Filament winding method, filament winding device and filament winding machine

Abstract

The invention proceeds from a filament winding method, more particularly a glass fibre winding method, for filaments (10) with a strength of more than 68 tex, preferably for glass fibre direct rovings, with at least one filament capturing step (12), in which the more particularly freely hanging filament (10), which is provided, more particularly created, is captured by a filament capturing unit (56) which exerts at least one tensile force (66) on the filament (10) and conveys the filament (10) with a first conveying speed, and with at least one filament winding step (50), in which the filament (10) to be wound is initially wound onto a winding coil unit (14). It is proposed that in the filament winding step (50), the filament (10) already captured by the filament capturing unit (56) is brought into contact with the rotating winding coil unit (14) upstream of the filament and therefore as a result of the rotation of the winding coil unit (14) a second conveying speed is applied to the captured filament (10), wherein the first conveying speed and the second conveying speed are different.

Description

[0001] Filament winding process, filament winding device and filament winding machine

[0002] State of the art

[0003] The invention relates to a filament winding method according to the preamble of claim 1, a filament winding device according to the preamble of claim 15 and a filament winding machine according to claim 16.

[0004] Fiber optic winders are already known.

[0005] The object of the invention is, in particular, to provide a generic device with advantageous properties with regard to winding a new filament onto a winding spool unit for winding the filament. This object is achieved according to the invention by the features of patent claims 1, 15, and 16, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0006] Advantages of the invention

[0007] The invention is based on a filament winding method, in particular a glass fiber winding method, for filaments with a thickness of more than 68 tex, preferably for glass fiber direct rovings, with at least one filament capturing step in which the filament, in particular produced, in particular freely hanging, is captured by a filament capturing unit which generates at least one tensile force on the filament and conveys the filament at a first conveying speed, and with at least one filament winding step in which the filament to be wound is initially wound onto a winding spool unit.

[0008] It is proposed that in the filament winding step, the filament already captured by the filament capture unit is brought into contact, in particular initial contact, preferably touching contact, with the winding spool unit, which is rotating in particular before contact is established, in particular before the contact is established, so that the rotation of the winding spool unit exerts a second conveying speed on the captured filament, wherein the first conveying speed and the second conveying speed are different. The filament winding method according to the invention advantageously makes it possible to achieve optimized filament winding of a new filament onto a winding spool unit. Advantageously, a high degree of independence from the need for operator intervention can be achieved. Advantageously, a particularly high degree of automation can be achieved.In particular, the filament is formed as a glass fiber. In particular, the filament winding process is carried out directly after or in temporal connection with the production of the filaments, in particular glass fibers. It may happen that the filaments to be wound up, in particular glass fibers, are still moist during winding and / or during the filament winding step. In particular, in the filament winding step, the filament contacts the filament capture unit and the winding spool unit at least temporarily at the same time. In particular, in the filament winding step, the initially freely hanging, just-produced filament is taken up by a winding spool unit, which is initially free of filament windings, in particular in such a way that after the filament winding step, the just-produced filament is wound directly onto the winding spool unit by a filament production device arranged above the winding spool unit.In particular, the filament winding method is intended for filaments with a thickness of more than 68 tex, preferably more than 300 tex, but an application of the filament winding method according to the invention for filaments with a thickness of less than 68 tex or less than 300 tex is not excluded or also possible.

[0009] In particular, the winding spool unit is rotatable, preferably rotationally driven, for example by a drive unit. It is conceivable for the winding spool unit to be part of a filament winding device having multiple winding spool units. Preferably, a conveying speed, rotational speed, rpm, and / or outer peripheral speed of the winding spool unit is adjustable. In particular, the conveying speed, rotational speed, rpm, and / or outer peripheral speed of the winding spool unit is adjustable separately from the other winding spool units. In particular, the conveying speed, rotational speed, rpm, and / or outer peripheral speed of the winding spool unit is adjustable separately from a conveying speed, rotational speed, rpm, and / or outer peripheral speed of the filament capture unit.For example, the rotation speed of the winding spool unit and / or the filament capture unit can be individually reduced or increased, preferably braked or accelerated.

[0010] The winding spool unit is preferably cylindrical. It is conceivable that several separate, for example two, filament winding packages are produced per winding spool unit. In this case, the several filament winding packages are arranged next to one another on the winding spool unit in the axial direction of the winding spool unit. In particular, the two winding spool units are designed significantly differently from the filament capture unit. It is conceivable that the filaments are wound directly onto a surface of the winding spool unit, but preferably a winding sleeve is applied, e.g. plugged, to the winding spool unit for each filament winding package, onto which winding sleeve the respective filament is then wound. The filament capture unit is preferably free of winding sleeves. In particular, the filament is fed to the winding spool unit and / or the filament capture unit via a filament feed device.The filament has a thickness of more than 68 tex, in particular more than 300 tex, preferably more than 900 tex. The filament is preferably designed as a direct roving, which in particular has a thickness of 900 tex to 10,000 tex. A "tex" should be understood in particular to mean a weight in grams per 10,000 m of filament. In particular, such filaments, in particular direct rovings, are not suitable for direct winding onto a winding spool unit, as may be the case with the so-called spinning cake process. This only works in particular with filaments with thicknesses below 68 tex. "Intended" and / or "equipped" should be understood in particular to mean specially programmed, designed and / or equipped.The fact that an object is intended for a specific function should be understood in particular to mean that the object fulfils and / or executes this specific function in at least one application and / or operating state.

