Winding core for winding flat objects
AssigneeFeramatic AG
InventorSimon Clarelli
Life of this patent
Estimating the term…
Abstract
A winding core for winding flat articles. The winding core is substantially cylindrical and hollow and thereby defines a longitudinal axis and a cylinder cavity. The winding core is further rotatable about the longitudinal axis, includes a retaining device disposed in the cylinder cavity, and is symmetrical with respect to a plane of symmetry S perpendicular to thee longitudinal axis. The winding core is configured such that its height is adjustable by varying in the axial direction one of a circumferential surface of the winding core and gap heights of gaps defined in the circumferential surface of the winding core.
Claims20
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising at least one pair of enlargement rings including:
- a first enlargement ring fixed at a first end of the central core;
- a second enlargement ring fixed at a second, opposite end of the central core;
- and
- attaching means disposed on the first enlargement ring and the second enlargement ring for attaching the enlargement rings to at least one of the central core and one another, the attaching means including one of threads, elastic snap closures, closeable groove-and-tongue joints and bayonet catches;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core having a circumference;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising a plurality of pairs of adjusting rings having a circumference and including:
- a first set of a adjusting rings fixed at a first end of the central core;
- a second set of adjusting rings fixed at a second, opposite end of the central core;
- and
- overlapping interconnections defined among the central core, the first set of adjusting rings, and the second set of adjusting rings, a length of each of the overlapping interconnections being adjustable;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core having a circumference;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising a plurality of pairs of adjusting rings having a circumference and including:
- a first set of a adjusting rings fixed at a first end of the central core;
- a second set of adjusting rings fixed at a second, opposite end of the central core;
- and
- fastening means for varying an axial distance between at least one of an adjusting ring and the central core, and respective adjusting rings, the fastening means including bands connecting the central core and the adjusting rings, the bands being bendable only in a circumferential direction with respect to the central core and the adjusting rings for allowing a rotational displacement therebetween, the bands thereby defining respective rotational positions of the central core and the adjusting rings;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising:
- axially oriented channels disposed in the central core;
- axially oriented jacket elements axially displaceable within the channels of the central core, each of the jacket elements having an inner end and an outer end;
- and
- two outer rings, each of the outer rings being disposed at outer ends of alternate ones of the jacket elements at either side of the central core;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising:
- core spirals connected to the central core on either side thereof and having an external diameter identical to an external diameter of the central core;
- adjusting spirals located in between the core spirals and having an external diameter identical to the external diameter of the central core, the adjusting spirals being rotatable for adjusting the length of the winding core;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising circumferential surface parts which can be folded down toward the retaining means;
- and
- retaining means disposed in the cylinder cavity.
A winding core for winding flat articles, the winding core being substantially cylindrical and hollow thereby defining a longitudinal axis and a cylinder cavity and having an axial length, the winding core further being rotatable about its longitudinal axis and symmetrical with respect to a plane of symmetry S perpendicular to its longitudinal axis, the winding core comprising:
- a central core;
- adjusting means operatively connected to the central core for adjusting the axial length of the winding core by varying in the axial direction one of a circumferential surface of the winding core and gap lengths of gaps defined in the circumferential surface of the winding core, the adjusting means comprising a spiral spring disposed on each end of the central core and including turns and a diaphragm for covering the turns, and spring fixing means for fixing pairs of turns of respective springs to one another in both a compressed state where the diaphragm is folded away between the turns, and in an uncompressed state where the diaphragm is stretched between the turns;
- and
- retaining means disposed in the cylinder cavity.
Dependencies are inferred from the claim text.