WO2016173570A1 - Mécanisme de centrage pour machines de vulcanisation de pneumatiques - Google Patents

Mécanisme de centrage pour machines de vulcanisation de pneumatiques Download PDF

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Publication number
WO2016173570A1
WO2016173570A1 PCT/DE2015/000351 DE2015000351W WO2016173570A1 WO 2016173570 A1 WO2016173570 A1 WO 2016173570A1 DE 2015000351 W DE2015000351 W DE 2015000351W WO 2016173570 A1 WO2016173570 A1 WO 2016173570A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
green tire
bead
receiving
center mechanism
Prior art date
Application number
PCT/DE2015/000351
Other languages
German (de)
English (en)
Inventor
Rüdiger MEINCKE
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 WO2016173570A1 publication Critical patent/WO2016173570A1/fr

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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0602—Vulcanising tyres; Vulcanising presses for tyres the vulcanising medium being in direct contact with the tyre
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/062—Means for sealing the tyre against the mould in the bead areas
    • B29D2030/0621—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices
    • B29D2030/0626—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices the pressing devices being one-piece devices
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/062—Means for sealing the tyre against the mould in the bead areas
    • B29D2030/0621—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices
    • B29D2030/0627—Means for sealing the tyre against the mould in the bead areas to seal the bead portions against the mould i.e. by using pressing devices the pressing devices being ring-shaped

