Crown arrangement device and crown arrangement method

Abstract

In order to reduce the equipment and manufacturing costs when forming the coil winding of the motor, the present invention proposes a crown arrangement device for forming a crown arrangement composed of multiple concentrically arranged crowns of U-shaped electrical conductors to form the coil winding of the motor component, including: a collecting part, which has a plurality of grooves annularly arranged around an axis and bounded by radial connecting plates; a crown positioning device for relative axial positioning of the crown, wherein the crown positioning device has: a supporting device for supporting the electrical conductor of the crown to be plugged in an axial plug-in position, wherein the conductor further protrudes from the collecting part; a retaining device for retaining the conductor of the crown after the plug-in is in a supporting position, in which the conductor of the crown after the plug-in is further moved into the collecting part, the crown positioning device supports the conductor of the second crown to be plugged in by means of the supporting device, and the retaining device retains the conductor of the first crown after the plug-in is in the supporting position.

Description

Technical Field

[0001] The invention relates to a crown arrangement device and a crown arrangement method for forming a crown arrangement consisting of a plurality of concentrically arranged crowns of preferably U-shaped electrical conductors in order to form a coil winding of a component of an electrical machine. Background Art

[0002] The invention is in the field of manufacturing components of electrical machines, such as in particular electric motors and generators, and more particularly in the field of manufacturing coil windings for such components, for example stators. It is known that such coil windings are formed from individual conductors, such as I-pins or hairpins, which are inserted into slots in the housing of the component, wherein the conductor ends are deformed and finally connected to form the coil winding. In order to insert the conductors,

[0003] [1] WO 2018 / 233771 A1,

[0004] [2]WO 2018 / 233774 A1, and

[0005] [3] WO 2018 / 233769 A1

[0006] It is known to first arrange the conductor in the form of a crown and then to insert the crown into a housing.

[0007] According to [1] to [3], the individual pins are clipped in individually and subsequently pre-plugged into a crown in a pre-plug-in socket. For this purpose, a crown-specific socket is pre-set for each crown of the stator. An exemplary pre-plug-in socket is shown in [3]. Figure 1 and consists of slots that are larger in size than the space required by the corresponding crown element in the stator. After each crown element has been pre-plugged into a pre-plug-in seat provided specifically for this purpose, the crown elements are removed from the corresponding pre-plug-in seat one after another by means of the coupling device described and shown in detail in [1] and are joined in a collecting element in the form of a collecting seat. If, for example, the crown element arrangement is to be formed by the first to third crown elements, it is possible to start with the outer crown elements, then transfer the middle crown elements and then the inner crown elements. The collecting seat known from [1] and [2] is similar to the pre-plug-in seat, see [1], only its outer or inner diameter is designed so that all the crown elements therein take up space and not only the individual crown elements (as is the case in the pre-plug-in seat) - therefore the dimensions are designed so that the slots of the collecting seat are larger in the tangential and radial directions, but all seats together require space in the stator. If the outer crown, the middle crown and the inner crown are successively joined in the collecting seat by means of the joining device, all the crowns are jointly removed from the collecting seat by means of the joining device and then joined into the stator by means of the joining device.

[0008] Therefore, in the prior art, according to documents [1] and [2], a crown arrangement and joining method is carried out with the following steps:

[0009] 1.1. Pre-plug each pin into the (external crown) pre-plug seat to form an external crown;

[0010] 1.2. Remove the outer crown from the pre-insertion seat (outer crown) with the aid of a coupling device;

[0011] 1.3. Insert the outer crown into the collecting seat with the aid of a coupling device;

[0012] 2. Treat the middle crown piece similarly;

[0013] 3. Treat the inner crown similarly.

[0014] All crowns are then located in the collecting seat.

[0015] 4. Remove all crown parts from the collecting seat with the aid of the engaging device;

[0016] 5. Insert the entire crown into the stator using a joining device.

[0017] The methods and devices known from [1] to [3] have proven to be effective in producing coil windings with high quality. Summary of the invention

[0018] The present invention has the object of improving the apparatus and method known from [1] to [3] with regard to lower apparatus and process expenditure.

[0019] In order to achieve the above object, the present invention provides a crown placement device and a crown placement method.

[0020] Advantageous embodiments are described herein.

[0021] According to one aspect, the invention provides a crown arrangement device for forming a crown arrangement consisting of a plurality of concentrically arranged crowns of preferably U-shaped electrical conductors in order to form a coil winding of a component of an electric machine, the crown arrangement device comprising:

[0022] a collecting part having a plurality of grooves arranged annularly around the axis and bounded by radial webs, and

[0023] A crown positioning device is used to position one or more crowns relative to each other in the axial direction.

[0024] The crown positioning device comprises: a supporting device for supporting the electrical conductor of the crown to be plugged in an axial plug-in position, in which the conductor further protrudes from the collecting part; and a retaining device for retaining the conductor of the crown that has been plugged in in a supporting position, in which the conductor of the crown that has been plugged in is further moved into the collecting part, and the crown positioning device is configured to support the conductor of the second crown to be plugged in with the aid of the supporting device, while the retaining device retains the conductor of the first crown that has been plugged in in the supporting position.

[0025] By means of the device and method according to an embodiment of the present invention, a U-shaped electrical conductor (hairpin) can be set as a crown. The device and method according to an embodiment of the present invention can also be used for a single-leg conductor (I-pin, i.e. single-leg pin) without a U-shaped bend.

[0026] Preferably, the grooves of the collecting part each have a groove boundary extending in the circumferential direction on a first radial side and each have an opening on a second radial side.

[0027] Preferably, the crown positioning device has a radially and / or axially movable crown positioning guide engaging in the opening, on which the supporting device and / or retaining device is formed.

