WO2009132469A1

WO2009132469A1 - Spinning machine with single-spindle drive

Info

Publication number: WO2009132469A1
Application number: PCT/CH2009/000126
Authority: WO
Inventors: Rudolf Brand; Benedikt Ingold
Original assignee: Maschinenfabrik Rieter Ag
Priority date: 2008-04-30
Filing date: 2009-04-22
Publication date: 2009-11-05
Also published as: DE112009001016A5; CN102046862A; CN102046862B; JP2011518966A

Abstract

The invention relates to a ring spinning machine with a single-spindle drive, comprising a machine frame that holds work points subdivided by controls into a plurality of sections, wherein each section comprises a plurality of work points, and one spindle unit (200) comprising a spindle (201) and one spindle drive (203) is provided per work point. One spindle drive electronics unit (105) is provided per spindle unit (200). The spinning machine further comprises one section electronics unit (112) per section (160), said units being connected to a machine control unit (101) by way of a data line (133), wherein a plurality of spindle drive electronics units (105) are connected to each section electronics unit (112) by way of a data line (134). The invention is characterized in that a control section (160) comprises four circuit boards (102.1-102.4), each comprising a plurality of spindle drive electronics units (105), the energy supply and communication to the spindle drive electronics units (105) being routed on said circuit boards by way of conduction paths (134, 141, 142), wherein one circuit board is designed as a section circuit board (102.1) comprising the section electronics unit (112) and one or more connection interfaces (135) to an external communication apparatus and power supply, and circuit boards (102.1-102.4) are connected together in series.

Description

Spinning machine with single spindle drive

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, one section comprises several jobs, and per workstation a spindle unit is provided with a spindle and a spindle drive and a spindle drive electronics unit is provided for each spindle unit, further comprising a machine control unit for controlling the spindle units and a section electronics unit per section, which are connected to the machine control unit via a data line, to each of which a section electronics unit Unit a plurality of Spindelantriebselektronik- units are connected via a data line, which can be controlled by the machine control unit via their associated section electronics unit.

Spinning machines or twins having a plurality of work stations 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 spinning station electronics are located together with the spindle motor in a common structural unit, which in turn together with the spindle form the spindle unit. 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 installation effort is very complex and expensive. After all, a big spinning machine 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.

Thus, EP-A-O 389 849 describes a control system for a ring spinning machine with a plurality of spinning units, which are monitored and controlled in sections together. The spinning station is assigned to the autonomous execution of at least part of the operating functions a spindle drive electronics. One, in each case several 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 manufacturing, assembly and cabling of the corresponding spinning machine is still 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 cables, the wiring effort for supplying the spindle drives with electrical energy is added. In addition, the section electronics and the Spindle drive electronics are supplied via supply lines with electrical energy. Since the electronics have a different supply voltage than the spindle drives, two separate wiring for the power supply must be provided.

In addition to the high and costly wiring effort, which usually has to be mastered by trained and correspondingly expensive specialist personnel, the production costs for the section electronics and spindle drive electronics units, which are manufactured as separate components, as well as for the wiring also make it possible.

Object of the present invention, therefore, to propose a new design concept for organizing the control electronics and power supply in a spinning or twisting machine to eliminate the disadvantages mentioned above or at least significantly reduce.

The object is achieved according to the invention in that a control-technical section contains at least two printed circuit boards, each with a plurality Spindelantriebselektronik- units on soft the communication to the Spindelantriebselektronik- units runs via tracks, wherein a circuit board is designed as a section circuit board, which the section electronics unit and one or more connection interfaces to an external communication device, and the circuit boards are connected to each other, so that the communication to the individual spindle drive electronics units on the boards of a control section on the section PCB takes place.

In a development of the invention, the energy supply to the power stages and / or to the electronics of the spindle drive electronics units likewise runs via conductor tracks on the at least two printed circuit boards, wherein the section printed circuit board contains one or more connection interfaces to an external power supply, and the circuit boards are connected to one another, so that the energy supply to the individual spindle drive electronics units on the printed circuit boards of a control technology section via the section PCB.

The printed circuit boards can be used in series, i. one behind the other, be connected with each other. That Consequently, the sub-boards are not all connected directly to the section boards, but always indirectly via the next adjacent board, with the sub-boards adjacent to the section board being connected to the section board. However, it can also be provided that each slave printed circuit board is connected directly to the sectional printed circuit board. As sub-boards, those boards of a section are referred to, which are not sectional board.

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 the machine spinning or twisting stations are arranged. In the case of single-sided machines, jobs are correspondingly arranged on only one side.

By the term "section" alone is meant in this application a control engineering section having a plurality of work stations, i. Spinning or twisting, to understand their spindle drive electronics units are controlled or managed via a common section electronics unit. Such a section is limited to one machine side. It extends in the machine longitudinal direction and comprises a plurality of adjacent workstations.

A section can z. B. 24 jobs, d. H. Spindle drive motors include. In a preferred further development of the invention, a section contains 4 printed circuit boards each having 6 spindle drive electronics units for the work stations or spindle drives assigned to this section. One of these 4 circuit boards is designed as a sectional printed circuit board and contains a corresponding section electronics unit.

Under a 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 festhaf- conductive interconnections, also called interconnects. 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 final supply of the spindle drives with electrical energy are preferably also present as conductor tracks on the carrier. The mechanical attachment of the electronic components can, for. B. via electrically conductive connectors, such as pins, 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 or twisting 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. As a controller, an electronic unit is referred to with integrated circuits, the various processes controls, regulates or switches. 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 contains a processor, ie a computing 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.

Further, the spindle drive electronics unit includes a power stage, also called a power driver or power stage, through 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 consumer is applied to the power driver and the controller switches this operating voltage on the input side with predictable current flow 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. B. 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 can be switched off electronically and expediently also by means of a manual switch via the associated spindle drive electronics unit or the higher-level section electronics unit. 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 incidents.

For autonomous Stilliegung 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 manual on and off the spindle drive on site, ie can be connected directly to the spinning station. The manual switching device with 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. For example, after a faulty thread break on site, switch it on again manually or switch it off in the event of a detected fault. The control of the spindle drive via the manual switching device thus takes place autonomously by the machine control, and is controlled by the spindle delantriebselektronik unit and / or optionally carried out via the section electronics unit.

Furthermore, the interface electronics of the spindle drive electronics unit can also be used to connect a display, in particular a fault indicator. The display, which is e.g. a visual indication (light) can be, for. 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 via 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 can be connected to the associated spindle drive electronics unit or the section electronics unit. 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 performance of various operating functions by the machine control, section control and spindle drive control as well as their division of tasks, reference is made to EP-A-O 389 849.

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 Sekti- onselektronik units additionally 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 establishes 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 to switch the spindle drive motors to generator operation. This procedure 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 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. More details regarding The concept, which is behind the generator operation of the spindle drives in case of power failure, z. Example, the DE-C-43 120 23 or EP-B-451 534 are 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 from the machine controller or even directly from a power failure sensor system to section electronics unit can be performed, 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 boards of a section exclusively has a connection interface for the data and signal exchange with the machine control, which are arranged on the circuit board.

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 through 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 via the respective spindle drive electronics units and the parent section electronics unit for an evaluation and / or higher-level display of the ma- be supplied to 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. A machine section includes jobs on both sides of the machine. A conventional machine section includes z. For example, 48 workstations, with 24 workstations arranged on the left and right side of the machine. The section division of the machine allows a modular structure derselbigen. The spinning or twisting machine is constructed in this case of juxtaposed machine sections. In this way it is possible to assemble machines with identical machine head and machine foot, but with a different number of workstations. The machine frame also has a corresponding sectional structure for this purpose.

The constructive section construction does not match the control technology section design, since the control technology sections only comprise spinning stations on one side of the machine. Advantageously, however, the control-technical summary of jobs oriented to sections and the corresponding assignment of a respective section electronics unit to the structural division of the machine in machine sections. In a preferred embodiment of the invention, a machine section comprises two control section, of which a first section is arranged on the left and a second section opposite on the right side of the machine, the two sections complementing one another with respect to the number of work stations.

However, a machine section can also comprise more than two control-technical sections, with one machine section generally always comprising an even number of control-technology sections. The application of such a modular Principle allows pre-assembly of machine sections in the factory, which significantly reduces the assembly time in spinning operation.

