EP0832997B1 - Control system for a textile machine - Google Patents

Description

The invention relates to a control system for a textile machine, especially a ring spinning machine, which has a variety of manufacturing locations, in particular Spinning stations, which has sections in common can be monitored.

A monitoring system is in DE-30 05 746 A1 for a textile machine with a large number of similar ones Treatment stations for the treatment of a corresponding number of threads described in which each station emits an electrical measurement signal Sensor. The sensors of the treatment stations are grouped together. Everyone A monitoring unit is assigned to the sensor group The monitoring units are common System display and control device connected. The monitoring units are used to information received from the sensors of a common Supply data processing unit, which Is part of the display and control unit

In this known surveillance system due to the monitoring units certain simplification in data collection or - collection result. After the actual However, operating functions are practically exclusively which specifies a common control unit are and run is a problem mutual adjustment of the operation of each Treatment stations and thus an effective one Overall regulation of the system is not easy possible.

DE-29 46 031 A1 describes a device for switching off an electromotive single spindle drive in a textile machine, which for further Evaluation of a possibly at a Malfunction occurring and causing the shutdown Signals additionally with a device to interrupt the material supply to a drafting system or delivery plant and with a suction device is connected in this known device is a once won message for triggering different functions, one mutual adjustment of the operation of each Production or spinning stations and thus an optimization overall regulation of the system is likely also not be feasible here.

In the article (Microelectronics - Current and Future Areas of Application in Spinning Mills "by Marcel Zünd (Melliand Textile Reports 6/1985, 5.401 ff.) A hierarchical control system for a rotor spinning machine is known, in which signals detected by production site electronics via section control units to a machine -Control unit managed and centrally recorded there.

The invention has for its object to further increase the productivity of a machine constructed according to the preambles of claims 1 and 2.

This object is achieved in the method according to the preamble of claim 1 or the device according to the preamble of claim 2 by the feature of the characterizing part of claim 1 or claim 2.

Because of this training, even at a large one Number of to be monitored and controlled Production sites with little effort always without problems such an overall regulation of the textile machine feasible, for example, in view for optimal production and effective Basic and position regulation the operating conditions of the individual production sites repeatedly are tunable. Uie leave manufacturing costs not least because of the minimal wiring effort reduce to a minimum. Further the individual functional areas are clear from each other separable. Which is for the control of the textile machine resulting variation possibilities are not recently increased considerably by the fact that the different hierarchical levels Section control units and production electronic circuits Assemblies with their own intelligence are. There are several on several hierarchy levels Subsystems before which the machine stone unit is assigned as a master, for example. So is to control and operate the entire textile machine required intelligence on different Split levels. In a direction perpendicular to the respective hierarchy levels is therefore practical no wiring required. The division of the Functions at the different hierarchy levels can now easily, for example, also according to cost criteria be made.

Advantageously, not only the respective product location electronics, but additionally or alternatively also the respective section control unit automatic execution of at least part of the Operating functions designed. In addition to the parent machine control unit also on assemblies provided in the lower hierarchy levels autonomously at least individual operational functions To run.

Here, the production electronics in question or section tax units, for example for the autonomous execution of one or more of the following Functions thread break detection, match stop, Single spindle drive control, thermal monitoring the single spindle drives, match change, Spindle speed measurement, thread tension measurement, Communication with an assigned wall-mounted automat, Spinning station operator guidance and / or others Be designed sensor functions.

According to a preferred embodiment variant provided that of a respective production site assigned drive via the assigned production site electronics or the higher-level section control unit electronically and expediently can also be switched off by means of a hand switch is. In principle, however, a respective spinning station can also be switched off by the master, which for certain Incidents are particularly useful.

According to a further advantageous embodiment variant the higher-level machine control at least for one Part of the operational functions for a control intervention in the Production sites preferably via the relevant section control unit and the associated production site electronics designed. At least a parent mutual Adjustment of the respective operating parameters can accordingly in With regard to optimal overall control directly through the Machine control unit can be made.

