WO2013017305A2

WO2013017305A2 - Friction motor spindle and method for operation

Info

Publication number: WO2013017305A2
Application number: PCT/EP2012/059822
Authority: WO
Inventors: Günter Schmid
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2011-08-04
Filing date: 2012-05-25
Publication date: 2013-02-07
Also published as: CN103917702B; WO2013017305A3; IN2014DN01627A; CN103917702A; EP2739773A2; DE102011080416A1

Abstract

The invention relates to a friction motor spindle (10) having a housing (15) and a spindle (11), and having a bearing unit (13), which is provided for bearing the spindle (11), and also an electromotive drive (16) which is provided for directly driving the spindle (11), wherein a regulator assembly (19) for operating the electromotive drive (16) is arranged in or on the housing (15) of the friction motor spindle (10), and to a method for operating a friction motor spindle system comprising at least two friction motor spindles (10), in which system, according to the invention, at least one friction motor spindle (10) controls or regulates another friction motor spindle (10).

Description

Name of the invention

Friction motor spindle and method of operation

The invention relates to a friction motor spindle with a housing, a spindle and a storage unit provided for supporting the bearing unit and provided for direct drive of the spindle electric motor drive. Furthermore, the invention relates to a method for operating a Friktions- motor spindle system.

Friction motor spindles are used for texturing smooth, untreated filament or yarn in textile machines. In general, three friction motor spindles are combined to form a texturing unit or friction motor spindle system, wherein the friction motor spindles are arranged in the form of an isosceles triangle to each other. The system applies a rotation to the filament through disc-shaped friction elements, which is pulled through between the friction motor spindles. The filament is twisted in this manner, or textured, to increase the elastic extensibility of the original, smooth filament. Friction motor spindles are known, for example, from DE 10 2005 023 928 A1 or EP 0 828 872 B1. The regulators and power sensors are connected via lines to the electric motor drives and sensors of the spindles, they are usually arranged together in a control cabinet for a textile machine. A textile machine typically has a number of over 200 friction motor spindle systems.

The invention has for its object to provide suitable for textile systems, having an electric direct drive, friction motor spindles for texturing filaments and yarns and specify methods for their operation, which are characterized by a high speed (stability, energy-efficient operation and low cabling.

This object is achieved on the basis of the preamble of claim 1 in conjunction with its characterizing features. The subsequent dependent Claims give each advantageous embodiments of the invention again. A friction motor spindle has a housing and a spindle, wherein a bearing unit is provided for supporting the spindle. Furthermore, the friction motor spindle has an electric motor drive provided for the direct drive of the spindle. According to the invention, the friction motor spindle has a regulator assembly. which is provided for the operation of the electromotive drive and integrated in the friction motor spindle. The controller module is assigned to the friction motor spindle. It can be arranged in or on a housing of the friction motor spindle. For the textile plant results in a decentralized arrangement of the controller assemblies for the friction motor spindle.

The construction according to the invention is particularly _{advantageous'} because compared to the conventional use of one or more central control points, for example, is significantly reduced in a control system of the textile, the wiring and simplified. Until now it was necessary to lay a separate power cable and a separate sensor cable from the friction motor spindle to the control cabinet for each friction motor spindle. This is in addition to the high installation costs, especially due to the large number of possible sources of interference or faulty, to the sources of interference and impairment of the electromagnetic compatibility must be counted, as it can come in the large number of long and parallel cables to an undesirable crosstalk. In particular, the transmissions of the sensor signals are susceptible to interference. Furthermore, voltage drops and signal reflections can occur due to the large cable lengths. Overall, these factors affect the controller behavior and thus the speed stability of the friction motor spindle negative

According to the invention, these disadvantages can no longer occur due to the arrangement of a regulator assembly directly in the friction motor spindle in this form, which results in a high speed stability and a significantly reduced cabling effort. The necessary electrical power for the operation of the electric motor drive can be made available to the controller assembly via the Anschtuss to a power grid to which a plurality of friction motor spindle can be connected simultaneously. The installation is due to the possible The use of distributors and the free allocation to the laying of power cables, as described above, very simple.

