EP1910203A1

EP1910203A1 - Textile machine with yarn monitoring

Info

Publication number: EP1910203A1
Application number: EP06761234A
Authority: EP
Inventors: Philipp Ott; Peter Pirani
Original assignee: Uster Technologies AG
Current assignee: Uster Technologies AG
Priority date: 2005-07-27
Filing date: 2006-07-21
Publication date: 2008-04-16
Also published as: WO2007012212A1; JP2009502697A; CN101218161A

Abstract

A spinning machine (1) comprises a group of spinning points (3.1-3.n), a processor (2) and a spinning carriage (40). Parallel data transmission means (5.1- 5.n) for permanent simultaneous transmission of time-critical data between each of the working points (3.1-3.n) and the section control unit (13.1) have as simple and economical form as possible. Additionally, serial data transmission means (6) are provided for time-uncritical data transmission between just one selected working point (3.3) and the spinning carriage (40). The spinning machine (1) is simpler and more economical due to this division of data transmission.

Description

TEXTILE MACHINE WITH COOKING MONITORING

AREA OF EXPERTISE

The present invention is in the field of spinning and in particular yarn monitoring in spinning or rewinding yarn, and relates to a textile machine, for example a spinning or rewinding machine, a yarn monitoring device and a yarn monitoring system for such a textile machine and a method for yarn monitoring at a workstation a textile machine, according to the preambles of the independent claims.

STATE OF THE ART

Devices and methods for yarn monitoring in textile machines are known. The aim of yarn monitoring is to ensure the desired yarn quality. A time course of yarn parameters such as mass per unit length and / or diameter is recorded. The detection takes place with capacitive, optical and / or other sensors. From the recorded temporal. Course of the yarn parameters can be closed by suitable evaluation of unwanted deviations from a desired value. Such defects can occur statistically or periodically. Depending on the evaluation of such defects, various reactions can be triggered automatically. In the case of a severely disturbing defect, the spinning or rewinding operation can be interrupted in order to remove the defect from the yarn, or a warning signal can be emitted. The measurement results can be recorded in a statistic that provides information about the yarn quality.

It has been customary for many years, at each workstation, for example a spinning or rewinding station, to attach a textile yarn machine to an individual yarn monitoring device which continuously monitors the corresponding yarn during its passage through the workstation. An example of such a yarn monitoring device, also called yarn cleaner, z. In GB-638,365. Yarn monitoring devices usually include a simple local evaluation unit for evaluating the sensor signals. The evaluation leads to the decision as to whether a yarn cut should be made or not; in the former case, the evaluation unit outputs an editing signal to a cutting device attached to the workstation. Usually several yarn monitoring devices are connected to a cleaner control unit, which on the one hand monitors and controls the yarn monitoring devices, on the other hand registers and evaluates events such as yarn cuts and their triggers. The cleaner control unit communicates with a machine control unit of the textile machine. The connection between a yarn monitoring device and the cleaner control unit is made via a data transmission line, preferably a data bus, to which both the cleaner control unit and a plurality of yarn monitoring devices are connected. DE-39'28'831 Al and DE-195 '48' 667 Al give examples of a possible embodiment of a data bus and the infrastructure required for this purpose; however, the data buses described therein serve for communication between the workstations and the machine control unit and therefore have nothing to do with yarn monitoring. With fast-running yarns and a large number of yarn monitoring devices connected to a cleaner control unit, large amounts of data accumulate in a short time, the handling of which places high demands on the electronics in the individual yarn monitoring devices, the data bus, the cleaner control unit and the corresponding interfaces. It is also known, in addition to parameters that relate to the yarn, to also measure other parameters that do not relate to the yarn. Thus, EP-O '650' 915 Al teaches the use of a mobile cone changer of a rewinding machine for detecting quality parameters of the cones. Such quality parameters are z. As the cone diameter, the winding density, the radial or axial deformation of the cone, etc. These parameters can be detected in a relatively simple manner by the Konenwechsler a camera for monitoring the cones is attached. As a result, in addition to the data from the yarn monitoring devices, further large amounts of data are generated, which also have to be transmitted and processed. The additional function of the cone monitoring makes the rewinding machine more expensive and makes it more complex.

