公开(公告)号：EP3903958A1

公开(公告)日：2021-11-03

申请号：EP19901655.1

申请日：2019-12-26

Applicant: NHK Spring Co., Ltd.

Inventor： FURUSE, Takeshi ,  HAGIWARA, Daiki ,  SATO, Takuya ,  YAMAUCHI, Yuichiro

IPC: B21F3/02 ,  B21F3/06 ,  B21F11/00 ,  B21F35/00

Abstract: A coiling machine (10) includes feed rollers (11a, 11b) for moving a wire (1), a wire guide (12), a first forming roller (13), a second forming roller (14), a pitch tool (21), a cutting mechanism (23), and a support mechanism (24) for supporting the wire (1). The cutting mechanism (23) includes a cutting rotor (22). The wire (1) coming out of the wire guide (12) is formed into a helical shape by the first forming roller (13), the second forming roller (14) and the pitch tool (21). After one coil spring of a predetermined length is formed, the wire (1) is cut by moving the cutting rotor (22) in the radial direction of the wire (1). The cutting rotor (22) cuts the wire (1) supported by the support mechanism (24) in the radial direction of the wire (1) between the second forming roller (14) and the pitch tool (21).

公开(公告)号：EP3922377A1

公开(公告)日：2021-12-15

申请号：EP19914558.2

申请日：2019-11-26

Applicant: NHK Spring Co., Ltd.

Inventor： SATO, Takuya ,  YAMAUCHI, Yuichiro ,  FURUSE, Takeshi ,  TANAKA, Ryo

IPC: B21F11/00 ,  B21F35/00

Abstract: A coiling machine 100 includes a laser heating machine 20 configured to irradiate a wire 1 formed into a helical shape with laser light to thereby heat a part of the wire 1, and cutting components 30 configured to cut a portion 1V of the wire after the irradiation of the laser light is stopped, a temperature of the portion being higher than before irradiated with the laser light.