For example, the machine control for the function functions of the disrupted production site, Switch on the match stop and / or display one Intervene to control the fault in the production facilities.

The individual drives of the production sites are expedient each by one over a feed frequency speed-controlled motor formed, the respective target frequency can preferably be specified via the machine control unit is.

In particular, the machine control unit can start and / or Sequence control for the textile machine in question include, for example, both in a normal Shutdown as well as an emergency shutdown in the event of a power failure can take effect. In the event of a power failure, however ensure that the machine comes to a standstill the required energy, for example from secondary sources or provided by motors working as generators becomes. With such a sequence control, it is preferred as previously described, again a division of the Functions given at the different hierarchy levels.

The section control units are advantageously through a data bus connected to each other on which the machine control unit Has access. This data bus extends expediently along the respective textile machine.

With regard to an optimal flow of information and a It is advisable to reduce the cabling effort if all data from and to the production sites or their Production site electronics by the assigned section control unit are controllable and concentrateable.

At least part of that from the sensors of the production sites Detected signals can be made via the production electronics in question and the higher-level section control unit for an evaluation and / or display of the machine control unit be deliverable. However, it is at least at individual production sites to provide an advertisement.

The machine control unit is responsible for such an evaluation and / or display, for example, a thread break, a manual stop, representing the spindle speed and / or the like Signals can be fed.

In a textile machine manufactured in section construction is the summary of the production sites into sections and the corresponding assignment of a respective section control unit advantageously due to the manufacturing Subdivision of the machine specified. The constructive Using such a modular principle enables one Pre-assembly in sections in the manufacturer, what the assembly times considerably reduced in the spinning mill.

The sections formed can according to a further embodiment of the invention across machine pages his.

A thread break and / or an increased thread tension is preferred through the respective production site electronics about the current or power consumption of each The electric drive assigned to the production site can be determined.

Fig. 1

eine schematische Darstellung eines Teils des Steuersystems für eine Ringspinnmaschine, und

Fig. 2

in ebenfalls schematischer Darstellung eine Produktionsstellenelektronik des in Fig. 1 gezeigten Steuerungssystems.

The invention is explained below using an exemplary embodiment with reference to the drawing; in this shows:

Fig. 1

a schematic representation of part of the control system for a ring spinning machine, and

Fig. 2

also a schematic representation of a production site electronics of the control system shown in FIG. 1.

1 shows a control system 10 for a textile machine, in particular a ring spinning machine is shown.

The ring spinning machine comprises a large number of spinning positions, which according to the production-related division of the ring spinning machine manufactured in a modular principle are summarized.

Each production site is a production site electronics 12 to 22 assigned to the autonomous Execution of at least part of the operating functions designed is.

Each has a large number of production locations, i.e. Spinning stations, comprehensive section is a section control unit 24 to 34 assigned. Section control units 24 to 34 are the respective production site electronic circuits 12 to 22 superordinate and are therefore in a higher hierarchical level.

The section control units 24 to 34 are via a data bus 40 with a higher hierarchical level provided machine control unit 36 connected.

In Fig. 1 there are only three production sites for each section or production site electronic circuits 12 to 22 indicated. The number of production points can however, be much higher. For example, one Section 2 x 24 spindles assigned to the machine side his.

2 is one of the production site electronic circuits 12 to 22, which measurement signals from a Thread monitor FW receives and output signals for a match stop and deliver an ad.

For example, via one and the same data interface 42 Information about the speeds and / or thread breaks transmitted become. The spindle in question or the one assigned to it Drive 44 can, for example, in the event of a thread break through the production site or spinning station electronics 12 be shut down autonomously.

The display for a respective spindle can be sent directly from the thread monitor or can also be switched on from the master system, which in addition to the production site electronics 12 to 22 and the section control units 24 to 34 also the machine control unit 36 includes, for example, a microprocessor can be.

