Back to results
US 9,038,432 B2Granted
Apparatus and method for producing springs
AssigneeSpuhl AG
InventorsBernhard Graf, Michael Egli
Life of this patent
Estimating the term…
Abstract
Using a method for producing a spring from a spring wire, turns of a first spring part are produced, wherein said produced turns move in a first direction. Thereafter, turns of a second spring part are produced, wherein said produced turns move in a second direction which is different from, in particular opposite of, the first direction. Such a method can be used to produce a spring having a plurality of spring parts.
Claims18
A method for producing a spring from a spring wire, comprising the steps of:
- producing coils of a first spring part, which produced coils move in a first direction, by feeding the spring wire to a forming roller and a first deflection element, and
- producing coils of a second spring part thereafter, which latter produced coils move in a second direction, by feeding the spring wire to the forming roller and a second deflection element,
- wherein said second direction is different from the first direction,
- wherein the coils of the first spring part are movable along a first center axis in the first direction, and
- wherein the coils of the second spring part are movable along a second center axis in the second direction.
2 more elements
An apparatus for producing a spring from a spring wire, said apparatus comprising:
- a forming unit adapted to produce coils of a first spring part, said produced coils being movable in a first direction, and adapted to produce coils of a second spring part thereafter, wherein these produced coils of the second spring part are movable in a second direction which is different from the first direction,
- wherein the forming unit comprises at least one forming roller, a first deflection element and a second deflection element, wherein the spring wire can be fed to the forming roller, whereupon the forming roller forms the spring wire, and wherein the first deflection element is designed to define a pitch of the first spring part and the second deflection element is designed to define a pitch of the second spring part.
Dependencies are inferred from the claim text.