DE102022204820A1 - Device for forming a winding head of a coil winding in the production of stator and rotor windings - Google Patents

Abstract

Device 1 for forming a winding head of a coil winding in the production of stator and rotor windings, comprising a carrier unit 2 for receiving a winding 8 and a sliding unit 3 with an inner section 4 movably mounted along a common axis 6 and an outer section 5, which has a shoulder section 7 with a first inclined surface 10, which is designed in such a way as to press a winding 8 received on the carrier unit 2 against a support unit 9 arranged on a laminated core 12 with a second inclined surface 11.

Description

The invention relates to a device for forming a winding head of a coil winding in the production of stator and rotor windings.

The invention lies in the technical field of forming or transfer devices for coil windings in the production of stators and rotors for electrical machines, such as an electric motor.

The word stator is derived from the Latin word “stare” for standing still. The stationary part of an electric motor is called the stator. The rotating part of an electric motor is called a rotor.

There are different types of electric motors. The most important difference between the individual types is the power supply. It is determined during the design whether the motor must be supplied with direct current, alternating current or three-phase current.

But the required magnetic fields are also generated in different ways for each motor. In addition to strong permanent magnets, electromagnets are also used depending on the intended use. In the simplest case, a coil of copper wire is wound over an iron core made of sheet metal plates in order to generate the required magnetic field.

The winding technology essentially determines the properties of electromechanical assemblies with windings, such as insulation strength or quality factor.

In the known radial processes for deforming a winding head, lamellar slides are extended radially against the winding, such as in the ejection or expansion processes. U-shaped tools are then used to sequentially press the top and bottom of the winding against the winding head. So several process steps are required to form the winding head.

In addition, methods with gripper elements are known, whereby the winding is provided radially offset from the component. The winding is gripped at its respective ends by means of a number of gripping elements and expanded into the laminated core groove by moving the gripping elements radially.

The invention has the object of providing a device which overcomes the disadvantages of the prior art and which enables a simple and safe transfer of the winding to the laminated core.

The object is achieved by a device for forming a winding head of a coil winding in the production of stator and rotor windings with the features of independent claim 1. Advantageous embodiments form the subject of the associated subclaims.

The invention includes a device for forming a winding end of a coil winding in the production of stator and rotor windings. The device comprises a carrier unit for holding a winding and a sliding unit. The sliding unit comprises an inner section that is movably mounted along a common axis and an outer section. The outer section includes a shoulder section with a first inclined surface. The shoulder section is designed in such a way as to press a winding received on the carrier unit against a support unit with a second inclined surface arranged on a laminated core. This allows the winding head to be deformed when moving against the laminated core, thereby ensuring a simple and safe transfer of the winding to the laminated core.

An advantageous aspect provides that the shoulder section comprises a first level which projects beyond a second level of the inner section of the sliding unit. This creates a defined winding head shape in which the individual wires do not move against each other.

It is particularly advantageous if the first inclined surface and the second inclined surface are arranged parallel to one another. This simplifies the insertion of the winding into the laminated core by preventing the winding from tilting.

According to a preferred aspect, the first inclined surface and the second inclined surface are arranged at an acute angle relative to the axis. This has the advantage that the inclined surfaces can be arranged in the device to save space and so the sliding unit can be optimally aligned with the laminated core.

According to an advantageous aspect, the height H ₁ of the sliding unit corresponds at least to the height H ₂ of a winding. This enables the entirety of the wires to be enclosed and the insertion of the winding into the laminated core as a whole can be carried out precisely.

It has proven to be advantageous if the device is also attached to the shoulder Design elements with at least one level that can be arranged in a section. The plane can be moved against a winding. This has the advantage that when the winding is applied to the carrier unit, more space is available for the winding, so larger winding packages can be produced.

Advantageously, the device further comprises a press-in unit which is designed to press a winding into a groove in a laminated core. This allows the conductors of the winding to be partially pressed in one direction in the slot in order to create defined installation spaces.

• • Bereitstellung einer Vorrichtung (wie oben beschrieben)
• • Verschieben der Schiebeeinheit in radialer Richtung
• • Andrücken einer auf der Trägereinheit aufgenommenen Wicklung gegen eine an einem Blechpaket angeordnete Abstützeinheit, sodass eine definierte Wicklungsendform hergestellt wird
• • Einführen einer Wicklung in ein Blechpaket.

