Device and method for cross-free winding of coils

Abstract

The invention relates to a device (1) for winding coils (2) without crossing over each other, with multiple winding steps in a coil group. The device comprises at least two telescopically movable and parallel winding templates (3, 4) that rotate about a common axis of rotation (24). Each winding template is equipped with a guide rail (5) on which a first telescopic rail (6) is guided, which in turn carries a second telescopic rail (7). In the first operating position (8), both telescopic rails (6, 7) are fully retracted, thus providing a first chamber (9) for winding an inner coil (21). In a second operating position (11), the first telescopic rail (6) is offset relative to the guide rail (5) to create a second chamber (12) for winding a middle coil (22).In the third operating position (41), the second telescopic rail (7) is offset relative to the first telescopic rail (6), thereby providing a third chamber (13) for winding an outer coil (23). After winding, the coils (21, 22, 23) are arranged concentrically to each other in the device (1).

Description

[0001] The present invention relates to a device and a method for cross-free winding of coils according to claim 1 and claim 10.

[0002] In connection with devices for cross-free winding of coils, it is known from the prior art that such devices are often limited to a specific number of winding steps and a fixed number of winding templates. Such winding templates are known, for example, from DE 197 28 943 A1, US 1 379 755 A, US 3 631 591 A, DE 19 11 551 B and JP H06 - 23 156 Y2. Typically, these are winding templates that cannot be moved telescopically. These rigid winding templates mean that the device must either have a fixed size or be limited by its design, which significantly restricts the flexibility of the winding process.

[0003] A particularly relevant problem with known devices is that the length of the winding templates is limited by the feeder tool. To ensure cross-free winding, the coils must be completely wound on the winding templates before they can be transferred to the feeder tool. However, since the length of the winding templates cannot be arbitrarily increased due to the limitations of the feeder tool, multi-stage winding processes with several winding steps quickly reach physical and design limits. This results in only two winding steps being possible in most cases, which significantly restricts the productivity and flexibility of these devices.

[0004] Furthermore, it is known from the prior art that external guides, such as rods or rails, are frequently used to move the winding templates. However, these external guides are complicated to handle and prone to mechanical problems, especially when several winding templates need to be guided and moved simultaneously. They also do not allow two or more templates to be moved telescopically into one another, which further limits the efficiency and compactness of the system.

[0005] Another disadvantage of known devices is that they are generally designed for specific winding patterns and can only be adapted to changing production requirements with considerable effort. This leads to increased complexity in setting up the winding processes, as well as higher costs and increased susceptibility to errors, especially in motor windings. Furthermore, the numerous wiring tasks that arise when switching between winding templates require significant effort and increase potential sources of error.

[0006] The object of the invention is therefore to provide a device and a method for cross-free winding of coils with several winding steps in a coil group, which avoids or at least reduces the disadvantages of the prior art.

[0007] This problem is solved by a device for cross-free winding of coils with multiple winding steps in a coil group, comprising at least two telescopically movable winding templates, parallel and rotatable about a common axis of rotation, each with a guide rail on which a first telescopic rail, movable relative to the guide rail, is guided, and a second telescopic rail, movable relative to the first telescopic rail and guided on it, wherein in a first operating position of the winding templates, in which the first telescopic rails and the second telescopic rails are fully retracted, the guide rails provide a first chamber for winding a first, inner coil with a winding wire.and the first telescopic rails in a second operating position of the winding templates in which the first telescopic rails and the second telescopic rails are offset from the guide rails, provide a second chamber for winding a second, middle coil with a winding wire, and the second telescopic rails in a third operating position of the winding templates in which the second telescopic rails are offset from the first telescopic rails, provide a third chamber for winding a third, outer coil with a winding wire, so that the first coil, the second coil and the third coil are arranged concentrically to each other in the device after winding.

