DE3907123A1 - Tyre building machine - Google Patents

Tyre building machine

Info

Publication number
DE3907123A1
DE3907123A1 DE19893907123 DE3907123A DE3907123A1 DE 3907123 A1 DE3907123 A1 DE 3907123A1 DE 19893907123 DE19893907123 DE 19893907123 DE 3907123 A DE3907123 A DE 3907123A DE 3907123 A1 DE3907123 A1 DE 3907123A1
Authority
DE
Germany
Prior art keywords
tyre
building machine
ply
drum
drum shell
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Withdrawn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
DE19893907123
Other languages
German (de)
Inventor
Juergen Dipl Ing Becher
Hans Dipl Ing Dreyer
Richard Dipl Ing Kaczorowski
Eggert Oldenburg
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Fried Krupp AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
Priority to DE19893907123 priority Critical patent/DE3907123A1/en
Publication of DE3907123A1 publication Critical patent/DE3907123A1/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Withdrawn legal-status Critical Current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
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • 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
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • B29D2030/2671—Holding the layers, e.g. the webs or the plies, in position onto the drum
    • B29D2030/2692—Holding the layers, e.g. the webs or the plies, in position onto the drum by using suction means, e.g. vacuum producing devices

Landscapes

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

Abstract

In the case of known tyre building machines, unintentional positional inaccuracies of the first ply of the green tyre become fixed, which results in inferior quality of the finished tyre. In addition, damage can be caused during lifting (shaping) of the green tyre. The novel tyre building machine is intended to permit reliable positioning of the initial edge of the first ply of a green tyre and unproblematical lifting of this ply. The drum shell of the central part (1) has along a generating line a plurality of interruptions (7), which are connected to a vacuum source. This drum building machine allows the beginning of the first ply of a green tyre to be fixed and lifted reliably without damaging it. <IMAGE>

Description

Die Erfindung betrifft eine Reifenaufbaumaschine mit zwei seitlichen Trommelhälften und einem dazwischen befindlichen Mittelteil mit Trommelschale, wobei die Trommelschale aus einem Stück oder mehreren Segmenten bestehen kann.The invention relates to a tire building machine with two side drum halves and one intermediate part with Drum shell, the drum shell from one Pieces or several segments can exist.

Eine derartige Reifenaufbaumaschine ist beispielsweise aus der DE-AS 27 23 505 bekannt. In Abwandlung der dort beschriebenen Anordnung kann das Mittelteil aber auch unmittelbar auf einer Trommelwelle angeordnet sein, wie dies beispielsweise aus der DE-OS 30 12 166 hervorgeht.Such a tire building machine is known for example from DE-AS 27 23 505. In Modification of the arrangement described there can the middle part also directly on one Drum shaft can be arranged like this for example from DE-OS 30 12 166.

Soweit die Trommelschale bzw. - bei segmentartiger Ausbildung - deren Segmente aus Stahl gefertigt sind, ergibt sich beim Aufwickeln der ersten Lage einer Reifenkarkasse bzw. eines Reifenrohlings das Problem, daß der Rand der Lage an der Trommel nicht haften bleibt und eine nicht bestimmte Lageabweichung einnimmt, die bei ausbleibender Korrektur im harmlosesten Fall zu einer Qualitätseinbuße des fertigen Reifens führt. Vorzunehmende Korrekturen sind aber jeweils mit großem Aufwand von Hand durchzuführen.As far as the drum shell or - in the case of a segment-like design - its segments are made of steel, the problem arises when winding up the first layer of a tire carcass or a green tire that the edge of the layer does not stick to the drum and assumes an undetermined positional deviation , which in the most harmless case leads to a loss of quality of the finished tire if there is no correction. Corrections to be made, however, have to be carried out by hand with great effort.

Zur Vermeidung derartiger Abweichungen ist bereits versucht worden, in die Oberfläche der Trommelschale Einsätze aus Material mit leicht klebriger Oberfläche einzusetzen. Bei dieser Maßnahme besteht aber der Nachteil, daß die erste Lage durch die ständige Klebeeigenschaft auch bei einer unbeabsichtigten fehlerhaften Lage fixiert wird. Im übrigen kann es durch die Klebewirkung beim Bombieren des Reifenrohlings, wenn die Lage von der Trommelschale abgehoben wird, zu Beschädigungen an der Innenseite der Reifenlage kommen.To avoid such deviations already been tried in the surface of the Drum shell inserts made of lightweight material sticky surface. At this  Measure, however, has the disadvantage that the first Location due to the constant adhesive properties an unintentional faulty location becomes. Otherwise it can be due to the adhesive effect when crowning the green tire, if the situation is lifted off the drum shell Damage to the inside of the tire layer come.

