DE102021214478A1 - Manufacturing device and method for manufacturing a rotor bandage for a rotor - Google Patents

Abstract

A manufacturing device (100) for manufacturing a rotor bandage for a rotor (102) is presented, which has a supply unit (104) for providing a strip-shaped semi-finished product (106), a connection unit (108) for connecting a free end of the semi-finished product (106). the rotor (102), a rotating unit (110) for rotating the rotor (102) in order to wind the semi-finished product (106) around the rotor (102), and a control device (112) which is designed to transmit a rotating signal (114 ) to the rotary unit (110) to cause the rotor (102) to rotate in order to wind a band-shaped semi-finished product (106) around a lateral surface of the rotor (102) in order to apply the rotor bandage to the rotor (102).

Description

The present invention relates to a manufacturing device and a method for manufacturing a rotor bandage for a rotor.

In order to manufacture electric motors, manufacturing devices are used which require a large amount of space, which is due, for example, to high requirements with regard to occupational safety.

Against this background, the present invention provides an improved manufacturing device and an improved method for manufacturing a rotor bandage for a rotor according to the main claims. Advantageous configurations result from the dependent claims and the following description.

The approach presented here creates a possibility of realizing a production device with a small space requirement. At the same time, for example, a high level of occupational safety and good environmental compatibility can be ensured, since a required amount of material waste is reduced using the approach presented here. Furthermore, manufacturing costs can advantageously be reduced.

A manufacturing device for manufacturing a rotor bandage for a rotor is presented, which has a supply unit for supplying a band-shaped semi-finished product, a connection unit for connecting a free end of the semi-finished product to the rotor, a rotating unit for rotating the rotor in order to wind the semi-finished product around the rotor and a control device which is designed to provide a rotation signal to the rotation unit in order to cause rotation of the rotor in order to wind the band-shaped semi-finished product around a lateral surface of the rotor in order to apply the rotor bandage to the rotor.

For example, the manufacturing device may be in the form of a device designed to manufacture the rotor casing. The production device can also be referred to as a winding device, for example. The rotor can be formed, for example, as a rotor for an electric motor. The semi-finished product can have glass fibers, aramid fibers or carbon fibers, for example. Furthermore, the rotating unit may be rotatably formed in a receiving portion where the rotor is placed to rotate the rotor. The lateral surface can be an outer surface of the rotor, for example. Advantageously, the production device can wind the rotor bandage formed from the semi-finished product around the rotor in a simplified manner. Furthermore, a production time can also be shortened as a result.

According to one embodiment, the connection unit can have a clamping element for clamping the free end of the semi-finished product to the rotor. The clamping element can be shaped like a clamp, for example. Furthermore, the connection unit can be designed to put on the clamping element before the rotor is rotated and to remove it after the rotor has been rotated, for example to pull it out.

The clamping element may comprise a magnetic material in order to be held on the rotor by a magnetic field of the rotor. The magnetic field of the rotor can advantageously be generated by a permanent magnet arranged in the rotor. The rotor advantageously has a large number of permanent magnets in order to be able to maintain the magnetic field in an operating state of the rotor.

Furthermore, the clamping element can be formed as a clamping plate. Advantageously, the clamping element can be formed as a small metal plate.

According to one embodiment, the connection unit can be formed as part of the delivery unit. Alternatively, the connection unit can be formed as part of a feed unit, which can be formed, for example, to feed the rotor to the manufacturing device. Furthermore, the clamping element can be formed as part of the supply unit or as part of the connection unit.

In addition, the rotary unit can be designed to rotate the rotor by at least one full revolution. Advantageously, the turning unit can turn the rotor by 360° or by 720°. Furthermore, the rotary unit can be designed to be axially movable in order to achieve a uniform winding around the rotor.

According to one embodiment, the production device can have a severing unit for severing the semi-finished product subsequent to the rotation of the rotor. The separating unit can, for example, cut through the semi-finished product so that the rotor can advantageously be removed, for example for a curing process. The free end of the remaining semi-finished product can then be attached to the rotor in order to apply a further layer or can be attached in a corresponding manner to a rotor to be bandaged subsequently.

The production device can furthermore have an impregnation unit which is designed to receive the rotor wrapped with the rotor bandage after the semi-finished product has been severed for an impregnation process. The impregnation unit can, for example, have an interior space in which the rotor is arranged during impregnation.

According to one embodiment, the supply unit can have an impregnation chamber which is designed to impregnate the semi-finished product when the semi-finished product is passed through the impregnation chamber. In this way, the semi-finished product can advantageously be impregnated using an impregnating agent, for example resin, before it is applied to the rotor.