According to the invention, a control-engineering section contains at least two printed circuit boards, wherein one of the printed circuit boards is designed as a section printed circuit board, which in addition to spindle drive electronics units additionally comprises a section electronics unit and a communication interface to the outside for machine control. Furthermore, the section contains at least one further printed circuit board, which comprises spindle drive electronics units. The section may also include two, three, four, five, or more than five additional printed circuit boards with spindle drive electronics. The section preferably contains three further such printed circuit boards. On each of these boards, including the section board, z. B. 6 spindle drive electronics units arranged. The 4 circuit boards thus form a section of 4 x 6 = 24 workstations. The electronic assemblies contained on the other printed circuit boards are preferably exclusively spindle drive electronics units.

The circuit boards of a section are expediently connected to each other in series, at least in terms of communication technology. That the printed circuit boards are arranged one after the other in the machine longitudinal direction and the preceding printed circuit board is in each case connected to the adjacent printed circuit board via corresponding line connections. For this purpose, the tracks of two adjacent circuit boards are connected to each other via a wire or cable. The communication links converge in the section electronics unit of the section board. The wire or cable connections can be connected via plug connections to the circuit board. The printed circuit boards can also be connected to one another directly with the omission of an intermediate cable or wire by means of plug connectors.

The same connection concept preferably also applies to the power supply of the spindle drive electronics units and / or the spindle drives or their power stages. Here too, the four printed circuit boards are preferably connected to each other in series in terms of energy. That is, the printed circuit boards are arranged one after the other in the machine direction and the preceding printed circuit board is in each case connected to the adjacent barten printed circuit boards via appropriate line connections, z. B. of the aforementioned type connected. The power supply connections run together on the section PCB at a common connection interface which connects to an external power supply system.

The circuit boards have corresponding connection interfaces, in particular plug connections or solder connections, for the production of the power supply and / or communication connection to the adjacent printed circuit board belonging to the same section.

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 power supply of the spindle drives is also preferably via the circuit board. European Patent Application No. 07021866.4 describes a concept for supplying current to the spindle drive motors of a spinning machine. In a preferred embodiment of the invention, the power supply of the spindle drive motors from outside relies on the concept described in this application.

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 may further comprise a third DC voltage network with a DC voltage 540 V are formed. For further explanations of the mentioned DC networks, turn to the europ. Patent Application No. 07021866.4.

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. That is, within a printed circuit board and across the boards, a first power stage receives the power from the first network, and the adjacent second power stage, the power from the second network, and the subsequent third power stage, the power from the first network, etc.

Alternatively, it can also be provided that all power stages of a first printed circuit board draws the power from the first network and all power stages of a second, adjacent printed circuit board draws the power from the second network and a third, with the second adjacent printed circuit board recovers the power from the first network, etc That is the boards within a section and across the sections take power for the power levels alternately from the first and second networks. In this way, the symmetry of the power supply is ensured and the supply system runs stable. The printed circuit boards or at least the section printed circuit board is / are respectively equipped for the alternating supply of the individual power stages of the first and second direct voltage network with connection interfaces and conductor tracks.

For the above reason, it is also preferable that the section electronics units, if not already being 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 rather than 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. At a Supply from the third DC network is the transformer, if necessary, assign 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 feed lines are on the circuit board, as already mentioned, preferably designed as conductor tracks. The section is preferably connected via the section printed circuit board via exclusively a connection interface for the power supply of the power stages or the spindle drives with an external voltage source. When feeding the power stage with alternating voltage source according to the above statements, the section is preferably connected via the section circuit board via only 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, it may be provided for each power stage and / or spindle drive electronics, a separate connection interface on the circuit board to an external power source. Furthermore, a separate connection interface to an external voltage source for supplying the power stages and / or the spindle drive electronics units of this printed circuit board with electrical power may be provided for each circuit board of a section. However, these solutions are not particularly preferred for economic considerations.

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: a. all printed circuit boards of a section or only the section printed circuit board can be connected to an external voltage source via a further connection interface for the power supply of the electronic components (eg via the third DC voltage network); or can b. the power supply of the electronic modules via the above described

Voltage supply for the power stages (eg first or second DC voltage network).

In case b. The power supply for the electronic modules is branched off either on the printed circuit board following the connection interface or on the connection interface or outside the printed circuit board, in front of the connection interface. In any case, the voltage supply of a printed circuit board is made exclusively via a common external voltage source.

On the section circuit board is preferably a converter, in particular a voltage converter, is provided which z. For example, an input DC voltage (of, for example, 270 V or 540 V) is converted to a lower output DC voltage (of, for example, 5 V or 15 V). Depending on whether the input voltage is a DC or AC voltage, the converter also has a converter function. A converter is particularly necessary if the voltage for the electronic modules is removed from the voltage supply for the power stages and must be translated accordingly to a lower level. Preferably, only the section circuit board has such a converter. The power supply of the electronic modules is carried out for all circuit boards of a section preferably via this one converter.