[0011] For example, the provided filament is produced by a filament production device in a so-called drawing tower. However, other production methods are also conceivable. In this case, a starting material is melted until at least one drop, in particular a glass drop, is formed, which is pulled vertically downwards by gravity and thereby pulls a thin fiber (the filament) along with it. In particular, the drop and / or the drawn fiber is clamped by the filament capture unit during capture. In particular, the filament capture unit pulls on the drawn fiber. The diameter of the filament is preferably determined by the respective effective conveying speed of the filament capture unit (initially) and / or the winding spool unit (later).In particular, the tensile force generated by the filament capture unit acts parallel to a direction of gravity, which preferably also runs parallel to a longitudinal extent of the provided filament. In particular, the term "filament upstream" should be understood to mean towards a point of origin of the filament, preferably towards a filament production source. Alternatively, bringing the filament into contact with the winding spool unit downstream of the filament capture unit is also conceivable. In this case, the speed ratio of the conveying speeds might have to be reversed. In particular, in the filament winding step, a newly produced filament is wound onto a winding spool unit for the first time. In particular, the rotating winding spool unit at least partially pulls the filament along with the rotational movement of the winding spool unit after contact has been established.In particular, the first conveying speed and the second conveying speed differ by at least 1%, preferably by at least 2%. Larger conveying speed differences, e.g. more than 10%, more than 20% or more than 30% are of course also conceivable. In particular, the first conveying speed and / or the second conveying speed can be at least substantially identical to an, in particular radial, outer circumferential speed of the respective winding spool unit or filament capture unit. In particular, an “outer circumferential speed”, preferably a “radial outer circumferential speed”, is to be understood as a movement speed and / or an angular velocity of a point which is on a radial outer surface of the respective radially outermost element of the winding spool unit or the filament capture unit which comes into contact with the filament.In particular, the winding spool unit comprises at least one winding spool holder and / or at least one winding core holder, or is preferably designed as such. In particular, the winding spool unit is designed as a winding mandrel. In particular, the filament capture unit forms a filament pulling unit.

[0012] It is further proposed that the second conveying speed be greater than the first conveying speed. This advantageously allows for a simple, fast, and / or operator-independent filament transfer from the filament capture unit to the winding spool unit. This advantageously allows for a reduction in filament tension in the area between the winding spool unit and the filament capture unit and / or an extension of the filament in the area between the winding spool unit and the filament capture unit.

[0013] Furthermore, it is proposed that a ratio of the conveying speeds be selected such that, when the filament is brought into contact with the winding spool unit, the filament tension between the winding spool unit and the filament capture unit is reduced. This advantageously allows for simple, fast, and / or operator-independent filament winding. This advantageously promotes the formation of a loop, which can be captured and / or clamped by a supplied portion of the filament, so that winding onto the winding spool unit begins automatically.In particular, by reducing the filament tension in the area between the winding spool unit and the filament capture unit, sagging or excess length of the filament is generated in the area between the winding spool unit and the filament capture unit, thereby enabling the filament to be carried along by the winding spool unit over an outer peripheral portion of the winding spool unit of more than 180°.In particular, by reducing the filament tension in the region between the winding spool unit and the filament capture unit, a total length of a section of the filament that is not in contact with the winding spool unit and at the same time is arranged in the region between the winding spool unit and the filament capture unit increases to a value that is greater than a shortest distance between the winding spool unit and the filament capture unit, in particular between the respective filament contact points of the winding spool unit and the filament capture unit at which the filament lifts off from the winding spool unit or the filament capture unit.If the ratio of the second conveying speed to the first conveying speed is at least 1.01, preferably at least 1.02, and preferably at least 1.03, optimal filament tension reduction and / or optimal filament elongation in the region between the winding spool unit and the filament capture unit can advantageously be achieved. Larger ratios, e.g., more than 1.1, more than 1.2, or more than 1.3, are of course also conceivable. In principle, in certain cases, a ratio of >1 but <1.01 could be sufficient to achieve the advantageous effect (loop).

[0014] Furthermore, if the ratio of the second conveying speed to the first conveying speed is at most 5, preferably at most 4, and preferably at most 3.5, an optimal filament tension reduction and / or an optimal filament elongation can advantageously be achieved in the region between the winding spool unit and the filament capture unit. Particularly preferably, the ratio of the conveying speeds during the transfer of the filament from the filament capture unit to the winding spool unit is at most 1.3. In particular, to generate the conveying speed ratio, the winding spool unit is accelerated relative to the free filament capture unit, or vice versa.

[0015] Furthermore, a ratio of the second conveying speed and the first conveying speed is selected such that the filament forms a loop through the contact and rotational movement of the winding spool unit, the arc of which points towards an inlet point of the winding spool unit, at which the incoming filament / the filament provided by the filament generation device meets the winding spool unit. This advantageously makes it possible to achieve simple, fast, and / or operator-independent filament winding. This advantageously enables the filament to be caught and / or clamped on the winding spool unit, in particular by the incoming filament / filament provided by the filament generation device, so that the winding of the filament onto the winding spool unit begins automatically.In particular, the loop is designed as an open loop whose open side is oriented at least substantially away from the incoming filament. In particular, the loop is initially oriented vertically relative to a surface of the winding spool unit. As the loop grows larger, it preferably falls over and then rests as a flat arch on the winding spool unit or on a winding core mounted on the winding spool unit. This allows the loop to be captured by the incoming thread particularly easily and / or reliably, especially since it does not end up lying to the right or left of the incoming thread.

[0016] Additionally, it is proposed that the formation of the loop be assisted by a blowing device and / or a spraying device. This advantageously allows a high degree of reliability in filament winding to be achieved. The catching and / or clamping of the loop by the incoming filament or filament provided by the filament generation device can advantageously be accelerated. In particular, the blowing device is provided for discharging a gaseous medium, such as blown air or another gaseous blowing medium, e.g., nitrogen. In particular, the spraying device is provided for discharging a liquid medium, such as water or another liquid spray medium.For example, it is conceivable that the spray device is provided for dispensing an adhesive, which is intended in particular to strengthen the adhesion of the filament to the winding spool unit through adhesion, or a liquid nitrogen, which is intended in particular to strengthen the adhesion of the filament to the winding spool unit through freezing. In particular, the blowing device and / or the spray device is aligned such that a discharge direction of the blowing medium and / or the spray medium points at least substantially towards the open side of the loop and / or points into the loop. In particular, a blowing direction / spraying direction of the blowing device / spraying device points in the direction of the inlet point of the winding spool unit, at which the incoming filament / provided by the filament production device strikes the winding spool unit.In particular, the blowing device / spraying device is arranged on a side of the filament opposite the side of the filament on which the inlet point of the winding spool unit is located. In particular, the blowing device and / or the spraying device supports the formation of the loop by moving the tension-reduced filament towards a surface of the free winding spool unit. In particular, the blowing device and / or the spraying device supports the formation of the loop by moving a portion of the tension-reduced filament more strongly in the direction of the incoming filament / filament provided by the filament generation device than the adjoining portions of the filament, which in particular creates a concave curvature of the filament as seen from the blowing device and / or the spraying device.In particular, the blowing device and / or the spraying device supports the formation of the loop by enlarging an initially formed loop through the blowing and / or spraying. In particular, the blowing device and / or the spraying device supports the formation of the loop by accelerating the formation of the loop through the blowing and / or spraying.

[0017] It is further proposed that the formation of the loop be supported by a selection of a winding surface material and / or a topographical winding surface quality of a winding surface of the winding spool unit, a winding surface of a winding sleeve placed on the winding spool unit, or a catching surface of the winding spool unit, in particular a catching ring, arranged laterally next to the winding surface of the winding spool unit or the winding sleeve. This advantageously allows a high degree of reliability in filament winding (high "catch rates") to be achieved. The catching and / or clamping of the loop by the incoming filament / filament provided by the filament production device can advantageously be accelerated.In particular, a material with good adhesion properties for glass fibers, such as aluminum, hard-anodized aluminum, stainless steel, coated stainless steel, plastic, or leather, is selected as the winding surface material. In particular, a surface finish with increased friction with glass fibers, such as the surface of a woven fiberglass tape, the surface of a hook-and-loop fastener, the surface of sandpaper, a grooved surface, or an extremely smoothly polished surface, is selected as the topographical winding surface finish. In particular, the winding core is designed as a hollow cylinder. In particular, the winding core is intended to support the filament and prepare it for subsequent processing.In particular, the catching surface is intended to provide a surface with increased friction and / or adhesion for the filament, preferably compared to a surface of the already wound filament, so that a filament contacting the catching surface is at least partially entrained by a rotational movement of the catching surface. In particular, the catching surface can also have the previously described winding surface materials and / or topographical winding surface properties. Preferably, the catching surface is arranged between two adjacent winding sleeves placed on the winding spool unit. In particular, the catching surface separates two winding sleeves arranged axially next to one another on a winding spool unit. In this case, in particular, the winding spool unit has a catching ring which runs around a circumference of the winding spool unit and provides the catching surface.

[0018] If the loop extends so far toward the inlet point that the loop falls beneath the incoming filament and is preferably clamped by the incoming filament or by the filament provided by the filament production device, a high degree of reliability in filament winding (high "catch rates") can advantageously be achieved. In particular, the loop initially expands in an upright orientation toward the incoming filament and then tilts over such that it rests as a flat arc on a winding area of ​​the winding spool unit or a winding core mounted on the winding spool unit, so that subsequent windings of the filament run over the tilted arc and clamp it.In particular, the loop is clamped by the incoming filament / the filament provided by the filament generation device in such a way that the loop is and remains clamped even under filament windings subsequently formed on the winding spool unit. In particular, the loop is clamped by the incoming filament in such a way that the rotation of the winding spool unit on which the loop is clamped creates a tension on the part of the filament arranged in an intermediate region between the winding spool unit and the filament capture unit. In particular, the loop is clamped by the incoming filament in such a way that the winding spool unit and the filament capture unit exert a tension acting in opposite directions on the part of the filament arranged between the winding spool unit and the filament capture unit.

[0019] It is also proposed that in at least one filament separation step following the filament winding step, the wound filament is separated, preferably torn or cut, in the intermediate region between the winding spool unit and the filament capture unit, in particular due to different tensile directions on the filament in the intermediate region between the winding spool unit and the filament capture unit. This advantageously makes it possible to achieve a particularly simple, effective and / or low-maintenance separation of the filament after successful winding. Preferably, the tearing occurs exclusively due to the tensile forces on the filament in the intermediate region generated by the rotation of the winding spool unit and by the rotation of the filament capture unit. Alternatively, however, it is also conceivable for the separation step to be assisted by tearing edges or cutting devices, in particular arranged in the intermediate region.The cutting device could be designed for passive cutting (the cutters / blades remain stationary during the filament separation step) or active cutting (the cutters / blades are moved during the filament separation step) of the filament in the intermediate region. In particular, cutting and / or tearing of the filament in the intermediate region only occurs when the loop has already been successfully clamped under the incoming filament / the filament provided by the filament production device, and thus, in particular, the filament has already been wound onto the winding spool unit (the filament winding step).

