EP4245707A1 - Method and device for operating a winding machine - Google Patents

Abstract

The invention relates to a method and a device for operating a dishwasher (1) which has a large number of work stations (2) on which cops (3) were created on ring spinning machines (4) upstream in the production process and which contain relatively little yarn material have, are rewound into large-volume cheeses, with the work stations (2) of the dishwasher (1), in order to be able to process a plurality of different yarn lots at the same time, divided into different winding sections (20) and the cops (3) according to the yarn lot they have, are identified by the color of their bobbin tubes (7). According to the invention, it is provided that the transport plates (8) of the incoming cops (3), each of which has a storage medium (16) containing information, from which it can be seen which color The bobbin tube (7), which must have a cop (3) located on the transport plate (8), must be read out so that a recording (15) is created using a camera (10) having an image processing device (9), which shows the bobbin tube (7). cop (3) brought up on the transport plate (8) and several reference sleeves (28, 29, 30) and that the image processing device (9) checks whether the color of the bobbin tube (7) of the cop (3) brought up on the transport plate (8). ) corresponds to the color information stored on the transport plate (8) and whether the color of the delivered bobbin tube (7) matches the color of one of the reference tubes (28, 29, 30) kept ready.

Description

The invention relates to a method and a device for operating a winding machine which has a large number of workstations on which cops, which were created on ring spinning machines upstream in the production process and which have relatively little yarn material, are rewound into large-volume cheeses, the workstations of the winding machine In order to be able to process a number of different yarn lots at the same time, they are divided into different winding sections and the cops are identified by the color of their bobbin tubes according to the yarn lot they have.

It has long been common practice in the textile industry to use ring spinning machines and winding machines to produce particularly high-quality, for example relatively fine, yarns. In connection with the operation of such textile machines, it is very important that when different yarn lots are created at the same time, it is ensured that all cheeses in a yarn lot are always manufactured according to type. The cheeses produced on the winding machine must therefore only be wound with cops of the specified yarn lot. If a cop is wound onto a cross-bobbin whose sections do not match, this usually makes the entire yarn batch unusable, since it is usually no longer possible to determine which of the cross-bobbins of the created yarn batch the "wrong" cop was wound onto.

The reason for such incorrect templates is, for example, the insertion of a sleeve from the wrong batch onto a transport plate.

Furthermore, in a machine network in which the delivery of the cops and the return delivery of the empty bobbin tubes takes place by means of separate, mobile transport devices and in which a known flat circular conveyor is used to load the bobbin and tube transport system of the winding machine, it can happen that in the flat circular conveyor accidentally lands a cop that has the wrong section of yarn.

Likewise, especially in so-called multi-lot systems, in which several ring spinning machines are usually connected to at least one winding machine via a special bobbin and tube transport system and which are often operated in so-called multi-lot operation, there is a risk that one of the winding machine's work stations A cop with the “wrong” batch of yarn is accidentally and unnoticed being rewound. That means at Multi Lot Systems in which, for example, cops are manufactured on each of the ring spinning machines, which have their own yarn section and in which these different cops are then conveyed via a common bobbin and tube transport system to a winding machine, which in turn has different winding sections for the different cops The risk of a cop being processed with the “wrong” batch of yarn is relatively high.

In order to ensure that when producing different yarn lots, the cops manufactured at the workstations of ring spinning machines always have the specified yarn lot, which can be reliably rewound into correct cheeses at the workstations of a winding machine, various methods and devices have already been developed in the past which should ensure that the cops created on ring spinning machines are always fed to the workstations of a downstream winding machine in the same type. This means that the known methods and devices are intended to prevent a cop that has a different yarn lot from being accidentally rewound at the workstations of a winding machine when a specific yarn lot is being created.

Through the DE 39 11 799 A1 For example, a ring spinning machine is known which is designed in such a way that cops can be produced on the spinning points of the two long sides of the machine, each of which has a different batch of yarn. This means that, for example, cops are manufactured on the spinning stations on the front of the machine, which have the yarn lot The yarn sections of the cops are identified by the color of their bobbin tubes.

The ring spinning machine also has its own bobbin and tube transport device for conveying transport plates on which the finished cops can be positioned and which have information carriers in which it is recorded which spinning station manufactured the cop in question. The ring spinning machine is also connected to a downstream winding machine via an information system in such a way that if a cop is recognized as faulty during the rewinding process, it is possible to identify the spinning point of the ring spinning machine that created the faulty cop. Furthermore, in this known device, a pivotable cop converter with an integrated counting device is installed at the end of the bobbin and tube transport device of the ring spinning machine, which makes it possible to remove cops from the bobbin and To transfer the tube transport device of the ring spinning machine to the bobbin and tube transport system of a downstream winding machine and to count it.

The bobbin and tube transport system of the winding machine has two winding sections arranged one behind the other, into which the cops, depending on the color of their bobbin tube, are introduced and wound into cross-wound bobbins of a specific yarn lot. This means that the bobbin and tube transport system of the winding machine is equipped with a feed system that has color sensors that control special switches of the winding machine's own bobbin and tube transport system in such a way that the cops, identified by the color of their bobbin tubes, are each transferred to the winding section of the winding machine and there be rewound in which this yarn batch is created.

The device described above has in principle proven itself in practice, but has the disadvantage that assembly errors that occur are often not noticed and are therefore not displayed and eliminated.

If, for example, when loading the mandrels of the spinning stations of the ring spinning machine, instead of a green bobbin tube, as would be correct, a red bobbin tube was accidentally threaded onto the mandrel of a spinning station of the ring spinning machine, the cop in question will later also be guided into the winding section of the winding machine, in which Bobbins with red bobbin tubes are rewound, even though the bobbin has the yarn section marked by green bobbin tubes.

As already explained above, processing a cop with the wrong batch of yarn can result in the cheeses of the entire batch of yarn being unusable.

In the DE 43 15 258 C2 A so-called multi-lot system is described and shown, that is, a machine network in which three ring spinning machines are connected via a bobbin and tube transport system to a winding machine, which in turn has three separately approachable winding sections. In this known device, cops are manufactured on each of the three ring spinning machines, each of which has a specific predeterminable yarn section, the yarn section of the cops being characterized, as usual, by the color of their bobbin tubes. Furthermore, the transport plates of the ring spinning machines are designed differently, that is, the transport plates of the first ring spinning machine point For example, each has a circumferential guide groove in the upper area of the support plate and is blue. The transport plates of the second ring spinning machine are red and each have a circumferential guide groove in the lower area of the support plate. The transport plates of the third ring spinning machine, on the other hand, are green and have a circumferential guide groove in the middle area of the support plate.

Special selector devices are also arranged in the area of the three winding sections of the winding machine, which mechanically direct the transport plates into the associated winding section according to the position of their guide groove. This means that the special design of the transport plates and appropriately designed selector devices ensure that, for example, the transport plates of the first ring spinning machine only go into the first winding section of the cross-automatic machine, the transport plates of the second ring spinning machine only go into the second winding section of the cross-automatic machine and the transport plates of the third ring spinning machine can only be fed into the third winding section of the cross-automatic machine. A sensor device arranged in the area of the bobbin and tube transport system of the winding machine also checks whether the color of the bobbin tube and the color of the transport plate have a correct combination.

With the device described above, the risk that is always present in multi-lot operation that a cop of the wrong yarn lot is accidentally and unnoticed being rewound at one of the work stations of a winding section of the winding machine can be significantly reduced, but the known device has the disadvantage that it is relatively complex and therefore quite expensive. This means that not only are differently designed transport plates and corresponding mechanical selection devices required for each of the ring spinning machines, but also additional color sensor devices with which incoming cops are checked for a correct combination of the color of the bobbin tube and the color of the transport plate. To operate the Multi Lot system described above, considerable effort is always required if modifications are to be made, for example the number of yarn lots to be finished is changed.

In the DE 10 2007 057 921 A1 In connection with the multi-part operation of textile machines producing cross-wound bobbins, a method is described that enables automated identification of bobbin tubes based on characteristic features.

In this known method, an image of the coil tube to be identified is created, preferably by means of a CCD camera, and compared in an image processing device with image information from previously recorded, stored and already classified coil tubes. If at least one detectable match between the existing coil tube and one of the already classified coil tubes is presented, the coil tube is considered to be identified. The method or device according to DE 10 2007 057 921 A1 Although it enables a relatively reliable identification of coil tubes based on special features or colors, the device always requires the use of trained personnel, especially for its commissioning or modifications, since the characteristics of the reference tubes to be compared are always "teached" into a special image processing device beforehand. Need to become.

