EP0534898A1 - Service carriage for a textile machine - Google Patents

Abstract

A textile machine (M) is operated with a travelling unit (W) which has individual sections or individual units (W1, W2) having a plurality of service stations (a,b,y). Individual units can be designed, for example, for the traveller change or be designed as service stations (a,b,c) for different sequential work cycles on the spinning machine. The traveller change is carried out in segments respectively before or after the doffing, that is to say the transporting away of finished spinning cops. Since the spinning machine runs at a reduced speed after the piecing of new spinning cops, the exchanged travellers are at the same time run in carefully. Loss of production caused by a machine stoppage or a reduced spinning speed is thereby minimised. <IMAGE>

Description

The present invention relates to operating methods for an automatic walking machine, which comprises at least one individual automatic machine, for a textile machine, in particular a spinning or twisting machine, which is equipped with a number of similar production sites, furthermore an automatic walking machine for operating the machine.

Automatic devices are increasingly being used for operations at the production sites, which automatically move along the production machine and stop at the production site in question as required. These devices are referred to below as automatic walking machines.

The automatic walking machines known today are active at a single production site. Once the work to be done at the production site has been completed, the automatic walker controls another production site on request or during a control trip.

If several events coincide in time on a textile machine, which necessitate actions of the automatic walking machine, the capacity of the automatic walking machine is quickly exhausted with the operation of only one single production point. As a result, the efficiency of the textile machine drops because the waiting times of shutdown production sites increase.

When using an automatic walking machine at a production site, waiting times often arise during which the automatic walking machine waits for an operation in the Production site itself is waiting. These waiting times are at the expense of the capacity of the walking machine and in turn impair the usefulness of the textile machine in those critical periods in which a large number of actions are required.

An operating procedure for the maintenance of textile machines as well as an automatic walking machine to carry out the procedure according to the CH registration 03 679 / 90-8 is able to carry out a large number of operating operations at neighboring production sites in a short time.

The automatic walking machine works with several spatially staggered operating stations simultaneously at several production points of the textile machine.

The functions of the operator stations can be redundant, so that several operator stations can perform identical functions. Furthermore, the functions of the individual operating stations can be in a sequential relationship. This means that the operation of one or more production locations of the textile machine takes place in several partial actions corresponding to several partial functions of the operating station, the partial functions being available in succession or simultaneously in individual operating stations. In principle, a mixture of the concepts mentioned is also conceivable, that is to say the arrangement of redundant operator stations and operator stations that work with different subfunctions. Such an automatic walking machine can use its advantages if several textile machine production sites in the immediate vicinity require actions at the same time. If the textile machine has a large work capacity for various tasks of the Automatic walking machines are expected, the use of such walking machines makes sense.

In the case of a ring spinning machine, it is checked with at least one operating station whether the spinning process runs smoothly at all or part of the spinning positions. If a thread break is detected, the connection from the sliver to be fed to the finished spun thread can be made on the spinning cop with an auxiliary thread, for example. Another individual machine can, for example, be responsible for changing the rotor on the ring spinning machine.

It is an object of the present invention to provide an operating method for the maintenance of textile machines in which individual machines are only used if the conditions required for using a single machine are present.

The object is achieved in that an arbitrary individual machine is only used when the spinning machine has just been switched off or when the spinning machine has been restarted there are operating conditions which must necessarily be fulfilled for a certain time after the individual machine has been used. For example, the rotor change should only take place over a predetermined number of spinning positions if the spinning machine is operated after the rotor change not only with consideration of the change, but also for other reasons at a reduced working speed.

In particular, the rotor change is carried out during a machine standstill before or after the doffing process or after restarting, and after the doffing process is reduced at the same time as the piecing Speed run a runner run-in program that runs just like the piecing process at a reduced working speed of the spinning machine.

A single machine is provided for the rotor change, which is operated separately from another single machine or coupled with this. A second individual machine can primarily be provided for drawing in the spun material from the roving bobbin to the spindle. It is also conceivable to operate a single automatic walking machine which, on the one hand, is designed for attaching threads to the spinning station or drawing in spun material toward the spinning station and at the same time performs the function of changing the rotor. A particularly advantageous arrangement results when a single machine carries out the change of rotor and then one or the other individual machine then takes over the thread application, since a thread break occurs at each spinning station when the rotor is changed on the running machine.

