Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin

Thierry Ducros

Stéphane Ravat

Michel Deboeuf

Stephane Ravat

Mickael Rouby

Clement Dubois

Clément Dubois

Grégory Marcet

Mickaël Rouby

A method for winding a rubber strip onto a form of revolution includes steps of: forming a strip of predetermined length, applying front and rear edge marks to the strip, driving the strip towards the form, arranging a front edge of the strip on the form, and driving the form to wind the strip onto the form. In a first phase, the driving of the strip and the driving of the form are synchronized so as not to modify the length of the strip. In a second phase, the driving of the strip and the driving of the form are controlled depending on an angular position of the form and on a position of the rear edge mark, in order to vary relatively a displacement speed of the rear edge mark and a displacement speed of the front edge mark, to compensate for variations in the length of the strip.

Method and installation for winding a rubber strip onto a form of revolution

The method includes the step of running a cutting means between two threads of the reinforcing ply. The method proceeds with the steps of measuring; a discrepancy between an actual cutting line (A'B&#x2032;C&#x2032;) and a theoretical cutting line (ABC) is measured and determining a point of intersection of the actual cutting line (B&#x2032;) with a reference longitudinal line (XX&#x2032;) placed on the strip. The actual cutting line (B&#x2032;C&#x2032;) of that part of the rubber profiled elements that are not superposed with the reinforcing ply is longitudinally offset (Z) with respect to the theoretical cutting line (BC) so that the actual cutting line (B&#x2032;C&#x2032;) meets the reference longitudinal line (XX&#x2032;) at the point of intersection (B&#x2032;) of the reinforcing ply (A&#x2032;B&#x2032;) with the reference longitudinal line (XX&#x2032;). The rubber profiled elements that are not superposed with the reinforcing ply are cut along the said actual cutting line.

Method for cutting a strip of tire reinforcing product comprising wires at an angle to the longitudinal direction of the product

Device for cutting and transferring a length of strip let off a continuous strip, comprising a first face and a second face to be laid on a rotary receiving surface and containing

Device for cutting and transferring a strip for the assembly of a tire

A cutting blade, which is useable for cutting a reinforcing strip into reinforcing plies, includes one or more notches disposed at given intervals. When a volume of rubber separating two reinforcing threads is cut by the cutting blade, bridges of rubber are left between a rear edge of a first reinforcing ply and a front edge of a second reinforcing ply.

Method and device for the perforated cutting of a reinforcing ply

Cutting device for cutting a reinforcing ply (N) formed of a set of portions of thread, of given length, coated in a rubber compound, laid parallel to one another and making a given theoretical angle (a) with the longitudinal direction of the ply, characterized in that it includes a first element able, without proceeding to cut the said ply (N), to estimate the actual angle of the threads with the longitudinal direction (XX') of the device and a second element able to cut the ply (N) at the actual angle (a+da) estimated by the first element.

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Clermont-Ferrand, France

Thierry Ducros