Based on the aforementioned prior art, the invention is based on the object of developing a method that reliably ensures a pure supply of cops. This means that a method and a device are to be created with which it is possible to avoid in a relatively simple manner that when operating a machine group, especially in multi-lot systems that work in multi-lot operation, a cop is accidentally placed on a cross-wound bobbin of one of them unrelated yarn section is rewound.

This object is achieved according to the invention in that the transport plates of the cops delivered, which each comprise a storage medium containing information, from which it can be seen which color the bobbin tube of the cop located on the transport plate must have, are read out by means of a camera having an image processing device a recording is created which shows the bobbin tube of the cop brought to the transport plate as well as several reference tubes and that the image processing device checks whether the color of the bobbin tube of the cop brought to the transport plate corresponds to the color information stored on the transport plate and whether the color of the delivered bobbin tube corresponds matches the color of one of the reference sleeves provided.

Advantageous embodiments of the invention are the subject of the subclaims.

The method according to the invention has the particular advantage that safe multi-stage operation of a machine combination ring spinning machine/winding machine can be guaranteed without great financial outlay and without the use of specially trained personnel. According to the present method, it is simply read out which color information the transport plate of a delivered cop has and, by means of a camera having an image processing device, it is checked whether the color information stored on the transport plate matches the color of the bobbin tube of the delivered cop and a color comparison is carried out with one of the reference tubes provided. The order of the comparisons to be carried out can be varied within the scope of the invention. The color information can be stored either directly or indirectly, which means that either the color of the sleeve can be taken explicitly from the storage medium or the storage medium contains information that allows a conclusion to be drawn about the color of the coil sleeve.

This ensures that cops are not distributed to one of the winding sections of the winding machine depending on the color of their bobbin tube alone, but that before the cops are introduced into the winding section, a detailed check of the cops takes place, including one in the storage medium of the transport plate stored color information is taken into account and that transport plates that have dubious copings are identified immediately.

In an advantageous embodiment of the method according to the invention, it is provided that if the image processing device of the camera determines that the color of the bobbin tube of the cop brought to the transport plate does not correspond to the color information contained on the transport plate or does not correspond to the color of one of the reference tubes, this is considered Information is recorded on the transport plate of the delivered cop and the cop in question is subsequently discharged into a device in the winding machine. This means that such a cop is not transported to a workstation on the winding machine, but instead is transported to a device on the winding machine, in which the cop is manually or automatically removed from the transport plate and thus removed from the material flow. The documentation of the information if the color of the bobbin tube does not match the stored color information and/or the color of a reference tube can be done, for example, directly in the area of the camera or in a downstream device in which a writing device is present anyway.

In the device for carrying out the method described above, a control station is installed in the entrance area of a winding and empty tube transport system of the winding machine, which checks each transport plate of an incoming cop to see whether the in A statement contained in an electronic storage medium on the transport plate about what color the bobbin tube of the delivered cop must have corresponds to the actual color of the bobbin tube of the delivered bobbin and whether the color of this bobbin tube matches one of the colors of the reference tubes kept ready. Such a control station can therefore be used to easily check whether the cop positioned on the incoming transport plate has a correct batch of yarn, that is, whether the arriving cop really has the batch of yarn that belongs to the batch of yarn suggested by its bobbin tube.

With such a device, a sorted supply of the cops according to their yarn batch to the winding stations of the winding machine, in which they are rewound into cheeses, can be guaranteed. The double check consists, on the one hand, of comparing whether the color of the bobbin tube on the transport plate corresponds to a color of the reference tubes and, on the other hand, of comparing whether the color of the bobbin tube on the transport plate corresponds to the stored color information on the storage medium of the corresponding transport plate. The color information for the bobbin tube is stored directly or indirectly on the storage medium of the transport plate. What is essential to the invention is the clear capture of the color information and less the type of data used for this purpose.

In an advantageous embodiment, the control station installed in the entrance area of the bobbin and empty tube transport system of the winding machine has a reading device, a camera equipped with an image processing device and a frame for holding several reference tubes, the color of one of the reference tubes corresponding to the color of the bobbin tubes of a yarn lot to be created matches.