[0028] Preferably, the groove delimitation is formed on the connecting web and / or on an annular region of the collecting part.

[0029] Preferably, the supporting device has a stop for the conductor which is formed on the end face of the respective crown positioning guide extending transversely to the axis.

[0030] Preferably, the holding device has a side surface on each crown positioning guide which is movable toward the slot delimiting portion so that the conductor can be positioned between the side surface and the slot delimiting portion.

[0031] Preferably, the crown positioning guide is movable so that the conductor can be clamped between the side surface and the slot delimitation. However, clamping does not necessarily have to take place; positioning with small, i.e. non-clamping forces (i.e. without force lines) or also with small play is also possible in principle.

[0032] In the currently preferred design, it is proposed that the opening of the groove is formed on the inner radial side, and the crown positioning guide plate moving device for radially and / or axially moving the crown positioning guide plate can be arranged radially inside the collection part. The entire arrangement can also be mirrored, that is, the opening of the groove is then formed on the outer radial side and the crown positioning guide plate moving device can be arranged radially outside the collection part. Then, for example, a groove can be arranged inside, and the guide plate presses the wire from the outside into the groove arranged inside.

[0033] Preferably, the support point is a stop point at which the preferably U-shaped conductor stops on the receiving part with the end of the U and can be positioned. The same effect also occurs with the I-pin if it has a bend.

[0034] A preferred crown placement device has a gripping device for gripping the conductor and plugging it into a crown, and a control device for controlling the crown positioning device and the gripping device.

[0035] Preferably, the control device is designed to control the gripping device and the crown positioning device so as to:

[0036] Inserting the electrical conductor into the groove of the receiving element in an axial insertion position in which the conductor further protrudes axially from the receiving element so as to form a first crown,

[0037] The first crown is further axially displaced from the axial plug-in position into the collecting element and into the supporting position,

[0038] Inserting the electrical conductor into the groove of the collecting element in an axial insertion position so as to form the second crown element, while the first crown element remains in the supporting position, and

[0039] The second crown is axially displaced into the bearing position.

[0040] According to another aspect, the invention provides a crown arrangement method for forming a crown arrangement consisting of a plurality of concentrically arranged crowns of preferably U-shaped electrical conductors in order to form a coil winding of a component of an electrical machine, the crown arrangement method comprising:

[0041] a) plugging the electrical conductor into a groove of the collecting part which is arranged annularly around the axis and is delimited by radial webs in an axial plug-in position in which the conductor protrudes axially further from the collecting part, so as to form a first crown,

[0042] b) axially displacing the first crown element from the axial plug-in position further into the collecting element and into the supporting position,

[0043] c) plugging the electrical conductor into the groove of the receiving element in an axial plug-in position so as to form the second crown element while holding the first crown element in a supporting position, and

[0044] d) Axially displacing the second crown into the bearing position.

[0045] A preferred design scheme of the crown arrangement method includes the following steps:

[0046] e) plugging the electrical conductor into the groove of the receiving element in the plug-in position so as to form the third crown element, while holding the first and second crown elements in the supporting position, and

[0047] f) Axially displacing the third crown into the bearing position.

[0048] Preferably, the outer crown element is inserted as the first crown element, and the second crown element is inserted radially more inwardly than the first crown element.

[0049] Preferably, an intermediate crown is inserted as the second crown.

[0050] Preferably, an inner crown is inserted as a third crown.

[0051] Preferably, the conductor is supported by a movable stop during plugging in, so that it remains in the plugged-in position during plugging in.

[0052] Preferably, the axial displacement is performed by dropping.

[0053] Preferably, at least one previously inserted crown is held in the supporting position by clamping the conductor between the crown arrangement guide and the annular region of the collecting element.

[0054] Preferably, the axial displacement is performed by means of gravity due to the removal of the support means.

[0055] Preferably, the axial displacement is performed by a relative movement between the receiver and the crown positioning device.

[0056] Preferably, the axial displacement is performed by a relative movement between the upper and lower parts of the collection element or between the upper part of the collection element and the crown positioning device.

[0057] It is therefore preferred that the axial displacement of the crown is carried out by means of gravity. This can be done, for example, by pushing a movable stop inwards and the crown then falling due to gravity, or alternatively by carrying out a relative movement between the collecting part and the crown positioning device - preferably in an actuator-driven manner - and then the crown follows this movement, also due to gravity. The crown can also be moved by a separate upper part of the collecting part that is movable relative to the lower part of the collecting part and / or the crown positioning device, and on which the crown rests when transferring from the plug-in position to the supporting position.

[0058] Preferably, the corresponding crown is displaced axially from the plug-in position into a stop position that is deeper than the support position in which the U-shaped end of the conductor rests on a connecting piece of the receiving part that delimits the groove in the circumferential direction. This also works in the case of I-pins with a bend.

[0059] Preferably, the crown placement method is performed with the aid of a crown placement device according to one of the above-described embodiments.

[0060] Preferably, the crown arrangement method comprises the step of lifting the crown arrangement formed by at least a first and a second crown from a supporting position into a lifted position for delivery to a separate engagement device for embedding the crown arrangement in a component.

[0061] According to another aspect, the present invention provides a computer program product comprising control instructions which, when loaded into a control device of a crown placement apparatus according to one of the above-mentioned designs, cause the crown placement apparatus to execute a crown placement method according to one of the above-mentioned designs.

[0062] A particularly preferred embodiment of the invention provides a device for pre-plugging all crowns. All crowns to be plugged into a crown arrangement can be pre-plugged in a single device.

[0063] The pre-plugging is preferably carried out with the aid of a clamping device in the form of a card holder, as described and shown in detail in German patent application DE 10 2019 114 221.0.

[0064] The advantage of the preferred design of the present invention is that the pre-plug-in seat is eliminated and all crown parts (for example, the outer crown part, the middle crown part and the inner crown part) can be pre-plugged in one device.

[0065] A preferred embodiment of the crown arrangement and joining method has in particular the following process:

[0066] 1. Pre-inserting the individual pins into a crown arrangement device according to one of the above-mentioned designs, preferably by means of a hairpin fixture, to form a plurality of crowns, such as, for example, an outer crown, an intermediate crown and an inner crown,

[0067] 2. Remove all crown parts from the device by means of a coupling device, for example a coupling device known from [1] or [2],

[0068] 3. Join all crown parts into the stator with the help of joining devices.

[0069] Some advantages of the preferred installation mode of the present invention are:

[0070] - Significant cycle time advantage

[0071] -Obviously a "more convenient process"

[0072] -Cancel the pre-plug socket

[0073] - Eliminate the overall handling of the pre-socket (input-output to the splicing unit)

[0074] -More compact facility construction is possible

[0075] Below, some special advantages and features of the preferred design of the present invention are described in detail:

[0076] During pre-plugging, it is highly desirable that the crown or the already pre-plugged pins of the crown protrude from the seat. This is because the hairpin that is already in the seat (i.e. the already pre-plugged pin) should be able to be slightly moved away by the pre-plugging movement of the pin that is currently in the pre-plugging process (the pin that is currently in the hairpin fixture) in order to enable or simplify the pre-plugging. The desired "freedom of movement" includes the already pre-plugged pins, especially in the following case: they protrude from the seat at a defined height. When pre-plugging the crown, it is therefore preferred that the conductor that is already in the seat, such as in particular the hairpin, protrudes from the receptacle.

[0077] Since all crown elements are now to be pre-plugged into the crown element placement device - without the need to use a number of special pre-plugging seats - the preferred embodiment of the invention is based on the idea of ​​accommodating the first crown element that is completely pre-plugged (for example, starting with the outer crown element) into the crown element placement device, i.e., moving it from the raised position provided for pre-plugging into a lower position, so that the second crown element to be pre-plugged next, for example, the middle crown element or its conductor (for example, a hairpin), can then be pre-plugged again into the raised position in the crown element placement device. When pre-plugging the middle crown element, for example, the already pre-plugged outer crown element is in a lower position and the middle crown element currently in the pre-plugging process is in a raised position.

[0078] After all the crowns (e.g. outer crown, middle crown, inner crown) have been pre-inserted into the crown arrangement device, it is advantageous to remove all the crowns again into a raised position, since in this position they can be easily removed from the crown arrangement device by the engagement device so that they can then be engaged in the stator - for further details on the engagement, see the above-mentioned documents [1] and / or [2].

[0079] The preferred configuration of the crown placement device is described below:

[0080] The crown placement device preferably has an internal feed unit, an example of a crown positioning device, which is surrounded by a collecting seat, an example of a collecting element.

[0081] The inner feed unit preferably has a radially movable guide plate which is actuated centrally by a mechanical device (the movement function can be performed in different ways). The inner feed unit is preferably movable axially, in particular vertically.

[0082] As a result, the entire crown / entire assembly—the crown arrangement—can be removed from the crown arrangement device again after pre-plugging in order to remove it by means of the joining device (see [1]).

[0083] Thereby, the individual crowns can be accommodated in the device in a controlled manner.

[0084] The collecting seat preferably has a slot similar to the slot of the stator, only its dimensions (larger outer diameter, smaller inner diameter, tangential slot width larger on both sides) are designed to be significantly larger - thereby simplifying the pre-plugging of the pins, since the positioning of the pins can be achieved, for example, with the help of a robot for reasons of precision. The collecting seat preferably has an annular outer contour and a connecting piece that tapers radially toward the center, but therefore does not have an annular inner contour. The connecting piece forms a slot (which is open toward the center) into which the guide plate of the internal feed unit can be moved, so that it - viewed from above - closes the slot, so that the pin end of the pin to be plugged in presents a "partition" type, on which the pin is placed with its two leg ends. In another embodiment, the arrangement of the feed unit and the collecting seat is mirrored - the collecting seat is on the inside and the feed unit is on the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] The following is a detailed description of an embodiment of the present invention based on the attached drawings. It is shown in the drawings:

[0086] Figure 1 A perspective view of one embodiment of a crown arrangement device with a pre-plugged first crown consisting of an electrical conductor in a plugged position;

[0087] Figure 2 A schematic perspective view showing a crown arrangement device during the insertion process of a first crown;

[0088] Figure 3 A perspective view of a crown arrangement device is shown, wherein a first crown is in a supporting position and a second crown is in a plug-in position;

[0089] Figure 4 A schematic diagram showing a crown positioning device of a crown arrangement device, wherein the crown positioning device is arranged in a receiving member of the crown arrangement device;

[0090] Figure 5 A top view showing a crown arrangement device having a collection member and a crown positioning device;

[0091] Figure 6 Shows something like Figure 4 , wherein the crown positioning device is in another position;

[0092] Figure 7 Shows something like Figure 5 A view in which the crown positioning device is in accordance with Figure 6 in the position;

[0093] Figure 8 showing a section through the crown positioning device;

[0094] Fig. 9 A perspective view showing a collection member;

[0095] Fig.10 An axial top view of the collecting member is shown;

[0096] Fig.11 A top view showing a guide plate of a crown positioning device;

[0097] Fig.12 A perspective view showing a guide plate of a crown positioning device;

[0098] Fig.13 A top view showing the crown placement apparatus with the guide plate removed;

[0099] Fig.14 A partially cut-away view showing a crown arrangement device in an inserted position with a pre-inserted first crown;

[0100] Fig.15 A perspective view of a crown arrangement device with a first crown in a plug-in position, wherein the outer side of the collecting part has been omitted for illustration purposes;

[0101] Fig.16 shows a section through a crown arrangement device, wherein a first crown has been transferred into a supporting position;

[0102] Fig.17 Shown in Fig.16 The crown is arranged in position in the upper end of the device;

[0103] Fig.18 Shown in Fig.16 A perspective view of a crown placement device in position;

[0104] Fig.19 shows a section through the crown arrangement device when the crown positioning device is moved into a position for inserting a second crown;

[0105] Fig. 20 Another intermediate position of the crown positioning device is shown before the second crown is inserted;

[0106] Fig.21 A section through the crown arrangement device is shown in a position in which the second crown is positioned as in Figure 3 As shown in can be plugged in;

[0107] Fig. 22 A section through the crown arrangement device is shown when the second crown is plugged in (the first crown is omitted for the sake of clarity);

[0108] Fig.23 shows a section through the crown arrangement device after the second crown has been transferred into the supporting position (the first crown is omitted for reasons of clarity);

[0109] Fig.24 shows a section through the crown arrangement device in a position in which a third crown can be inserted;

[0110] Fig.25 shows a cross-sectional view through the crown arrangement device with the first to third crowns in a supporting position;

[0111] Fig.26 showing a cross-section through the crown deployment apparatus at an intermediate step prior to removal of the crown deployment, and

[0112] Fig. 27 a section through the crown deployment device during another intermediate step shortly before the crown deployment is removed, and

[0113] Fig.28 A section through the crown deployment device is shown in position for removal of the crown deployment. DETAILED DESCRIPTION

[0114] The exemplary embodiments described in detail below are described based on the manufacture of a stator with three crowns (outer crown, middle crown and inner crown) with hairpins as conductors. In other embodiments not described in detail here, more or fewer crowns are also provided. Instead of hairpins, I pins can also be used as conductors.

[0115] According to the following Figures 1 to 12 First, a first embodiment of a crown arrangement device 10 is shown, which is used for a crown arrangement of a plurality of concentrically arranged crowns of an electrical conductor. Figures 13 to 28 The illustration in clarifies a crown arrangement method for a crown arrangement of a plurality of concentrically arranged crowns of an electrical conductor, which can be performed by means of a crown arrangement device 10 .

[0116] Figure 1 A perspective view of the collecting part 12 of the crown arrangement device 10 is shown with the pre-inserted first crown part 14 a in the axial insertion position 16 in which the first crown part 14 a protrudes further from the collecting part 12 .

[0117] The first crown 14a is formed by a plurality of U-shaped conductors, hereinafter referred to as hairpins 18. Each hairpin 18 has a first leg 20a, a second leg 20b and a top bend 22 between the legs 20a, 20b. The legs 20a, 20b are inserted into the grooves 24 of the receiving member 12 during the plugging process. Figure 2 According to Figure 2 In addition to the collecting element 12 , the crown placement device 10 also has a crown positioning device 26 , a gripping device 28 and a control device 30 .

[0118] The first crown 14 a can be inserted into the collecting element 12 by means of the gripping device 28 .

[0119] like Figure 3 As shown, the crown arrangement device 10 is designed so that it transfers the first crown 14a from an axial insertion position 16, a raised insertion position, in which the clip 18 of the first crown 14a protrudes further upward from the receiving part 12, into a supporting position, in which the clip 18 of the first crown 14a is moved further into the receiving part 12, in order to subsequently pre-insert the second crown 14b in the axial insertion position 16 in the same receiving part 12. The raised axial insertion position 16, in which the clip 18 of the crown 14a, 14b to be inserted protrudes further, is advantageous in order to achieve sufficient free space for movement for the clamping device 28 to precisely insert the clip 18 into the groove 24 of the receiving part 12.

[0120] The crown positioning device 26 is used to position the corresponding crowns 14a, 14b, and is specifically Figures 4 to 8 Shown in. Fig. 9 and 10 The collection member 12 is shown, and Fig.11 and 12 The guide plate of the crown positioning device 26 is shown.

[0121] As best from Fig. 9 and 10 As can be seen in the drawing, the collection part 12 has a plurality of grooves 24 arranged annularly around the central axis. In order to form the grooves 24, the collection part 12 has a groove delimiting portion 34 in the form of an annular shell 36 extending in the circumferential direction. From the annular shell 36, radial connecting pieces 38 protrude in the radial direction, here inwardly, which delimit the grooves 24 in the circumferential direction. Therefore, each groove 24 has a groove delimiting portion 34 on one radial side and an opening 40 on the other radial side, here on the inner side. In the axial top view, the groove 24 thus looks like Fig.10 As can be seen in FIG. 2 , the groove 24 is delimited in an approximately U-shaped manner. In the exemplary embodiment shown, the groove 24 is configured approximately at a right angle in a top view.

[0122] The slots 24 are dimensioned in the radial direction and in the circumferential direction so that their number corresponds to the number of housing slots in the stator housing, which are not shown here, into which the crown arrangement is subsequently introduced. However, the slots 24 of the receiver 12 are dimensioned in the radial direction and in the tangential direction, i.e., in the circumferential direction, to be larger than the housing slots in the stator. The slots 24 are dimensioned so that the legs 20a, 20b of the hairpin 18 are accommodated therein with clearance. The hairpin 18 is preferably formed from a rectangular wire.

