Spring winding device, particularly for spring winding machines

US6393888B1 · kind B1 · utility

Assignee

• WAFIOS Aktiengesellschaft · DE

Inventors

• Dietmar Sautter · Lichtenstein, DE
• Karl-Heinz Fritz · Waldenbuch, DE
• Joachim Baerman · Reutlingen, DE
• Franz Decker · Lichtenstein, DE

Key dates

• Filing date: Apr 25, 2000
• Grant date: May 28, 2002
• Expiry date: Apr 25, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21F3/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

In a spring winding device for producing right-hand or left-hand helical springs from wire, with pull-in rollers, a wire guide and two winding apparatuses, each of which has a slide guide body with a slide displaceably arranged therein, every slide guide body is swivelable at its end remote of the wire guide around a swiveling axis directed vertical to the wire guide axis. The two winding apparatuses lie on different sides of the center plane, with a drive for the movement of the slide and a cam drive controlled by a cam disk for swiveling the slide guide body. A shared cam disk with two control portions and at least one rest portion is allocated to the two cam drives. Each control portion serves to introduce controlling movements in one of the two cam drives, while the rest portion, or every rest portion, does not introduce any controlling movements in the cam drive. By rotation of the cam disk, a control portion is connected to the associated cam drive, while the other cam drive contacts the rest portion, wherein the controlled cam drive cooperates in a program-controlled manner with the drive unit for the movement of one of the slides, while the drive unit of the other slide is …