Title:
コイリングマシンと、コイルばねの製造方法
Document Type and Number:
Japanese Patent JP7258545
Kind Code:
B2
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).
Inventors:
Takeshi Furuse
Daiki Hagiwara
Takuya Sato
Yuichiro Yamauchi
Daiki Hagiwara
Takuya Sato
Yuichiro Yamauchi
Application Number:
JP2018246709A
Publication Date:
April 17, 2023
Filing Date:
December 28, 2018
Export Citation:
Assignee:
Nippon Jojo Co., Ltd.
International Classes:
B21F35/00; B21F3/02; B21F3/06; B21F11/00
Domestic Patent References:
| JP2016155162A | ||||
| JP2003010937A | ||||
| JP50052687A | ||||
| JP62050028A | ||||
| JP4317252B2 |
Foreign References:
| FR1211009A | ||||
| WO2016208033A1 |
Attorney, Agent or Firm:
Suzue International Patent Office