Method and device for forming groove line in sheet-like member
OwnerNobuyuki Sudainventor
Life of this patent
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Abstract
A sheet of a rubber material is rolled by a pair of rotating rolling rollers 12 and 13 opposed to each other to form a sheet 1. Sheets 1 are superposed and laminated to form a structural component of a tire. At least the rolling roller 12 is provided with an annular protrusion 20 and annular grooves 21 for shaping the sheet 1. Fine ridges 12a (31a) are formed in the surfaces of the annular protrusion 20 and the annular grooves 21. When the rolling rollers 12 and 13 are rotated to form the sheet 1, furrows and fine grooves 2 for releasing air are formed simultaneously in the surface of the sheet 1. The sheet 1 provided with the furrows and the fine grooves can be formed by a reduced number of manufacturing steps, while the fine grooves with the same shape can be formed.
Claims15
A method of producing a sheet with grooves, said method comprising the steps of:
- preparing a pair of rolling rollers, at least one of which is an embossing roller having a peripheral surface provided with a plurality of ridges;
- and
- simultaneously forming a sheet by rolling and forming a plurality of grooves in a surface of the sheet by feeding a rubber material between the rotating pair of rolling rollers.
An apparatus for producing a sheet with grooves comprising:
- a pair of rolling rollers opposed to each other to roll a workpiece fed thereto into a sheet,
- at least one of the pair of rolling rollers being an embossing roller having an embossing surface for shaping the sheet, said embossing surface having a plurality of ridges formed therein.
Dependencies are inferred from the claim text.