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公开(公告)号：US10259180B2
公开(公告)日：2019-04-16
申请号：US15046687
申请日：2016-02-18
Applicant: Pirelli Tyre S.p.A.
Inventor： Maurizio Marchini , Pierangelo Misani , Gianlorenzo Ferrari
Abstract: A process for manufacturing a tire by the steps of producing and assembling the tire structural elements on a toroidal support to form a green tire, and the step of precuring at least an inner surface of the green tire by heating the toroidal support. The radially inner surface of the toroidal support is provided with a plurality of protruding elements to reduce the time required for the outer surface of the toroidal support to reach a temperature which is suitable for ensuring a uniform and homogeneous precuring of the inner surface of the green tire, preferably of the inner surface and the bead regions of the green tire.
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公开(公告)号：US20170225421A1
公开(公告)日：2017-08-10
申请号：US15437764
申请日：2017-02-21
Applicant: PIRELLI TYRE S.p.A.
Inventor： Gianni Mancini , Maurizio Marchini , Gaetano Lo Presti
Abstract: An apparatus for manufacturing tyres for vehicle wheels wherein each tyre includes a carcass structure formed starting from at least one carcass ply laid on a forming support extended along a longitudinal axis. The apparatus includes at least one device for positioning at least one annular anchoring structure on at least one end edge of the carcass ply, the positioning device being circumferentially extended around the longitudinal axis of the forming support and axially movable with respect to the forming support between an operating position distal from the forming support and at least one operating position close to the forming support. The apparatus further includes a device for turning up the end edge of the carcass ply around the annular anchoring structure, the turning up device being circumferentially extended about the longitudinal axis of the forming support and axially movable for approaching/moving away to/from the forming support. The positioning device and the turning up device are radially expandable/contractible in a synchronous manner with respect to the longitudinal axis of the forming support and are settable in a plurality of different operating radial positions, each operating radial position being selected based on a respective radial dimension of the tyre to be manufactured.
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公开(公告)号：US11712861B2
公开(公告)日：2023-08-01
申请号：US16299710
申请日：2019-03-12
Applicant: PIRELLI TYRE S.P.A.
Inventor： Maurizio Marchini , Stefano Balia , Stefano Boracco
CPC classification number: B29D30/00 , B29D30/005 , B29D30/0016 , B29D30/08 , B29D30/32 , B29D2030/0022 , B29D2030/0038 , B29D2030/0044 , B29D2030/0066 , B29D2030/3207 , B29D2030/487
Abstract: A method for verifying the correct formation of the beads in a process and a plant for building tyres for vehicle wheels, includes: loading a plurality of annular anchoring structures in a storage, disposing them in two groups separated by an opening; positioning a building drum provided with a carcass sleeve in a tyre bead-forming machine; picking up two of the annular anchoring structures from the storage and loading them on the tyre bead-forming machine. In a work area of the tyre bead-forming machine, on each of two axially opposite zones of the carcass sleeve, a respective annular anchoring structure is fit and each of the abovementioned zones is turned up around the respective annular anchoring structure to form the beads. The aforesaid opening allows an operator to conduct a visual inspection of the work area and/or access the work area during the entire work cycle of the machine.
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公开(公告)号：US11312095B2
公开(公告)日：2022-04-26
申请号：US16405076
申请日：2019-05-07
Applicant: Pirelli Tyre S.p.A.
Inventor： Maurizio Marchini , Gianni Mancini , Gaetano Lo Presti
Abstract: A process for manufacturing tyres for vehicle wheels, comprising the step of building on a forming support a carcass structure comprising at least one carcass ply and, at least one end edge of the carcass ply, at least one annular anchoring structure comprising at least one substantially circumferential annular insert and at least one filling insert associated to said at least one substantially circumferential annular insert. The step of building the carcass structure comprises the steps of positioning the annular anchoring structure on the carcass ply by moving the annular substantially circumferential insert into contact with an end edge of the carcass ply by means of a special positioning member, pulling down the filling insert on the end edge of the carcass ply and turning up a free end portion of the end edge of the carcass ply so as to form a turned up end portion of the carcass ply including said annular anchoring structure. The pulling down of the filling insert on the end edge of the carcass ply is carried out by a special pulling down member while the substantially circumferential annular insert is retained into a contact position with the end edge of the carcass ply by said positioning member.
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公开(公告)号：US11084238B2
公开(公告)日：2021-08-10
申请号：US16190267
申请日：2018-11-14
Applicant: PIRELLI TYRE S.P.A.
