WO2016015927A1 - Moule de vulcanisation destiné à vulcaniser des pneus de véhicule et procédé de fabrication d'un moule de vulcanisation - Google Patents

Moule de vulcanisation destiné à vulcaniser des pneus de véhicule et procédé de fabrication d'un moule de vulcanisation Download PDF

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Publication number
WO2016015927A1
WO2016015927A1 PCT/EP2015/064326 EP2015064326W WO2016015927A1 WO 2016015927 A1 WO2016015927 A1 WO 2016015927A1 EP 2015064326 W EP2015064326 W EP 2015064326W WO 2016015927 A1 WO2016015927 A1 WO 2016015927A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
venting
vulcanizing
negative
gap
Prior art date
Application number
PCT/EP2015/064326
Other languages
German (de)
English (en)
Inventor
Joharsyah Ciptokusumo
Paula Prochnow
Original Assignee
Continental Reifen Deutschland 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 Continental Reifen Deutschland Gmbh filed Critical Continental Reifen Deutschland Gmbh
Publication of WO2016015927A1 publication Critical patent/WO2016015927A1/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
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
    • 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
    • B29D2030/0616—Surface structure of the mould, e.g. roughness, arrangement of slits, grooves or channels
    • 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
    • B29D2030/0617—Venting devices, e.g. vent plugs or inserts

