Abstract: A device (100) for forming a complex product of a profiled product produces a complex product from non-protruding rubber layers. There is also a process for forming a complex product of a profiled product from non-protruding rubber layers, performed by the disclosed device (100). A tire production line can include at least one installation (500) having the device (100).

Abstract: A device for handling a rubber-containing product web (20) intended for the manufacture of a tire, of the type comprising: an endless belt (24) for conveying the web (20), which belt is guided and driven by a set of rollers (R1 to R8) rotatably mounted about axes parallel to a direction (Y), termed the transverse direction, at least some of these rollers (R1 to R8) separating a carrier strand (24P) of the belt, which is intended to carry the web (20), from a return strand (24R) of the belt, a reel (28) for winding the web (20), which reel is arranged above the carrier strand (24P) and rotatably mounted about an axis substantially parallel to the transverse direction; and (Y), means (46) for temporarily diverting the path of the carrier strand (24P) between a normal path of the carrier strand (24P), substantially tangential to the reel (28), and a temporary path for winding the carrier strand (24P) around a sector of the reel (28) that is more than 90°.

Abstract: Device for measuring the rheological properties of a viscoelastic material, formed of an upper rotating plate (10) and of a lower rotating plate (20) which are able to press against the opposite faces of a sample S of the material to be measured. The axes of rotation (a1 a1? and a2 a2?) of said plates are arranged parallel to one another in a direction perpendicular to the plane formed by the plates, and offset from one another by a distance d. Two independent motors (12, 22) drive respectively the upper plate (10) and the lower plate (20) at the same speed of rotation ?, without giving rise to any angular displacement between the two plates.

Abstract: A gear pump, in particular for pumping material such as rubber mixes, includes an enclosure in which a central gear wheel and two peripheral gear wheels rotate. Teeth of the central gear wheel mesh with teeth of both peripheral gear wheels to pump material from an inlet to an outlet. The pump includes at least one feed chamber in which a feed mechanism delivers material to the inlet. The gear wheels are separately driven by a driving torque. A prestressing device applies a torsional prestress which presses the meshing teeth together for creating a seal between those meshing teeth to prevent leakage of material past the teeth.

Abstract: Device for measuring the rheological properties of a viscoelastic material, formed of an upper rotating plate (10) and of a lower rotating plate (20) which are able to press against the opposite faces of a sample S of the material to be measured. The axes of rotation (a1a1? and a2 a2?) of said plates are arranged parallel to one another in a direction perpendicular to the plane formed by the plates, and offset from one another by a distance d. Two independent motors (12, 22) drive respectively the upper plate (10) and the lower plate (20) at the same speed of rotation ?, without giving rise to any angular displacement between the two plates.

Abstract: The invention relates to a gear pump in particular for rubber mixes, comprising an enclosure in which rotates a set of gear wheels comprising a central gear wheel which cooperates with two other peripheral gear wheels, said pump comprising at least one feed chamber in which acts at least one feed means for delivering the material to said enclosure via at least one passage orifice, each of the gear wheels being driven directly by a driving torque and prestressing means between the teeth ensuring hermetic contact of the meshing zone of the central wheel with each of the two peripheral wheels.

Abstract: The invention relates to a volumetric pump, in particular for rubber mixes, comprising feeding means for delivering the material to an enclosure which opens into an outlet orifice and in which rotate two contra-rotating screws which mesh with one another by means of the respective helicoidal threads which they bear, the axial length of the meshing zone of these screws being greater than or equal to the total of the helix pitch of the threads and of the helix pitch multiplied by the number of threads of each screw multiplied by two.