WAVE WINDING DEVICE AND METHOD FOR PRODUCING A WAVE WINDING

Abstract

A wave winding device having a feed device and a winding device. The wave winding device has a wire entrainment device, which grasps a winding or a plurality of windings situated on the shaping core and entrains it or them in the transport direction. The wire entrainment device has a plurality of loose transport jaw members, each of which has a plurality of wire receiving grooves, a transport jaw placing device, which is situated in the area of the shaping core and places transport jaw members on the winding wire situated on the shaping core, and a transport jaw receiving device, which receives transport jaw members. The wire entrainment device further has a transport jaw entrainment device, which engages with the transport jaw members and moves these in transport direction.

Claims

1. A wave winding device (1), comprising: a feed device (2), which provides at least one winding wire (3) via at least one winding nozzle (7) and transports it in a feed direction (Y); a winding device (5, 4), which winds the fed winding wire (3) and comprises a shaping core, which is driven so as to rotate about a rotation axis (P1), and which extends in a transport direction (X), a wire entrainment device (8) for grasping a winding or a plurality of windings situated on the shaping core (4) and for entraining it or them in the transport direction, wherein the wire entrainment device (8) comprises: a plurality of loose transport jaw members (100), each of which has a plurality of wire receiving grooves (103); a transport jaw placing device (6), which is situated in the area of the shaping core (4) and is for placing the transport jaw members (100) on the winding wire (3) situated on the shaping core (4); a transport jaw receiving device (11) for receiving transport jaw members (100); and a transport jaw entrainment device (8.11, 8.21) for engaging with the transport jaw members (100) and for moving these in transport direction (X).

2. The wave winding device (1) according to claim 1, further comprising a transport jaw return device (10) for returning the transport jaw members (100) received by the transport jaw receiving device (11) to the transport jaw placing device (6).

3. The wave winding device (1) according to claim 1, wherein the transport jaw members (100) include linking sections for linking adjacent transport jaw members (100) to one another.

4. The wave winding device (1) according to claim 1, wherein the wire entrainment device (8) includes a transport jaw guide, in which the transport jaw members (100) may be guided in transport direction (X).

5. The wave winding device (1) according to claim 1, wherein of the plurality of transport jaw members (100), at least some transport jaw members (100) comprise groove spacings differing from other transport jaw members (100).

6. The wave winding device (1) according to claim 1, wherein the wire entrainment device (8) is rotatable in synchrony with the shaping core (4) about an axis parallel to the transport direction (X).

7. The wave winding device (1) according to claim 1, further comprising a pressing device (8.12, 8.22) advanceable in the direction of the wave winding (12) and movable in transport direction (X), the pressing device (8.12, 8.22 being situated downstream from the transport jaw entrainment device (8.11, 8.21) in transport direction (X).

8. The wave winding device (1) according to claim 1, wherein the transport jaw entrainment device (8.11, 8.21) is movable in transport direction (X) and advanceable perpendicular to the transport direction in the direction of the wave winding.

9. The wave winding device (1) according to claim 1, further comprising a stripping device (14.1, 14.2), which facilitates the release of the transport jaw members (100) from the wave winding (12).

10. The wave winding device (1) according to claim 1, further comprising a conveyor device (9) situated in transport direction (X) downstream from the wire entrainment device (8), wherein the conveyor device (9) takes the wave winding (12) from the wire entrainment device (8) and transports the wave winding (12) further.

11. The wave winding device (1) according to claim 10, wherein the conveyor device (9) comprises a toothed belt, the teeth of which entrain the wave winding (12).

12. A method for producing a wave winding by using a wave winding device (1), the method comprising: i) feeding a winding wire (3) to a winding device (4, 5) that includes a shaping core (4); ii) winding the wire (3) with the aid of the winding device (4, 5) by rotating the shaping core; iii) transporting the wire (3) situated on the shaping core (4) in a transport direction (X) parallel to the rotation axis (P1) of the shaping core (4); iv) placing at least one loose transport jaw member (100), which has a plurality of wire receiving grooves (103), on the shaping core (4) wound with the wire (3), so that at least one winding of the wire (3) is received in a wire receiving groove (103), and v) moving the transport jaw member (100) in transport direction (X).

