Winding device for strand shaped winding material

Abstract

A winding device for winding a strand like winding material is disclosed. The winding device includes a winding disk onto which the strand like winding material is wound, and a housing being arranged adjacently to the winding disk. The winding disk is prevented from moving, for example, from twisting, by at least one magnetic holding device. The magnetic holding device has a first magnetic arrangement, which is connected torque proof to the housing, and a second magnetic arrangement, which is connected torque proof to the winding disk, each magnetic arrangement having a north pole N and a south pole S. Between the first and second magnetic arrangements there is a gap. The first and second magnetic arrangements are magnetically coupled across the gap, wherein the strand shaped winding material is guided through the gap.

Claims

1. A winding device for winding a strand shaped winding material, the device comprising: a winding disk onto which the strand shaped winding material is wound; and a housing being arranged adjacent to the winding disk, wherein the winding disk is prevented from moving and rotating, by at least one magnetic holding device, wherein the magnetic holding device comprises a first magnetic arrangement, which is torque proof connected with the housing and which has a north pole (N) and a south pole (S) and a second magnetic arrangement, which is torque proof connected with the winding disk and which is configured to have a north pole (N) and a south pole (S), wherein a gap is formed between the first magnetic arrangement and the second magnetic arrangement, wherein the first and second magnetic arrangements are magnetically coupled through the gap, wherein the strand shaped winding material is configured to pass through the gap, and wherein the first and second magnetic arrangements are arranged so that the south pole (S) of the first magnetic arrangement is arranged opposite to the north pole (N) of the second magnetic arrangement, wherein the north pole (N) of the first magnetic arrangement is arranged opposite to the south pole (S) of the second magnetic arrangement, and wherein the first or the second magnetic arrangement has at least two hard magnetic sections which are arranged in series.

2. The winding device according to claim 1, wherein each of the at least two hard magnetic sections includes south and north poles, wherein the two poles of the first magnetic arrangement are arranged substantially adjacent to each other in the circumferential direction of the winding disk and wherein the two poles of the second magnetic arrangement are arranged substantially adjacent to each other in the circumferential direction of the winding disk.

3. The winding device according claim 1, wherein the first and second magnetic arrangements are arranged opposite to each other in the radial direction of the winding disk.

4. The winding device according to claim 1, wherein the first magnetic arrangement or the second magnetic arrangement is formed in the shape of a horseshoe.

5. The winding device according to claim 4, wherein the first and second magnetic arrangements are formed in the shape of a horseshoe.

6. The winding device according to claim 1, wherein the first magnetic arrangement and/or the second magnetic arrangement comprises at least one permanent magnet.

7. The winding device according to claim 1, wherein the at least one magnetic holding device comprises at least two magnetic holding devices, wherein the winding disk is prevented from twisting, by the at least two magnetic holding devices, which are arranged along a circumference of the winding disk.

8. The winding device according to claim 7, wherein the at least two magnetic holding devices are arranged opposite to each other in respect to the circumference of the winding disk.

9. The winding device according claim 1, wherein the at least two hard magnetic sections comprise first and second hard magnetic sections each including south and north poles, wherein the north and south poles of the first hard magnetic section respectively face the north and south poles of the first hard magnetic section in the circumferential direction of the winding disk.

10. The winding device according claim 1, wherein each of the at least two hard magnetic sections comprises south and north poles arranged in the radial direction of the winding disk.

11. A winding device for winding a strand shaped winding material, the device comprising: a winding disk onto which the strand shaped winding material is wound; and a housing being arranged adjacent to the winding disk, wherein the winding disk is prevented from moving and rotating, by at least one magnetic holding device, wherein the magnetic holding device comprises a first magnetic arrangement, which is torque proof connected with the housing and which has a north pole (N) and a south pole (S) and a second magnetic arrangement, which is torque proof connected with the winding disk and which is configured to have a north pole (N) and a south pole (S), wherein a gap is formed between the first magnetic arrangement and the second magnetic arrangement, wherein the first and second magnetic arrangements are magnetically coupled through the gap, wherein the strand shaped winding material is configured to pass through the gap, and wherein the first and second magnetic arrangements are arranged so that the south pole (S) of the first magnetic arrangement is arranged opposite to the north pole (N) of the second magnetic arrangement, wherein the north pole (N) of the first magnetic arrangement is arranged opposite to the south pole (S) of the second magnetic arrangement, and wherein the first or the second magnetic arrangement has at least one hard magnetic section, which is arranged essentially in the radial direction of the winding disk.