The reading device records the information contained in the electronic storage medium of a transport plate about the required color of the bobbin tube of the delivered cop, while the camera uses its image processing device to check whether the color information of the storage medium and the actual color of the present bobbin tube match. The camera equipped with an image processing device is designed in such a way that differences between the color of the bobbin tube of the delivered cop and the color information contained in the storage medium of the transport plate, as well as differences between the color of the bobbin tube of the delivered cop and the color of a reference tube arranged in the frame can be determined immediately. This means that the camera uses a comparison of the color of the bobbin tube of the delivered cop with the colors The reference tubes can immediately and reliably check whether the cop delivered belongs to one of the yarn lots currently being processed.

The reference sleeves can be easily positioned in the frame by unplugging or hanging or arranging them in a designated fastening option. A reflection film or a light source can be arranged as the image background in the control station behind the reference sleeves. This can help ensure that the contours of the sleeves can be recognized more reliably. It is possible and conceivable within the scope of this invention that, in addition to the color matching of the bobbin and reference tubes in the control station, the thickness of the tubes and thus indirectly the diameter is also compared in order to further verify the correct feeding of the bobbins to the winding stations.

It is also possible for a polarizing filter to be arranged in front of the camera in order to minimize reflections on the sleeves and thus obtain a more reliable result of the adjustment of the coil sleeve to the reference sleeves.

In a further advantageous embodiment it is provided that the camera is designed as a vision sensor.

Such vision sensors are devices that can be purchased relatively inexpensively and can be used advantageously in various subject areas, which, among other things, have integrated lighting, usually in the form of light-emitting diodes, an integrated lens and an imaging sensor, for example a CCD sensor. Furthermore, such vision sensors are usually equipped with an image and data memory designed as RAM, a real-time image processing processor and an interface to an external computer.

The invention is explained in more detail below using exemplary embodiments shown in the drawings.

Fig. 1

in Draufsicht eine so genannte Multi Lot Anlage, das heißt, einen Maschinenverbund, bestehend aus drei Ringspinnmaschinen und einer Spulmaschine, bei dem im Eingangsbereich des Spulen- und Hülsentransportsystems eine erfindungsgemäße Vorrichtung angeordnet ist,

Fig. 2

in perspektivischer Seitenansicht eine als Kontrollstation ausgebildete erfindungsgemäße Vorrichtung mit einer Leseeinrichtung, einer mit einer Bildverarbeitungseinrichtung ausgestatteten Kamera und einem Gestell zum Positionieren von Referenzhülsen,

Fig. 3

eine Aufnahme der mit einer Bildverarbeitungseinrichtung ausgestatteten Kamera der Kontrollstation.

It shows:

Fig. 1

in plan view a so-called Multi Lot system, that is, a machine network consisting of three ring spinning machines and a winding machine, in which im A device according to the invention is arranged in the entrance area of the bobbin and tube transport system,

Fig. 2

in a perspective side view a device according to the invention designed as a control station with a reading device, a camera equipped with an image processing device and a frame for positioning reference sleeves,

Fig. 3

a recording from the camera at the control station, which is equipped with an image processing device.

The Fig. 1 shows a schematic top view of a so-called multi-lot system, that is, a textile machine network between at least one ring spinning machine 4 and a winding machine 1.

In the present exemplary embodiment, the ring spinning machine 4A, 4B, 4C are connected to a winding machine 1 via a bobbin and tube transport system 14. As usual, the three ring spinning machines 4A, 4B, 4C each have a large number of spinning stations 18 on both machine longitudinal sides, on which cops 3 are produced, which become feed bobbins in the subsequent winding process. The yarn section that the cops 3 to be produced should have can vary from ring spinning machine to ring spinning machine. This means that the ring spinning machines 4A, 4B, 4C are each equipped with a central control unit, which can be used to set which yarn section the cops 3 to be produced on the spinning stations 18 of the ring spinning machines 4A, 4B or 4C should each have.

As can be seen, parts of the bobbin and tube transport system 14 are also arranged in the area of the ring spinning machines 4A, 4B, 4C, that is, in front of the spinning stations 18 of the ring spinning machines 4A, 4B, 4C, conveyor belts 11 are installed, which can be driven and by means of them If necessary, transport plates 8, the cops 3 or empty bobbin tubes 7 can be transported.