Under electromotive drive are all known types of electric motor

to understand which are suitable to produce a rotational movement of an axis, such. Stepper motors, reluctance motors, synchronous and asynchronous motors and electronically commutated DC motors, also known as brushless DC motors. Preferably, the controller assembly is provided to perform a speed control or a speed control of the electric motor drive. The necessary electrical and electronic components are summarized in the controller module. This also includes possible components which are set up to read and evaluate sensor signals from sensors on or in the friction motor spindle. Furthermore, the controller module may have components that are suitable for frequency control or commutation. The controller module is not necessarily a spatially connected module, for example, a spatial separation of individual components of the controller assembly in the range of the corresponding friction motor spindle is possible. The possible control quality of the controller module is significantly positively influenced by the arrangement of the controller module due to the very short cable paths.

In a further embodiment, the control assembly of a friction motor spindle is provided to operate at least one further friction motor spindle. Since five friction motor spindles are generally combined to form a friction motor spindles system in this embodiment, the advantages of the short power paths and the limited cabling effort are retained, whereas the combination of the regulator assemblies has advantages, such as e.g. a simplified control of the entire textile machine and reduced costs.

A preferred embodiment of the invention provides that the regulator assembly of a friction motor spindle has at least one electronic interface. This interface is set up to accept the speed specifications for the textile machine and, for example, send any faults to the central system control. Furthermore, further set states of the central system control of the textile machine can be transmitted to the controller module via the electronic interface, such as plant stop, Plant start and various other operating states. The interface can be a connection to a digital bus system, which allows the digital allocation of the friction motor spindle in a central system for system control, eg a programmable logic controller PLC. The connection and the installation of a friction motor spindle are thereby significantly facilitated, as here too, similar to the power grid, distributors can be used. In addition, digital transmission protocols ensure error-free data transmission via the bus system.

Preferably, the controller assembly of a friction motor spindle is provided to synchronize the speed with at least one further friction motor spindle. On the one hand, this can be achieved by combining, as shown above, a controller assembly for the operation of a plurality of friction motor spindles, especially when combined with a friction motor spindle system, all the necessary information and intervention possibilities in a controller assembly, whereby the synchronization can be achieved. On the other hand, a synchronization of a plurality of friction motor spindles, all of which have a controller module, can be achieved by using the central bus system or data network for the purpose of communicating the controller modules with each other for synchronization. In addition, another electronic interface of the controller module can be used, which is not connected to the central data bus of the textile machine. but only with the friction motor spindles of the corresponding system with which a synchronization is to take place. Overall, the use of an electronic interface in the regulator assembly according to the invention, the synchronization via a data connection of a larger number or old friction motor spindles a textile machine possible.

Preferably, the regulator assembly has a low voltage power regulator. The power requirement of the electromotive drive is thus controlled by a controller or power divider covered, which can typically be operated with a supply voltage of 24 V DC. Furthermore, all supply voltages in the range of low voltage are suitable for operating the low-voltage regulator. The use of a low-voltage regulator results in the simplification of the construction and in the connection technology, as well as other cost advantages due to the reduced safety requirements.

A further embodiment provides that for a greater power requirement or for other reasons, a high-voltage regulator is used in the control module. The supply voltage is no longer harmless to humans low voltage, here typically in the range of 200 V to 400 V. A high-voltage regulator requires in contrast to a low-voltage regulator of a higher installation effort, the potential power transmission is greater due to the higher voltages at comparable Kabelquerschnttten larger.

The regulator assembly of a friction motor spindle according to the invention preferably has at least one microcontroller. The microcontroller can be used to read out and process sensor data, to process data from an electronic interface and to implement the controller or the control algorithm. The microcontroller controls appropriate control variables _» which are implemented by the power electronics for the operation of an electric motor drive.