Definitions

  • the invention relates to a Vulkanisierform for vulcanizing vehicle tires, with a plurality, together to a circumferentially closed form movable
  • Mold segments each mold segment radially inside a mold surface having a negative tread profile with negative profile elements for forming the positive tread profile with positive profile elements of the vehicle tire to be vulcanized and wherein the forming surface has narrow venting column for discharging the air from the mold cavity.
  • the invention also relates to a process for producing an aforementioned vulcanizing mold.
  • the tire vulcanization is carried out in heating presses, in which the green tire is used in suitable Vulkanisierformen and vulcanized under the action of heat and pressure.
  • Tire vulcanizing molds include mold segments which together form the radially outer surface of the tire, such as the tread and the shoulder region, while other segments form the wider regions of the tire.
  • the unvulcanized green green tire is heat pressed in the vulcanization mold and converted to its final rubbery state by rubber crosslinking reactions.
  • the tire receives its profile and sidewall design by the corresponding negative design of the molding surfaces of the mold segments. It is important in the tire vulcanization that the trapped air within the mold cavity does not affect the manufacturing quality of the vehicle tire when moving together the mold segments.
  • the mold segments of the vehicle tire vulcanizing molds are made of metal, usually steel or aluminum.
  • a Vulkanisierform according to the preamble has become known from the previously unpublished DE 10 2012 109 723.
  • the vulcanizing mold is a milled mold in which the molding surfaces of the mold segments are at least in the central region of the negative tread pattern puzzle pieces composed of part-shaped segments with division in the circumferential direction.
  • all partial mold segments can be arranged interchangeably or else both fixed and exchangeable within the mold segment.
  • the columns of contiguous sub-shape segments are designed as venting gaps which communicate with the atmosphere.
  • Vulcanization mold has advantages in terms of venting performance.
  • the sum of the gap lengths is increased over conventional circular venting means, whereby the venting is improved. It can be removed more air volume per unit time and air pockets, which would reduce the manufacturing quality of the tire are reliably avoided.
  • the invention is therefore an object of the invention to provide a cost-effective Vulkanisierform with deaerators, which is easy to clean and which is suitable for the mass production of vehicle tires.
  • the object is achieved according to the preamble and the characterizing feature of claim 1, characterized in that the Vulkanisierform is a mold, the mold segments are integral and in which the venting column are introduced later.
  • Molds are generally well suited for the standard shapes of vehicle tires. By means of a casting model many forms can be manufactured inexpensively. By the subsequent introduction of the venting column in the mold surface of the one-piece casting mold segments by means of suitable processes, the vulcanizing mold need not be assembled from milled part-mold segments. The venting gaps of the mold surfaces are in communication with other means for removing air from the mold
  • Mold cavity to pass through the mold segments radially outward. This is also advantageous in terms of cleaning the vulcanization mold. segmented
  • Vulkanisierformen usually consist of 9 to 17 molding segments, wherein
  • Passenger car tire molds usually consist of 9 - 11 mold segments and commercial vehicle tire molds usually consisting of 9 - 17 mold segments. If the cleaning time, including assembly time for milled shapes for a (puzzle) mold segment about 2 hours, you need for the cleaning of the entire casting according to the mold only 2 hours.
  • venting column are the only venting means within the molding surface.
  • deaerating agents such as cylindrical
  • Vent holes or closable valves is omitted.
  • the appearance of the vulcanized tire is improved.
  • both the winter performance of a vulcanized winter tire and the dry and wet handling performance of a vulcanized summer tire are improved.
  • the venting gap has a width of 30 ⁇ m to 130 ⁇ m, preferably of 50 ⁇ m to 80 ⁇ m.
  • the width of the vent slot is measured perpendicular to its longitudinal extent. The aforementioned width grants one adequate venting, however, the penetration of rubber material of the tire is avoided in the vent slot, so that no heat or barely ejected arise on the heat-pressed tire. In addition, the vent slot does not dirty or clogged or barely.
  • the vent gap has a length of 5 mm to 250 mm, so that the fiction, contemporary ventilation concept can be flexibly constructed.
  • the vent slot may have different shape. It is expedient if the venting gap has a depth of 1.5 mm to 15 mm, preferably 2 mm to 4 mm. This depth provides an optimal compromise between low manufacturing costs due to the lowest possible depth of the venting gap and the resistance to deflection, achieved by a
  • the venting column in the central region of the negative tread pattern are arranged circumferentially and the venting gaps in the shoulder region of the negative tread pattern are arranged transversely to the circumferential direction.