Inventor： Marco Fabbretti , Andrea Crepaldi , Cesare Emanuele Amurri , Maurizio Marchini
IPC: B29D30/16 , B29D30/30 , B29D30/60 , B29C48/00 , B29C48/355 , B29C48/07 , B29C48/92 , B29C43/48 , B29L30/00
Abstract: A method for controlling the thickness of a continuous elongated element made of elastomeric material, applied according to coils wound on a forming support, includes: advancing a head end of the continuous elongated element toward the forming support; subjecting, during the advancement, the continuous elongated element to a first stretching with a first stretch coefficient before applying on the forming support; and subjecting, during the advancement, the continuous elongated element to a second stretching with a second stretch coefficient during the application on the forming support. During the first stretching, a span of the continuous elongated element adjacent to the head end is stretched with a supplementary stretch coefficient greater than the first stretch coefficient, in a manner so as to confer, also to the span adjacent to the head end, a stretch and a section similar or substantially equivalent to those of the rest of the continuous elongated element.
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Patent Agency Ranking
公开(公告)号：US10926501B2
公开(公告)日：2021-02-23
申请号：US15535285
申请日：2015-11-26
Applicant: PIRELLI TYRE S.P.A.
Inventor： Maurizio Marchini , Cesare Emanuele Amurri , Marco Fabbretti , Andrea Crepaldi
Abstract: A reinforcement annular structure of a tyre being processed is formed by arranging a forming drum externally carrying a deposition surface; arranging an application member supported in thrust relation toward the deposition surface; longitudinally guiding a continuous elongated element toward a point of application between the deposition surface and a work surface presented by the application member; and winding the continuous elongated element circumferentially around the deposition surface in order to form coils that are axially side-by-side each other. During winding, the work surface of the application member operates in abutment relation against at least one of the cons previously formed by the continuous elongated element.
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公开(公告)号：US10899095B2
公开(公告)日：2021-01-26
申请号：US15288457
申请日：2016-10-07
Applicant: Pirelli Tyre S.P.A.
Inventor： Maurizio Marchini , Michele Ballabio , Stefano Boracco
Abstract: A process and an apparatus for building tyres for vehicle wheels includes assembling at least one tyre component through laying of strip-like elements disposed circumferentially close to each other on a deposition surface radially external to the forming drum, wherein laying of each strip-like element includes: radially moving the strip-like element close to the deposition surface; locking a central portion of the strip-like element against the deposition surface; and pulling the strip-like element in opposite directions starting from the central portion toward the opposite ends thereof, while the central portion is maintained in a locked condition against the deposition surface, so as to progressively lay down the strip-like element against the deposition surface.
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公开(公告)号：US10688744B2
公开(公告)日：2020-06-23
申请号：US14795619
申请日：2015-07-09
Applicant: Pirelli Tyre S.p.A.
Inventor： Maurizio Marchini , Gianni Mancini
Abstract: A plant for building tyres includes a plurality of working locations, at least one first working location being associated with at least two loading/unloading locations, a proximal one and a distal one, each of said working locations and loading/unloading locations being associable with a forming drum. The production cycle is controlled by the method of: (i) loading a first forming drum into the at least one first working location; (ii) loading a second forming drum into the loading/unloading location; (iii) at the end of the working provided in the at least one first working location, unloading the first forming drum into the proximal loading/unloading location.
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公开(公告)号：US10661518B2
公开(公告)日：2020-05-26
申请号：US15549894
申请日：2016-02-29
Applicant: PIRELLI TYRE S.P.A.
Inventor： Maurizio Marchini , Christian De Col
Abstract: A forming drum has circumferentially consecutive sectors that are radially movable between a contracted condition and an expanded condition in which the sectors are radially moved away from a geometric axis in order to define a radially external abutment surface. Each sector has circumferentially opposite coupling portions, each having circumferential projections alternated with circumferential cavities. The projections of each sector are slidably engaged in the respective cavities of circumferentially adjacent sectors. From at least one of the projections, at least one support wing is extended having a first side and a second side that are respectively opposite. The first side coincides with a portion of the abutment surface and the second side at least partially overlaps one of the projections belonging to an adjacent sector. A process for building tyres employing the drum is also described.
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公开(公告)号：US10458883B2
公开(公告)日：2019-10-29
申请号：US15568709
申请日：2016-04-18
Applicant: PIRELLI TYRE S.p.A.
Inventor： Vincenzo Boffa , Maurizio Marchini , Alessandro Held , Riccardo Antoj
IPC: G01M17/02
Abstract: An apparatus and a process for controlling tires wherein the apparatus includes at least one control station which includes: a base; a rotating table mounted on the base so as to be able to rotate around a respective vertical rotation axis; at least one control device operatively active at the rotating table; and a movement device configured for rotating the rotating table around the vertical rotation axis. The rotating table has a substantially horizontal abutment portion configured for receiving and supporting a sidewall of a tire to be controlled. The abutment portion is movable in the horizontal plane according to two directions with respect to the vertical rotation axis by means of an actuator. A detection device is configured for detecting a shift between the vertical rotation axis and the main axis of the tire. An electronic management unit operatively connected to the detection device and to the actuator is configured for driving the actuator and moving the abutment portion according to the two directions as a function of the detected shift in order to render such shift less than a pre-established value, so as to center the tire with respect to the vertical rotation axis before executing the controls.
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