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Method and plant for building tyres

A complete set of equipment and tire technology, applied in the field of tire manufacturing, can solve problems such as process difficulties, achieve stable and precise positioning, and improve operational flexibility

Active Publication Date: 2016-07-27
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The applicant has also demonstrated that the use of a substantially rigid toroidal forming drum (with a fixed geometry of the type described in US2009 / 0020200) tends to introduce process difficulties and criticalities, but also concerns with equipment and for installation Serious logistical problems related to the space required for the complete plant for manufacturing

Method used

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  • Method and plant for building tyres
  • Method and plant for building tyres
  • Method and plant for building tyres

Examples

Experimental program
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Embodiment Construction

[0120] With reference to the above-mentioned figures, reference number 1 designates as a whole a plant for building tires for vehicle wheels, said plant being arranged to carry out the process according to the invention.

[0121] The plant 1 is set up to obtain tires 2 ( Figure 6 ), said tire 2 essentially comprising at least one carcass ply 3 , preferably internally covered with a layer of elastomeric material impermeable to air, or a so-called liner 4 . Two annular anchoring structures 5 are engaged with respective end flaps 3a of the carcass ply / 3, each annular anchoring structure 5 comprising a so called bead core 5a, preferably radially The elastomer filling body 5b is carried at the outward position. The annular anchoring structure 5 engages proximally in an area generally referred to as the "bead" 6 where the engagement between the tire 2 and a corresponding mounting rim (not shown) is generally present.

[0122] A belt structure 7 is applied circumferentially around...

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PUM

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Abstract

A carcass sleeve (12) is situated in radially external position with respect to a toroidal forming drum (23) arranged in a first radially contracted operative condition. The carcass sleeve (12) is shaped according to a toroidal configuration while the forming drum (23) is positioned inside the carcass sleeve (12). During shaping of the carcass sleeve, the forming drum (23) is radially expanded up to a second radially expanded operative condition. Upon completed shaping, the carcass sleeve (12) is coupled to the forming drum (23) in the second operative condition. The forming drum (23), coupled to said shaped carcass sleeve (12), is arranged in proximity to at least one device (41) for building at least one belt layer (7a) at a radially external position relative to said shaped carcass sleeve (12).

Description

technical field [0001] The present invention relates to methods, processes and plants for the manufacture of tyres. [0002] More particularly, the present invention relates to methods, processes and equipment for building green tires which are subsequently subjected to a vulcanization cycle in order to obtain finished products. Background technique [0003] Tires for vehicle wheels generally comprise a carcass structure comprising at least one carcass ply with respective opposing end flaps connected to respective annular An anchoring structure is engaged, said annular anchoring structure being incorporated in an area commonly referred to as the "bead", the inner diameter of which substantially corresponds to the so-called "fitting diameter" of the tire fitted on the respective mounting rim. [0004] The carcass structure is associated with a belt structure which can comprise one or more belt layers superimposed radially with respect to each other and the carcass ply, the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/36
CPCB29D30/1621B29D30/1628B29D30/36B29D30/247B29D2030/2657B29D30/08B29D2030/265B29D30/24B29D30/244B29D30/245B29D2030/2642
Inventor O·豪普特M·马尔基尼S·孟塔纳里M·马里亚尼D·L·孔蒂
Owner PIRELLI TYRE SPA