Method for building belt assembly for tyres for vehicle wheels
A belt and component technology, applied in tires, applications, home appliances, etc., can solve problems such as belt layers that are difficult to combine with cross belt structures
Active Publication Date: 2022-07-22
PIRELLI TYRE SPA
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0042] However, according to the applicant, if such belt layers, each defined by a semi-finished product shaped as a substantially flat strip cut to size, are placed on a substantially circular forming drum, it is extremely difficult to be able to Automatic (i.e. not manual) bonding of the ends of the belt layers of the cross-belt structure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0091] exist figure 1 , an example of a tire that can be produced in a facility for producing wheel tires is indicated with the reference number 2 . Such tires can be produced by implementing the method of the present invention.
[0092] The tire 2 has a median plane A perpendicular to its axis of rotation R (at figure 2 The position of the axis of rotation R relative to the section of the tire 2 is shown in an indicative and schematic way). The median plane A divides the tire 2 into a first axial half 2a and a second axial half. For simplicity of illustration, figure 2 Only the first axial half 2a of the tire 2 is shown, the other half is substantially a mirror image of the first axial half 2a (except for the possibly asymmetrical tread pattern with respect to the above-mentioned median plane A).
[0093] The tire 2 generally comprises a carcass structure 3 with one or two carcass plies 4a, 4b. A layer of impermeable elastic material or so-called liner 5 is applied in a ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
A method for building a belt assembly for a tire of a vehicle wheel is described. The method includes constructing a crossing belt structure on a substantially cylindrical first forming drum (25). Depending on the type of tire to be produced, it is possible to select whether to construct a belt assembly having a cylindrical shape or a belt assembly having a circular ring shape. In order to build a belt assembly having a cylindrical shape, at least one zero belt layer is placed on the first forming drum (25) in a radially outer position with respect to the intersecting belt structure. In order to build a belt assembly having a toroidal shape with the method, the intersecting belt structure is picked up from the first forming drum (25), the intersecting belt structure is toroidally shaped, the toroidally shaped intersecting belt structure is transferred onto a second forming drum (210), and the first forming drum (25) and the second forming drum (210) form a belt assembly having a toroidal shape. And at least one zero-degree belt layer is placed on the second forming drum (210) in a radially outer position with respect to the annularly shaped cross belt structure.
Description
technical field [0001] The present invention relates to a method for constructing a belt assembly for a wheel tire. Background technique [0002] Wheel tires generally include a carcass structure, a crown structure arranged in a radially outer position relative to the carcass structure, and a pair of sidewalls as the axially outer surface of the tire relative to a median plane perpendicular to the same tire. [0003] The carcass structure includes at least one carcass ply formed from reinforcing cords incorporated in a substrate of elastomeric material. The carcass ply has opposing end edges each engaged with a plurality of annular anchoring structures. These annular anchoring structures are arranged in the area of the tire generally identified by the designation "bead" and they are generally formed by a generally circumferential annular insert or "bead core" on the upper edge of the annular insert or "bead core" The radially outer position applies at least one filler in...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/70B29D30/22B29D30/24B29D30/26B29D30/20
CPCB29D2030/204B29D2030/209B29D30/20B29D30/22B29D30/242B29D30/2607B29D30/70
Inventor D·孔蒂C·德科尔G·E·波尔蒂纳里
Owner PIRELLI TYRE SPA