DE3812045A1 - Method for controlling a warping machine and warping machine for implementing the method - Google Patents

Abstract

A warping carriage (10) is displaced in accordance with the increasing lap thickness with respect to the warping drum (1). In the case of the first warp layer (26a), a prescribed forward movement of the warping carriage first warps a base lap (27) and then a measuring lap (28). The measurements obtained from the measuring lap (28) are used by a processor (31) to determine an adjusted forward movement of the warping carriage (10) for the rest of the lap (29). The subsequent layers (26b, 26c etc.) are copied from the first warp layer (26a). Warp data obtained when the data is input and/or from the adjusted forward movement, the free lap capacity and the already wound warp thread length of the base and measuring laps are used to calculate a maximum warp length and for purposes of comparison with a desired warp length which has been input. If the desired warp length exceeds the maximum warp length, the warping machine is stopped. A squeezer roll (22) can be provided, the effect of which can either be detected as early as the measuring phase or can be taken account of by the input of an assigned adjustment factor for the forward movement. <IMAGE>

Description

The invention relates to a method for controlling a Warping machine according to the preamble of claim 1.

The invention further relates to a warping machine for through management of the process according to the preamble of the An Proverbs 8

The problem with warping is that the successive, side by side on the warping warp to be wound to be uniformly sharpened in order to be as uniform as possible Obtain winding, because only perfectly warped chains allow a clean tree and then a mistake free processing of the chain on a weaving machine.

DE-PS 10 87 087 is a device for setting len a cone warping machine known, with the measured values u.a. to determine the maximum absorption capacity, i.e. the maximum possible warp length can be obtained. This well-known Device consists of an application measuring device in which a string of threads in a rectangular groove of a motor driven wheel is wound until the warp threads sensing sensor stops the motor when the groove is full. The number of wheel revolutions becomes the displacement of the warper blade with the cone unchanged  extrapolated. However, since here the winding is not under If warping conditions occur, the winding structure of the belt can in the groove of the wheel is not the same as building a band to be on a cone drum. As a result basically errors when winding up the first warp on the warping drum and accordingly also when winding the Subsequent tapes.

The CH-PS 6 06 545 relates to a device for controlling the Band order during warping. This publication addresses deal with the desire of practice to have the greatest possible warp lengths in a warping process and then on one Wrap warp beam. Here, the winding diameter big on the warping drum and there is due to various confounding factors, the risk that the tape application and thus the warp length from tape to tape become different so that no correct warp beam can be wound more and material waste arises. It is therefore of primary importance to sharpen in such a way that all warp belts have the same order size and practically that have the same warp length. The thickness of the warp is included depending on the thread number, the total number of threads, the Warp width and a correction factor, which is all textile technical data, thread tension and thread speed taken into account. With the help of this correction factor and the current measurement of the warping drum revolutions a theoretical target warp length is continuously compared. In addition, the actual warp length is continuously measured and  compared to the target warp length. As soon as deviations occur, is corrected by changing the thread tension intervened greedily. The thread tension is changing but not beneficial. It would be better to use the correction factor to compensate for the deviations. Because of this Correction factor can only be determined approximately, there are significant problems in generating correct ones Wrap.

In the method known from DE-OS 34 32 276 for Controlling the warping carriage of a warping machine the movements of the warping carriage carrying the warping blade the warping machine for warping a roll of several, successive, side by side on the warping drum wound warp bands using a warp sled drive controlling processor after this program entered. When skewing the first The process takes place at the beginning of a measuring phase the skewer movements due to the processor entered data for the warping of individual belts. While this measurement phase, a difference measurement is made between the corresponding winding and the one stored in the processor Target state and an evaluation of this comparison. At the At the end of this measurement phase, a correction will be made if necessary ture of the warping slide position and in the processor for the Skidding carriage movement saved program from this Measurement phase. The belt is then fully warmed and this results in the warping of all subsequent belts of the carriage movements corresponding to that  taken over during the warping of the entire first volume. By this known method is essentially about all tapes of the same winding on the warping drum of the warp machine received, i.e. those following the first volume other bands will be among themselves and the same as the first Band warmed up because the order is also being built up in the area the measurement phase of the first tape for all subsequent tapes returns. But it has been shown that this too Process not yet fully satisfactory leads. It was found that the hard warping drum Document and other factors at the beginning of the warping of the Tape the measurement result of the intended at the beginning of the warping Measurement phase influenced to a significant extent. The measuring organ has a sensing roller that is under pressure on the reel rests, so that the risk of sensitive threads stands that the threads are damaged by the printing system will.

