公开(公告)号：WO2017103872A1

公开(公告)日：2017-06-22

申请号：PCT/IB2016/057711

申请日：2016-12-16

Applicant: PIRELLI TYRE S.P.A.

Inventor： HELD, Alessandro ,  BOFFA, Vincenzo ,  PECORARO, Daniele ,  BALLARDINI, Valeriano ,  ENGELSBERGER, Josef ,  LEITNER, Bernd

IPC: G01M17/02

CPC classification number: G01M17/027

Abstract: The present invention relates to a device (10) for checking a tyre (200), the device (10) comprising: a detection system (104) comprising a camera (105) having an optical plane (107) passing through the camera (105) and defining a focal plane (121); a first light source (110), a second light source (108) and a third light source (109) adapted for emitting a first light radiation, a second light radiation and a third light radiation, respectively to illuminate a surface portion of said tyre at or close to said focal plane (121), said second light source (108) and said third light source (109) being arranged at opposite sides with respect to said optical plane (107); where said first light source (110) is fixed with respect to said detection system (104) and said second light source (108) and third light source (109) are adapted to be movable from a first inactive configuration where they are controlled to not emit said second light radiation and third light radiation and wherein the distance (d2, d3) of said second light source (108) and of said third light source (109) from said focal plane (121) is greater than the distance (dl) of said first light source (110) from said focal plane (121) to an active configuration wherein they are adapted for emitting at least one among said second light radiation and said third light radiation and wherein the distance (d2, d3) of said second source (108) and of said third source (109) from said focal plane (121) is equal to or less than the distance (dl) of said first source (110) from said focal plane (121); and a drive and control unit (140) adapted for activating said detection system (104) to acquire a first image and at least a second image of a first surface portion and a second surface portion of said tyre (200) in said inactive configuration and in said active configuration, respectively.

Abstract translation: 本发明涉及一种用于检查轮胎（200）的装置（10），所述装置（10）包括：检测系统（104），其包括具有光学平面的照相机（105） 107）穿过照相机（105）并限定焦平面（121）; 第一光源（110），第二光源（108）和第三光源（109），所述第一光源适于分别发射第一光辐射，第二光辐射和第三光辐射以照射所述轮胎的表面部分 在所述焦平面（121）处或附近，所述第二光源（108）和所述第三光源（109）相对于所述光学平面（107）布置在相对侧; 其中所述第一光源（110）相对于所述检测系统（104）是固定的，并且所述第二光源（108）和第三光源（109）适于从它们被控制到不控制的第一不活动配置 发射所述第二光辐射和第三光辐射，并且其中所述第二光源（108）和所述第三光源（109）距所述焦平面（121）的距离（d2，d3）大于所述距离（d1） 将所述第一光源（110）从所述焦平面（121）移动到主动配置，其中它们适于发射所述第二光辐射和所述第三光辐射中的至少一个，并且其中所述第二光源（110）的距离（d2，d3） 所述第一光源（108）和来自所述焦平面（121）的所述第三光源（109）的距离等于或小于所述第一光源（110）距所述焦平面（121）的距离（d1）。 以及驱动和控制单元（140），其适于启动所述检测系统（104）以获取所述轮胎（200）的第一表面部分和第二表面部分的处于所述不活动构造的第一图像和至少第二图像，以及 在所述活动配置中。

公开(公告)号：WO2017103873A1

公开(公告)日：2017-06-22

申请号：PCT/IB2016/057712

申请日：2016-12-16

Applicant: PIRELLI TYRE S.P.A.

Inventor： HELD, Alessandro ,  BOFFA, Vincenzo ,  PECORARO, Daniele ,  BALLARDINI, Valeriano ,  ENGELSBERGER, Josef ,  LEITNER, Bernd

IPC: G01M17/02

CPC classification number: G01M17/027

Abstract: The invention relates to a method for checking a tyre, comprising: - Providing a tyre (200) to be checked; - associating a first light source (110) and a second light source (108) able to be activated independently with a camera (105); - applying a first force against a first surface portion (202) of said tyre so as to generate a first deformed surface portion; - illuminating said first deformed surface portion of said tyre with a first light radiation emitted by said first light source (110); - keeping said second light source (108) inactive during said deformation; - acquiring a first image of said first deformed surface portion illuminated by said first light radiation through said camera (105); - removing said first force from said first surface portion of said tyre; - selecting a second surface portion at least partially distinct from said first surface portion of said tyre; - - illuminating said second undeformed surface portion of said tyre with a second light radiation emitted by said second light source (108); - acquiring a second image of said second undeformed surface portion and illuminated by said second light radiation through said camera (105); and - processing said first image and said second image, so as to detect possible defects in said first surface portion and in said second surface portion of said tyre. The invention also relates to an apparatus for checking tyres.

Abstract translation: 本发明涉及一种用于检查轮胎的方法，包括： - 提供待检查的轮胎（200）;以及 - - 使用照相机（105）将能够独立激活的第一光源（110）和第二光源（108）相关联; - 对所述轮胎的第一表面部分（202）施加第一力以产生第一变形表面部分; - 用由所述第一光源（110）发射的第一光辐射照射所述轮胎的所述第一变形表面部分; - 在所述变形期间保持所述第二光源（108）不活动; - 通过所述相机（105）获取由所述第一光辐射照射的所述第一变形表面部分的第一图像; - 从所述轮胎的所述第一表面部分去除所述第一力; - 选择至少部分不同于所述轮胎的所述第一表面部分的第二表面部分; - 用由所述第二光源（108）发射的第二光辐射照射所述轮胎的所述第二未变形表面部分; - 通过所述照相机（105）获取所述第二未变形表面部分的第二图像并且被所述第二光辐射照亮; 以及 - 处理所述第一图像和所述第二图像，以便检测所述轮胎的所述第一表面部分和所述第二表面部分中的可能缺陷。 本发明还涉及一种用于检查轮胎的设备。

公开(公告)号：WO2017208093A1

公开(公告)日：2017-12-07

申请号：PCT/IB2017/052680

申请日：2017-05-09

Applicant: PIRELLI TYRE S.P.A.

