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Device and method for laying a reinforcing ply on a tyre-building drum with cutting on-the-fly

A technology for reinforcing ply and tire molding, applied in the direction of tires, applications, household appliances, etc., can solve the problems of involving operators, achieve the effect of compact workstations and reduce cycle time

Pending Publication Date: 2021-07-23
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, when cutting operations are performed manually, this permanently involves the operator, who must remain at the station during the entire laying cycle

Method used

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  • Device and method for laying a reinforcing ply on a tyre-building drum with cutting on-the-fly
  • Device and method for laying a reinforcing ply on a tyre-building drum with cutting on-the-fly
  • Device and method for laying a reinforcing ply on a tyre-building drum with cutting on-the-fly

Examples

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Embodiment Construction

[0024] The present invention relates to a plant 1 for building tires, more particularly pneumatic tires.

[0025] The invention is particularly suitable for the molding of pneumatic tires for heavy goods vehicles whose maximum permissible load is generally greater than 3.5 tons, or for civil engineering machines, which are therefore large in size and very heavy.

[0026] However, the apparatus 1 may be perfectly adapted for the molding of pneumatic tires for private passenger type vehicles, two-wheeled vehicles and the like.

[0027] A forming plant 1 , hereinafter "plant" 1 , firstly comprises a supply system 2 arranged to supply said forming plant with a strip 3 , referred to as a "continuous strip", which is conveyed in a longitudinal direction L3, from Figure 1A It can be clearly seen in .

[0028] Said strip 3 is said to be "continuous" because it is in one piece along the longitudinal direction L3 over a relatively large length which is much greater than that obtained b...

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Abstract

The present invention relates to a tyre building device (1) which comprises a synchronizing unit (30) designed to automatically synchronize a cutting movement (M10) for cutting a continuous strip with a winding movement (M20) for winding the said continuous strip (3) onto a drum (20), so as to drive the cutting tool (10) in movement across the entire width (W3) of the continuous strip (3) so as to detach a reinforcing ply (4) from the continuous strip (3) while the forward front (4F) of the said reinforcing ply (4), formed by the forward front of the continuous strip (3), is engaged on the drum (20) and the continuous strip (3) is being driven with the said reinforcing ply (4) at a non-zero speed in the direction of winding (S20) so as to accompany the on-going winding movement (M20).

Description

technical field [0001] The present invention relates to the general field of tire building, in particular pneumatic tires. Background technique [0002] It is a known practice to reinforce a pneumatic tire with a reinforcing ply comprising reinforcing threads embedded in the rubber layer and parallel to each other at a predetermined angle (called "ply angle") with respect to the longitudinal direction of the reinforcing ply ground setting. [0003] The laying of these plies is usually carried out on drums, it is possible in particular to superimpose the plies so that the reinforcing threads cross from one layer to the other, the reinforcing ply in question is wound on the drum and said reinforcing ply is obtained by laying The front and rear ends of the reinforcing ply are connected to be self-closed. [0004] In order to precisely cover the circumference of the drum, and to abut the ends of the reinforcement ply without gaps or overlaps, it must be cut and laid very accur...

Claims

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Application Information

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IPC IPC(8): B29D30/46B29D30/30B26D3/00
CPCB29D30/46B29D30/3007B26D3/003B26D1/605B26D5/22B26D5/32B26D5/34
Inventor O·卡雷奥J-P·佩索M·瓦列霍克里亚多
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN