Cutting blade bending apparatus capable of precisely forming acute angle

A cutting blade bending apparatus comprising:

• a nozzle section for feeding a cutting blade into a bending area through a guide opening which is defined therein in a lengthwise direction of the cutting blade;
• at least one pair of first rotating parts located up and down with the guide opening of the nozzle section positioned therebetween, for bending the cutting blade fed into the bending area, in one direction;
• a first bending member capable of being rotated while being supported by the at least one pair of first rotating parts;
• at least one pair of second rotating parts located up and down with the guide opening of the nozzle section positioned therebetween, for bending the cutting blade fed into the bending area, in the other direction, the first and second rotating parts being coaxially and alternately arranged one with another;
• a second bending member capable of being rotated while being supported by the at least one pair of second rotating parts;
• and
• a driving section for rotatably driving, at a time, the first rotating parts or the second rotating parts.

A cutting blade bending apparatus comprising:

• (A) a first upper rotating body comprising a locking hole positioned eccentrically from the center part thereof, and a guide slot extending from the position adjacently located to the locking hole to generally form a lengthy and circularly curved slot;
• (B) a second upper rotating body located closely to the first upper rotating body, and comprising a locking hole formed at a position corresponding to an end of the guide slot of the first upper rotating body, and a guide slot extending from the position adjacently located to the locking hole to the position corresponding to the locking hole of the first upper rotating body to also generally form a lengthy and circularly curved slot;
• (C) a first lower rotating body identical to the first upper rotating body (A) and separated therefrom by a predetermined distance longer than the height of the cutting blade, the first lower rotating body positioned concentrically with the first upper rotating body;
• (D) a second lower rotating body identical to the second upper rotating body (B) and separated therefrom by the above predetermined distance, the second lower rotating body positioned concentrically with the second upper rotating body;
• (E) a first bending member firmly locked by the locking holes of the first upper and lower rotating bodies, and at the same time rotatably guided by the guide slots of the second upper and lower rotating bodies;
• and
• (F) a second bending member firmly locked by the locking holes of the second upper and lower rotating bodies, and at the same time rotatably guided by the guide slots of the first upper and lower rotating bodies.

A cutting blade bending apparatus comprising:

• (A) a first upper rotating body comprising a locking hole positioned eccentrically from the center part thereof, and a guide slot extending from the position adjacently located to the locking hole to generally form a lengthy and circularly curved slot;
• (B) a second upper rotating body located closely to the first upper rotating body, and comprising a locking hole formed at a position corresponding to an end of the guide slot of the first upper rotating body, and a guide slot extending from the position adjacently located to the locking hole to the position corresponding to the locking hole of the first upper rotating body to also generally form a lengthy and circularly curved slot;
• (C) a second lower rotating body identical to the second upper rotating body (B) and separated therefrom by a predetermined distance longer than the height of the cutting blade, the second lower rotating body positioned concentrically with the second upper rotating body;
• (D) a first lower rotating body identical to the first upper rotating body (A) and closely located below to the second lower rotating body, the first lower rotating body positioned concentrically with the first upper rotating body;
• (E) a first bending member firmly locked by the locking holes of the first upper and lower rotating bodies, and at the same time rotatably guided by the guide slots of the second upper and lower rotating bodies;
• and
• (F) a second bending member firmly locked by the locking boles of the second upper and lower rotating bodies, and at the same time rotatably guided by the guide slots of the first upper and lower rotating bodies.