DE19825911A1 - Bobbin identification during automatic bobbin changing on winding machine - Google Patents

Abstract

When a bobbin (4) is doffed by an automatic bobbin changer (1) it is placed on a conveyor (2) and taken to a loading station (A) where it is transferred on to an intermittent collecting conveyor (3). The bobbin sequence data is stored so that when a bobbin is removed at the unloading station for examination, the machine position on which it was produced can be identified. An Independent claim is also included for an arrangement where the automatic bobbin changer carries the bobbin to the loading station (A) and the conveyor (2) is omitted.

Description

The invention relates to a method for changing bobbins on a package winding machine ne, in which a finished package with the help of a bobbin changer from ih rer winding station removed and moved to a storage space on a storage path leads and with which is registered for the package, from which winding station it is coming. The term "bobbin" stands for everyone in the textile industry when weaving, Knitting, knitting, etc. directly used bobbin when it is on a certain exact winding arrives. Such coils are produced on automatic winding machines.

On conventional automatic winder, in particular cross-winder, takes one automatic bobbin changer the finished cheese at its winding position and puts them on one at all winding positions of the machine or at all winding positions storage path leading past one side of the machine. The latter is generally designed as a storage belt; but other means of transport, e.g. B. Auxiliary vehicles are provided. In the course of time, every winding unit has - or too at least most bobbins have delivered a package. Before going to egg ner winding unit a second package is finished, the filing path must be cleared so that there are no collisions on the storage path.

When clearing, the packages are often subjected to an optical quality control educated. There are optically recognizable faults on the coils, e.g. B. Yarn over springer, the lack of thread reserve, dirty bobbins, from the bobbin hanging thread ends etc. Faulty bobbins can be found in the following  Processing stages, especially in weaving and in the knitting or knitting clean, very expensive machine downtimes and / or quality errors. Therefore defective bobbins are often eliminated on the winding machine and - if possible - rewound. If coil faults of the same kind are common, can it may be that the same winding unit always makes the same mistake. It is there of interest to know which winding unit is working incorrectly.

Most textile companies bring their packages, e.g. B. by means of a trolley, Gate wagons or via transport systems, in a central packing plant, where the coils checked and packaged. In such a case, the examiner can review the respective only assign the cheese that he controls to a specific winding unit, if the coil itself is marked accordingly. A ge A suitable signing method is described in DE 41 14 429 A1. In the known each finished bobbin with the help of the bobbin changer directly on your Place the winding unit on a collecting belt so that when clearing the collecting belt which is to be deduced from the band position of the individual spool, of which Winding unit the cheese comes. It is possible in this way to hold each coil Clearing the data of their origin from a certain winding unit to signie Ren. In practice, the necessary signing devices have to be proved complex, so that the known method for this reason alone found no entry into practice.

However, the method known from the aforementioned DE 41 14 429 A1 still has an egg Another major disadvantage: Since the individual winding units are different work quickly and often not all bobbins have delivered a finished package If one of the winding units has already finished the second bobbin, this is after the known methods to be cleared collection volume only partially filled. A denser coverage of the tape, e.g. B. placing on a gap between two spools ask, but is not possible according to the known procedure, because then for the marking device at the tape exit from the position of the spool on the tape it is no longer possible to conclude with certainty from which winding unit the individual Cheese comes. The clearing of an only partially filled anthology is economically often not worthwhile.

The invention has for its object to provide means by which it ge succeeds, for everyone at the clearing point also as a collection with close to each other lying cross bobbins trained collecting tape incoming bobbin indicate from which winding unit this bobbin was produced. The assignment of the winding unit and bobbin should be a signature on the bobbin and accordingly do not require a special marking device. The coils are supposed to be on the Anthology can lie in the order in which they are spooled changer from the individual winding units.

A first solution according to the invention exists for the method specified at the beginning ren that all packages with the help of the bobbin changer on the filing line brought and with their help individually at the same storage location A one after each bobbin placement by at least one bobbin division in one Clock direction further clocked anthology are promoted and that one Bobbin, which delivered the respective package, is registered, so he averaged data in the order of on the anthology at the filing point stored packages are saved and this data when clearing the Collection tape and checking the packages at a clearing point in the row order of the incoming packages can be made available. The Abla Racks can also be referred to as a drop-off point or transfer point.

