WINDING MATERIAL GUIDE DEVICE

Abstract

A guiding device for a material to be wound for a winding machine includes at least one blade guiding unit comprising two fiber guiding blades, which are rotationally drivable in opposite directions and are configured for feeding a material to be wound to a carrier of material to be wound of the winding machine, and the at least one blade guiding unit is configured for conveying a material to be wound which is implemented of inorganic fibers.

The blade guiding unit comprises at least one fiber guiding blade tip, which has an at least semi-oval exterior geometry, and the blade guiding unit comprises at least one fiber directing element, which is implemented at least partly of an inorganic-fiber compatible material and comprises at least one rounded fiber guiding edge.

Claims

1. A guiding device for a material to be wound for a winding machine, with at least one blade guiding unit comprising two fiber guiding blades, which are rotationally drivable in opposite directions and are configured for feeding a material to be wound to a carrier of material to be wound of the winding machine, wherein the at least one blade guiding unit is configured for conveying a material to be wound which is implemented of inorganic fibers, wherein the blade guiding unit comprises at least one fiber guiding blade tip, which has an at least substantially semi-oval exterior geometry, wherein the blade guiding unit further comprises at least one fiber directing element, which is implemented at least partly of an inorganic-fiber compatible material and has at least one rounded fiber guiding edge.

2. The guiding device for a material to be wound according to claim 1, wherein the fiber guiding blades are implemented at least partly of an inorganic-fiber compatible material.

3. The guiding device for a material to be wound according to claim 1, wherein the blade guiding unit comprises at least one fiber guiding blade tip, which is implemented at least substantially of the inorganic-fiber compatible material.

4. The guiding device for a material to be wound according to claim 1, wherein the blade guiding unit comprises at least one exchangeable fiber guiding blade tip, which is implemented at least substantially of the inorganic-fiber compatible material.

5-7. (canceled)

8. The guiding device for a material to be wound according to claim 1, wherein the at least one blade guiding unit comprises at least one fiber directing element, wherein the material to be wound runs at least substantially tangentially to a rounded fiber guiding edge of the fiber directing element at least in an inlet contact point.

9. The guiding device for a material to be wound according to claim 1, wherein the at least one blade guiding unit comprises at least one fiber directing element, wherein the material to be wound runs at least substantially tangentially to a rounded fiber guiding edge of the fiber directing element at least in an outlet contact point.

10. The guiding device for a material to be wound according to claim 1, wherein the inorganic-fiber compatible material is a phenolic resin compound.

11. The guiding device for a material to be wound according to claim 1, wherein the inorganic-fiber compatible material is a soft metal.

12. The guiding device for a material to be wound according to claim 1, wherein the inorganic-fiber compatible material is a plastics material.

13. The guiding device for a material to be wound according to claim 1, comprising a cleaning unit, which is configured for applying a cleaning fluid onto the blade guiding unit in at least one operating state.

14. A winding machine with at least one guiding device for a material to be wound according to claim 1.

15. A method for winding a material to be wound which is implemented of inorganic fibers by means of a guiding device for a material to be wound according to claim 1.

Description

DRAWINGS

[0028] Further advantages may become apparent from the following description of the drawings. The drawings show an exemplary embodiment of the invention. The drawings, the description and the claims contain a plurality of features in combination. Someone having ordinary skill in the art will purposefully also consider the features separately and will find further expedient combinations.

[0029] It is shown in:

[0030] FIG. 1 a winding machine with a guiding device for a material to be wound, in a front view,

[0031] FIG. 2 the guiding device for a material to be wound with two blade guiding units, in a perspective view from below,

[0032] FIG. 3 the guiding device for a material to be wound with two blade guiding units, in a perspective view from above,

[0033] FIG. 4 a fiber directing element and a fiber guiding blade of the guiding device for a material to be wound in a plan view, and

[0034] FIG. 5 a simplified lateral view showing a fiber guiding blade, a fiber directing element and a carrier of material to be wound.

DESCRIPTION OF THE EXEMPLARY EMBODIMENT

[0035] FIG. 1 shows an exemplary winding machine 12 for winding a material to be wound 26, which is implemented of inorganic fibers, in a front view. Preferably the winding machine 12 is configured for winding a material to be wound 26 which is made of glass fibers or basalt fibers. The winding machine 12 comprises a winding machine housing 54. The winding machine 12 further comprises a winding unit 56. For the purpose of controlling an operation of the winding machine 12, the winding unit 56 comprises a control unit (not shown). The control unit comprises a computing unit, a storage unit and an operating program which is stored in the storage unit and is configured to be carried out by the computing unit.