According to a further aspect, the invention comprises a method for forming a coil winding head in the production of coil windings on stators and/or rotors, comprising the steps:

• • Provision of a device (as described above)
• • Moving the sliding unit in the radial direction
• • Pressing a winding held on the carrier unit against a support unit arranged on a laminated core, so that a defined final winding shape is produced
• • Inserting a winding into a laminated core.

This ensures that when the enameled wire is transferred from the dummy to the laminated core, the insulation of the individual wires in the winding is not damaged.

• 1a einen Schnitt durch eine erfindungsgemäße Vorrichtung mit einer Schiebeeinheit zur Formung eines Wickelkopfes einer Spulenwicklung bei der Herstellung von Spulenwicklungen an Statoren und/oder Rotoren, mit der Schiebeeinheit im eingefahrenen Zustand;
• 1b einen Schnitt durch eine erfindungsgemäße Vorrichtung mit einer Schiebeeinheit zur Formung eines Wickelkopfes einer Spulenwicklung bei der Herstellung von Spulenwicklungen an Statoren und/oder Rotoren, mit der Schiebeeinheit im ausgefahrenen Zustand;
• 2 einen Schnitt durch eine Trägereinheit mit einer Wicklung zur Einführung in ein Blechpaket mittels einer erfindungsgemäßen Vorrichtung;
• 3a einen Schnitt durch eine erfindungsgemäße Vorrichtung mit einer Schiebeeinheit zur Formung eines Wickelkopfes einer Spulenwicklung bei der Herstellung von Spulenwicklungen an Statoren und/oder Rotoren
• 3b einen Schnitt durch eine erfindungsgemäße Vorrichtung mit einer Schiebeeinheit und Designelementen zur Formung eines Wickelkopfes einer Spulenwicklung bei der Herstellung von Spulenwicklungen an Statoren und/oder Rotoren;
• 4a einen Schnitt durch eine Schiebeeinheit mit einer Einpresseinheit im eingefahrenen Zustand; und
• 4b einen Schnitt durch eine Schiebeeinheit mit einer Einpresseinheit im ausgefahrenen Zustand.

The invention will be described in more detail below using exemplary embodiments with reference to drawings. Show this:

• 1a a section through a device according to the invention with a sliding unit for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors, with the sliding unit in the retracted state;
• 1b a section through a device according to the invention with a sliding unit for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors, with the sliding unit in the extended state;
• 2 a section through a carrier unit with a winding for insertion into a laminated core using a device according to the invention;
• 3a a section through a device according to the invention with a sliding unit for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors
• 3b a section through a device according to the invention with a sliding unit and design elements for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors;
• 4a a section through a sliding unit with a press-in unit in the retracted state; and
• 4b a section through a sliding unit with a press-in unit in the extended state.

In 1a is a section through a device 1 according to the invention with a sliding unit 3 for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors. The sliding unit 3 is in the retracted state, with an outer section 5 being retracted towards an inner section 4 and lying completely within a carrier unit 2.

1b shows a section through a device according to the invention with a sliding unit 3 for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors. The sliding unit is in the extended state. The device 1 for forming a winding head of a coil winding in the production of stator and rotor windings comprises a carrier unit 2 for receiving a winding 8. The device 1 also comprises a sliding unit 3 with an inner section 4 which is movably mounted along a common axis 6 and an outer one Section 5. The outer section 5 comprises a shoulder section 7 with a first inclined surface 10. The shoulder section 7 is designed in such a way as to press a winding 8 received on the carrier unit 2 against a support unit 9 arranged on a laminated core 12 and having a second inclined surface 11. The two inclined surfaces 10, 11 are arranged at a defined angle so that a predetermined final winding shape can be produced.

For example, the support unit 9 is designed in several parts.

1b further shows that the first inclined surface 10 and the second inclined surface 11 are arranged parallel to one another. For example, the geometry of the support unit 9 corresponds to one Negative impression of the geometry of shoulder section 7.

Out of 1b It can be seen that the height H ₁ of the sliding unit 3 corresponds at least to the height H ₂ of a winding 8.

The outer section 5 can be moved relative to the inner section 4 along the common axis 6 at least a distance corresponding to the height H ₃ of the winding 8.

The winding 8 is inserted into a laminated core 12 by means of the sliding unit 3, which can be displaced in the radial direction. The sliding unit 3 includes a shoulder section 7, which presses the winding 8 against a support unit 9, so that a predetermined final winding shape can be produced.

