DE102006030335A1 - System, comprises drives provided on displaceable part, that is turntable or linear drive, which is respectively inductively coupled to one primary line in contact-less manner - Google Patents

Abstract

The system, comprises drives (2), which are provided on a displaceable part, that is a turntable (1) or a linear drive, which is respectively inductively coupled to one primary line in a contact-less manner. A primary conductor (4) is laid and kept stationary. The drives comprise the primary conductor in a recess such that they are movable along the primary conductor. An independent claim is also included for the drive for a system.

Description

The The invention relates to a system and a drive.

In industrial plants is known to provide drives from a network. These drives are usually by expensive connectors connected. Furthermore indicates the plant or machine for every drive a tee as an energy diversion. These tees are expensive to install and expensive, especially if they are in high protection for be used in the wet area or even the aseptic area have to.

Of the Invention is therefore based on the object, a simpler and cost-effective Cabling in drives and systems to create.

According to the invention Task in the system according to claim 1 and in the drive to solved the features specified in claim 22.

basics Features of the invention in the plant are that it comprises drives, on a movable part, in particular turntable or linear drive, contactless are supplied by means of respective inductive coupling to one or several primary conductors. The advantage here is that the wiring is quick and easy executable is and also clear is predictable. About that In addition, the plant can be used in wet areas and in aseptic areas, because the inductive coupling allows that the housing smoothly executable is. Furthermore is a wear-free transmission of energy present.

Further is an advantage that the supply to the drives potential-free is and the otherwise in plants existing potential carryover as well as radio interference suppression with disconnectors omitted. In addition, a reactive power compensation, especially in the drive, allows and thus the alternating current has smaller values, which is why smaller cable diameters are provided at the primary conductor and thus lower cabling costs can be achieved. disconnectors are unnecessary, since a separation by pulling out of the primary conductor is replaceable.

Especially is the primary conductor relocated stationary and is held. Thus, only a single inductive transition necessary. The drives comprise the primary conductor in a recess such that they are movable along the primary conductor.

Especially are holders for the primary conductor stationary provided such that the drives along the primary conductor are moved past.

at an alternative embodiment of the invention is the movable part by means of a rotary transformer with energy and / or Information contactless, in particular inductive, supplyable. Thus, the energy transfer location be performed on the movable part at an axially arbitrary position.

Especially is provided on the movable part of an electronics box. Besides that is from the movably arranged part of the rotary transformer, a primary conductor supplied, of which the drives each by means of one of them included secondary coil contactless be supplied with energy and / or information. In particular, includes the rotary transformer in the stationary Part of a primary winding and in the rotatably mounted part, a secondary winding, in particular for Supply of the secondary coils the drives inductively coupled primary conductor, which also with the drives is mitdrehbar.

at an advantageous embodiment of the embodiments is the part rotatably mounted or linearly movable. The advantage here is that the system can be executed as a turntable or as a linear drive.

at an advantageous embodiment provides the primary conductor the drives are serial. The advantage here is that no tees necessary are and therefore a very cost effective Cabling, in particular without connectors and the like, is executable.

at According to an advantageous embodiment of the primary conductor via stationary, at least one coil winding Comprehensive coil cores contactless or via conductor rail energized. An advantage of the contactless transmission, that the movable part turn in wet areas or aseptic Areas can be used and no wear occurs.

at According to an advantageous embodiment, the primary conductor is a closed loop laid. The advantage here is that it is particularly cost-effective and no start or end pieces necessary.

