EP2110470B1 - Spinning machine with individual spindle drive - Google Patents

Description

The invention relates to a spinning or twisting machine with single spindle drive, comprising a machine frame which receives a plurality of jobs, the control technology divided into several sections, each section includes several jobs, and per workstation provided a spindle unit with a spindle and a variable speed spindle drive is, and per spindle unit a spindle drive electronics unit is provided, further comprising a machine control unit for controlling the spindles and a section electronics unit per section, which are connected via a data line to the machine control unit, wherein in each case a section electronics unit a plurality of spindle drive electronics units are connected via a data line, which can be controlled by the machine control unit via their associated section electronics unit.

Spinning or twisting machines with a variety of jobs with single spindle drive have a complex control and wiring. So z. B. the drive motors of the spindles are individually controlled. For this purpose, each spindle needs its own Spinnstellenelektronik, which can communicate directly or indirectly via a section electronics with the machine control. The Spinnstellenelektronik is located together with the spindle motor in a common unit, which in turn form the spindle unit together with the spindle. In this context, it must be remembered that the drive motors, together with the associated drive electronics, also called drivers, are produced as a physical unit, delivered and installed in the textile machine. The drive motor and the associated drive electronics are regarded as an inseparable physical unit, since their individual elements such as the drive motor and the drive electronics are not suitable on their own.

It has been found that the conventional design of spinning machines with single spindle drive with a direct control of the individual spindles by the machine control control technology but also in terms of cabling and assembly costs very elaborate and expensive. After all, a large spinning machine can comprise up to 1,600 spindles. It has therefore begun to develop concepts according to which the spindles are summarized in terms of control technology sections. The spindle drive electronics units of the spindle drives of a section communicate no longer directly with the machine control, but with a section electronics with their own intelligence. The machine control, on the other hand, no longer controls the spindles directly, but via the higher-level section electronics. It is then up to the section electronics to control the spindle drives assigned to them based on the commands received from the machine control.

That's how it describes EP-A-0 389 849 a control system for a ring spinning machine with a plurality of spinning stations, which are sections monitored and controlled together. The spinning station is assigned to autonomous execution, at least part of the operating functions, a spindle drive electronics. In each case a plurality of spinning stations comprehensive section is assigned to the spindle drive electronics superior section electronics with their own intelligence, which in turn is connected to a further provided in a higher hierarchical level machine control. The section electronics is for autonomous execution least of a part of the operating functions, such. B. yarn break detection designed.

Although this concept has brought significant improvement, at least in the control processes of a spinning machine, the constructive implementation of this advantageous control concept still entails considerable disadvantages. Thus, the production, assembly and wiring costs of the corresponding spinning machine continue to be very large.

The high cabling effort is due to the fact that the section electronics connected via a data bus with the machine control and the provided on the spindle drives Spinnstellenelektronik in turn each individually or via a bus with the section electronics is wired. In addition to the cabling effort for the data lines also comes the wiring effort to supply the spindle drives with electrical energy added. In addition, the section electronics and the spindle drive electronics must be supplied with electrical energy via supply lines. Since the electronics have a different supply voltage than the spindle drives, a separate wiring must also be made.

In addition to the high and costly wiring, which must be handled by trained and correspondingly expensive specialist personnel usually by hand, also make the production costs for the manufactured as separate modules section electronics and spindle drive electronics units and for the wiring.

It is therefore an object of the present invention to propose a new construction concept for the organization of the control electronics and energy supply in a spinning or twisting machine in order to eliminate or at least substantially reduce the abovementioned disadvantages.

The object is achieved according to the invention in that a plurality of spindle drive electronics units of a section and the section electronics unit are arranged on a common circuit board, and the spindle drive electronics units are connected via data lines in the form of tracks to the section electronics unit and the section electronics Unit is connected via a connection interface and data line to the machine control unit, and the spindle drive electronics units is connected via connecting interfaces and feed lines to the spindle drives.

The spinning machine may be a ring spinning, loop spinning, pot spinning or hopper spinning machine. The spinning or twisting machine can be formed on one or two sides. Two-sided means that in machine cross-sectional view in a mirror-image arrangement on two sides of spinning or twisting points are arranged. In the case of single-sided machines, jobs are correspondingly arranged on only one side. The term "section" in this application is a control-technical section with a plurality of workstations, ie spinning or twisting stations, to understand their spindle drive electronics units is controlled or managed via a common section electronics unit. Such a section may be limited to one machine side and may include a plurality of adjacent workstations. However, said section may also be cross-machine-side and comprise a plurality of both sides of the spinning or twisting machine arranged, and on the associated machine side respectively adjacent spinning or twisting points.

A section can z. B. 24 jobs, d. H. Spindle drive motors, on one side of the machine. In a preferred further development of the invention, a section contains exactly one printed circuit board with the section electronics unit and the spindle drive electronics units of all workstations or spindle drives assigned to this section.

