Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Michelin Recherche Et Techniques S.a.

Christophe Bessac

Mickael Rouby

Gilles Walrand

Patrice Monnereau

Franck Daumas

Alexandre Laval

Matthieu Lutz

Frédéric Pialot

Stéphane Oraison

Richard Audigier

Jean-Claude Delorme

Stephanie Verleene

Clement Dubois

Alain Sevaille

Clément Dubois

Guy Chevrel

Olivier Fuchs

Lucie Chevrel

Yorrick Bunge

Gilles Bonhomme

Clément Nagode

Alexis Dechelle

Mickaël Rouby

Stéphanie Brochet

A device for assembling an airless tire () comprising a hub () of central axis (Z), a peripheral annular band () and a plurality of spokes () that connect the hub () to the peripheral annular band () comprises a plurality of pressing sub-assemblies () each comprising pushers () for pressing the feet () of the spokes () against the hub () and the peripheral annular band () respectively, as () and each hold a lever () that makes it possible to transmit a clamping force (F, F) to the pusher () while ensuring elastic radial suspension of the pusher () vis-à-vis the traveller () and therefore against the foot () of the spoke and the hub () or the peripheral annular ring () well as travellers () that are mounted radially movably under the control of a drive system respectively.

Device for assembling the spokes of a tire for a wheel by means of pushers that are actuated and elastically suspended by levers

The cutting system is configured to cut a continuous strip which extends lengthwise in a longitudinal direction and widthwise between a first edge and a second edge into strips. The cutting system includes a drive device which imparts to the continuous strip a feed speed, a first cutting roller and a contrarotating second cutting roller that cooperate to cut the continuous strip across its full width. The first cutting roller is provided with a first helical blade and is driven in rotation A variable synchronizer makes it possible to select and to modify the synchronization ratio between the rotational speed of the first cutting roller and the non-zero forward speed of the continuous strip in such a way as to be able to adjust the cutting angle according to which the cross-section of the continuous strip is oriented with respect to the longitudinal direction of the continuous strip.

System for cutting strips using helical knives and corresponding cutting method

The manipulator device includes a pedestal and a carrying mechanism which carries a platform and which forms an articulated triangle comprising: a first arm borne by a first carriage with a first pivot link whose axis forms a first vertex of the triangle, a second arm borne by a second carriage with a second pivot link whose axis forms a second vertex of the triangle, a seat situated at the intersection of the first arm and of the second arm, which forms a third pivot link whose axis is parallel to the first pivot axis and the second pivot axis and forms a third vertex of the triangle. A module is provided for servocontrolling the translational movements of the first carriage and the second carriage with respect to the pedestal. A yaw orientation interface comprises a fourth pivot link, by which the platform is articulated on the seat, both relative to the first arm and relative to the second arm, about a fourth pivot axis which is coaxial to the third pivot axis.

Manipulator device having a triangular architecture and installation for manufacturing tires using such a manipulator device for placing strips

A method for manufacturing a tire () comprises a step of positioning a reinforcing ply () in a rubber material having grooves () such that the reinforcing ply () extends through the grooves (), and of crosslinking the tire () based on uncured rubber material while hot moulding the latter, with the reinforcing ply () being pushed against the bottom of the grooves ().

Method for manufacturing a tire with reinforced tread blocks

A device for cutting the profile of a tyre tread (B) in a profiled element made of a raw rubber mixture comprises a frame () supporting a cutting assembly () and travel means () which make it possible for said profiled element (B) to be cut to travel in front of said cutting assembly (), said cutting assembly () comprising at least one cutter () for cutting a longitudinal groove (S) in the outer face of said profiled element (B) and means () for inducing vibration in said cutter () in a transverse direction perpendicular to the direction of travel (X-X′) of said profiled element.

Device for cutting a profile of a tire tread in a rubber profiled element, and cutting method using such a device

The invention is directed to a production installation () that realizes production of a semi-finished product () having at least one unvulcanized elastomeric layer () and a cover layer () assembled therewith. The invention is also directed to a method for producing a semi-finished product () for use in tire production.

Production of a layered semi-finished product for use in tire production

A method for manufacturing a tread () based on uncured rubber material comprises the steps of forming a green form () of tread based on uncured rubber material having at least one tread pattern () block (), each tread pattern () block () having a central portion () and at least one lateral portion () extending along the central portion (), of mounting at least one reinforcing ply () on at least a part of the central portion (), and of covering the central part () with the aid of the lateral portion () in order that the tread pattern () block () envelops the reinforcing ply ().