However, it can also be provided that each circuit board of a section contains its own converter, which lowers the supply voltage for the electronic assemblies to the required level. Thus, each circuit board of a section, as already described in the context of the circuit board, their supply voltage z. B. branch off from the supply voltage for the power levels, z. B. 270 V or 540 V, and the converter to the required level, z. B. 5 V or 15 V lower. From the converter then lead corresponding tracks to the consumers. It is also conceivable that the section circuit board includes a first converter, which supplies the supply voltage from a high level, for. B. from 270 V or 540 V to a lower level, z. B. from 20 to 30 V brings. Conductor tracks lead from the first converter to a second converter provided on each printed circuit board, which brings the supply voltage to the exact level required for the supply of the electronic components, for. B. 5 V or 15 V. The two aforementioned alternatives with converters on each circuit board have the advantage that the required supply voltage directly at the consumers, ie on each circuit board, generated and stabilized at the required level. Voltage fluctuations or a voltage drop due to the long transport routes eliminated.

In summary, according to the invention, directly on the section printed circuit board or on one of the cable ends permanently attached to the section printed circuit board: a. a common connection interface for connecting the section electronics unit to an external data or signal line (data bus); b. 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; c. 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); d. Connection interfaces for connecting the power supply of the spindle drives to the spindle drive electronics units, i. Power levels; e. Connection interfaces for connecting external devices, such as displays or switches and the spindle drive electronics units may be provided.

The connection interfaces ac and d. are mandatory. The connection interface b. is optional insofar as said power supply can also be supplied via the connection interface c. can be done. On the circuit boards of a section, which are not section boards, the connection interfaces d. mandatory and e. optionally provided. Furthermore, connection interfaces b. and c. be provided according to the above listing.

Moreover, the section electronics unit can also receive its 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. connectors. The plug connections can be equipped with a detachable "snap-in" or snap-on contact. 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 traces on the circuit board or directly connected to the corresponding section electronics or spindle drive electronics units. 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.

The spindle drive electronics units, ie the power stages, can each be connected to the spindle drives via first plug-in connections, which are applied to the printed circuit boards. That is, the power supply of the spindle drives via the first plug-in connections on the circuit boards, which form a plug connection with second plug-in connections, which are electrically connected to the spindle drive. Each spindle drive electronic unit is preferably associated with such a first plug connection. The second plug-in connections are located respectively on the spinning or twisting machine. The second plug connections can z. B. be attached directly to the spindle bank or indirectly via a Haiierung to the spindle bank. The second plug-in connections can also be attached to a component of the spindle unit, for. B. be mounted on the spindle housing, the latter being mounted on the spindle bank, so that here is the second plug connection to the spinning machine, although indirectly. The second plug-in connections can also be otherwise attached directly or indirectly to the spinning or twisting machine. The plug-in connections have the advantage that not only an electrical connection to the spindle motors is produced by entering the said connector, but at the same time the circuit board on the machine, for. B. is attached to the spindle bank. The function of the plug-in connections is thus on the one hand in the creation of an electrical connection and in the attachment of the printed circuit board to the spinning or twisting machine, in particular to the spindle bank. Per circuit board accordingly result in a plurality of connectors, which give the circuit board a correspondingly good grip on the machine.

In a further development of the invention, second plug-in connections for the printed circuit board as well as for the spindle units can be provided directly on the spindle bank or via corresponding holders, so that on the one hand the spindle units can be placed on the spindle units via corresponding first plug connections on the spindle units and conductively connected and on the other hand, the printed circuit boards can be attached and conductively connected via corresponding first plug connections on the circuit boards from below or from the side to the spindle bank. The second plug-in connections to the spindle bank for a power level on the circuit board on the one hand and for the associated spindle unit on the other hand are correspondingly conductively connected to each other. This allows independent exchange or independent assembly of spindle units on the one hand and printed circuit boards on the other.