In earlier years, it was hardly technically possible to continuously transmit the data relating to an individual yarn recorded by a yarn monitoring device. Therefore, according to US-3,885,232 A, the yarn monitoring devices are equipped with data memories which are polled periodically and serially, ie one after the other, by a cleaner control unit. A similar teaching is also the US-4,137,699 A, but the data is not transmitted via electrical lines to a stationary cleaner control unit. Instead, the cleaner control unit is located on a mobile piecing truck, the the individual spinning stations can start. The data from that spinning station, in which the piecing is currently being transmitted contactlessly to the cleaner control unit. These serial data transmission systems have the obvious disadvantage that in case of serious defects can not be intervened in time.

More recently, technical development has made it possible to keep data from many jobs in parallel, ie. H. constantly and simultaneously, to the cleaner control unit to transmit and evaluate there or process. This is z. In US-A-4,984,749. However, a parallel data transmission is still associated with a rather high technical complexity and consequently with high costs. The electronics in the individual yarn monitoring devices are complex, and multiple expensive parallel bus lines have to be laid as data transmission lines, which in turn requires the presence of matching, more expensive interfaces in all yarn monitoring devices and the cleaner control unit.

The object of DE-199 07 07 684 A1 is to improve the control and information system of a textile machine and, in particular, to make its manufacture more cost-effective, by the processor of a respective workstation additionally evaluating the sensor signals in addition to controlling the workstation and the yarn cleaning controls. There is a common data bus for communication between the workstations and a machine control unit.

The DE-195 '05' 023 Al proposes to save the data bus at all, by the machine control unit is arranged on the piecing. The machine control unit and the control device of each work station are equipped with data transmission means for a bidirectional data exchange between the machine control unit and the respective control device. A data exchange always takes place when the piecing carriage is positioned in front of the respective workstation. On the one hand, the data transmission means are used to read into the control device of the workstation work, part or yarn quality-related data. On the other hand, yarn quality data measured via the data transfer means are read into the engine control unit, thereby enabling the production of yarn quality protocols.

According to DE-101 '59' 153 A1, the piecing carriage is equipped with a sensor and an evaluation device for monitoring the yarn quality. With this sensor and the evaluation device, a normalization value of the yarn quality is detected at each workstation and via appropriate data buses via the machine control unit Textile machine transferred to the appropriate workplace. The normalization value is used to calibrate the yarn cleaner. Such a calibration of all yarn cleaners ensures that the yarn quality is measured consistently and reproducibly at all workstations both locally and temporally.

PRESENTATION OF THE INVENTION

It is therefore an object of the present invention to provide a textile machine with yarn monitoring, which is technically less expensive and cheaper to produce than the known textile machines. It is also an object of the invention to provide a yarn monitoring device and a yarn monitoring system for a textile machine, which avoid the disadvantages mentioned above. A further object of the present invention is to specify a method for yarn monitoring at a workstation of a textile machine which does not have the abovementioned disadvantages.

These and other objects are achieved by the yarn monitoring device according to the invention, the yarn monitoring system according to the invention, the textile machine according to the invention and the method according to the invention, as described in the independent US Pat Claims are defined. Advantageous embodiments are given in the dependent claims.

The invention is based on the idea to make those components of the yarn monitoring system, which are present in large numbers, simple and inexpensive, and to equip a few components with a slightly higher complexity and functionality. In particular, the invention focuses on the evaluation and transmission of the yarn-related data.

An analysis of the prior art shows that expensive yarn monitoring components, which are present in large numbers in the textile machine, the yarn monitoring devices associated with each spinning station, the data lines from the yarn monitoring devices to a central control unit and the corresponding interfaces. This is where the invention comes in, by aiming to simplify these components and make them cheaper. It does this by reducing its functions to the essentials. For this purpose, the data determined by the yarn monitoring device at a workstation are preferably divided into at least two data categories:

(i) time critical data that is essential to the job and / or rapid intervention in the job Require operation. The time-critical data is sent in parallel, ie continuously and from every workstation. They are preferably transmitted directly to a control unit of the textile machine.

