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Method for laying down at least an elastic element in a process for producing tyres for vehicles, process for producing tyres for vehicles and apparatus for laying down at least one elastic element

A technology of elastic elements and manufacturing methods, applied in tires, applications, household appliances, etc., can solve the problems of not being able to follow elastic elements, laying, etc.

Active Publication Date: 2010-03-24
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0028] The Applicant has demonstrated that the device disclosed in US 2003 / 0213863 cannot be produced precisely according to the design specifications when unforeseen events occur simultaneously, for example during the transition of said elastic element winding step or upstream of the area where the elastic element itself is laid. way to follow the laying profile of the elastic elements on the subsequent forming drum

Method used

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  • Method for laying down at least an elastic element in a process for producing tyres for vehicles, process for producing tyres for vehicles and apparatus for laying down at least one elastic element
  • Method for laying down at least an elastic element in a process for producing tyres for vehicles, process for producing tyres for vehicles and apparatus for laying down at least one elastic element
  • Method for laying down at least an elastic element in a process for producing tyres for vehicles, process for producing tyres for vehicles and apparatus for laying down at least one elastic element

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Embodiment Construction

[0073] Referring to the accompanying drawings, a general-purpose tire manufactured using the control method and process of the present invention is generally indicated by 1 .

[0074] For the production of tires 1 ( figure 1 ), providing a carcass structure 2 and a belt structure 3 suitably associated with each other. Furthermore, a tread band 4 is associated outside said belt structure 3 .

[0075] At the radially inner end of the carcass structure 2, a so-called bead 7 may be produced in association with a filler insert 7b, within which at least one "bead core" 7a is provided.

[0076] Applied to the side surfaces of the carcass structure 2 are sidewalls 5 of elastomeric material, each sidewall 5 extending from one side edge of the tread band 4 to a corresponding bead 7 .

[0077] It should be understood that the radially outer end of each sidewall 5 may be interposed between the edge of the tread band 4 and the carcass ply 6 ("underside sidewall" type configuration), or t...

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Abstract

Method of laying down at least one elastic element in a process for producing tyres for vehicles, said method comprising the following steps: determining a first parameter representative of a laying speed at which at least one elastic element is laid down around a tyre forming drum; determining a second parameter representative of a percent elongation to be applied to said elastic element; adjusting, as a function of said first and second parameters, a rotation speed of a control roller positioned upstream of said forming drum and having a radially external surface at least partly in engagement with said elastic element for controlling the laying profile of said at least one elastic element. Also described is a process for producing tyres for vehicles and an apparatus for carrying out said laying method.

Description

technical field [0001] A first aspect of the invention relates to a method of laying at least one elastic element in a manufacturing method for manufacturing a vehicle tire. [0002] On the other hand, the present invention also relates to a method of manufacturing vehicle tires, and on the other hand, to a device for laying at least one elastic element in the method of manufacturing vehicle tires. Background technique [0003] Here and in the following text of this description and the appended claims, by means of the laying curve of the elastic element, it is intended to investigate the determination of the tension of the elastic element as a function of the time of application of the elastic element to the forming drum. [0004] Furthermore, "elastic element" is intended to mean a continuous strand element (assembly of one or more fibrous elements or strands) of fabric or metallic material covered with elastomeric material having at least one strand. [0005] Vehicle tire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/16B29D30/30
CPCB29D2030/4456B29D30/30B29D2030/4437B29D30/16
Inventor P·达莱A·韦尔加尼
Owner PIRELLI TYRE SPA
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