[0020] It is further proposed that, in the filament winding step, when the filament is brought into contact with the winding spool unit, an incoming portion of the filament and / or a portion of the filament extending between the winding spool unit and the filament capture unit is deflected in the direction of the winding spool unit by a pivotably and / or displaceably mounted deflecting and / or pressing element. This advantageously makes it possible to achieve a high level of reliability in the filament winding (high "capture rates"). The capturing and / or clamping of the loop by the incoming filament / the filament provided by the filament production device can advantageously be accelerated. In particular, the deflecting and / or pressing element enlarges a portion of the circumference of the winding spool unit that is in contact with the incoming filament.Preferably, the deflecting and / or pressing element is provided to deflect the filament in such a way that at least 180°, preferably at least 190°, of a total circumference of the winding spool unit is in contact with the filament. Smaller or larger wraps of the winding spool unit generated by the deflecting and / or pressing element, in particular larger wraps of the winding spool unit compared to a design without a deflecting and / or pressing element, are of course also conceivable. This can advantageously increase friction and / or adhesion of the filament to the winding spool unit, so that in particular the entrainment of the filament with the rotational movement of the winding spool unit and / or the formation of the loop and / or the clamping of the loop under the incoming filament can be facilitated / achieved / improved. The deflecting and / or pressing element can be designed as a rotatable element, e.g.as a deflection roller, or as a fixed (non-rotatable) element, e.g. as a deflection rod or a deflection mat. If designed as a fixed element, the filament sweeps over a surface of the deflection and / or pressure element. If designed as a rotatable element, the deflection and / or pressure element rotates at least partially with a movement of the incoming filament. In particular, the deflection and / or pressure element designed as a deflection and / or pressure roller is free of its own rotational drive. In particular, a rotational axis of the deflection and / or pressure element designed as a deflection and / or pressure roller is aligned at least substantially parallel to a rotational axis of the winding spool unit.In particular, the deflection and / or pressing element is mounted on a translation and / or pivoting device, by means of which the deflection and / or pressing element can be introduced at least temporarily into the intermediate region between the winding spool unit and the filament capture unit. In particular, the translation and / or pivoting device comprises at least one at least pivotable and / or at least translatable support arm on which the deflection and / or pressing element is mounted.

[0021] It is additionally proposed that in the filament winding step, when the filament is brought into contact with the winding spool unit, a portion of the filament extending between the winding spool unit and the filament capture unit is pressed against the winding spool unit by a pivotably and / or displaceably mounted deflecting and / or pressing element. This advantageously makes it possible to achieve a high level of reliability in the filament winding (high "capture rates"). Advantageously, the adhesion of the filament to the winding spool unit or the friction of the filament with the winding spool unit can be increased. This advantageously makes it possible to carry out the filament winding step with a particularly large number of winding cores made of different materials, in particular with so-called "low-friction winding cores" which, for example, have a surface made of a polytetrafluoroethylene material.This can advantageously be achieved by determining the second conveying speed of the filament by the outer circumferential speed and / or the rotational speed of the winding spool unit. In particular, the speed of the incoming thread is initially determined by the filament catching unit until the winding spool unit is in sufficient contact with the incoming filament / the filament provided by the filament production device upstream of the filament catching unit, so that the winding spool unit takes over the determination of the infeed speed. In particular, the deflection and / or pressure element, in particular the deflection and / or pressure roller, is resiliently mounted in such a way that a longitudinal axis, in particular a rotational axis, of the deflection and / or pressure element is movable in the radial direction of the winding spool unit. This can advantageously prevent an undesirable effect, such asNoise generation or contact loss due to an unevenness in a winding spool surface, in a winding core surface, e.g., due to a seam or edge, such as an injection-molded burr, can be reduced. In particular, after the filament separation step has been performed, the deflection and / or pressing element is removed from the winding spool unit. In particular, after the filament separation step has been performed, the deflection and / or pressing element is removed from the intermediate area between the winding spool unit and the filament capture unit.

[0022] It is also proposed that, in the filament capture step, the filament, which is provided in a freely suspended position, be deflected toward the filament capture unit by a pivotably and / or displaceably mounted deflection element for capturing the filament by the filament capture unit. This advantageously allows a high success rate of the filament capture step to be achieved. A high level of reliability in capturing the filament, which was initially provided in a freely suspended position, can be advantageously achieved. In particular, the provided filament is deflected by the deflection element in such a way that it comes into contact with the filament capture unit, in particular with driven rotating filament capture rollers of the filament capture unit.In particular, the provided filament is deflected by the deflection element in such a way that it is guided into a space between two filament capture rollers of the filament capture unit, which rotate about mutually parallel rotation axes. The filament capture rollers can be arranged relative to one another in such a way that grooves arranged on the outer surfaces of the filament capture rollers engage with each other in a gear-like manner (but not in contact) as the filament capture rollers rotate.

[0023] Furthermore, it is proposed that, in at least one filament threading step following the filament winding step, and in particular a filament separation step of the filament winding method, the filament wound onto the winding spool unit is threaded into a filament axial guide unit, which forces a reciprocating movement of the incoming filament along an axial direction of the winding spool unit. This advantageously allows for a uniform winding of the successfully wound filament onto the winding spool unit. It is conceivable that the filament axial guide unit threads at least two filaments wound simultaneously onto a single winding spool unit.

[0024] Furthermore, a filament winding device, in particular a glass fiber winding device, for filaments with a thickness of more than 68 tex, preferably of glass fiber direct rovings, in particular for carrying out the filament winding method, with at least one filament capture unit, which is designed to capture the filament, in particular freely suspended, provided, in particular produced, to generate at least one tensile force on the filament and to convey the filament at a first conveying speed, with the rotatable winding spool unit, which is designed to initially wind the captured filament, and with a deflection and / or pressing element, which is provided to bring the filament already captured by the filament capture unit into contact with the rotatable winding spool unit upstream of the filament,so that upon rotation of the winding spool unit, a second conveying speed can be exerted on the captured filament, wherein the first conveying speed and the second conveying speed are different. The filament winding device according to the invention advantageously allows for optimized filament winding of a new filament onto a winding spool unit. Advantageously, a high degree of independence from the need for operator intervention can be achieved. Advantageously, a particularly high degree of automation can be achieved.

[0025] In addition, a filament winding machine, in particular a glass fiber winding machine, with at least one of the filament winding devices is proposed, in particular implementing the advantages of the filament winding device.

[0026] The filament winding method, the filament winding device, and the filament winding machine according to the invention are not intended to be limited to the application and embodiment described above. In particular, the filament winding method, the filament winding device, and the filament winding machine according to the invention may comprise a number of individual elements, components, and units that differs from the number stated herein in order to fulfill a function described herein.

[0027] Drawings

[0028] Further advantages are shown in the following drawing description.

[0029] An embodiment of the invention is shown in the drawings.

[0030] The drawings, the description, and the claims contain numerous features in combination. A person skilled in the art will also conveniently consider the features individually and combine them into further meaningful combinations.

[0031] They show:

[0032] Fig. 1 is a schematic perspective view of a filament winding device of a filament winding machine in a first operating position of a filament winding process,

[0033] Fig. 2 shows the filament winding device in a second operating position of the filament winding process,

[0034] Fig. 3 shows the filament winding device in a third operating position of the filament winding process,

[0035] Fig. 4 shows the filament winding device in a fourth operating position of the filament winding process,

[0036] Fig. 5 shows the filament winding device in a fifth operating position of the filament winding process,

[0037] Fig. 6 shows the filament winding device in a sixth operating position of the filament winding process,

[0038] Fig. 7 shows the filament winding device in a seventh operating position of the filament winding process and

[0039] Fig. 8 is a schematic flow diagram of the filament winding process.

[0040] Description of the embodiments

[0041] Figure 1 schematically shows part of a filament winding machine 58. The filament winding machine 58 is designed as a glass fiber winding machine. The filament winding machine 58 has one or more filament winding devices 54. The filament winding device 54 of the filament winding machine 58 is shown as an example in Figure 1.

[0042] The filament winding device 54 is designed as a glass fiber winding device. The filament winding device 54 is provided for winding filaments 10. The filaments 10 are designed, for example, as glass fibers. The filaments 10 are designed as glass fiber direct rovings. In the example shown, two filaments 10 are provided simultaneously by a filament production device (not shown). The filaments 10 are provided freely hanging. The filament winding device 54 is provided for producing wound filament winding packages. The glass fiber winding device is provided for producing wound glass fiber winding packages. The filament winding device 54 is intended for filaments 10 with a thickness of more than 68 tex. The filament winding device 54 is optimized for winding and transferring glass fibers with a thickness between 900 tex and 10,000 tex.The filament winding device 54 is intended to carry out a filament winding method shown in the figures.

[0043] The filament winding device 54 has a winding spool unit 14. The winding spool unit 14 is rotatably mounted about a rotation axis 60 running parallel to a longitudinal axis of the winding spool unit 14. The filament winding device 54 has a further winding spool unit 24. The further winding spool unit 24 is rotatably mounted about a rotation axis 62 running parallel to a longitudinal axis of the further winding spool unit 24. The winding spool units 14, 24 are provided for winding the filament 10 by rotation about their rotation axes 60, 62. In the case shown, two winding sleeves 32 are applied to the winding spool unit 14, for example. The winding sleeves 32 are designed as hollow cylinders that can be plugged onto the winding spool units 14, 24. The winding sleeves 32 each have a winding surface 30.The winding surfaces 30 of the winding sleeves 32 are formed from a winding surface material that supports the carrying along of a filament 10 coming into contact with the winding surface 30. For example, the winding surface material of the winding sleeve 32 in Fig. 1 is cardboard. Alternative winding surface materials for winding sleeves 32 are conceivable. The winding sleeves 32 can alternatively or additionally each have a special topographical winding surface quality of the winding surface 30. The topographical winding surface quality of the winding surface 30 of the winding sleeves 32 is designed in such a way that the carrying along of a filament 10 coming into contact with the winding surface 30 is supported. For example, the winding surface 30 of the winding sleeve 32 in Fig. 1 has a topographical winding surface quality that is characterized by a particular roughness.Alternative topographical winding surface properties of winding cores 32 are conceivable.

[0044] The winding spool unit 14 optionally has a catch ring 68. Configurations of the winding spool unit 14 without a catch ring 68 are also conceivable. The catch ring 68 is arranged approximately halfway along the axial length of the winding spool unit 14. The catch ring 68 surrounds the entire circumference of the winding spool unit 14. A winding sleeve 32 is arranged on either side of the catch ring 68 in the axial direction 26 of the winding spool unit 14. The catch ring 68 is arranged laterally next to the winding surface 30 of the winding sleeve 32. The catch ring 68 is provided to exert significantly increased friction or adhesion with the filament 10 compared to a surface of a filament winding package wound onto a winding spool unit 14, 24. For this purpose, the catch ring 68 has a catch surface 34. The capture surface 34 of the capture ring 68 is formed from a winding surface material which supports the carrying of a filament 10 coming into contact with the capture surface 34.For example, the winding surface material of the catch ring 68 in Fig. 1 is aluminum. Alternative winding surface materials for catch rings 68 are conceivable. The catch rings 68 can alternatively or additionally each have a special topographical winding surface texture of the catch surface 34. The topographical winding surface texture of the catch surface 34 of the catch ring 68 is designed such that the entrainment of a filament 10 coming into contact with the catch surface 34 is supported. For example, the catch surface 34 of the catch ring 68 in Fig. 1 has a topographical winding surface texture that is characterized by particularly pronounced smoothness. Alternative topographical winding surface textures of catch rings 68 are conceivable. The filament winding device 54 has a rotary table 48. The rotary table 48 is mounted for rotation about a central rotation axis 64.The winding coil units 14, 24 are arranged eccentrically on the turntable 48.

[0045] The filament winding device 54 has a filament capture unit 56. The filament capture unit 56 is configured to capture the provided filament 10. The filament capture unit 56 is configured to generate a tensile force 66 on the captured filament 10. The filament capture unit 56 is configured to convey the filament 10 at a first conveying speed. The filament capture unit 56 comprises two filament capture rollers 44, 52 for each filament 10 to be captured. The filament capture rollers 44, 52 are rotatable in opposite directions 70, 74. The filament capture rollers 44, 52 have groove-like furrows 76 on their outer circumference. The grooves 76 extend parallel to rotation axes 78, 80 of the filament capture rollers 44, 52. On a side facing the suspended filament 10, the filament capture rollers 44, 52 each have a capture slope 82.The capture slope 82 is designed as a conical inlet / as a chamfer of an end of the filament capture roller 44, 52 pointing in the direction of the filament 10. The rotatable winding spool unit 14 is configured to initially wind the filament 10, in particular captured by the filament capture unit 56. The winding spool unit 14 is configured to convey the initially wound filament 10 / a filament 10 coming into contact with the winding surface 30 at a second conveying speed.