It is also conceivable to display only a few spindles, for example to activate a section.

A respective production site electronics 12 to 22 and / or a relevant section control unit 24 to 34 is in particular for autonomous execution of at least one Part of the operational functions designed.

This also applies to the function groups in the lower hierarchy levels executable functions include, for example the functions thread break detection, sliver stop, single spindle drive control, Match change, spindle speed measurement, Thread tension measurement, spinning station operator guidance and / or other sensor functions.

2 can be assigned to a respective production site Drive 44 via the associated production site electronics be switched off by means of a hand switch 38. An external shutdown can be made via an input 46 respectively.

In particular for a higher overall regulation of the Textile machine and especially mutual coordination The operation of the individual production sites is the machine control unit 36 at least for part of the operational functions for a tax intervention in the production sites designed. Such a control intervention takes place via the relevant section control units 24 to 34 and production site electronic circuits 12 to 22

Such an intervention in the production sites, i.e. Spinning positions, can, for example, stop the functions the disturbed production site, switching on the match stop and / or display of a fault.

In the described embodiment, the individual drives 44 of the production sites each by an engine formed, which is speed-controlled via a feed frequency is. Any production site electronics or the higher-level section control unit with at least one frequency converter or an inverter. The respective target frequency is expediently above the machine control unit 36 can be predetermined.

The section control units 24 to 34 with each other and extends with the machine control unit 36 connecting data bus 40 along the relevant textile machine.

Part of those recorded by the sensors of the production sites Signals are sent via the relevant production site electronics 12 to 22 and the higher-level section control unit 24 to 34 for an overall evaluation and / or display supplied to the machine control unit 36. Here you can the signals, for example, the operating conditions thread break, Manual stop, as well as the spindle speed and / or the like represent.

While in the illustrated embodiment, a left Branch and a right branch of the data bus on the two machine sides a ring bus is also provided or conceivable star bus. This data bus can, for example be designed as a copper line or as a light guide. Nevertheless, there are both cross-machine sections as well as separate sections on each side of the machine.

A thread break and / or an increased thread tension is preferred through the respective production site electronics 12 to 22 on the current or power consumption of each Production location associated electric drive 44 can be determined. Instead, however, a thread sensor or the like.

Claims (2)

1. A method of controlling a textile machine, comprising a plurality of production stations, in particular spinning stations, in which method the production stations are jointly monitored section-wise, wherein each production station has associated therewith a respective production-station electronic unit (12 to 22), at least part of the operating functions are performed autonomously in each case by means of each production-station electronic unit (12 to 22), each section comprising a respective plurality of production stations has associated therewith a section-control unit (24 to 34) superposed on the production-station electronic unit, the section-control units (24 to 34) have associated therewith a machine-control unit (36) which is provided in a further superposed hierarchy plane and to which signals for an overall evaluation and display are supplied, and which is designed for a superposed overall regulation for a control intervention, and the respective production-station electronic unit (12 to 22) is designed to perform one or more of the functions autonomously, characterized in that the signals detected by the production-station electronic unit are additionally displayed for the guidance of the spinning-station operator or communication with an associated automatic moving unit.
2. A textile machine, with a plurality of production stations, in particular spinning stations, which can be jointly monitored section-wise, wherein each production station has associated therewith a production-station electronic unit (12 to 22) designed to perform at least part of the operating functions autonomously, each section comprising a respective plurality of production stations has associated therewith a section-control unit (24 to 34) superposed on the production-station electronic unit, the section-control units are connected to a machine-control unit (36) which is provided in a further superposed hierarchy plane and to which signals for an overall evaluation and display are supplied, and which is designed for a superposed overall regulation for a control intervention, and the respective production-station electronic unit (12 to 22) is designed to perform one or more of the functions autonomously, characterized in that a display is additionally arranged at the production station in conjunction with the production-station electronic unit for the guidance of the spinning-station operator or communication with an associated automatic moving unit.

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