12. A winding device for winding a strand shaped winding material, the device comprising: a winding disk onto which the strand shaped winding material is wound; and a housing being arranged adjacent to the winding disk, wherein the winding disk is prevented from moving and rotating, by at least two magnetic holding devices, wherein each of the two magnetic holding devices comprises a first magnetic arrangement, which is torque proof connected with the housing and which has a north pole (N) and a south pole (S) and a second magnetic arrangement, which is torque proof connected with the winding disk and which is configured to have a north pole (N) and a south pole (S), wherein a gap is formed between the first magnetic arrangement and the second magnetic arrangement, wherein the first and second magnetic arrangements are magnetically coupled through the gap, wherein the strand shaped winding material is configured to pass through the gap, and wherein the first and second magnetic arrangements are arranged so that the south pole (S) of the first magnetic arrangement is arranged opposite to the north pole (N) of the second magnetic arrangement, wherein the north pole (N) of the first magnetic arrangement is arranged opposite to the south pole (S) of the second magnetic arrangement, and wherein a circumferential pre-stressing of the at least two magnetic holding devices to each other is formed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 illustrates a winding disk and two magnetic holding devices of a winding device according to some embodiments including an illustration of the magnetic field lines.

(2) FIGS. 2a and 2b illustrate detailed illustrations of two magnetic holding devices according to some embodiments with two horseshoe shaped magnetic arrangements.

(3) FIG. 3 illustrates a winding device according to some embodiments with eight evenly spaced magnetic holding devices.

(4) FIG. 4 illustrates a magnetic anchoring device of FIG. 3 in a detailed view.

(5) FIG. 5a is a perspective view of an embodiment with two magnetic holding devices. FIG. 5b is a top view of the embodiment shown in FIG. 5a. FIG. 5c is a top view of an embodiment with three magnetic holding devices. FIG. 5d is a view of the FIG. 5c embodiment seen in the direction of the arrow A shown in FIG. 5c.

DETAILED DESCRIPTION OF CERTAIN INVENTIVE EMBODIMENTS

(6) All figures are shown in a plan view from above on a horizontally arranged winding disk 1.

(7) FIG. 1 shows a schematic view of a winding disk 1, and two magnetic holding devices 2 of a winding device according to some embodiments for a wire 8, whereby the two holding devices 2 are arranged diametrically opposite on the outer edge of the winding disk 1 such that each of the first magnetic arrangement 5 and of the second magnetic arrangement 6 are arranged radially opposite. In each case, the south pole of the first magnetic arrangement 5 is arranged opposite to the north pole of the second magnetic arrangement 6, and vice versa. Each of the first magnetic arrangement 5 is fixed to a (not shown) housing of the winding device. Each of the second magnetic arrangement 6 is fixed to the winding disk 1.

(8) The cylindrical winding disk 1 is connected at its central region to the outer side of a pivot bearing 3, for example, a ball bearing, a needle bearing or a roller bearing, wherein the inner side of the pivot bearing 3 is connected via a vertical suspension and, if necessary, via a further pivot bearing to the housing of the winding device. The winding disk 1 is thereby mounted rotatably in regard to the housing. Thus, transverse forces acting on the winding disk 1 are largely absorbed by the pivot bearing 3 and the suspension. However, the concomitant torques around the vertical axis through the center of the winding disk 1 are not absorbed, the concomitant torques being caused by the winding of the winding strand shaped material.

(9) However, the concomitant rotation of the winding disk 1 is prevented by the two symmetrically arranged magnetic holding devices 2. There is an air gap 4 present, through which the wire 8 is passed and wound onto the outer surface of the winding disk 1, between the respective first magnetic arrangement 5 and the respective second magnetic arrangement 6. The closed magnetic field lines 7 within each magnetic holding device 2 are shown schematically.

(10) In FIGS. 2a and 2b, two embodiments of the magnetic holding devices are shown in detail.

(11) In FIG. 2a, the first magnetic holding device 5 has arranged at its two poles the permanent magnets 9 each having a north pole N and a south pole S, which are arranged in opposite polarity and in the circumferential direction of the winding disk 1 side by side and parallel to each other. The width of the permanent magnets 9 in the circumferential direction of the winding disk 1 is for the embodiment 120 mm, its height in the axial direction of the winding disk 1 is 30 mm, and the gap between them is 10 mm. At its radially outer ends, the two permanent magnets 9 are connected by a backing plate 10 made of soft iron. Thus, the first magnetic arrangement 5 is formed in a horseshoe shape, so that the magnetic field lines leave the first magnetic arrangement 5 only into the air gap 4. The air gap in the embodiment 4 has a width of between 5 mm and 20 mm, e.g., about 15 mm.