13. The method according to claim 12, wherein steps iv) and v) are carried out repeatedly.

14. The method according to claim 12, further comprising rotating the shaping core (4) by 180 between steps iv) and v).

15. The method according to claim 14, wherein movement step v) is carried out in such a way that the placed transport jaw member (100) is moved by approximately half the length of the placed transport jaw member (100) in transport direction (X) before the shaping core (4) is rotated by 180.

16. The method according to claim 12, further comprising when placing a new transport jaw member, then new transport jaw member is linked with the transport jaw member (100), in each case, immediately preceding in transport direction (X).

17. The method according to claim 12, wherein in step iv), two transport jaw members (100) are placed on the shaping core spaced parallel apart from one another.

18. The method according to claim 12, wherein to carry out step iv), a transport jaw entrainment device (8.11, 8.21) moveable in transport direction (X) is advanced to a transport jaw member (100), engaged with the transport jaw member (100), subsequently fed forward and after being fed forward, released again from engagement with the transport jaw member.

19. The method according to claim 12, wherein the wave winding (12) is pressed together by means of a pressing device (8.12, 8.22) movable in synchrony with the forward feed movement of the transport jaw members (100) in transport direction (X).

20. The method according to claim 12, wherein a plurality of winding wires extending in parallel are fed to and wound on the shaping core (4), wherein the spacing of the winding wires (3) measured in transport direction (X) is reduced or is increased during the course of the production process of the winding mat (12) by changing the spacing of the winding wires (3) fed in parallel to the shaping core (4).

21. The method according to claim 20, further comprising using transport jaw members (100), of which at least some transport jaw members (100) have groove spacings differing from other transport jaw members (100).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The invention is explained in greater detail below with reference to FIGS. 1-6.

[0031] FIG. 1 shows a perspective schematic view of a wave winding device according to the invention,

[0032] FIG. 2 shows a sectional view along the transport direction X through a part of the wave winding device according to the invention in a first method step,

[0033] FIG. 3 shows a sectional view from FIG. 2 in a second method step,

[0034] FIG. 4 shows a sectional view from FIG. 2 in a third method step,

[0035] FIG. 5 shows a sectional view from FIG. 2 in a fourth method step, and

[0036] FIG. 6 schematically shows a process sequence, which illustrates the placement of the transport jaw members on the shaping core and the separation of the transport jaw members from the wave winding produced.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0037] In the schematic arrangement of the winding device 1 according to the invention depicted in FIG. 1, one, respectively, a plurality of wires 3 is fed via a feed device 2 in a feed direction Y via one, respectively, a plurality of winding nozzles 7 to a shaping core 4. The shaping core 4 is part of a winding device, for which a drive 5 for the shaping core 4 also serves. The shaping core 4 can be rotated with the drive 5 about an axis P1. The winding axis P1 extends preferably perpendicularly to the feed direction Y and parallel to the transport direction X. Transport direction device the direction X, because the winding created on the shaping core 4 is further transported in that direction. A wire entrainment device 8, which is designed to further transport the resulting waving winding in transport direction X, serves to transport the wave winding created on the shaping core 4. Provided adjacent to the wire entrainment device 8 is a conveyor device 9, which takes the winding wire created, or winding wire still being created and, if necessary, feeds it to the further destination.

[0038] A transport jaw placing device 6, with the aid of which transport jaw members (not shown in FIG. 1) are placed on the shaping core 4, is provided in the area of the shaping core 4, the main direction of longitudinal extension of which extends in the transport direction. These transport jaw members are subsequently grasped and entrained via the wire entrainment device 8 and for their part serve to grasp and entrain the wave winding. Accordingly, a transport jaw receiving device 11 is provided at the end of the wire entrainment device 8, at which point the transport jaw members placed by the transport jaw placing device 6 on the shaping core or on the wave winding are lifted again from the wave winding. The transport jaw members received by the transport jaw receiving device 11 may be immediately guided back to the transport jaw placing device 6 via an optional transport jaw return device 10.

