Shutter manufacturing method
AssigneeSony Corporation
InventorShuichi Kikuchi
Life of this patent
Estimating the term…
Abstract
A method of manufacturing shutters for computer disks, optical disks and the like, includes forming a rib on a connecting member formed between adjoining shutter blanks during bending and cutting processing. The rib is concave in cross-section and increases a strength of the connecting portion such that stress applied during bending processing, and movement of the rolled steel which is used for manufacturing, does not deform the connecting portion. According to this, processing speed for manufacturing may be increased and further, thinner material may be utilized in forming the shutters. Also, at a later stage of processing, the convex ribs may again be flattened.
Claims13
A method of forming a plurality of shutters, comprising the steps of:
- feeding an elongate metal sheet in a given feeding longitudinal direction;
- applying punching processing to said metal sheet to successively form a plurality of shutter blanks having a length thereof in said longitudinal direction, each of said shutter blanks having a forward edge and a rearward edge extending about transverse to the length, said rearward edge of a first shutter blank being connected at an end of a connecting portion having an opposite end connected to a forward edge of a second adjacent shutter blank, said connecting portion having first and second longitudinal sides intermediate opposed edges of said adjacent shutter blanks;
- forming a reinforcing rib between said ends of said connecting portions where said ends adjoin adjacent shutter blanks;
- applying bending processing successively to said shutter blanks for establishing a final configuration of said shutters;
- removing said connecting portions;
- and
- further including, at a time prior to said step of removing, a step of pressing said reinforcing rib flat.
In a method of forming shutters by midpoint forming bending processing, comprising the steps of:
- feeding an elongate metal sheet in a given longitudinal feeding direction;
- applying punching processing to said metal sheet to successively form a plurality of shutter blanks having a length thereof in said longitudinal feeding direction, each of said shutter blanks having a forward edge and a rearward edge extending about transverse to the length thereof, said rearward edge of a first shutter blank being connected at an end of a connecting portion having an opposite end connected to a forward edge of a second adjacent shutter blank, said connecting portion having first and second longitudinal sides intermediate opposed edges of said adjacent shutter blanks;
- forming a reinforcing rib between said ends of said connecting portions where said ends adjoin adjacent shutter blanks;
- transporting said plurality of shutter blanks to a bending processing location;
- applying bending processing simultaneously to said plurality of shutter blanks for establishing a final configuration therefor;
- removing said connecting portions;
- and
- wherein after said transporting step, the step of pressing processing is performed for flattening said reinforcing rib portion.
Dependencies are inferred from the claim text.