[0008] This device offers the advantage of a compact design thanks to its telescopically adjustable winding templates, allowing for a shorter insertion length into the drawing tool. This enables the winding templates to be integrated into existing machine designs without requiring significant modifications to the machine structure. Furthermore, the concentric arrangement of the coils after winding allows for precise and space-saving transfer of the windings, resulting in improved winding quality and reduced wiring complexity. This translates into lower costs and reduced motor failure rates, particularly through the reduction of mechanical complexity and potential wiring errors.

[0009] It is understood that the device for cross-free winding of coils with multiple winding steps in a coil group can also have more than two telescopic rails, so that the winding wire can also be wound in more than three chambers.

[0010] First, the individual elements of the claimed subject matter of the invention are explained in the order in which they are mentioned in the claim set, and subsequently, particularly preferred embodiments of the subject matter of the invention are described. device

[0011] For the purposes of this patent application, a device for cross-crossing coils with multiple winding steps in a coil group is a device that makes it possible to wind coils onto a winding template without overlapping winding wires. The device consists of at least two telescopically movable winding templates that rotate about a common axis of rotation. These winding templates are designed to provide one or more chambers for winding wire in different operating positions, with the winding taking place sequentially in the chambers to ensure uniform wire placement without overlaps.

[0012] The device is characterized by a guide unit located inside the winding templates. This guide unit controls the extension and retraction of the individual telescopic rails that connect the winding templates. In a first operating position, the telescopic rails are fully retracted, creating a first chamber in which the wire winding begins. After completion of this first winding step, the guide unit moves the telescopic rails, releasing a second chamber in which the next winding step takes place. In a further operating position, a third chamber is released, allowing multiple coils to be wound in an orderly sequence without the wires crossing over each other.

[0013] The device functions by securing the wire start with a wire start clamp while the winding template rotates to wind the customer-specified number of turns. After each winding step, the next chamber is activated by releasing the clamping or locking unit and sliding the telescopic rails downwards before the clamping unit is re-locked. The winding templates thus allow for multiple winding steps to be performed consecutively without manual intervention, ensuring a high degree of process automation and efficiency.

[0014] Preferably, the clamping unit and / or the locking unit are pneumatically actuated to ensure quick and reliable fixation of the telescopic rails. This results in stable and precise movement of the templates, which significantly improves the winding process and minimizes the risk of wire crossings.

[0015] Advantageously, the winding templates can be designed to include multiple chambers of varying sizes, allowing for flexible adaptation to different coil types. Furthermore, the winding templates can be identical to ensure ease of manufacturing and maintenance. Possible designs include a guide unit consisting of one or more U-shaped bridges that guide the telescopic rails stably and precisely. These bridges ensure that the templates are moved smoothly and guarantee high mechanical stability.

[0016] Furthermore, the device can be equipped with various clamping devices to securely fix the wire start and hold the wire in position throughout the entire winding process. These wire start clamping devices can be mounted on the guide rails or telescopic rails, allowing for a high degree of flexibility in the device design. Wash

[0017] For the purposes of this patent application, coils with multiple winding steps in a coil group are to be understood as coils that are successively provided with windings of one or more winding wires in a successive process. This is a winding process in which the wire turns are applied in several separate winding steps, each step producing a defined number of turns on different chambers of a winding template. A coil group comprises several coils that are wound sequentially or simultaneously in a common device or arrangement, thus forming a group of coils that are functionally and structurally connected.

[0018] The multi-stage winding coils within a coil group serve to create different wire layers in various chambers of a winding template in a coordinated winding process. This allows the windings to be layered or separate wire paths to be implemented as required. This multi-stage winding process enables the efficient and precise creation of numerous layers or separate windings within a single coil group, which is particularly advantageous in complex electrical or electromagnetic applications. Each winding template provides multiple chambers that can be moved telescopically, allowing the winding process to be carried out in different spatial planes without requiring repositioning or adjustment of the template during the process. wrapping template

[0019] For the purposes of this patent application, a winding template is a component used to hold and guide wire or other winding materials within a predefined geometry, enabling the precise winding of a coil. Winding templates are a central component of the winding process, ensuring that the wire is guided without crossings and in precisely defined winding steps.

