EP0648872B2 - Spinnstellenstörmelder und -qualifizierer - Google Patents

Spinnstellenstörmelder und -qualifizierer Download PDF

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Publication number
EP0648872B2
EP0648872B2 EP94116410A EP94116410A EP0648872B2 EP 0648872 B2 EP0648872 B2 EP 0648872B2 EP 94116410 A EP94116410 A EP 94116410A EP 94116410 A EP94116410 A EP 94116410A EP 0648872 B2 EP0648872 B2 EP 0648872B2
Authority
EP
European Patent Office
Prior art keywords
fault
yarn
group
spinning station
spinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94116410A
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German (de)
English (en)
French (fr)
Other versions
EP0648872A1 (de
EP0648872B1 (de
Inventor
Bernd Bahlmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt GmbH
Original Assignee
Rieter Ingolstadt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Rieter Ingolstadt GmbH filed Critical Rieter Ingolstadt GmbH
Publication of EP0648872A1 publication Critical patent/EP0648872A1/de
Application granted granted Critical
Publication of EP0648872B1 publication Critical patent/EP0648872B1/de
Publication of EP0648872B2 publication Critical patent/EP0648872B2/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in running material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/062—Electronic slub detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/60—Details of processes or procedures
    • B65H2557/65—Details of processes or procedures for diagnosing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a fault detector and qualifier and thereby with a device for assigning specific fault messages and a method for detecting and assessing the occurred incidents at a spinning station of a spinning machine.
  • Modern spinning machines work essentially automatically and at a particularly high speed.
  • a plurality of individual spinning stations are lined up and work independently of each other a preset yarn from a individually supplied sliver.
  • the sliver is dissolved with an opening roller and the dissolved fibers are passed via an air flow in a rotating at very high speed rotor, where the fibers are collected in a fiber collecting groove to subtract approximately centrally from the unilaterally open conical rotor a yarn or thread, which is guided over pulleys or rollers and possibly a traverse to be wound up on a spool.
  • a measuring device (measuring head) is usually provided, which is arranged between the yarn draw and take-up reel in the course of the yarn.
  • the Swiss patent mentions by way of example the foreign bodies in the yarn, such as shells, pieces of wood or bast fibers, it also mentions machine defects, non-circular draw cylinders or irregularities resulting from operating errors, such as unclean and twisted dust particles (flight).
  • the CH patent proposes the use of two criteria, namely the thread thickness and a length dimension. By adding the length dimension, short, relatively thick errors, which basically do not disturb much, are not recognized as error group 2, but assigned to error group 1. In contrast, if long, the average yarn cross-section only slightly exceeding thread sections are spun, they interfere sensitively, so that they are assigned to the basically significant error group 2.
  • the invention is therefore based inter alia on the problem not only to distinguish between a real disturbance and an irrelevant "disturbance", but to make a fault message and qualification at a spinning station, the comprehensive and accurate on the current status - better: the just occurred accident - informed.
  • fault groups shutdown of the spinning station, blocking of the spinning station, stopping of the spinning station or notification / warning for this spinning station are examples of possible hierarchies that can be individually determined and put together according to the invention.
  • the invention provides an allocation section which performs the qualifying evaluation of the yarn error measured by the evaluation stage via the measuring device.
  • error signals can also be input to the fault groups caused by the electronics or the mechanics, and the can not be measured on the yarn thickness, but are supplied via separate measurement signals of the assignment section.
  • the invention thus provides a whole lot more than the comprehensive and accurate information about the operating condition and the incident that just occurred, it allows through the decentralized qualification of these incidents rather a much faster troubleshooting by accident management, because for each group "competent body", the spinner
  • the operator, the mechanic, the electronics engineer or the control center can be immediately and immediately informed - without any intervening considerations or decisions of an operator.
  • the time that a spinning station or a spinning section or even the entire machine stand still, so can be significantly reduced, so that the effectiveness of the spinning machine can be significantly improved with the invention and the central control of low-level fault messages is relieved.
  • the invention can also be used for statistical purposes to create a longer-term log of the respective spinning machine, with their classified by groups errors in order to obtain a reliable statement of more common sources of error and to be able to target these sources of error targeted for this user-specific machine. Maintenance time and follow-up costs can therefore be reduced.
  • the assignment section can be supplied with one or more signals from the spinning machine or the spinning station or from a spinning station section from their respective mechanical or electronic parts.