The storage path is preferably designed as a storage belt. But it is also within the scope of the invention, auxiliary vehicles for taking over the coils from the Use changer. The auxiliary vehicles may transport individual ones Coils to storage location A. Only to simplify the description is in following the term "storage belt" used for each type of storage section. That he Collection belt according to the invention is also referred to as a conveyor belt or as Coil buffer used. The term "coil division" is used in the longitudinal direction dimension of a coil measured on the collecting belt - if necessary, addition a tolerance excluding mutual damage to the coils - Understood.  

The storage belt can be used continuously or each time within the scope of the invention Cheese is placed (until it is delivered to the storage location), run around always bring exactly one package to the storage location. There is the cheese transferred to the anthology. The anthology can be Feeds can also be called a timing belt. The storage belt can in principle as well as the anthology. At the end of the conveyor belt This is the spatially fixed one - also as an acceptance point or transfer point to be designated - depository.

The collecting belt can for example be placed next to or below the storage belt be classified. The collection belt is located next to or behind the storage belt (i.e. between the conveyor belt and the main part of the machine), is on the rack put the cross bobbin each shifted. Then the anthology is clocked in the opposite direction to the storage belt spool by spool (each by the specified bobbin division) until it is ready for clearing is filled.

The detection of the position of the respective winding unit, which a cross-wound bobbin has finished, among other things, with the help of the bobbin changer, which is "working place "is done. Further details and alternatives are given below explained.

The use of this first solution of the problem on which the invention is based brings among other things the following advantages:

• - Existing bobbin changers can be changed without having to convert them be used;
• - Even with short cross-winding times (e.g. with dye bobbins and doubles wire spools, especially in connection with the processing of coarse Yarn numbers), a single bobbin changer is enough to operate a lot number of winding units or spindles;
• - It is possible to use two or more bobbin changers per machine.

A second solution according to the invention exists for the Ver drive in that all cross-wound bobbins individually with the help of the bobbin changer Lich one and the same place on one after each bobbin rack by at least a coil division filed in a clock direction clocked collection tape and that the winding unit, which delivered the respective package, in particular with the help of the bobbin changer, the data determined in this way is registered the order of the packages on the collecting tape and this then when clearing the anthology and checking the cross coils available in the order of the incoming packages become. The collection belt is both a storage and a conveyor belt.

The bobbin changer then takes a cross completed at a bobbin wind up and do not put them directly on the filing unit on a filing line, but always brings the coil to a specific, fixed storage location and the same anthology, which after each package has been deposited by preferably two exactly one coil division - in the clock direction - is continued to - on the fixed storage location - space for the next package create.

The clock direction of the collecting belt should preferably be between the bobbin transport the respective winding station and the one filing or transfer point be judged. In this way, the packages arrive - just like the first one Solution - in the order in which they are removed from the respective current winding unit, that is to say in the sequence first-in / first-out, can be removed onto the Anthology. If you forego the first-in / first-out sequence, the Sam melband at least when clearing in the same direction as the coil transport be moved from winding station to storage station.

The bobbins can also be placed close together on the collecting belt, so that each time this anthology has to be cleared, an economy sufficiently large clearing is available. To achieve this result With the second solution, a single anthology is sufficient; separate storage benches the or the like means of transport (between winding and depositing point) are unnecessary  appropriate space on the machine is not required. It is only to ensure that the bobbin changer genom each from a winding unit not handing over the bobbin directly to the winding unit (to a deposit point), son always takes you to one fixed storage location.

For the transfer at the one spatially fixed position and the respective In any case, the clocking of the collecting tape by one coil division should be continued according to another invention, that come with each bobbin changing process it is registered and saved which winding unit the individual cheese bobbin produces has put. This data is stored - preferably above the coils changer - in the order in which the packages (at the storage place) on the Arrive anthology yourself. Therefore, the data when collecting band (approximately) is filled and cleared, in the same order in which the bobbins arrive at the clearing place (of the collection tape) can be called up.

Deliver the winding unit, which has a package in the specified manner, delivered or delivered, he can re within the scope of the invention in very different ways be registered. For example, the bobbin changer and / or the bobbin place sensors are assigned that give the signal when a coil is removed and tell an associated data store from which winding unit the respective coil comes. Limit switches, light barriers, lasers come as sensors measuring devices, pulse counters, angular momentum encoders etc. in question. It can e.g. B. the place the winding unit or that of the changer or the exchanged spool (for storage place A) distance traveled can be measured. This grasping and given if the data is saved, i.e. the location or the number of the respective deliver the winding unit - ie the winding unit identifier - is preferably carried out automatically, so that the data in question automatically and in the correct order for Are available when the single spool is cleared from the collecting belt and be should be judged. In any case, it may be convenient to display the data in a display and / or keep the input device ready at the clearing area.

