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公开(公告)号：US20200340885A1
公开(公告)日：2020-10-29
申请号：US16772758
申请日：2018-12-19
Applicant: PIRELLI TYRE S.P.A.
Inventor： Alessandro HELD , Christian DE COL , Albert BERENGUER , Vincenzo BOFFA , Cristian DI FELICE
Abstract: A station for checking tyres includes a support structure defining an operating space for receiving a tyre and an overturning device with grip elements for engaging a radially outer portion of the tyre. A checking device includes a mechanical arm and at least one sensor associated with the mechanical arm. The overturning device overturns the tyre around an overturning axis perpendicular to a rotation axis of the tyre when the tyre is in the operating space. The mechanical arm is operatively active within the operating space and carries the sensor at least partially within the tyre for executing checks on an inner surface of the tyre housed in the operating space.
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公开(公告)号：US20180266810A1
公开(公告)日：2018-09-20
申请号：US15535303
申请日：2015-12-15
Applicant: PIRELLI TYRE S.P.A.
Inventor： Vincenzo BOFFA , Alessandro HELD , Valeriano BALLARDINI , Giuseppe CASADIO TOZZI
IPC: G01B11/24 , G01B11/30 , G01M17/02 , G01N21/88 , G01N21/954
Abstract: An apparatus for checking tyres described as a linear camera having an objective line lying on an optical plane; a first, a second and a third light source for emitting respectively a first, a second and a third light radiation; a command and control unit for selectively activating at least one from among the first, second and third light source and activating the linear camera in order to acquire a two-dimensional image of a linear surface portion of the tyre synchronously with the activation of the first, second and third source. The first and second light source lie on opposite sides of the optical plane. Furthermore, the first, second and third light source include each one or more sub-sources each having a respective main extension direction parallel to the optical plane and the distance of the sub-sources of the third light source from the optical plane is less than the distance of the first and second light source from the optical plane.
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公开(公告)号：US20220334029A1
公开(公告)日：2022-10-20
申请号：US17811259
申请日：2022-07-07
Applicant: PIRELLI TYRE S.P.A.
Inventor： Alessandro HELD , Christian DE COL , Albert BERENGUER , Vincenzo BOFFA , Cristian DI FELICE
Abstract: A method for checking tyres, includes: arranging a tyre in a station for checking tyres; moving a sensor within the tyre; performing first checks on an inner surface of the tyre with the at least one sensor; engaging a radially outer portion of the tyre with grip elements of an overturning device; extracting the sensor from the tyre and spacing the sensor from the tyre; overturning the tyre by 180° by rotation of the grip elements; moving again the sensor within the tyre; performing second checks on the inner surface of the tyre with the sensor; extracting again the sensor from the tyre and spacing the sensor from the tyre; and transporting the tyre outside the station for checking tyres.
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公开(公告)号：US20200217756A1
公开(公告)日：2020-07-09
申请号：US16796789
申请日：2020-02-20
Applicant: PIRELLI TYRE S.P.A.
Inventor： Alessandro HELD , Vincenzo BOFFA , Daniele PECORARO , Valeriano BALLARDINI , Josef ENGELSBERGER , Bernd LEITNER
Abstract: Apparatus for checking a tyre having: a support plane; a deformation element to generate a deformed surface portion; a positioning actuator to move the deformation element; and a device with a camera, a first light source, a second light source, a processing unit and a drive and control unit. The processing unit is programmed to activate the positioning actuator to move the deformation element towards the tyre to generate a deformed surface portion. The drive and control unit is programmed to: actuate the first light source to illuminate the deformed surface portion of the tyre, the second light source being inactive during the deformation; control the camera to acquire a first image of the deformed surface portion; actuate the second light source to illuminate an undeformed surface portion of the tyre; and control the camera to acquire a second image of the undeformed surface portion.
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公开(公告)号：US20200072704A1
公开(公告)日：2020-03-05
申请号：US16614024
申请日：2018-06-04
Applicant: PIRELLI TYRE S.P.A.
Inventor： Marco CANTU' , Fabio REGOLI , Vincenzo BOFFA , Luca TERSI
IPC: G01M17/02
Abstract: A method for checking tyres. A shift is determined along an acquisition direction between an acquisition point on a surface of a tyre to be checked and a position occupied by the acquisition point following a rotation of the tyre about its rotation axis. A linear laser beam is projected on a linear portion of surface of the tyre, and propagates in a direction parallel to the acquisition direction. A matrix image of a matrix portion of surface of the tyre containing the linear portion of surface is acquired; the image containing a laser line reflected by the linear portion of surface. A sub-portion of the matrix image is determined as a function of the determined shift, containing the reflected laser line. The sub-portion of the matrix image is then processed to determine an elevation profile of the linear portion of surface.
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Patent Agency Ranking
公开(公告)号：US20190318466A1
公开(公告)日：2019-10-17
申请号：US16396018
申请日：2019-04-26
Applicant: PIRELLI TYRE S.p.A.