(ii) Non-critical data that does not require quick intervention in the work process. The non-time critical data are only serially, d. H. only temporarily and in each case only from one job. They are preferably transmitted to the machine control unit of the textile machine. This reduces the amount of data to be transmitted in parallel or the required parallel data transmission rate.

The criteria for such a division are known per se from conventional yarn cleaners. Typically, a table or coordinate system is provided having a length on its horizontal axis and a mass or diameter of the yarn on its vertical axis. In this coordinate system, a so-called cleaning limit can be set, ie a curve whose exceeding or falling below an untolerable yarn error means. Any deviation from a nominal value detected on the yarn is entered in this coordinate system and tested for tolerability based on the cleaning limit. These and other distinguishing criteria are for. B. in the writings US-3'577'854 A, CH-678'173 A5 or EP-O '877' 108 Al, the disclosure of which is hereby incorporated by reference into the present specification, is described in detail.

Accordingly, according to the invention simple, inexpensive parallel data transmission means for the time-critical data and additionally serial data transmission means for the non-time-critical data are provided. Elements of the serial data transmission means are preferably located on a mobile module which may be mounted on an already existing mobile service unit such as a starter truck of a spinning machine or a traveling fan of a rewinding machine. On such a mobile service unit, a mobile measuring head for detecting data relating to the yarn may be attached. The parallel and / or serial data transmission means may preferably transmit data in both directions. The mobile module mainly receives recorded measurement data relating to the yarn. To work are z. B. setting data (setup data) for the yarn monitoring device.

The yarn monitoring device according to the invention for a workstation of a textile machine, for example a spinning or

Rewinding machine, includes a sensor for detecting

Data that has a time history of at least one Characteristic of a yarn, and data output means for outputting data obtained from the acquired data. The yarn monitoring apparatus also includes data dividing means for dividing the data to be output into time-critical data requiring rapid intervention in the textile operation, and non-time critical data requiring no such intervention. The yarn monitoring apparatus further includes storage means for storing the data obtained from the acquired data. The data output means includes parallel data output means for permanently outputting the time-critical data and serial data output means different from the parallel data output means for temporarily outputting the non-time-critical data stored in the memory means.

The yarn monitoring system according to the invention for a textile machine, for example a spinning or rewinding machine with a plurality of jobs, includes a plurality of yarn monitoring devices to be associated with the work stations for acquiring data representing a time profile of at least one property of the respective yarn. The yarn monitoring system further comprises a yarn monitoring control unit for controlling the yarn monitoring devices and for evaluating acquired data, and data transmission means for transmitting data obtained from the acquired data from each yarn monitoring device for Yarn monitoring control unit. Each of the

Garnüberwachungsvorrichtungen. is an inventive GarnüberwachungsVorrichtung described above. The data transfer means are serial data transfer means which include the serial data output means.

The textile machine according to the invention, for example a spinning or rewinding machine, includes a plurality of work stations for yarns, a workstation control unit for controlling the plurality of workstations, and a yarn monitoring system for monitoring a time course of at least one property of the yarns. The yarn monitoring system is an inventive yarn monitoring system described above, wherein each workstation is associated with a GarnüberwachungsVorrichtung. The textile machine additionally comprises parallel data transfer means for transferring data obtained from the acquired data from each yarn monitoring device to the workstation control unit, which parallel data transfer means include the parallel data output means.

In the inventive method for yarn monitoring at a workstation of a textile machine, for example. A spinning or

Rewinding machine, data representing a time course of at least one property of a yarn is detected. Data obtained from the acquired data is output. The data to be output is divided into time-critical data requiring a quick intervention in the textile operation and non-time-critical data requiring no such intervention. The time-critical data is output permanently, and the non-time critical data is stored and output only temporarily.

The yarn monitoring system of the textile machine according to the invention is simpler and less expensive than the previously known yarn monitoring systems comparable

Functionality. In addition, it offers an additional

Advantage: Statistical quality data, for example spectrograms, can be determined from the serially transmitted non-time-critical data, which has hitherto been available either with a large number of expensive, parallel interfaces or in additional

Laboratory tests were possible. The inventive

Textile machine thus offers the possibility of a cost-effective ongoing (online) laboratory testing.

TITLE OF DRAWINGS

Hereinafter, preferred embodiments of the invention will be explained in detail with reference to the accompanying drawings.

The drawings and the explanations refer to the

Example of a spinning machine, preferably one Rotor spinning machine. However, this is not to be understood as limiting; The invention includes not only spinning machines, but also rewinding machines and other textile machines in which monitoring of elongated structures such as yarn, roving, belts, etc. takes place.

Figures 1 and 2 show schematically block diagrams of two

Embodiments of an inventive

Spinning machine, and

FIG. 3 shows a flow chart of an embodiment of the invention

Procedure.

EMBODIMENT OF THE INVENTION

A schematic of some elements of a spinning machine 1 according to the invention is shown in FIG. An elongated machine frame 11 carries a plurality of spinning stations 3.1, 3.2, ..., 3.n. Modern spinning machines comprise a few hundred such spinning stations, which are each combined in sections 12.1, 12.2,..., 12.m to n spinning stations, m and n are natural numbers, typically where m «16, n« 20. If nothing else mentioned, the following explanations relate to a respective section 12.1. Of course, they also apply to the special case m = 1, ie for a spinning machine 1 without sections, and mutatis mutandis for a more general case of another Subdivision. The drawing is also schematic in that, for the sake of simplicity, the spinning stations 3.1, 3.2, ... m, 3.n are shown lying side by side on only one side of the machine frame 11; Usually, a two-sided arrangement of the spinning stations is preferred.

Each spinning station 3.1-3.n preferably includes a measuring head 30.1-30. n for detecting a time profile of at least one property of a respective yarn (not shown). For this purpose, each measuring head includes 30.1-30. n at least one capacitive, optical and / or other sensor. An example of such a measuring head with a capacitive sensor is given in EP-924'513 A1. From the recorded time profile of the at least one yarn property can be closed by suitable evaluation on unwanted deviations from a desired value. Depending on the nature of the deviation, appropriate measures are taken which may include interruption of the spinning process and removal of a defect from the yarn, a yarn cut on a rewinder, emission of a warning signal, detection in a statistic and / or other reactions.

Furthermore, the spinning machine 1 includes at least one section control unit 13.1-13.m, and preferably a section control unit 13.1-13.m for each section 12.1-12.m. Each section control unit 13.1-13.m controlled and controls a plurality of spinning stations 3.1-3.n. For this purpose, the section control unit 13.1 by means of suitable data transmission means, for. B. a section bus, connected to each spinning station 3.1-3.n their section 12.1; however, in order not to overload the drawing, these data transfer means are not shown in FIG. On the other hand, important in connection with the present invention are first, parallel data transmission means 5.1-5.n which serve for the data transmission between each measuring head 30.1-30.n and the section control unit 13.1.

The present invention aims to reduce the initial cost of the spinning machine 1 and to simplify the spinning machine 1 and its yarn monitoring system. Therefore, it starts with those elements which are present in a multitude: the spinning stations 3.1- 3.n and the parallel data transmission means 5.1-5.n. These are simplified by reducing their functions to the bare necessities. Specifically, this means that the of a measuring head 30.1-30. n data obtained in a spinning station 3.1-3.n can be divided into at least two categories of data:

(i) Time-critical data requiring rapid intervention in the spinning process. The time-critical data can z. B. be used to trigger a shutdown or interruption of the spinning process at the relevant spinning station. You can provide information about contain the mass per unit length or the thickness of the yarn, in particular on their individual deviations from a target value such as nits, thick areas or thin places. The time-critical data are transmitted in parallel, ie continuously and from each spinning station 3.1-3.n, to the section controller 13.1, which, if necessary, intervenes immediately in the spinning process. This ensures that no unacceptable defects remain in the yarns. (ii) Non-critical data that does not require rapid intervention in the spinning process. The non-time-critical data can contain all measured data recorded by a measuring head 30.3 or only parts thereof. They preferably contain information about the mass per unit length or about the thickness of the yarn, in particular about a statistical distribution of the mass per unit length or thickness, from which information about the quality of the yarn belonging to the respective spinning station 3.3 and / or about systematic errors in the spinning process is won. The non-time-critical data are transmitted only serially, ie only temporarily and not from all spinning stations 3.1-3.n at the same time, to the section controller 13.1. This reduces the amount of data to be transmitted or the required data transfer rate. To transmit the time-critical data, the parallel data transmission means 5.1-5.n are made available. They are "parallel" in that they serve for the permanent simultaneous transmission of data relating to each yarn between each of the measuring heads 30.1-30 n and the section control unit 13.1, the expression "each of the measuring heads" not necessarily covering all the measuring heads of the spinning machine 1 but possibly only all the measuring heads 30.1-30.n of a section 12.1 or a differently defined set of measuring heads. The parallel data transmission means 5.1-5.n can be designed simply and inexpensively, preferably as a simple electrical line. Accordingly, the interfaces between the parallel data transmission means 5.1-5.n and the spinning stations 3.1-3.n or the processor unit 2 are correspondingly simple and cost-effective. The parallel data transmission means 5.1-5.n are preferably based on unilateral data transmission by a respective measuring head 5.1-5.n. 5.n set up the section control unit 13.1. The time-critical data can be transmitted in the form of binary signals which can assume the values "0" or "1 ^w ." For example, three types of signals can be provided:

(a) a short signal with the meaning "short thick spot, spin off",

(b) a time-long signal meaning "long thick spot, spinning off", and (c) a time-continuous signal with the meaning "output alarm".

Second, serial data transmission means 6 serve to transmit the non-time-critical data. They are "serial" insofar as they serve to transmit data relating to the particular yarn between only one selected spinning station 3.3 and one mobile module 4. If this data transmission is completed, another spinning station is selected and the mobile module 4 is transported to it and data are transmitted between this other spinning station and the mobile module 4. The respective spinning station 3.3 is selected from all spinning stations 3.1-3.n of the spinning machine 1 or from only one group of spinning stations, for example from the spinning stations 3.1-3. The selection of the respective spinning station 3.3 can take place randomly or specifically according to specific criteria The serial data transmission means 6 can use light waves, infrared waves, radio waves, electromagnetic induction or an electrical line for the data transmission.

The mobile module 4 can be mounted on an existing mobile service device 40 of the spinning machine 1, which automatically to a selected spinning station 3.3. is movable. Preferably, the service device 40 is a piecing or piecing robot for starting a Spinning. In the case of the rewinding machine, the

Service facility 40 a commonly available

Be hiking fan. However, the mobile module 4 can also be added specifically for its purpose to the spinning machine 1. When mobile module 4, it may also be a hand-held device such. B. a personal digital assistant (staff

Digital Assistant, PDA) or a portable personal computer

(Laptop) act.

If the mobile module 4 is mounted on a piecing carriage 40 of the spinning machine 1, preferably that spinning station 3.3 is selected for serial data transmission, in which the piecing carriage 40 just has to perform a piecing operation, or one of the adjacent spinning stations 3.2, 3.4. Data transmission means

The mobile module 4 is preferably assigned to an evaluation unit 43 for evaluating the non-time-critical data. In the embodiment of Figure 1, the evaluation unit 43 with respect to the machine frame 11 is stationary. To transmit the second data set from the mobile module 4 to the evaluation unit 43, first further data transmission means 61 are present. The evaluation unit 43 may, but does not have to, be connected to a machine control unit 2 by means of second further data transmission means 62. The further data transmission means 61, 62 preferably include a data line, but may also operate without contact. The Machine control unit 2 is connected to the section control units 13.1-13 by means of suitable machine data transmission means 21, which may be embodied as a machine bus or as individual data lines. m the spinning machine 1 connected.

The serial data transmission means 6 can firstly be used to transmit non-time-critical measurement data relating to the yarn spun at the selected spinning station 3.3 from the measuring head 30.3 at the selected spinning station 3.3 via the mobile module 4 to the evaluation unit 43. Each measuring head 30.1-30. n is preferably equipped with storage means (not shown) in which detected time-non-critical measurement data are initially stored and later, when the spinning station 3.3 is selected, read out by means of the serial data transmission means 6.

Second, the serial data transfer means 6 can be used to transfer data to the selected spinning station 3.3. Such transmitted to the selected spinning station 3.3 data can z. B. adjustment data (setup data) for the measuring head 30.3. In these, a distinction can be made between static setting data and dynamic setting data. Static settings data are defined from the outset, absolute parameter limits that may not be exceeded to comply with a specific quality standards, eg. Deviations from a nominal value of the yarn thickness as a function of the length of the deviation. Dynamic settings data are relative, temporally possibly variable data such. B. an average of a yarn parameter, for example. The yarn thickness, over all spinning stations 3.1-3.n or a group of spinning stations. Such dynamic setting data can z. B. be useful for the determination of wrong yarn numbers after a change of the starting material for the spinning process.

For the data transmission by means of the serial data transmission means 6, it is advantageous if the mobile module 4 temporarily stops at the selected spinning station 3.3. This will normally apply in the case of a mobile module 4 mounted on a piecing carriage 40. But this is not necessary. In particular, contactless data transmission can also take place when the mobile module 4 is moving. Such data transfer without stopping can z. B. are used in a traveling fan of a rewinding machine.

Further, preferably in each section 12.1-12.m a power supply 14.1-14.m for the power supply of the measuring heads 30.1-30. m available. The power is applied z. B. via a power bus 15.1, or alternatively via individual supply lines. Figure 2 shows schematically an embodiment of an inventive spinning machine 1, in which the mobile module 4 itself is equipped with at least one mobile measuring head 41. The mobile measuring head 41 serves to detect at least one property, for example the mass per unit length or the thickness, of the respective yarn. The mobile measuring head 41 can be attached to the mobile module 4 or to the mobile service device 40 by means of a measuring head arm 42. The measuring head arm 42 is preferably movable such that, on the one hand, the attached mobile measuring head 41 can be brought to the respective yarn for a measurement, but on the other hand does not hinder a displacement of the mobile module 4 and the mobile service device 40 from one spinning station 3.3 to another. The Meßkopfarm 42 may be designed, for example. Swiveling and / or extendable. In the case of a piecing carriage 40, the mobile measuring head 41 is preferably attached to the piecing carriage 40 in such a way that it carries out the measurement at a selected spinning station 3.3, which is adjacent to that spinning station 3.2 at which the piecing process is currently being initiated. Several measuring head arms, each with one or more mobile measuring heads, can be attached to the mobile module 4. The serial data transmission means 6 are used for data transmission between the mobile measuring head 41 and the mobile module 4; For this purpose, they can, for. As infrared waves or radio waves use. Another difference between the embodiments of FIGS. 1 and 2 is that in FIG. 2 the evaluation unit 43 is integrated in the mobile service unit 40 or at least connected to it, so that it is movable together with the mobile module 4. In the embodiment of FIG. 2, there is no connection between the evaluation unit 43 and the machine control unit 2. The mobile module 4 is therefore autonomous. Its evaluation unit 43 independently selects the corresponding spinning stations 3.3 and evaluates the data determined there.

FIG. 3 is a flowchart schematically showing an embodiment of the method according to the invention. The time profile of at least one yarn property is continuously measured by the measuring head 30.3 101. The measured data are continuously evaluated in the relevant measuring head 30.3 102. On the basis of this evaluation, it is decided 103 in the measuring head 30.3 whether it is time-critical data or non-time-critical data. The criteria for this decision are known per se from conventional yarn cleaners ago, and z. For example, in the documents US 3'577'854 A, CH-678'173 A5 or EP-O '877' 108 Al described in detail. One possible criterion is z. B. an exceeding or falling below a cleaning limit. Time-critical data 104 are transmitted via the parallel data transmission means 5.3 immediately to the section control unit 13.1 105 to an action 105. The time-critical data are stored in memory means in the measuring head 30.3 108. On the other hand, non-time-critical data 107 are only stored 108 without immediately triggering an action. This process continues until a data transfer between the measuring head 30.3 and the mobile module 4 is possible and desirable. The measuring head 30.3 repeatedly checks 109 whether the mobile module 4 is in its vicinity. If this is the case, the stored data is transmitted via the serial data transmission means 6 to the mobile module 4 110. From there, they can be transmitted to the evaluation unit 43 for further use.

Of course, the two embodiments of Figures 1 and 2, as well as individual partial embodiments thereof, are combined. That means z. Example, that the mobile module 4 can exchange both data by means of serial data transmission means 6 with the selected spinning station 3.3, as well as by means of a mobile measuring head 41 can capture data at the same or another selected spinning position. With knowledge of the invention, those skilled in the art will be able to derive further embodiments which are not described directly in this document, but nevertheless fall within the scope of this patent right. LIST OF REFERENCE NUMBERS

1 textile machine

11 machine frame

12.1-12. m sections of the textile machine

13.1-13.m Section control units

14.1-14.m Power supply units

15.1-15.m energy buses

2 machine control unit

21 machine bus

3.1-3.n jobs

30.1-30. n Measuring heads for yarns

4 mobile module

40 mobile service unit

41 mobile measuring head

42 measuring head arm

43 evaluation unit

5.1-5.n parallel data transmission means

6 serial data transmission means

61 first further data transmission means

62 second further data transmission means

Claims

A yarn monitoring device (30.3) for a workstation (3.3) of a textile machine (1), for example a spinning or rewinding machine, comprising a sensor for acquiring data representing a time profile of at least one property of a yarn, and

Data output means for outputting data obtained from the acquired data, characterized in that the yarn monitoring device comprises data dividing means for

Dividing the data to be output into time-critical data requiring rapid intervention in the textile operation and non-time-critical data requiring no such intervention, the yarn monitoring apparatus further includes storage means for storing the data obtained from the acquired data, and the data output means for parallel data output means permanent output of the time-critical data and of the parallel data output means different serial data output means for temporary output include the non-time critical data stored in the storage means.

Yarn monitoring system for a textile machine (1), for example, a spinning or rewinding machine, with a variety of

Jobs (3.1-3.n), where the

Yarn monitoring system comprising a plurality of yarn monitoring devices (30.1-30.n) to be associated with the workstations (3.1-3.n) for acquiring data representing a time history of at least one characteristic of the respective yarn, a yarn monitoring control unit (43) for controlling the yarn monitoring devices (30.1 -30.n) and to

Evaluation of collected data, as well

Data transmission means for transmitting data obtained from the acquired data from each

Yarn monitoring device (30.1-30.n) for yarn monitoring control unit (43), characterized in that each of the yarn monitoring devices (30.1-30

Yarn monitoring device according to claim 1 and the data transmission means serial

Data transmission means (6) which are the serial

Data output means include.

Yarn monitoring system according to claim 2, wherein the yarn monitoring system further comprises a mobile module (4) which is movable to any yarn monitoring device (30.3) selected from the plurality of yarn monitoring devices (30.1-30.n), on the one hand by the serial data transmission means (6). is connectable to the selected job and on the other hand connected to the yarn monitoring control unit (43).

4. Yarn monitoring system according to one of the preceding claims, wherein the serial data transmission means

(6) use light waves, infrared waves, radio waves, electromagnetic induction, or electrical wiring for data transmission.

Yarn monitoring system according to one of the preceding claims, wherein the serial data transmission means (6) are adapted to data from the selected yarn monitoring device (30.3) to the mobile module (4) and / or data from the mobile module (4) to the selected yarn monitoring device (30.3) to transfer .

6. Yarn monitoring system according to one of the preceding claims, wherein the mobile module (4) at least one mobile measuring head (41) for detecting at least one property of a yarn includes.

Yarn monitoring system according to any one of claims 3-6, wherein the mobile module (4) is a portable electronic

Device such as a personal digital assistant or a personal computer.

