Rotary die blade member bending method, and rotary die blade member binding device
OwnerSuehiro Mizukawainventor
Life of this patent
Estimating the term…
Abstract
Method and apparatus for making a rotary die blade from a straight blade blank to be conformable to the contour of the rotary die block include inserting a blade blank between a first press face of a first presser and a second press face of a second presser; and compressing the blade blank by urging either of the first press face or the second press face to the other, thereby elongating the blade blank along its length; wherein the compressive force is differentiated such that a stronger compressive force is applied to the peripheral portion of the blade blank than the inner portion thereof.
Claims13
A method for making a rotary die blade from a straight blade blank, comprising the steps of:
- inserting a blade blank between a first press face of a first presser and a second press face of a second presser;
- and
- compressing the blade blank by separating either of the first press face or the second press face from the other and urging one of them to the other, thereby elongating the blade blank along its length;
- wherein the compressive force is differentiated at a position where the blade blank is compressed, such that a stronger compressive force is applied to the peripheral portion of the blade blank than the inner portion thereof in a widthwise direction of the blade blank.
An apparatus for making a rotary die blade from a straight blade blank which has an edge at one end in a widthwise direction, comprising:
- a pair of pressers comprising a first and a second presser having narrow press faces arranged with the blade blank placed therebetween so as to be able to separate them from each other and approach them to one another;
- and
- a means for separating the pressers from each other and urging the pressers to one another so as to compress and elongate the blade blank, wherein
- the compressive force is differentiated at a position where the blade blank is compressed, such that a stronger compressive force is applied to the peripheral portion of the blade blank than the inner portion thereof in a widthwise direction of the blade blank.
Dependencies are inferred from the claim text.