Patent ID: 11964321
Assignee: NHK SPRING CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A coiling machine comprising:
feed rollers to move a wire;
a wire guide into which the wire is inserted;
a first forming roller with which the wire coming out of the wire guide comes into contact;
a second forming roller disposed on a front side of a movement direction of the wire with respect to the first forming roller, which forms an arc portion by bending the wire between the first forming roller and the second forming roller;
a support mechanism which supports the arc portion of the wire, wherein the support mechanism comprises:
a pitch tool disposed on a front side of the movement direction of the wire with respect to the second forming roller and brought into contact with one surface of the arc portion of the wire, the pitch tool pushing the one surface of the arc portion toward a direction in which a coil spring grows; and
a clamping tool disposed between the second forming roller and the pitch tool, the arc portion of the wire being sandwiched between the clamping tool and the pitch tool in a radial direction of the wire, wherein the support mechanism prevents the arc portion from moving in the radial direction of the wire; and

a cutting rotor which cuts the wire supported by the support mechanism in the radial direction of the wire between the second forming roller and the pitch tool.