DE-PS 25 10 517 is a process for warping of threads from bobbins of a creel on a cone warp known machine that pulls the threads from the bobbins and wound in strips on a warping drum. The archipelago drum or support for a thread guide taking into account the cone angle and proportional of the winding thickness increasing during winding on the side shifted towards each other by the winding from a feeler roller scanned and a feed drive of the scanned winding thickness is applied accordingly. It will be  the entire first band is scanned by the sensing roller, the Adjustment path depending on the number of revolutions the warping drum is measured. When the others are warmed The feed drive is then corresponding to the belts adjustment distance measured when the first band was warmed the sensing roller. The sensing roller can at the same time be designed as a pressure roller, the on the thread contact pressure when warping the belts ent speaking the adjustment path of the feeler roller when the first volume is set.

DE-PS 26 31 573 is a process for warping of threads of bobbins of a creel on a cone warping machine known that basically the process corresponds to DE-PS 25 10 517 and also in the when the first volume is warmed, the entire first volume scanned or only a part of this band scanned becomes. When the rest of the first volume and the other belts are fed according to the previously measured mean value of the winding thickness increase. The feeler roller serves both when scanning and when Arching of the other strips or the remaining strip as a contact roller that when warping the other tapes accordingly the mean value previously measured during sampling men will.

In the method according to DE-PS 25 10 517 and DE-PS 26 31 573 there is the disadvantage that the winding  Structure of the first volume considerably different from that of the Subsequent tapes differ. Because at least in the process according to DE-PS 26 31 573 the feeler roller as a press roller is used in this process when warping very sensitive threads the risk of damaging the threads will.

In the known methods and warping machines explained above nowhere is the maximum possible warp length determined, which results from the measurement data so that it is not recognized can be determined whether the maximum possible warp length of the entered desired warp length deviates. But it is very important, the maximum possible warp length in time to determine in time for the warping correction rend can be interfered to the generation of incorrect Winding and thus the emergence of material scrap to avoid.

The object of the present invention is to improve a method according to the preamble of claim 1 in such a way that a maximum possible warp length with identical winding structure is obtained for all tapes and for all types of thread - when the press roller is delivered as well as when it is not delivered.

This task is carried out by the measures according to the indicator of claim 1 solved.  

The problem solution according to the invention already at the beginning of the warping, i.e. before the base warping wickels, and also in a very early warping phase, namely after warping the measuring roll, the winding behavior of the thread band, so that at this point the maximum possible warp length calculated and with the entered desired warp length can be compared can. The desired warp length is designed so that the warping drum can be filled to the maximum. Shows the comparison that the maximum possible warp length is smaller is than the desired warp length entered, so in this way intervened in the warping operation in good time and the warping machine is shut down. Then it can appropriate measures are taken to achieve that the desired warp length is less than or equal to that maximum possible warp length, for example, that it is wound with a suitable pressure. So it can very early on determining the maximum possible warp length a material scrap and a possible Damage to the warping machine can be prevented. It is so the danger is averted, the warping drum with more material to wrap than it can actually accommodate. The Base winding and the measuring winding require only a few warping drum revolutions, so that the corresponding material shot is negligible. The base wrap serves in the influence of the hard warping drum pad and other factors influencing the start of warping to prevent the measurement result obtained in the measurement phase.  If the winding takes place in the measuring phase without pressing, in the rest of the phase with pressing, however, the Feed roll determined according to one of the Correction of the known factor assigned to the pressure be as specified in claim 2.

If pressure is already being wound during the measuring phase, as stated in claim 3, the influence the pressure on the reel automatically by the knife result recorded so that for the remaining Measurement result automatically the correct winding structure, i.e. the correct feed for the warping slide is determined.

For better control of the warping operation, the next ones Education provided according to claims 6 and 7.

