EP1074645B2 - Sensor system for ring spinning machines - Google Patents

Abstract

The sensor carrier for a ring spinning machine comprises an elongate body (152) which is attachable to the ring frame (150) in such a way that it extends over a longitudinal section of the machine, covers several spinners and can carry a corresponding number of sensors.

Description

The invention relates to a sensor for a ring spinning machine, in particular with a ring frame. The sensor system can be designed or executed for the detection of so-called "dobby spindles" and can be assigned to a corresponding display.

The present invention can be used advantageously in combination with the invention according to EP Patent Application No. 00810364.00 of 28 April 2000. The ring frame may have a transverse to a support member for rings arranged supporting part, which according to the DE-A-1 43 24 587.0 (Obj. No. 2338) serves to receive a rail which carries rings for narrowing the thread ballon. The ring frame can also with openings according to DE-A-195 42 802 (Ref. No. 2526). Such a construction is not essential to the present invention but will be used hereinafter to explain an example of the practical application of a system according to the present invention.

State of the art

An overview of the basically known solutions for the sensors in the ring spinning machine can be taken from the article "Sensors for thread monitor" in Textiltechnik 34 (1984) 3 (page 131).

A particular problem in the ring spinning machine is that of the creep or creep spindle, i. a spindle that operates at an internal speed below the set "machine speed". A thread break leads to a termination of production at the affected spinning station; this means a reduction in the efficiency (efficiency) of the machine as a whole - but has no far-reaching consequences. A creep spindle, on the other hand, still produces a yarn which, however, differs in terms of the coefficient of rotation (in terms of the coefficient of rotation), if at all substantially, from the yarn of the normally operating spindles. Such a yarn can lead to rejects in further processing. It is an operator also not immediately (visually) recognizable that a spinning station comprises a creep and therefore is actually defective. Without a meter and corresponding display, the operator will not be able to determine how high the spindle speed is at a particular spinning station.

It has therefore been proposed to detect and display creep spindle by means of a sensor - see DE-A-4011944 and DE-A-4228300 , However, from these writings is not entirely clear where the ad should be. As already indicated, the mere indication that a creep spindle is "present" will not completely solve the problems of operation. An advertisement at a control center (eg according to DE-A-3940923 or DE-A-3701796 ) can help, but the operation does not lead directly to the affected spindle. A system according to DE-A-3832482 indicates to the operator where an error has occurred, but requires additional effort, in particular an operator and removable marker. Out US-B-4635321 It is known to provide signal lamps in drafting parts. This represents an improvement compared to the provision of a display on the operator (see, eg US-B-4030281 ), however, does not suggest clear guidance of the operation to a creep spindle. Finally, it is also known, a so-called Luntenstopp (for example, according to US-B-4432195 ); but it must ever be provided per spinning station such a device, which in many cases represents an unacceptable expense.

• US-B-2,930,179 ; US-B-2,930,180 und US-B-3,102,378
• FR-A-1,518,050
• DE-A-2,505,399
• EP-A-329 618
• CH-B-556 923
• JP-A-GM 6-83777
• DE-A-40 35 385 .

For the problem of the general design of the sensor in the ring spinning machine, the following solutions are known from the patent literature, based on a contactless scanning of the rotor movement, usually by means of magnetic sensors, or at least show:

• US-B-2,930,179 ; US-B-2,930,180 and US-B-3,102,378
• FR-A-1,518,050
• DE-A-2,505,399
• EP-A-329 618
• CH-B-556 923
• JP-A-GM 6-83777
• DE-A-40 35 385 ,

Other proposed sensors are, for example, vibration sensors ( US 4,254,613 ), optical sensors ( EP-A-480 898 ) and acoustic sensors ( EP-A-442,327 ).

Still other writings are concerned with interrogation systems to determine the states of many individual sensors in a ring spinning machine. examples are JP-B-8-16287 ; DE-A-37 44 208 ; CH-B-684 908 ; EP-B-600 268 and DE-A-40 11 944 ,

However, the large number of sensors also leads to further problems, for example with regard to the wiring and the signal transfer. Individual solutions are eg in DE-A-30 05 746 ; EP-A-389 849 ; DE-A-36 37 969 and DE-A-196 31 302 been shown.

Finally, a few writings deal with the problem of attaching to the ring spinning machine itself, such as JP-A-9-279426 and CH-B-671,040 ,

The invention is defined by the features of claim 1.

According to this invention, each spinning station is assigned a respective display for the state "creep spindle". The assignment is preferably selected such that an operator who is on this display, must also be in the vicinity of the affected spinning station. The ad must indicate unambiguously which spinning position is affected. The display is preferably visually perceptible, for example, a signal lamp. There is one display per spinning station. The display can be assigned to the spinning station in such a way that it can also be perceived from remote positions, eg from the machine end. But then there is the risk of contradictory requirements for the ad. According to the preferred solution, the individual displays assigned to the spinning stations are supplemented by open space displays, which can lead to the operation of relatively far away in a place where the display of an affected spinning station is easily recognizable. It can, for example, be provided on at least one and preferably each machine end a large-scale display per side of the machine Next, for each side of the machine several, distributed over the machine length section displays can be provided. Preferably, a section display per distance is provided, which corresponds to a predetermined number of spinning stations.