[0123] As from Figure 8 and 9 It can be seen that radial projections 42 are formed on some or all of the radial webs 38 at the axial ends of the collection part 12, in particular at the axial ends of the collection part 12 that are oriented upward during normal use. The collection part 12 is thereby supported on the corresponding axial ends of the crown positioning device 26, wherein the radial ends of the crown positioning device 26 are formed complementary to the radial projections 42. Otherwise, as in Figures 1 to 3 As shown in , an annular flange 44 or other fixing areas for fixing the collecting part 12 on a frame not shown in detail can also be provided. Alternatively, the fixing area can also be fixed on an axially movable element.

[0124] exist Figures 4 to 8 , the crown positioning device 26 is shown in detail. The crown positioning device 26 is in particular movable axially relative to the receiving part 12. For example, the crown positioning device 26 is fixed to an axial actuator, which is not shown in detail here, by means of which the crown positioning device 26 can be moved along a central axis oriented in the vertical direction under control via the control device 30. In another design, it can also be provided that the receiving part 12 is movable, while the crown positioning device 26 is arranged stationary.

[0125] The crown positioning device 26 has: a supporting device 46 for supporting the electrical conductor of the crowns 14a, 14b to be plugged in, i.e., the hairpin 18, in the plug-in position 16; and a retaining device 48 for retaining the conductor of the crown 14a that has been plugged in, i.e., the hairpin 18, in a supporting position.

[0126] In order to form the support device 46 and the holding device 48, the crown positioning device 26, which is designed as a feed unit 50 in the embodiment shown here, has a row of guide plates 52, which can be pushed through the opening 40 into the groove 24 and pulled back again therefrom. Preferably, each groove 24 is provided with a respective guide plate 52. The guide plates 52 are preferably movable in the radial direction.

[0127] In the embodiment shown here, the collecting part 12 is designed as an outer ring and the crown positioning device 26 is arranged internally within the collecting part 12. In another embodiment - not shown - the arrangement is reversed, that is, the collecting part 12 is arranged internally by means of radial webs 38 extending radially to the outside, and the crown positioning device 26 is guided as an outer ring around the collecting part 12. In this case, the guide plate 52 can then be pushed radially inwards into the groove 24.

[0128] In order to move the guide plate 52, the crown positioning device 26 is as follows: Figures 4 to 8 It can be seen that there is a base body 54 on which the guide plate 52 is radially movable, and an operating element 56 movable relative to the base body 54, which is movable relative to the base body 54 by the control device 30. The conversion transmission 58 converts the movement of the operating element 56 into the radial movement of the guide plate 52.

[0129] The construction of the base body 54, the actuating element 56 and the conversion transmission 58 can be designed differently, as long as the relative movement of the actuating element 56 and the base body 54 can be converted into a radial movement of the guide plate 52. In the embodiment shown, the actuating element 56 is a push rod 60, which is movable in the axial direction in the base body 54, which is formed by two annular plates and a radial guide therebetween. A conical flange 62 acts on the push rod 60, which engages in an inclined groove 64 of the guide plate 52. As an alternative to this, for example, a cam disk can also be provided for converting the relative movement of the actuating element 56 into a radial movement of the guide plate 52.

[0130] Figure 4 and 5 The crown positioning device 26 is shown with the guide plate 52 moved inwards. Figure 6 and 7 The state of the crown positioning device 26 with the guide plate 52 moved outward is shown. Figure 8 Shown is an externally arranged collecting seat as an example for a collecting part 12, an upper guide plate guide device 66 (for example, part of the base 54), a conical flange 62 as a driving cone for the guide plate 52, the guide plate 52 and a lower guide plate guide device 68 (for example, part of the base 54).

[0131] The collecting member 12 is as follows Figure 7 as well as Fig. 9 and 10 , an annular outer contour - an annular housing 36 - and radially tapering webs 38 can be seen. In the embodiment shown, there is no annular inner contour on the collection part 12, because the guide plate 52 of the crown positioning device 26 can be moved radially from the inside to the outside into the groove 24 between the webs 38. Thus, as by Figure 6and 7 As shown, a "spacer" can be formed.

[0132] exist Fig.11 In the top view and in Fig.12 A single guide plate 52 is shown in the perspective view in FIG. The guide plate 52 has an end face 70 directed upward, a guide plate slot 72 for connection to a mechanical device, and a side surface 74 directed radially outward.

[0133] By radially extending the guide plate 52 , the side surface 74 is moved in the direction of the groove delimitation 34 of each groove 24 .

[0134] The ends of the hairpin, ie the ends of the legs 20a, 20b of the hairpin 18, stand in pre-plugging on the end face 70. The end face 70 serves as a "spacer" type and is thus an embodiment of the support device 46.

[0135] The hairpin 18, in particular its legs 20a, 20b, is radially positioned by the side surface 74 after it has been received in the crown positioning device 26 and in particular in the bearing position 32. The side surface 74, the annular housing 36 and the radial webs 38 form an example for a retaining device 48.

[0136] The guide plate 52 can be moved into the fully retracted position and into a position for supporting the corresponding crown element that is to be just pre-plugged in, controlled by the control device 30. Thus, the guide plate is moved into the n+1 position when there is n number of crown elements (e.g. n=3 in the case of the first to third crown elements 14a, 14b, 14c).