In an advantageous embodiment, at least one drive comprises an electric motor and an electronic circuit for supplying the electric motor, wherein the drive can be supplied inductively. The advantage here is that the drive is tight and high protection in a cost effective manner executable. The non-contact supply of the drive allows namely the housing simple and simple, especially without bumps or connector to carry out and thus allow a flow of water and to prevent the settling of solids. In particular, it can thus be used in wet areas and aseptic areas. The time which is necessary for the wiring is reducible with the invention.

at an advantageous embodiment, a primary conductor is provided on the drive, that an inductive coupling with a secondary winding encompassed by the drive is predictable. The advantage here is that no connector necessary is and thus the wiring is fast and easy executable. Furthermore Costs are saving.

at an advantageous embodiment is at least one primary conductor provided in a recess or a cable channel of the drive. The advantage here is that the cable laying very fast and easy to execute is and in addition a shedding Advantageously executable with a potting compound.

at An advantageous embodiment is at least one secondary winding around a U-shaped and / or E-shaped Core wrapped. The advantage here is that depending on the used Method and desired Efficiency the execution is selectable.

at In an advantageous embodiment, the primary conductors are at least partially potted and / or protected by a lid. It is advantageous that a particularly high degree of protection can be achieved.

at In an advantageous embodiment, the drive is tight, smooth on the outer surface and / or designed in high degree of protection. The advantage here is that the drive in particular for use in Wet areas and / or aseptic areas is providable.

at In an advantageous embodiment, the drive does not comprise a plug connector or other electrical connection devices on its exterior. From The advantage here is again that the drive in a simple manner tight and high degree of protection is executable.

basics Characteristics of the drive for a Attachment are that the case the drive on a first side of the movable part, in particular Turntable or linear drive, is provided and bearings of the output shaft, in particular rotor shaft, on a second side of the movable Part are provided, in particular on a device connected is with the movable part. Advantageously, thus, the drive very compact executable.

Especially on the output side is a flange, in particular comprising a centering flange, provided for connecting the drive to the movable part and / or a connectable with this device. Thus, the drive very precise relatively positionable.

Further Advantages emerge from the subclaims.

1

turntable

2

drive

3

camp

4

primary conductor

5

power supply with control electronics

20

electronics box for additional components

21

stationary part of the rotary transformer

22

swiveling mounted part of the rotary transformer

23

hollow shaft with primary conductor

30

Rotor shaft section

31

rotor with permanent magnets

32

flange

33

drilling

34

stator

35

U-shaped core

36

circuit board

37

centering

The invention will now be explained in more detail with reference to figures:
In the 1 is a rotatably mounted table, in particular turntable 1 , shown, the drives 2 includes for driving objects. The drives 2 are below the turntable connected to this releasably. The output shaft protrudes through the turntable 1 through and is on a device, not shown on the two camps 3 stored. This device is also with the turntable 1 connected. On the output side, the output shaft may for example be connected to a plate on which objects, such as workpieces or goods, can be placed. Thus, the objects are rotatable. A tool, such as an identifier or labeler, is provided at one location on the circumference and can manipulate the object as it rotates.

So important is that stock 3 the output shaft of the drive not within the housing of the drive but on the other side of the turntable 1 are supported. Thus, the drive is very compact executable.

Of the Drive is for example as a direct drive, so as an electric motor executable without gear. Thus, it is particularly compact executable and has a low moment of inertia on.

In 3 the inner structure of the drive is indicated in more detail, wherein the output area explode is shown like an anion. In 4 is an assembly schematically indicated. In this case, the rotor shaft section leads 30 through a recess of the table top to that area which the bearings 3 receives. The rotor 31 is provided with permanent magnets in the area of the stator 34 are provided. The associated electric motor is also hochpolig executable to generate a high torque.

Furthermore, inside the case 2 a board provided, which includes electronic components, in particular with inverter functionality. Also, around the U-shaped ferrite core 35 at least one secondary winding provided to supply the electronics on the board 36 with energy and information. The secondary coil is inductively coupled to the primary conductor 4 ,

An infeed feeds a medium-frequency, as constant as possible alternating current into the primary conductor 4 one. The advantage here is a frequency between 15 and 100 kHz.

The drive 2 is by means of the flange 32 and connectable by means of screws to recesses of the turntable, wherein the screws through the holes 33 are guided and screwed into threaded holes of the turntable.