For the detection of creep spindles, the invention also provides a single-spindle sensor (i.e., a sensor associated with a single spindle) for a ring spinning machine. The sensor is preferably suitable for outputting a signal which can be evaluated both for indicating a yarn breakage as well as for indicating a "creeping condition" of the spindle associated with the sensor. The sensor can cooperate with an evaluation and a display, wherein the display signals at least the presence of a creep condition. The display is provided near the spindle. For the sensor and the display a common bracket is provided.

The invention (the "previous invention") according to EP Patent Application No. 00810364.00 of April 28, 2000 provides a support for a plurality of sensors to be mounted in a ring spinning machine, characterized in that the support comprises an elongate body having means for securing the body to the ring frame such that the body extends over a longitudinal portion of the machine can, which corresponds to a plurality of spinning stations, wherein the body is arranged for fixing a corresponding number of sensors. The present invention can be combined with the previous invention. However, the longitudinal section of the machine preferably does not correspond to all spinning stations on the corresponding machine side, so that a plurality of carriers must be attached to the ring frame in order to attach a separate sensor to the ring frame for each spinning station per machine side. The lengths of the bodies are preferably all the same and after assembly preferably cover the front of the ring frame from one end to the other. In a case where a machine for the so-called section assembly is prepared (eg according to our DE Patent Application No. 197 55 780.5 dated December 16, 1997), the length of a body corresponds to the section length.

The body is preferably formed as a profile and is for example substantially U-shaped in cross section. This body thus forms a channel for the wiring associated with the sensors. In the ring spinning machine, adjacent bodies may be connected to each other or connected to each other to form a continuous channel in the longitudinal direction of the machine. The body is preferably attached to the front of the ring frame. Where the body is formed as a U-shaped profile, the "bottom" of the profile can be secured to the ring frame so that the two wall portions of the profile face away from the ring frame. The body is designed such that supports for the sensors and for the corresponding displays can be attached to and removed from the body, e.g. by means of an elastic positive fit, such as a snap connection or a bayonet connection.

Fig. 1

einen Querschnitt durch einen Ringrahmen mit den umgebenden Teilen einer Ringspinnmaschine gemäss DE-A-195 42 802 ,

Fig. 2

eine perspektivische Darstellung eines Teils des Ringrahmens,

Fig. 3

einen Querschnitt durch einen Ringrahmen einer Ringspinnmaschine mit einem Träger gemäss der vorhergehenden Erfindung,

Fig. 3A

ein Detail aus Fig. 3,

Fig. 4

eine vereinfachte Ansicht in Richtung des Pfeils P in Fig. 3,

Fig. 5

eine schematische Darstellung einer Seite einer Ringspinnmaschine im Querschnitt,

Fig. 6

schematisch ein Sensoriksystem, das gemäss dem Konzept nach der vorliegenden Erfindung zusammengestellt werden kann.

Fig. 7

eine schematische Darstellung einer Vorrichtung zur Verwendung mit einem Träger nach den Figuren 3 und 4,

Fig. 8

einen schematischen Plan einer Gruppe benachbarter Ringspinnmaschinen zur Erklärung eines Bedienerführungskonzeptes,

Fig. 9

eine schematische Darstellung der Anzeigemittel einer Sektion einer Maschine gemäss der vorliegenden Erfindung,

Fig. 10

eine schematische Darstellung einer alternativen Spinnstellenanzeige nach der Erfindung,

Fig. 11

einen schematischen Querschnitt durch eine Anordnung, die anstelle der Anordnung nach der Figur 3 verwendet werden kann,

Fig. 12

schematisch eine erste Variante eines Moduls gemäss der vorliegenden Erfindung zur Verwendung in einer Anordnung gemäss Fig. 11, und

Fig. 13

eine zweite Variante eines solchen Moduls.

In the following embodiments of the invention will be described with reference to the figures. Show it:

Fig. 1

a cross section through a ring frame with the surrounding parts of a ring spinning machine according DE-A-195 42 802 .

Fig. 2

a perspective view of a part of the ring frame,

Fig. 3

a cross section through a ring frame of a ring spinning machine with a carrier according to the preceding invention,

Fig. 3A

a detail from Fig. 3 .

Fig. 4

a simplified view in the direction of arrow P in Fig. 3 .

Fig. 5

a schematic representation of a side of a ring spinning machine in cross section,

Fig. 6

schematically a sensor system that can be put together according to the concept of the present invention.

Fig. 7

a schematic representation of an apparatus for use with a carrier according to the FIGS. 3 and 4 .

Fig. 8

a schematic plan of a group of adjacent ring spinning machines for explaining an operator guidance concept,

Fig. 9

a schematic representation of Display means of a section of a machine according to the present invention,

Fig. 10

a schematic representation of an alternative spinning position display according to the invention,

Fig. 11

a schematic cross-section through an arrangement which, instead of the arrangement according to FIG. 3 can be used,

Fig. 12

schematically a first variant of a module according to the present invention for use in an arrangement according to Fig. 11 , and

Fig. 13

a second variant of such a module.

For the time being, the construction of the ring frame of a ring spinning machine will be discussed, according to which an embodiment of a carrier according to the invention will be explained. Subsequently, the section assembly of the ring spinning machine and the corresponding preferred design of the carrier and the sensor will be discussed.

The ring frame 110 in Fig. 2 has a horizontal support part 113 (FIG. Fig. 1 ) for a ring 112, further towards the inside of the spinning machine towards a support member 111 to which a rail 120 is fixed, which carries a holder 122 and a ring 124 for concentrating the thread balloon. It is understood that each spindle 116 is associated with its cop 118 in a bore 125 of the ring frame 110 per a ring 112, a holder 122, and another ring 124. A ring 112 is held by a retaining ring 114 on the ring frame 110. To guide air flows 111 breakthroughs 126 are present in the support member and provided strips 128, which emanate from the support member 111 below the support member 113. The openings 126 allow the discharge of the air flowing along the cops according to arrows 140a, 140b. Such breakthroughs are not essential to the present invention. With the help of such air-guiding means in the form of openings 126 and strips 128, however, it is possible to substantially reduce thread breakages and machine transposition.

The ring frame 150 of FIGS. 3 and 4 corresponds largely to the frame 110 of Figures 1 and 2 wherein the brackets 122 and air gaps 126 have been omitted. This ring frame 150 is provided with a carrier comprising a main body 152 in the form of a U-shaped profile. The bottom 154 of the profile is fitted to the front 156 of the ring frame 150, ie in this case the surface 158 of the tread 154 facing the ring frame 150 is flat and the "width" of this surface 158 is substantially equal to the height of the frame front 156 equivalent. Both the front 156 of the ring frame as well as the corresponding surface 158 of the profile floor 154 could, for example, curved or formed with edges, the two cross sections can then be adapted to each other.

The carrier body 152 is provided with a lip 160, which is supported on the upwardly directed surface 162 of the ring frame 150 during assembly and thereby positions the profile body in height. The bottom 154 of the body 152 is provided with a groove 164 for receiving fasteners (not shown). These fasteners also extend through a bore 166 in the front side 156, thus securing the support body 152 to the ring frame 150. The positioning of the body 152 in the longitudinal direction will be discussed in more detail below.

The bottom 154 of the opposite side of the profile body 152 is open in and of itself, but is closed by a cover 168 after assembly. The cover 168 can be connected to the profile body 152 by means of a snap connection (indicated schematically by the reference numeral 170). The cover 168 also serves to support certain electronic parts, as described in more detail below. These parts are thus made easily accessible when removing the cover for maintenance.

The upwardly directed wall 172 of the profile body 152 has openings 174 which serve to receive fastening means 176 which fasten the sensor holders 178 to the body 152. The brackets 178 are preferably individually removable and the connection of each bracket to the bracket should be correspondingly easily releasable. A suitable connection can be realized by a bayonet-type screw cap, to which the openings 174 quadrangular (see. Fig. 4 ) can be formed. The details of the fastening means 176 are not shown in the figures, since the skilled person various options are available.

The profile body 152 may e.g. plastic or a metal (preferably a light metal such as aluminum) by continuous casting. The extruded profile can then be tailored to predetermined lengths to form individual bodies. The lengths of the individual bodies will be discussed in more detail below. The cover can be formed by a similar process, wherein it can be made of the same or of a different material. The preferred material combination comprises a profile body made of aluminum in combination with a cover made of plastic.

In the spinning machine, the apertures 174 should be arranged such that the sensor (not shown) held by a fixture 178 is centered (positioned) opposite a ring 180, as particularly shown in FIG Fig. 4 it should be made clear that, for the sake of simplicity, in Fig. 4 only the inner edge 182 of the ring 180 and the outer edge of the Ring holders 184 have been specifically shown. The perforations 174 must be pierced therein after the continuous casting of the body 152, wherein adjacent openings 174 have a predetermined distance, which corresponds to the normalized in spinning machine construction division of the spinning stations (ring axes). It is then necessary when mounting the profile body to ensure the exact positioning of the entire body 152 in the longitudinal direction of the ring frame, without having to pay attention to the individual brackets 178. This positioning can be facilitated by a rational design of the fastening means between the profile body 152 and the ring frame 150. The fastener, not shown, may include, for example, clamping screws that hold the body 152 to the ring frame 150 without preventing it from slipping against longitudinal displacement of the groove 164 (ie, in the longitudinal direction of the ring frame 150). Only when the body 152 is in the correct position in the longitudinal direction, the clamping screws are screwed.

The elements 186 in Fig. 4 represent schematically fasteners, whereby the ring holder is attached to the ring frame 150, while the element 188 is a so-called runner cleaner, as he eg in DE-A-197 53 767 has been shown. The runner himself is in the FIG. 4 indicated by the reference numeral 190. The in Fig. 3 Ring 180 shown as a so-called "Schrägflanschring" (eg EP-B-528 056 ) educated. However, the invention can be used with other types of rings.

The bracket 178 is designed to receive a magnetic sensor that responds to the revolutions of the rotor 190 on the ring 180 during spinning. However, since the design and operation of such sensors are well known to those skilled in the art (e.g., from the literature cited in the introduction), details of the sensor are not discussed here. The invention is not limited to a particular type of sensor anyway, although it is obviously advantageous to choose a non-contact sensor. For this version, it is important to note that the sensor must move with the ring frame, which is hereby ensured by the fact that the sensor is attached to the ring frame.

It may be important to change the position of a bracket 178 (or the sensor it carries) radially with respect to the ring 180, for example, if a ring 180 of a certain diameter is replaced by a ring of a different diameter because of the ring Distance of the sensor from the rotor in many cases (especially in the application of certain magnetic sensors) is essential for the function. An appropriate solution is in the Fig. 3A (on a larger scale) shown schematically. The inside of the wall 172 is provided with a plurality of (here, three), longitudinally extending grooves 200. These grooves can be formed in continuous casting at exactly predetermined locations opposite the contact surface 158. A clamping piece 202 of the mounting means for the holder 178 is provided with ribs 204 which can engage in one or the other of the grooves 202 to form a snap connection. The distance of the sensor, not shown, from the central axis of the ring 180 therefore depends on which groove 200 is selected. For a selection (as in Fig. 3A shown), the bracket attachment may come into contact with one end of the aperture 174, in another selection with the other end of the aperture 174, and in the third selection, the attachment may be free between the ends of the aperture. The clamping piece 202 should have the required elasticity to ensure a firm connection between the holder 174 and the body 152, without affecting the solubility of this connection.

It will now be based on the FIG. 5 the so-called section assembly explained, what information from our DE Patent Application No. 197 55 780.5 of 16 December 1997 are listed here.

Usually long spinning machines are divided into sections ("sections"), so that the assembly can be done at least partially in the factory and on the other hand when assembling in the spinning units can be assembled without too much effort in the final assembly. Such a concept is for example from the German Patent DE 882 967 known. The spinning machine is essentially in longitudinal parts, which are arranged in alignment, divided, wherein the longitudinal parts are interconnected with cross members or shields. A section should be essentially "self-supporting", ie it should be mountable without assistance from adjacent sections. The general principle is the FIG. 5 refer to. Accordingly, a section of a ring spinning machine comprises between two plates 12 (in FIG Fig. 5 only one sign 12 is visible) in the lower part of a Doffersupport 34 with a Dofferlager 32, wherein a protective rail 30 is attached to the outside Doffersupport. At the lower part of the shield there is a cable duct 30a and a spindle frame part 26, which are attached laterally to the shield 12.

In the final assembled state sitting on the spindle frame part 26 in alignment a number of spindles 40 (this number will be discussed in more detail below). Furthermore, the holder 12 are laterally attached to the shield 12 for guide rods 20 which vertically movable a ring frame part 24 and a yarn guide frame part 28 lead. The longitudinal parts ring frame 24, thread guide frame 28 are connected by means of cross members 20 b, 20 a with the guide rod 20.

From the double-sided machine is in the Fig. 5 only the left side of the median plane M lying side shown schematically. In the upper part of the cross member or shield 12 sits a cylinder bank 14, which is also designed as a longitudinal part, which is another longitudinal part, carries the suction channel 32. Furthermore, cylinder supports 16 are supported on the cylinder bank 14, which carry the drafting system 18. In the drafting system are as further longitudinal parts 18a the drafting cylinder, by means of which the delay of the dashed yarn is achieved. At the top of the cylinder support 16 sits a support 40a for parts of the gate in which the material to be spun is mounted.

A long spinning machine may include a thousand or more spinning stations each having a spindle 40 and a ring-traveler combination 24a, 24b and a drafting workstation. The described parts together form a more or less complete (double-sided) section of such a long spinning machine 10, this section or section comprising a predetermined number of spindles or spinning stations ("normalized" by the manufacturer). A suitable number of spinning stations per section is e.g. eighty-four, i. four-and-twenty per side of a double-sided section. However, the invention is by no means limited to this number, which may vary from one manufacturer to another.

In a final assembled spinning machine are therefore numerous (eg fifty or more) machine sections 11 in a row in a row between a so-called end head and a foot unit (for the overall arrangement, see eg Fig. 1 in DE-A-39 35 901 The actual number of sections in a given machine depends on the requirements of the ordering spinning mill, the maximum number of sections being limited by the problems arising from the transmission of the drive forces or suction air etc. from the end head or foot unit. The concept of the support structure of a section sees at least two mutually connected with longitudinal parts 30,30 ', 26 etc. cross members 12, so stands or shields, with additional parts of the same or another machine section 11 as the ring frame 24' with separators 25 and / or rails 42 in the shown and described machine section provisionally, so for transport, are housed. In the spinning mill, the partially assembled sections are then assembled together with the individual parts to make a machine of the ordered size (spindle number, derived therefrom, number of sections).

• einerseits ein Ringrahmen 150 (Fig. 3) gemäss dem Konzept der Sektionsmontage aus einer Vielzahl von länglichen Teilstücken zusammengestellt wird, wobei die Länge des Teilstückes der Länge einer Sektion im wesentlichen gleich ist, und
• andererseits die Länge des Profilkörpers 152 (Fig. 3) vorzugsweise der Länge der Sektion angepasst wird, sodass jeder Profilkörper 152 einem jeweiligen Ringrahmenteilstück zugeordnet werden kann.

It will be apparent from these explanations without additional representations two findings, namely that

• on the one hand a ring frame 150 ( Fig. 3 ) is assembled according to the concept of section assembly of a plurality of elongated sections, wherein the length of the portion of the length of a section is substantially equal, and
• on the other hand, the length of the profile body 152 (FIG. Fig. 3 ) is preferably adapted to the length of the section, so that each profile body 152 can be assigned to a respective ring frame section.

It follows that the number of brackets 178 per profile body 152 should be equal to the number of rings 180 of the corresponding ring frame section, this number depends on the assembly concept of the manufacturer. It will also be understood, however, that the arrangement is not limited to the equality of the profile body length and the section length of a particular machine. It would be possible e.g. to use two or more profile bodies per side of a machine section. However, it would also be possible to deliver each profile body in a standardized length, which is adapted to any specific machine section concept, in which case each body must be cut if necessary, to adapt it to the application found.

It will now be based on the FIG. 6 on the overall concept of the machine sensors received before the recourse to the aforementioned electronics in each section. It is assumed that each section is provided with its own microcomputer, which manages the output signals of the sensors assigned to this section. Each section computer is in communication with a central unit, whereby the connections to this central unit may differ depending on the overall concept.

Fig. 6 Fig. 12 therefore schematically shows fifty section units S1 ------ S50 connected to an adapter A by means of a BUS, and further details of a single unit S25 serving as an example of the others, because all the units S1 to S50 are the same. The unit S25 comprises a computer chip (Printed Circuit Board) PCB and individual lines L1 to L24 between input / output points on this chip and individual connection elements V1 to V24. The connecting elements V1 to V24 are designed in such a way and opposite to respective openings 174 (FIG. Fig. 3 ) that upon insertion of a holder 178 in its receiving opening 174, the signal inputs and outputs of the sensor carried by this holder are automatically (without further action) via the respective line Lx connected to the chip PCB. The chip PCB is also provided with main signal input and output means HS for connection to the bus. The BUS can be realized for example as a so-called Ethernet bus, the invention is not limited to this type of bus. Finally, each computer PCB is connected to a signal lamp SL associated with it. The purpose of this lamp will be explained in more detail below.

The adapter A does not have to be provided with its own computer. It serves to connect the BUS with other control units, in particular with the machine control or its energy supply M and a central unit ZE for evaluating the information supplied by the sensors. The Central unit ZE can in turn be connected to a data acquisition or process control system SW, eg with a system supplied by the applicant company under the name "SPIDERWEB". However, this connection will not be discussed in more detail here because the invention has nothing directly to do with it. However, all connections are preferably designed for bilateral communication.

• die an der Spinnmaschine anzubringende Sensorik nicht direkt an die Verdrahtung der Maschine angeknüpft werden kann bzw. dass die Zentraleinheit ZE nicht direkt in die Maschinensteuerung integriert werden kann, und
• die Sensorik muss nicht mit einer Luntenstopp-Funktion (z.B. gemäss DE-A-35 26 305 ) verbunden werden. Die Erfindung ist aber nicht zur Verwendung innerhalb dieser Rahmenbedingungen eingeschränkt, d.h. sie kann z.B als Alternative im Rahmen eines Systems gemäss EP-B-389 849 realisiert werden.

The in the Fig. 6 The arrangement shown assumes two "basic conditions", namely that

• the sensor system to be attached to the spinning machine can not be connected directly to the wiring of the machine or that the central unit ZE can not be integrated directly into the machine control, and
• The sensor does not have to be equipped with a Luntenstopp function (eg according to DE-A-35 26 305 ) get connected. However, the invention is not restricted for use within these framework conditions, ie it can, for example, as an alternative in the context of a system according to EP-B-389 849 will be realized.

It is also not necessary to provide one central unit per machine, that is, the adapters A of several spinning machines could be connected to a common central unit ZE. For the sake of simplicity, however, it is assumed for the further description that each machine has its own central unit ZE ( Fig. 6 ) and that this center must only handle tasks related to the thread breakage sensor (no machine control functions). The center ZE has in any case no direct connection with the individual, carried by the brackets 178 sensors, but only by means of the BUS with the section computer PCB. Each computer PCB is therefore designed to query its assigned sensors according to their respective states (multiplexor function) and forward the corresponding information on command of the center to this. The nature of the information to be transmitted will be discussed in more detail below, after again using the FIGS. 3 and 4 the arrangement of the electronic parts in each section has been explained.

The chip PCB of each section is housed in the cover 168 of the profile body 152 associated with this section. The line Lx (see Fig. 6 , in Fig. 3 not shown) for a sensor extends from the chip PCB toward the aperture 174, thus securing the sensor mount 178 to the body 152. The line can be provided with a quick connection (not shown), whereby it can easily be connected to a corresponding signal transmission line connected to the sensor. The main entrances and exits (HS, Fig. 6 ) can be connected to the inputs and outputs of the adjacent chips when mounting the carrier. The profile body 152 with its covers 168 thus form a cable or: wiring channel, whereby the electronic parts and their connection lines are protected.

1. a) Faden wird (nicht) aufgewickelt, und
2. b) die Spindeldrehzahl.

In principle, it is possible to obtain, by means of the sensors known today, which respond to the runner, two information relating to a spinning station, namely

1. a) Thread is (not) wound, and
2. b) the spindle speed.

In the case a), the chip PCB determines from the output signal from the sensor whether the rotor periodically passes the sensor (thread is wound up) or not (thread is not wound up). In case b), the chip PCB must additionally be able to determine the number of rotor revolutions per given time unit. The chip is also preferably able to detect faulty sensors.

1. 1) Fadenbruch festgestellt
2. 2) Spindeldrehzahl ausserhalb Toleranzen
3. 3) Sensor defekt.

The chip PCB collects and accordingly evaluates locally the output signals of the sensors assigned to it. If no defects are detected, no "event telegrams" must be sent to the central unit ZE. However, the following malpositions must be forwarded by means of such a telegram:

1. 1) thread break detected
2. 2) Spindle speed outside tolerances
3. 3) Sensor defective.