Der Erfindung liegt die Aufgabe zugrunde, eine Reifenaufbaumaschine derart zu verbessern, daß ein sicheres Positionieren des anfänglichen Randes der ersten Lage eines Reifenrohlings und ein zerstörungsfreies Abheben dieser Lage möglich ist.The invention has for its object a Tire building machine to improve such that a secure positioning of the initial margin of the first layer of a green tire and a non-destructive lifting of this layer is possible.

Diese Aufgabe wird dadurch gelöst, daß die Trommelschale des Mittelteils längs einer parallel zur Achse der Reifenaufbaumaschine verlaufenden Mantellinie mehrere Unterbrechungen aufweist, die mit einer Vakuumquelle verbindbar sind.This object is achieved in that the Drum shell of the middle part along one parallel to the axis of the tire building machine Surface line has multiple breaks that can be connected to a vacuum source.

Unmittelbar nach dem Auflegen des Anfangs der ersten Lage eines Reifenrohlings können die Unterbrechungen am Umfang mit der Vakuumquelle verbunden werden, so daß der Anfang der ersten Lage festgehalten wird und diese Lage sicher zu Ende gewickelt werden kann. Bei einer fehlerhaften Anfangslage ist eine Korrektur ohne weiteres möglich. Vor dem Bombieren des Reifenrohlings ist die Verbindung mit der Vakuumquelle wieder zu trennen und der Bereich der Unterbrechungen wieder der Atmosphäre auszusetzen.Immediately after hanging up the beginning The first layer of a green tire can Interruptions in circumference with the vacuum source be connected so that the beginning of the first Location is recorded and this location sure to End can be wrapped. If there is a fault The starting position is a correction without further ado possible. Before bombing the green tire the connection to the vacuum source again disconnect and the area of interruptions again to expose to the atmosphere.

Eine vorteilhafte Weiterbildung der Erfindung ist im Unteranspruch beschrieben. Um das Mittelteil der Reifenaufbaumaschine möglichst einfach auszubilden, sind die Unterbrechungen durch eine allen gemeinsame Hohlraumbegrenzung gegen den Innneraum des Mittelteils abgedichtet und durch diese Hohlraumbegrenzung gemeinsam mit der Vakuumquelle verbunden.An advantageous development of the invention is described in the dependent claim. To the middle part of the Training tire building machines as simply as possible, are the interruptions by everyone  common cavity limitation against the interior the middle part sealed and by this Cavity limitation together with the vacuum source connected.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert. Es zeigen:An embodiment of the invention is in the Drawing shown and is closer below explained. Show it:

Fig. 1 das Mittelteil einer Reifenaufbaumaschine in einer Stirnansicht (gesehen in Richtung der Achse der Reifenaufbaumaschine) und Fig. 1 shows the central part of a tire building machine in an end view (seen in the direction of the axis of the tire building machine) and

Fig. 2 das Mittelteil in einem auszugsweisen Längsschnitt längs der Linie II-II in Fig. 1. Fig. 2 shows the middle section in an excerpt of a longitudinal section along the line II-II in FIG. 1.