By means of the centering flange 37 the drive can be precisely positioned relative to the bearings. The device for receiving the bearings is thus with a corresponding receptacle for the centering 37 equipped and thus allows exact relative positioning.

In Continuing education, the long screws are not in tapped holes screwed the turntable but passed through holes in the turntable and screwed into threaded holes of the device for receiving the bearing.

In 1 is the feed in the energy supply 5 integrated, which is additionally equipped with control electronics.

Important is with 1 in that the primary conductor is stationary, ie non-rotatable, and the drives with their U-shaped recess along the primary conductor 4 are movable. The recess resembles a slot.

In 2 an alternative embodiment is shown. Here is the primary conductor 24 arranged on the movable part. The energy is transmitted from the stationary side via a rotary transformer to the movably arranged parts. For this purpose, the rotary transformer comprises a stationary part 21 and a rotatably mounted part 22 , being in the stationary part 21 a primary coil and in the other part 22 includes a secondary coil.

In addition to energy transmitted without contact, data can also be transferred. On the rotatable part is an electronics box 20 provided for additional components, which includes additional electronic functions, which in particular signal processing functions can be realized. The primary conductor 23 is from the rotary transformer either directly or via the electronics box 20 , in particular through the hollow shaft 23 , led to the turntable and laid there annularly.

The drives are in turn inductively coupled as in 1 and for driving objects.

In further embodiments of the invention, the housing part comprises a core 35 with a U-shaped cross-section, around which a secondary winding is laid, which supplies the electronic circuit. Thus, the drive can be supplied without contact by means of the inductive coupling and thus galvanically isolated from the primary circuit. Disconnecting the supply to the drive is made possible by unwinding or deriving the loop of the primary conductor quickly and easily.

The Supply of the primary circuit is done by a device, the current source behavior with respect to the from her generated primary stream having.

In further embodiments of the invention Information is generated by modulating higher frequency signals transmit the primary conductor, by the electronic circuit means for demodulating the signals includes. For the exchange of information includes the electronic Circuit also means for modulating, which then also signals on the primary conductor can be modulated.

On In this way, the drive is contactless supplied. This has the consequence that a novel supply principle in industrial plants and / or machines is feasible. Because with the installation of the drives they no longer have to costly connectors electrically connected and wired but one is enough Wrapping of a primary conductor in the recess of the drive.

Besides that is a high degree of protection can be realized because connectors are omitted and thus the drive with its housing in cheaper Way is tight. Thus, the drive is particular with a smooth housing Can be produced and thus used in the aseptic area or wet area.

medium for potential separation and other separation devices are savings, because the housing wall thickness is dimensioned accordingly and the inductive coupling easily is separable.

The electronic circuit on the board 36 Of course, also includes the secondary-side means for inductive, ie non-contact energy transfer. In an advantageous embodiment, these means are advantageously passive components, ie capacitors and windings around coil cores. In the simplest embodiment, the transformer head is wound with a winding as secondary winding and a capacitor whose capacity is in resonance with the inductance of the winding, wherein the resonance frequency corresponds to the frequency of the alternating current in the primary conductor or deviates not more than 10%.

The Drives can be serially supplied with the primary conductor. The decoupling individual motors is possible without interrupting the power supply of the others got to. It is only necessary that the primary conductor conductor loop solved by the drive is, for example, by lifting the conductor loop from the depression.

at the wiring according to the invention omitted Tees.

Of the Drive is drawn in the figures as a rotor drive. In other embodiments of the invention the drive is designed as a linear drive and supplied inductively.

essential Advantage is in the invention that thus in the wet or aseptic Area or in the food and drink industry the plant in a particularly high degree of protection and easy to clean executable. Furthermore the primary conductor is simple and quickly installable and thus the manufacturing and maintenance costs the entire plant can be reduced.

Especially is the primary conductor laid in a closed track.

In further embodiments of the invention is the primary conductor wrapped around a drive several times instead of just through the slot guided.

In other embodiments of the invention a linearly movable table is provided instead of the turntable, under which the drives are positioned. The coil cores are then arranged along the moving path and provide the essentially linear installed primary conductor.