Inventor： Alessandro GHIDOTTI PIOVAN , Valeriano BALLARDINI , Vincenzo BOFFA , Fabio REGOLI , Luigi DI STEFANO
Abstract: Method and related apparatus for detecting defects on a surface of a tyre, comprising: providing the tyre (200); acquiring a digital image comprising a structure comprising sections representative of linear elements of a pattern in a surface portion and representative of possible elongated defects, said sections of the structure having a respective orientation; providing a model of the pattern in the surface portion, wherein each pixel is associated with a first index representative of whether the pixel belongs or not to a pattern section and a second index representative of an at least local orientation of the pattern section passing through said pixel; calculating for each pixel of the structure a third index representative of the orientation of the structure section passing through said pixel; and establishing, for each pixel of the structure having a corresponding pixel in the pattern model belonging to the pattern, whether said pixel of the structure belongs to a proposed defect on the basis of the comparison between the third index and the second index associated with the corresponding pixel in the pattern model.
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公开(公告)号：US20190145906A1
公开(公告)日：2019-05-16
申请号：US16086247
申请日：2017-03-30
Applicant: Pirelli Tyre S.p.A.
Inventor： Vincenzo BOFFA , Alessandro HELD , Fabio REGOLI , Valeriano BALLARDINI , Giuseppe CASADIO TOZZI
IPC: G01N21/954 , G01M17/02 , G06T7/521 , H04N5/225
Abstract: Apparatus (1) for checking tyres, comprising: a support frame (2); a flange (3); and an acquisition system (4) of three-dimensional images of a surface of a tyre, the acquisition system being mounted on the support frame and comprising: a matrix camera (5), a linear laser source (7), and a reflecting surface (12) which intersects the propagation axis (9) of the linear laser beam and the optical axis (6) of the matrix camera (5), wherein a first angle (50) formed between a first section (14) and a second section (31) of the optical axis (6) mutually symmetrical with respect to a normal to the reflecting surface in the respective point of incidence to the reflecting surface, is obtuse, and wherein a second angle (51) formed between a first section (16) and a second section (32) of the propagation axis (9) mutually symmetrical with respect to a normal to the reflecting surface in the respective point of incidence to the reflecting surface, is obtuse.
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公开(公告)号：US20190017902A1
公开(公告)日：2019-01-17
申请号：US16066264
申请日：2016-12-28
Applicant: PIRELLI TYRE S.P.A.
Inventor： Alessandro HELD , Vincenzo BOFFA , Daniele PECORARO , Valeriano BALLARDINI
Abstract: A device for checking a tyre in a tyre production line. The device includes a detection system, an illumination arrangement and a reflective element. The detection system includes a camera having a target line lying on an optical plane passing through the camera. The illumination arrangement includes first, second and third light sources, the second and third light sources being arranged at opposite sides with respect to the optical plane and symmetrically with respect to the first light source. The reflective element defines a reflective plane arranged perpendicular to the optical plane and arranged between the second and the third light source.
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公开(公告)号：US20180372590A1
公开(公告)日：2018-12-27
申请号：US16064448
申请日：2016-12-28
Applicant: PIRELLI TYRE S.P.A.
Inventor： Alessandro HELD , Vincenzo BOFFA
Abstract: An apparatus for checking a tyre, having a support, a deformation system, a lighting arrangement, a moving member and a processing unit. The deformation system is configured to form an elastically deformed portion of inner surface and an elastically deformed portion of outer surface on the tyre. The lighting arrangement includes light sources and cameras to illuminate and detect deformed inner and outer surface portions of the tyre, and generate corresponding control signals. The moving member sets the support in relative rotation with respect to the light sources and the deformation system around a rotation axis of the tyre. The processing unit is configured so that while the light sources illuminate the deformed portions of outer and inner surfaces, the deformation system acts and the moving member imparts the relative rotation.
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公开(公告)号：US20190145862A1
公开(公告)日：2019-05-16
申请号：US16300464
申请日：2017-05-17
Applicant: PIRELLI TYRE S.P.A.
Inventor： Vincenzo BOFFA , Marco CANTÙ , Fabio REGOLI , Valeriano BALLARDINI
IPC: G01M17/02 , G01N21/954 , G01N21/952 , G06T7/00 , H04N5/247 , H04N5/225 , G06T7/60
Abstract: A checking method and line for checking a tyre for vehicle wheels. The tyre is associated with a model associated with a setting for image acquisition devices. Once the model is obtained, preliminary images of the tyre are acquired, from which at least one adjustment value representative of at least one geometric characteristic of the tyre is obtained. A deviation between the at least one adjustment value and a respective reference value associated with the model is then calculated. The setting associated with the model of tyre is then adjusted based on the calculated deviation and the tyre is then inspected to look for possible production defects by acquiring images of at least part of the surface of the tyre using the image acquisition devices, set according to the adjusted setting.
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