  • monitoring signals for the sensor of the thickness measurement d (t) or speed signals for sliver inlet and / or yarn withdrawal are called whose function or values can be monitored electronically (claim 12).
  • the single figure shows in a partially schematic representation of a rotor 10, from which a yarn 1 at high speed on take-off rolls or rollers 12 is withdrawn.
  • the fiber feed is indicated by FZ, via which fibers of a fiber sliver dissolved by an opening roller are fed.
  • FZ fiber feed
  • this part of the spinning station is of secondary importance, which is why it is not discussed in detail.
  • Also of secondary importance is the geometry of the thread or yarn run, it is shown only schematically in the figure.
  • a measuring device 20 is provided, which may consist of a capacitor through which the withdrawn yarn runs. It is used to measure the current thread thickness d (t) via the thread mass or alternatively via optical detection.
  • a pressure roller 13 can serve for speed detection v (t).
  • the measuring device 20 is electrically connected to an evaluation stage 21, which processes the signals of the thickness measuring device 20 directly on site and possibly amplified. Already here, noise can be filtered out, but it can also be made only a gain of the measurement signal.
  • the evaluation stage 21 feeds a distributor (bus) to which a multiplicity of fault detection modules 22a, 22b, 22c ... 22f arranged at a decentralized location at the spinning station are connected.
  • Each of these recognition blocks - in the following short: 22 - stands for an individual type of fault in the yarn.
  • the fault identification 22a may make an L / T error of the measurement signal Immediately and clearly recognize on the bus.
  • the error detection 22d can detect, for example, an N or an S error, which may mean a short thick spot or only a very short thick spot in the yarn. Too large an irregularity in the yarn, caused by errors in the opening roller, the feed roller or the take-off rollers 12 can detect the CV error detection 22e from the bus signal of the evaluation unit 21.
  • the Nm value is observed by the C monitor 22c; Moire error identifies the device 22b.
  • the parallel operating hardware solution of the figure results in a sequential succession of the software identifiers in the program, but these are all fed with the same measurement signal d (t).
  • the identifiers 22 then correspond to subroutines 22 which each identify an error, for which purpose they are called by a distributor - even in different frequencies, depending on the seriousness of the error or the speed at which the error must be detected.
  • All the individualized incidents - each forming an individual error at the spinning station - are grouped in an allocation unit 23. Illustrated are, for example, four groups A, B, C and D, each corresponding to a decentralized incident hierarchy.
  • the error group A is schematically represented as such an error group which outputs an optical signal.
  • the fault group B is assigned to an electrically transmitted signal. With this signal, for example, a robot unit (walking machine) can be notified to check this spinning position as soon as possible or to initiate a new thread approach.
  • These assignments A ⁇ optical or B ⁇ electric have exemplary character. It is understood that the signaling of the error group A can certainly be done electrically, as well as the electrical signaling of the error group B also optically, e.g. can be routed via fiber optic cable. Accompanying can also be triggered acoustic signals.
  • the allocation unit 23 combines the possible incidents, which are supplied by the individual recognition units 22 and assigns them to certain accident groups A, B, C or D.
  • error sources or incidents are attributed to the mechanics or the electronics of the spinning unit or the spinning device are supplied via the error detection 24, they usually have considerable weight, so that they can be assigned to the shutdown disturbance group D.
  • minor electronics or mechanical errors can be absorbed by redundancy, so that the failure of one of the redundantly present devices does not lead to a shutdown, but only to a signaling of a (still) harmless incident to be rectified soon.
  • the assignment can be achieved via different ways. It is possible to assign specific errors to specific group signals A, B, C or D by jumpers. It is also possible to use a diode matrix (shown schematically in the figure). Another possibility is a program implementation in which a combination of the memory cells is carried out, which stand for a respective error signal. Finally, there is the possibility of using discrete logic in which a plurality of AND gates having at least two inputs are used, one input being assigned to one output of an error identifier 22a, 22b and the other input being assigned to a control signal, whether this is Gate should be activated. The outputs of all AND gates are linked via OR gates so that e.g. the error output A is only linked to a certain number of AND gate outputs which form this fault group.
  • the mappings of the error identifiers 22a to 22e are chosen to define two groups, namely the group A, which enables visual indications and the group B, which transmits an electrical signal to a traveling robot unit (traveling machine).
  • These two error mapping hierarchies can also be viewed as forming two subgroups into a global group of yarn faults (long or short yarn faults, respectively). Then all fault identifiers 22a to 22e are assigned to a fault group - the fault group of the yarn faults - and within this yarn fault fault group, a subgroup results in the two optical and / or electrical fault signals shown.
  • the dashed lines indicate the changeability of the assignment of the fault message signals to the group output signals.
  • a shutdown signal D is shown, with which the spinning station is completely turned off.
  • This output D shutdown of the spinning station
  • This output D can be assigned to the errors that can still be fixed locally, but only by an intervention of a qualified professional.
  • an optical error indication had been mentioned. It can relate to a screen, it can affect LED displays that can be varied in shape and flash frequency, but it can also affect a printer that sends a message about Print a specific incident that was not significant and only needs to be logged. For example, a short garnish error, which has cleaned itself up again.
  • outputs can be provided, such an output C, which blocks the spinning unit by artificially generating a yarn breakage and lock this spinning station for the traveling machine. This may result in a logged message, corresponding maintenance personnel must be notified.
  • Figure 22a identifies the L / T yarn defects that are thick and thin and are a summary of the long errors.
  • the fault identification 22b identifies moire errors that arise when the yarn has a varying thickness at a particular repetition rate.
  • the C yarn monitoring is the stationary thickness monitoring, it is filtered with the error identifier 22 c from the bus signal from the evaluation stage 21.
  • error group A causes an optical signaling, for example, to the spinning machine operator, so that they can eliminate an easily recoverable error itself and in the context of their technical horizons.
  • Such an error may be the cleaning of the rotor, then it can be spun again. Also possible are changing a coil or the template tape. With an appropriate device of the Wanderautomates can also be done on this hierarchy automated troubleshooting.
  • the N / S yarn defects and the CV yarn defects are summarized.
  • the N / S errors are the short mistakes, they include the short and very short thick spots.
  • the error group B is assigned the CV errors indicating the large long-term irregularities in yarn thickness. You can e.g. caused by errors in the opening roller, the feed roller or the take-off roller. Here, a much more skilled personnel is required, because it comes in the replacement or replacement of rollers on high accuracy and here the troubleshooting person or the walking machine, which was caused in the error group A, no longer have sufficient technical knowledge or mechanical options.
  • error group B an assembler can be called in, but it is also possible for the traveling automat to be called in by an electrical signal in order to carry out certain tests, perhaps without a fitter. Failure multiple attempts to re-spin or spin without error, so the error signal is shifted up a group, which is shown schematically with C and leads to blocking (thread breakage and barriers for walking machine) of the spinning unit.
  • an n-time attempt to re-spin after a CV error is recognized by the identifier 22f.
  • the error group D is the one that will completely turn off the spinning unit. Here is a significant, not easy to fix error has occurred, so that the machine manufacturer must be informed. An example of this is a damaged measuring head 20, if no redundant second measuring head is provided. Another example is the failure of length measurement 25.
  • the illustrated error identifiers 22, 24, the messages about occurred incidents submit, not only discrete but may also be included in a signal processor or microcomputer, where certain error detection routines (subroutines ) interrupt-controlled or can run repeatedly in the main program.
  • the interrupt routines then form the error or fault identifiers, because they perform their function, but which function can not be represented graphically.
  • ⁇ s yarn difference length ⁇ s and limit values or tolerance bands which can be set
  • speed v (t) or yarn length s (t) or yarn difference length ⁇ s and limit values or tolerance bands which can be set can be used.
  • a speed measurement can be provided, which is indicated schematically as a slip-free idler roller 13.
  • the timer 26 allows the converter 25 to determine the yarn length ⁇ s from the measurement signal v of the speedometer 13.
  • the number of revolutions of the roller 13 can be counted, with known Roller circumference.
  • the signal ⁇ s can be utilized by means of a program or in the discrete error identifiers 22a, 22b,....
  • a device is proposed for the notification of spinning-point faults and their qualification.
  • a method for detecting and assessing occurred incidents at a yarn spinning station is proposed, after which the aforementioned fault indicator can work.
  • the signal obtained by a measuring device (20) of the Garnes an evaluation stage (21,22) supplied, which emits interference message signals.
  • These are assigned to fault groups (A, B, C, D) given in an assignment section (23) provided directly at the spinning station.
  • the output signals of the allocation section each stand for a group of disturbances which cause stepped accident removal reactions (automatically).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP94116410A 1993-10-18 1994-10-18 Spinnstellenstörmelder und -qualifizierer Expired - Lifetime EP0648872B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335459 1993-10-18
DE4335459A DE4335459C2 (de) 1993-10-18 1993-10-18 Spinnstellenstörmelder und -qualifizierer

Publications (3)

Publication Number Publication Date
EP0648872A1 EP0648872A1 (de) 1995-04-19
EP0648872B1 EP0648872B1 (de) 2001-05-09
EP0648872B2 true EP0648872B2 (de) 2008-07-02

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ID=6500411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116410A Expired - Lifetime EP0648872B2 (de) 1993-10-18 1994-10-18 Spinnstellenstörmelder und -qualifizierer

Country Status (4)

Country Link
US (1) US5799476A (cs)
EP (1) EP0648872B2 (cs)
CZ (1) CZ288653B6 (cs)
DE (2) DE4335459C2 (cs)

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DE102004013776B4 (de) * 2004-03-20 2017-07-27 Rieter Ingolstadt Gmbh Verfahren und Vorrichtung zur Ausreinigung von Garnfehlern
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DE102015111673A1 (de) * 2015-07-17 2017-01-19 Rieter Cz S.R.O. Verfahren zum sicheren Starten und/oder Stoppen eines Rotors einer Rotorspinnmaschine und Rotorspinnmaschine
CZ306820B6 (cs) 2015-11-03 2017-07-26 Rieter Cz S.R.O. Způsob justace pracovního místa a čističe příze nebo snímače kvality příze na textilním stroji vyrábějícím přízi
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EP4101957A1 (en) * 2021-06-11 2022-12-14 Maschinenfabrik Rieter AG Device and method for determining a classification of a current performance of one or more parts of a spinning mill
EP4352289A1 (en) 2021-06-11 2024-04-17 Maschinenfabrik Rieter AG Device and method for determining a classification of a current production output of at least one or more parts of a spinning mill
EP4163242A1 (en) * 2021-10-08 2023-04-12 Maschinenfabrik Rieter AG An electronic device for locating a functional disorder at a spinning and winding section of a spinning mill and a method for locating the same

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Also Published As

Publication number Publication date
EP0648872A1 (de) 1995-04-19
DE59409744D1 (de) 2001-06-13
CZ288653B6 (cs) 2001-08-15
DE4335459A1 (de) 1995-04-20
US5799476A (en) 1998-09-01
DE4335459C2 (de) 1999-12-02
CZ257094A3 (en) 1995-11-15
EP0648872B1 (de) 2001-05-09

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