Under printed circuit board, also called printed circuit board or board, a carrier made of insulating material, in particular plastic, with fixed on the carrier or firmly adhering conductive connections, also called strip conductors to be understood. A trace is in the form of an electrically conductive layer on the carrier. This layer of conductive material is usually relatively thin. The production of the conductor tracks can be done by an etching or printing process.

The circuit board is used for mechanical attachment of the section electronics unit and the spindle drive electronics units and the electrical connection (data or signal lines) of these electronic components with each other via interconnects for signal or data exchange. In a development of the invention, not only are the data or signal connections between the section electronics and the spindle electronics in the form of strip conductors, but also the supply lines of the section electronics and / or the spindle drive electronics with electrical energy are present as strip conductors on the carrier. Furthermore, the supply lines to the power stages of the spindle drive electronics units for the eventual supply of the spindle drives with electrical energy are preferably also located as conductor tracks on the carrier in front. The mechanical attachment of the electronic components can, for. B. via electrically conductive connectors, such as pin and / or solder joints.

The machine control preferably includes a central control unit, e.g. B. a programmable logic controller (PLC), with a main processor (CPU), by means of which the spinning machine is controlled. In connection with the existing control concept, which knows different levels of hierarchy, the machine control is to be regarded as a so-called master. The machine control is preferably designed for at least a part of the operating functions for a control intervention in the work stations, preferably via the respective section electronics unit and the associated spindle drive electronics unit. So z. For example, the machine start-up (eg, the piecing process) and the scheduled machine shutdown (eg, the spinning process) are controlled by the machine control.

The section electronics unit includes a controller, which preferably allows the autonomous exercise of operational functions by the section electronics. A controller is an electronic unit with integrated circuits that controls, regulates or switches various processes. Furthermore, in a sense, the controller may also assist the machine control CPU in accomplishing its task. The controller also serves to control the data traffic between the machine control and the spindle drive electronics. The controller preferably includes a processor, i. an arithmetic unit. The controller is preferably a microcontroller. Since the boundary between controller and microprocessor is sometimes unclear, the term controller should also include a microprocessor. It is also conceivable that the controller is a CPLD (Complex Programmable Logic Device). With a CPLD, however, the functionality at the level of section electronics is very limited, which is why a CPLD is rather less suitable.

The controller is preferably connected to the communication interface via an optocoupler. The optocoupler is an opto-electronic composite component, which serves the transmission of an electrical signal with simultaneous galvanic isolation (electrical insulation) between input and output circuit.

The spindle drive electronics unit is used for direct control of the associated spindle drive motor. It includes a controller, which preferably the autonomous exercise of operating functions, such. B. the control or circuit of the power level, the measurement of power or power consumption by the spindle drive or the management of an external display or a manual switch perceives. A controller is an electronic unit with integrated circuits that controls, regulates or switches various processes. The controller preferably includes a processor, i. an arithmetic unit. The controller is preferably a microcontroller. Since the boundary between controller and microprocessor is sometimes unclear, the term controller should also include a microprocessor. It is also conceivable that the controller is a CPLD (Complex Programmable Logic Device). However, with a CPLD, the functionality at the level of spindle drive electronics is very limited, which is why a CPLD is rather less suitable.

Furthermore, the spindle drive electronics unit includes a power stage, also called power driver or power stage, via which the power supply of the spindle drive takes place. The power driver is a device that is connected between the controller (controller) and the load (spindle drive) to avoid a direct load on the controller due to the current flow of the consumer and to adjust the voltage level. For this purpose, the operating voltage of the load is applied to the power driver and the controller switches on the input side with predictable current flow, this operating voltage to the output side of the power driver. Consequently, the power supply of the associated spindle motors is switched via the power stage.

Several spindle drive electronics units may also be physically supported on a common carrier, e.g. As chip, be summarized, but each spindle drive electronics unit maintains its own controller and its own power level and its own interfaces.

According to a preferred development of the invention, it is provided that the spindle drive assigned to a respective workstation is connected via the associated spindle drive electronics unit or the parent section electronics unit electronically and conveniently by means of a manual switch can be switched off. In principle, however, a respective spinning or twisting point can also be switched off by the master, which is particularly expedient in the case of certain malfunctions.

For autonomous decommissioning or activation of a job contains the spindle drive electronics unit interface electronics, in particular a digital I / O (input / output) interface, via which z. B. a manual switching device for manually switching on and off of the spindle drive on site, d. H. can be connected directly to the spinning station. The manual switching device with the appropriate ON / OFF input function is appropriate at the spinning station, z. B. arranged at the spindle bank next to the spindle. In this way, the spinning staff, the spindle z. B. after a corrected thread break on site manually turn on or off in a detected fault. The control of the spindle drive via the manual switching device thus takes place autonomously by the machine control, and is carried out via the spindle drive electronics unit and / or optionally via the section electronics unit.