One for carrying out the method according to the invention suitable warping machine according to the type mentioned at the beginning is specified in claim 8.

Advantageous configurations of this warping machine are specified in the further dependent claims.

The invention is described below, for example, with reference to Drawing explained in more detail. It shows:

Fig. 1 shows schematically a plan view of part of a warping machine with a warping carriage arrangement, and

Fig. 2 and 3 are diagrams illustrating the relationships between the maximum possible warp length and the desired warp length.

Fig. 1 shows a warping drum 1 with a cylindrical part 2 and a warping cone 3.

The warping drum 1 is mounted in side plates 4 of a machine frame and is driven by a drive motor 5 . In the side plates 4 there is also a slide slide spindle 6 which is driven by a spindle drive 7 consisting of a drive connection 8 and a reduction gear 9 . The carriage displacement spindle 6 is operatively connected to a warping carriage 10 which carries the warping blade, not shown here.

If the carriage slide spindle 6 is rotated via the spindle drive 7 , then the warping carriage 10 moves on the one hand axially to the warping drum 1 in the direction of the arrow 11 and on the other hand also radially in the direction of the arrow 12 . In order to achieve this, the warping carriage 10 has a warping carriage support 13 and a warping table 14 . The warping carriage support 13 carries a nut 15, which is traversed by the carriage shifting spindle. 6 Thus, when the carriage shifting spindle is set in rotation 6, thereby displaces the warping carriage support 13 in direction of arrow 11 and simultaneously, the warping carriage support 13 also moves the warping table 14, which via a gear 16 with a fixedly arranged rack 17 meshes, via a drive connection 18 , a spindle 19 and a nut 20 is moved in the direction of arrow 12 .

The reduction gear 9 has the task of moving the warping table 14 in the direction of the arrow 12 in accordance with the material application or the winding increase on the cylindrical part 2 of the warping drum 1 so that by the selected reduction ratio between the slide displacement spindle del, nut 15 and rack 17 , gear 16 , Drive connection 18 , spindle 19 , nut 20 there is always the guarantee that the warping table 14 always makes a movement along the cone line 21 .

The warping table 14 carries an deliverable press roller 22 which supports the winding process and is held in a basic position by means of a pressure cylinder 23 .

Furthermore, the warping table 14 carries a feeler element, consisting of a feeler element 24 with a displacement sensor 25 .

The press roller 22 and the feeler 24 , 25 have the following tasks during the winding process:

The winding process of the first warping belt 26 a is divided into three winding phases, namely that of a base winding 27 , a measuring winding 28 and a residual winding 29 .

The base winding 27 is intended to be subject to the influence of the hard warping drum and to prevent other factors characterizing the beginning of the warping on the measurement result obtained in the measurement phase. After the base roll 27 , the feeler element 24 is adjusted, and after the measurement roll 28 , the exact application behavior of the material is determined by additional delivery of the feeler element 24 via the displacement transducer 25 with additional evaluation of the number of revolutions, for which purpose a rotation counter 30 is provided. With the aid of the measurement data, a processor 31 calculates a corrected feed and generates a corresponding control signal for the reduction gear 9 for warping the remaining winding 29 .

When the following tapes 26 b , 26 c etc. are warmed, there is no need to measure with the feeler 24 , 25 ; otherwise the warping process takes place for all subsequent belts with the same values as for the first belt 26 a , which is copied for all subsequent belts.

The press roll 22 is generally only delivered when the residual roll is warmed, because in many cases the exact behavior of the thread material to be wound is not known at the beginning of the winding process, so that it is expedient to close the measuring roll 28 without a press roll 22 work so that they do not lead to false measurement results.

On the other hand, the compression behavior of the Fadenma material under the action of a press roller with the various types of materials is known, so that for the winding of the remaining roll 29 with press roller, the reduction gear 9 can be corrected with an additional factor to take into account the influence of the delivered press roller 22 accordingly.

Practice has shown that warping is very sensitive threads a press roller must not be used, as this can damage the threads.

Since the press roll 22 is designed to be optionally deliverable, it is thus possible to optimally warp all fiber materials.