The method for non-contact energy transfer and the associated components are advantageously executable in advantageous embodiments according to the in the writings DE 100 53 373 . DE 103 12 284 . DE 103 12 792 . DE 103 39 340 . DE 103 38 852 . DE 103 49 242 . DE 103 44 144 . DE 4446 779 or also WO 92/17929 disclosed features. It is particularly advantageous to use a center frequency of about 15 to 100 kHz. The following on the transformer head, comprising the coil core, matching circuit is particularly advantageous passively executable, ie without electronic power semiconductors.

Claims (23)

Plant, characterized in that drives are supplied under a movable part, in particular rotary table or linear drive, contactless by means of respective inductive coupling to one or more primary conductors. Plant according to claim 1, characterized in that the primary conductor stationary is laid and held, Plant according to claim 2, characterized in that Drives the primary conductor in a recess such that they extend along the primary conductor are movable, Plant according to claim 2, characterized in that Mounts for the primary conductor stationary are provided so that the drives along the primary conductor are moved past. Plant according to claim 1, characterized in that the movable part by means of a rotary transformer with energy and / or Information contactless, in particular inductive, can be supplied, Plant according to claim 5, characterized in that on the movable part an electronics box is provided. Plant according to claim 5, characterized in that from the movably arranged part of the rotary transformer, a primary conductor is supplied, of which the drives each by means of a they included secondary coil contactless be supplied with energy and / or information. Plant according to claim 5, characterized in that the rotary transformer in the stationary Part of a primary winding and in the rotatably mounted part comprises a secondary winding, in particular to supply the inductive with the secondary coils of the drives coupled primary conductor, which is also mitdrehbar with the drives. Plant according to at least one of the preceding Claims, characterized in that the part is rotatably mounted or linear is movable. Plant according to at least one of the preceding Claims, characterized in that the primary conductor serially drives provided. Plant according to at least one of the preceding Claims, characterized in that a drive at least one to a Coil wound coil winding comprises and contactless or over Conductor line is supplied with energy. Plant according to at least one of the preceding Claims, characterized in that the primary conductor as a closed loop is relocated. Plant according to at least one of the preceding Claims, characterized in that at least one drive an electric motor and electronic circuit for supplying the electric motor, wherein the drive is supplied inductively. Plant according to at least one of the preceding Claims, characterized in that a primary conductor is provided on the drive in this way, that an inductive coupling with a secondary winding encompassed by the drive is predictable. Plant according to at least one of the preceding Claims, characterized in that at least one primary conductor in a recess, Well, slot or a cable channel of the drive provided is. Plant according to at least one of the preceding Claims, characterized in that at least one secondary winding around a U-shaped and / or E-shaped Core is wound. Plant according to at least one of the preceding Claims, characterized in that the primary conductors at least partially potted and / or protected by a lid. Plant according to at least one of the preceding Claims, characterized in that at least one drive is tight, smooth on the outer surface and / or is designed in a high degree of protection, in particular for use in wet areas and / or aseptic areas. Plant according to at least one of the preceding Claims, characterized in that the drive is not a connector or includes other electrical connection devices on its exterior. Plant according to at least one of the preceding Claims, characterized in that the drive is designed such that Information by modulating higher frequency signals the primary conductor transferable is. Plant according to at least one of the preceding Claims, characterized in that the drives comprise an electric motor and an electronic circuit for their supply, in particular with inverter functionality, include, wherein the secondary coil is included, about which the drive is supplied. Drive for a plant according to at least one of the preceding claims, characterized characterized in that the housing the drive on a first side of the movable part, in particular turntable or linear drive, is provided and bearing the output shaft, in particular Rotor shaft, are provided on a second side of the movable part, in particular on a device which is connected to the movable Part. Drive after at least one of the preceding Claims, characterized in that the output side, a flange, in particular comprising a centering flange, is provided for connecting the Drive with the movable part and / or connectable with this Contraption.