The circuit board can be attached as mentioned next to or below the spindle bank. Preferably, the circuit board is mounted directly below the spindle and covered by a housing. The housing may include integrated means, such as webs and ribs, for supporting and / or securing the circuit board. The housing is preferably made of plastic. Furthermore, the housing can have receptacles for fastening or for receiving a workstation and / or section display and / or a manual switch. According to a particular embodiment of the invention can be provided that the circuit board is attached to the housing via appropriate fastening means on the housing. This can be z. B. via a positive connection, such as snap connection or Tongue and groove connection happen. The housing forms with the circuit board (s) preferably a mounting unit, which is attached as a unit under the spindle bank. The plug-in connections to the spindle units need not exert a supporting or holding function here, since the circuit board is supported and supported by the housing, which in turn is fastened to the spindle bench. Preferably, a printed circuit board forms a structural unit with the associated housing section. The housing with its mounting for the printed circuit board (s) may be such that the printed circuit boards are positioned and aligned in their mounting position on the housing, so that the circuit boards are already in the correct position for the plug connections when attaching the housing module to the spindle bank.

The connection lines to the display and / or the handset can be used 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 plug connectors are connected directly or indirectly to the display or the manual switch via a plug connection. However, the jobs or section display is preferably a mounted on the circuit board lamp, in particular light emitting diode.

Furthermore, the supply line of a printed circuit board for supplying the power stages with electrical energy via a preferably connected to the circuit board or the associated trace 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. That is, communication takes place via the feed line. In this case z. As the communication lines, ie the data bus, between machine control and section electronics unit omitted. According to this embodiment, the data line could be connected between section electronics units and the spindle drive electronics units according to the characterizing part of claim 1 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 production costs can be considerably reduced, not least because of the minimal amount of cabling and the highly automated production of populated printed circuit boards with likewise fully automatically applied printed conductors and integrated circuits. Individual functional areas can be clearly separated. The variation possibilities resulting for the control of the spinning or twisting machine are not least considerably increased by the fact that the section electronics units and spindle drive electronic units provided according to a particularly preferred embodiment of the invention on different hierarchical levels are assemblies with their own intelligence. 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 machine or machine is divided into different levels. Furthermore, in a direction perpendicular to the respective hierarchy levels only a small cabling effort is required. The division of functions on the Different hierarchy levels can now be easily made, for example, according to cost criteria.

The printed circuit board with the mentioned components is present as an assembly, which is manufactured separately and installed as a unit in the spinning or twisting machine. Through simple plug-in connections, the printed circuit board can be quickly and easily attached to the machine, in particular on the spindle bank, and electrically connected to the spindle motors. Additional detachable connections such as plug-in connections allow the printed circuit board to be quickly and easily connected to the external power sources and the data or signal lines. The spindle units on the one hand, and the entire wiring within the spinning or twisting machine on the other hand can be installed separately and independently of the circuit board with their control electronics.

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.

Here, the respective spindle drive electronics unit or section electronics unit, for example, for autonomous execution of one or more of the following functions yarn break detection, Luntenstopp, single spindle drive control, thermal monitoring of Einzelspindelantriebe, Luntenumschaltung, Spindle speed measurement, thread tension measurement, communication with an associated walking machine, spinning stations -Media management, fault displays, hand switch and / or other sensor functions to be designed. A thread break and / or an increased thread tension can preferably be determined by the respective spindle drive electronic unit via the current or power consumption of the electric motor drive assigned to 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.

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

1 shows a schematic representation of a printed circuit board according to the invention with electronic modules; 2 shows a schematic representation of a composite of printed circuit boards;

3 shows a cross-sectional view through a spinning station in the region of the spindle unit.

Fig. 1 shows a section of a section circuit board 102.1. This contains a plurality of spindle drive electronics units 105.1-105.3 and a section electronics unit 112, which are communicatively connected to each other via data / signal lines 134 in the form of a conductor track. The section electronics unit 112 is connected via a plug connection 135 to a data bus 133 to which a machine control unit (not shown) provided on a further higher hierarchical level has access.

The section electronics unit 112 has a controller 131 and an interface electronics 132. The spindle drive electronics units 105.1-105.3 also each have a controller 151, an interface electronics 153, and a power stage 152. The spindle drive electronics units 105.1-105.3 are each connectable via plug connections 113, which are applied to the printed circuit board 102.1, with the spindle drives. That The power supply of the spindle drives via the plug-in connections, which enter into a plug connection with second plug-in connections to the spindle bank or the spindle unit. The spindle motors are here BLDC motors (not shown).

