WO2015165431A1 - Procédé et dispositif de préchauffage d'ébauches de pneumatiques pour le processus de fabrication de pneumatiques - Google Patents

Procédé et dispositif de préchauffage d'ébauches de pneumatiques pour le processus de fabrication de pneumatiques Download PDF

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Publication number
WO2015165431A1
WO2015165431A1 PCT/DE2015/000121 DE2015000121W WO2015165431A1 WO 2015165431 A1 WO2015165431 A1 WO 2015165431A1 DE 2015000121 W DE2015000121 W DE 2015000121W WO 2015165431 A1 WO2015165431 A1 WO 2015165431A1
Authority
WO
WIPO (PCT)
Prior art keywords
green
tire
preheating
tires
green tire
Prior art date
Application number
PCT/DE2015/000121
Other languages
German (de)
English (en)
Inventor
Rüdiger MEINCKE
Original Assignee
Harburg-Freundenberger 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-Freundenberger Maschinenbau Gmbh filed Critical Harburg-Freundenberger Maschinenbau Gmbh
Priority to DE112015002050.0T priority Critical patent/DE112015002050A5/de
Publication of WO2015165431A1 publication Critical patent/WO2015165431A1/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
    • B29D30/0005—Pretreatment of tyres or parts thereof, e.g. preheating, irradiation, precuring
    • 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
    • B29D30/0662—Accessories, details or auxiliary operations
    • B29D2030/0666—Heating by using fluids
    • B29D2030/0674—Heating by using non-fluid means, e.g. electrical heating

Definitions

  • the invention relates to a preheating device for green tires for increasing the material temperature of a green tire, comprising a thermal energy source and a device for supporting at least one green tire.
  • the invention relates to a method for preheating of green tires by a preheating device for green tires and a method for producing tires in which green tires are vulcanized.
  • 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.
  • a suitable heating medium with a corresponding temperature and under pressure is introduced into the interior of the green tire.
  • the green tire within the mold is determined by a device such that a largely pressure-tight chamber is formed within the green tire.
  • Particularly thick areas of the green tire are the treads. Relatively thin, the side walls are formed.
  • the reason for this significant difference in thickness are the additional tire components arranged in the area of the tread, such as steel belt, belt cover layer and the considerably thicker rubber / rubber layer compared to the side wall.
  • This considerably thicker rubber / rubber layer has more wall thickness not least because it comprises the actual tire profile that is produced during the vulcanization process.
  • the tread area or the thick-walled rubber / rubber compound provided there must be heated sufficiently that it can flow plastically and can be pressed by the vulcanization pressure into the profile negative die of the green tire mold of the tire vulcanizing machine.
  • the plastic flowability increases in a wide range with increasing heating of the material, so that less pressing pressure is required to reliably produce the profiling can.
  • preheating of the green tire occurs.
  • the preheating is preferably carried out via the introduction of thermal radiation.
  • This can be, for example, an infrared radiation (IR radiation).
  • IR radiation infrared radiation
  • laser diodes or other energy sources based on microwaves.
  • hot air or other hot gas may also be flowed on.
  • IR heat radiation source in addition to the electromagnetic radiation of an IR heat radiation source, other thermal energy sources are suitable, provided that a heat energy transport over an air gap is possible.
  • Preference is given to non-contact heating in order to avoid damage to the material in the event of contact with heating elements.
  • FIG. 1 shows a schematic representation of the preheating device (1) for green tires (100) for carrying out a green tire preheating before being fed into the shape of a tire vulcanizing machine.
  • the green tire (100) is usually located in a storage device before being fed to the mold of a tire curing machine.
  • the storage device takes the green tires (100) in a horizontal, a vertical or any location.
  • the green tire preheating apparatus (1) for performing green tire preheating prior to feeding into the shape of a tire vulcanizing machine promotes preheating in any position of the green tires (100), for example, when the stocker is constituted by a basket.
  • the horizontal orientation of the green tire (100) in the storage device is chosen, since in many cases the tire vulcanizing machines can pick up the green tires (100) in this orientation, thus saving handling steps in feeding.
  • the green tire (100) is located on the green tire housing (20) and abuts with its bead (130).
  • a centering device (21) may preferably be provided which is designed in such a way that the green tire (100) is mounted centrally in order to ensure an all-round, defined distance from the radiant heat source (10).
  • the centering device (21) can be designed as a centering nose or centering ring.
  • the green tire (100) is preheated to approximately 50 ° C. in the region of the tread (110) just before being fed to the vulcanization process tire curing machine.
  • the tread (110) provides, compared to the other zones of the green tire (100), i. In particular, the side wall (120) and the bead (130), the area with the largest wall thickness and thus accumulation of material. In the area with the largest wall thickness and thus accumulation of material, the thermal energy input must be higher to the green tire (100) to an overall uniform To heat the temperature.
  • the preheating is preferably carried out in this embodiment by a radiant heat source (10), which is in particular an IR radiation source or at least one laser diode.
  • the radiant heat source may be controllable to heat various tire diameters and tread wall thicknesses.
  • the teaching of the invention recognizes that a targeted preheating of green tires (100) in particular, but not only in the region of the largest wall thicknesses, ie, the accumulation of material or a uniform preheating of the entire green tire (100) before being fed into the form of a Reifenvulkanisiermaschine in various respects offers significant benefits.
  • the flow properties are improved, ie. the rubber / rubber material has lower viscosity and or improved thixotropic properties at higher temperatures.
  • This improved flow characteristics resulting in a higher temperature level of the material, aids in molding the green tire into the shape of the tire curing machine.
  • a further technical advantage results from the reduced vulcanization time of the green tire (100) in the tire vulcanizing machine in that the heating time of the green tire (100) in the mold is significantly shorter, starting from the higher preheating temperature level. This supports the higher output of the tire vulcanizing machine.
  • the time required for preheating has no relevance to the application of the tire vulcanizing machine, since the preheating is realized outside and independently of the tire vulcanizing machine.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de préchauffage d'ébauches de pneumatiques pour le processus de fabrication de pneumatiques. Ledit procédé et ledit dispositif servent à améliorer la fabrication de pneumatiques. L'invention concerne un dispositif de préchauffage d'ébauches de pneumatiques (1) servant à augmenter la température du matériau d'une ébauche de pneumatique. Ledit dispositif comporte une source d'énergie thermique et un dispositif destiné à retenir au moins une ébauche de pneumatique, la source d'énergie thermique étant une source de chaleur rayonnante (10), si bien que l'énergie thermique est introduite sans contact dans le matériau de l'ébauche de pneumatique. Les procédés de préchauffage et de fabrication de pneumatiques comprennent le préchauffage sans contact des ébauches de pneumatique.
PCT/DE2015/000121 2014-04-30 2015-03-11 Procédé et dispositif de préchauffage d'ébauches de pneumatiques pour le processus de fabrication de pneumatiques WO2015165431A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112015002050.0T DE112015002050A5 (de) 2014-04-30 2015-03-11 Verfahren und Vorrichtung zur Vorwärmung von Reifenrohlingen für den Reifenherstellungsprozess