[0046] The first conveying speed and the second conveying speed are different. The second conveying speed is greater than the first conveying speed. A ratio of the conveying speeds is selected such that when the filament 10 captured by the filament capturing unit 56 comes into contact with the winding spool unit M, a filament tension between the winding spool unit 14 and the filament capturing unit 56 is reduced. The ratio of the second conveying speed to the first conveying speed is at least 1.01, preferably at least 1.02, and more preferably at least 1.03. The ratio of the second conveying speed to the first conveying speed is at most 5, preferably at most 4, and more preferably at most 3.5.The ratio of the second conveying speed to the first conveying speed is selected such that the filament 10 forms a loop 18 through contact with the winding spool unit 14 and through the rotational movement of the winding spool unit 14 (see also Fig. 5). The loop 18 forms an arc 20. The arc 20 of the loop 18 points toward an inlet point 22 of the winding spool unit 14 (see also Fig. 5). At the inlet point 22, the filament 10 provided by a filament production device (not shown) strikes the winding spool unit 14.

[0047] The filament winding device 54 has a deflection and / or pressing element 46. The deflection and / or pressing element 46 is provided to bring the filament 10, already captured by the filament capture unit 56, into contact with the rotatable winding spool unit 14 in an upward filament direction. By bringing the filament 10 into contact with the winding spool unit 14, the second conveying speed can be applied to the captured filament 10 during the rotation of the winding spool unit 14. The deflection and / or pressing element 46 is provided to deflect the portion of the filament 10 extending between the winding spool unit 14 and the filament capture unit 56 when the filament 10 is brought into contact with the winding spool unit 14.The deflecting and / or pressing element 46 is provided to press the portion of the filament 10 extending between the winding spool unit 14 and the filament capture unit 56 against the winding spool unit 14 when the filament 10 is brought into contact with the winding spool unit 14. The deflecting and / or pressing element 46 is pivotally mounted. The deflecting and / or pressing element 46 has a pivot arm 86. The deflecting and / or pressing element 46 has an encircling recess 88. The encircling recess 88 is provided to encircle an outer circumference of the winding spool unit 14 by at least 120°, preferably by approximately 180°. The filament winding device 54 has a deflecting element 84. The deflecting element 84 is formed separately from the deflecting and / or pressing element 46. Alternatively, the deflection element 84 can also be formed jointly or integrally with the deflection and / or pressure element 46. The deflection element 84 is pivotably mounted.The deflection element 84 has a cantilever 118. The cantilever 118 can be brought into contact with the filament 10 by pivoting the deflection element 84. The cantilever 118 moves the filament 10 toward or away from the filament capture unit 56 depending on a set pivot angle. The deflection element 84 is configured to deflect the suspended filament 10 toward the filament capture unit 56.

[0048] The filament winding device 54 has a filament axial guide unit 72. The filament axial guide unit 72 is provided to force a reciprocating movement of the incoming filament 10 along the axial direction 26 of the winding spool unit 14. The filament axial guide unit 72 is provided to produce flat filament winding layers on the winding spool unit 72. The filament axial guide unit 72 has a threading element 90. The threading element 90 is provided to laterally contact and / or thread the filament 10. The threading element 90 is provided to guide the filament 10 with a reciprocating movement of the threading element 90. The filament axial guide unit 72 has a linear guide rail 92. The threading element 90 can be moved back and forth along the linear guide rail 92.

[0049] The filament winding device 54 has a support device for supporting the formation of the loop 18, which is important for the filament winding process. The filament winding device 54 has a blowing device 28. The support device is formed by the blowing device 28. The blowing device 28 is provided for the directed output of a gas stream 94, preferably an air stream. Alternatively or in addition to the blowing device 28, the filament winding device 54 can have a spraying device. The spraying device can then be provided for the directed output of a liquid. The blowing device 28 and / or the spraying device is provided to support the formation of the loop 18, in particular to accelerate it and / or to increase its expansion in the direction of the inlet point 22. The blowing device 28 is provided to output a gas stream 94 directed in the direction of the inlet point 22.The blowing device 28 is provided for blowing the gas stream 94 into an opening of the loop 18. The blowing device 28 is provided for blowing the gas stream 94 onto an inner side of the bend 20 of the loop 18. The alternative or additional spraying device can have the same task and / or an additional task of applying an adhesion-promoting liquid to the winding spool unit 14. The deflecting and / or pressing element 46 can be formed in a common component with the blowing device 28 and / or with the spraying device, as shown by way of example in the figures. Alternatively, however, the deflecting and / or pressing element 46 can also be formed as a separate component.

[0050] Figures 1 to 7 schematically show the filament winding device 54 at different stages of the filament winding process. Figure 1 shows the situation in which the filament 10 is provided in a hanging position. Figure 2 shows the situation in which the deflection element 84 is pivoted such that the filament 10 is pushed between the filament capture rollers 44, 52 of the filament capture unit 56. Figure 3 shows the situation in which the deflection and / or pressing element 46 deflects the filament 10 in an intermediate region 42 between the winding spool unit 14 and the filament capture unit 56 in the direction of the winding spool unit 14. Figure 4 shows the situation in which the deflection and / or pressing element 46 presses the filament 10 against the winding spool unit 14. Fig. 5 shows the situation in which the loop 18 is formed. The formation of the loop 18 can be assisted by the blowing device 28. Fig.Fig. 6 shows the situation in which the loop 18 is already caught and clamped by the incoming part of the filament 10. This creates a pull in the intermediate region 42 in a pulling direction 38 pointing toward the winding spool unit 14 (see Fig. 5), while the filament capture unit 56 pulls in a pulling direction 40 opposite the pulling direction 38. The pulling forces in the opposite pulling directions 38, 40 are continually increased by the winding of the filament 10 onto the winding spool unit 14 until the part of the filament 10 arranged in the intermediate region 42 breaks. Fig. 7 shows the situation in which the filament 10 is separated from the filament capture unit 56 and only the winding spool unit 14 is wound with the filament 10. When the winding spool unit 14 is wound with the filament 10, the filament axial guide unit 72 moves the filament 10 in an oscillating manner along the axial direction 26 of the winding spool unit 14.The deflection and / or pressing element 46 and the deflection element 84 are each pivoted back into their initial positions / rest positions.