[0020] The winding templates preferably comprise telescopically extendable elements that allow multiple winding steps to be performed sequentially without the template length exceeding the capacity of the feed tool. The various parts of the winding templates, such as the telescopic rails, are movably mounted on guide rails and can be positioned in different operating positions to expose different chambers of the templates for winding. These operating positions allow several coils to be wound sequentially and subsequently arranged concentrically on top of each other.

[0021] The templates rotate around a common axis of rotation while the wire is continuously fed and wound onto the template surfaces around the two winding templates. Once the winding process is complete, the winding templates are inserted into the feeder tool, ensuring the windings are transferred securely.

[0022] Advantageously, a winding template can consist of several sliding segments, allowing the template length to be varied without affecting the operation of the winding machine. These segments can be held securely in position by clamping or locking units to ensure precise guidance of the template throughout the entire winding process. Preferably, these clamping units are pneumatically actuated to enable quick and reliable fixation of the individual template segments.

[0023] Possible embodiments of the winding template include a version with a varying number of winding chambers, which can be individually adapted depending on the application. For example, the template can be designed for winding processes with two, three, or more chambers, where each chamber can be controlled separately for winding. Guide rail

[0024] For the purposes of this patent application, a guide rail is a mechanical component used for the precise guidance of moving components, in particular telescopic slides. The guide rail is a stable, elongated element designed to direct the movement of the telescopic slides in a defined direction while simultaneously ensuring smooth and low-friction movement of the slides. The guide rail thus forms the structural backbone along which the telescopic slides are moved, preventing unwanted lateral movement or tilting of the slides.

[0025] Preferably, the guide rail is made of a strong, durable material such as steel or aluminum, which provides the necessary mechanical stability while remaining light enough not to unnecessarily increase the overall mass of the device. Advantageously, the guide rail is equipped with precision sliding guides or bearings that ensure smooth and quiet operation of the telescopic slides.

[0026] A preferred embodiment of the invention can be a guide rail with a U-shaped cross-section, in which the outer surface acts as a contact surface for the winding. telescopic rail

[0027] For the purposes of this patent application, a first and second telescopic rail are to be understood as both movable and telescoping rails guided along a guide rail. The first telescopic rail is movable relative to the fixed guide rail, while the second telescopic rail is movable relative to the first. These telescopic rails are arranged so that they can be telescopically moved into one another, thereby reducing or increasing their length as required. This makes it possible to fix the winding templates in different positions during the winding process and thus to achieve the winding of multiple coil chambers in a compact design.

[0028] The function of the telescopic rail is to hold the winding templates in the desired position during the winding process while simultaneously allowing flexible adjustment of the template length. By sliding the first and second telescopic rails, the template is moved into the appropriate position to wind the different coil chambers sequentially. The guide rail serves as a stabilizing element along which the telescopic rails move and align themselves. The telescopic rails can preferably be locked in the desired position using a clamping or locking unit to ensure secure fixation.

[0029] The telescopic rail is advantageously designed such that the first telescopic rail is guided within the guide rail, while the second telescopic rail is movable within the first. Both rails are preferably made of a strong and durable material, such as steel or aluminum, to ensure high stability and longevity. The connection points between the telescopic rails and the guide rail are designed to ensure low-friction and precise movement. Preferably, the telescopic rails have a U-shaped cross-section. chamber

[0030] For the purposes of this patent application, a chamber is a defined section or area of ​​the telescopically movable winding template, designed to accommodate a specific number of turns of a winding wire. Each chamber is responsible for the precise winding of the wire and ensures that the turns are applied without overlaps or crossings.

[0031] Several chambers are arranged one after the other on a winding template, with each chamber being activated and wound in a separate operating position.