The single machine for threading can start its work while the spinning machine is at a standstill immediately after changing the runners. The prerequisite for this is that the thread that is to be drawn in from the spinning point up to the drafting device can be securely connected to the roving, even if the drafting device rollers are not yet driven when the thread is attached. This is possible if the top roller is lifted a little from the bottom roller so that the thread can be guided laterally into the gap between the top roller and bottom roller. A device for fixing the top roller is described, for example, in the patent publication DE 39331657 (2008). With the start of the spinning machine you can wait until all spinning positions at which the runner has been replaced, is operational again, that is, a thread is attached that connects the roving sliver to the spinning position. On the other hand, the spinning machine can also be started before the individual machine for threading has finished its work. The individual machine for thread attachment is designed so that it can attach a thread even during spinning operation. Such a machine is described in several patent applications: EP 377888 (2151), DE 4106290 (2205), CH 1057/89 (2153).

Advantageously, the rotor change is only carried out in a certain area, ie over a number of adjacent spinning positions. At a later point in time, further spinning positions are then recorded. In the control of the spinning machine, a program memory can be provided which requests the exchange of runners, for example over 2 sections, so that all runners in a spinning machine are only renewed after several successive exchange actions or doffing processes . If, for example, a spinning machine has 1000 spindles and 50 new runners are used during a single rotor change process, then all the runners of a spinning machine are replaced after 20 working sessions of the corresponding individual machine. This then corresponds to 20 doffing operations or a production time of the spinning machine during which 20,000 cops are being produced. The command to use the individual machines for exchanging the runners can be issued by the spinning machine at the individual machines in question in its park position via a suitable data transmission point. In this case, the automatic rotor change machine must have a control system that enables it to move to any given spinning position.

However, the individual machine for changing the runner can also be operated without its own control system for the targeted search for a working position if it is used in conjunction with another individual machine, for example for threading. In this case, the other individual machine must have a controller with which it drives close to a target spinning station at which the rotor change is to be carried out. The attaching machine moves from its parking position to the relevant point. Then the automatic shuttle changing device is also set in motion, likewise from its parking position from the other end of the spinning machine, whereby it approaches the automatic thread setting machine up to a certain distance. This distance can be maintained by preferably non-contact means for touching the position of the neighboring object. The rotor change is then carried out by the automatic runner change machine at a predetermined number of spinning positions, the automatic runner change machine being moved from spinning position to spinning position by a certain distance after each change operation. The new position in front of an automatic rotor changing machine can be achieved, for example, by moving the automatic rotor changing machine to a certain mark, which it scans with a suitable sensor, or by moving a stepper motor drive forward by a certain number of steps.

After the automatic shuttle changing machine has completed its changing cycle and moves back into its parking position or while the changing process is still in progress, the automatic thread setting machine starts working at the places where new runners were previously inserted. The spinning machine is started after completion of the thread application process at all changing points. The start can take place automatically if tax readiness, for example from Thread applicator, in its park position is reported to the spinning machine. When spinning new spinning bobbins, the spinning machine runs at reduced speed for spinning technology reasons. The speeds are increased according to a predetermined program in the control of the spinning machine after a certain time to normal operating speed. The working speed of the spinning machine can be selected so that there are also favorable speeds for the newly used runners on the spinning rings, so that they can break in without excessive wear. So the run-in program for the runners and the piecing program for the new cop are coordinated at the same time, whereby the lower working speed can be selected from the respective program as the target size. In practice, you will prefer to choose a uniform start-up program that represents a sensible compromise for both the runner run-in and the piecing.

The automatic rotor changing device can be equipped with its own energy supply station, for example a battery, or can obtain the electrical current required for its individual functions from the ring spinning machine via a rail. The individual machine for changing the rotor can also have its own electrically operated compressor for pneumatic functions. When the automatic rotor changing machine is integrated in the automatic attaching machine, there will be a common network for electric current or compressed air in one and the same machine. The rotor change machine can also be temporarily connected to another operating machine. The rotor changer or the individual machine in general can be controlled by another operating machine or by the spinning machine, or both the individual machine and the other automatic controls are controlled by a higher-level control system. The control of the automatic shuttle changing machine can be autonomous, with higher-level commands being transmitted by the control of the spinning machine in the park position, or it can also be controlled by the control of the thread-setting machine, commands being transmitted when both individual machines are in the above-defined, distant position to one another are. The transmission of data between the ring spinning machine and the individual machines or the individual machines with one another can be implemented, for example, by means of light barriers in the ASCI code. If a single machine is optionally used on several spinning machines, an overall control of the ring spinning machines in the spinning room must be provided, which coordinates the interaction of at least one rotor changing machine, one thread setting machine and several ring spinning machines.

The rotor change machine can be converted from one spinning machine to the other by an operator, or it can be provided with its own travel drive and travel its way from one spinning machine to another along a predetermined path. There are so many automatic thread applicators and automatic shuttle changers in a spinning mill that these devices are fully utilized. This allows the operating staff to be used for other more demanding tasks.