In order to be able to transfer the cops 3 manufactured on the spinning stations 18 of the ring spinning machines 4A, 4B, 4C to the transport plates 8 positioned in front of the spinning stations 18, the ring spinning machines 4A, 4B, 4C are equipped with (not shown) on each of their longitudinal machine sides. Lifting devices, so-called doffing devices. With these doffing devices, the finished cops 3 can be removed from the spinning mandrels of the spinning stations 18 and transferred to the transport plates 8. The cops 3, which are then positioned in a vertical orientation on the transport plates 8, are then conveyed via the bobbin and tube transport system 14 to the winding machine 1 and there are wound into cheeses of an assignment predetermined by the yarn section of the cops 3. Accordingly, the empty bobbin tubes 7 unwound in the winding machine 1 can be returned to the spinning stations 18 of the ring spinning machines 4A, 4B, 4C via the bobbin and tube transport system 14.

The ring spinning machines 4A, 4B, 4C also have, preferably in the end region of each of their rows of spinning stations arranged along the machine's longitudinal side, a writing device 19 with which electronic storage media 16 arranged in the transport plates 8 can be labeled. This means that the transport plates 8 each have a writable and readable electronic storage medium 16, preferably a so-called RFID tag, in which, among other things, information about the color of the bobbin tube 7 of the cop 3 transported on the transport plate 8 can be stored must.

This means that in a multi-lot operation of a multi-lot system, in order to avoid that a "wrong" cop 3 is accidentally processed when creating cheeses for a specific yarn lot, which usually leads to the loss of the entire yarn lot, but is often visible to the naked eye It is difficult to see which yarn section a cop 3 has, the different yarn sections of the cops 3 are identified by the color of their bobbin tubes 7 and the required color is documented directly or indirectly in the storage medium 16 of the associated transport plate 8.

As can be seen, are in Fig. 1 Not only the ring spinning machines 4A, 4B, 4C and the bobbin and tube transport system 14 are shown relatively schematically, but also the cross-winding machine 1, that is, the representations of the Fig. 1 are limited to the essentials. Similar to the ring spinning machines 4A, 4B, 4C, part of the bobbin and tube transport system 14 is also arranged in the area of the winding machine 1. This part of the bobbin and tube transport system 14, which, as usual, serves, among other things, to supply the work stations 2 of the winding machine 1 with fresh bobbins 3 or to dispose of the empty wound bobbin tubes 7, has, for example, three arranged one behind the other, separately controllable, each with several Workstations have 2 equipped winding sections 20A, 20B and 20C. At these workstations 2, cross-wound bobbins 5, each of a specific type, are used if necessary Yarn batch made. The winding sections can also include certain work stations 2 that are not arranged in blocks.

In practice, different coil and tube transport systems 14 are known. A known coil and tube transport system 14, which is described here as an example, has a so-called cop feed route 21, from which three connecting routes 22 branch off. The connecting sections 22 are each connected at the end to a storage section 23, which is divided into three areas by blocking means (not shown). This means that a first area of the storage section 23 is assigned to the winding section 20A, a second area to the winding section 20B and the third area to the winding section 20C. From the storage section 23, which is alternately switched from left-hand to right-hand rotation, cross transport routes 24 depart, each of which leads to one of the work stations 2 of the winding machine 1 and which in turn are connected at the end to a tube return section 25.

In this exemplary embodiment, a device 12 also branches off from the tube return route 25 on the output side of the bobbin and tube transport system 14 of the winding machine 1, which is designed here, for example, as a hand preparation route in which faulty cops 3 can be temporarily stored.

The transport plates 8, which transport the finished cops 3 or the empty bobbin tubes 7, not only, as explained above, each have an electronic storage medium 16, by means of which information, for example, the color of the bobbin tube 7 on the transport plate 8 arranged cop 3 concern, can be transmitted, but the transport plates 8 are also in this exemplary embodiment, as in Fig. 2 shown, equipped with a circumferential, ferromagnetic ring 6.