[0137] In the embodiment shown here with the collecting part 12 arranged on the outside and the crown positioning device 26 arranged on the inside, it is advantageous that the outer crown is first inserted as the first crown 14a, then the intermediate crown is inserted as the second crown 14b, and then the inner crown is inserted as the third crown 14c. For the pre-insertion of the outer crown, the guide plate 52 is moved out radially outward. For the pre-insertion of the intermediate crown, the guide plate is moved out radially, preferably so that it abuts on the outer crown in the supporting position 32. For the pre-insertion of the inner crown, the outer crown and the intermediate crown are in the supporting position, and the guide plate is moved out radially outward, preferably abutting on the intermediate crown. In order to form a crown arrangement with three concentric crowns 14a, 14b, 14c, the guide plate 52 is moved in radially completely inward so that the first to third crowns 14a-14c are oriented to each other in the supporting position 32.

[0138] Below, according to Figure 2 and 13The views in Figures 28 illustrate in detail the construction of a crown arrangement consisting of first to third crown elements 14a-14c, starting with an outer crown as the first crown element 14a and ending with an inner crown as the third crown element 14c, as well as the crown arrangement method for constructing such a crown arrangement.

[0139] Fig.13 The original position is shown in which the guide plate 52 of the crown positioning device 26 is moved radially outward to the maximum extent, thereby forming a spacer for the ends of the legs 20a, 20b of the hairpin 18 of the first crown 14a. Figure 8 The guide plate 76, on which the inclined groove is formed and on which the guide plate 52 is seated with its guide groove 72, is moved outwards to the maximum extent by the conversion drive 58. The push rod 60 is moved upwards to the maximum extent.

[0140] In the initial position of the crown positioning device 26, the hairpin 18 is received individually by means of the clamping device 28 and as in Figure 2 24. The inserted hair clip 18 stands upright on the end face 70 with its legs 20a, 20b.

[0141] The gripping device 28 is fixed to a handling device, not shown in detail here, such as in particular a robot arm, and grips the corresponding legs 20a, 20b of the hairpin 18 by means of a first gripper 78 and a second gripper 80. The grippers 78, 80 are moved relative to each other for this purpose. This is all done via the control device 30. For further details of the currently preferred embodiment of the gripping device 28, reference is made to the German patent application DE 10 2019 114 221.0.

[0142] Fig.14 and 15 The pre-inserted outer crown, namely the first crown 14a, is shown, wherein the legs 20a, 20b of the hairpin 18 stand upright on the end face 70 of the guide plate 52. Fig.15 In this regard, the collecting part 12 is shown in section.

[0143] Then, if the first crown 14a is fully inserted, as in Fig.16 As shown in , the crown positioning device 26 moves axially outward relative to the collection member 12. As a result, the hairpin 18 of the first crown member 14a - the outer crown member - also moves downward. The first crown member 14a also moves downward because the legs 20a, 20b stand upright on the end face 70 of the guide plate 52.

[0144] If the crown positioning device 26 has been moved downward, in the supporting position 32, as in Fig.17As shown in FIG. 1 , the hairpin 18 is placed on the collecting member 12 by means of its top bent portion 22. Therefore, the legs 20a, 20b no longer stand upright on the end surface 70.

[0145] The guide plate 52 is moved radially inward by the movement of the operating element 56 until it reaches the position at which the guide plate 52 is moved radially inward. Fig.19 The retracted position is shown in .

[0146] As in Fig. 20 As shown in FIG. , the crown positioning device 26 is then moved axially upward relative to the receiver 12 .

[0147] Then, as in Fig.21 As shown in FIG. 2 , the guide plate 52 of the crown positioning device 26 moves radially outward until it abuts against the first crown 14 a, ie, the outer crown. Thus, the first crown 14 a is positioned.

[0148] By positioning the first crown 14a, sufficient space is provided for pre-insertion of the second crown 14b, for example, an intermediate crown. The insertion of the second crown 14b is then carried out with the aid of the first crown in the bearing position 32, as in Figure 3 Here, the hairpin 18 of the second crown 14b is also clamped by means of a clamping device 28 as for the first crown 14a. Figure 2 Individually pre-plugged as shown in .

[0149] Once the intermediate crown, the second crown, has been inserted, it is also transferred into the bearing position 32 as described above with reference to the example of the outer crown, and the process begins again with the inner crown, the third crown 14 c .

[0150] In the method explained above, the first crown 14 a was already moved downwards in an actuator-activated manner by an axial relative movement of the crown positioning device 26 with the aid of the legs 20 a , 20 b resting on the extended guide plate 52 .

[0151] Below, according to Figures 22 to 24 An alternative method for transferring the first crown 14 a from the plug-in position 16 into the lower bearing position 32 is described.

[0152] Fig. 22 Here again, an initial state is shown, in which the crown positioning device 26 is in the starting position with the extended guide plate 52 and the first crown 14 a is already pre-inserted in the insertion position 16 , with the legs 20 a , 20 b standing on the end faces of the extended guide plate 52 .

[0153] Then, as in Fig.23As shown in , the operating element 56 is moved; the guide plate 52 is moved in. The first crown 14a falls downward due to gravity until the hairpin 18 is placed on the connecting piece 38. Therefore, the first crown 14a is in the supporting position 32.

[0154] Subsequently, the guide plate 52 of the crown positioning device 26 is moved radially outward until it abuts against the first crown 14a. As a result, the first crown 14a is positioned and sufficient space is provided for the pre-insertion of the second crown 14b. Subsequently, the second crown 14b is pre-inserted, wherein the legs 20a, 20b of its hairpin 18 are placed on the end face 70 of the guide plate 52. Subsequently, the guide plate 52 is moved in again so that the second crown 14b, which has been inserted, is then transferred to the support position 32 by gravity and falling.