  • the central area is the one immediately adjacent to the two shoulder areas.
  • venting gap in the shoulder region is arranged immediately adjacent and parallel to a negative groove which forms a groove in the profile positive of the tire, wherein the negative groove preferably forms a transverse groove in the profile positive.
  • Adjacent means a distance between 0.5mm and 2mm of the vent slot to the nearest land measured perpendicular to this land so that the air can be well drained from the spaces between lands.
  • venting gap opens radially outward (toward the outside of the vulcanization mold) into a venting channel whose cross-sectional area is greater than the cross-sectional area of the venting gap and whose diameter is preferably 2 mm to 3 mm. This can be at a pending cleaning the Vulkanisierform the venting gap can be easily blown from the outside, with a possibly existing rubber residue can be expelled without residue as a plug.
  • venting gap has the same width over its longitudinal extent, preferably over its longitudinal extent and over its depth extent, so that a venting bore can be specifically set from the rear side of the mold.
  • the invention also relates to a vehicle tire which is vulcanized according to an aforementioned Vulkanisierform.
  • the invention also relates to a method for producing a segmented
  • Vulkanisierform which has for venting the mold cavity vents in the mold surfaces.
  • the invention is characterized in that one uses a mold in which one subsequently introduces the venting column.
  • the water laser method and / or a laser method and / or an electron beam method are used for the subsequent introduction of the ventilation gaps.
  • Fig. 1 is a segmented Vulkanisierform with mold segments
  • FIG. 2 is a perspective view of the forming surface of a mold segment
  • Fig. 3 shows a cross section of a vent slot including venting channel along the
  • FIG. 4 shows a longitudinal section of the venting slot together with the venting channel of FIG. 3
  • FIG. 5 shows a longitudinal section of another vent slot including venting channel.
  • Fig. 6a is a radial section through a mold segment of a vulcanizing mold of the prior art
  • Fig. 6b is a radial section through a mold segment of an inventive
  • Vulcanizing mold Vulcanizing mold.
  • Fig.l is a simplified schematic representation of a segmented
  • Vulcanization mold 1 for vehicle tires 4 with several, to one circumferentially
  • the mold segments 2 are radially movable and form radially inside a mold cavity.
  • the mold segments 2 have on the inside forming surfaces 3.
  • the mold segments 2 continue to have
  • Venting means 5 (not shown), which are in communication with the atmosphere and through which gas from the mold cavity of the vulcanizing mold 1 through the mold segment 2 can be discharged to the outside.
  • FIG. 2 shows a perspective view of the molding surface 3 of a molding segment 2.
  • the molding surface 3 has a negative tread profile with negative profile elements 6 for forming the positive tread profile with positive profile elements of FIG
  • the vulcanizing mold 1 is a casting mold so that the molding segments 2 are integral.
  • Narrow vent gaps 9 have subsequently been introduced into the mold surface in the mold surface 3 by the water-laser method or a comparable method, which forms a venting means associated with the atmosphere by further means.
  • the shoulder region 11 of the forming surface 2 are the
  • Venting column 9 also disposed within the negative profile elements 6. On other venting agents such as Eurovents or cylindrical venting agents.
  • Vent holes are omitted.
  • the venting gaps 9 are preferably adjacent, here at a distance of 1 mm and parallel to the webs 18, which form incisions in the profile positive of the tire arranged.
  • the surface of the venting column 9 of a Negative profile element 6 is about 5-15% of the surface of the negative profile element. 6
  • FIG. 3 shows a cross section of a venting gap 9 together with venting channel 12 along the section A - A of FIG. 2, while FIG. 4 shows the longitudinal section along the section B - B.
  • the vent gap 9 has a width b of 30 ⁇ to 130 ⁇ , preferably from 50 ⁇ to 80 ⁇ .
  • the venting gap 9 opens into the
  • Venting channel 12 whose cross-sectional area is round and larger than the cross-sectional area of the venting gap 9.
  • the diameter d of the venting channel 12 is between 2 mm and 3 mm.
  • the venting gap 9 has a radial depth extension t of 1.5 mm to 15 mm and the venting channel 12 has a radial depth extension 14 of 10 mm to 15 mm. Over the longitudinal extent of the venting gap 10 and over its
  • Depth extension 14 remains the same width b.
  • the length 1 of the venting gap is between 10 mm and 40 mm.
  • Venting channel 12 The longitudinal section of this venting means 5 differs from that of Fig. 4 in that the lower surface of the venting gap 16 funnel-shaped merges into the venting channel 12, while the lower surface of the venting gap 16 of FIG. 4 parallel to the axial direction aR running as a straight line is formed.
  • 6a shows a radial section through a mold segment 2 of a vulcanizing mold 1 of the prior art
  • FIG. 6b shows a radial section through a mold segment 2 of a vulcanizing mold 1 according to the invention.