[0032] The chamber's function is to hold the wire in a defined space during the winding process and stabilize the windings. Once a chamber is fully wound, the next chamber is activated by telescopically extending from its previous position. This allows for the crossover-free winding of multiple coils in a continuous process. The compact arrangement of the chambers on a winding template enables a greater number of winding steps to be performed without significantly increasing the length of the feeder tool. Advantageous embodiments of the invention

[0033] According to an advantageous embodiment of the invention, it can be provided that the winding templates each comprise a guide unit arranged inside a winding template, by means of which the first telescopic rail and the second telescopic rail are guided.

[0034] The guide unit inside the winding templates offers the advantage of precisely guiding and stabilizing the telescopic rails. This contributes to smooth movement of the telescopic rails and prevents them from tilting or shifting unevenly during the winding process. The internal guide also keeps the system compact and saves valuable machine space.

[0035] According to a further preferred embodiment of the invention, the guide unit may also include a clamping unit and / or a locking unit, which enables the telescopic rails to be guided in series. The integration of a clamping unit and / or a locking unit, which enables the telescopic rails to be guided in series, has the advantage that the templates are held stably in position during operation. This ensures precise positioning of the templates and improves the accuracy of the winding process. The firm fixation prevents the templates from shifting during winding, resulting in better winding quality and a reduced probability of wire crossings. Smooth switching between chambers is also facilitated.

[0036] Furthermore, according to another advantageous embodiment of the invention, the clamping unit or the locking unit can be pneumatically operated and actuated by means of a pneumatic cylinder. Pneumatic actuation of the clamping unit or the locking unit offers the advantage of automated control and increased reliability of the locking mechanisms. Pneumatic systems are known for their durability and low maintenance requirements, which leads to improved operational reliability of the device. In addition, the use of a pneumatic cylinder enables fast and powerful locking, making the entire winding process more efficient. This contributes to a reduction in cycle times and thus to higher productivity.

[0037] According to a further particularly preferred embodiment of the invention, the locking unit may have an actuable bolt which, in a locked position, engages a corresponding positive locking element of the first telescopic rail and / or the second telescopic rail. The use of an actuable bolt engaging a corresponding positive locking element of the telescopic rails creates a mechanically very stable locking mechanism. This ensures precise and secure positioning of the templates during the winding process. An advantage here is that the bolt is mechanically secured in its locked position, thus preventing unintentional movement or loosening of the templates during operation. This increases operational reliability and further improves winding quality.

[0038] Furthermore, the invention can also be further developed in that the guide unit comprises a first, essentially U-shaped bridge, the free legs of which are connected to the first telescopic rail, with the bridge being guided along the guide rail. The U-shaped bridge, whose free legs are connected to the first telescopic rail, ensures robust and stable guidance of the telescopic rails. This offers the advantage that the templates are guided precisely and evenly during adjustment. The U-shaped construction of the bridge also achieves high strength and resistance to mechanical loads, which increases the system's durability. At the same time, this design keeps the system compact.

[0039] In a further preferred embodiment of the invention, the guide unit may also include a second, essentially U-shaped bridge, the free legs of which are connected to the second telescopic rail, with the bridge being guided on the guide rail or the first telescopic rail. The second U-shaped bridge, connected to the second telescopic rail, enables parallel and independent guidance of the telescopic rails, resulting in flexible and precise control of the stencil movements. This ensures that the stencils move smoothly and without tilting, which is particularly advantageous in more complex winding processes with multiple chambers. The use of two separate bridges also increases the structural stability of the entire system and minimizes the risk of mechanical malfunctions.

[0040] It can also be advantageous to further develop the invention by providing a wire start clamping device on the guide rail and / or the first telescopic rail and / or the second telescopic rail, which secures the winding wire during the winding process. The wire start clamping device offers the advantage that the wire remains firmly fixed throughout the entire winding process, which significantly reduces the risk of wire slippage or tangling. This leads to higher precision during winding and improves the quality of the finished coil windings. Furthermore, the clamping device enables automated process start-up, thereby reducing operator effort and accelerating the winding process.