Furthermore, it is provided that the friction motor spindle has a rotation angle position sensor which, as a sensor, determines the necessary information about the actual state of the spindle for the controller module. This sensor is preferably at least one Hall sensor, which can serve as a non-contact sensor for position and speed detection. Furthermore, when using an electronically commutated electromotive drive, the angular position transmitter can be used as the basis for the commutation

Furthermore, the object of the invention starting from the preamble of claim 10 in conjunction with its characteristic features getosto. A method of operating a friction motor spindle system controls or regulates a plurality of » iypically three friction motor spindles. A regulator assembly, which is arranged on or in a housing of a friction motor spindle controls or regulates at least one further, typically two further friction motor spindles. The regulation takes place by transmission of electrical signals and / or by transmission of the electric power for the electromotive drive. The method is characterized by a particularly high control quality, which is crucial for the quality and quality of the texturing, and easy controllability of the textile machine. Furthermore, the method of operation includes the possibility that the control is carried out separately in each friction motor spindle, and the necessary synchronization is effected by a data transmission between the regulator assemblies of the friction motor spindles.

Further features of the invention will become apparent from the following description of drawings in which preferred Ausführungsbeispieie the invention are shown.

In the figures show:

Fig. 1 sectional view of a friction motor spindle with integrated regulator assembly;

Fig. 2 Schematic representation of a regulator assembly; and

Figure 3 Schematic representation of the synchronization of multiple friction motor spindles.

In Fig. 1, an embodiment of a friction motor spindle 10 according to the invention is shown. On the spindle 1 1, the texturizing 12 are arranged, the number of which may be different than shown here. The bearing unit 13 forms a double-row, preloaded roller bearing, which takes over the storage of the spindle 1 1 and the electromotive drive 16. In alternative embodiments, a variety of types of bearings are possible. The rolling elements ensure low-friction roability between the outer ring 14 and the spindle 11. The outer ring 14 of Positional density 13 is enclosed by the housing 15 of the friction motor spindle 10. The electromotive drive 16 generates the rotational movement of the spindle 1 1, on which the rotor 17 of the electromotive drive 16 is glued or pressed, resulting in a direct drive of the spindle 1 1 results. The stator 18 of the electromotive drive 16 is arranged in the housing 15. The regulator assembly 19 is disposed in the housing 15 of the friction motor spindle 10. The regulator assembly 19 consists of various electrical and electronic components 20, which are connected via short conduction paths to the stator 18 of the electromotive drive 16, Wertherhin is a connection to the rotation angle position sensor 22, in this embodiment, a Hall sensor, available with the aid of a phase-correct commutation or Energization of the stator 18 and a control is done. The housing 15 is closed with a cover 21, so that the bearing unit 13, the e- lektromotorische drive 16 and the controller assembly 19 are shielded against harmful external influences and contact. To connect the friction motor spindle 10 to the power network 24 and the data network 32 (see FIGS. 2 and 3), plug connections 23 are made in the housing 15 or in the cover 21. In an alternative embodiment, corresponding cables are routed through the housing or through the lid 21.

Fig. 2 shows a schematic representation of a possible embodiment of a governing assembly 19 which is arranged according to the invention in or on the friction motor spindle. The regulator assembly 19 has several connections to external components 16, 24, 29, 32. The power supply 24 is connected to a voltage converter 25. The voltage converter 25 converts on the one hand, the voltage of the power supply 24 for electronic components of the Governing assembly 19 and provides them as an internal supply voltage 26 for electronic components available, on the other hand, the voltage of the power supply 24 of the power electronics 30 is provided either directly or converted. The power electronics 30 may include transistors, thyristors and triacs that drive the windings of the electromotive drive.

The microcontroller 27 executes the control based on the control algorithms stored on it. Furthermore, various presets, control limits and Parameter be stored on the microcontroller 27 or an additional memory unit in the controller module. For the control, the setpoint values from the interface module 31, which establishes the connection to the data network 32, are compared with the actual variables from the sensor operating group 28, which establishes the connection with various sensors. On the basis of these two variables, a control signal is output by the microcontroller 27, which is transmitted to the power electronics 30. The power electronics 30 in turn operate the electric motor drive 16.

3 shows various possible embodiments for the control or synchronization of a plurality of friction motor spindles 10.

