Method for manufacturing linear cutter, and roller die device for molding linear cutter
AssigneeYamauchi Matex Corporation
InventorRyuji Yamauchi
Life of this patent
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Abstract
A method for manufacturing a linear cutter permits continuous manufacturing of linear cutters and achieving remarkable reduction in processing steps, processing time, and a process cost, and is immediately feasible to linear cutters having special lengths. The method includes the steps of: preparing a pair of roller dies for forming a die hole for processing a wire rod into a predetermined shape, the die hole having keen angle parts for forming a cutting edge; and causing the wire rod to pass through the die hole in a state that the roller dies revolve and thereby forming a sectional shape of the wire rod into a pre-set shape and, at the same time, forming a cutting edge at least at one edge of the wire rod.
Claims11
A method for manufacturing a linear cutter comprising the steps of:
- preparing a pair of roller dies including contact surfaces inclined at angles that are the same as each other;
- engaging the roller dies by contacting the contact surfaces to form a die hole for processing a wire rod into a predetermined shape, the die hole having a keen angle part for forming a cutting edge;
- and
- passing the wire rod through the die hole in a state that the roller dies revolve and thereby forming a sectional shape of the wire rod into a pre-set shape and, at the same time, forming the cutting edge at least at one edge of the wire rod through the keen angle part,
- wherein in the step of engaging the roller dies, the contact surfaces are inclinedly contacted to each other so that deviation between the roller dies caused by load generated when the wire rod passes through the die hole is prevented and the keen angle part is precisely formed.
A roller die device for molding a linear cutter comprising:
- a pair of roller dies including contact surfaces inclined at angles that are the same as each other and contacting each other to engage the roller dies;
- and
- a die hole formed between the roller dies and having a keen angle part, through which a wire rod is adapted to pass in a state that the roller dies revolve so that a sectional shape of the wire rod is formed into a pre-set shape, and a cutting edge is formed at least at one edge of the wire rod through the keen angle part,
- wherein the contact surfaces are inclinedly contacted to each other so that deviation between the roller dies caused by load generated when the wire rod passes through the die hole is prevented and the keen angle part is precisely formed.
Dependencies are inferred from the claim text.