Definitions

  • the invention relates to a center mechanism for tire vulcanizing machines for receiving a green tire, comprising at least one mounting device for receiving a tire bead.
  • One of the main production steps for the production of tires is the vulcanization of green tires.
  • the green tire is inserted into a mold which is located inside a tire vulcanizing machine and then heated to the material-dependent vulcanizing temperature and subjected to a vulcanizing pressure on the inside of the green tire. It is said that the green tire is "baked.”
  • the tire semi-finished products consist essentially of various rubber compounds, textile fabric or textile cord, steel belts and rubber-coated "bead cores". These become cohesive with each other under pressure and temperature over a certain time connected and at the same time the rubber compounds, in particular the rubber shares, their elastic properties impressed.
  • a suitable heating medium with a corresponding temperature and under pressure is introduced into the interior of the green tire.
  • Suitable heating media are primarily all recoverable fluid and gaseous materials with good heat capacity. Tempering oils, water, steam and hot and saturated steam or saline solutions have proved particularly suitable.
  • the green tire within the mold is determined by a device such that a largely pressure-tight chamber is formed within the green tire.
  • a tire rim-like device geometry is used to which the tire beads can apply pressure-tight.
  • an elastic chamber arranged inside the green tire, the so-called bellows or bladder, may be provided for receiving the pressurized heating medium.
  • One possibility for indirect centering of the bead rings relative to the vulcanizing machine and the tire mold instead of a movement mechanism is the use of preferably conical centering surfaces in the shape of the later bead rings. These centering surfaces are mounted on the outside of the bead rings and correspond with a bead centering determined correspondingly centrally to the vulcanization machine and the tire mold, so that the centering effect in the end position is supported during the axial movement for positioning the green tire in the tire mold.
  • the invention achieves this object by providing a largely pressure-tight chamber inside the green tire by the configuration of a directly centering and low-pressure-loss green tire pick-up device and the use of a corresponding Vulkanisationsvons.
  • the teaching of the invention recognizes that a largely pressure-tight chamber without the use of a bellows is supported by a direct centering of the green tire relative to a centrally arranged and largely pressure-tight tire receiving device in the form of axially movable bead rings and concentric tire mold in a very efficient manner, it allows a heating medium under pressure and with a suitable vulcanization temperature to act on the inner wall of the green tire.
  • the tire receiving device is essentially formed by two bead clamping rings per circumferential tire bead. At least one of the bead clamping rings per circumferential tire bead is preferably displaceable linearly in the axial direction of the tire mold of the vulcanizing machine and the tire blank to be picked up. Due to the geometric configuration of each two bead clamping rings per tire bead both the positive and positive clamping of the tire bead, as well as the direct centering of the green tire relative to the arranged concentric with the bead clamping rings tire mold, which usually by two mold halves as a first and a second press part is formed.
  • the direct centering of the green tire is carried out by the clamping of the tire beads within the bead clamping rings by their geometric design and the common functional effect of each two bead clamping rings per tire bead.
  • the bead clamping rings are depending on the used recording linearly movable devices plate-shaped or annular and have on the outer surface of a contact shoulder, which is formed by a circumferential slope.
  • the two cooperating Wulstklemm rings are arranged mirror-symmetrically with respect to their plant shoulders opposite each other and variable in their distance from one another by the linearly movable devices.
  • the green tire is first introduced with its tire beads in the tire mold such that depending on a bead clamping ring of the cooperating Wulstklemmringpases inside and outside of the tire bead. Due to the maximum outer diameters of the bead clamping rings larger than the inner diameters of the tire beads, it is necessary to apply the green tire to the tire mold and the center mechanism having the bead rings by obliquely moving a tire assembly onto a rim.
  • the design of the abutment shoulders with different angles of attack it is possible to influence both the pressing forces on the contact surfaces and the centering effect by the resulting parallelogram. If a larger angle with respect to the center axis is selected, the centering of a green tire can take place, which has initially taken a more off-center position when inserted into the tire mold. Will be a smaller angle with respect to When the center axis is selected, the centering of a green tire can take place counter to a larger radial force component acting on the tire bead.
  • the invention recognizes that, depending on the selected angle of attack, a self-locking of the clamping connection can be achieved and, as a result, after the clamping position has been reached, a force application by the linear movement devices is not required.
  • Fig. 1 shows the center mechanism for receiving a green tire in a Reifenvulkanisiermaschine in the open position
  • Fig. 2 shows the center mechanism for receiving a green tire in a Reifenvulkanisiermaschine in the closed position.
  • Figure 1 schematically illustrates the center mechanism for receiving a green tire (100) in a tire curing machine in the open position of the press parts, tire mold halves (1, 2). Shown is the situation with a tire blank (7) inserted into the vulcanizing machine, which with its tire beads (7a, 7b) is positioned between two cooperating bead clamping rings (3, 4, 5, 6) and rests on at least one of the bead clamping rings (6) ,
  • the bead clamping rings A and B (3, 4) for clamping and centering the second tire bead (7b) and the bead clamping rings C and D (5, 6) act to clamp and center the first tire bead (7a).
  • At least one of the two cooperating bead clamping rings (3, 4, 5, 6) must be linearly movable.
  • the embodiment shown has with Wulstklemmring D (6) via a non-movable and with the Wulstklemmringen A, B, C (3, 4, 5) over three movable bead clamp rings.
  • the linearly movable devices may be linear cylinders (8, 9, 10) with one or more piston rods and operate fluidically or pneumatically.
  • the respective piston rods of the cylinders (8, 9, 10) and, or the receptacle (1 1) can be integrally formed as Wulstklemmringe (3, 4, 6) or designed as a support device for Wulstklemmringe in the form of separate components.
  • Wulstklemmringe in the form of separate components offer the advantage of easy interchangeability, for example, when worn or when due to varying bead geometries abutment shoulders (12) with adapted slopes by different angle of attack.
  • Figure 2 schematically illustrates the center mechanism for receiving a green tire (100) in a tire curing machine in the closed position of the press parts, tire mold halves (1, 2).
  • tire mold halves (1, 2). In order to close the tire vulcanizing machine or the preferably two-part tire mold (1, 2) designed as press parts, at least one of the tire molds (1) is movably arranged and is moved in the direction of the second tire mold (2), so that their distance from one another on the desired dimension reduced or the closed position is taken.
  • the linearly movable devices (8, 9, 10) are activated and move the cooperating bead clamping rings A and B (3, 4) relative to each other and bead clamping ring C (5) relative to bead clamping ring D (6), so that the tire beads (7a , 7b) are clamped and centered by the abutment shoulders (12) of the bead clamping rings (3, 4, 5, 6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