[0041] According to a further preferred embodiment of the invention, the winding templates can be designed to be essentially identical. The identical design of the winding templates offers the advantage of simplified manufacturing and maintenance. Since all templates have the same construction, identical components can be used, which reduces production costs and simplifies warehousing. Furthermore, defective parts can be easily replaced without the need for special spare parts. This increases efficiency and reduces downtime in the production process, as repairs and maintenance work can be carried out more quickly.

[0042] Finally, the problem of the invention can also be solved by a method for cross-free winding of coils comprising the following steps: • Providing a device according to any one of claims 1-9, • Transferring the device to the first operating position of the winding templates • Fixing the wire start of a winding wire to one of the guide rails using a wire start clamping device and starting the winding process, whereby the winding templates rotate around a common axis of rotation to wind a predetermined number of turns onto the first chamber, • Transferring the device to the second operating position of the winding templates • Continuing the winding process, with the winding templates rotating around the common axis of rotation to wind a predetermined number of turns onto the second chamber, • Transferring the device to the third operating position of the winding templates • Continue the winding process, with the winding templates rotating around the common axis of rotation to wind a predetermined number of turns onto the third chamber, • Inserting the winding chambers into a feeder after completion of the winding process and transferring the winding, • Cutting off the winding wire and • Returning the winding chambers to the first operating position of the winding templates.

[0043] The method for cross-free winding of coils offers the advantage of a more efficient and precise winding process. By precisely moving the device into different operating positions, the winding templates can be loaded automatically and sequentially without manual intervention. This significantly reduces the wiring effort on the coils and results in a faster and error-free winding process. The precise control of the winding process ensures high winding quality and minimizes wire crossovers or wire routing errors, thus increasing the overall reliability of the winding and reducing manufacturing costs.

[0044] For the purposes of this patent application, "fixing the wire start of a winding wire to one of the guide rails by means of a wire start clamping device" is also understood to mean that the wire start clamping device need not necessarily be directly attached to one of the guide rails. Rather, the wire start clamping device can also be attached to a separate component, with the wire start clamping device and the guide rail being fixed relative to each other. The crucial point is that the position of the clamping device relative to the guide rail is fixed so that the function of securely fixing the wire start during the winding process is guaranteed, regardless of whether the clamping device is mounted directly or indirectly on the guide rail.

[0045] The invention will now be explained in more detail with reference to figures, without limiting the general concept of the invention.

[0046] It shows: Fig. 1 a device for winding coils without crossing over using two winding templates in a first operating position in a longitudinal side view, Fig. 2 a device for cross-free winding of coils with two winding templates in a second operating position in a longitudinal side view, Fig. 3 a device for cross-free winding of coils with two winding templates in a third operating position in a longitudinal side view, Fig. 4 a device for winding coils without crossing over, with two winding templates in their first, second and third operating positions, each shown in a longitudinal side view, Fig. 5 a wound winding template in its first, second and third operating position in each a longitudinal side view, Fig. 6 a device for winding coils without crossing over using two winding templates in one top view, Fig. 7 a telescopic winding template in perspective top view in a semi-transparent representation, Fig. 8 a detailed view of a telescopic winding template in perspective view, Fig. 9 a perspective cross-sectional view through a telescopic winding template with a locking unit in a semi-transparent representation, Fig. 10 a perspective cross-sectional view through a telescopic winding template with a clamping unit in a semi-transparent representation, Fig. 11 a perspective view of a device for cross-free winding of coils with two winding templates with a guide unit arranged on the outside of the winding templates.