Method for manufacturing a tire with obliquely reinforced tread blocks

The invention is directed to a posing assembly () that effects transfer and posing of a semifinished product () that is destined for inclusion in a tire. The invention is also directed to a tire production system () for transferring and posing a semi-finished product () that is destined for inclusion in a tire, which system includes the disclosed posing assembly. A method is provided for transferring and posing a semi-finished product () upon a rotating forming drum () having a circumferential forming surface () during a product posing cycle, which method includes a step of providing a tire production system as disclosed.

Transfer and posing of a semi-finished product destined for use in tire production

The method for the coextrusion of a complex profiled element made up of the assembly of profiled elements formed from distinct rubber compounds. A coextrusion machine comprises upstream and downstream extruders which deliver into an extrusion cavity. A first profiled element, formed of the first rubber compound, is created. The first profiled element comprises at least a first profiled-element portion which is intended to form a longitudinal insert, a base of which is in continuity of material with the first profiled element. A complex profiled element formed of the first and second rubber compounds is created. The insert is circulated between walls of a channel extend in a longitudinal direction between the upstream profiling blade and the downstream profiling blade and together form a concave surface open towards the inside of the extrusion cavity in such a way that the bringing-together of the lateral walls of the insert with the second compound takes place only in the downstream gap.

Extrusion head with channels for producing inserts in a profiled band for manufacturing a pneumatic tire and corresponding extrusion method

A torpedo for an extruder comprises: longitudinal member () which is provided at the periphery thereof with a plurality of thread portions () which protrude outwards and which are spaced apart in the circumferential direction; a plurality of sluice blades () which are mounted so as to be movable on the longitudinal member and which are partially engaged in apertures () of the longitudinal member, the longitudinal member () and the sluice blades () being provided with complementary radial guiding surfaces () which are in contact with each other; and adjustment means () for radially displacing the sluice blades relative to the longitudinal member. The sluice blades extend through the spaces between the thread portions, respectively. The thread portions () and the sluice blades () are provided with complementary radial guiding surfaces ().

Torpedo for extruder

ABSTRACT This weaving machine () includes a structure () able to support a plurality of warp threads () extending in a first direction, a heddles mechanism () capable of selectively moving at least some of the plurality of warp threads () to form first and second sheets () of warp threads, and at least one weft-thread feed spool (). The weaving machine () also includes at least one support shuttle () for the feed spool and an actuating device () able to control a movement of the shuttle () between the first and second sheets () of warp threads in at least one second direction transverse to the first direction, in both senses relative to the second direction, to continuously lay the weft thread () coming from the feed spool () between the sheets () and in the second direction.

Weaving machine and corresponding weaving method

A head (), for the co-extrusion of a complex rubber profiled element, includes a lower wall () of cylindrical profile, a first extrusion unit (B) having a first extrusion duct () divided into various sub-ducts (----), a first profiling blade () defining a first shaping profile (P) that is discontinuous, a second extrusion unit (B) including a second extrusion duct () divided into various sub-ducts (----), a second profiling blade () including at least one tooth (---) situated in the continuation of a divider (---), and this second profiling blade (P) incorporating at least one third extrusion duct, each outlet of a third extrusion duct closely adjoining a tooth (---) of the second profiling blade (), and a third profiling blade () defining a final shaping profile (P).

Head for the co-extrusion of a complex rubber profiled element intended for the manufacture of a tire

A head is provided for the co-extrusion of a complex rubber profiled element for the manufacture of a tire. The head makes it possible to co-extrude a sublayer and a tread with inserts. To this end, the head includes, from upstream to downstream: a) a first extrusion duct divided into various sub-ducts, b) a discontinuous first profiling blade, c) a second extrusion duct divided into various sub-ducts, d) a discontinuous second profiling blade incorporating at least one third extrusion duct in the continuation of a divider, and e) a first profiling blade having a projecting tooth in front of and next to each outlet of a third duct in the transverse direction.

Co-extrusion head for co-extruding complex rubber profile section for manufacturing a tire

Method for fabricating a three-dimensional object by successive consolidation, layer by layer, of selected regions of a layer of powder, consolidated regions corresponding to successive sections of the three-dimensional object, comprising in order:

Method and apparatus for producing three-dimensional objects with improved properties

An apparatus and a process for manufacturing a three-dimensional object by successive layer-by-layer consolidation of selected zones of a powder stratum, the consolidated zones corresponding to successive sections of the three-dimensional object, each layer being divided into a central internal portion and an external border, said process comprising the following steps in order:

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Clermont-Ferrand, France

Christophe Bessac