Centering bush
AssigneeHoechst Aktiengesellschaft
InventorNorbert Born
Life of this patent
Estimating the term…
Abstract
A centering bush for connecting and centering winder cores which stand on one another. The centering bush, in one embodiment, has first and second cylindrical parts on both sides of a median plane, of which the first part lies above the plane, and the second part lies below the median plane. The first and second cylindrical parts are adjoined on both sides by parts that are conically shaped towards a median axis of the centering bush. Projections in the form of sharp-edged spikes with rounded ends are arranged on the outer circumference of the centering bush in the region of the median plane.
Claims21
A centering bush for centering and connecting winder cores standing on one another, said centering bush having a median plane and a median axis, and comprising:
- at least one hollow annular part including an outer circumference and an inner surface, said hollow annular part extending on both sides of said median plane;
- first and second hollow conical parts, each of said first and second hollow conical parts having an outer surface and an inner surface, said first and second hollow conical parts being adjacent to and on opposite sides of said at least one hollow annular part so that said first and second hollow conical parts and said at least one hollow annular part merge without an intermediate wall to form a hollow and self-closed structure with said inner surface of said at least one hollow annular part and said inner surface of each of said first and second hollow conical parts being aligned to define a cylindrical inner surface parallel with the median axis;
- and
- at least one sharp-edged projection arranged on said outer circumference of said at least one hollow annular part.
The centering bush for centering and connecting winder cores standing on one another, said centering bush having a median plane and a median axis, and comprising:
- at least two hollow cylindrical parts, each including an outer circumference, and each of said two hollow cylindrical parts extending on opposite sides of said median plane;
- first and second hollow conical parts provided on opposite sides of said median plane;
- and
- at least one sharp-edged projection arranged on said outer circumference of at least one of said at least two hollow cylindrical parts;
- wherein said first and second hollow conical parts are adjacent to said at least two hollow cylindrical parts and are, respectively, on opposite sides of said at least two hollow cylindrical parts;
- and
- wherein each of said first and second hollow conical parts comprise a hollow structure open toward said median plane.
A method of forming a dispatch unit of wound rolls, comprising the steps of:
- aligning a first winder roll with a winder core in a stacking orientation;
- inserting a centering bush with at least one projection into said winder core of said first winder roll, said centering bushing having first and second hollow conical parts that are located on opposite sides of and adjacent a hollow annular part so that said first and second hollow conical parts merge with said hollow annular part without an intermediate wall so that an inner surface of each of the first and second hollow conical parts aligns with an inner surface of said hollow annular part to define a cylindrical inner surface parallel with a median axis of the centering bush;
- and
- stacking a second winder roll with a winder core onto said first winder roll without an air gap.
A method of forming a dispatch unit of wound rolls, comprising the steps of:
- aligning a first winder roll with a winder core in a stacking orientation;
- inserting a centering bush with at least one projection into said winder core of said first winder roll, said centering comprising at least two hollow cylindrical parts extending on opposite sides of a median plane of said centering bush, first and second hollow conical parts provided on opposite sides of said median plane, and at least one sharp-edged projection arranged on an outer circumference of at least one of said at least two hollow cylindrical parts so that said first and second hollow conical parts are adjacent to said at least two hollow cylindrical parts and are, respectively, on opposite sides of said at least two hollow cylindrical parts and each of said first and second hollow conical parts comprise a hollow structure open toward said median plane;
- and
- stacking a second winder roll with a winder core onto said first winder roll without an air gap.
Dependencies are inferred from the claim text.