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Method for loading raw bicycle tires in a vulcanization mold and apparatus for molding and vulcanization

A technology of vulcanizing molds and raw tires, which is applied to household appliances, other household appliances, tires, etc.

Active Publication Date: 2022-04-01
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, as noted above, bicycle tires typically do not have a reinforcing belt interposed between the carcass ply (or carcass plies) and the tread band.

Method used

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  • Method for loading raw bicycle tires in a vulcanization mold and apparatus for molding and vulcanization
  • Method for loading raw bicycle tires in a vulcanization mold and apparatus for molding and vulcanization
  • Method for loading raw bicycle tires in a vulcanization mold and apparatus for molding and vulcanization

Examples

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Embodiment Construction

[0129] An apparatus for molding and vulcanizing green tires for bicycles according to the invention is indicated generally by reference numeral 1 ( Figure 16-18 ).

[0130] The invention is designed for the processing of a tire 2 for a bicycle, which is schematically shown in Figure 12 Types in, for example, road bikes, track bikes, mountain bikes, e-bikes, etc.

[0131] A radially inner surface 2a substantially facing the geometric axis of rotation "X" of the tire 2 and a radially outer surface 2b substantially facing away from the geometric axis of rotation "X" may be defined in the tire 2 .

[0132] A tire 1 for bicycles has a carcass structure 3 comprising at least one carcass ply 4 having mutually parallel cords embedded in an elastomeric matrix.

[0133] The axially opposite end flaps 4a of the carcass ply or plies 4 are joined to respective bead cores 5, ie annular anchoring structures integrated in the area generally identified by the designation "bead", At the be...

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Abstract

Constructing a green tire (2) for bicycles comprising at least one carcass ply (4) having axially opposite end flaps (4a) engaged with respective bead cores (5) ) and a tread band (6) applied in a radially outer position around said at least one carcass ply (4). The built tire (2) is removed from the building drum and is shaped such that the tread band (6) is translated in radially outward direction relative to the bead core (5), thereby imposing radial pressure on the tire (2). A profile that is convex in cross-section in an outward direction. The formed tire is engaged by means of a transfer member (31) comprising a clamping device (30) which holds the tire in suspension and by axially positioning the green tire's axial centerline plane (M) to an axial reference ( 51) Loading the tire into the vulcanization mold (101), said axial reference being arranged at a predetermined height along the reference axis (K) of the central body (103) of the vulcanization mold (101).

Description

technical field [0001] The present invention relates to a method of loading green bicycle tires in a vulcanization mold, and an apparatus for molding and curing said green bicycle tires. Background technique [0002] The construction of tires for bicycles generally applies one or more carcass plies according to a cylindrical configuration around the outer surface of a building drum. Each bead core of a pair is fitted or applied around one of the axially opposite end flaps of the carcass ply. The end flaps are then turned up around the corresponding bead cores. The tread band is then applied around the carcass ply against the building drum in an axially central position with respect to the bead core. [0003] The mutual axial distance between the bead cores remains constant throughout the building process (including the application of the tread band). Aspects of this process represent unique features that distinguish bicycle tires from those of motor vehicles. For tires f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/06B29D30/00
CPCB29D30/0603B29D2030/0022B29D30/0016B29D30/0645B29D30/18B29D2030/0622B29D2030/0647
Inventor D·L·孔蒂B·洛迪G·L·博西奥
Owner PIRELLI TYRE SPA