"Using laser profilometry in less then 1 minute we read everything on the tire."

 
 
In tire production a critical phase is the lettering procedure. During this inspection step it is checked whenever all the writings and symbols imprinted on the tire are correct and well placed. For those international normative that require the presence of defined symbols and writings on the surface of the tire and for the customer perceived quality of the tire itself, the lettering control is a crucial procedure in the tire production process.

VISION TIRE SYSTEM 3D - LETTERING

Vision Tire System 3D - Lettering can read and verify automatically every kind of writing and symbols on the outside of a not inflated tire with an high efficiency and high repetibility process, replacing the manual inspection that is an high focus and high risk procedure.

Lettering on tire
 
 

VISION TIRE SYSTEM 3D - LETTERING

Uses the Laser Profilometry, a technique based on the triangulation between a laser line and an area scan camera, that let the system have a three-dimensional reconstruction of the tire surface with one of the
highest reachable resolution in a very short cycle time.

Lettering process
 
 

VISION TIRE SYSTEM 3D - LETTERING

Taking into account the plant sheet specification of the tire in test, consisting of a list of all the writings and symbols that have to be imprinted on the tire, verifies if all the elements on the list are correctly imprinted
and placed on the tire surface. Additional controls can be operated, as the analysis of the deterioration of the mold, where the stamp height of the characters on the tire in test is compared to the expected one. A limit tolerance can be set to raise an alert when the mold is getting dirty, deteriorated or damaged.

 

SYMBOLS

Lettering process - Symbols

SMALL LETTERS

Lettering process - Small letters

TIRE REGULATION

Lettering process - Tire Regulation Reading

MISSING STAMP

Lettering process - Missing Stamp Detection

MISPLCEMENT

Misplacement Detection

DIRTY STAMP

Dirty Stamp Detection