[0039] The terms transport jaws and transport jaw members are used synonymously below.

[0040] Further details of the process between the transport jaw placing device 6 and the transport jaw receiving device 11 are now explained in greater detail with reference to FIGS. 2-6.

[0041] The transport jaw members and transport jaws are identified in the following figures by the reference numeral 100. FIG. 2 depicts how a transport jaw member 100 (left side of the figure) is placed on the shaping core 4. A plurality of windings spaced apart from one another, which together is identified by the reference numeral 12, is located on the shaping core 4. Thus, 12 identifies, as a whole, the wave winding or a winding mat formed from a plurality of wave windings. The winding wires resting on the shaping core 4 or the individual wires situated next to one another surround the shaping core 4. A transport jaw member 100 is then placed on the upper side of the generally flat shaping core 4 and simultaneously linked to the transport jaw members 100 preceding in the transport direction X. Engagement sections 105 on the front side of the transport jaw member 100, in particular, which are able to engage corresponding engaging receptacles of a preceding transport jaw member 100, are used for linking. Thus, the transport jaw member 100, as it is set on the shaping core 4, is linked to the preceding transport jaw member 100. The transport jaw member 4 further includes a number of wire receiving grooves on the side facing the shaping core 4. Each wire receiving groove is intended for one wire section on the shaping core 4, so that when setting the transport jaw member 100 on the shaping core 4, a part of the winding 12 is positioned in each of the wire receiving grooves, so that the individual windings are held spaced apart from one another in the transport direction X with the aid of the transport jaw member during the further transport process.

[0042] In FIG. 3, the transport jaw member is placed on the shaping core. The winding wire is then shifted on the shaping core in the transport direction, in order to bend the winding wire in the area of the winding heads of the wave winding to be formed. This shifting preferably always takes place via a forward feed of the transport jaw member, respectively, of the chain of transport jaw members 100 by half a length of a transport jaw member 100 in transport direction X. A transport jaw entrainment device 8.11, respectively, 8.21 is provided in the area of the wire entrainment device 8 for moving the chain of transport jaw members 100. The transport jaw entrainment device 8.11, respectively, 8.21 in the example, shown includes coupling members 8.211, 8.212, respectively, 8.111 or 8.112, designed as projections, which engage in corresponding engagement recesses, which may be holes, for example, if the projections are designed, for example, as pins. A plurality of coupling counter-sections designed as engagement recesses 101, 102 is advantageously situated on each transport jaw member 100 on the side opposite the wire receiving grooves, so that the respective transport jaw member does not tilt during entrainment by the transport jaw entrainment device 8.11, respectively, 8.21. The transport jaws are preferably also guided via a transport jaw guide 13 in the area of the wire entrainment device 8.

[0043] The transport jaw entrainment device 8.11, respectively, 8.21 is preferably mounted on a carriage 8.1, respectively, 8.2 so as to move along the transport direction X and may be advanced in or to the transport jaw members 100 resting on the wave winding in a direction perpendicular to the transport direction X relative to wave winding 12. For continuous transport, the transport jaw entrainment device is initially advanced to the transport jaws, wherein the coupling elements 8.211, 8.212, respectively, 8.111, 8.112 engage with the corresponding coupling counter-sections 101, respectively, 102 on the transport jaw members 100. Due to the linking of the transport jaw members 100, it is sufficient if merely one transport jaw member 100 is entrained in this manner. The advancement to, i.e. establishment of, the engagement between a transport jaw member 100 and the transport jaw entrainment device 8.11, respectively, 8.21, is followed by a movement of the same in the transport direction X, preferably with a forward feed by half the length of a transport jaw member 100, as a result of which the entire chain of transport jaw members 100 is transported further. It is in this manner, that the shifting described above occurs on the shaping core 4 and a configuration is obtained, as it is depicted in FIG. 4.

[0044] The engagement between the transport jaw entrainment device 8.11, respectively, 8.21 and the corresponding transport jaw member 100 is then released again and the transport jaw entrainment device is correspondingly guided back against the transport direction X into the starting position, where it may be advanced to the next transport jaw member 100, so that the sequence just described may be repeated.