The controller who receives the coil at the clearing station and an opti undergoes a test, can be fixed on an input or display device by him  Enter the errors so that they ultimately fed to that individual winding unit that the tested coil produced. Typical mistakes can be typed into corresponding separate input channels. In principle it is not at all necessary that the controller knows from which winding unit the coil that he just checked is coming. The controller only needs that of he identified as defective from the main lot of proper coils for further processing, especially for rewinding directly on the gera sort out the machine being looked after and insert the error in the correct channel give. Depending on the design, it can also be cheap, even for any order Enter an appropriate assessment according to the wound coil.

A major advantage of the method according to the invention is that oh ne mechanical signature and with minimal technical and spatial opening if the collection or clearing belt was packed tightly, order of winding unit and bobbin is possible and at the same time determined whether any winding unit often makes the same mistake. For this, the from the Kon error entries carried out for statistical purposes are saved and after Required in batches to find recurring errors per machine or spool find out. This can, for example, provide information about setting errors found or causes of wear can be determined. If a winding unit in particular who makes a lot of mistakes, it can be repaired or replaced. To this In this way, the number of incorrectly produced cross-wound bobbins can be reduced. It will understandable from the following example:

Assuming a production quantity of 1,000 kg of yarn per hour, 2% of the bobbins produced is faulty, i.e. 2% of the production has to be reversed be spooled. When the respective company works 8,000 hours a year To rewind 160,000 kg of yarn. Are by the error analysis according to the invention often or regularly, incorrectly working winding units can be registered and repaired based on practical experience with a 50% reduction in coils errors are to be expected, in the above example this means that only 80,000 kg of yarn have to be wound. Approximately 60,000 to 80,000 DM saved per year, and - not to forget - it becomes 80,000 kg of yarn  additionally produced in first quality. Coiled reels can often due to the higher yarn stress - only of a lower quality become.

Using the attached principle drawings, some details of the Erfin explained. Show it:

Figures 1a and b two alternative embodiments of bobbin changers with finished bobbin transport an automatic cheese machine.

Fig. 2a - c stages during the filling of the collector of FIG. 1;

Fig. 3a - c work of the bobbin changer when removing and removing animals from bobbins at different winding positions; and

Fig. 4 is a display and input device for the coil quality control.

In the drawing of Fig. 1a, a total of 1 designated bobbin changer, a storage belt 2 and a collecting belt 3 are shown, which can be positioned on a longitudinal side of a winding machine, not shown, with the bobbins arranged side by side in the longitudinal direction of the belts 2 , 3 . The two (driven) tapes 2 , 3 can be at a distance D (D should be larger than a coil diameter) one above the other. The bobbin changer 1 can place a bobbin 4 completed at a bobbin on a pair of support rods 5 (only one of the support rods can be seen in the drawing).

When the bobbin changer 1 has taken out a bobbin 4 from a bobbin, it deposits it directly on the deposit belt 2 according to FIG . This moves the spool 4 on the winding machine in the direction of arrow 6 to a spatially fixed storage point A at the longitudinal end 7 of the storage belt 2nd

At storage point A, the spool 4 is removed from the storage belt 2 with the aid of a gripper 8 and in the direction of arrow 9 to the collecting belt 2 , for. B. brought to its longitudinal end 10 . The collecting belt 2 then clocks in its feed direction 11 (opposite to the transport direction 6 of the storage belt 2 ) by a bobbin division. The rest of the transport is explained below with reference to FIGS. 2 ff.

In the drawing according to FIG. 1b, a coil changer denoted overall by 1 and a collecting belt 3 — that is, without the storage belt 2 according to FIG. 1a — are provided. The bobbin changer 1 can put a changed bobbin back on the support rods 5 . These should be attached at a height significantly larger than the coil diameter D above the collecting belt 3 . If the bobbin changer 1 has taken up a bobbin 4 on its supporting rods 5 , it travels according to FIG. 1b itself on the winding machine in the direction of arrow 6 to the spatially fixed storage point A. The bobbin changer 1 may lie on its transport path lying bobbins that have reported full packages, do not use them immediately but only on their way back (one after the other). At the storage point A comes in the exemplary embodiment, a fork 12 arranged above the collecting belt 3 is driven upwards to the coil 4 , the coil 4 is raised somewhat from the changer parking space (supporting rods 5 ) and sets the cross-wound bobbin 4 after the bobbin changer 1 has reached its reverse position or has left the storage point A (against the direction 6 ) on the collecting belt 3 . These temporally successive steps are shown in Fig. 1b.

Fig. 2 shows the sequence of steps in filling the collecting belt 3 with coils 4 in the phases a, b and c shown. In the final state shown in FIG. 2c, the collecting belt 3 - tightly filled with cross-wound bobbins 4 - is ready for clearing. The filling in the shown dense coil division with the tolerance also visible in the drawing is achieved in the embodiment in that, for. B. with the help of a light barrier, is registered when the storage point A is occupied by another coil 4 . Thereupon, the command is given by a controller connected downstream of the light barrier to advance the collecting belt 3 by a coil division in the trans port direction 11 . The step size of the relaying is expediently predetermined in accordance with the extent of the individual coil 4 measured in the longitudinal direction of the collecting belt 3 . In this way, depending on the bobbin dimension measured in the transport direction 11, approximately twice as many cross-wound bobbins can be accommodated on the collecting belt 3 as the respective machine has bobbins. In the case of a winding machine with 26 winding positions, these are 52 stored bobbins until the first bobbin has reached the clearing position at the clearing end 13 and the clearing process is to be initiated.

Referring to Figures 3a to c. Explains how according to the invention (opposite to the deposition point A) for each Mende on Abräu 13 of the collector 3 ankom Mende cheese 4 to register in advance and is to be stored, from which Reel it with comes, that is, as the on the tape 3 stored and buffered bobbins with respect to their origin from a specific winding position who can identify.

In principle, the following applies according to the invention according to FIG. 1: The bobbin changer 1 takes up a cheese 4 that has been reported as ready, places it on the storage belt 2 or transports it directly to the spatially fixed point A of a belt 3 . For example, from the position reached here or from the path of the bobbin changer 1 covered in the process, a measured variable for detecting and storing the bobbin being operated can be obtained and entered into a data memory without any registration being made on the bobbin itself.

In the exemplary embodiment for bobbin buffering or storage on an automatic winder explained with reference to FIG. 1b, the bobbin changer 1 is then given the task, for example, of counting the number of passed bobbin positions until the reversal point or deposit point A is reached. The measurement of the distance covered can preferably also be carried out with an angular momentum generator, e.g. B. counts 100 pulses per pas-based winding unit. Other methods of detecting the winding unit currently delivering, e.g. B. limit switch at the winding unit itself are also within the scope of the invention. If possible, the measurement should be made contactless so that wear is avoided.

In the embodiment indicated with reference to FIGS . 3a to c, it is assumed that the winding machine has 26 winding stations and that according to FIG. 3a the cross-wound bobbin at the winding station No. 16 is to be changed. The bobbin changer 1 then moves to the winding station No. 16, charges the finished bobbin located there and initiates its transport to the storage point A. The bobbin changer 1 determines, for. B. on his route to his reversal point (filing point A), the winding stations passed by him and registered the number 16. The spool originating from the 16th winding station is placed on the collecting belt 3 , this is then moved by a bobbin division in the opposite direction previous coil transport direction 6 tetetak tet.

If the bobbin changer 1 is then informed that the bobbin is to be changed at the 10th winding position, the bobbin changer 1 travels there, lifts the bobbin onto its supporting rods 5 and ensures that they are transported to the same storage point A as before. This spool is also placed on the collecting belt 3 , and the latter is then clocked by a spool division. The procedure is very similar when winding unit No. 22 reports a full bobbin. After the corresponding transport of the bobbin in question and the deposit on the collecting belt 3 at the storage point A, there are already three bobbins that come from the winding units No. 16, 10 and 22 on the collecting belt 3 .

When the collecting tape 3 is finally completely or sufficiently filled ( Fig. 2c), the bobbins are cleared of this tape. It can be seen at the clearing place at the clearing end 13 , visible for the clearing and controlling person, in the display 14 , from which winding unit number ( FIG. 4) the cheese that has just been removed comes. In the first bobbin in Fig. 3c (left), "Bobbin No. 16" would be shown in the display. In the second spool "winding unit No. 10" and in the third coil "winding unit No. 22" etc. The clearing and checking person checks each individual spool and provides z. B. on the third bobbin (winding unit No. 22) a missing reserve thread. It registers in the input device 15 shown in FIG. 4 the first symbol in the second row of the displayed coil faults, e.g. B. "Missing reserve thread". This error information can be saved for static purposes and called up in batches as required to find out recurring errors per machine, in particular related to one or more specific winding units.