According to one embodiment, the manufacturing device can have a feeding unit for feeding the rotor to the rotary unit. Advantageously, the feed unit can be formed as a gripping arm. The gripper arm can be implemented as a robot arm, for example.

Furthermore, the manufacturing device may have a removal unit for removing the rotor from the rotary unit. The removal unit can also be implemented as a gripping arm. Only optionally can the removal unit be shaped in order to remove the rotor from the impregnation unit.

A method for producing a rotor bandage for a rotor is also presented, the method comprising a step of providing a strip-shaped semi-finished product, a step of binding a free end of the semi-finished product to the rotor and a step of rotating the rotor in order to rotate the semi-finished product to wind the rotor.

The method can be carried out, for example, using a production device in an aforementioned variant.

According to one embodiment, the semi-finished product can be mechanically attached to the rotor in the attachment step. Advantageously, a free end of the semi-finished product can be pressed onto the rotor and remain on the rotor, for example by means of static friction.

According to one embodiment, the rotor and a clamping element of the manufacturing device arranged on the rotor can be rotated in the rotating step. This means that the clamping element can rotate with the rotor and accordingly remains in the position at which it was applied to the rotor.

In the rotating step, the rotor can be rotated at least one full revolution. Advantageously, the rotor can be rotated 360° or 720°.

• 1 eine schematische Darstellung eines Herstellungsvorrichtung gemäß einem Ausführungsbeispiel;
• 2 eine schematische Darstellung einer Anbindungseinheit einer Herstellungsvorrichtung gemäß einem Ausführungsbeispiel;
• 3 eine schematische Darstellung eines Ausführungsbeispiels einer Herstellungsvorrichtung;
• 4 eine schematische Darstellung eines Ausführungsbeispiels einer Herstellungsvorrichtung;
• 5 eine schematische Darstellung eines Ausführungsbeispiels einer Herstellungsvorrichtung; und
• 6 ein Ablaufdiagramm eines Verfahrens zum Herstellen einer Rotorbandage für einen Rotor.

The invention is explained in more detail by way of example with reference to the attached drawings. Show it:

• 1 a schematic representation of a manufacturing device according to an embodiment;
• 2 a schematic representation of a connection unit of a manufacturing device according to an embodiment;
• 3 a schematic representation of an embodiment of a manufacturing device;
• 4 a schematic representation of an embodiment of a manufacturing device;
• 5 a schematic representation of an embodiment of a manufacturing device; and
• 6 a flowchart of a method for producing a rotor bandage for a rotor.

In the following description of preferred exemplary embodiments of the present invention, the same or similar reference symbols are used for the elements which are shown in the various figures and have a similar effect, with a repeated description of these elements being dispensed with.

1 10 shows a schematic representation of a manufacturing device 100 according to an embodiment. The production device 100 is designed to produce a rotor binding for a rotor 102 . For this purpose, production device 100 has a supply unit 104 for supplying a strip-shaped semi-finished product 106, a connecting unit 108 for connecting a free end of semi-finished product 106 to rotor 102, and a rotating unit 110 for rotating rotor 102 in order to rotate semi-finished product 106 around rotor 102 wrap. Furthermore, the production device 100 has a control device 112 which is designed to provide a rotation signal 114 to the rotation unit 110 in order to cause the rotor 102 to rotate. Consequently, the strip-shaped semi-finished product 106 is wound around a lateral surface of the rotor 102 in order to apply the rotor binding to the rotor 102 . The rotary unit 110 is designed to rotate the rotor 102 by at least one full revolution. This means that the rotor 102 is rotated by, for example, 360° or 720°. Furthermore, the turning unit only optionally moved axially to wrap the rotor 102 evenly.

Only optionally is the connection unit 108 formed as part of the provision unit 104 . Alternatively, the connection unit 108 is formed, for example, as part of a feed unit 116 which is designed to feed the rotor 102 to the rotary unit 110 . The feed unit 116 is implemented or can be implemented as a gripping arm, for example. According to this exemplary embodiment, the production device 100 additionally has a removal unit 118 which, according to this exemplary embodiment, is likewise formed as a gripping arm. In this case, the removal unit 118 is formed in order to remove the rotor 102 from the rotary unit 110 and only optionally from an impregnation unit 120 of the production device 100 . Both the feed unit 116 and the removal unit 118 are arranged such that they can move axially, for example.

The impregnation unit 120 is formed, for example, to discharge an impregnation agent such as resin so that the rotor bandage of the rotor 102 is impregnated therewith. The impregnating agent can also be designated as a hardening material, for example. According to this exemplary embodiment, the supply unit 104 and the impregnation unit 120 are arranged adjacent to one another. Furthermore, the production device 100 has an interior 122 which is divided, for example, into a winding area 124 and an impregnation area 126 . The rotor is wrapped with the semi-finished product 106 in the winding area 124 and wetted with the impregnating agent in the impregnation area 126 . For example, the impregnation agent is provided to the impregnation unit 120 using an impregnation line 128, which is designed, for example, to receive the rotor 102 wrapped with the rotor bandage after the semifinished product 106 has been severed for the impregnation process, for example in the impregnation area 126. Only optionally, the manufacturing device 100 has a severing unit for severing the semi-finished product 106 after the rotor 102 has been rotated.

In general, winding systems are used according to a lathe principle. A winding core or a component to be wound is clamped in the winding system and rotated by an electric drive. This rotational movement of the core pulls fibers from a spool, for example, and conveys them through a resin impregnation bath to the core. A simultaneous axial movement of a laying eye allows the fibers to cover the entire core. A creel, an impregnation bath and a turning device including the laying eye each form a separate unit. In the case of long components, this results in a high space requirement for the system, for example due to a distance between the creel and the laying eye, so that such winding systems are oversized for rotor bandaging.

Against this background, the production device 100 for rotors 102, which is also referred to as a bandaging unit, is presented, for example, without components that are not required and which result in a cost reduction. Furthermore, according to this exemplary embodiment, automatic fiber attachment and detachment, for example using a robot, is integrated, so that it is no longer designed only for feeding the rotors from the production tool 100 to optional subsequent processes.

The production device 100 is designed, for example, as an automatic winding machine with a functionalized feed unit 116 . Using the feeding unit 116, the rotor 102 is fed to the manufacturing apparatus 100. FIG. The semi-finished product 106 comprising fibers is then connected to the rotor 102 using the connection unit 108 . The rotational movement of the rotor 102 pulls the fibers off a spool, for example. At the same time, for example, an axial feed movement takes place, so that the complete rotor 102 is overwound. For example, the semi-finished product 106 is severed or cut off, so that the rotor 102 is removed from the manufacturing device 100, for example using the removal unit 118, and is made available, for example, for a subsequent process.

In short, the production device 100 assumes a provision function for the semi-finished product 106 using the provision unit 104, an impregnation function for the semi-finished product 106 and a build-up of a thread pretension during winding.

2 shows a schematic representation of a connection unit 108 of a manufacturing device according to an embodiment. The connection unit 108 shown here corresponds, for example, to that in 1 described connection unit 108 and can accordingly be implemented in a production device, as is the case, for example, in 1 was described. According to this exemplary embodiment, a sectional view of the connection unit 108 is shown. The connection unit 108 has, for example, a clamping element 200 for clamping a free end 202 of the semi-finished product 106 to the rotor 102 . For example, the clamping element 200 is put on before the rotor 102 rotates and afterwards removed at the turning. According to this embodiment, the clamp member 200 is formed as a clamp plate having a magnetic material. This enables the semi-finished product 106 to be held by a magnetic field of the rotor 102 . For this purpose, the rotor 102 has at least one permanent magnet 204 . According to this exemplary embodiment, the connection unit 108 also has a movable pressing element 206 which is designed to press the clamping element 200 onto the rotor 102 .

3 shows a schematic representation of an embodiment of a manufacturing device 100. The manufacturing device 100 shown here corresponds or is at least similar to that in FIG 1 described production device 100. According to this exemplary embodiment, only one position of the impregnation line 128 differs from that in 1 impregnation line 128 shown. According to this exemplary embodiment, it is arranged on the impregnation area 126 .

In other words, according to this exemplary embodiment, the rotor 102, which is completely wrapped with a dry semi-finished product 106, is impregnated with the impregnating agent, for example, via a line sprue or slot sprue, which is also referred to as sprue impregnation, for example.

4 shows a schematic representation of an embodiment of a manufacturing device 100. The manufacturing device 100 shown here is at least similar to that in one of FIG 1 or 3 described manufacturing device 100. The in 4 The manufacturing device 100 shown also has the feed unit 116, but not the removal unit. According to this exemplary embodiment, the feed unit 116 assumes a removal function after the rotor 102 has been wrapped with the semi-finished product 106 and finally impregnated. According to this exemplary embodiment, the supply unit 104 has an impregnation chamber 400 which is designed to impregnate the semi-finished product 106 when the semi-finished product 106 is passed through the impregnation chamber 400 . The impregnating agent used for this is, for example, resin or a resin mixture, which is designed, for example, to harden the semi-finished product 106 . In other words, the semi-finished product 106, which is also referred to as a roving, for example, is impregnated in the impregnation chamber 400, which is continuously filled with a 2-component resin system, for example, in order to cause the rotor 102 to be wet-wound.

