Apparatus and method for manufacturing rubber sheet reinforced with cord
AssigneesFuji Seiko Co., Ltd., Fuji Shoji Co., Ltd.
InventorsSigemasa Takagi, Tosiaki Morisaki, Hikaru Yamada
Life of this patent
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Abstract
The invention resides in enabling high-mix low-volume production by a compact apparatus for a rubber sheet reinforced with a cord of a belt material for a tire, a body-ply material, etc. variously changing a cord material, cord arrangement angle, width of sheet, etc. and relates to manufacturing apparatus and method for a rubber sheet reinforced with a cord according to wrapping around a rubber coated cord group continuously on a surface of a pair of a cylindrical rotating body rotating in the same direction or on a surface of a cylindrical rotating body disposed small diameter roller groups of plural number on a side surface of a cylinder.
Claims18
A manufacturing apparatus for a rubber sheet reinforced with a cord comprising:
- a pair of cylindrical rotating bodies rotating in the same direction, wherein the axes of rotation of the cylindrical rotating bodies are disposed at an oblique, predefined angle to each other,
- a supply guide supplying a rubber coated cord group to the cylindrical rotating bodies,
- the apparatus configured (1) to form a cylindrical rubber sheet by spirally wrapping the rubber coated cord on the pair of cylindrical rotating bodies so that the rubber coated cord is continuously brought into contact with the rubber coated cord already spirally wrapped on the pair of cylindrical rotating bodies and (2) to move the cylindrical rubber sheet on the pair of cylindrical rotating bodies along the axial direction of the cylinder, characterized in that;
- at least one of the pair of cylindrical rotating bodies is formed of a plurality of small rollers forming a roller group;
- and
- the axis direction of each of the small rollers of the cylindrical rotating body is disposed obliquely at a predefined angle from parallel with the axis direction of the adjacent small rollers.
A manufacturing apparatus for a rubber sheet reinforced with a cord according to clam 1, wherein the apparatus further has a presser tool to press said cylindrical rubber sheet.
A manufacturing apparatus for a rubber sheet reinforced with a cord according to clam 1, further including a cutter wherein said cylindrical rubber sheet made by wrapping the rubber coated cord group around on said cylindrical rotating body is cut away spirally thereby providing a rubber sheet in which the cord is arranged at a predefined angle a a to a longitudinal direction of a sheet.
A manufacturing apparatus for a rubber sheet reinforced with a cord according to clam 1, wherein a rubber extruder having a rubber coating die is provided upstream of said supply guide, the rubber coated cord group being guided to said cylindrical rotating bodies through the supply guide after the cord has continuously passed through the rubber coating die and has become coated with rubber extruded from the rubber extruder.
A manufacturing apparatus for a rubber sheet reinforced with a cord according to clam 1, comprising a cord supplying section having a twister or an assembly winder wherein the cord supplying section is formed to unreel, thereby giving a twist to the cord;
- and the cord supplying section is formed to guide the twisted cord to said cylindrical rotating bodies through said supply guide.
A manufacturing method for a rubber sheet reinforced with a cord, comprising the steps of:
- supplying a rubber coated cord group through a supply guide to a pair of cylindrical rotating bodies, the cylindrical rotating bodies rotating in the same direction and wherein the axes of rotation of the cylindrical rotating bodies are disposed at an oblique, predefined angle to each other;
- forming a cylindrical rubber sheet by continuously spirally wrapping the rubber coated cord group around the cylindrical bodies;
- contacting the rubber coated cord continuously with more of the rubber coated cord already spirally wrapped on the pair of cylindrical rotating bodies;
- and moving the cylindrical rubber sheet on the pair of cylindrical rotating bodies along an axial direction, characterized in that;
- at least one of the pair of cylindrical rotating bodies is formed of a plurality of small rollers forming a roller group;
- and
- the axis direction of each of the small rollers of the cylindrical rotating body is disposed obliquely at a predefined angle from parallel with the axis direction of the adjacent small rollers.
Dependencies are inferred from the claim text.