La présente invention concerne un mécanisme de centrage (100) pour machines de vulcanisation de pneumatiques destinées à recevoir un pneu cru (7), comprenant au moins un dispositif de retenue (100, 101) destiné à recevoir un bourrelet de pneu, ledit dispositif de retenue retenant un bourrelet de pneu au moyen d'éléments de liaison par serrage (3, 4, 5, 6) de sorte qu'un centrage direct du pneu cru (7) et que la formation d'une chambre sensiblement étanche à la pression dans la zone interne du pneu cru s'en trouvent favorisés.
PCT/DE2015/000351 2015-04-30 2015-07-08 Mécanisme de centrage pour machines de vulcanisation de pneumatiques WO2016173570A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015005714.6 2015-04-30
DE102015005714.6A DE102015005714A1 (de) 2015-04-30 2015-04-30 Mittenmechanismus für Reifenvulkanisiermaschinen

Publications (1)

Publication Number Publication Date
WO2016173570A1 true WO2016173570A1 (fr) 2016-11-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/000351 WO2016173570A1 (fr) 2015-04-30 2015-07-08 Mécanisme de centrage pour machines de vulcanisation de pneumatiques

Country Status (2)

Country Link
DE (1) DE102015005714A1 (fr)
WO (1) WO2016173570A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022243631A1 (fr) * 2021-05-19 2022-11-24 Compagnie Generale Des Etablissements Michelin Moule et procédé de cuisson sans membrane optimisés pour pneumatique
EP4292799A1 (fr) * 2022-06-17 2023-12-20 Continental Reifen Deutschland GmbH Presse de vulcanisation pour pneus de véhicule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111231388B (zh) * 2020-02-11 2021-09-17 厦门科炬源自动化设备有限公司 一种免胶囊的轮胎硫化机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528659A (en) * 1921-08-06 1925-03-03 Mattia Barthold De Process of and apparatus for manufacturing pneumatic tires
US2904832A (en) * 1955-08-24 1959-09-22 Cleveland Trust Co Expandable bead ring for vulcanizing presses
DE1151924B (de) * 1955-07-27 1963-07-25 Firestone Tire & Rubber Co Vulkanisierpresse zur Herstellung eines Luftreifens
DE2161939A1 (de) * 1971-12-14 1973-06-20 Krupp Gmbh Balglose reifenherstellung
US4545750A (en) * 1983-03-14 1985-10-08 Kazumasa Sarumaru Apparatus for vulcanizing a tire
EP0368546A1 (fr) * 1988-11-07 1990-05-16 Kabushiki Kaisha Kobe Seiko Sho Dispositif de fabrication de pneus sans sac gonflable
EP0441150A2 (fr) * 1990-02-05 1991-08-14 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Presse de vulcanisation pour pneus sans sac gonflable

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528659A (en) * 1921-08-06 1925-03-03 Mattia Barthold De Process of and apparatus for manufacturing pneumatic tires
DE1151924B (de) * 1955-07-27 1963-07-25 Firestone Tire & Rubber Co Vulkanisierpresse zur Herstellung eines Luftreifens
US2904832A (en) * 1955-08-24 1959-09-22 Cleveland Trust Co Expandable bead ring for vulcanizing presses
DE2161939A1 (de) * 1971-12-14 1973-06-20 Krupp Gmbh Balglose reifenherstellung
US4545750A (en) * 1983-03-14 1985-10-08 Kazumasa Sarumaru Apparatus for vulcanizing a tire
EP0368546A1 (fr) * 1988-11-07 1990-05-16 Kabushiki Kaisha Kobe Seiko Sho Dispositif de fabrication de pneus sans sac gonflable
EP0441150A2 (fr) * 1990-02-05 1991-08-14 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Presse de vulcanisation pour pneus sans sac gonflable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022243631A1 (fr) * 2021-05-19 2022-11-24 Compagnie Generale Des Etablissements Michelin Moule et procédé de cuisson sans membrane optimisés pour pneumatique
FR3123017A1 (fr) * 2021-05-19 2022-11-25 Compagnie Generale Des Etablissements Michelin Moule et procédé de cuisson sans membrane optimisés pour pneumatique
EP4292799A1 (fr) * 2022-06-17 2023-12-20 Continental Reifen Deutschland GmbH Presse de vulcanisation pour pneus de véhicule

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