Tire processing apparatus, tire repairing apparatus, repair sheet, tire repairing method, and tire manufacturing method

Patent metadata

Field	Value
Publication number	US-12391012-B2
Application number	US-202117925407-A
Country	US
Kind code	B2
Filing date	Feb 8, 2021
Priority date	Jun 3, 2020
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

A tire repairing apparatus includes: a tire support portion rotatably supporting a pneumatic tire; and an application mechanism configured to apply an additive that has a softening effect, to a tread portion of the pneumatic tire supported by the tire support portion, thereby causing the additive to permeate into the tread portion.

First claim

The invention claimed is:

1. A tire processing apparatus comprising:
a support supporting a tire; and
an applicator configured to soften a rubber component of a tread portion of the tire by applying a softening agent having a softening effect that softens the tread portion and causing the softening agent to permeate into the tread portion, wherein
the support supports the tire in such a manner that the tire can rotate in a circumferential direction of the tire,
the tire processing apparatus further comprises a motor that rotates the tire in the circumferential direction,
the applicator includes a contact member that applies the softening agent by coming in contact with a part of an outer peripheral surface of the tread portion when the tire is rotated in the circumferential direction by the motor, and
wherein the applicator includes a presser configured to press a contact surface of the contact member against the tread portion.

2. The tire processing apparatus according to claim 1 , further comprising a heater configured to heat the tread portion.

3. The tire processing apparatus according to claim 2 , wherein the heater is provided in a vicinity of the applicator.

4. The tire processing apparatus according to claim 3 , wherein in a case where the tire is rotated in a predetermined rotational direction, the heater is provided upstream of and adjacent to the applicator in the rotational direction.

5. The tire processing apparatus according to claim 1 , wherein the contact member is a roller member that is rotatably supported in a state of being in contact with the tread portion and is passively rotated by coming in contact with the tread portion of the tire that is rotated.

6. The tire processing apparatus according to claim 1 , wherein the presser is a biaser configured to bias the contact member toward the tread portion.

7. The tire processing apparatus according to claim 1 , wherein the presser is an elastic member that is provided at the contact member and is compressed by coming in contact with the tread portion.

8. The tire processing apparatus according to claim 1 , further comprising a storage that stores the softening agent, wherein the contact member is configured to convey the softening agent from the storage to the tread portion.

9. A tire repairing apparatus comprising:
an idle rotator configured to idle-rotate a tire mounted on a vehicle; and
an applicator configured to soften a rubber component of a tread portion of the tire by applying a softening agent having a softening effect that softens the tread portion to the tread portion of the tire rotated by the idle rotator and causing the softening agent to permeate into the tread portion, wherein
the support supports the tire in such a manner that the tire can rotate in a circumferential direction of the tire,
the tire processing apparatus further comprises a motor that rotates the tire in the circumferential direction,
the applicator includes a contact member that applies the softening agent by coming in contact with a part of an outer peripheral surface of the tread portion when the tire is rotated in the circumferential direction by the motor, and
wherein the applicator includes a presser configured to press a contact surface of the contact member against the tread portion.

10. A tire repairing method to restore a hardened tread portion of a tire, the tire repairing method comprising:
using a support to support the tire in such a manner that the tire can rotate in a circumferential direction of the tire;
imparting a rotational driving force to the tire, thereby rotating the tire in the circumferential direction of the tire; and
softening a rubber component of a tread portion of a tire after vulcanizing molding by applying a softening agent having a softening effect to the tread portion and causing the softening agent to permeate the tread portion,
wherein the softening agent is applied with an applicator to an entire region of an outer peripheral surface of the tread portion by causing a contact member holding the softening agent to come in contact with a part of the outer peripheral surface of the tread portion of the tire that is rotated, and
wherein the applicator includes a presser configured to press a contact surface of the contact member against the tread portion.

11. The tire repairing method according to claim 10 , wherein in the imparting a rotational driving force to the tire, an idle rotator idle-rotates the tire mounted on a vehicle.

12. The tire repairing method according to claim 10 , further comprising heating the tread portion, wherein the additive is applied to the tread portion heated by the heating.

13. A tire manufacturing method comprising:
using a support to support the tire in such a manner that the tire can rotate in a circumferential direction of the tire;
imparting a rotational driving force to the tire, thereby rotating the tire in the circumferential direction of the tire; and
softening a rubber component of a tread portion of a tire after vulcanizing molding by applying a softening agent having a softening effect to the tread portion and causing the softening agent to permeate the tread portion,
wherein the softening agent is applied with an applicator to an entire region of an outer peripheral surface of the tread portion by causing a contact member holding the softening agent to come in contact with a part of the outer peripheral surface of the tread portion of the tire that is rotated, and
wherein the applicator includes a presser configured to press a contact surface of the contact member against the tread portion.

Assignees

• Sumitomo Rubber Ind

Inventors

• Okudaira Saki
• Nagase Takayuki
• Sakamoto Masayuki
• Takai Yuichi
• Hirose Kotaro

Classifications

• B29D2030/544

  Applying an intermediate adhesive layer, e.g. cement or cushioning element between carcass and tread · CPC title

• B29C73/305

  specially adapted for toroidal articles, e.g. tyres (B29C73/325 takes precedence) · CPC title

• B29D2030/667

  Treads with antiskid properties, e.g. having special patterns or special rubber compositions · CPC title

• B29D2030/0637

  Correcting by adding material · CPC title

• B29D30/0633

  After-treatment specially adapted for vulcanising tyres · CPC title