Furthermore, the interface electronics of the spindle drive electronics unit can also be used to connect a display (workstation display), in particular a fault indicator. The display, which may be eg a visual display (light), z. B. indicate a thread break, a stationary spindle, a creep spindle or other malfunction at the workplace. The display can also be actuated autonomously by the machine control by the spindle drive electronics unit and / or optionally by the section electronics unit. Furthermore, in addition or as an alternative thereto, a section display connected to the section electronics unit may be provided, which z. B. indicates the fault at one of the sections associated jobs. The section display is arranged accordingly in the area of the section. It can be provided that the aforementioned displays can also be controlled via the machine control.
Furthermore, a thread monitor and / or a Luntenstoppeinrichtung connected to the associated spindle drive electronics unit or the section electronics unit be. If z. B. a job because of a fault by the section or the Spindelantriebselektronik unit off, so this unit can cause the Luntenstoppeinrichtung also a Luntenstopp.

With regard to further explanations concerning the exercise of various operating functions by the machine control, section control and spindle drive control and their division of tasks is on the EP-A-0 389 849 directed.

The spindle drive is an electric motor, in particular a BLDC motor (brushless DC motor). However, the electric motor can also be a synchronous or asynchronous motor. The power level can according to the type of motor used a converter, for. As a frequency converter include.

From the machine control, a data or signal line leads to the section electronics units and connects them with the machine control. The data line is preferably a data bus. The section electronics units are advantageously interconnected by the data bus, to which the machine control has access. The data bus expediently extends along the respective textile machine along the two sides of the machine. The data bus can split on the two sides of a machine left and right branch with z. B. each have a terminating resistor. The two branches converge in the machine control. However, the data bus can also be designed as a ring bus or as a star bus. The data bus can be a serial or parallel bus. The data bus may be formed as an electrical conductor, as a light guide or a combination of both.

In addition to the data bus with its z. B. electrical conductors for the ordinary communication may be provided between the level of machine control and the level of section electronics units in addition an optical or electrical conductor for the rapid transmission of digital signals. This additional conductor can be designed separately or integrated in the data bus. However, the additional conductor preferably leads via a separate input (digital I / O) to the section electronics unit. This additional signal line preferably provides a direct hardware connection between the machine control or a power failure sensor system and the section electronics units or directly to the spindle drive electronics units.

This additional signal line is used for. B. the immediate transmission of control commands in case of power failure in order to switch the spindle drive motors to generator operation. This approach is based on the idea known per se that, in the event of a power failure, the spindle drive or drives are switched over to generator operation so that the faster-running drafting system drives in coordination with the slowing down spindles can be shut down in a controlled manner by means of the generator-generated power. Without this regenerative regenerative feed the drafting rollers would leak relative to the spindles relatively quickly and uncontrollably, which would lead to thread breakages. Further details in relation to the concept behind the generator operation of the spindle drives in the event of a power failure can be B. the DE-C-43 120 23 or the EP-B-451 534 be removed.

Basically, the conversion to generator operation should take place as quickly as possible. However, the path of the control signal over the ordinary communication line takes a relatively long time until it has arrived at its destination and the control command can be implemented accordingly. With a digital signal line of the type described, the control signal can be fed from the machine control or even directly from a power failure sensor system to the section electronics unit, which then causes the switch to a spindle drive recuperation.

With regard to an optimal information flow and a reduction of the cabling effort, it is expedient if all data from and to the workstations or their spindle drive electronics units can be controlled and concentrated by the associated section electronics unit. This also means that the circuit board has exclusively a connection interface for the data and signal exchange with the machine control.

The workstations may contain sensors or other means for determining certain parameters at the work sites. So z. B. the current or power consumption by the spindle drive or the spindle speed by the spindle drive electronics, possibly by means of sensors, are detected. Information about yarn breaks or yarn tension can be determined from these measured data. The relevant spindle or the associated drive can be stopped autonomously at a yarn breakage by the spindle drive or section electronics unit.

At least a part of, for. B. from the sensors of the workstations, detected signals can be supplied via the respective spindle drive electronics units and the parent section electronics unit for evaluation and / or higher-level display of the machine control unit. The machine control unit for such evaluation or display, for example, a yarn breakage, a manual shutdown, the spindle speed and / or other dergl. Representing signals supplied.

The spinning or twisting machine can be structurally constructed in sections by the modular principle, wherein such a construction section, hereinafter simply called machine section, a plurality of spinning or twisting stations are assigned. The section division of the machine allows a modular design of the spinning or twisting machine. The spinning or twisting machine is constructed in this case of juxtaposed section. Of course, the machine frame also has a corresponding sectional construction. The design-technical section construction does not have to be in accordance with the control technology section design as described above. Advantageously, however, the control technology summary of jobs to sections and the corresponding assignment of a respective section electronics unit by the production-related konstruktiove subdivision of the machine in machine sections, ie by the structural section construction, given. This means that z. B. one or more summarized, in particular two summarized, control engineering sections with respect to the assignment of jobs agree with a machine section.