As in Fig. 1 further indicated, several reading devices 27 and switches 26, designed in this exemplary embodiment as electromagnetic switches, are also positioned in the area of the cop feed path 21 of the bobbin and tube transport system 14 of the winding machine 1. The electromagnetic switches arranged in the entrance area of the connecting routes 22 are each connected to their associated reading device 27, which in turn communicates with the electronic storage medium 16 integrated into the transport plates 8 and controls the associated switch 26 according to the information recorded. This means that the electromagnetic switch 26, which is energized in the activated state, conducts one if necessary Ferromagnetic ring 6 surrounded transport plate 8 into the adjacent connecting section 22 and thus into one of the winding sections 20A, 20B or 20C.

In the entrance area 13 of the bobbin and tube transport system 14 of the winding machine 1, a device according to the invention, designed as a control station 5, is also installed. This control station 5 also has a reading device 27 which records the information from the electronic storage medium 16 integrated into the transport plate 8. In the area of the control station 5, a camera 10 is also installed, which has an image processing device 9. In the area of the control station 5, a frame 17 is also arranged, which is equipped with reference coils 28, 29, 30. That is, in this exemplary embodiment, three reference tubes are inserted into this frame 17, which indicate by their color which color a bobbin tube 7 of a specific yarn lot must have. The reference bobbin 28 identifies, for example, cops 3 which have a yarn section X and whose bobbin tube 7 is red. The reference bobbin 29, for example, identifies cops 3 which are wound with a piece of yarn Y and whose bobbin tube 7 is green. Accordingly, the reference bobbin 30 points to cops 3, which have a yarn section Z and whose bobbin tube 7 is blue.

The Fig. 2 shows a side view and on a slightly larger scale of a control station 5 arranged in the entrance area 13 of the cop feed line 21 of the winding machine 1. As can be seen, the control station 5 has a reading device 27 arranged below a conveyor belt 11 of the cop feed line 21, which, like the camera 10, also has the machine control is connected. With this reading device 27, the electronic storage media 16 of the incoming transport plates 8, each loaded with a cop 3, are checked. The information stored in the storage medium 16 of the transport plate 8 provides information about what color the bobbin tube 7 of the cop 3 delivered on the transport plate 8 must have. The camera 10, which is equipped with an image processing device 9, is aligned with a frame 17 arranged beyond the cop feed path 21, which is equipped with a reflection film 31 on the back. Reference bobbins 28, 29, 30 are positioned in the frame 17, which indicate which color a bobbin tube 7 must have in order to be able to be rewound in one of the winding sections 20A, 20B or 20C of the winding machine 1 to form a cheese of a specific yarn lot.

The reference sleeves 28, 29, 30 are arranged in the frame 17 in such a way that the upper tip of the sleeve points downwards and approximately a quarter of the coil sleeve 7 can be captured by the camera 10, to compare the sleeve tips with each other. The camera 10 and the frame 17 are arranged in such a way that when the camera 10 creates a recording 15 of a delivered cop 3, on the recording 15 the bobbin sleeve 7 of the incoming cop 3 and the reference coils 28, 29, 30 are visible . The image processing device 9 of the camera 10 then checks whether the color of the bobbin tube 7 of the delivered cop 3 matches the color information stored on the storage medium 16 of the associated transport plate 8 and whether the color of the bobbin tube 7 corresponds to one of the colors of the reference tubes 28, 29 or 30 . In addition, in the image processing device 9, the thickness of the sleeve tip of the coil sleeve 7 on the transport plate 8 can be compared with the thickness of the sleeve tip of the reference coils 28, 29, 30.

The Fig. 3 shows schematically a recording 15 of the camera 10 equipped with an image processing device 9 and arranged in the control station 5. As can be seen, the upper half of the recording 15 shows the different colored reference coils 28, 29, 30, while in the lower half of the picture, among other things, the coil sleeve 7 of the delivered cop 3 is visible.

Function of the method according to the invention:

With a multi-lot system according to the present exemplary embodiment, cross-bobbins of several different yarn lots can be produced at the same time if necessary. For the sake of clarity, a multi-lot system is described in this exemplary embodiment, which produces three different yarn lots.

In such a case, cops 3 are manufactured on the spinning stations 18 of the ring spinning machine 4A, which are wound, for example, with a batch of yarn X and from which cheeses of a batch of yarn A are to be created. The cops 3 with the yarn lot X are identified, for example, by red bobbin tubes 7.