At the same time the signal lamp SL ( Fig. 6 ) to indicate the operation in which section the error has occurred. It would be advantageous to provide the error messages with a spindle identification (eg number) and possibly with a "time stamp". But also based on messages per section (without timestamp), the central unit ZE or the data acquisition SW is able to evaluate the operating behavior of the machine and display, so that the operation can intervene. If no time stamp can be sent, an event is preferably reported "immediately" by means of a "telegram" to the central office, where the time of the message can be detected.

However, it may be of special interest to obtain information from particular time periods, eg the number of thread breaks when restarting after a doffing process ("start-up thread breakages) .To enable this, and also to avoid misinterpretations during standstill, during run-up and during spin-off, The chips PCB must be informed of the current state of the machine from the center ZE, or receive commands that initiate and / or suppress certain evaluations in the chips.

The different functions can thus be summarized as follows:

• erhält bei der Initialisierung von der Zentrale ZE die Parameter
  • Minimaldrehzahl (Faden läuft)
  • der Zeitintervall, der für die Ermittlung von sogenannten "Schleicherspindel" zu verwenden ist.
• berechnet aus den Signalen für die korrekt laufenden Spindeln eine mittlere Sektionsdrehzahl
• ermittelt einen Sammelzustand über ihre zugeordneten Spindeln für
  • Fadenbruch (brüche) vorhanden
  • Schleicherspindel(n) vorhanden
  • Sensoren defekt.
• erhält periodisch von der Zentrale ZE eine Drehzahl für die Ermittlung der Schleicherspindeln. Spindeln, die länger als das definierte Schleicher-Zeitintervall langsamer als die vorgegebene Drehzahl laufen, werden als Schleicherspindel erfasst.
• ermittelt im Betrieb zyklisch den Spinnstellenzustand und steuert bei Bedarf die Signallampe SL beim Aussenden eines Ereignistelegramms an die Zentrale ZE.
• ermittelt während der Anlauf- und/oder der Doffphase die Anzahl Fadenbrüche. In dieser Phase müssen die Fadenbrücheinformationen in der Sektion gespeichert werden und beim Anfragen von der Zentrale aus (nach der Beendigung der speziellen Phase) als Sondermeldung gesendet werden. Während einer solchen Phase wird die Spindeldrehzahl normalerweise nicht ermittelt, da sie sich stetig ändert. Der Beginn bzw. das Ende einer solchen Phase wird von der Zentrale gemeldet.

The section:

• receives the parameters from the central unit ZE during initialization
  • Minimum speed (thread running)
  • the time interval to be used for the detection of so-called "creeping spindle".
• calculates a mean section speed from the signals for the correctly running spindles
• determines a collection state via its assigned spindles for
  • Thread breakage (breaks) available
  • Schleich spindle (s) available
  • Sensors defective.
• receives periodically from the central ZE a speed for the determination of the Schleichspindeln. Spindles that run slower than the specified speed for longer than the defined Schleicher time interval are detected as a creeping spindle.
• determined during operation cyclically the Spinnstellenenzustand and controls if necessary the signal lamp SL when sending an event telegram to the center ZE.
• determines the number of thread breaks during the start-up and / or the doffing phase. In this phase, the thread break information must be stored in the section and sent as a special message when inquiring from the control panel (after completing the special phase). During such a phase, the spindle speed is normally not determined because it is constantly changing. The beginning or the end of such a phase is reported by the central office.

• leitet die Signale von den Sektionen weiter
• leitet ein Signal weiter, das angibt, ob die Maschine läuft oder nicht
• gibt ein Doffsignal weiter.

The adapter

• forwards the signals from the sections
• Forwards a signal indicating whether the machine is running or not
• returns a doff signal.

• fasst Spindeldaten zusammen (beispielsweise pro Schicht)
• ermittelt periodisch aus den Sektionsdrehzahlen die Grenzdrehzahl für die Ermittlung der Schleicherspindeln und leitet diese an die Sektionen weiter.

The central office (if not already mentioned)

• summarizes spindle data (for example, per shift)
• periodically determines from the section speeds the limit speed for the determination of the dormer spindles and forwards them to the sections.

The Fig. 7 now shows an example of a development according to the present invention. The bracket 178 has a header 300 which receives the sensor device 302. The sensor device 302 is connected via a line 304 to the PCB. The device 302 includes, for example, a means for generating a magnetic field and a Hall-effect sensor (not specifically indicated) which responds to the "disturbances" in the field caused by the rotor. However, the holder 178 also carries a light source (eg, a light diode 306), which is also connected to the PCB by means of a lead 308. The function of this light source 306 will be explained below.

In the execution according to the FIGS. 1 to 6 The cover 168 also serves to carry certain electronic parts (in particular a "computer board" PCB). This is possible in principle, but is not the preferred solution. In the embodiment of the FIG. 7 For example, the electronic components PCB are preferably mounted independently of the cover 168 and behind it in the channel, whereby they are easy to install and remove by means of suitable releasable fastening means. These parts are thus made easily accessible when removing the cover for maintenance. The PCB is connected to an evaluation center, as already explained in the preceding description and will not be repeated here.

If the spindle speed is outside the tolerances, the PCB can directly turn on the power supply to light source 306 so that this error is displayed immediately and at the affected location. The error is also reported to the control center, so that it appears there for display. The operator is thus informed as quickly as possible and able to prevent the forwarding of faulty cops. Fast intervention is very important in this case because the subsequent costs in further processing are considerable. At the same time, a signal lamp associated with the machine section may be illuminated to indicate to the operator in which section of the long spinning machine the error has occurred.

It would be advantageous to send the error messages to the control center with a spindle identification (eg number) and possibly to provide it with a "time stamp". But also based on messages per section (without timestamp), the central unit is able to evaluate the operating behavior of the machine and display, so that the operator can intervene. If no time stamp can be sent, an event is preferably reported "immediately" by means of a "telegram" to the central office, where the time of the message can be detected.

The FIG. 8 shows schematically in plan three ring spinning machines 310, 312 and 314 side by side, wherein the machine longitudinal axes Ax are arranged parallel to each other. Each machine has a longitudinal side LA and one of the longitudinal side LA mirror image arranged longitudinal side LB. Each machine comprises at one end an end head K and at the other end a foot unit F. The end heads K are at a main course (aisle 1) and the foot units F are also at a main aisle (aisle 2). The main aisles are connected to each other by service aisles BG1 and BG2 which extend between adjacent machines. The middle parts of the machines, viewed in the longitudinal direction, have been omitted because the respective end parts are sufficient for explaining the user guidance concept. According to the in connection with the FIG. 6 explained design concept, has each longitudinal side LA and LB spinning station sections S1, S2, S3 ... etc, wherein in the FIG. 8 only the sections S1, S2, S24 and S25 on the longitudinal side LB of the machine 314 are shown specifically. Each section includes brackets according to Fig. 7 however, since these lamps are rather small and the machine sides are very long, it can not be assumed that the effect of a lamp 306 alone will be sufficient to "call" an operator from a main course to the affected spinning station. In order to improve the operator guidance in this regard, each end head and each foot unit is provided with a lamp LLA associated with the longitudinal side LA and a lamp LLB associated with the longitudinal side LB.

If now a spinning station of a particular machine side (for example, the side LB of the machine 314) is defective, one (or both) of the signal lamps of this page lights up; in the illustrated example, it is the lighting of a single lamp LLB on the foot unit F of the machine 314, which is indicated by shading this lamp. A person in the main course 1 or 2 is therefore guided to the foot unit F of the machine 314. If the lamp LLB on the foot unit F in the main aisle 1 is not well perceived, the lamp LLB on the end head K of the machine 314 can also be lit up. If it is assumed that the defective spinning station is in the vicinity of the foot unit F and only the lamp LLB of this unit lights up, it is possible that the operator can now perceive the illuminated indicator lamp 306 from the foot unit F and directly start the affected spinning station , However, if the two lamps LLB of the machine 314 are lit (ie the "correct" machine end is not specified), or if the faulty spinning station is in the center of the machine, the direct start is much less likely. Under these circumstances, it is advantageous to have additional signal lamps distributed over the machine side, which indicate in which longitudinal section of the machine the affected spinning station lies. It then makes sense to provide such a signal lamp SL per section, as shown both in the FIG. 6 as well as in the FIG. 8 is shown, wherein the signal lamp SL of the section 24 in FIG. 8 "lights up" (shading), while the other signal lamps do not light up (no shading). The operator is therefore informed by means of the "Grossraumanzeigen" LLA, LLB, and the section displays SL of the machine 314 that the defective spinning station in the section 24 of the longitudinal side LB of the machine 314 is located. Having arrived at this section 24, the operator should have no further problems perceiving the lit lamp 306 in the section 24.

A driver concept for this operator guidance is shown schematically in FIG FIG. 9 shown where a section computer PCB24 (see. FIG. 6 ) and the end portions of both neighboring computers PCB23 and PCB25 are shown schematically, each with the associated signal lamp SL. Also schematically indicated for the computer PCB24 are sensors 302 and indicator lamps 306, each sensor 302 being paired with a respective indicator lamp 306 above the computer PCB24, indicated by dashed lines. The evaluation of the signals from the sensors 302 takes place in the corresponding computer PCB and the illumination of the indicator lamp 306 of a defective spinning station and the signal lamp SL of the corresponding section is initiated directly by the computer PCB. However, it does not make sense to connect each computer PCB directly to the lamps LLA, LLB (cf. Fig. 8 ), because this would lead to a very high wiring complexity. The illumination of the machine side lamps therefore takes place from the machine center ZE (cf. Fig. 6 ) out.

The FIG. 10 shows that it is not absolutely necessary to provide one indicator lamp per spinning station. Instead, one could provide one common lamp per pair of spinning stations, the light being intended to shine through one or the other aperture of an aperture pair, with one (eg, arrow-shaped) aperture 316 facing one spinning station 320 and the other opening 318 facing the other spinning station 322. It would also be possible to provide only a single lamp per section, but to guide the light by means of a suitable light guide to a suitable display near the affected spinning station, if a defect is detected.