[0155] In another embodiment, which is not shown in detail here, the collecting part is divided, for example, along a horizontal plane, into an upper collecting part part and a lower collecting part part, which can be moved axially relative to each other by means of an actuator. The collecting part parts can be designed in an annular manner accordingly. The upper collecting part part can be connected to the lower collecting part part, for example. Fig.14 and 15 The guide plate 52 is then moved in a similar position until the hairpin 18 is placed on the connecting piece 38, while the lower collecting part and the crown positioning device 26 remain in their position. Subsequently, the guide plate 52 is moved in. The hairpin 18 is held by the upper collecting part. The upper collecting part is moved downward relative to the lower collecting part and the crown positioning device 26, whereby the first crown 14a is smoothly transferred to the supporting position 32. Subsequently, the guide plate 52 of the crown positioning device 26 is moved radially outward until it abuts against the first crown 14a. As a result, the first crown 14a is positioned and sufficient space is provided for the pre-insertion of the second crown 14b. Subsequently, the second crown 14b is pre-inserted, wherein the legs 20a, 20b of its hairpin 18 are placed on the end face 70 of the guide plate 52. Subsequently, the upper collecting part is moved upward again until the hairpin 18 of the second crown 14b is placed on the connecting piece 38. The two crown elements 14 a and 14 b are then transferred into the bearing position 32 by moving the upper collecting part back in order to insert the third crown element 14 c .

[0156] The pre-plugging in this design therefore has the following steps in a preferred embodiment:

[0157] 1. Pre-insertion of the outer crown member - the first crown member 14a

[0158] 2. Lift the upper part of the collecting part and move the guide plate 52 radially inward.

[0159] 3. Lower the upper part of the collecting member and move the guide plate 52 radially outward.

[0160] 4. Pre-insertion of the intermediate crown member - the second crown member 14b

[0161] 5. Lift the upper part of the collection piece and move the guide plate radially inward.

[0162] 6. Lower the upper part of the collection piece and move the radial guide plate radially outward.

[0163] 7. Pre-insertion of inner crown part - third crown part 14c

[0164] 8. Lift the upper part of the collection piece and move the radial guide plate radially outward.

[0165] 9. It is possible to lower the upper part of the collection piece and remove it with the help of the joint device

[0166] In all the above-mentioned methods, after inserting the first to third crown members 14a-14c, the Fig.25 , in which all crown elements 14 a - 14 c are in the support position 32 and rest on the connecting piece 38 of the collecting element 12 .

[0167] The removal of the crown arrangement 82 formed in this way is preferably carried out by means of the engagement device known from [1] and [2]. It is advantageous for this to protrude from the collection part 12, that is, all crowns 14a, 14b, 14c are in the plug-in position 16 in a concentric position.

[0168] In this regard, from Fig.25 In the position shown in FIG. 1 , the crown positioning device 26 is moved axially downward relative to the collection member 12 until the guide plate 52 is below the legs 20a, 20b. Fig. 27 As shown in , the guide plate 52 is moved out, and then the crown positioning device 26 is moved axially upward again relative to the collection part 12. The crown arrangement 82, the legs 20a, 20b of all the hairpins 18 of the first to third crowns 14a-14c stand upright on the end face 70 of the guide plate 52. Then, as in Fig.28 As shown in FIG. , the crown arrangement 82 is moved upward by the relative axial movement of the crown positioning device 26 with respect to the collecting member 12. Then, in Fig.28 In the position shown in , the crown arrangement 82 can be removed by means of a joining device (not shown here) but known from [1] and [2] and inserted into the stator housing.

[0169] List of reference numerals:

[0170] 10 Crown placement equipment

[0171] 12 Collection pieces

[0172] 14a First crown

[0173] 14b Second crown

[0174] 14c Third crown

[0175] 16 Axial plug-in position

[0176] 18 Cards

[0177] 20a First Leg

[0178] 20b Second leg

[0179] 22 Top bend

[0180] 24 slots

[0181] 26 Crown positioning device

[0182] 28 Clamping device

[0183] 30 Control device

[0184] 32 Support position

[0185] 34 slot boundary part

[0186] 36 Ring housing

[0187] 38 Radial connecting piece

[0188] 40 Opening

[0189] 42 Radial protrusion

[0190] 44 Annular flange

[0191] 46 Support device

[0192] 48 Holding device

[0193] 50 Feed unit

[0194] 52 Guide

[0195] 54 Matrix

[0196] 56 Control elements

[0197] 58 Transmission conversion parts

[0198] 60 Putter

[0199] 62 Conical flange

[0200] 64 Chute

[0201] 66 Upper guide plate guide device

[0202] 68 Lower guide plate guide

[0203] 70 End face

[0204] 72 Guide slot

[0205] 74 side surface

[0206] 76 Guide plate

[0207] 78 First fixture

[0208] 80 Second clamp

[0209] 82 Crown arrangement

Claims

1. A crown arrangement device (10) for forming a crown arrangement (82) consisting of a plurality of concentrically arranged crowns (14a, 14b, 14c) of an electrical conductor in order to form a coil winding of a component of an electrical machine, the crown arrangement device comprising: A collecting part (12) having a plurality of grooves (24) arranged in an annular manner around the axis and bounded by radial webs (38), and A crown member positioning device (26) is used to position one or more of the crown members (14a, 14b, 14c) relative to each other in the axial direction. The crown positioning device (26) comprises: a supporting device (46) for supporting the electrical conductors of the crowns (14a, 14b, 14c) to be plugged in an axial plug-in position (16), in which the electrical conductors are plugged into the grooves (24) of the collecting member (12) one by one to form the crowns (14a, 14b, 14c), and in which the conductors further protrude from the collecting member (12); and a retaining device (48) for holding the crowns that have been plugged in. The conductors of the crown pieces (14a, 14b, 14c) are held in a supporting position (32), in which the conductors of the crown pieces (14a, 14b, 14c) that have been plugged in are further moved into the collecting piece (12), and the crown piece positioning device is configured to support the conductor of the second crown piece (14b) to be plugged in by means of the supporting device (46), while the holding device (48) holds the conductor of the first crown piece (14a) that has been plugged in in the supporting position (32). The grooves (24) of the collecting member (12) have groove-limiting portions (34) extending in the circumferential direction on the first radial side and openings (40) on the second radial side, and the crown-shaped member positioning device (26) has radially and / or axially movable crown-shaped member positioning guides engaged in the openings (40), the supporting device (46) and the retaining device (48) are formed on the crown-shaped member positioning guides, and the retaining device (48) has side surfaces (74) on each crown-shaped member positioning guide that can be moved toward the groove-limiting portions (34), so that the conductor can be positioned between the side surfaces (74) and the groove-limiting portions (34).