Via connecting lines 108.1-108.4 and plug-in connections 110.1-110.4, a manual switch 107.1-107.4 is connected to the spindle drive electronics unit. Instead of or in addition to the manual switch 107.1-107.4 also a (fault) display or Luntenstoppeinrichtung (both not shown) may be provided.

The power stages 152 of the spindle drive electronics units 105.1-105.3 are supplied with electrical energy via a feed line 141 in the form of printed conductors. With the feed line 141, a connecting line 147 in the form of a cable end with connector 144 is firmly connected, for. B. via a solder joint on the circuit board 102.1. The connection line 147 is connected via the connector 144 to an external voltage source 146. The electrical energy, z. B. 270 V DC voltage is supplied via the connecting line 147 and the feed lines 141 on the circuit board 102.1 the power stages 152 of the spindle drive electronics units 105.1-105.3.

On the circuit board 102.1, a voltage converter 104 is further provided to supply the electronic components on the circuit board, i. the section electronics unit and the spindle drive electronics units, with electrical power of a certain voltage. The electrical energy from the voltage converter 104 is supplied to the electronic assemblies 112, 105 via printed conductors 142. The voltage converter 104 can now z. B. via a corresponding supply line 143a (trace) e- lectric energy from the spindle drive supply line 141 and decrease the necessary lower voltage of z. B. 5 V or 15 V translate. However, the voltage converter 104 can also draw its electrical energy from a separate feed line 143b, which leads to the printed circuit board 102.1, in the form of a cable end with plug connector 145 via a further external voltage source. For this purpose, the cable end 143b is connected via a plug connection 145 to an external voltage source (not shown). The section electronics unit 112 itself can receive its electrical energy instead of via the mentioned voltage converter 104 via a separate supply line by means of the data bus 133.

The printed circuit boards 102.2-102.4 a control technical section 160 (see FIG. 2), which are not designed as a section circuit boards 102.1, have in principle the same structure as the section circuit boards, but they do not contain any section nik units, converters and connection terminals to the central power supply and to the data bus. The electronic assemblies on these printed circuit boards are exclusively spindle drive units.

FIG. 2 shows a detail of a system composite with several control technology sections of a single-sided or two-sided spinning or twisting machine. The spinning or twisting machine is divided into control sections 160 and includes four printed circuit boards 102.1-102.4; 103.1 -103.4 etc., which are arranged one behind the other in the machine direction. All four printed circuit boards 102.1-102.4 each contain spindle drive electronics units 105.1-105.6 for six spinning stations. The four circuit boards 102.1-102.4 a section thus comprise a total of 24 spinning stations on a machine side 82. One of the four circuit boards is formed as a section circuit board 102.1 and contains a section electronics unit 112 and a converter 104. Further, on the section circuit board 102.1 and the Communication terminal to the data bus 133 and the or the terminals for the power supply provided.

The sub-boards 102.2-102.4 communicate via the section board 102.1. This means that they do not have their own communication interface to the data bus. The four circuit boards 102.1-102.4 are connected to each other in series, with two adjacent circuit boards via respective connections, for. B. cable connections, are interconnected.

The same applies to the power supply of the electronics and the spindle drives. The sub-boards 102.2-102.4 draw their power through the section board

102.1. This means that they do not have their own supply interface to the central power supply. The four circuit boards 102.1-102.4 are also connected to each other in series, with two adjacent circuit boards via corresponding connections, for. B. cable connections, are interconnected. The printed circuit boards 102.1-102.4 are accordingly equipped with plug connections or other connections for mutual connection. Each spindle drive electronics unit 105.1-105.6 is assigned a plug connection 113, which is likewise arranged on the corresponding printed circuit board. About this plug-in connection, the circuit board is connected directly to a corresponding plug-in connection to the spindle unit or the spindle bank or another component on the spinning machine. The printed circuit board 102.1-102.4 is thus attached to the spinning machine via said connector. The plug connections 113 and preferably also the spindle drive electronics units 105.1-105.6 are arranged on the printed circuit board in accordance with the spin pitch. This means that the plug connections are arranged distributed on the printed circuit board so that they coincide with the corresponding plug connections at the spinning stations.

The printed circuit boards 102.1-102.4, 103.1-103.4, etc. are connected to each other and to a higher-level machine control 101 via a data bus 133, in particular a CAN bus. The section shown in FIG. 2 reflects only a control-technical section 160 from a machine side 81. It goes without saying that connect several sections of a machine side 82 with four printed circuit boards in a row, and that in mirror-inverted arrangement a second side of the machine on the same Way is equipped.