When working with the press roll, there are two operating modes, namely delivery of the press roll 22 already when the measuring roll is warmed or delivery of the press roll only when winding the remaining roll. If the measuring roll 28 is sharpened without the press roll 22 and is then to be further worked with the press roll, this is taken into account by a corresponding factor. This factor can be entered via a push button 32 of an input / display panel 33 of the processor 31 , which then calculates a correspondingly corrected feed for the warping slide. The processor 31 is a data carrier, data storage and control organ for the warping machine and determines data for warp production.

It is of course also possible to do this in the measurement phase with the press roller supplied. This has the advantage that the correct winding structure is already in the measuring phase is determined, which is suitable for working with press roller results without considering a corresponding factor needs to be.

Whether with a press roller or without a roller is significant for the maximum possible warp length, because when the press roller is delivered due to the increased material com pression a much longer warp length are generated can, as in warping without a press roller.

In order to optimize the efficiency of a warping machine, the aim in practice is to fill the warping drum 1 to the maximum. From this, a so-called desired warp length can be derived, which should be warmed.

Since the winding behavior of the warping material only after Termination of the measuring roll can be determined the risk that the maximum that can be derived from this (still) possible warp length exceeds the desired warp length and therefore cannot be warmed.

The processor 31 is therefore programmed so that it calculates the maximum possible warp length from the entered warp data and taking into account the measurement data from the measurement phase and compares it with the desired warp length.

The various warp data for the warping process are selected on the input / display panel 33 using selection keys 34 , defined by means of memory keys 35 , displayed in the display field 36 and entered via an input key 37 . As already mentioned, the pushbutton 32 can be used to determine whether work is carried out with or without a press roller 22 .

First, the processor 31 calculates the maximum possible warp length before starting the warping machine after entering the feed and warp length data and compares it with the desired warp length specified previously. If the calculated maximum possible warp length is greater than the desired warp length, this is indicated by a signal lamp 38 and the processor generates a stop signal which prevents the warping machine from starting. In addition, the maximum possible warp length is shown in the display 36 .

If the initially calculated maximum possible warp length is less than or equal to the desired warp length, the warping machine for warping the base winding and the measurement winding is started, and the calculation and comparison process is repeated after the end of the measurement phase. The processor 31 calculates from the by the feeler element 24, the displacement sensor 25 and the revolution counter 30 determined corrected feed the new maximum warp length and compares it with the entered desired warp length. If this new maximum possible warp length is less than or equal to the desired warp length, the warping machine is released for warping the remaining belt and the subsequent belts. However, if this new maximum possible warp length is greater than the desired warp length, signaling again takes place via the signal lamp 38 with simultaneous stopping of the warping machine. In addition, the maximum possible warp length is shown on the display 36 .

Of course, when calculating the maximum possible warp length, warping with or without a press roller is taken into account accordingly. The corresponding data entry and actuation of the press roller takes place, as already mentioned, by actuating the pushbutton 32 .

The maximum possible warp length calculated after the measurement phase results from the measurement data obtained in the measurement phase or the feed rate determined from this for the remaining roll and the free winding length, i.e. the still free Winding volume and that already for the basic winding and the warp length warmed chain length.

Under certain circumstances, the thread can be used when using the press roller tension can be reduced to reduce the risk of thread breaks to reduce.

Figs. 2 and 3 illustrate graphically examples of the deviation of the maximum possible length of warp length of the desired warp. The procedure can be seen from the example in FIG. 2 if the desired warp length that is to be shared has exceeded the maximum possible warp length and therefore cannot be brought onto the warping drum. In this case, the length of the desired warp length must be reduced to a value that is less than or at most equal to the specified maximum possible warp length. A correction has therefore become necessary after the measurement phase.

In contrast, in the example of FIG. 3, the maximum possible warp length is greater than the desired warp length. The latter can therefore be increased.