A sensible solution is obtained if, for example, two automatic machines are provided for a large spinning machine, an individual machine for threading being provided on each side of a spinning machine, and an automatic shuttle changing machine being available for several spinning machines. The rotor change machine then leaves a spinning machine after being in a particular one trimmed the runner change, and is next used in the spinning machine, where the next doffing is imminent. The time until the next doffing process is calculated by the control of the spinning machine or can also be known by a central operating control system. The runner change machine then spends the time until the next doffing process in a parking position in which information from the ring spinning machine can pass to the runner change machine. However, for a certain point in time before the next doffing process, the signal from the spinning machine can approach the thread applicator from the park position, which in turn moves before the doffing process into the vicinity of the spinning position at which the next rotor change is carried out. As soon as the automatic thread applicator has reached this point, the automatic shuttle changing machine can approach the automatic thread applicator so far that it comes to a stop at the point where it starts its work after the doffing process or after the spinning machine has been spun off. The observance of the distance and the exact positioning of the automatic shuttle changing machine to the relevant spinning station can be found by sensors and markings between the automatic shuttle changing machine and the thread setting machine on the one hand and between the machine and the spinning station on the other hand.

The automatic runner change machine can also be used for the exchange or insertion of new runners in a single spinning station outside of a change program, if it has been determined by another machine or a sensor with suitable means that a runner is missing in a certain spinning station or that the ring temperatures or rotor temperatures are too high. Such The device is described in German patent application P 41 17 953.6.

By means of the invention, unproductive times of the spinning machine as a result of the rotor change can be largely reduced if the rotor change takes place during a machine downtime which is necessary for other reasons, or can be almost completely avoided if the rotor change takes place after the doffing process has been restarted at a reduced working speed after the doffing process.

• Fig. 1 schematisch eine Textilmaschine mit einem Wanderautomaten,
• Fig. 2a, 2b Einsatzmöglichkeiten verschiedener Wanderautomaten gemäss der Erfindung an einer Textilmaschine,
• Fig. 3a Arbeitspositionen der Einzelautomaten an einer Spinnmaschine
• Fig. 3b ein Drehzahldiagramm
• Fig. 4 eine schematische Darstellung eines Wanderautomaten beim Einsatz an einer Ringspinnmaschine,
• Fig. 5 eine schematische Frontansicht eines Wanderautomaten mit vier Bedienungsstationen,
• Fig. 5a einen Teil eines Wanderautomaten,
• Fig. 5b zwei Spinnmaschinen mit Einzelautomaten in einer Spinnerei,
• Fig. 5c einen Serviceautomat und einen Fadenansetzautomat, die zwei Sektionen eines Wanderautomaten bilden können, in koordinierter Bewegung zueinander,
• Fig. 5d ein Abstandsregelsystem der Einzelautomaten zueinander,
• Fig. 5e eine Uebersicht über mehrere Spinnmaschinen mit einer zentralen Steuerung für die Spinnmaschinen und für einen Wanderautomaten, der sich entlang von Laufbahnen bewegt,
• Fig. 6 einen Teil einer Spinnmaschine mit einer Ueberwachungseinrichtung

In the following, the invention is described in detail with the aid of some exemplary embodiments. Show it:

• 1 schematically shows a textile machine with a walking machine,
• 2a, 2b possible uses of different automatic walking machines according to the invention on a textile machine,
• Fig. 3a working positions of the individual machines on a spinning machine
• 3b is a speed diagram
• 4 shows a schematic illustration of an automatic walking machine when used on a ring spinning machine,
• 5 shows a schematic front view of an automatic walking machine with four operating stations,
• 5a a part of an automatic walking machine,
• 5b two spinning machines with individual machines in a spinning mill,
• 5c shows a service machine and a thread-setting machine, which can form two sections of a walking machine, in coordinated movement to one another,
• 5d a distance control system of the individual machines to each other,
• 5e is an overview of several spinning machines with a central control for the spinning machines and for a walking machine that moves along raceways,
• Fig. 6 shows a part of a spinning machine with a monitoring device

Fig. 1 shows the textile machine with a machine head K and production sites P, which have the numbers 1,2,3 ... N for their identification. The automatic walker W shifts in the longitudinal direction of the textile machine to take up its working position.

Fig. 2 shows in a first embodiment the basic structure of the automatic walking machine W, which is composed of several individual machines with different or operating stations a, b, c, d, e. These are each designed for different functions. A certain production point P of a textile machine M is at Progress of the automatic walking machine W in contact with individual operating stations a, b, c. After completion of operations at the production points P, in front of which the automatic walking machine is located, it can advance by one or more positions. The entire action at a production site can be cut sequentially in individual cuts. This requires additional time for moving the walking machine from one position to the next. However, as soon as several neighboring production points P require actions, the automatic wanderer works simultaneously with several operating stations a, b, c at several production points 1, 2, 3. This increases its working speed significantly without the individual sub-functions having to run particularly quickly.

