Patent ID: 11897218
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. A cleaning device for a vulcanization mold, comprising:
a laser oscillator; and
a laser head configured to irradiate a cleaning target portion of the vulcanization mold for a tire with a laser beam supplied from the laser oscillator,
the cleaning device comprising a gas supply unit configured to bring an irradiation range of the cleaning target portion irradiated with the laser beam into an atmosphere of inert gas, thereby preventing forming of ultrafine protrusions having a height of nm level on a surface of the cleaning target portion cleaned by being irradiated with the laser beam,
wherein an output of a light source of the laser beam is 1 W or greater and 5 kW or less, a pulse width of the laser beam is 11 ns or greater and 500 ns or less, a pulse energy of the laser beam is 1 mJ or greater and 0.1 J or less, a pulse frequency of the laser beam is 3.1 kHz or greater and 100 kHz or less, a beam diameter of the laser beam is from 0.1 mm to 3 mm, and a fluence of the laser beam is 0.5 J/m2 or greater and 4.0 J/m2 or less.