In the embodiment of Fig. 3a, three friction motor spindles 10 are shown, of which only one has the regulator assembly 19 according to the invention. The corresponding regulator assembly 19 assumes in this embodiment the reading of the sensors 29 and the driving of the electromotive drives 16 of two further friction motor spindles 10. The three friction motor spindles 10 shown preferably form a friction motor spindle system and are therefore spatially very close to each other, so that the power cable for the electromotive drives 16 and the cables for the sensor 29 can be correspondingly short. It is in the embodiment of Fig. 3a, only an inventive friction spindle motor 10 requires _"in the two other shown Friction motor spindles 10 can thus be omitted, the controller module 19, resulting in a cost advantage.

In the embodiment of Fig. 3b, three friction motor spindles 10 according to the invention are shown, which may represent a friction spindle system. Each friction motor spindle 10 is connected to the power grid 24 and the data network 32. The control module 19 of each friction motor spindle 10 regulates or controls the electromotive drive 16 with the aid of the sensor system 22. The synchronization takes place via the interface module 28 through the central data network 32 of the textile machine. In a further exemplary embodiment in FIG. 3c, three friction motor spindles 10 according to the invention are shown, wherein all friction motor spindles 10 have a connection to the power network 24 but only one friction motor spindle 10 via a connection to the data network 32. The other two illustrated controller assemblies 19 of the friction motor spindles 10 are connected to each other via a further electronic interface by a data link 33. The data connection 33 is preferably used for the synchronization of the friction motor spindles. In an alternative embodiment, the controller executes only one controller assembly 19 of the friction motor spindles 10, preferably the friction motor spindle 10 with the connection to the data network 32, and sends the control commands via the data link 33, via which also transmit the sensor data of the sensor 29 , Different gradations between these two embodiments are possible.

In the exemplary embodiments of FIGS. 3b and 3c, it is possible to use identically constructed friction motor spindles according to the invention. In the embodiment of Fig. 3b is easier to implement, to control each friction motor spindle 10 via the central control system of the textile machine. The embodiment of Fig. 3c allows further shortening of the required data cable, since the way to the nearest distributor of the data network 32 only for a friction motor spindle 10 must be placed. The other two friction motor spindles can be connected via short patch cables.

LIST OF REFERENCE NUMBERS

Friction motor spindle

spindle

Texturierscheibe

storage unit

outer ring

casing

electric motor drive

rotor

stator

controller module

electrical and electronic components

cover

Angular position encoder

plug connections

power grid

DC converter

internal supply voltage

microcontroller

Sensor operating group

sensors

power electronics

Interface Unit

data network

Data Connection

Claims

claims

1, friction motor spindle. (10) with a spindle (11), and a storage unit for the spindle (11) provided bearing unit (13), as well as for directly driving the spindle (1 1) provided electromotive drive (18), characterized in that a governing assembly (19 ) is integrated into the functional motor spindle (10) for operating the electric motor drive (16).

2 friction motor spindle (10) according to claim 1, characterized in that the regulator assembly (19) is provided for a speed control or -control of the e- lektromotorischen drive (18),

3. friction motor spindle (10) according to any one of claims 1 or 2, characterized in that the regulator assembly (19) for operating at least one eiger Friktions Motorpindei (10) is provided.

4. friction motor spindle (10) according to one of claims 1 to 3, characterized in that the regulator assembly (19) at least one electronic

Interface has.

5. friction motor spindle (10) according to one of claims 1 to 4, characterized in that the regulator assembly (19) is provided, the speed of the Friktions-Motorpindei (10) with the speed of at least one further Friktions-Motorpindei (10) synchronize.

6 friction motor spindle (10) according to one of claims 1 to 5, characterized in that the regulator assembly (19) has at least one low-voltage regulator.

7 friction motor spindle (10) according to one of claims 1 to 6, characterized in that the regulator assembly (19) has at least one high-voltage regulator.

8, friction motor spindle (10) according to one of claims 1 to 7, characterized in that the regulator assembly (19) has at least one microcontroller (27).

9. friction motor spindle (10) according to one of claims 1 to 8, characterized in that the friction motor spindle (10) a Drehwinkelstel- lungsgeber (22). preferably a halide sensor.

10 .. A method for operating a friction motor spindle system comprising at least two friction motor spindles (10), characterized in that a friction motor spindle (10) according to at least one of claims 1 to 9 at least one other friction motor spindle (10) controls or regulates