3a shows two automatic walking machines or individual automatic machines W and WL on a spinning machine M, each in a park position in solid lines and in dash-dotted lines in each case in a working position, both machines having approached to a defined distance. The machines can also be coupled or designed as a unit. In the simplest application, for example, the machine W is suitable for attaching auxiliary threads, and the single machine WL has means for changing the rotor. It is assumed that in the area between the production sites P with the number 100 and the number N, as shown in FIG. 3a, the runners are to be exchanged. For this purpose, the single machine WL moves from its parking position on the left of the spinning machine M at the so-called machine head KO to the spinning station N, the marking MA of which it recognizes with a sensor W50. The MA brand can also be used together with the W50 sensor for exact positioning of the WL stand-alone machine. In order for the WL stand-alone machine to arrive at the spinning station N, it must, for example, have a counter that can Count the number of markings passed and compare them with a specified target value.

If the individual machine WL is to be designed to change the rotor with as little effort as possible, it can also find its desired position depending on an exact neighboring position of the individual machine W. For this, a distance control system is necessary, which in Fig. 3a with SE, i.e. Transmitter-receiver unit is indicated and is explained in more detail below in a special embodiment. If the individual machine WL is to start work at the spinning station N, the individual machine W 'first drives to the spinning station X, which is in the vicinity of the target spinning station N, and takes a waiting position W', indicated by dash-dotted lines. The individual machine WL then moves in the direction of the individual machine W until it has approached it to such an extent that a predetermined distance has been maintained by means of the transmitter-receiver unit SE. Then he starts working on the spinning machine. After replacing the first runner, it moves together with the single machine W ′ to the left to the next spinning station, the single machine W leading the runner change machine WL. The individual machine W, which is suitable for attaching a thread in the spinning station, can subsequently replace the broken threads when changing the rotor.

As mentioned above, the replacement of the runners and the reattachment of the threads are carried out after a doffing operation in the spinning machine, the spinning machine either still standing still or already switched on again. It is assumed that the process of changing the runners between the spinning stations 100 and N is completed during a comparatively short phase, which is indicated by the time period A in FIG. 3b. During this period A the spindles of the spinning machine run at a comparatively low speed compared to the normal operating speed Anb. As mentioned above, a speed program in the form of target speeds for the spinning heads over time nk and / or a program for the target speeds nl of the runners over time can be specified in the controller or a control part M3 of the spinning machine according to FIG. 5b. The speed nk must remain below specified values for spinning technology reasons for a certain period after the spinning of new cops, and the target speed nl for the runners must not exceed certain values that increase over time, otherwise the runners would wear out prematurely. In practice, it should be possible to implement a run-in curve for the rotor speeds that is close to an ideal run-up curve NK for the spinning heads. Such a curve nl 'is shown as a staircase curve, which essentially follows the line MK in Fig. 3b. These considerations neglect the fact that the rotor speed is generally below the spindle speed.

Because only a part of the runners of a spinning machine M is replaced after doffing, a loss of production or an unproductive time during the change of the rotor can be largely avoided. In the best case, only the spinning station at which the runner is being changed is inoperative if the runner change takes place after starting in time phase A according to FIG. 3d. Otherwise, a small production loss must be accepted if the runners are exchanged before phase A. If the runners are exchanged before this phase A, new threads may only be able to enter the Runners are drawn in and attached to the roving when the spinning machine has started up.

Fig. 4 shows the structure of a walking machine W on a ring spinning machine.

A single production site of a ring spinning machine M is subdivided into a roving feed wrapper 119, a drafting system 130, a ring traveler combination 151, 152 and a spindle 114.

In the following description, it is assumed that a single automatic walking machine W is available, which performs both the function of threading and the function of changing the runner. As already mentioned above, individual machines can also take over the threading and runner changes.

• Die Bedienungsstation a entnimmt einer Vorgarnspule 120 Vorgarn 121 und führt es ins Streckwerk 130 ein. Anschliessend kann sie den Läufer 152 der betreffenden Produktionsstelle suchen, den alten falls nötig entfernen und einen neuen Läufer 152 einsetzen, wenn dies nicht durch einen separaten Einzelautomaten WL erledigt wird.
• Die Bedienungsstation b sucht das Fadenende 118 auf einem Spinnkops 116 und übernimmt eine Reinigungsaufgabe, beispielsweise an einer Auslaufwalze 130′ des Streckwerkes 130.
• Die Bedienungsstation c setzt den Faden 118 von unten her bei der Auslaufwalze 130′ des Streckwerkes 130 an.
• Die Bedienungsstation x wechselt Vorgarnspulen 120, die mehr oder weniger verbraucht sind, mit neuen Vorgarnspulen 120′. Sie sorgt bei einer gesonderten Fahrt des Wanderautomaten W durch einen Abschnitt der Ringspinnmaschine M für das betrennen von Vorgarn 121 bei nicht ausgelaufenen Vorgarnspulen 120.
• Die Bedienungsstation y besteht aus einem Saug- und Blasgerät, das ununterbrochen arbeitet und alle Elemente einer einzelnen Produktionsstelle reinigt.