Since a machine section of a spinning machine includes work stations on both sides of the machine, a control section and the machine section do not coincide with each other. A machine section, however, z. B. composed of two control technical section with 24 spinning stations on both sides of the machine and a total of 48 spinning stations, each on a machine side a control engineering section is arranged.

3 shows a cross-sectional view of a spinning station in the region of the spindle unit 200. The spindle unit 200 comprises a spindle 201 and a spindle housing 202, in which the spindle motor 203 is arranged. The spindle unit 200 is mounted on a spindle bank 204. Below the spindle bank 204, the associated circuit board 207 is arranged. The electrical connection between the circuit board 207, or the spindle drive electronics and the spindle drives via plug connections 208. About the same connector, the mechanical, ie supporting or holding attachment of the circuit board 207 below the spindle bank 204 can take place. The printed circuit board can also be supported via the housing 205 or attached thereto. The plug connection consists of a first plug-in connection which is applied to the printed circuit board 207 and a second corresponding plug-in connection which is attached either to the spindle unit 200, the spindle bank 204 or to a holder connected to the aforementioned components 200, 204.

The printed circuit board 207 below the spindle rail 204 is covered by a housing 205 made of plastic. The housing 205 includes integral support means 211, 212 in the form of webs and ribs which support and fix the circuit board 207 in its mounting position. Integrated on or in the housing is an optical display 210 for indicating yarn breaks or other disturbances. The display is directly connected to the printed circuit board 207 via a solder connection.

On the spindle bank 204, a manual switch 209 is also provided for manually switching off or switching on the spindle drive 203. Also, this switch 209 is connected via a solder connection directly to the circuit board.

On the back of the spindle bank 204, a cable channel 206 is provided, through which the data bus and the lines for the power supply of the spindle and the electronics are performed.

Claims

claims

1. spinning machine or twin machine with single spindle drive, comprising a machine frame which receives a plurality of jobs, the control technology divided into several sections, one section comprises several jobs, and per workstation a spindle unit (200) with a spindle (201) and a spindle drive (203) is provided, and per spindle unit (200) a spindle drive electronics unit (105) is provided, further comprising a machine control unit (101) for controlling the spindle units (200) and a section electronics unit (112) per Section (160) which are connected via a data line (133) to the machine control unit (101), wherein in each case a section electronics unit (112) a plurality of spindle drive electronics units (105) via a data line (134) are connected which can be controlled by the machine control unit (101) via the electronic sector unit (112) assigned to it are,

characterized in that

a control-technical section (160) at least two printed circuit boards (102.1- 102.4) each having a plurality of spindle drive electronics units (105) on which the communication to the spindle drive electronics units (105) via conductor tracks (134, 141, 142) extend, wherein a Printed circuit board as a section circuit board (102.1) is formed, which contains the section electronics unit (112) and one or more connection interfaces (135) to an external communication device, and the circuit boards (102.1-102.4) are interconnected, so that the communication the individual Spindelantriebselektronik- units (105) on the circuit boards (102.1-102.4) of a control-technical section (160) via the section printed circuit board (102.1).

2. Spinning or twisting machine with single spindle drive, comprising a Maschinenge- stell, which receives a plurality of jobs, the control technology divided into several sections, wherein a section includes several jobs, and per workstation a spindle unit (200) with a spindle (201 ) and a spindle drive (203) is provided, and per spindle unit (200) a spindle drive electronics unit (105) is provided, further comprising a machine control unit (101) for controlling the spindle units (200) and a section electronics unit (112) per section (160), which are connected to the machine control unit (101) via a data line (133), to each of which a section electronics unit (112) a plurality of spindle drive electronics units (105) via a data line (134 ), which are controllable by the machine control unit (101) via their associated section electronics unit (112), characterized in that a plurality of spindle drive electronics units (105) of a section and the section electronics unit (3) on a common Sectional printed circuit board (102.1) are arranged, and the spindle drive electronics units (105) via data lines in the form of printed conductors (134) with the sector nektronik unit (112) are connected and the section electronics unit (112) via a connection interface (135) and data line (133) to the machine control unit (101) is connected, and the spindle units (200) at defined intervals from each other are fastened on a spindle bank (204) extending in the machine longitudinal direction (175), and the printed circuit board (207) is fastened by a fastening system in the corresponding section area to the spindle of the spindle, preferably below the spindle.