2. The crown placement device (10) according to claim 1, It is characterized in that The groove delimitation (34) is formed on the connecting piece and / or on an annular region of the collecting element (12), and / or The support device (46) has a stop for the conductor formed on an end face (70) of each crown positioning guide extending transversely to the axis.

3. The crown placement device (10) according to claim 1 or 2, It is characterized in that The opening (40) of the groove (24) is formed on the inner radial side, and a crown positioning guide movement device for radially and / or axially moving the crown positioning guide can be arranged radially within the collecting part (12).

4. The crown placement device (10) according to claim 1 or 2, It is characterized in that The conductor is U-shaped.

5. The crown placement device (10) according to claim 4, It is characterized in that The support position (32) is a stop position, at which the conductor is stopped by its U-shaped end on the collecting part (12) so that it can be positioned.

6. The crown placement device (10) according to claim 1 or 2, It is characterized in that A clamping device (28) is provided for clamping the conductor and plugging it into a crown (14a, 14b, 14c), and a control device (30) is provided for controlling the crown positioning device (26) and the clamping device (28).

7. The crown placement device (10) according to claim 6, It is characterized in that The control device (30) is designed to control the clamping device (28) and the crown positioning device (26) so as to: Inserting the electrical conductor into the groove (24) of the collecting element (12) in an axial insertion position (16), in which the conductor further protrudes axially from the collecting element (12), so as to form a first crown (14a), The first crown (14a) is further axially displaced from the axial plug-in position (16) into the collecting element (12) and into the supporting position (32), Inserting the electrical conductor into the groove (24) of the collecting element (12) at the axial insertion position (16) to form a second crown (14b), while holding the first crown (14a) at the supporting position (32), and The second crown (14b) is axially displaced into the bearing position (32).

8. A crown arrangement method for forming a crown arrangement (82) consisting of a plurality of concentrically arranged crowns (14a, 14b, 14c) of an electrical conductor in order to form a coil winding of a component of an electrical machine, the crown arrangement method comprising: a) plugging the individual electrical conductors one by one into grooves (24) of the collecting part (12) arranged annularly around the axis and bounded by radial connecting pieces (38) in an axial plug-in position (16) in which the conductors further protrude axially from the collecting part (12) to form a first crown (14a), b) further axially displacing the first crown element (14a) from the axial plug-in position (16) into the collecting element (12) and into a supporting position (32), c) plugging the individual electrical conductors one by one into the grooves (24) of the collecting element (12) at the axial plug-in position (16) so as to form a second crown (14b), while keeping the first crown (14a) at the supporting position (32), and d) Axially displacing the second crown (14b) into the bearing position (32).

9. The crown arrangement method according to claim 8, It is characterized in that e) plugging the individual electrical conductors one by one into the grooves (24) of the collecting element (12) at the plug-in position so as to form a third crown (14c), while holding the first and second crowns (14a, 14b, 14c) at the support position (32), and f) Axially displacing the third crown (14c) into the bearing position (32).

10. The crown arrangement method according to claim 8 or 9, It is characterized in that As the first crown member (14a) is inserted into the outer crown member, and the second crown member (14b) is inserted radially more inwardly than the first crown member (14a), and / or As a second crown (14b) plugged into the intermediate crown, and / or As a third crown (14c) inserted into the inner crown, and / or During plugging, the conductor is supported by a movable stop so that the conductor remains in the plugged position during plugging, and / or The axial displacement is performed by falling, and / or At least one previously inserted crown (14a, 14b, 14c) is held in the support position (32) by clamping the conductor between the crown arrangement guide and the annular region of the collecting element (12), and / or The axial displacement is performed by means of gravity caused by the removal of the support means (46), and / or The axial displacement is performed by relative movement between the collecting member (12) and the crown positioning device (26); and / or The axial displacement is carried out by a relative movement between the upper and lower parts of the collecting element (12) or between the upper part of the collecting element and the crown positioning device (26).

11. The crown arrangement method according to claim 8 or 9, It is characterized in that The corresponding crown is displaced from the plug-in position into a stop position which is deeper than the support position (32), in which the U-shaped end of the conductor rests on a connecting piece of the collecting part (12) which delimits the groove (24) in the circumferential direction.

12. The crown arrangement method according to claim 8 or 9, It is characterized in that A crown arrangement (82) formed by at least the first and second crowns (14a, 14b) is lifted from the support position (32) into a lifted position for delivery to a separate joining device for embedding the crown arrangement (82) in a component.

13. The crown arrangement method according to claim 8, It is characterized in that The conductor is U-shaped.

14. A computer program product comprising control instructions which, when loaded into a control device of a crown placement device (10) according to any one of claims 1 to 7, cause the crown placement device (10) to perform a crown placement method according to any one of claims 8 to 13.

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