When the spinning stations 18 of the ring spinning machine 4A have completed the cops with the yarn lot

The transport plates 8 are each equipped with an electronic storage medium 16, into which writing devices 19, preferably one at each end Row of spinning stations of the ring spinning machine 4A are arranged, it is entered which color the bobbin tube 7 of the cop 3 brought up on the respective transport plate 8 must have.

Accordingly, for example, cops 3 are manufactured on the ring spinning machine 4B, which are wound with a yarn batch Y, and cops 3, which have a yarn batch Z, are produced on the ring spinning machine 4C. The bobbin tubes 7 of the bobbins 3, which are wound with the yarn section Y, are then, for example, green, while the bobbins 3, which have the yarn section Z, are identified by blue bobbin tubes 7. As with the ring spinning machine 4A, the electronic storage media 16 of the transport plates 8 in the ring spinning machines 4B and 4C are also described by writing devices 19, which are each arranged at the ends of the rows of spinning stations of the ring spinning machines 4B and 4C A, in such a way that they can be clearly recognized at any time if necessary , which color the bobbin tube 7 of the cop 3 brought to the respective transport plate 8 must have.

The finished cops 3 are transported on the transport plates 8 via the bobbin and tube transport system 14 to the winding machine 1 and reach a control station 5 arranged in the entrance area 13 of the winding machine 1 in the area of the cop feed line 21. The control station 5 has a control station 5 arranged below a conveyor belt 11 Reading device 27, which records the information contained on the electronic storage medium 16 of the incoming transport plate 8 regarding the "must" color of the bobbin tube 7 of the cop 3 delivered on the transport plate 8.

At the same time or immediately afterwards, the camera 10 equipped with an image processing device 9 creates a recording 15 and checks whether the color of the bobbin tube 7 of the cop 3 delivered on the transport plate 8 matches the color information on the storage medium 16 of the associated transport plate 8. Furthermore, a color comparison is carried out with the reference bobbins 28, 29, 30 held in a frame 17, which consist of a red bobbin tube 7 for the yarn lot X, a green bobbin tube 7 for the yarn lot Y and a blue bobbin tube 7 for the yarn lot Z . If it is determined that there are inconsistencies regarding the color of the bobbin tube 7 and the color information on the storage medium, or that the color of the bobbin tube 7 does not match one of the colors of the reference tubes 28, 29, 30, this is noted in the storage medium 16 of the transport plate 8 and the transport plate 8 in question with its attached, dubious cop 3 is taken as quickly as possible to a device 12, which in this example is called Manual preparation section of the winding machine 1 is formed, discharged. In this example, the cops 3 are manually removed from the transport plates 8, so that cops 3 that are assessed as defective can be removed from the material flow.

Cops 3, which prove to be correct during this monitoring by the control station 5, are each transferred to the relevant winding section 20A, 20B or 20C of the winding machine 1 and wound onto a cross-wound bobbin at one of the work stations 2 of this winding section. This means that in the case of cops 3, which are wound, for example, with the yarn lot the cop 3 is passed into the winding section 20A of the winding machine 1.

Correspondingly, cops 3, which are wound with the yarn lot Y, have green bobbin tubes 7 and are rewound into cross-wound bobbins of a yarn lot B, are guided into the winding section 20B by actuating the corresponding electromagnetic switch 26 and there on one of the work stations 2 onto a cross-wound bobbin of the yarn lot B wound up.

The same procedure applies to cops 3, which are wound with yarn section Z and are equipped with blue bobbin tubes 7. Such cops 3 are transferred into the winding section 20C of the winding machine 1 by appropriate actuation of an electromagnet switch 26 and rewound at one of the work stations of this winding section 20C. This means that cops 3 with a yarn lot Z and blue bobbin tubes 7 are wound onto a cross-wound bobbin of yarn lot C in the winding section 20C.