[0051] Fig. 8 shows a schematic flow diagram of the filament winding process for filaments 10 with a thickness of more than 68 tex. The filament winding process forms a glass fiber winding process for glass fibers, in particular for glass fiber direct rovings. In at least one filament production step 96, which in particular is not part of the filament winding process, the filament 10 is produced from a preform. In at least one provision step 98, the produced filament 10 is provided, in particular freely hanging (cf. Fig. 1). In at least one filament capture step 12, the provided filament 10 is captured by the filament capture unit 56. For this purpose, the filament 10 is deflected by pivoting the deflection element 84 in the direction of the filament capture unit 56, in particular in the direction of a capture space of the filament capture unit 56 located between the filament capture rollers 44, 52 (see Fig. 2).The filament capture unit 56, in particular the rotated filament capture rollers 44, 52, generate a tensile force 66 on the filament 10. The filament capture unit 56, in particular the rotated filament capture rollers 44, 52, convey the filament 10 at the first conveying speed.

[0052] In at least one filament winding step 50 following the filament capture step 12, the filament 10 to be wound / captured is initially wound onto the winding spool unit 14. For this purpose, in a first sub-step 100 of the filament winding step 50, the filament 10 already captured by the filament capture unit 56 is brought into contact with the rotating winding spool unit 14 in an upward filament direction. In at least one sub-step 108 of the filament winding step 50, in order to assist in bringing the filament 10 into contact with the winding spool unit 14, the incoming part of the filament 10 and / or the part of the filament 10 running between the winding spool unit 14 and the filament capture unit 56 is deflected in the direction of the winding spool unit 14 by the pivotably and / or displaceably mounted deflection and / or pressing element 46.In at least one further sub-step 110 of the filament winding step 50, in order to support the conveyance of the filament 10 with the winding spool unit 14 at the second conveying speed, the part of the filament 10 running between the winding spool unit 14 and the filament capture unit 56 is pressed against the winding spool unit 14 by the pivotably and / or displaceably mounted deflection and / or pressing element 46.

[0053] By bringing the filament 10 into contact with the rotating winding spool unit 14, the second conveying speed is exerted on the captured filament 10 at the contact point of the filament 10 with the winding spool unit 14 due to the rotation of the winding spool unit 14. The first conveying speed and the second conveying speed are different. Due to the contact of the filament 10 with the winding spool unit 14, the filament 10 is at least partially carried along with the rotational movement of the winding spool unit 14. The ratio of the second conveying speed and the first conveying speed is selected in sub-step 100 such that the filament 10 forms the loop 18 due to the contact and the rotational movement of the winding spool unit 14, the bend 20 of which points in the direction of the inlet point 22 of the winding spool unit 14.In at least one further sub-step 102 of the filament winding step 50, the formation of the loop 18 is assisted by the blowing device 28 and / or by the spraying device. In at least one further sub-step 104 of the filament winding step 50, the formation of the loop 18 is assisted by the selection of a winding surface material and / or the topographical winding surface properties of the winding surface 30 of the winding spool unit 14. In at least one further sub-step 106 of the filament winding step 50, the loop 18 is enlarged in the direction of the inlet point 22 until the loop 18 falls below the incoming filament 10. In at least one further sub-step 108 of the filament winding step 50, the loop 18 is clamped by the incoming filament 10.

[0054] In at least one filament cutting step 36 following the filament winding step 50, the clamped and / or wound filament 10 is severed in the intermediate region 42 between the winding spool unit 14 and the filament capture unit 56 due to different pulling directions 38, 40 on the filament 10. In the filament cutting step 36, the filament 10 is preferably torn. However, active cutting assistance can also be provided. In at least one filament threading step 16 following the filament winding step 50 and the filament cutting step 36, the filament 10 wound onto the winding spool unit 14 is threaded into the filament axial guide unit 72. In at least one further method step 112, the filament 10 is wound onto the winding spool unit 14 to form a filament winding package.In at least one further method step 116, a further filament winding process is performed, which includes a filament transfer step 114 in which the filament 10 to be wound is transferred from the winding spool unit 14 to the further winding spool unit 24 or vice versa. The further filament winding process is described in detail in a German patent application with application number 10 2022 131 742.0.

