Method for detaching elastomer particles

Patent metadata

Field	Value
Publication number	US-12103257-B2
Application number	US-202017784263-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Dec 11, 2019
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

A method for detaching elastomer particles that adhere on microvalves (3) disposed on the internal surface of a vehicle tire mold (2) comprises vibrating the microvalve (3) at a constant amplitude ranging between approximately 0.05 and 0.2 mm and at a frequency ranging between 20,000 and 30,000 Hz during the detachment of the particles from the microvalve (3).

First claim

The invention claimed is:

1. A method for detaching elastomer particles which adhere to microvalves disposed on an inner surface of a vehicle tire curing mold, the method comprising:
detecting a presence of a microvalve disposed on the inner surface of the vehicle tire curing mold;
contacting a surface of the microvalve with an ultrasonic pen; and
vibrating the microvalve with a constant amplitude of between approximately 0.05 and 0.2 mm and a frequency of between 20,000 and 30,000 Hz during detachment of the elastomer particles from the microvalve.

2. The method according to claim 1 , further comprising, after final detachment of the elastomer particles, detecting an abrupt change of frequency of the vibrations to stop the vibrations.

3. The method according to claim 2 , wherein the abrupt change of frequency is an increase up to approximately 6000 Hz.

Assignees

• Michelin & Cie

Inventors

• Dettorre Jean-Marie
• Drago Frederic
• Druet Michel
• Piq Cyril
• Silva Lionel

Classifications

• B29D2030/0663

  Mould maintenance, e.g. cleaning, washing, repairing · CPC title

• B08B2209/005

  Use of ultrasonics or cavitation, e.g. as primary or secondary action · CPC title

• B08B9/00

  Cleaning hollow articles by methods or apparatus specially adapted thereto · CPC title

• B29D30/0662 Primary

  Accessories, details or auxiliary operations · CPC title