3. spinning or twisting machine according to claim 1, wherein on the at least two printed circuit boards (102.1-102.4), the power supply to the power stages and / or to the electronics of the spindle drive electronics units (105) via conductor tracks (134, 141, 142), wherein the section board (102.1) one or more

Includes connection interfaces (135) to an external power supply, and the circuit boards (102.1-102.4) are interconnected so that the power supply to the individual spindle drive electronics units (105) on the circuit boards (102.1-102.4) of a control section (160) the segmentation board (102.1) takes place.

4. Spinning or Zwimaschine according to any one of claims 1 to 3, wherein the section electronics unit (112) via a connection interface (135) with a data line (133), in particular a data bus, is connected to which further section electronics units (112 ) and the engine control unit (101) is connected.

5. spinning or twin machine according to one of claims 1 to 3, wherein the section circuit board (102.1) via a further, separate connection interface (144) with an external power supply (146) is connected.

6. spinning or twisting machine according to one of claims 1 to 5, wherein the spindle drive electronics units (105) mounted on the circuit boards (102)

Plug-in connections (113) while making a plug connection with the spindle drives (203) is electrically connected.

7. spinning or ditching machine according to one of claims 1 to 6, wherein the Spindelantriebselektronik Eiπheiteπ (105) a Schnittstel / enelektronik ('/ 53), / πs- particular one or more digital I / O interfaces for connecting a

Display and / or a start / stop switch (107) and lead away from the spindle drive electronics units (105) each have a signal and supply line (108) for a display and / or a start / stop switch (107).

8. spinning or twining machine according to one of claims 1 to 7, wherein in machine longitudinal direction (175) in succession a plurality of sections each having at least two printed circuit boards (102.1-102.4) are arranged, one of the printed circuit boards in each case a section printed circuit board (102.1) is.

A spinning or twisting machine according to any one of claims 1 to 8, wherein a spindle drive electronics unit (105) includes a controller (151), a power stage (152) and interface electronics (153).

10. A spinning or twisting machine according to any one of claims 1 to 9, wherein the section electronics unit (112) includes a controller (131) and an interface electronics (132).

11. spinning or twisting machine according to one of claims 1 to 10, wherein the supply voltage for supplying the spindle drives (203) via a connection interface (144) of the section printed circuit board (102.1) fed and on the circuit boards (102.1-102.4) via conductor tracks ( 141) is supplied to the power stages (152) of the spindle electronics units (105).

12. Spinning or twisting machine according to one of claims 1 to 11, wherein the supply voltage for supplying the spindle drive electronics and / or section electronics via a further connection interface (145) of the section printed circuit board (102.1) supplied or from the supply line for the spindle drives (203) removed and on the circuit boards (102.1-102.4) via tracks

(141) is supplied to the spindle drive electronics units (105) and / or the section electronics unit (112).

13. spinning or twisting machine according to claim 12, wherein on the section circuit board (102.1) a transducer (104) is mounted, which an input voltage and optionally input frequency into an output voltage and possibly an output

Frequency converts, with which the spindle drive electronics and / or the section electronics on the circuit boards (102.1-102.4) are fed.

14. Spinning or twisting machine according to one of claims 1 to 13, wherein the control engineering sections (160) each extend along a machine side (82) over a certain number of successive jobs in the machine longitudinal direction.

15. spinning or twisting machine according to one of claims 1 and 3 to 14, wherein the spindle units (200) at defined intervals to one another in a machine longitudinal direction (175) extending spindle bank (204) are fixed, and the circuit boards (207) via a Attachment system in the corresponding section area at the spindle bank, preferably below the spindle bank, are attached.

16. spinning or twisting machine according to claim 2 or 15, wherein the spindle drive electronics units (105) on the circuit board (207) via connectors with the spindle drives (203) are electrically connected, and a plug connection in each case one on the printed circuit board (207) applied first plug connection (208a) and a directly or indirectly, in particular via a spindle unit, with the spindle bank (204) connected to the second plug connection (208b) , wherein the circuit board (207) via the connectors is attached directly or indirectly to the spindle bank (204).

17. spinning or twisting machine according to claim 2, 15 or 16, wherein the printed circuit boards (207) are fastened below the spindle and bank of a housing (205) are covered, wherein the housing means, in particular webs (211, 212) and / or Ribs for supporting and / or fixing the circuit boards (207) relative to the spindle bank (204) included.