Method and station for the skiving of a tire casing during retreading
AssigneeBridgestone Europe NV/SA
InventorLuca Lelio
Life of this patent
Estimating the term…
Abstract
Method and station for the skiving of the equatorial surface of the casing of a pneumatic tire during a retreading process of the same pneumatic tire; the old worn tread is removed from the pneumatic tire in order to expose the equatorial surface of the casing of the pneumatic tire; the presence of any damage on the equatorial surface of the casing is identified by capturing a three-dimensional profile of the equatorial surface of the casing by means of a laser type profilometer and by analyzing the same three-dimensional profile; and the equatorial surface of the casing is skived where there is damage resulting from the formation of craters on the equatorial surface.
Claims10
Method for a skiving of an equatorial surface of a casing of a pneumatic tire during a retreading process of the same pneumatic tire, the method comprising the steps of:
- removing the old worn tread from the pneumatic tire in order to expose the equatorial surface of the casing of the pneumatic tire;
- electronically identifying the presence and location of any damage on the equatorial surface of the casing;
- and
- skiving the equatorial surface of the casing where there is damage resulting in the formation on the equatorial surface of craters by means of an electronically controlled automatic skiving device that is driven as a function of the location of the damage on the equatorial surface of the casing;
- the method is characterized in that:
- the step of electronically identifying the presence and location of damage on the equatorial surface of the casing before skiving of the equatorial surface of the casing comprises the additional steps of:
- capturing a single digital three-dimensional profile of the equatorial surface of the casing by means a profilometer;
- and
- determining the presence and location of damage on the equatorial surface of the casing by analyzing the digital three-dimensional profile of the equatorial surface captured by profilometer;
- and,
- the step of skiving the equatorial surface of the casing where there is damage comprises the additional steps of:
- carrying a tool of the automatic skiving device to the point of damage in order to hollow out the equatorial surface of the casing and therefore create a corresponding crater;
- capturing a first digital color image of the crater generated by skiving the damage by means of a digital color camera;
- and
- analyzing the first digital color image in search of the presence of any rust inside the crater.
A station for a skiving of a equatorial surface of a casing of a pneumatic tire during a retreading process of the same pneumatic tire;
- the station comprising:
- an electronic control unit for identifying a presence and location of any damage on the equatorial surface of the casing;
- and
- an electronically controlled automatic skiving device that comprises a tool and that is driven by the control unit as a function of the location of the damage on the equatorial surface of the casing for skiving the equatorial surface of the casing where there is damage resulting from the formation of craters on the equatorial surface;
- the station is characterized in that:
- a profilometer is provided for capturing a single digital three-dimensional profile of the equatorial surface of the casing before skiving of the equatorial surface of the casing;
- the control unit determines the presence and location of damage on the equatorial surface of the casing by analyzing the digital three-dimensional profile of the equatorial surface captured by the profilometer;
- the electronically controlled automatic skiving device carries the tool of the automatic skiving device to the point of damage in order to hollow out the equatorial surface of the casing and therefore create a corresponding crater;
- and
- the station captures a first digital color image of the crater generated by skiving the damage by means of a digital color camera and analyzes the first digital color image in search of the presence of any rust inside the crater.
Dependencies are inferred from the claim text.