4, the automatic walking machine W can now perform the following tasks:

• Operating station a takes roving spool 121 from roving spool 120 and introduces it into drafting system 130. Then she can search for the runner 152 of the relevant production site, remove the old one if necessary and insert a new runner 152 if this is not done by a separate individual automatic machine WL.
• The operating station b searches for the thread end 118 on a spinning cop 116 and takes over a cleaning task, for example on an outlet roller 130 'of the drafting device 130.
• The operating station c sets the thread 118 from below at the outlet roller 130 'of the drafting system 130.
• The operating station x changes roving bobbins 120, which are more or less used, with new roving bobbins 120 '. During a separate travel of the automatic walking machine W through a section of the ring spinning machine M, it ensures that roving 121 is cut when roving bobbins 120 are not running out.
• The operating station y consists of a suction and blowing device that works continuously and cleans all elements of a single production site.

The ring spinning machine M carries roving bobbins 120 in a frame upper part 101, including the drafting system 130, under which there is a suction tube 141 which opens into a suction channel 140. In the lower frame part 102 of the ring spinning machine M there is a pulley 112, which drives spindles 114 via a belt 113, which are seated in a spindle bearing 115. The spindles 114 carry a spinning cop 116 with the wound thread 118 on a sleeve 117. The winding is carried out by a rotor 152 on a ring 151 which is seated in a ring frame 150. Above it is a balloon ring 161 on a balloon ring holder 160, and above it a thread guide 171 in a thread guide holder 170. Drives 153, 163 and 173 in the form of tension elements are attached to ring frames 150, balloon ring holder 160 and thread guide holder 170. The drives 153, 163 and 173 are guided in a channel 190 parallel to the longitudinal axis of the ring spinning machine M.

4 and 5, the automatic walking machine W can be divided into two sections W1 and W2, which carry different operating stations a, y, c, x. The operator station x changes roving bobbins 120 as mentioned. However, it can also be used, for example, to check the condition of roving bobbins 120 with a sensor x2 on arm x1. A gripper x3 on the arm x1 can on the one hand grasp roving bobbins 120 or operate a clamping device 123 for roving 121 by the gripper 130 pressing a clamping lever 125 against a stop 124 if the supply of roving 121 into the drafting system 130 is to be interrupted.

The operating station a with a swivel arm a3 and a telescopic tube a1 can, for example, replace runners 152 which are pushed inside the telescopic tube a1. The telescopic tube a1 can be moved according to the double arrow a2 and additionally pivoted with the movement of the swivel arm a3. A swivel arm a4 with the telescopic tube a1 can also be swiveled. The automatic walking machine W can carry an operating station y on another level, which externally resembles the operating station a, but the operating station y, as mentioned, carries out suction and blowing operations by means of the telescopic tube a1.

Another similar operating station c can remove auxiliary thread H from a removal point E with a telescopic tube a1 on the same automatic walking machine W, the length of the auxiliary thread being controlled by a metering station Z.

In the lower part of the automatic walking machine W, a vehicle F can be seen which carries the sections W1, W2. A traction motor F1 and an impeller F2, which runs in a raceway L1, serve to drive the automatic walking machine W. Another track L in the upper part of the automatic walking machine W provides additional guidance.

5 shows, seen from the machine, the configuration of an automatic walking machine with the vehicle F, traction motors F1 for the track L1 and the sections W1, W2 which sit on the vehicle F. The sections W1, W2 can in principle be of the same design and carry different structures W3, W4, which in turn carry the operating stations c, x. Other operating stations a, b can be arranged directly on a section W1, so that different working heights of the operating stations result. The vehicle F can also be adapted to the respective requirements from modules F3, F4, which can be combined as desired.

The automatic walker can also be understood as a machine group, with at least two individual machines being coupled or operated in a coordinated manner. In this case, the coupling element K is missing, and a transmitter-receiver unit SE according to FIG. 3a takes its place, which is part of a distance control device between two individual machines.