This can be z. B. mean that a machine section, which includes jobs from both sides of the machine known to be associated with two printed circuit boards each having a section electronics unit, wherein the two circuit boards cover each half of the jobs of this machine section by each printed circuit board is associated with the jobs of a machine side control technology (See also the embodiment according to Fig. 3b ). However, it can also be provided per machine section, only one printed circuit board with a section electronics unit, which are associated with control of the jobs of both sides of the machine control (see also the embodiment of FIG Fig. 3a ). According to the above-mentioned embodiments are on a circuit board each spindle drive electronics units for jobs from only one side of the machine or for jobs from both sides of the machine.

The use of such a modular principle allows pre-assembly of machine sections in the factory, which significantly reduces assembly times in spinning operation.

The power supply of the spindle drives is also preferably via the circuit board. In European patent application no. 07021866.4 a concept for supplying the spindle drive motors of a spinning machine with power is described. In a preferred embodiment of the invention, the power supply of the spindle drive motors based on the concept described in this application. However, said power supply concept according to the cited patent application has something to do only indirectly with the present invention.

The power supply of the spindle drives, in particular when BLDC spindle motors are used, preferably takes place via a 270 V (volt) DC voltage source (eg via a DC bus) according to the supply concept according to the cited European patent application no. 07021866.4 , The DC bus here consists of a first DC voltage rail with the voltage U1 (eg +270 V), a second DC voltage rail with the voltage U2 (eg -270 V) and a third DC voltage rail (eg 0 V). A first DC voltage network is formed by the first and third DC voltage rail and a second DC voltage network is formed by the second and third DC voltage rail. The first and second DC voltage supply the DC voltage of the voltage of 270 V. From the first and second DC voltage rail further, a third DC voltage network with a DC voltage of 540 V can be formed. For further explanations of the mentioned DC networks, turn to the europ. Patent application no. 07021866.4 directed.

Now relate the power levels of the spindle drive electronics units their energy from a DC bus described above, it is advantageous to ensure that the successive power levels within a circuit board, but also over all successively arranged in the machine longitudinal direction PCB away always alternately from the first and second Net be fed. In this way, the symmetry of the power supply is ensured and the supply system runs stable. The printed circuit board is equipped for the alternate supply of the individual power stages of the first and second DC voltage network according to connection interfaces and tracks.

For the above reason, it is also preferable that the section electronics units, if not already supplied with electrical power via the data bus connection, and in particular the spindle drive electronics units, be 540 V across the third DC network and not the first or second DC network to be fed by 270V. Although the latter is also possible, it disturbs the supply symmetry and can therefore make the supply system unstable. For a supply from the third DC network, the converter may need to be assigned a transformer.

Basically, depending on the spindle drives used another power source, eg. B an alternating voltage source can be selected. The power levels of the spindle drive electronics units are connected via corresponding line connections to a voltage source. The feeders are on the circuit board, as already mentioned, preferably designed as conductor tracks. The printed circuit board is preferably connected to an external voltage source via exclusively a connection interface for the power supply of the power stages or the spindle drives. When feeding the power stage with changing voltage source according to the above statements, the circuit board is connected via exclusively two connection interfaces for the power supply of the power stages or the spindle drives with two external voltage sources (first and second DC voltage network). Of course, the circuit board may theoretically have a separate connection interface to an external power source for each power stage. However, this solution is not preferred for economic reasons.

1. a. die Leiterplatte über, bevorzugt ausschliesslich, eine weitere Verbindungsschnittstelle für die Leistungsversorgung der Elektronikbaugruppen mit einer externen Spannungsquelle verbunden sein (z. B. drittes Gleichspannungsnetz); oder kann
2. b. die Leistungsversorgung der Elektronikbaugruppe über die oben beschriebene Spannungsversorgung für die Leistungsstufen (z. B. erstes oder zweites Gleichspannungsnetz) erfolgen.

The section electronics units and / or spindle drive electronics units must also be supplied with electrical energy, but with energy lower voltage than the spindle drives, ie, for example, with a voltage of 5 V, 15 V or 24 V. The lines for supplying said electronic components are also preferably formed on the circuit board as conductor tracks. With regard to the voltage source can:

1. a. the printed circuit board is connected, preferably exclusively, to a further connection interface for the power supply of the electronic components to an external voltage source (eg third DC voltage network); or can
2. b. the power supply of the electronic module via the power supply for the power stages described above (eg, first or second DC network) done.

In case b. is branched off either on the circuit board after the connection interface or at the connection interface or outside the circuit board, the power supply for the electronic modules. In any case, the voltage supply of a printed circuit board takes place here via exclusively a common voltage source.

On the circuit board is preferably a converter, in particular a voltage converter, provided which z. B. an input DC voltage (of, for example, 270 V or 540 V) to a lower DC output voltage (of, for example, 5V or 15V). Depending on whether the input voltage is a DC or AC voltage, the converter is also a power converter function. A converter is particularly necessary when the voltage is removed from the voltage supply for the power stages and must be translated to a lower level accordingly.

• eine gemeinsame Verbindungsschnittstelle zum Anschluss der Sektionselektronik-Einheit an eine externe Daten- bzw. Signalleitung (Datenbus);
• eine gemeinsame Verbindungsschnittstelle zum Anschluss der Spannungsversorgung der Spindelantriebselektronik-Einheiten und/oder der Sektionselektronik-Einheit an eine externe Spannungsquelle;
• eine gemeinsame Verbindungsschnittstelle zum Anschluss der Spannungsversorgung der Leistungsstufen der Spindelantriebselektronik-Einheiten an eine externe Spannungsquelle (DC-Bus);
• Verbindungsschnittstellen zum Anschluss der Spannungsversorgung der Spindelantriebe an die Spindelantriebselektronik-Einheiten, d.h. Leistungsstufen;
• Verbindungsschnittstellen zum Anschluss externer Geräte, wie Anzeigen oder Handschalter an die Spindelantriebselektronik-Einheiten
  vorgesehen sein.

In summary, according to the invention, directly on the printed circuit board or on one of the cable ends permanently mounted on the printed circuit board:

• a common connection interface for connecting the section electronics unit to an external data or signal line (data bus);
• a common connection interface for connecting the voltage supply of the spindle drive electronics units and / or the section electronics unit to an external voltage source;
• a common connection interface for connecting the power supply of the power stages of the spindle drive electronics units to an external voltage source (DC bus);
• Connection interfaces for connecting the power supply of the spindle drives to the spindle drive electronics units, ie power stages;
• Connection interfaces for connecting external devices, such as displays or manual switches, to the spindle drive electronics units
  be provided.

The section electronics unit can also receive their power supply independently of the spindle drive electronics units via the data bus.

The said connection interfaces can, for. B. solid compounds, such as. As solder joints, or releasable compounds, such as. B. plug or plug connections or Aufschnappkontaktierungen. If the connection from the circuit board to externally created by cable ends, the cable ends are preferably via fixed connections, eg. B. via solder joints, either with the associated tracks on the circuit board or directly with the corresponding Section electronics or spindle drive electronics units connected. At the free end of the cable end then the connection interface of the type described above for connecting the cable end to the external supply is then provided.

In a preferred embodiment of the invention, so-called cable ends with connection interface, also called cable tails, are attached to the printed circuit board via a, preferably fixed connection, via which the spindle motor is supplied with electrical energy. The cable end preferably has a connector, by means of which this can be connected directly or indirectly via a spindle bank on the spindle unit.

The connector can, for. B. between the cable end and the spindle bank, on which a corresponding connector is attached. The spindle unit itself can be connected to the spindle bank via a further plug-in or plug-in connection on the spindle bench, which is conductively connected to the plug connection for the cable end. In this way, the cable ends of the PCB can be connected to the connector on the spindle bank, regardless of whether a spindle unit is already mounted or not. On the other hand, spindle units can be arbitrarily removed from the spindle bank, without the cable end connections must be solved.

The connection lines to the display and / or the handset can as described above as cable ends with connection interface, z. As connectors, may be formed, which are connected via a, preferably fixed connection to the circuit board. The connectors are connected directly or indirectly to the display or the handset via a plug connection.

Under plug connection to be meant in the context of this application, the male or female part of a connector. A plug connection can z. B. a plug or built-in plug or a clutch or socket. The plug connections can be equipped with a detachable "snap-in" or snap-on contact.

Furthermore, the supply line of a circuit board for supplying the power stages with electrical energy via a, preferably fixed to the circuit board connected cable end with connection interface, z. As connectors, have. The cable end is z. B. via the connector or a Aufschnappkontaktierung to a central power supply line (DC bus) can be connected.

In a modification of the present invention, it is also conceivable that the communication between machine control and section electronics unit and / or between section electronics unit and spindle drive electronics unit is modulated onto the power supply. In other words, communication takes place via the feed line. In this case z. The communication lines, i. Data bus, between machine control and section electronics unit omitted. According to this embodiment, the data line between section electronics units and the spindle drive electronics units according to the characterizing part of claim 1 could be both data line and feed line. Furthermore, the data line between machine control and section electronics unit according to the preamble and characterizing part of claim 1 could be both data line and feed line.

The circuit board would accordingly only partially or not at all provided with separate communication tracks. It can, for. B. be provided that data traffic and supply voltage via a common line and a common interface to the circuit board are performed. Traffic and supply voltage could then z. B. in one of the section electronics unit upstream converter or in the section electronics unit itself separated from each other and continue on separate tracks, z. B. led to the spindle drive electronics unit.

Due to the hierarchical division between machine control / section electronics unit / spindle drive electronics unit even with a large number of monitored and controlled jobs with little effort always such a total control of the spinning or twisting machine feasible. The manufacturing costs are not least due to the minimal cabling As well as the highly automated production of populated printed circuit boards with also fully automatically applied tracks significantly reduce. Individual functional areas can be clearly separated. The variation possibilities resulting for the control of the spinning or twisting machine are not least considerably enhanced by the fact that the section electronics units and spindle drive electronics units provided according to a particularly preferred embodiment of the invention are modules with their own intelligence on different hierarchical levels. There are several subsystems on several hierarchical levels, to which the machine control unit is assigned, for example, as a master. Thus, the intelligence required to control and operate the entire spinning / twisting machine is split into different levels. Furthermore, in a direction perpendicular to the respective hierarchy levels only a small cabling effort is required. The division of the functions on the different hierarchy levels can now be easily made, for example, according to cost criteria.

The printed circuit board with said components is present as an assembly, which is manufactured separately and installed as a unit in the spinning or twisting machine. Easy detachable connections, such as plug-in connections, allow the PCB to be quickly and easily connected to the external voltage sources, the data or signal lines and the loads (spindle drives). The spindle units, as well as the entire wiring within the spinning or twisting machine can be installed separately and independently of the control electronics on the circuit board.

In addition to the respective spindle drive electronics unit, additionally or alternatively, the respective section electronics unit can be designed for automatic execution of at least part of the operating functions. Thus, in addition to the higher-level machine control unit, the assemblies provided on the lower hierarchical levels can autonomously execute at least individual operating functions.

In this case, the respective spindle drive electronics unit or section electronics unit can, for example, for the autonomous execution of one or more of the following functions yarn break detection, Luntenstopp, single-spindle drive control, thermal monitoring of the individual spindle drives, Luntenumschaltung, spindle speed measurement, yarn tension measurement, communication with an associated walking machine, spinning station operator guidance, fault indicators, hand switch and / or other sensor functions are designed. Preferably, a yarn breakage and / or an increased yarn tension can be determined by the respective spindle drive electronics unit via the current or power consumption of the electric motor drive associated with the respective workstation.

From the machine control unit itself z. As the startup and / or sequence control, which can be effective, for example, both in a normal shutdown as well as an emergency shutdown in case of power failure.

Fig. 1:

eine schematische Darstellung einer erfindungsgemässen Leiterplatte mit Elektronikbaugruppen;

Fig. 2:

eine schematische Darstellung eines Verbundes von Leiterplatten;

Fig. 3a:

eine erste Ausführungsform der Organisation der Elektronikbaugruppen in einer Spinn- bzw. Zwirnmaschine;

Fig. 3b:

eine zweite Ausführungsform der Organisation der Elektronikbaugruppen in einer Spinn- bzw. Zwirnmaschine.

The invention is explained below with reference to exemplary embodiments with reference to the drawings. Show it:

Fig. 1:

a schematic representation of a circuit board according to the invention with electronic modules;

Fig. 2:

a schematic representation of a composite of printed circuit boards;

Fig. 3a:

a first embodiment of the organization of the electronic assemblies in a spinning machine;

3b:

a second embodiment of the organization of electronic assemblies in a spinning or twisting machine.

The Fig. 1 shows a section of an inventive circuit board 2.1. This contains a plurality of spindle drive electronics units 5.1, 5.2, 5.3 and a section electronics unit 3, which are communicatively connected to each other via data / signal lines 34 in the form of a conductor track. The section electronics unit 3 is connected via a plug-in connection 35 to a data bus 33, on which a machine control unit (not shown) provided on a further higher hierarchical level has access.

The section electronics unit 3 has a controller 31 and an interface electronics 32. The spindle drive electronics units 5.1, 5.2, 5.3 likewise each have a controller 51, an interface electronics 53, and a power stage 52. A connecting line 8.1, 8.2, 8.3, 8.4 in the form of a cable end with connector 10.1, 10.2, 10.3, 10.4 is in each case with the spindle drive electronics unit 5.1, 5.2, 5.3 via a fixed connection to the circuit board 2.1, z. B. soldered connection connected. The connecting line 8.1, 8.2, 8.3, 8.4 is connected via the connector 10.1, 10.2, 10.3, 10.4 to a manual switch 7.1, 7.2, 7.3, 7.4. Instead of or in addition to the manual switch 7.1, 7.2, 7.3, 7.4, a (fault) display or Luntenstoppeinrichtung (both not shown) may be provided.

The power stages 52 of the spindle drive electronics units 5.1, 5.2, 5.3 are supplied via a feed line 41 in the form of printed conductors with electrical energy. With the feed line 41, a connecting line 47 in the form of a cable end with connector 44 is firmly connected, for. B. via a solder joint on the circuit board 2.1. The connecting line 47 is connected via the connector 44 to an external voltage source 46. The electrical energy, z. B. 270 V DC, is supplied via the connecting line 47 and the feed lines 41 on the circuit board 2.1 the power stages 52 of the spindle drive electronics units 5.1, 5.2, 5.3.

With the spindle drive electronics units 5.1, 5.2, 5.3 each have a feed line 9.1, 9.2, 9.3 in the form of a cable end with plug connection 11.1, 11.2, 11.3 firmly connected. The cable end 9.1, 9.2, 9.3 can each be attached directly to the spindle drive electronics units or to a conductor track on the circuit board, z. B. via a solder joint. The feed line 9.1, 9.2, 9.3, via which the power supply for the spindle motor 6.1, 6.2, 6.3 takes place, is directly or indirectly connected to the spindle motor 6.1, 6.2, 6.3. The spindle motors 6.1, 6.2, 6.3 are here BLDC motors.

On the circuit board 2.1, a voltage converter 4 is also provided for supplying the electronic components on the circuit board, ie the section electronics unit and the spindle drive electronics units, with electrical energy of a certain voltage. The electrical energy from the voltage converter 4 is the electronic components 3, 5 fed via conductor tracks 42. The voltage converter 4 can now z. B. via a corresponding supply line 43 a (trace) electrical energy from the spindle drive supply line 41 and decrease to the necessary lower voltage of z. B. 5 V or 15 V translate. The voltage converter 4, however, can also draw its electrical energy from a separate feed line 43b led to the printed circuit board 2.1 in the form of a cable end with a plug connector 45 via a further external voltage source. For this purpose, the cable end 43b is connected via a plug connection 45 to an external voltage source (not shown). The section electronics unit 3 itself can receive its electrical energy instead of the said voltage converter 4 via a separate supply line by means of data bus 33.

The Fig. 2 shows a system interconnection between different sections of a two-sided spinning or twisting machine. The spinning or twisting machine contains a plurality of printed circuit boards 2.1 to 2.n + 3, which are arranged one behind the other in the machine direction. Each printed circuit board 2.1 to 2.n + 3 corresponds to a section with a certain number of jobs, such a section being limited to one machine side 81, 82. The circuit boards 2.1 to 2.n + 3 are connected via a ring bus 33 with each other and with a higher-level machine control 1. The matching elements according to Fig. 1 and 2 Although the same reference numerals, but this does not mean that the circuit board according to Fig. 1 can not be organized in another form of composite of printed circuit boards.

According to the in Fig. 3a shown first embodiment for organizing the electronic assemblies in a spinning or twisting machine comprises a respectively on a printed circuit board 62.1, 62.2, 62.3, 62.4 converted tax technical section several adjacent jobs on both machine side 83, 84th D. h. a printed circuit board has spindle drive electronics units for both machine sides 83, 84. Correspondingly, line connections 66 lead away from the printed circuit boards 62.1, 62.2, 62.3, 62.4 to the spindle drives 64 fastened to a respective spindle bank 61a, 61b to both machine sides 83, 84. The printed circuit boards 62.1, 62.2, 62.3, 62.4 are located between the two machine sides 83, 84 and are one behind the other in the machine longitudinal direction 65 arranged. The printed circuit boards 62.1, 62.2, 62.3, 62.4 are connected to one another via a data bus 63 and to a machine control (not shown). The data bus 63 may be constructed in a suitable form. Its specific expression is of minor importance in connection with the invention.

Since a machine section of a spinning machine always includes work stations on both sides of the machine, the control section and the machine section in this example may coincide with each other. This means that a machine section each has exactly one printed circuit board with a section electronics.

According to the in Fig. 3b shown second embodiment for organizing the electronic assemblies in a spinning or twisting machine comprises a respectively on a printed circuit board 72.1 to 72.n + 3 converted tax technical section exclusively several adjacent jobs on a machine side 85, 86th D. h. Each machine side 85, 86 has separate circuit boards 72.1 to 72.n + 3 and each circuit board 72.1 to 72.n + 3 has spindle drive electronics units for only one machine side 85, 86. Accordingly lead only to a machine side 85, 86 out line connections of the circuit boards 72.1 to 72.n + 3 away to each of a spindle bank 71a, 71b fixed spindle drives 74 out. The printed circuit boards 72.1 to 72.n + 3 are arranged one behind the other in the machine longitudinal direction 75. The printed circuit boards 72.1 to 72.n + 3 are connected to each other via a data bus 73 and a machine controller (not shown). The data bus 73 may be constructed in a suitable form. Its specific expression is of minor importance in connection with the invention.

Since a machine section of a spinning machine always includes work stations on both sides of the machine, a control section and the machine section do not match each other. According to a preferred embodiment, a machine section each contains two printed circuit boards 72.1, 72.n + 3, wherein each printed circuit board controls the work sites of a machine side 85, 86 assigned. In principle, a machine section may contain any even number of printed circuit boards.