[0055] Reference symbol

[0056] 10 filaments

[0057] 12 Filament capture step

[0058] 14 Winding spool unit

[0059] 16 Filament threading step

[0060] 18 loops

[0061] 20 sheets

[0062] 22 Entry point

[0063] 24 Additional winding coil unit

[0064] 26 Axial direction

[0065] 28 Blowing device

[0066] 30 winding surface

[0067] 32 winding core

[0068] 34 Catch surface

[0069] 36 Filament separation step

[0070] 38 Direction of travel

[0071] 40 Pull direction

[0072] 42 Intermediate area

[0073] 44 filament capture rollers

[0074] 46 Deflection and / or pressure element

[0075] 48 turntables

[0076] 50 filament winding steps

[0077] 52 filament capture rollers

[0078] 54 Filament winding device

[0079] 56 Filament capture unit

[0080] 58 Filament winding machine

[0081] 60 rotation axis

[0082] 62 rotation axis

[0083] 64 rotation axis

[0084] 66 Tensile force catch ring

[0085] Direction

[0086] Filament axial guide unit

[0087] Direction

[0088] furrow

[0089] rotation axis

[0090] rotation axis

[0091] Capture slope

[0092] deflection element

[0093] Swivel arm

[0094] Recess for gripping

[0095] Threading element

[0096] Linear guide rail

[0097] Gas flow

[0098] Filament manufacturing step

[0099] Deployment step

[0100] Substep

[0101] Substep

[0102] Substep

[0103] Substep

[0104] Substep

[0105] Substep

[0106] Process step

[0107] Filament transfer step

[0108] Process step

[0109] boom

Claims

Claims 1. Filament winding method, in particular glass fiber winding method, for filaments (10) with a thickness of more than 68 tex, preferably for glass fiber direct rovings, with at least one filament capturing step (12), in which the filament (10), in particular freely suspended, provided, in particular produced, is captured by a filament capturing unit (56) which generates at least one tensile force (66) on the filament (10) and conveys the filament (10) at a first conveying speed, and with at least one filament winding step (50), in which the filament (10) to be wound is initially wound onto a winding spool unit (14), characterized in that in the filament winding step (50), the filament (10) already captured by the filament capturing unit (56) is brought into contact with the rotating winding spool unit (14) upstream of the filament,such that the rotation of the winding spool unit (14) exerts a second conveying speed on the captured filament (10), the first conveying speed and the second conveying speed being different.

2. Filament winding method according to claim 1, characterized in that the second conveying speed is greater than the first conveying speed.

3. Filament winding method according to claim 1 or 2, characterized in that a ratio of the conveying speeds is selected such that when the filament (10) is brought into contact with the winding spool unit (14), a filament tension between the winding spool unit (14) and the filament capture unit (56) is reduced.

4. Filament winding method according to one of the preceding claims, characterized in that a ratio of the second conveying speed and the first conveying speed is at least 1.01, preferably at least 1.02 and preferably at least 1.

03.

5. Filament winding method according to claim 4, characterized in that a ratio of the second conveying speed and the first conveying speed is at most 5, preferably at most 4 and preferably at most 3.

5.

6. Filament winding method according to one of the preceding claims, characterized in that a ratio of the second conveying speed and the first conveying speed is selected such that the filament (10) forms a loop (18) through the contact and through the rotational movement of the winding spool unit (14), the arc (20) of which points in the direction of an inlet point (22) of the winding spool unit (14), at which the incoming filament (10) provided by a filament production device meets the winding spool unit (14).

7. Filament winding method according to claim 6, characterized in that the formation of the loop (18) is assisted by a blowing device (28) and / or by a spraying device.

8. Filament winding method according to claim 6 or 7, characterized in that the formation of the loop (18) is supported by a choice of a winding surface material and / or a topographical winding surface condition of a winding surface (30) of the winding spool unit (14), a winding surface of a winding sleeve (32) placed on the winding spool unit (14) or a catching surface (34) of the winding spool unit (14) arranged laterally next to the winding surface (30) of the winding spool unit (14) or the winding sleeve (32).

9. Filament winding method according to one of claims 6 to 8, characterized in that the loop (18) extends so far in the direction of the inlet point (22) that the loop (18) falls under the incoming filament (10) / the filament provided by the filament producing device and is preferably clamped by the incoming filament (10) / the filament provided by the filament producing device.

10. Filament winding method according to one of the preceding claims, in particular according to claim 9, characterized in that in at least one filament separating step (36) following the filament winding step (50), the wound filament (10) is separated, preferably torn or cut, in the intermediate region (42), in particular due to different pulling directions (38, 40) on the filament (10) in an intermediate region (42) between the winding spool unit (14) and the filament capture unit (56).

11. Filament winding method according to one of the preceding claims, characterized in that in the filament winding step (50), when bringing the filament (10) into contact with the winding spool unit (14), an incoming part of the filament (10) and / or a part of the filament (10) running between the winding spool unit (14) and the filament capture unit (56) is deflected in the direction of the winding spool unit (14) by a pivotably and / or displaceably mounted deflection and / or pressing element (46).

12. Filament winding method according to one of the preceding claims, in particular according to claim 11, characterized in that in the filament winding step (50) when bringing the filament (10) into contact with the winding spool unit (14), a part of the filament (10) running between the winding spool unit (14) and the filament capture unit (56) is pressed against the winding spool unit (14) by a pivotably and / or displaceably mounted deflection and / or pressing element (46).

13. Filament winding method according to one of the preceding claims, characterized in that in the filament catching step (12) for the catching of the filament (10) by the filament catching unit (56), the filament (10), which is provided, in particular freely hanging, is deflected in the direction of the filament catching unit (56) by a pivotably and / or displaceably mounted deflection element (84).

14. Filament winding method according to one of the preceding claims, in particular according to claim 10, characterized in that in at least one filament threading step (16) following the filament winding step (50), and in particular a filament separating step (36) of the filament winding method, the filament (10) wound onto the winding spool unit (14) is threaded into a filament axial guide unit (72) which forces a back and forth movement of the incoming filament (10) along an axial direction (26) of the winding spool unit (14).

15. Filament winding device (54), in particular glass fiber winding device, for filaments (10) with a thickness of more than 68 tex, preferably of glass fiber direct rovings, in particular for carrying out a filament winding method according to one of the preceding claims, with at least one filament capture unit (56) which is designed to capture the filament (10) which is provided, in particular produced, in particular in a freely hanging manner, to generate at least one tensile force (66) on the filament (10) and to convey the filament (10) at a first conveying speed, and with at least one rotatable winding spool unit (14) which is designed to initially wind up the captured filament (10), characterized by a deflection and / or pressing element (46) which is provided to bring the filament (10) already captured by the filament capture unit (56) upstream into contact with the rotatable winding spool unit (14). bring,such that upon rotation of the winding spool unit (14), a second conveying speed can be exerted on the captured filament (10), wherein the first conveying speed and the second conveying speed are different.

16. Filament winding machine (58), in particular glass fiber winding machine, with at least one filament winding device (54) according to claim 15.

Images