Reference symbol list

1

Dishwasher

2

place of work

3

Cops

4

Ring spinning machine

5

Control station

6

ferromagnetic ring

7

Coil sleeve

8th

Transport plate

9

Image processing device

10

camera

11

Conveyor belt

12

Furnishings

13

Entrance area

14

Coil and tube transport system

15

Recording

16

storage medium

17

frame

18

Spinning station

19

Writing facility

20

Winding section

21

Cop feed line

22

connecting route

23

storage route

24

Cross transport route

25

Sleeve return path

26

Soft

27

Reading facility

28

First reference coil

29

Second reference coil

30

Third reference coil

31

Reflective film

32

Polarizing filter

Claims (8)

Method for operating a winding machine (1), which has a large number of work stations (2), on which cops (3), which were created on ring spinning machines (4) upstream in the production process and which have relatively little yarn material, are rewound into large-volume cheeses, wherein the work stations (2) of the winding machine (1), in order to be able to process a plurality of different yarn lots at the same time, are divided into different winding sections (20) and the cops (3), depending on the yarn lot they have, are characterized by the color of their bobbin tubes ( 7) are identified, characterized, that the transport plates (8) of the delivered cops (3), which each include a storage medium (16) containing information, from which it can be seen which color the bobbin tube (7) of the cop (3) located on the transport plate (8) must have , can be read out, in that a recording (15) is created by means of a camera (10) having an image processing device (9), which shows the bobbin tube (7) of the cops (3) brought up on the transport plate (8) and several reference tubes (28, 29, 30). and that the image processing device (9) checks whether the color of the bobbin tube (7) of the cops (3) brought to the transport plate (8) corresponds to the color information stored on the transport plate (8) and whether the color of the delivered bobbin tube (7) corresponds to the Color of one of the reference sleeves (28, 29, 30) provided matches. Method according to claim 1, characterized in that if the image processing device (9) of the camera (10) determines that the color of the bobbin tube (7) of the cops (3) brought up on the transport plate (8) does not match that on the transport plate (8 ) stored color information or does not correspond to the color of one of the reference sleeves (28, 29, 30), this is recorded as information on the transport plate (8) of the delivered cops (3) and the relevant cops (3) are subsequently transferred to a device (12 ) of the winding machine (1). Device for carrying out the method described in claim 1 for operating a winding machine (1) which has a plurality of work stations (2) on which cops (3) can be wound into cross-wound bobbins, the work stations (2) of the winding machine (1), around a number of different yarn lots at the same time to be able to process, are divided into different winding sections (20) and the cops (3) created on ring spinning machines (4) upstream in the production process are identified according to their yarn section by the color of their bobbin tubes (7),
characterized,
that a control station (5) is installed in the entrance area (13) of the winding and empty tube transport system (14) of the winding machine (1), which checks each transport plate (8) of an incoming cop (3) to see whether it is stored in an electronic storage medium (16 ) of the transport plate (8) contained statement about the color of the bobbin tube (7) of the delivered cop (3) matches the color of the present bobbin tube (7) and with one of the colors of the reference tubes (28, 29, 30) kept ready. Device according to claim 3, characterized in that the control station (5) has a reading device (27), a camera (10) equipped with an image processing device (9) and a frame (17) for attaching a plurality of reference sleeves (28, 29, 30). . Device according to claim 4, characterized in that the color of the reference tubes (28, 29, 30) fastened in the frame (17) each corresponds to the color of one of the bobbin tubes (7) through which the cops (3) to be processed correspond to the yarn lot, which they have are marked. Device according to one of the preceding claims, characterized in that the camera (10) installed in the entrance area (13) of the winding and empty tube transport system (14) of the winding machine (1) and equipped with an image processing device (9) and the frame (17) for Fastening the reference sleeves (28, 29, 30) are positioned in such a way that a recording (15) can be created by the camera (10), which at least partially shows both the bobbin sleeve (7) of the cop (3.) delivered on a transport plate (8). ) as well as the reference sleeves (28, 29, 30) held in the frame (17). Device according to one of the preceding claims, characterized in that the camera (10) equipped with an image processing device (9) is designed in such a way that it can be determined immediately whether there is a difference between the color of the bobbin tube (7) of a delivered cop (3) and in the storage medium (16) of a transport plate (8) color information contained therein and/or whether there are discrepancies between the color of the bobbin tube (7) of a delivered cop (3) and the colors of the reference tube (28, 29, 30) arranged in the frame (17). Device according to one of the preceding claims, characterized in that the camera (10) is designed as a vision sensor.

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