The winding station identification according to the invention, which can advantageously be combined with the tight packing of the bobbins on the collecting belt, has the following advantages, among others:

• a) Recurring errors at individual winding units are identified covers.
• b) The mechanic receives specific information on troubleshooting, since not only the number, but also the type of error can be registered; the error input device according to Fig. 4, for example, has input keys for ten different types of errors.
• c) With the identification of the errors you get a total overview of the incorrectly working winding units of each machine, via setting errors, Adjustment changes and wear effects of special functions building blocks.
• d) Aware of the relationships between the occurrence of errors and the Eliminating errors saves time-consuming rewinding.
• e) Coils identified as defective can (since the coils are located directly on the delivering machine is checked) directly and without additional trans port routes are rewound on the supplying winding machine; the so far Frequently accepted back and forth transport to the packing room (if only is checked there).
• f) When you change lots you get quickly - even with the first delivered coils - information on whether in the manufacture of Quality bobbins correctly selected the settings of the winder etc. were.

A method for changing bobbins on a cheese winder is described ben, with the completed bobbins exchanged with the help of a bobbin changer become. In order to accommodate as many spools as possible on a collecting tape and for each spool to register the origin of a particular winding position, each will Cheese through the bobbin changer directly or spatially one and the same ben handover point presented in an anthology. This is after each reel  storage clocked by a coil division. The package delivering the package is registered and the data determined in this way are displayed in the order of the bobbins stored in the collection. This data is used by Clearing the anthology kept ready for the controlling person.

Reference list

1

Spool changer

2nd

Storage belt

3rd

Anthology

4th

Cheese

5

Support rods

6

Arrow direction (

2nd

)

7

Longitudinal end (

2nd

)

8th

Fork (

Fig.

1

a)

9

Translation direction

10th

Longitudinal end (

3rd

)

11

Direction of transport

12th

Fork (

Fig.

1

b)

13

Clearing (

3rd

)

14

Display

15

Input device

Claims (5)

1.Procedure for changing bobbins on a package winding machine, in which a finished package ( 4 ) is removed from its winding station with the aid of a bobbin changer ( 1 ) and is fed to a storage place on a storage path and in which the winding unit is registered from which winding position it comes from , characterized in that all cross-wound bobbins ( 4 ) are brought onto the storage path ( 2 ) with the aid of the bobbin changer ( 1 ) and with the aid of them individually at one and the same storage location (A) one after each bobbin storage by one bobbin division in a clock direction ( 11 ) promoted collecting tape ( 3 ) are promoted and that the winding unit that has delivered the respective cross-wound bobbin ( 4 ) is registered, the data determined in this way are stored in the order of the bobbins ( 4 ) stored on the collecting belt ( 3 ) at the storage location and this data when clearing the collecting belt ( 3 ) and checking the packages on a clearing m point ( 13 ) can be made available in the order of the incoming packages. 2.Procedure for changing bobbins on a package winding machine, in which a finished package ( 4 ) is removed from its winding station with the aid of a bobbin changer ( 1 ) and is fed to a storage place on a storage path and in which the winding unit is registered from which winding position it comes from , characterized in that all cross-wound bobbins ( 4 ) with the help of the bobbin changer ( 1 ) individually one and the same storage location (A) on a after each bobbin storage by a bobbin division in a clock direction ( 11 ) clocked collecting tape ( 3 ) and that the winding unit that delivered the respective cross-wound bobbin ( 4 ) is registered, the data determined in this way are stored in the order of the cross-wound bobbins ( 4 ) stored on the collecting belt ( 3 ) and this data when the collecting belt ( 3 ) and checking the packages at a clearing point ( 13 ) in the order of the incoming package len be made available. 3. A device for performing the method according to claim 1 or 2, characterized in that the spool changer ( 1 ) is assigned a rotary pulse generator for registering the winding station being operated. 4. A device for performing the method according to claim 1 or 1, characterized in that at the storage location (A) opposite clearing point ( 13 ) of the Sam melbandes ( 3 ) in the viewing and grip area of the cross-wound bobbins ( 4 ) in order clearing and testing person a display and input device ( 15 ) with error input keys for assigning detected errors to a specific spool position number is provided. 5. Device according to claim 4, characterized in that the clock device (11) of the collector (3) the coil is directed opposite the transport between the winding units and the one depositing point (1).