[0047] The Fig. Figures 1-4 show a device 1 for the crossing-free winding of coils 2 with several winding steps in a coil group, comprising two telescopically movable winding templates 3, 4, parallel and rotatable about a common axis of rotation 24, each with a guide rail 5 on which a first telescopic rail 6, displaceable relative to the guide rail 5, is guided, and a second telescopic rail 7, displaceable relative to the first telescopic rail 6 and guided on it. The winding templates 3, 4 are essentially identical in the embodiment shown.

[0048] In a first operating position 8 of the winding scraper ions 3,4, in which the first telescopic rails 6 and the second telescopic rails 7 are fully retracted, the guide rails 5 provide a first chamber 9 for winding a first, inner coil 21 with a winding wire 10. This first operating position is in the Fig. 1 can be seen.

[0049] In a second operating position 11 of the winding templates 3,4, in which the first telescopic rails 6 and the second telescopic rails 7 are offset relative to the guide rails 5, the first telescopic rails 6 then provide a second chamber 12 for winding a second, middle coil 22 with a winding wire 10, which in the Fig. 2 is shown.

[0050] In a third operating position 41 of the winding templates 3,4, in which the second telescopic rails 7 are offset relative to the first telescopic rails 6, the second telescopic rails 7 then provide a third chamber 13 for winding a third, outer coil 23 with a winding wire 10, which in the Fig. 3 can be seen.

[0051] The Fig. Figure 4 shows the different operating positions 8, 11, 41 again in a comparison, while Fig. Figure 5 illustrates the winding of chambers 9, 12, 13 in operating positions 8, 11, 41. This shows that the first coil 21, the second coil 22, and the third coil 23 are arranged concentrically to each other in the device 1 after winding.

[0052] The winding templates 3, 4 each comprise a guide unit 14 arranged inside a winding template 3, 4, by means of which the first telescopic rail 6 and the second telescopic rail 7 are guided. As in the Fig. 9 and Fig. As can be seen in Figure 10, the guide unit 14 comprises a clamping unit 16 and / or a locking unit 17, which enables the telescopic rails 6, 7 to be guided in series. The clamping unit 16 or the locking unit 17 is pneumatically operated and actuated by a pneumatic cylinder 18. The locking unit 17 has an actuable bolt 25 which, in a locked position, engages in a corresponding positive locking element 26 of the first telescopic rail 6 and / or the second telescopic rail 7, which is clearly visible from the Fig. 9 can be understood.

[0053] In the Fig. Figures 7, 9-10 further show that the guide unit 14 comprises a first, essentially U-shaped bridge 20, the free legs 27, 28 of which are connected to the first telescopic rail 6, the bridge 20 being guided on the guide rail 5, and the guide unit 14 further comprises a second, essentially U-shaped bridge 30, the free legs 31, 32 of which are connected to the second telescopic rail 6, the bridge 30 being guided on the guide rail 5 or the first telescopic rail 6. The guide unit 14 also has a rail 33 extending longitudinally along the guide rail 5 and fixed to the guide rail 5, on which the bridges 20, 30 of the telescopic rails 6, 7 are slidably arranged. The carriage 34 is arranged between the rail 33 and the bridges 20, 30, is connected to the corresponding bridge 20, 30, and slides along the rail 33.To prevent the translational movement of the telescopic rails 6, 7 from tilting, the two linear guides 35, 36 run longitudinally along the guide rail 5 and are attached to it as separate components. The free legs 27, 28 of the first U-shaped bridge 20 and the free legs of the second U-shaped bridge 30 engage in the U-shaped linear guides 35, 36, as shown in the diagram. Fig. 7 or the Fig. 10 can see.

[0054] Based on the Fig. Figure 8 clearly shows that a first gap 37 is provided between the guide rail 5 and the first telescopic rail 6, in which the first coil 21 is received after winding. This gap 37 ensures that the winding templates 3, 4 can still be extended telescopically even after winding. The second gap 38 between the first telescopic element 6 and the second telescopic element 7 serves the same function.