[0036] The winding unit 56 comprises two winding mandrels 58, 60. The winding mandrels 58, 60 are each embodied cylinder-shaped. The winding mandrels 58, 60 are, for example, made of high-grade steel and/or aluminum. The winding mandrels 58, 60 are furthermore embodied rotatable. The winding mandrels 58, 60 are each supported in such a way that they are rotatable about a winding axis 62, 64. The winding mandrels 58, 60 are respectively embodied as clamping mandrels. The winding mandrels 58, 60 thus each comprise a plurality of clamping jaws (not shown). The winding mandrels 58, 60 are in at least one operating state configured to support respectively one carrier of material to be wound 22, 24 via a force-fit connection. Moreover the winding unit 56 comprises a drive unit (not shown). The drive unit is configured to set the winding mandrels 58, 60 into rotational motion during a winding process, and to confer the torque thus produced to the carriers of material to be wound 22, 24. The winding mandrels 58, 60 are arranged on a turntable 66. The turntable 66 is configured to effect, between two winding processes, a position change of the two winding mandrels 58, 60. Thus a winding process takes place only on one of the winding mandrels 58, 60 respectively, while a change of carriers of material to be wound 22, 24 may be carried out on the respectively other one of the winding mandrels 58, 60.

[0037] Furthermore the winding machine 12 comprises a guiding device for a material to be wound 10, which is configured to feed the material to be wound 26, which is implemented of inorganic fibers, preferably of glass fibers or basalt fibers, to the respective carrier of material to be wound 22, 24. The guiding device for a material to be wound 10 is arranged on a pivot arm 68 of the winding machine 12. The pivot arm 68 is arranged inside the winding machine housing 54 and is hence only slightly indicated in the drawing. During a winding process the pivot arm 68 is pivotable about a pivot point relative to the carrier of material to be wound 22, 24 respectively participating in the winding process. The pivot arm 68 is configured for changing a position of the guiding device for a material to be wound 10 relative to the carrier of material to be wound 22, 24 depending on a bobbin diameter, which increases during the winding process. For the purpose of compensating a change in orientation of the guiding device for a material to be wound 10 relative to the carrier of material to be wound 22, 24 caused by a pivoting of the pivot arm 68, the guiding device for a material to be wound 10 is supported on the pivot arm 68 in a rotational position 72 in such a way that it is adjustable with respect to the carrier of material to be wound.

[0038] FIG. 2 shows the guiding device for a material to be wound 10 in a perspective view from below. FIG. 3 shows the guiding device for a material to be wound 10 in a perspective view from above. In FIG. 3 the guiding device for a material to be wound 10 is shown without an upper housing cover. The guiding device for a material to be wound 10 here comprises, as an example, two blade guiding units 14, 16, which are embodied identically to each other. A drive of the blade guiding units 14, 16 is effected, for example, via an electro-motoric drive 74, which is coupled with the blade guiding units 14, 16 via a drive train 76, which is in this case embodied, as an example, as a belt drive (cf. FIG. 3). The blade guiding units 14, 16 are embodied identically to each other. For better overview, only one of the blade guiding units 14, 16 has been given reference numerals. The following description respectively applies to all blade guiding units 14, 16. The blade guiding units 14, 16 respectively comprise two fiber guiding blades 18, 20, which are rotationally drivable in opposite directions and are configured for feeding the material to be wound 26, which is implemented of inorganic fibers, to the carrier of material to be wound 22, 24 of the winding machine 12. The fiber guiding blades 18, 20 are in particular configured for traversing the material to be wound 26 on the carrier of material to be wound 22, 24, in a manner known to someone having ordinary skill in the art, respectively in lifting directions which are oriented opposite to each other, for the purpose of creating a cross-wound bobbin. A lifting direction reversal is in particular effected by transfer of the material to be wound 26 between the fiber guiding blades 18, 20 in a motion reversal point 78, 80. For the purpose of acting counter to a damage and/or impermissible contamination of the material to be wound 26, thus avoiding waste, at least to a large extent, the fiber guiding blades 18, 20 are embodied partly of an inorganic-fiber compatible material. The blade guiding units 14, 16 comprise fiber guiding blade tips 28, 30, 32, 34, which are embodied at least substantially of the inorganic-fiber compatible material. The fiber guiding blade tips 28, 30, 32, 34 are arranged on extreme ends of the fiber guiding blades 18, 20. The fiber guiding blade tips 28, 30, 32, 34 are connected to the fiber guiding blades 18, 20 via a non-destructively releasable connection, e.g. via a screw connection. The inorganic-fiber compatible material in particular has an abrasion resistance that is at least equal to, preferably many times smaller than an abrasion resistance of the material to be wound 26 which is implemented of inorganic fibers. Preferentially the inorganic-fiber compatible material is a phenolic resin compound, a soft metal or a plastics material.