The automatic walker W is advantageously designed so that it can also be used for special tasks. Due to a modular structure, which allows a configuration of the automatic walker adapted to the application, great flexibility can be achieved with moderate equipment expenditure. According to FIG. 5, the automatic walking machine W can also be composed of at least two units, which are referred to below as the service automatic machine W5 and the automatic thread applicator W6. Both machines can be coupled via the coupling element K, for example in the lower part of the vehicle modules F3 and F4, it being possible for this coupling to be elastic or rigid. With an elastic coupling, which only ensures the distance of the machines from each other 5 additional wheels F2 'each necessary on a vehicle F3, F4.

If the coupling element K is missing, the automatic service machine W5 and automatic thread application machine W6 can be operated individually, although it can be expedient if they work in a coordinated manner and run in short supply along the textile machine M. Such an operating mode can be useful, for example, for a preventive program-based replacement of the rotors 152 of a spinning machine M.

The service machine or individual machine W5 takes over the replacement of the runners 152. It moves freely from one spinning machine M to another in the manner of a driverless transport device. He sits down automatically on a career path L1, which is provided for the automatic thread applicator W6, which is constantly operating on the spinning machine, and travels behind the automatic thread applicator W6 to one end of the spinning machine M. If the automatic service device W5 is to travel independently from one spinning machine M to another he an additional chassis F ', as indicated schematically in Fig. 4.

For the coordinated use of two individual machines, for example the service machine W5 and the thread application machine W6, various additional devices must be available, which are explained with reference to FIGS. 5b ... 5e.

In a spinning mill there are several spinning machines M, M ′, M˝ side by side, each of which is divided into a central part M2, a gear part M1 and, for example, a control part M3. Runways L1, along which the individual machines can move, run along the middle part M2 on both machine sides. For example, with the spinning machine M 'a runner change is carried out at the individual spinning stations or groups thereof, the service machine W5 must be controlled to the spinning machine M'. It is oriented along a career path L2 that can have a non-contact effect on the W5 service automat. The career path L2 and the career paths branching off in the direction of spinning machines are advantageously let into the floor of the spinning mill and act inductively on the service automat W5. The spinning machines M, M ', M˝ are connected via signal lines E1, E2, E3 to a central control system EZ according to FIG. 5e. There is also a connection to the career path L2 and the career paths L3, L3 'via signal lines, only one signal line E4 being shown in FIG. 5e. Control systems of this type for floor-guided vehicles which are intended to move in specific directions in a manufacturing building are known from transport technology.

It is assumed that the service machine W5 moves after leaving the path L2 along the path L3˝ to the spinning machine M ′ in order to change the rotor there. Via the central control EZ, the automatic thread applicator W6 can receive the command on the spinning machine M ′ to move in the direction of the gear part M1 ′ along the path L1 in order to expect the service automat W5 there at the end of the path L1. After the arrival of the W5 service machine, both can start moving in a coordinated manner as a machine group. The coordinated machine group forms, as described above, the automatic walker W. Conversely, the service machine W5 can wait for the arrival of the thread applicator W6 at the end of the track L3˝ at the gear part M1 ′, which program-controlled monotonously back and forth along the track L1 arrives.

If the service machine W5 and the thread applicator W6 have started moving together, they drive to the other end of the spinning machine at the control unit M3, M3 'or program-controlled to any point from where the runners of a number of spinning positions are then exchanged. The step-by-step movement of the automatic service machine W5 and the automatic thread application machine W6 can be determined by the working rhythm of, for example, the automatic thread application machine W6, the individual automatic machine W5 then following the movements of the automatic thread application machine W6.

The individual machines orient themselves with sensors W50 and W60 relative to markings M50 and M60 on the spinning machine M ', as indicated in FIG. 5d. In addition, a distance control system can be present, which consists, for example, of a light transmitter W52 on the service automat W5, whose beam W55 reflected by the thread applicator W6 is received by one of the receivers W54a, W54b, W54c.

For distance control, the speeds of the individual machines are controlled by their drives so that the reflected light beam W55 is incident between the receivers W54a and W54c at the receiver W54b. In addition, there may be further receivers, for example receivers W53, which report the maximum distance between the individual machines in the case of the receiver W53 when a light beam W56 is incident there, or a minimum distance between the individual machines to their control systems SW5 and SW6.

The control systems SW5 and SW6 of the individual machines W5 and W6 are connected to the traction motors F1 and F1 '. The control signals of the receivers W53, W54 etc. determine the running speed of the drive motor F1 and thus the speed via the control SW5 of the service automat W5 of the individual machine W5 in relation to the speed of the automatic machine W6. Since the machines can move in the spinning mill along the track L2, L3, L3 ', etc., they must have a collision protection, for example in the form of an elastic bracket W51 according to FIG. 5c, during the deformation of which the drive motor F1 is stopped immediately, so Damage or injury can be avoided. The W52 transmitter and the W54 receiver can also be used for backup.