[0055] Fig. Figure 11 showed an alternative arrangement of the guide units 14, which in this embodiment are not located inside the winding templates 3, 4, but rather on their outer surfaces. The functional principle of the guide units 14 is analogous to the embodiments in which the guide units 14 are positioned inside the winding templates 3, 4. The space freed up inside the winding templates 3, 4 by relocating the guide units to the outside allows for smaller package heights.

[0056] A wire start clamping device can, for example, be provided on the guide rail 5 and / or the first telescopic rail 6 and / or the second telescopic rail 7, which fixes the winding wire 10 during the winding process. It is also conceivable that a wire start clamping device is arranged outside the rails 5, 6, 7, but is fixedly positioned relative to them, so that the wire start clamping device rotates with the rails 5, 6, 7 and thus winds the winding wire 10 around or into the chambers 9, 12, 13.

[0057] A method for cross-free winding of coils 21, 22, 23 can now comprise the following steps: First, a device 1 is provided, as shown in the Fig.1-10 is known. Then the device 1 is moved into the first operating position 8 of the winding templates 3,4 and the wire start of a winding wire 10 is fixed to one of the guide rails 5 by means of a wire start clamping device and the winding process is started, whereby the winding templates 3,4 rotate about a common axis of rotation 24 in order to wind a predetermined number of turns onto the first chamber 9.

[0058] To mechanically fix the winding templates 3, 4 in the first operating position 8, a clamping unit 16 or locking unit 17 can be activated. This is then released again after the winding of the first chamber 9 is complete.

[0059] The device 1 is then moved into the second operating position 11 of the winding scraper ions 3,4 and the winding process is continued, with the winding scraper ions 3,4 rotating around the common axis of rotation 24 to wind a predetermined number of turns onto the second chamber 12.

[0060] To mechanically fix the winding templates 3,4 in the second operating position 11, a clamping unit 16 or locking unit 17 can be activated again, which is then released again after completion of the winding of the second chamber 12.

[0061] Now the device 1 is moved into the third operating position 41 of the winding templates 3,4 and the winding process is continued, whereby the winding templates 3,4 rotate around the common axis of rotation 24 in order to wind a predetermined number of turns onto the third chamber 13.

[0062] In the third operating position 41, the winding templates 3,4 can also be mechanically fixed by again activating a clamping unit 16 or locking unit 17, which is then released again after completion of the winding of the third chamber 13.

[0063] After the actual winding process is completed, the winding chambers 9, 12, 13 are inserted into a drawing-in tool and the winding is transferred.

[0064] Finally, the winding wire 10 is cut off and the winding chambers 9,12,13 are moved back to the first operating position 8 of the winding templates 3,4.

[0065] The invention is not limited to the embodiments illustrated in the figures. The foregoing description is therefore not to be considered limiting, but rather explanatory. The following claims are to be understood as meaning that a named feature is present in at least one embodiment of the invention. This does not preclude the presence of further features. Insofar as the claims and the foregoing description define 'first' and 'second' features, this designation serves to distinguish between two similar features without establishing any hierarchy. Reference symbol list 1 Device 2 coils 3 wrapping template 4 wrapping template 5 guide rail 6 telescopic rail 7 Telescopic rail 8 Operating position 9th Chamber 10 winding wire 11 Operating position 12th Chamber 13th Chamber 14 Command Unit 16 clamping unit 17 Locking unit 18 pneumatic cylinders 20 Bridge 21 coil 22 coil 23 coil 24 Rotary axis 25 bolts 26 Positive locking devices 27 thighs 28 thighs 30 Bridge 31 thighs 32 thighs 33 rail 34 sleds 35 Linear guide 36 linear guides 37 gap 38 gap 41 Operating position

