Conicity correction for rubber component extrusion
AssigneeThe Goodyear Tire & Rubber Company
InventorWarren Paul Ripple
Life of this patent
Estimating the term…
Abstract
A method for correcting the conicity of a tread strip is described. The method includes the steps of extruding a tread profile having a right hand side, a left hand side and a chimney; measuring the thickness of the tread profile at the right hand side and the left hand side; calculating the mass of the tread on the left hand side and the right hand side; and adjusting the location of the chimney incrementally towards the side which is least in mass.
Claims6
A method for correcting the conicity of a tread strip, the method comprising the steps of:
- extruding a tread profile having a right hand side, a left hand side and a chimney;
- measuring the thickness of the tread profile at the right hand side and the left hand side;
- calculating the mass of the tread on the left hand side and the right hand side;
- adjusting the location of the chimney incrementally towards the side which is least in mass.
A system for correcting the conicity of a tread strip, the system comprising:
- a first extruder for extruding a tread profile through a profile die, wherein said tread profile has a right hand side and a left hand side;
- a left profile die for extruding a chimney on a left hand side of the tread profile;
- a right profile die for extruding a chimney on a right hand side of the tread profile;
- a chimney extruder in fluid communication with the left or right profile die;
- means for calculating the mass of the left hand side of the tread and the right hand side of the tread;
- means for comparing the left hand side calculated mass with a predetermined left hand side mass and extruding the tread through the right profile die if the left hand side of the tread mass exceeds it specification, means for comparing the right hand side calculated mass with the predetermined right hand side mass and extruding the tread through the right profile die if the right hand side of the tread mass exceeds the predetermined right hand side amount.
A method for correcting the conicity of a tread strip, the method comprising the steps of:
- extruding a tread profile having a right hand side, a left hand side, a cap, a base and a chimney;
- measuring the thickness of the tread profile at two or more locations;
- calculating the mass of the tread on the left hand side and the right hand side;
- determining if the left hand side mass is less than the predetermined left hand side specification and then moving the chimney to the right hand side;
- determining if the right hand side mass is less than the predetermined right hand side specification and moving the chimney to the left hand side.
Dependencies are inferred from the claim text.