[0039] Besides the fiber guiding blades 18, 20 the blade guiding units 14, 16 each comprise a fiber directing element 36, 38. The fiber directing elements 36, 38 extend in arc-shaped fashion between the motion reversal points 78, 80 of the fiber guiding blades 18, 20. The material to be wound 26 is guided respectively along the fiber directing elements 36, 38 by the fiber guiding blades 18, 20. To act counter to damage and/or impermissible contamination of the material to be wound 26, thus avoiding waste at least to a large extent, the fiber directing elements 36, 38 are embodied partly of the inorganic-fiber compatible material or are coated with the inorganic-fiber compatible material.

[0040] The guiding device for a material to be wound 10 further comprises a cleaning unit 52, which is configured for applying a cleaning fluid onto the blade guiding unit 14, 16 in at least one operating state (shown in FIG. 3 in only slightly indicating fashion). In particular, the cleaning unit 52 is configured to remove sizings from the blade guiding units 14, 16. Sizings are wetting fluids which are applied onto the material to be wound 26 during production. The sizings are intended, among other purposes, to protect the inorganic fibers of the material to be wound 26, in particular to prevent them from being damaged by mutual friction and/or by friction with machine parts by abrasion, and to prevent cross-fragmentation in case of mechanical impact. The sizings are furthermore configured to improve a smoothness of the material to be wound 26 and to reduce mutual friction of the filaments. Sizing residue may lead to movable parts being glued with each other, in particular during a standstill of the blade guiding units 14, 16, which may result in dysfunction and/or breakdown of the guiding device for a material to be wound 10. To prevent undesired application of the cleaning fluid onto the material to be wound 26, cleaning of the blade guiding units 14, 16 is preferably carried out between two consecutive winding processes, in particular during a position change of the two winding mandrels 58, 60.

[0041] FIG. 4 shows one of the fiber directing elements 36, 38 as well as one of the fiber guiding blades 18, 20 in a plan view. The fiber guiding blade 18, 20 is exemplarily shown in three positions during a rotation 82. The fiber guiding blade tip 28, 30, 32, 34 comprises a semi-oval exterior geometry. In a movement of the fiber guiding blade 18, 20, a cross-section of the material to be wound 26, which is implemented of a plurality of parallel-oriented inorganic fibers, is deformed to an oval by the fiber guiding blade tip 28, 30, 32, 34. During the rotation 82 of the fiber guiding blade 18, 20, the material to be wound 26 moves along the exterior geometry of the fiber guiding blade tip 28, 30, 32, 34. In this an orientation of the oval cross section of the material to be wound 26 towards a motion reversal point 78, 80 changes by at least substantially 90 degrees. As a result of this, fanning-out of the material to be wound 26, in particular individual inorganic fibers separating off, is preventable at least to a large extent.

[0042] FIG. 5 shows a simplified lateral view of a fiber guiding blade 18, 20, of a fiber directing element 36, 38 and of a carrier of material to be wound 22, 24. The material to be wound 26 is conveyed along the fiber directing element 36, 38 and wound onto the rotating carrier of material to be wound 22, 24 by the fiber guiding blade 18, 20. The fiber directing element 36, 38 is arranged below the fiber guiding blade 18, 20. The fiber directing element 36, 38 comprises a rounded fiber guiding edge 40, 42. In an inlet contact point 44, the material to be wound 26 extends at least substantially tangentially to the rounded fiber guiding edge 40, 42 of the fiber directing element 36, 38. In an outlet contact point 48, the material to be wound 26 extends at least substantially tangentially to the rounded fiber guiding edge 40, 42 of the fiber directing element 36, 38.