Device for winding a strip material into a coil

Abstract

The invention relates to a device for winding a strip material into a coil. The device comprises a winding mandrel (1) having a shaft element (2) and radially movable segments (16) mounted on the shaft element for winding and unwinding the strip material. The device further comprises an actuating drive (26) for spreading or collapsing the segments. The device also has a rotary drive (5) for rotationally driving the winding mandrel. To achieve a simpler and more economical design, a displacement device (60) is provided for axially displacing the actuating drive (26) together with the winding mandrel (1).

Claims

1. A device for winding a strip material into a coil, comprising a single winding mandrel (1) having a shaft element (2) and radially displaceable segments (16) mounted on the shaft element (2) for winding the strip material onto the segments; an actuation drive (26) for displacing the segments (16) relative to the shaft element (2) with actuation elements (29) either further radially outwardly or further radially inwardly; and a rotary device (5) for rotationally driving the single winding mandrel, wherein the actuation drive (26) and the rotary device (5) are arranged on axially opposite end sides of the single winding mandrel (1), wherein a displacement device (60) is provided for an axial displacement of the actuation drive (26) together with the single winding mandrel (1).

2. The device according to claim 1, wherein an actuation drive side thrust bearing and a rotary drive side thrust bearing (52, 54) are provided for axially and rotationally supporting the shaft element (2) at the both ends thereof.

3. The device according to claim 2, wherein the rolling drive side bearing (54) is formed as a coupling bearing for releasably connecting and disconnecting the shaft element (2) to and from the rotary drive (5).

4. The device according to claim 3, wherein the shaft element (2) has, on the side of the rotary drive (5), a rotary drive journal section (8) that fixedly but releasably connects the shaft element with an output shaft of the rotary drive (5).

5. The device according to claim 4, wherein the coupling bearing (54) is formed as a flat, or a spline bearing and journal bearing the rotary drive journal section (8) is formed as a flat journal or a spline journal cooperating with the flat journal bearing or the spline bearing.

6. The device according to claim 1, wherein the actuation drive (26) is axially arranged adjacent to the radially displacement segments (16) for directly controlling the segments (16) with the actuation elements (29).

7. The device according to claim 6, wherein the actuation drive (26) actuation elements (29) are interposed between and the radially displaceable segments (16).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The drawings show:

(2) FIG. 1 a simplified cross-sectional view of the inventive device with a rolling drive side bearing formed as a spline bearing; and

(3) FIG. 2 a simplified cross-sectional view of the inventive device with a rolling drive side bearing formed as a flat bearing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(4) The subject matter of the invention will be further described in form of an exemplary embodiment with reference to FIG. 1.

(5) FIG. 1 shows the inventive device for winding a strip material into a coil. To this end, the device includes a winding mandrel 1 having a shaft element 2 and radially displaceable segments 16 mounted on the shaft element. During the rotational movement of the winding mandrel, the strip material can be wound into a coil on the segments 16, or the strip material can be unwound from the coil.

(6) The device further comprises an actuation drive 26 for displacing the segments 16 relative to the shaft element 2 with actuation elements 29. The displacement of the segments can consist in expansion of the segments, i.e., in a radial displacement of the segments further radially outwardly with respect to the shaft element or in collapsing of the segments, i.e., in displacement of the segments 16 further radially inwardly with respect to the shaft element 2.

(7) Finally, the device has a rotary drive 5 for rotationally driving the winding mandrel 1. As shown in FIG. 1, the actuation drive 26 and the rotary drive 5 are arranged on opposite end sides of the winding mandrel 1.

(8) As further shown in FIG. 1, the winding mandrel or, in particular its shaft element is supported on its opposite ends. To this end, a thrust bearing 52 and a thrust bearing 54 are provided on the actuation drive side and the rotary drive side, respectively. With a predetermined total load, both trust bearings should be advantageously designed for carrying, respectively, about a half of the total load. Also, the winding mandrel or the shaft element can be designed to be lighter than when it should be designed as a free console for the same predetermined total load.

(9) The rotary drive is usually secured, together with a gearbox, stationary in the foundation. The rotary drive side thrust bearing 54 is preferably formed as a coupling bearing for releasably connecting or disconnecting the shaft element 2 to or from the rotary drive. For transmission of a rotary torque from the rotary drive to the shaft element 2, its rotary drive side journal, i.e., the rotary drive side journal section 8 is formed, e.g., as a flat journal 9, or with a square or polygonal cross-section.

(10) As shown in FIG. 1, the actuation drive 26 is preferably axially arranged immediately adjacent to the radially displaceable segments. The advantage of this consists in that the segments can be directly controlled for radial displacement.

(11) FIG. 1 further shows a displacement device 60 for displacing the winding mandrel 1, together with the actuation drive 26 and the actuation elements 29, in particular, in the axial direction, i.e., in the direction shown in FIG. 1 with a double arrow.

LIST OF REFERENCE NUMERALS

(12) 1 Winding mandrel 2 Shaft element 5 Rotary drive 8 Rotary drive journal section 16 Segment 26 Actuation drive 29 Actuation elements 52 Actuation drive side thrust bearing 54 Rotary drive side thrust bearing 60 Displacement drive