(12) In a mirror image way, directly opposite to the first magnetic arrangement 5, a second magnetic arrangement 6 is arranged on the winding disk 1. The difference to the first magnetic arrangement 5 is that the poles of the second magnetic arrangement 6 are formed not by permanent magnets, but by soft iron blocks 11, which are also connected to a backing plate made 10 of soft iron. Thus, the second magnetic arrangement 6 is formed in the shape of a horseshoe. The entire second magnetic arrangement 6 and the backing plate 10 of the first magnetic arrangement 5 are magnetized by the two permanent magnets 9 of the first magnetic arrangement 5, and a closed magnetic flux through the air gap 4 is formed across the two magnetic arrangements 5 and 6.

(13) The magnetic holding device 2 in FIG. 2b differs from that of FIG. 2a only in that the poles of the second magnetic arrangement 6 are not formed by soft iron blocks 11, but that they are also formed by the permanent magnet 9, which are arranged such that poles of different polarity of the four involved permanent magnets 9 are arranged opposite at the air gap 4.

(14) Likewise, it is also possible to provide as a component of the second magnetic arrangement 6 an electromagnet. This can easily be made, for example, by wrapping the backing plate 10 with a coil.

(15) An arrangement according to FIG. 2b can be chosen, for example, when the lateral holding force, e.g., the tangential holding force in regard to the winding disk 1 of an arrangement according to FIG. 2a is not sufficient. This holding force must be such that the concomitant torque caused by the wire 8 and acting on the winding disk 1 is accommodated jointly by all magnetic holding devices 2 taking into account a safety factor. For this embodiment, the achievable holding force of a single magnetic holding device 2 is set, for example, to 100 N.

(16) FIG. 3 shows a winding disk 1 according to some embodiments with eight magnetic holding devices 2, which are arranged uniformly along the circumference of the winding disk 1. In this case, only the first magnetic arrangements 5 are shown schematically as separate units. The diameter of the winding disk 1 for this embodiment is 650 mm.

(17) Also shown is a winding mechanism 12 for the winding material having a first deflection roller 13, which deflects the wire 8, which has been supplied perpendicular from the above winding disk 1, into the horizontal direction, and a second deflection roller 14 which is slightly tilted in regard to the horizontal direction and which deflects the wire 8 in a slight angle down into a direction which is nearly tangential to the winding disk 1. The first deflecting roller 13 and the second deflecting roller 14 are rigidly connected together and driven on a (not shown) rotor over the or around the winding disk 1, in the embodiment of FIG. 3 in the counterclockwise direction. Thereby, the wire 8 is applied to the outer surface of the winding disk 1 in the air gap 4 between the first magnetic arrangements 5 and the second magnetic arrangements 6 tangentially, in order to form the desired windings.

(18) Due to the large number of eight magnetic holding devices 2, the winding disk 1 can be held sufficiently, so as to be prevented from rotating by the torque exerted on the winding disk 1 by the tensioned wire 8. At the same time, it is formed a circumferential pre-stressing of the magnets to each another.

(19) FIG. 4 shows a detail from FIG. 3, wherein one of the eight magnetic holding devices 2 is shown, comprising two horseshoe shaped magnetic arrangements 5 and 6 as shown in FIG. 2b.

(20) FIGS. 5a and 5b show schematically an embodiment with the two magnetic holding devices 2, wherein FIG. 5b shows a top view of the perspective view shown in FIG. 5a.

(21) FIGS. 5c and 5d show schematically an embodiment with the three magnetic holding devices 2, wherein FIG. 5d shows a view in the direction which has been indicated by the arrow A shown in the top view of FIG. 5c.

(22) For both embodiments, the poles of the first and second horseshoe shaped magnetic arrangements 5, 6 are respectively arranged vertically above one another. The first and second magnetic arrangements 5, 6 are also arranged radially opposite to each other.

(23) For the three magnetic holding devices 2, which are shown in FIGS. 5c and 5d, the north poles N and the south poles S of the first and of the second magnetic arrangements 5, 6 point alternately upwards and downwards in the circumferential direction of the winding disk 1.

(24) While the inventive technology has been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims.