen Radius aufweisen, dergestalt, dass sich der Durchmesser in Richtung auf die zugehörige Anrollscheibe 4 nach Maßgabe des Verlaufs der Innenschicht 2 und der Gewebelage 3 im Schulterbereich des Mantels 10 vergrößert. The additional roller is preferably made of hard rubber with a Shore A hardness of about 70-100 and can have a radius in the embodiment shown in Figure 1 such that the diameter increases in the direction of the associated The rolling disk 4 is enlarged in accordance with the course of the inner layer 2 and the fabric layer 3 in the shoulder area of the casing 10.
Alternativ kann aber auch, wie in Figur 2 dargestellt, vorgesehen sein, dass die Zusatzrolle 40 zylindrisch ausgebildet ist. Alternatively, as shown in Figure 2, the additional roller 40 can be cylindrical.
Bezugszeichenliste: List of reference symbols:
1 : Aufbautrommel1 : Build-up drum
2: Innenschicht 3: Gewebelage2: Inner layer 3: Fabric layer
4: Anrollscheibe4: Rolling disc
10: Mantel 10: Coat
11 : axiales Ende R: Mittelachse11 : axial end R: central axis
X: Abstand X: distance
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023206719.6 | 2023-07-14 | ||
| DE102023206719.6A DE102023206719A1 (en) | 2023-07-14 | 2023-07-14 | tire building machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025016511A1 true WO2025016511A1 (en) | 2025-01-23 |
Family
ID=91946566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2024/200065 Pending WO2025016511A1 (en) | 2023-07-14 | 2024-06-27 | Tire-construction machine |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102023206719A1 (en) |
| WO (1) | WO2025016511A1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1438158A (en) * | 1917-02-07 | 1922-12-05 | Goodyear Tire & Rubber | Stitcher roll |
| US2406093A (en) * | 1944-09-22 | 1946-08-20 | Miller Edwin | Tire building apparatus |
| DE1187011B (en) * | 1961-11-11 | 1965-02-11 | Phoenix Gummiwerke Ag | Roller for rolling the envelopes of cord inserts around the bead core of a green tire |
| DE2019989A1 (en) | 1970-04-24 | 1971-11-04 | Continental Gummi Werke Ag | Roller device for tyre building machine |
| SE367354B (en) * | 1972-05-29 | 1974-05-27 | A Bakharev | |
| GB1360114A (en) * | 1972-06-02 | 1974-07-17 | Bakharev A I | Ply-stitching and turn-down device for tyre-building machines |
| US5169483A (en) * | 1989-11-20 | 1992-12-08 | Bridgestone Corporation | Tire component member attaching apparatus |
| JPH11227068A (en) * | 1998-02-18 | 1999-08-24 | Sumitomo Rubber Ind Ltd | Stitching device |
| DE60306376T2 (en) | 2002-05-21 | 2007-05-10 | Matador A.S. | METHOD FOR PRINTING A BELT PLATE ASSEMBLY WITH A CARBASS ASSEMBLY THROUGH STITCHING IN THE PRODUCTION OF TAPE AND DEVICE FOR CARRYING OUT SUCH A METHOD |
| WO2023048560A1 (en) * | 2021-09-24 | 2023-03-30 | Vmi Holland B.V | Stitcher, tire building machine comprising said stitcher and method for stitching a tire component |
-
2023
- 2023-07-14 DE DE102023206719.6A patent/DE102023206719A1/en active Pending
-
2024
- 2024-06-27 WO PCT/DE2024/200065 patent/WO2025016511A1/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1438158A (en) * | 1917-02-07 | 1922-12-05 | Goodyear Tire & Rubber | Stitcher roll |
| US2406093A (en) * | 1944-09-22 | 1946-08-20 | Miller Edwin | Tire building apparatus |
| DE1187011B (en) * | 1961-11-11 | 1965-02-11 | Phoenix Gummiwerke Ag | Roller for rolling the envelopes of cord inserts around the bead core of a green tire |
| DE2019989A1 (en) | 1970-04-24 | 1971-11-04 | Continental Gummi Werke Ag | Roller device for tyre building machine |
| SE367354B (en) * | 1972-05-29 | 1974-05-27 | A Bakharev | |
| GB1360114A (en) * | 1972-06-02 | 1974-07-17 | Bakharev A I | Ply-stitching and turn-down device for tyre-building machines |
| US5169483A (en) * | 1989-11-20 | 1992-12-08 | Bridgestone Corporation | Tire component member attaching apparatus |
| JPH11227068A (en) * | 1998-02-18 | 1999-08-24 | Sumitomo Rubber Ind Ltd | Stitching device |
| DE60306376T2 (en) | 2002-05-21 | 2007-05-10 | Matador A.S. | METHOD FOR PRINTING A BELT PLATE ASSEMBLY WITH A CARBASS ASSEMBLY THROUGH STITCHING IN THE PRODUCTION OF TAPE AND DEVICE FOR CARRYING OUT SUCH A METHOD |
| WO2023048560A1 (en) * | 2021-09-24 | 2023-03-30 | Vmi Holland B.V | Stitcher, tire building machine comprising said stitcher and method for stitching a tire component |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023206719A1 (en) | 2025-01-16 |
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