Expansion tool for expanding tube ends and pressing device comprising such an expansion tool
AssigneeGustav Klauke GmbH
InventorEgbert Frenken
Life of this patent
Estimating the term…
Abstract
The invention relates to an expansion tool for expanding tube ends. The expansion tool has an expansion mandrel and a counter-support, said expansion mandrel consisting of a tow-bar and an elastic rubber expansion element surrounding it. The counter-support supports the expansion element on the base extremity and radially surrounds it at a distance. In order to improve an expansion tool of the above-described kind, the tow-bar is anchored in a bolt fastening element and the counter-support can be impinged upon via a pressure bar element that projects beyond the bolt fastening element in the longitudinal direction of the tow-bar.
Claims31
An expansion tool for expanding tube ends comprising:
- an expansion mandrel including a pull rod and an elastic rubber expansion element having a foot end which surrounds said pull rod, said pull rod having an axis defining an axial direction;
- and
- a counter-support supporting the expansion element at the foot end and surrounding said expansion element radially at a spacing therefrom,
- fastening element in which said pull rod is anchored, said fastening element having a push-rod element which extends beyond an end of said fastening element in said axial direction of said pull rod, and a bolt connecting said fastening element to a device acting on the push-rod element, and
- the counter-support being engageable by said push-rod element.
An assembly comprising:
- a pressing device;
- and
- an expansion tool for expanding tube ends, the expansion tool having an expansion mandrel comprising a pull rod and an elastic rubber expansion element having a foot end which surrounds the pull rod, and a counter-support supporting the expansion element at the foot end of the elastic rubber expansion element and surrounding said expansion element radially at a spacing therefrom, a push-rod element moveable by said pressing device, the pull rod being fixedly connected to the pressing device, while the counter-support being engageable by said push-rod element.
An expansion tool for expanding tube ends comprising:
- an expansion mandrel comprising a pull rod and an elastic rubber expansion element having a foot end which surrounds the said pull rod, said pull rod having an axis defining an axial direction;
- a counter-support supporting the expansion element at the foot end and surrounding the foot end radially at a spacing therefrom;
- a bolt-fastening element having two sides, said pull rod being anchored in said bolt-fastening element;
- a push-rod element which extends on both sides beyond the bolt-fastening element in said axial direction of the pull rod, said counter-support being engageable by said push-rod element;
- and
- a bolt-accommodating bore provided in said bolt-fastening element, said bolt-accommodating bore extending transversely to the longitudinal direction of the pull rod.
Dependencies are inferred from the claim text.