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

L'invention concerne un moule de vulcanisation (1) servant à vulcaniser des pneus de véhicule, comprenant plusieurs segments de moule (2) pouvant être assemblés en un moule fermé sur sa circonférence. Chaque segment de moule (2) possède, à l'intérieur dans le sens radial, une surface de moule (3) ayant un profil de bande de roulement négatif avec des éléments de profil négatifs (6) pour le moulage du profil de bande de roulement positif avec des éléments de profil positifs, et la surface de moule (3) possède d'étroites fentes de purge d'air (9) servant à évacuer l'air hors de l'espace creux du moule. Une caractéristique essentielle de l'invention est que le moule de vulcanisation est un moule de coulée dont les segments de moule (2) sont monobloc et dans lesquels les fentes de purge d'air (9) sont pratiquées à-postériori. L'invention concerne en outre un procédé de fabrication d'un moule de vulcanisation segmenté.
PCT/EP2015/064326 2014-08-01 2015-06-25 Moule de vulcanisation destiné à vulcaniser des pneus de véhicule et procédé de fabrication d'un moule de vulcanisation WO2016015927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014215248 2014-08-01
DE102014215248.8 2014-08-01

Publications (1)

Publication Number Publication Date
WO2016015927A1 true WO2016015927A1 (fr) 2016-02-04

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PCT/EP2015/064326 WO2016015927A1 (fr) 2014-08-01 2015-06-25 Moule de vulcanisation destiné à vulcaniser des pneus de véhicule et procédé de fabrication d'un moule de vulcanisation

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757800A (zh) * 2018-02-22 2020-10-09 株式会社普利司通 轮胎成型用模具、轮胎成型用模具的制造方法及轮胎
WO2023111221A1 (fr) 2021-12-17 2023-06-22 Compagnie Generale Des Etablissements Michelin Element moulant avec un event recouvert d'un film poreux et procede de fabrication de cet element moulant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1506850A1 (fr) * 2002-05-23 2005-02-16 Kabushiki Kaisha Bridgestone Piece destinee a un moule a pneumatique, procede de production de la piece, moule a pneumatique de type a piece et procede de production du moule a pneumatique de type a piece
EP1529627A1 (fr) * 2003-11-04 2005-05-11 Continental Aktiengesellschaft Procédé de fabrication d'un segment de moule de vulcanisation pour des pneus de véhicule et segment fabriqué par ce procédé
EP1588820A1 (fr) * 2004-04-23 2005-10-26 Sumitomo Rubber Industries Ltd. Moule à évents
EP2095931A1 (fr) * 2008-03-01 2009-09-02 Continental Aktiengesellschaft Dispositif de vulcanisation de poignées de véhicules à l'aide d'un moule de vulcanisation
DE102012104500A1 (de) * 2012-05-24 2013-11-28 Continental Reifen Deutschland Gmbh Vulkanisierform für Fahrzeugreifen
DE102012109723A1 (de) 2012-10-12 2014-04-17 Continental Reifen Deutschland Gmbh Vulkanisierform zum Vulkanisieren von Fahrzeugreifen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1506850A1 (fr) * 2002-05-23 2005-02-16 Kabushiki Kaisha Bridgestone Piece destinee a un moule a pneumatique, procede de production de la piece, moule a pneumatique de type a piece et procede de production du moule a pneumatique de type a piece
EP1529627A1 (fr) * 2003-11-04 2005-05-11 Continental Aktiengesellschaft Procédé de fabrication d'un segment de moule de vulcanisation pour des pneus de véhicule et segment fabriqué par ce procédé
EP1588820A1 (fr) * 2004-04-23 2005-10-26 Sumitomo Rubber Industries Ltd. Moule à évents
EP2095931A1 (fr) * 2008-03-01 2009-09-02 Continental Aktiengesellschaft Dispositif de vulcanisation de poignées de véhicules à l'aide d'un moule de vulcanisation
DE102012104500A1 (de) * 2012-05-24 2013-11-28 Continental Reifen Deutschland Gmbh Vulkanisierform für Fahrzeugreifen
DE102012109723A1 (de) 2012-10-12 2014-04-17 Continental Reifen Deutschland Gmbh Vulkanisierform zum Vulkanisieren von Fahrzeugreifen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757800A (zh) * 2018-02-22 2020-10-09 株式会社普利司通 轮胎成型用模具、轮胎成型用模具的制造方法及轮胎
WO2023111221A1 (fr) 2021-12-17 2023-06-22 Compagnie Generale Des Etablissements Michelin Element moulant avec un event recouvert d'un film poreux et procede de fabrication de cet element moulant
FR3130674A1 (fr) 2021-12-17 2023-06-23 Compagnie Generale Des Etablissements Michelin Element moulant avec un event recouvert d’un film poreux et procede de fabrication de cet element moulant

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