• Der Einzelautomat W5 greift gemäss Fig. 5a und 4 oberhalb des Ringes 151 mit dem Entnahmehaken b′ am Rohr b1 in den Umlaufbereich des Fadens 118, wodurch dieser bricht. Dann legt das Rohr b1 einer Bedienungsstation a gemäss Fig. 5 und 5a den Entnahmehaken b′, der im Endbereich elastisch gestaltet ist, an den Ring 151, wodurch der Läufer 152 auf den Entnahmehaken b′ aufläuft. Durch Zurückziehen des Rohres b1 gemäss Pfeil b1′ wird der Läufer 152 vom Ring 151 gelöst und durch das Rohr b1 abgesogen. Der Entnahmehaken b′ muss so relativ zur Mündung des Rohres b1 angebracht sein, dass der Läufer 152 sicher in das Innere des Rohres b1 gelangt. Von dort wird er in einen Speicher gesaugt.
• Für die Funktion des Läuferauswechselns kann es auch zweckmässig sein, eine zusätzliche Bedienungsstation d gemäss Fig. 5,6 im Serviceautomat anzuordnen, wenn die Spindel 114 mittels eines Riemens 113 angetrieben wird. Die Bedienungsstation d arbeitet in der Ebene der Bedienungsstation a gemäss Fig. 5 und kann nach Fig. 6 eine Bremse BR für die Spindel mittels eines Armes d1 betätigen, bevor sich der Entnahmehaken b′ in Fig. 5a dem Ring 151 nähert. Das Anlegen des Entnahmehakens b′ erfolgt dann während eines kurzzeitigen Stillstands der Spindel 114 und somit des Läufers 152. Der Arm d1 löst dann nochmals kurzzeitig die Bremse BR, wodurch der mit der Spindel 114 rotierende Faden 118 den Läufer 152 auf den Entnahmehaken b′ aufschleppt. Nach Auflaufen des Läufers 152 am Entnahmehaken b′ reisst der Faden ohne Eingriff eines weiteren Bedienungsorgans von selbst. Wenn für jede Spindel 114 ein Motor EM anstatt eines Riemens 113 vorgesehen ist, kann nach Fig. 6a die Steuerung ST1 der Spinnmaschine, welche mit der Steuerung ST2 des Wanderautomaten W in Verbindung steht, den betreffenden Motor EM vor dem Anlegen des Entnahmehakens b′ kurzzeitig ausschalten und nachher nochmals kurz einschalten, womit der Läufer 152 wie oben beschrieben sicher auf den Entnahmehaken b′ gelangt und entsorgt werden kann. Das Ein- und Ausschalten des Motors M kann auch durch den Arm d1 und den Schalter MS nach Fig. 6 bewerkstelligt werden. Hilfsweise kann auch ein System von mehr oder weniger tangential zum Ring angeordneten Düsen D den Läufer an den Entnahmehaken blasen, wie in Fig. 5a gezeigt ist.
• Nun wird ein neuer Läufer aus dem Teleskoprohr a1 der Bedienungsstation b nach Art eines handelsüblichen Handgerätes aufgesetzt. Ein rohrförmiges Einsetzgerät für Läufer ist beispielsweise im deutschen Gebrauchsmuster Nr. G 83 29 000.1 publiziert.
• Der dem Serviceautomat W5 folgende Fadenansetzautomat W6 wird darauf vor die Spinnstelle mit dem neuen Läufer 152 bewegt und setzt mit der Bedienungsstation c den Faden 118 neu an.

Before both machines start moving, the speed of the spinning machine M is reduced to the starting speed of a Läüfer run-in program. The replacement of the rotors 152 now begins with the spinning machine M running, with only one spindle 114, on which the rotor exchange takes place, being stopped. The function can run as follows:

• The individual machine W5 engages according to FIGS. 5a and 4 above the ring 151 with the removal hook b 'on the tube b1 in the circumferential area of the thread 118, whereby this breaks. 5 and 5a, the removal hook b ', which is designed to be elastic in the end region, on the ring 151, as a result of which the rotor 152 runs onto the removal hook b'. By withdrawing the tube b1 according to arrow b1 ', the rotor 152 is released from the ring 151 and sucked through the tube b1. The removal hook b 'must be attached relative to the mouth of the tube b1 so that the rotor 152 safely enters the interior of the tube b1. From there it is sucked into a storage tank.
• For the function of changing the rotor, it can also be expedient to have an additional operating station d According to Fig. 5,6 to be arranged in the service machine when the spindle 114 is driven by a belt 113. The operating station d works in the level of the operating station a according to FIG. 5 and can operate a brake BR for the spindle by means of an arm d1 according to FIG. 6 before the removal hook b 'in FIG. 5a approaches the ring 151. The application of the removal hook b 'then takes place during a brief standstill of the spindle 114 and thus the rotor 152. The arm d1 then briefly releases the brake BR again, as a result of which the thread 118 rotating with the spindle 114 drags the rotor 152 onto the extraction hook b' . After the runner 152 has run up on the removal hook b ', the thread breaks by itself without the intervention of another operating member. If a motor EM instead of a belt 113 is provided for each spindle 114, the control ST1 of the spinning machine, which is connected to the control, can be carried out according to FIG ST2 of the automatic walking machine W is connected, briefly switch off the relevant motor EM before the removal hook b 'is put on and then switch it on again briefly, so that the rotor 152 can safely reach the removal hook b' as described above and be disposed of. Switching the motor M on and off can also be accomplished by the arm d1 and the switch MS according to FIG. 6. Alternatively, a system of nozzles D arranged more or less tangentially to the ring can blow the rotor on the removal hook, as shown in FIG. 5a.
• Now a new rotor is placed from the telescopic tube a1 of the operating station b in the manner of a commercially available hand-held device. A tubular insertion device for runners is published, for example, in German Utility Model No. G 83 29 000.1.
• The automatic thread applicator W6 following the service machine W5 is then moved in front of the spinning station with the new runner 152 and repositions the thread 118 with the operating station c.

For moving the service machine W5 from one spinning machine M to another, for example, an inductive guide strip L3, L3 'in the hall floor is sufficient. A battery charger for the batteries B of the service machine W5 can be omitted, since these are only required when moving from one spinning machine M to another. The service life of the service machine W5 on a spinning machine is used to recharge the batteries B according to FIG. 4, a pantograph S being scanned in the spinning machine M or the electrical energy being transmitted inductively. 4, an electrical conductor EL is provided between the automatic walking machine W and the spinning machine M.

Claims (11)

Operating method for an automatic walking machine, which handles at least one individual automatic machine, for a textile machine, in particular a spinning or twisting machine, which is equipped with a number of similar production sites, characterized in that
any individual automatic machine (W5) is only used when the spinning machine M is currently switched off or when operating conditions exist after the restarting of the spinning machine M, which must necessarily be fulfilled for a certain time after the individual automatic machine has been used. A method according to claim 1, characterized in that
the rotor change over a predetermined number of spinning positions only takes place if the spinning machine is operated after the change of the rotor not only with consideration of the change, but also for other reasons with reduced working speed. A method according to claim 1 or 2, characterized in that
the rotor change is carried out during a machine standstill before or after the doffing process or after restarting the textile machine, and that after the doffing process a runner run-in program is run at the same time as piecing at a reduced working speed, which program runs simultaneously with the piecing process at a reduced working speed of the spinning machine. Method according to one of the preceding claims, characterized in that
a single machine is provided for the rotor change, which is operated separately from or coupled with another single machine, the other single machine (W6) primarily for drawing in the spun material from a roving spool (120) to the spindle (114) or vice versa is trained. Method according to one of the preceding claims, characterized in that
A program memory is provided in the control of the spinning machine (M), which requests the exchange of runners via a number of adjacent spinning stations (100 ... N), and that the runners of the spinning stations connected to it are exchanged during the next doffing process, so that all Runners in a spinning machine are only renewed after several exchange actions or doffing processes. Method according to one of the preceding claims, characterized in that
the command to use the individual machines (W5) to exchange the runners from the spinning machine (M) to the relevant individual machine in its parking position (W50, MA) is made via a suitable data transmission point (SE). Method according to one of the preceding claims, characterized in that
When new spinning heads are pieced, the spinning machine is operated at a reduced speed according to a predetermined program in the control of the spinning machine (M), and that the working speed is gradually increased, the speed values being chosen over time so that the new ones used runners result in favorable speeds that do not result in excessive wear. Method according to one of the preceding claims, characterized in that
After the doffing process and the change of the runner or when changing the runner while piecing new heads, a run-in program for the runners and a piecing program for the new heads are run in a coordinated manner, the lower reference working speed being selected from the respective program as the target size. Method according to one of the preceding claims, characterized in that
the individual machine (W5) for changing the runner is temporarily used on different textile machines (M, M '), whereby the textile machine with the requirements for a change of runner is taken into account. Automatic walking machine for carrying out the method according to one of the preceding claims, characterized in that
one section of the automatic walking machine (W) is designed as an individual machine (W5) for changing the runner, and that another section can be operated as a thread-setting machine (W6) after the runner change. Automatic walking machine according to the preceding claim, characterized in that
the individual machines (W5, W6) are coordinated but can be used separately.

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