5 shows a schematic representation of an embodiment of a manufacturing device 100. The manufacturing device 100 shown here is similar to that in FIG 4 described manufacturing device 100. The only difference to this is that in 5 Manufacturing device 100 described does not have an impregnation chamber. This means that the semi-finished product 106 according to this exemplary embodiment is provided as an already impregnated semi-finished product 106 using the supply unit 104 . This means that a pre-impregnated roving is fed to the production device 100, which is also referred to as towpreg.

6 shows a flow chart of a method 600 for producing a rotor bandage for a rotor. The method 600 is, for example, in a manufacturing device as in one of 1 , 3 until 5 was described, carried out or controlled. The method 600 includes a step 602 of providing a strip-shaped semi-finished product, a step 604 of binding a free end of the semi-finished product to the rotor, for example mechanically, and a step 606 of rotating the rotor in order to wind the semi-finished product around the rotor. Only optionally, in step 606 of rotating, the rotor is rotated by at least one full revolution, that is to say by 360° or by 720°, for example. Furthermore, in step 606 of rotating, the rotor and a clamping element of the manufacturing device arranged on the rotor are rotated, as is the case, for example, in FIG 2 was described.

Reference List

100

manufacturing device

102

rotor

104

delivery unit

106

Workpiece

108

connection unit

110

turning unit

112

control device

114

turning signal

116

feeding unit

118

extraction unit

120

impregnation unit

122

inner space

124

changing area

126

impregnation area

128

impregnation line

200

clamping element

202

free end of the semi-finished product

204

permanent magnet

206

push element

400

impregnation chamber

600

Process for manufacturing a rotor bandage for a rotor

602

step of providing

604

step of binding

606

step of turning

Claims (15)

Manufacturing device (100) for manufacturing a rotor bandage for a rotor (102), the manufacturing device (100) having the following features: a supply unit (104) for supplying a band-shaped semi-finished product (106); a connection unit (108) for connecting a free end (202) of the semi-finished product (106) to the rotor (102); a rotating unit (110) for rotating the rotor (102) to wind the stock (106) around the rotor (102); and a control device (112) which is designed to provide a rotary signal (114) to the rotary unit (110) in order to cause the rotor (102) to rotate in order to wrap a strip-shaped semi-finished product (106) around a lateral surface of the rotor (102) to wrap to apply the rotor bandage to the rotor (102). Production device (100) according to claim 1 , The connection unit (108) having a clamping element (200) for clamping the free end (202) of the semi-finished product (106) to the rotor (102). Production device (100) according to claim 2 , wherein the clamping element (200) comprises a magnetic material in order to be held on the rotor (102) by a magnetic field of the rotor (102). Production device (100) according to any one of claims 2 until 3 , wherein the clamping element (200) is formed as a clamping plate. Manufacturing device (100) according to one of the preceding claims, wherein the connection unit (108) is formed as part of the supply unit (104). Manufacturing device (100) according to any one of the preceding claims, wherein the rotary unit (110) is adapted to rotate the rotor (102) by at least one full revolution. Manufacturing device (100) according to one of the preceding claims, with a severing unit for severing the semi-finished product (106) subsequent to the rotation of the rotor (102). Production device (100) according to claim 7 , with an impregnation unit (120) which is designed to receive the rotor (102) wrapped with the rotor bandage after the semi-finished product (106) has been severed for an impregnation process. Manufacturing device (100) according to one of the preceding claims, wherein the supply unit (104) has an impregnation chamber (400) which is designed to impregnate the semi-finished product (106) when the semi-finished product (106) is passed through the impregnation chamber (400). Manufacturing apparatus (100) according to any one of the preceding claims, comprising a feeding unit (116) for feeding the rotor (102) to the rotary unit (110). Manufacturing device (100) according to one of the preceding claims, with a removal unit (118) for removing the rotor (102) from the rotary unit (110). Method (600) for producing a rotor bandage for a rotor (102), the method (600) comprising the following steps: providing (602) a band-shaped semi-finished product (106); binding (604) a free end (202) of the semi-finished product (106) to the rotor (102); and rotating (606) the rotor (102) to wrap the stock (106) around the rotor (102). Method (600) according to claim 12 , wherein the semi-finished product (106) is mechanically connected to the rotor (102) in the step (604) of connecting. Method (600) according to any one of Claims 12 until 13 , wherein in the step (606) of rotating the rotor (102) and a clamping element (200) of the manufacturing device (100) arranged on the rotor (102) is rotated. Method (600) according to any one of Claims 12 until 14 wherein in the rotating step (606) the rotor (102) is rotated at least one full revolution.

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