8. textile machine (1), for example. Spinning or rewinding machine, including a plurality of jobs (3.1-3.n) for yarns, a workstation control unit (13.1) for controlling the plurality of jobs (3.1-3.n), and a Yarn monitoring system for monitoring a time characteristic of at least one property of the yarns, characterized in that the yarn monitoring system is a yarn monitoring system according to one of claims 2-7, wherein each workstation (3.1-3.n) is associated with a yarn monitoring device (30.1-30.n) and the textile machine (1) additionally comprises parallel data transfer means (5.1-5.n) for transferring data obtained from the acquired data from each yarn monitoring device (30.1-30.n) to the work station control unit (13.1) parallel data transfer means (5.1-5.n) containing parallel data output means.

9. Textile machine (1) according to claim 8, wherein the parallel data transmission means (5.1-5.n) each consist of a simple electrical line.

The textile machine (1) according to claim 8 or 9, wherein the textile machine (1) comprises a machine control unit (2) connected to both the yarn monitoring control unit (43) and the work station control unit (13.1).

11. Textile machine (1) according to claim 10, wherein the textile machine (1) has a plurality of

Workstation control units (13.1-13.m), all of which are connected to the machine control unit (2).

12. Textile machine (1) according to any one of claims 8-11 and claim 3, wherein the textile machine (1) is a mobile

Service facility (40), z. As a piecing or a traveling fan, and the mobile module (4) on the mobile service device (40) is mounted.

13. A yarn monitoring method at a workstation (3.3) of a textile machine (1), for example. A spinning or ümspulmaschine, wherein Data representing a time characteristic of at least one property of a yarn can be detected (101) and data obtained from the acquired data is output, characterized in that the data to be output is divided (103) into time-critical data (104) which is a fast

Require intervention (105) in the textile operation, and non-time critical data (107), no such

Require intervention, the time-critical data (104) is permanently output (106) and the non-time-critical data (107) is stored (108) and output only temporarily (110).

14. The method of claim 13, wherein the textile machine (1) comprises a plurality of workstations (3.1-3.n) and the time-critical data (104) permanently and simultaneously from each of the workstations (3.1-3.n) to a workstation control unit (13.1) 106).

The method of claim 13 or 14, wherein the non-time-critical data (107) is selected from only one of the plurality of workstations (3.1-3.n) Workstation (3.3) to a mobile module (4), which is moved to the selected job (3.3), transmitted (110).

16. The method of claim 15, wherein the mobile module (4) simultaneously performs the serial data transmission (106) and a service operation at a workstation (3.3).

17. The method of claim 15 or 16, wherein the mobile module (4) detects at least one property of the respective yarn.

18. The method according to any one of claims 15-17, wherein for the data transmission (106) between the selected

Workstation (3.3) and the mobile module (4) light waves, infrared waves, radio waves, electromagnetic induction or an electrical line can be used.

19. The method according to any one of claims 13-18, wherein the time-critical data (104) are used to trigger a shutdown of the textile work process at the selected job (3.3).

20. The method of claim any one of claims 13-19, wherein the time-critical data (104) provides information about the mass per Length unit or the thickness of the yarn included, in particular about individual deviations of a desired value of the mass per unit length or the thickness as Nissen, thick points or thin places.

21. The method according to any one of claims 13-20, wherein the non-time-critical data (107) information about the mass per

Length unit or the thickness of the yarn, in particular via a statistical distribution of the mass per unit length or the thickness, from which information about the quality of the selected job

(3.3) associated with yarn and / or systematic errors in the textile process.

22. The method according to any one of claims 15-21, wherein data from the mobile module (4) to the selected job (3.3) are transmitted.

23. Method according to claim 22, wherein the data transmitted to the selected workstation (3.3) are adjustment data for setting the selected workstation (3.3).

24. The method of claim 23, wherein the adjustment data includes static adjustment data having preestablished absolute parameter limits and / or dynamic adjustment data having relative, time varying data, and the dynamic ones Setting data are preferably derived from the serially transmitted data.