Method and equipment for producing tire

A technology for raw tires and tires, applied in tires, other household appliances, household appliances, etc., can solve the problems of large investment, high manufacturing complexity, and complicated manufacturing of reinforcing bags, and achieve the effect of simplifying the production process and reducing processing waste.

Inactive Publication Date: 2008-12-03
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The applicant has also determined that special measures need to be taken to prevent the steam introduced into the green tire from penetrating into the lining structure coating the inner surface of the tire and thereby compromising the structural integrity of the tire
[0014] Furthermore, the Applicant has found that an expandable annular support of the type disclosed in US 5,853,526 has a high manufacturing complexity and requires sophisticated means for controlling the inflation pressure of the bag to ensure the geometry of the bag throughout the tire building process. shape and dimension stable
Furthermore, the manufacture of the reinforcement bag itself is very complex and said bag is subjected to such significant thermal and mechanical stress that it is necessary to replace the reinforcement bag after some vulcanization cycles
[0015] Applicant has also determined that the large number of expandable ring supports required for operation of the construction plant under normal operating conditions results in a significant investment as well as high management and maintenance costs

Method used

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  • Method and equipment for producing tire
  • Method and equipment for producing tire
  • Method and equipment for producing tire

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Embodiment Construction

[0037] Referring to the drawings, reference numeral 1 generally designates an apparatus for the production of tires according to the invention.

[0038] Equipment 1 is designed to produce tires 2 ( figure 2 ), the tire essentially comprising at least one carcass ply 3, two annular anchoring structures 5a engaged with the circumferential edges of the carcass ply near the area commonly referred to as the "bead" 5, circumferentially applied to the carcass The belt structure 6 of the ply 3 , the tread band 7 superimposed on the belt structure 6 and the two sidewalls 8 circumferentially, wherein the carcass ply 3 is internally coated with a layer of airtight elastic Body material (so-called liner 4 ), sidewalls 8 are applied to the carcass ply 3 in laterally opposite positions and each extend from a respective bead 5 to a respective side edge of the tread band 7 .

[0039] Plant 1 mainly comprises means for building tires 2 running along a building line generally indicated at 9 an...

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PUM

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Abstract

A green tyre (2) is built on a rigid toroidal support (10) externally having a forming surface (10a) of a conformation corresponding to the inner conformation of the tyre. The built tyre (2) is removed from the rigid toroidal support (10) and engaged on an expandable toroidal support (23) comprising a bladder (24). The green tyre (2) engaged on the expandable toroidal support (23) is introduced into a vulcanisation mould (30) and submitted to a vulcanisation cycle.

Description

technical field [0001] The invention relates to a method and an apparatus for producing tyres. Background technique [0002] Tires for wheels generally comprise a carcass structure comprising at least one carcass ply, each having opposite ends engaged with a corresponding annular anchoring structure integrated into an area commonly referred to as the "bead" Back pad. [0003] Associated with the carcass structure is a belt arrangement comprising one or more belt layers arranged in radially superimposed relationship with respect to each other and with respect to the carcass ply, and having a relative The direction of circumferential extension of the tire crosses oriented and / or substantially parallel textile or metal reinforcing cords. Applied to the belt structure at a radially outer position is a tread band, also made of elastomeric material like the other semi-finished products constituting the tyre. [0004] It should be noted that, for the purposes of the description,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/00
CPCB29D30/10B29D30/0645B29D30/0016B29D2030/0622B29D2030/0022B29D2030/0647
Inventor M·马尔基尼F·马里亚尼P·米萨尼M·坎图
Owner PIRELLI TYRE SPA
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