A machine section can, for. B. 48 spinning stations, each 24 spinning stations on both sides of the machine. According to the embodiment according to Fig. 3a contains a printed circuit board preferably 48 spindle drive electronics units and according to the embodiment according to Fig. 3b Each board contains 24 spindle drive electronics units.

Claims (15)

1. Spinning or twisting machine with individual spindle drive, containing a machine frame receiving a plurality of workstations which are divided in control terms into a plurality of sections, a section comprising a plurality of workstations, and a spindle unit with a spindle and with a spindle drive (6) of variable rotation speed being provided per workstation, and a spindle-drive electronic unit (5) being provided per spindle unit, and, furthermore, containing a machine control unit (1) for activating the spindles and a section electronic unit (3) per section, which are connected to the machine control unit (1) via a data line (33), a plurality of spin-die-drive electronic units (6) being connected via a data line (34) in each case to a section electronic unit (3) and being activatable by the machine control unit (1) via the section electronic unit (3) assigned to them, characterized in that a plurality of spindle-drive electronic units (5) of a section and the section electronic unit (3) are arranged on a common circuit board (2), and the spindle-drive electronic units (6) are connected via data lines in the form of conductor tracks (34) to the section electronic unit (3), and the section electronic unit (3) is connected via a connection interface (35) and a data line (33) to the machine control unit (1), and the spindle-drive electronic units (5) are connected via connection Interfaces (11) and feed lines (9) to the spindle drives (6).
2. Spinning or twisting machine according to Claim 1, the spindle-drive electronic units (5) containing interface electronics (53), in particular a digital I/O interface, for connecting an indicator and/or a start/stop switch (7), and In each case a signal and feed line (8) for an indicator and/or a start-stop switch leading away from the spindle-drive electronic units (5).
3. Spinning or twisting machine according to either of Claims 1 and 2, a circuit board (2) with a section electronic unit (3) and with a plurality of spindle-drive electronic units (5) being provided per section, which units are assigned to the workstations belonging to this section, and a plurality of circuit boards (2) being arranged one behind the other in the machine longitudinal direction (75) and being assigned to the respective machine sections.
4. Spinning or twisting machine according to one of Claims 1 to 3, the section electronic units (3) being connected to one another and to the machine control (1) by means of a databus (33).
5. Spinning or twisting machine according to one of Claims 1 to 4, the spindle-drive electronic unit (5) containing a controller (51), power stage (52) and interface electronics (53).
6. Spinning or twisting machine according to one of Claims 1 to 5, the section electronic unit (3) containing a controller (31) and interface electronics (32).
7. Spinning or twisting machine according to Claim 5, the supply voltage for supplying the spindle drive (6) being supplied in the circuit board (2) via one or more connection interfaces (44) and supply lines (47) and being supplied to the power stages (52) of the spindle electronic units (5) on the circuit board (2) via conductor tracks (41).
8. Spinning or twisting machine according to one of Claims 1 to 7, the supply voltage for supplying the spindle-drive electronics and/or section electronics being supplied to the circuit board (2) via one or more connection interfaces (45) and supply lines (43b) and being supplied to the spindle-drive electronic units (5) and/or the section electronic unit (3) on the circuit board (2) via conductor tracks (41).
9. Spinning or twisting machine according to Claim 8, there being attached to the circuit board (2) a converter (4) which converts an input voltage and, if appropriate, input frequency into an output voltage and, if appropriate, output frequency, with which the spindle-drive electronics and/or the section electronics are fed.
10. Spinning or twisting machine according to one of Claims 1 to 9, the sections extending in each case on one machine side (85, 86) along a specific number of successive workstations in the machine longitudinal direction.
11. Spinning or twisting machine according to one of Claims 1 to 9, the sections in each case extending over both machine sides along a specific number of workstations lying opposite one another on both machine sides (83, 84) and succeeding one another in the machine longitudinal direction.
12. Spinning or twisting machine according to Claim 1, the spindle units (74) being fastened at defined distances from one another on a spindle rail (71a, 71 b) extending in the machine longitudinal direction (77), and the circuit boards (72) being fastened via a mounting system In the associated section region on the machine frame or on the component connected to the machine frame.
13. Spinning or twisting machine according to Claim 1, the circuit boards (72) being fastened, in a cross-sectional view of the machine, in the machine centre between two machine sides or at the spindle rail (71a, 71b) receiving the associated spindle units (74).
14. Spinning or twisting machine according to one of Claims 10 to 13, in the case of sections extending over both machine sides, spindle-drive electronic units for the workstations of both machine sides being arranged on a circuit board (62), and supply lines leading from the circuit board (62) to the spindle drives (64) on both machine sides (83, 84).
15. Spinning or twisting machine according to one of Claims 10 to 13, spindle-drive electronic units for the workstations of one machine side (85, 86) in each case being arranged on a circuit board (72), and supply lines leading from the circuit board (72) to the spindle drives (74) on the one machine side.

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