[0045] Before this repetition occurs, the shaping core 4 is initially rotated by 180, as indicated by the arrow in FIG. 5, so that the transport jaw member 100 advanced by half a length is now situated in the drawing on the underside of the shaping core 4. On the upper side of the shaping core 4, new wires lie exposed, onto which another transport jaw member 100 may then be placed, as this is indicated in FIGS. 3 and 4. A pressing device 8.21, respectively, 8.22 may be situated on the same carriage 8.1, respectively, 8.2 in the transport direction X downstream from transport jaw entrainment device 8.11, respectively, 8.21. The arrangement may equally be provided separatelyi.e. not on the same carriage. The pressing device 8.21, respectively, 8.22 serves to press the created windings, respectively, winding heads together once the windings have been removed from the shaping core 4 by the transport process described above.

[0046] The process sequence from FIG. 6 is more narrowly described in detail once again as a detail enlargement. The sections (a) through (f) characterize various sections during the course of the process, starting from the placement of the transport jaw members 100 on the shaping core 4 (a, b), followed by the withdrawal of the winding from the shaping core (c), the pressing of the winding (d), followed by the removal of the transport jaw members from the finished winding (e), and ending with the further transport of the finished winding (f).

[0047] Initially, the transport jaw members 100 are placed on the shaping core 4 (a, b). For this purpose, the shaping core 4 preferably includes recesses or grooves 4a, 4b on the upper side and the lower side, which extend in the longitudinal direction or transport direction X of the shaping core 4, which are dimensioned so that a part of the projections 104 situated between the wire receiving grooves 103 of the transport jaw members 100 is able to dip into the corresponding recesses 4a, respectively, 4b, wherein the individual windings 12.1, respectively 12.2 are received in the corresponding wire receiving grooves 103 of the transport jaw members 100. This situation is depicted, in particular, in section (b). The advantage of these recesses 4a, respectively, 4b is that the corresponding windings 12.1, respectively, 12.2 are pressed down to the bottom of the wire receiving grooves 103, so that they are unable to again slip out of the transport jaw members 100 during the further transport and after the winding 12 has been stripped (c) from the shaping core 4.

[0048] After the transport jaw members have been stripped (d) from the shaping core 4, the corresponding windings are pressed against one another by pressing tools 8.21, respectively, 8.22. With the aid of spacer elements 8.212, respectively, 8.222 on the pressing tools 8.21, respectively, 8.22, it is ensured here that the winding mat 12 with its windings 12.1, respectively, 12.2 is not crushed or damaged during pressing. After the pressing process, the transport jaw members 100 are removed from the wave winding 12 and fed for further use (e). In the process, it is useful to separate the transport jaw members 100 and the wave winding from one another by means of a stripper 14.1, 14.2, since otherwise the windings will potentially tilt in the wire receiving grooves of the transport jaw members 100. Finally, the finished wave winding 12 is transported further (f) in transport direction X in the form of a winding mat, wherein it may be transported via guide elements 15.1, respectively, 15.2, which may be designed, in particular, as toothed belts, so that the teeth are able to grip between the individual windings.

[0049] In the drawings, it is not shown that for this purpose, multiple transport jaw members may be simultaneously placed parallel to one another on the shaping core 4 and on the windings situated thereon in the width direction of the wave winding 12. If, in this regard, the transport jaw members 100 are spaced apart from one another in the width direction of the resulting wave winding, a conveyor device having a toothed belt, for example, adjacent to the wire entrainment device 8 may reach between two transport jaws 100 situated in parallel. In this way, it is ensured that the winding mat 12 may already be grasped and taken by the following conveyor device even when the transport jaw members (e) are released. This may prevent the winding mat 12 from slipping or losing its position in this area.

[0050] As described further above, it is possible with the loose transport jaw members to produce winding mats 12, which include winding spacings that are changeable in the running direction X, in order, for example, to facilitate the introduction of a finished winding mat into a laminated core. For this purpose, the device according to the invention may include a set of transport jaw members 100, each of which has different groove spacings.