Manufacturing method and manufacturing device of sheet-like belt

Patent metadata

Field	Value
Publication number	US-11046039-B2
Application number	US-201816218563-A
Country	US
Kind code	B2
Filing date	Dec 13, 2018
Priority date	Dec 28, 2017
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A manufacturing method includes feeding a master roll 8 a from a master roll table 10 to a belt table 14 , and cutting the master roll 8 a between the master roll table 10 and the belt table 14 . In the step of feeding the master roll 8 a from the master roll table 10 to the belt table 14 , the master roll 8 a is fed by holding a front part of the master roll 8 a by a first hand 30 and a rear part of the master roll 8 a by a second hand 40 , and the front part of the master roll 8 a is continuously held by the first hand 30 from start to end of the feeding.

First claim

What is claimed is:

1. A manufacturing method of a sheet-like belt including cutting of a master roll formed by covering multiple belt cords lined up parallel to one another with rubber, comprising:
placing the master roll on a master roll table;
feeding the master roll from the master roll table to a belt table situated adjacent to the master roll table in a same direction as a longitudinal direction of the master roll; and
cutting the master roll between the master roll table and the belt table,

wherein:
in the step of feeding the master roll from the master roll table to the belt table, the master roll is fed by holding a front part of the master roll in a feeding direction by a first hand and a rear part trailing the front part in the feeding direction by a second hand; and
the front part of the master roll in the feeding direction is continuously held by the first hand from start to end of the feeding,
the step of feeding the master roll from the master roll table to the belt table includes a repetition of feeding of the master roll for a short distance and stopping of the feeding; and
the second hand feeds the master roll by holding the master roll while the master roll is fed for the short distance, and releases the master roll, moves backward in the feeding direction of the master roll, and holds the master roll again while the feeding of the master roll is stopped.

2. The manufacturing method of the sheet-like belt according to claim 1 , wherein:
the first hand and the second hand hold the master roll by force and lift the master roll from contacting the master roll table and the belt table and hold the master roll above the master roll table and the belt table.

3. The manufacturing method of the sheet-like belt according to claim 2 , wherein:
while the master roll is fed, air is blown out from a blow hole provided to the master roll table toward the master roll placed above.

4. The manufacturing method of the sheet-like belt according to claim 1 , wherein:
a slip of the master roll is detected when the master roll slips on the first and/or the second hand.

5. The manufacturing method of the sheet-like belt according to claim 1 , wherein the first hand and the second hand hold the master roll by magnetic force.

6. The manufacturing method of the sheet-like belt according to claim 1 , wherein the first hand and the second hand move at a same speed.

7. The manufacturing method of the sheet-like belt according to claim 1 , wherein when the feeding of the master roll to the belt table ends, the first hand and the second hand release the master roll and simultaneously a plurality of magnets on the belt table move up and attract a first side and a second side of the master roll in the width direction onto the belt table.

8. The manufacturing method of the sheet-like belt according to claim 4 , wherein a slip detector having a roller is provided for the second hand, the roller makes contact with the master roll when the second hand holds the master roll, and the roller rotates and a slip of the master roll is detected when the master roll slips on the second hand.

9. The manufacturing method of the sheet-like belt according to claim 1 , wherein the belt table is placed diagonally with respect to the master roll table,
the master roll is placed on the master roll table in such a manner that the longitudinal direction of the master roll and a longitudinal direction of the master roll table coincide with each other,
the belt cords are extended in the same direction as the longitudinal direction of the master roll, and
the master roll is cut diagonally with respect to the longitudinal direction between the master roll table and the belt table.

Assignees

• Toyo Tire & Rubber Co
• Toyo Tire Corp

Inventors

• Itakura Junji

Classifications

• B29D2030/088

  by using a seamless tubular component, e.g. an inner liner, a carcass structure or a belt/breaker during tyre manufacturing on a core or a building drum · CPC title

• B29D2030/381

  the inserts incorporating reinforcing parallel cords; manufacture thereof · CPC title

• B29D30/48

  Bead-rings or bead-cores (from wire B21F37/00); Treatment thereof prior to building the tyre · CPC title

• B29D2030/705

  the breakers being obtained by cutting a continuous reinforced strip into predefined lengths and placing the cut strips side by side on a suitable support, e.g. a toroidal core or a carcass · CPC title

• B60C9/20

  built-up from rubberised plies each having all cords arranged substantially parallel · CPC title