Claims

[1] Device (1) for winding coils (2) without crossing over in several winding steps in a coil group, comprising at least two winding templates (3, 4) that are telescopically movable into one another, parallel and rotatable about a common axis of rotation (24), each with a guide rail (5) on which a first telescopic rail (6) which is movable relative to the guide rail (5) is guided, as well as a second telescopic rail (7) which is movable relative to and guided on the first telescopic rail (6), wherein the guide rails (5) in a first operating position (8) of the winding templates (3,4), in which the first telescopic rails (6) and the second telescopic rails (7) are fully retracted, provide a first chamber (9) for winding a first, inner coil (21) with a winding wire (10), and the first telescopic rails (6) in a second operating position (11) of the winding templates (3,4), in which the first telescopic rails (6) and the second telescopic rails (7) are offset from the guide rails (5), provide a second chamber (12) for winding a second, middle coil (22) with a winding wire (10), and the second telescopic rails (7) in a third operating position (41) of the winding templates (3,4), in which the second telescopic rails (7) are offset relative to the first telescopic rails (6), provide a third chamber (13) for winding a third, outer coil (23) with a winding wire (10), so that the first coil (21), the second coil (22) and the third coil (23) are arranged concentrically to each other after winding in the device (1). [2] Device (1) according to claim 1, characterized by, that the winding templates (3,4) each comprise a guide unit (14) arranged inside a winding template (3,4) by means of which the first telescopic rail (6) and the second telescopic rail (7) are guided. [3] Device (1) according to claim 1 or 2, characterized by , wherein the guide unit (14) comprises a clamping unit (16) and / or a locking unit (17) which enables the telescopic rails (6,7) to be guided in series. [4] Device (1) according to claim 3, characterized by , that the clamping unit (16) or the locking unit (17) is pneumatically operated and actuated by means of a pneumatic cylinder (18). [5] Device (1) according to any one of the preceding claims 2-4, characterized by, that the locking unit (17) has an actuable bolt (25) which, in a locking position, engages in a corresponding positive locking means (26) of the first telescopic rail (6) and / or the second telescopic rail (7). [6] Device (1) according to any one of the preceding claims 2-5, characterized by , that the guide unit (14) comprises a first, essentially U-shaped bridge (20) whose free legs (27,28) are connected to the first telescopic rail (6), the bridge (20) being guided on the guide rail (5). [7] Device (1) according to any one of the preceding claims 2-6, characterized by , that the guide unit (14) comprises a second, essentially U-shaped bridge (30) whose free legs (31, 32) are connected to the second telescopic rail (7), the bridge (30) being guided on the guide rail (5) or the first telescopic rail (6). [8] Device (1) according to any of the preceding claims, characterized by, that a wire start clamping device is provided on the guide rail (5) and / or the first telescopic rail (6) and / or the second telescopic rail (7) which fixes the winding wire (10) during the winding process. [9] Device (1) according to any of the preceding claims, characterized by , that the winding templates (3,4) are essentially identical. [10] Method for cross-free winding of coils (21,22,23) comprising the following steps: • Providing a device (1) according to any of the preceding claims, • Transferring the device (1) into the first operating position (8) of the winding templates (3,4), • Fixing the wire start of a winding wire (10) to one of the guide rails (5) by means of a wire start clamping device and starting the winding process, wherein the winding templates (3,4) rotate about a common axis of rotation (24) to wind a predetermined number of turns onto the first chamber (9), • Transferring the device (1) into the second operating position (11) of the winding templates (3,4), • Continuing the winding process, with the winding templates (3,4) rotating around the common axis of rotation (24) to wind a predetermined number of turns onto the second chamber (12), • Transferring the device (1) into the third operating position (41) of the winding templates (3,4), • Continuing the winding process, with the winding templates (3,4) rotating around the common axis of rotation (24) to wind a predetermined number of turns onto the third chamber (13), • Insertion of the winding chambers (9, 12, 13) into a drawing tool after completion of the winding process and transfer of the winding, • Cutting off the winding wire (10) and • Returning the winding chambers (9,12,13) ​​to the first operating position (8) of the winding templates (3,4).

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