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014006480 2014-04-30
DE102014006480.8 2014-04-30

Publications (1)

Publication Number Publication Date
WO2015165431A1 true WO2015165431A1 (fr) 2015-11-05

Family

ID=53039134

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/000121 WO2015165431A1 (fr) 2014-04-30 2015-03-11 Procédé et dispositif de préchauffage d'ébauches de pneumatiques pour le processus de fabrication de pneumatiques

Country Status (2)

Country Link
DE (2) DE112015002050A5 (fr)
WO (1) WO2015165431A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019004503U1 (de) 2019-11-05 2020-02-27 Gawronski Gmbh Vorrichtung zum Vorwärmen von Reifenrohlingen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867606A (en) * 1973-10-15 1975-02-18 Raytheon Co Microwave heating apparatus for rotatable articles
US4456806A (en) * 1981-08-06 1984-06-26 Sumitomo Rubber Industries, Ltd. Method and apparatus for the high frequency preheating of elastomeric products
EP0127256A1 (fr) * 1983-05-30 1984-12-05 Kazumasa Sarumaru Procédé de moulage d'un pneumatique
EP1177872A2 (fr) * 2000-07-31 2002-02-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.) Dispositif pour chauffer un pneumatique cru
US20040069391A1 (en) * 2002-10-10 2004-04-15 Kabushiki Kaisha Kobe Seiko Sho. Method and apparatus for preheating raw tire
US20100089906A1 (en) * 2007-03-02 2010-04-15 Sidel Participations heating plastics via infrared radiation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745291A (en) * 1972-02-18 1973-07-10 Raytheon Co Microwave heating applicator
JPH02112911A (ja) * 1988-10-21 1990-04-25 Bridgestone Corp 生タイヤの予熱装置
US6620367B1 (en) * 1999-08-17 2003-09-16 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tire vulcanizing method and tire vulcanizer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867606A (en) * 1973-10-15 1975-02-18 Raytheon Co Microwave heating apparatus for rotatable articles
US4456806A (en) * 1981-08-06 1984-06-26 Sumitomo Rubber Industries, Ltd. Method and apparatus for the high frequency preheating of elastomeric products
EP0127256A1 (fr) * 1983-05-30 1984-12-05 Kazumasa Sarumaru Procédé de moulage d'un pneumatique
EP1177872A2 (fr) * 2000-07-31 2002-02-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.) Dispositif pour chauffer un pneumatique cru
US20040069391A1 (en) * 2002-10-10 2004-04-15 Kabushiki Kaisha Kobe Seiko Sho. Method and apparatus for preheating raw tire
US20100089906A1 (en) * 2007-03-02 2010-04-15 Sidel Participations heating plastics via infrared radiation

Also Published As

Publication number Publication date
DE112015002050A5 (de) 2017-01-26
DE102015003349A1 (de) 2015-11-05

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