Claims (13)

1. A method for warping warp threads onto the warping drum of a warping machine with or without pressing, in which a warping carriage having a warping blade is shifted relative to the warping drum as a function of the winding thickness increasing when the individual warping bands are warmed, by using the first band with the warping a basic or basic winding and then a measuring winding are warmed in a given warping carriage feed, the winding application of the measuring winding being scanned by a feeler element and its adjustment path being measured as a function of the number of revolutions of the warping drum in the measuring phase, and then during Warping of the remaining roll of the first warping belt and after copying the base and the measuring roll when the subsequent belts are warmed, the advance of the warping slide during the warping of the remaining roll of the subsequent belts is corrected in accordance with the measured adjustment path, characterized in that from predetermined chain When entering data before the start of warping and / or from the corrected feed for the remaining lap, from the free lap length corresponding to the remaining lap as well as from the warp thread length already wound for the base and the measuring lap, a maximum possible warp length was determined and compared with a predetermined, desired warp length and that if the maximum possible warp length is exceeded by the desired warp length, a stop signal which stops the warping machine is generated. 2. The method according to claim 1, characterized in that when warping the measuring roll of the first warping belt without pressing and the rest of the first tape Pressing the feed of the warping carriage during warping this remaining roll and the remaining roll of the others Warping belts according to the winding with pressure assigned factor is corrected. 3. The method according to claim 1, characterized in that during the warping of the first warping belt the measuring roll and the remaining winding and also when the other warp is warmed tapes the corresponding winding parts with pressing be sharpened. 4. The method according to any one of claims 1 to 3, characterized characterized that the warping process during warping of the first warping belt after the final warping of the Base winding and the measuring winding for measuring the adjustment path of the sensing element depending on the number of Revolutions of the warping drum is interrupted. 5. The method according to claim 1 or 4, characterized in that each of the subsequent tapes without interrupting the skerry operation with flying feed change accordingly  the determined corrected feed at the transition from from the measuring winding phase to the remaining winding phase. 6. The method according to any one of claims 1 to 5, characterized characterized that the determined maximum possible Warp length is displayed. 7. The method according to any one of claims 1 to 6, characterized characterized that exceeding the maximum possible warp length through the desired warp length signa is lized. 8. warping machine for carrying out the method according to any one of claims 1 to 7, with a warping carriage, with a device for moving the warping carriage relative to the warping drum in accordance with the increasing winding thickness during warping of the individual warping belts, with a feeler and a revolution counter for measuring the winding thickness in Depending on the number of warping drum revolutions in the measuring winding phase of the first warping belt and with a processor for determining the corrected feed and for controlling the basic winding, measuring winding and remaining winding phases of the individual warping belts in accordance with the specified and the corrected warping carriage feed, characterized in that a Optionally adjustable press roller ( 22 ) is provided to act on the winding of the warping tapes and that the processor ( 31 ) from the supplied measurement data of the sensing element ( 24 , 25 ) and the revolution counter ( 30 ) for the corrected feed or from the corrected th feed rate and from the free winding length assigned to the remaining winding ( 29 ) and from the data already corresponding to the basic and measuring winding ( 27 or 28 ) wound warp thread length, a maximum possible warp length is calculated and entered with a predetermined, previously entered compares the desired warp length and emits a warping machine stop signal if the desired warp length exceeds the maximum possible warp length. 9. warping machine according to claim 8, characterized in that via an input / display panel ( 33 ) warp data such as winding volume, winding density, number of warp threads, fineness of the warp threads in the processor ( 31 ) can be entered to determine an initial maximum possible warp length by the processor is compared with the predetermined, previously given, desired warp length and that the processor emits a stop signal to prevent the warping machine from starting when the desired warp length exceeds the maximum possible warp length. 10. warping machine according to claim 8, characterized in that the press roller ( 22 ) is already in the measuring phase or only when warping the remaining roll ( 29 ) by pressing a push button ( 32 ) of the input / display panel ( 33 ) is deliverable. 11. warping machine according to claim 10, characterized in that for the case of the delivery of the press roller ( 22 ) only when the residual roll ( 29 ) via the push button ( 32 ) at the same time in the processor ( 31 ) an assigned correction factor for the calculation of corrected feed and the maximum possible warp length can be entered. 12. Warping machine according to one of claims 8 to 11, characterized in that the entered warp data and the determined maximum possible warp length can be displayed on the input / display panel ( 33 ). 13. warping machine according to claim 8 or 9, characterized in that an optical or acoustic Signalein direction ( 38 ) for signaling an exceeding the maximum possible warp length is provided by the desired warp length.