Das Mittelteil 1 einer Reifenaufbaumaschine weist eine sternförmig ausgebildete Nabe 2 auf, die auf der Trommelwelle 3 einer Reifenaufbaumaschine sitzt. An den sternförmig auseinandergehenden Armen 4 der Nabe 2 ist eine rohrförmige Trommelschale 5 aus Hart-PVC befestigt. Diese Trommelschale 5 weist an der mit 6 gekennzeichneten Stelle längs einer parallel zur Achse der Reifenaufbaumaschine verlaufenden (gedachten, geometrischen) Mantellinie der Trommelschale 5 mehrere Ausnehmungen 7 auf. An der Innenseite der Trommelschale 5 ist ein hohles Gehäuse 8 abgedichtet angebracht, das zu den Öffnungen 7 hin offen ist und über eine gemeinsame, durch eine strichpunktierte Linie symbolisch angedeutete Schlauchverbindung 9 z.B. über das Rohrleitungssystem 10 der rechten Trommelhälfte 11 der Reifenaufbaumaschine mit einer (nicht dargestellten) Vakuumquelle verbunden.The central part 1 of a tire building machine has a star-shaped hub 2 , which sits on the drum shaft 3 of a tire building machine. A tubular drum shell 5 made of rigid PVC is fastened to the arms 4 of the hub 2 which diverge in a star shape. This drum shell 5 has a number of recesses 7 at the point marked 6 along a (imaginary, geometrical) surface line of the drum shell 5 that runs parallel to the axis of the tire building machine. On the inside of the drum shell 5 , a hollow housing 8 is attached in a sealed manner, which is open to the openings 7 and via a common hose connection 9, symbolically indicated by a dash-dotted line, for example via the piping system 10 of the right drum half 11 of the tire building machine with a (not shown) vacuum source connected.

Claims (2)

1. Reifenaufbaumaschine mit zwei seitlichen Trommelhälften und einem Mittelteil mit Trommelschale, dadurch gekennzeichnet, daß die Trommelschale (5) des Mittelteils (1) längs einer parallel zur Achse der Reifenaufbaumaschine verlaufenden Mantellinie mehrere Unterbrechungen (7) aufweist, die mit einer Vakuumquelle verbindbar sind.1. Tire building machine with two side drum halves and a middle part with a drum shell, characterized in that the drum shell ( 5 ) of the middle part ( 1 ) along a line parallel to the axis of the tire building machine has several interruptions ( 7 ) which can be connected to a vacuum source. 2. Reifenaufbaumaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Unterbrechungen (7) durch eine allen gemeinsame Hohlraumbegrenzung (8) gegen den Inneraum des Mittelteils (1) abgedichtet und durch die Hohlraumbegrenzung (8) gemeinsam mit der Vakuumquelle verbindbar sind.2. Tire building machine according to claim 1, characterized in that the interruptions ( 7 ) are sealed by an all common cavity limitation ( 8 ) against the interior of the central part ( 1 ) and can be connected to the vacuum source by the cavity limitation ( 8 ).
DE19893907123 1989-03-06 1989-03-06 Tyre building machine Withdrawn DE3907123A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893907123 DE3907123A1 (en) 1989-03-06 1989-03-06 Tyre building machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893907123 DE3907123A1 (en) 1989-03-06 1989-03-06 Tyre building machine

Publications (1)

Publication Number Publication Date
DE3907123A1 true DE3907123A1 (en) 1990-09-13

Family

ID=6375621

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893907123 Withdrawn DE3907123A1 (en) 1989-03-06 1989-03-06 Tyre building machine

Country Status (1)

Country Link
DE (1) DE3907123A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150314543A1 (en) * 2012-12-17 2015-11-05 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723505B2 (en) * 1977-05-25 1981-04-23 Vmi-Epe-Holland B.V., Epe Drum for building and shaping a blank for radial tires
DE2507726C2 (en) * 1975-02-22 1982-09-30 Continental Gummi-Werke Ag, 3000 Hannover Device for changing the length and transferring treads for pneumatic vehicle tires
DE3012166C2 (en) * 1979-04-02 1987-12-10 The Goodyear Tire & Rubber Co., Akron, Ohio, Us

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2507726C2 (en) * 1975-02-22 1982-09-30 Continental Gummi-Werke Ag, 3000 Hannover Device for changing the length and transferring treads for pneumatic vehicle tires
DE2723505B2 (en) * 1977-05-25 1981-04-23 Vmi-Epe-Holland B.V., Epe Drum for building and shaping a blank for radial tires
DE3012166C2 (en) * 1979-04-02 1987-12-10 The Goodyear Tire & Rubber Co., Akron, Ohio, Us

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150314543A1 (en) * 2012-12-17 2015-11-05 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres
US9738044B2 (en) * 2012-12-17 2017-08-22 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres
US10800123B2 (en) 2012-12-17 2020-10-13 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: FRIED. KRUPP AG, 4300 ESSEN, DE

8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: FRIED. KRUPP AG HOESCH-KRUPP, 45143 ESSEN UND 4414

8130 Withdrawal