The FIG. 11 shows a further development of the embodiment according to FIG. 3 , where possible, the same Bezugsziffem used for the same parts were, in particular for the ring frame 150 (including its front side 156), ring 180, rotor 190 and ring holder 184. The profile body 152 of FIG. 3 but is in the FIG. 11 has been replaced by a base part 330. The base portion 330 has a bottom 332 secured to the ring frame front 156 by suitable means (not shown). The base member carries two forwardly projecting walls 334, 336, each wall being provided with an internal bead 338 at the end remote from the ring frame. The walls 334, 336 could in principle be formed with the ring frame 150 in one piece. The beads 338 are adapted to form a positive fit, releasable connection with fasteners 340, 342 of a mount 344 for the runner sensor 346 and / or the spin point condition indicator 348. The walls 334, 366 may be relatively rigid relative to the members 340, 343, or both the walls 334, 336 as well the elements 340, 422 may be elastically deformable to facilitate a releasable snap connection. The holder 344 may be made of plastic, preferably in one piece. It comprises in addition to the connecting elements 340, 342 a hollow projection 350, which in the FIG. 11 is partially cut away to show the sensor 346 held therein, and a bezel 352 for the display 348, which may be in the form of a signal lamp.

The Verbindundselemente 340, 342 also serve as fasteners for a signal evaluation unit SA, which is connected by means of conductors 354,356 with the display 348 and 346 with the sensor. It will therefore be understood that the bracket 344 also forms a partial cover for the channel within the socket 330, wherein the position of the bracket 344 in the machine longitudinal direction is not (pre) determined, but adjusted by sliding the bracket in the longitudinal direction of the base 330 can be. This variant therefore requires a clean mounting of the holder 344 on the ring frame to ensure that the sensors 346 each face a ring 180 or rotor 190. However, if the touchpad of each sensor has been properly selected, the output of each sensor will not be sensitive to minor shifts in the machine's longitudinal direction. The bracket 344 with the parts carried by it now forms a signal generation, evaluation, and display module that sends signals to the section computer (in FIG Fig. 11 not shown).

The holder 344 according FIG. 11 is provided for a single sensor 346. The FIG. 12 shows a module 356 comprising two protrusions 350. The two projections 350 each receive a sensor, so that the sensors are each assigned to a spindle (not shown) after assembly in the machine. This variant also includes two enclosures 352 for each one signal lamp 348, wherein the signal lamps 348 are also each associated with a spindle. The module 356 may be provided with a common signal evaluation unit (not shown) for the two sensors. In such a variant, the connecting elements 340, 422 (in FIG FIG. 12 not visible, cf. Fig. 11 ) not necessarily over the entire length of the module 356 (viewed in the machine longitudinal direction). Both element 340 and element 342 may be formed from a plurality of elastically deformable "claws", with at least two claws at the top (element 340) and two claws at the bottom (element 342). The distance Ab between the axes of the projections 350 may correspond to the spindle pitch, or be adapted only to the spindle pitch. It is known, for example, ring spinning machines generally of the same type either with a spindle pitch of 75 mm. or a spindle pitch of 70 mm. deliver. If the sensor type is selected correctly (with a wide touchpad), for example, by means of a distance Ab of 72.5 mm. Both types of machines are covered by a common module 356. But then it is necessary at most to use spacers between adjacent modules to complete coverage of the channel in the base 344 at a spindle pitch of 75 mm. to ensure.

The FIG. 13 Finally, at a different scale, a module 360 with four protrusions 350 is shown. This quad module can be used in combination with the dual module after the FIG. 12 be used, for example, such that for a "section" with 24 spindle per machine long side, ten double modules 356 and a quad module 360 are used on both sides. The quad module includes not only the signal evaluations (not shown) for the own sensors, but also the section computer (not shown) and the section display (signal lamp) SL. Since the details of the quad module 360 emerge from the description of the dual module 356, a more detailed description or representation of the quad module is dispensed with.

Claims (4)

1. Ring-spinning machine having a respective sensor (302; 346) for each spinning station, it being possible for a signal to be generated by the sensor (302; 346), which signal can be evaluated both to indicate a thread break and to indicate a "crawling state" of that spindle (116, Fig. 1) of the spinning station which is assigned to the sensor (302; 346), and having an evaluation means (PCB; SA) for evaluating the signal both for the presence of a thread break and for a crawling state of the spindle (116), the evaluation means (PCB; SA) interacting with display means, via which the presence of a crawling state can be displayed, and the display means comprising displays (306; 316, 318; 348) which are provided in each case in the vicinity of a spindle (116) which is assigned to the respective display, characterized in that the sensor (302; 346) is designed to react to the movements of the traveller (190) of the respective spinning station and the ring-spinning machine comprises, per machine side, in each case one or more carriers (152) in the form of elongate elements which are fastened to the ring frame, extend over a longitudinal section of the ring-spinning machine over a plurality of spinning stations, and to which in each case a plurality of sensors (302; 346) are fastened, and the display means comprise displays (306; 316, 318; 348), each spinning station being assigned a display (306; 316, 318; 348) for displaying the state "crawling spindle" in such a way that the display (306; 316, 318; 348) indicates unambiguously which spinning station is affected by a crawling state, and the sensors (302; 346) and displays (306; 316, 318; 348) being attached to the carrier (152) by means of holding devices (178, 344) such that they can be removed again, and a common holding device (178, 344) being provided for the sensor (302; 346) of a spinning station and for the display (306) which is assigned to the said sensor (302; 346).
2. Ring-spinning machine according to Claim 1, characterized in that the illumination of the display (306; 316, 318; 348) of a spinning station which is affected by the crawling state can be caused by the evaluation means (PCB; SA).
3. Ring-spinning machine according to Claim 2, characterized in that the display (306; 316, 318; 348) comprises a lamp, for example a light emitting diode.
4. Ring-spinning machine according to one of the preceding claims, characterized in that the sensor (302; 346) generates a magnetic field.

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