• • Bereitstellung einer Vorrichtung 1 wie hier gezeigt
• • Verschieben der Schiebeeinheit 3 in radialer Richtung
• • Andrücken einer auf der Trägereinheit 2 aufgenommenen Wicklung 8 gegen eine an einem Blechpaket 12 angeordnete Abstützeinheit 9, sodass eine definierte Wicklungsendform hergestellt wird
• • Einführen einer Wicklung 8 in ein Blechpaket 12.

The method for forming a coil winding head in the production of coil windings on stators and / or rotors can be used in the 1 The device shown can be carried out and includes the steps:

• • Provision of a device 1 as shown here
• • Moving the sliding unit 3 in the radial direction
• • Pressing a winding 8 received on the carrier unit 2 against a support unit 9 arranged on a laminated core 12, so that a defined final winding shape is produced
• • Insertion of a winding 8 into a laminated core 12.

2 shows a section through a carrier unit 2 with a winding 8 for insertion into a laminated core 12 by means of a device 1 according to the invention.

3a shows a section through a device 1 according to the invention with a sliding unit 3 for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors. The shoulder section 7 comprises a first level 13, which projects beyond a second level 14 of the inner section 4 of the sliding unit 3. For example, the two levels 13, 14 are arranged parallel to one another.

In 3b is a section through a device 1 according to the invention with a sliding unit 3 and design elements 15 for forming a winding head of a coil winding in the production of coil windings on stators and / or rotors.

Out of 3b It can be seen that the first inclined surface 10 and the second inclined surface 11 are arranged at an acute angle relative to the axis 6.

The device 1 further comprises design elements 15 which can be arranged on the shoulder section 7, with at least one plane which is displaceable against a winding 8, so that a final winding shape is formed. For example, the design elements 15 are designed in several parts. It is also conceivable that the design elements 15 are designed in a U-shape.

4a shows a section through a sliding unit 3 with a press-in unit 16 in the retracted state. The press-in unit 16 is designed to press a winding 8 (not shown) into a groove of a laminated core 12 (not shown).

4b shows a section through a sliding unit 3 with a press-in unit 16 in the extended state. By extending the press-in unit, the winding 8 is precisely inserted into a laminated core 12.

Reference symbols

1

contraption

2

Carrier unit

3

Sliding unit

4

inner section

5

outer section

6

axis

7

shoulder section

8th

winding

9

Support unit

10

first inclined surface

11

second inclined surface

12

Sheet metal package

13

first floor

14

second level

15

Design elements

16

Press-in unit

Claims (8)

Device (1) for forming a winding head of a coil winding in the production of stator and rotor windings, comprising a carrier unit (2) for receiving a winding (8) and a sliding unit (3) with an inner movably mounted along a common axis (6). ren section (4) and an outer section (5), which comprises a shoulder section (7) with a first inclined surface (10), which is designed in such a way that a winding (8) received on the carrier unit (2) against one on a To press the laminated core (12) arranged support unit (9) with a second inclined surface (11). Device (1) according to Claim 1 , characterized in that the shoulder section (7) comprises a first level (13) which projects beyond a second level (14) of the inner section (4) of the sliding unit (3). Device (1) according to Claim 1 or 2 , characterized in that the first inclined surface (10) and the second inclined surface (11) are arranged parallel to one another. Device (1) according to one of the preceding claims, characterized in that the first inclined surface (10) and the second inclined surface (11) are arranged at an acute angle relative to the axis (6). Device (1) according to one of the preceding claims, characterized in that the height H ₁ of the sliding unit (3) corresponds at least to the height H ₂ of a winding (8). Device (1) according to one of the preceding claims, further comprising design elements (15) which can be arranged on the shoulder section (7), with at least one plane which is displaceable against a winding (8), so that a final winding shape is formed. Device (1) according to one of the preceding claims, further comprising a press-in unit (16) which is designed to press a winding (8) into a groove of a laminated core (12). Method for forming a coil winding head in the production of coil windings on stators and/or rotors, comprising the steps: • Provision of a device (1) according to one of the preceding claims • Moving the sliding unit (3) in the radial direction • Pressing a winding (8) held on the carrier unit (2) against a support unit (9) arranged on a laminated core (12), so that a defined final winding shape is produced • Inserting a winding (8) into a laminated core (12).

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