Inventor： BOFFA, Vincenzo ,  HELD, Alessandro ,  PECORARO, Daniele ,  LEITNER, Bernd ,  HEINRICH, Jürgen

IPC: G01N21/952 ,  B29D30/00 ,  G01M17/02 ,  G01N21/954

CPC classification number: G01N21/952 ,  B29D30/0061 ,  B29D2030/0066 ,  G01M17/027 ,  G01N21/954

Abstract: A method for checking tyres, comprising at least two acquisitions of images of a surface of a tyre in a station (1; 2; 3) comprising a first apparatus (4) and a second apparatus (5), both mounted on a respective movement member (6) comprising a respective movable arm (8) and a respective fixed base (7) that is mounted onto an upper portion (30) of a supporting structure (9), wherein an aspect ratio of the footprint area of the supporting structure is less than 0.85, wherein the bases (7) are arranged in such a manner that their vertical projections lie at opposite sides of a line parallel to the direction of movement (X) and intersecting the maximum width (W); wherein in each acquisition, the first apparatus (4) and the second apparatus (5) acquire the respective image substantially in a simultaneous manner, wherein in an acquisition, the first apparatus (4) acquires a respective image of a respective circumferential portion of the external surface and the second apparatus (5) acquires a respective image of a respective circumferential portion of the internal surface, and wherein in none of the acquisitions do the first and the second apparatus both acquire the internal surface.

Abstract translation: 一种用于检查轮胎的方法，包括在包括第一装置（4）和第二装置（5）的站（1; 2; 3）中轮胎的表面的图像的至少两次获取， ），两者安装在包括相应的可动臂（8）和安装到支撑结构（9）的上部（30）上的相应的固定基座（7）的相应的运动构件（6）上，其中纵横比 支撑结构的占地面积小于0.85，其中底座（7）以这样的方式布置，即它们的垂直凸起位于平行于运动方向（X）的直线的相对侧，并与最大宽度 （W）; 其中在每个获取中，所述第一装置（4）和所述第二装置（5）基本上以同时方式获取所述相应图像，其中在获取中，所述第一装置（4）获取所述第一装置 外表面和第二装置（5）获得内表面的相应圆周部分的相应图像，并且其中在所有采集中，第一和第二装置都不获取内表面。

公开(公告)号：WO2017115290A1

公开(公告)日：2017-07-06

申请号：PCT/IB2016/058038

申请日：2016-12-28

Applicant: PIRELLI TYRE S.P.A.

Inventor： HELD, Alessandro ,  BOFFA, Vincenzo ,  PECORARO, Daniele ,  BALLARDINI, Valeriano

IPC: G01M17/02 ,  G01B11/30

CPC classification number: G01M17/027 ,  G01B11/24

Abstract: The invention relates to a device (10) for checking a tyre in a tyre production line comprising: o a detection system (104) comprising a camera (105) having a target line (106) lying on an optical plane (107) passing through said camera (105); o a first light source (110), a second light source (108) and a third light source (109), said second light source (108) and said third light source (109) being arranged at opposite sides with respect to said optical plane (107) and symmetrically with respect to said first light source (110); o where said first light source (110) is adapted for emitting a first diffused light radiation on said surface portion, and said second light source (108) and third light source (109) are adapted for emitting a second grazing light radiation and a third grazing light radiation on a surface portion of said tyre (200) coinciding with or close to said target line (106); and o a reflective element (150) defining a reflective plane arranged perpendicular to said optical plane (107), said reflective element (150) being arranged between said second light source (108) and third light source (109), said reflective element (150) being adapted for reflecting said target line (106) by an angle comprised between about 60° and about 120° and wherein a minimum distance between said reflective plane and a focusing plane (121) of said camera (105) passing through said reflected target line is less than a minimum distance between one of said first light source (110), second light source (108) or third light source (109) and said focusing plane (121).

Abstract translation: 本发明涉及一种用于检查轮胎生产线中的轮胎的装置（10），其包括：检测系统（104），其包括具有位于轮胎生产线上的目标线（106）的照相机（105） 穿过所述照相机（105）的光学平面（107）; （110），第二光源（108）和第三光源（109），所述第二光源（108）和所述第三光源（109）相对于所述光学平面 （107）并且相对于所述第一光源（110）对称; o其中所述第一光源（110）适于在所述表面部分上发射第一漫射光辐射，并且所述第二光源（108）和第三光源（109）适于发射第二掠过光辐射，并且第三光源 在所述轮胎（200）的与所述目标线（106）重合或接近的所述轮胎（200）的表面部分上掠过光辐射; 和反射元件（150），其限定垂直于所述光学平面（107）布置的反射平面，所述反射元件（150）布置在所述第二光源（108）和第三光源（109）之间，所述反射元件（150 ）适于将所述目标线（106）反射一个包括在大约60°和大约60°之间的角度。 和约120°; 并且其中所述反射平面与穿过所述反射目标线的所述相机（105）的聚焦平面（121）之间的最小距离小于所述第一光源（110），第二光源（108） ）或第三光源（109）和所述聚焦平面（121）。