公开(公告)号：EP2599566B1

公开(公告)日：2017-12-20

申请号：EP11812598.8

申请日：2011-07-28

Applicant: NHK Spring Co., Ltd.

Inventor： KATSUYAMA, Akira ,  MORISHIMA, Takayuki ,  YAJIMA, Takashi ,  MORI, Yuji ,  NUKUI, Kotaro

IPC: B21F3/02 ,  B21F35/00 ,  F16F1/06

CPC classification number: B21F3/02 ,  B21F35/00

Abstract: A coil wire material (30) is bent by a first roll (32), a second roll (34), and a third roll (36). The bent coil wire material (30) is pressed in a screwing direction, to shape a coil spring having a desired diameter and a pitch. A desired pitch can be accurately formed in a manner that a second roll (34) provided on a downstream side of a conveying direction of the coil wire material (30) is configured to be able to move back and forth along the screwing direction of the coil spring and to be tiltable about an axis of rotation parallel to the conveying direction of the coil wire material (30).

公开(公告)号：EP2599566A1

公开(公告)日：2013-06-05

申请号：EP11812598.8

申请日：2011-07-28

Applicant: NHK Spring Co., Ltd.

Inventor： KATSUYAMA, Akira ,  MORISHIMA, Takayuki ,  YAJIMA, Takashi ,  MORI, Yuji ,  NUKUI, Kotaro

IPC: B21F3/02 ,  B21F35/00 ,  F16F1/06

CPC classification number: B21F3/02 ,  B21F35/00

Abstract: A coil wire material (30) is bent by a first roll (32), a second roll (34), and a third roll (36). The bent coil wire material (30) is pressed in a screwing direction, to shape a coil spring having a desired diameter and a pitch. A desired pitch can be accurately formed in a manner that a second roll (34) provided on a downstream side of a conveying direction of the coil wire material (30) is configured to be able to move back and forth along the screwing direction of the coil spring and to be tiltable about an axis of rotation parallel to the conveying direction of the coil wire material (30).

Abstract translation: 线圈线材（30）由第一辊（32），第二辊（34）和第三辊（36）弯曲。 弯曲的线圈线材（30）以螺纹方向被按压，以形成具有所需直径和间距的螺旋弹簧。 期望的间距可以以使得设置在线圈线材（30）的输送方向的下游侧的第二辊（34）被构造成能够沿着线圈线材的旋转方向前后移动的方式被精确地形成 并且能够绕平行于线圈线材（30）的输送方向的旋转轴线倾斜。

公开(公告)号：EP3263243A1

公开(公告)日：2018-01-03

申请号：EP16755169.6

申请日：2016-02-04

Applicant: NHK Spring Co., Ltd.

Inventor： ICHITSUKA, Yuu ,  MORI, Yuji

IPC: B21F35/00 ,  B21F35/02

CPC classification number: B21F3/04 ,  B21F35/00 ,  B21F35/02 ,  F16F1/04

Abstract: A coil spring manufacturing device (10) includes a mandrel (11) around which a wire (W) is wound, a feed mechanism (12) which feeds the wire (W) toward the mandrel (11), guide members (15, 16) which guide the wire (W), a chuck (13) which fixes a distal end (W1) of the wire (W), and a clamp mechanism (71). The clamp mechanism (71) sandwiches the wire (W) from both sides before the distal end (W1) of the wire (W) reaches the mandrel (11). Further, the clamp mechanism (71) can be rotated about a fulcrum (80) by rotation means, and can also be slid in a direction along an axis (X1) of the mandrel (11) by slide means. In a state in which the wire (W) is sandwiched by the clamp mechanism (71), the clamp mechanism (71) is rotated, and if necessary, is slid. Thereby, a bent portion (W2) for a negative pitch portion of a coil spring is formed at a part of the wire (W).

Abstract translation: 本发明提供一种螺旋弹簧的制造装置，该螺旋弹簧的制造装置（10）具备：卷绕有金属丝（W）的芯轴（11）;将该金属丝（W）向芯轴（11）送出的送出机构（12）;引导部件 ），导线（W），固定导线（W）的远端（W1）的卡盘（13）和夹紧机构（71）。 夹紧机构71在金属丝W的末端W1到达心轴11之前从两侧夹住金属丝W. 此外，夹紧机构71可以通过旋转装置围绕支点80旋转，并且也可以通过滑动装置沿着心轴11的轴线X1的方向滑动。 在利用夹紧机构（71）夹持电线（W）的状态下，使夹紧机构（71）旋转，根据需要滑动。 由此，在电线（W）的一部分上形成用于螺旋弹簧的负节距部分的弯曲部分（W2）。