JP2879686B2 - Equipment for feeding yarn to textile machines - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an apparatus for supplying yarn to a textile machine.

This device comprises a knotting device (knotter) for synthesizing yarn from a plurality of different yarn segments joined by knots (knots), and a loading mechanism and a take-out mechanism respectively before and after seen in the yarn transport direction. A storage device (intermediate storage device) that is disposed between the knotting device and the textile machine and partially stores the yarn in an intermediate manner, and measures the length of the yarn stored in the storage device to measure the length of the yarn. A measuring device that emits a signal of the measured length, the measuring device representing (characterizing) the length of the yarn inserted into the storage device.
A first measuring element for producing a first output signal;
A second measuring element for producing a second output signal representing the length of the yarn section removed from the storage device, and a length representing the length of the intermediately stored thread section derived from both output signals; And a calculation mechanism for generating the signal.

This type of feeder, also referred to as a storage yarn feeder (Speicherfounisseur), allows a permanent storage or storage of yarn parts whose length can be varied, for example when the consumption of yarn by a textile machine is reduced. In case of irregularities,
A yarn section having a certain length is temporarily stored and used to supply the machine to the machine according to the respective demand. In textile machines such as looms and knitting machines, such a yarn feeding device is used, for example, in combination with a yarn changing unit. In this case, the yarn changing unit synthesizes one end of each of the yarn sections having different characteristics, for example, different colors, from each other by sequentially knotting the ends thereof with knots or the like. The supplied yarn is supplied to a textile machine. During this process, all knots or similar joints occupy predetermined positions for fabrics manufactured by the corresponding textile machine with pre-knots or similar joints for the fabric manufactured by the corresponding textile machine. In order to do so, it is necessary to be able to know the length of the thread portion stored in the storage device exactly at any time, or to keep this constant.

In a known device of the type described at the outset (device according to EP-A-0063371), the yarn is wound by a winding finger onto a storage device configured as a rigid storage drum and positively wound. That is, it is unwound axially from the storage drum by a supply device which functions almost without slippage. During the formation of a knot or similar joint, the yarn must be stopped on the entry side into the storage drum, during which more yarn is unwound from the drum when the storage drum is being fed As a result, the length of the stored thread portion gradually decreases. Nevertheless, in order to ensure that the length of the stored thread portion can always be kept equal prior to the formation of each knot, the storage drum must be temporarily larger than its extension immediately after the formation of the knot. Measures must be taken to supply the yarn.

In order to achieve this goal, the known devices described above
The number of revolutions of the winding finger is measured, and the length of the thread portion supplied each time is calculated from the measured value, while the number of revolutions of the supply drum in a positive supply device disposed subsequently is measured. A measure is taken to detect the length of the thread portion fed from the reel. The drive of the winding finger is then controlled according to the difference between these two values, so that the same amount of yarn is always stored on the storage drum prior to knotting.

If this known method is applied in practice, the amount of yarn stored will gradually increase or decrease in any case, so that not only will the function of the storage drum be generally significantly impaired, but also the woven or knitted fabric. It has been clarified that an undesired displacement such as a joint portion or a knot portion occurs in the above. The reason for this drawback is that the length measurements at the inlet and the outlet of the device are performed in different measuring schemes, and from different movements (ie on the one hand from the movement of the winding fingers and on the other hand on the supply drum). From the movement) is derived. In other words, if a value slightly deviating from the actual length of the incoming yarn portion and the outgoing yarn portion is supplied from both measuring devices, the difference between the measured values by both measuring devices will be obtained. Since a total error occurs and this error is only increasing, the length of the stored yarn must be gradually increased or decreased each time. Such disadvantages cannot be avoided, for example, when the measurement error in the distance between two nodes or similar joints is very small.
Moreover, in this case, the length measurement, which is carried out in particular via a positive yarn feeder, results in an undesired slip of the yarn conveyed by this yarn feeder, albeit insignificantly.
All measurement errors based on this slip will be added, resulting in inaccurate results.

(Problems to be Solved by the Invention) Therefore, the object of the present invention is to improve the device based on the concept described at the beginning so that the total error described above does not occur, and the yarn stored in the storage device. In that the length of the part can be detected very accurately at any one time and / or at least at a certain point in time, the length can be very precisely adjusted to a predetermined target value. is there.

According to the measures of the invention proposed to solve this problem, the measuring device further comprises a length signal representing the length of the yarn intermediately stored in the storage device. It has a correction unit that is used for correcting, the correction unit is disposed before and after the storage device F when viewed in the yarn transport direction, scans the yarn f, and when any knot K passes. It includes knot detectors D1 and D2 that generate signals, and a signal generated from the knot detector D1 disposed in front of the storage device F and a knot disposed after the storage device F in the yarn transport direction. Based on the signal generated from the detector D2, after any nodule K passes through the nodule detector D1, passes through the storage device F and passes through the nodule detector D2, the actual nodule K stored in the storage device F Signal used to represent the length of the thread Wherein the signal from the correction unit used to represent the actual yarn length stored in the storage device is configured to be provided to a computing mechanism. I have.

Other advantageous features according to the present invention are:
This is achieved by the configurations described in claims 2 to 8.

(Examples) Next, the present invention will be described in detail with reference to two examples shown in the accompanying drawings.

The textile machine MT shown in FIG. 1 may be, for example, a loom or a knitting machine, and its yarn f is stored in a storage device F.
Supplied from The storage device F is supplied with a yarn from a knotting device N (for example, known from U.S. Pat. No. 4,645,248), which is connected to a plurality of stock bobbins B wound with yarns of different colors. Have been.

Yarn f extending between the textile machine MT and the outlet of the storage device F
Is a constant known value, and the length of the thread f extending between the entrance of the storage device F and the knotting device N is also a constant known value. On the other hand, the length of the yarn f between the inlet and the outlet of the storage device F is unknown and fluctuates, and is influenced by the length of the yarn portion stored in the storage device F each time.

In this embodiment shown in FIG.
Has a stationary storage drum, the yarn is wound on the storage drum by a charging mechanism M, which comprises a rotary winding finger driven by a motor. At the outlet of the storage device F, there is provided a take-out mechanism S configured as a so-called positive thread supply device that functions almost without slippage. In order to detect the length of the respective thread portion stored in the storage device F, a measuring device having a first measuring element E and a second measuring element C is used. These two measuring elements E and C are each configured as, for example, an electronic counter, which counts the output signal of the motor driving the winding finger or the positive thread supply device, and includes an angle code provided on the motor. The output signal generated by the container is a signal which characterizes the respective angular position of the motor and thus the angular position of the winding fingers or the positive thread supply driven by the motor. Therefore, these measuring elements E, C
Is wound on the number of rotations of each motor or a fraction thereof, and thus on the number of windings (winding number) of the yarn or storage drum,
Alternatively, the length or fraction thereof of the yarn portion fed from the drum is measured, and a signal corresponding to the measured value is generated.

In addition, the device comprises a computing device connected to the output of each measuring element E, C, for example, comprising a device CD configured as a comparator or a subtraction circuit. The difference of each output signal by
A length signal representing the length of the yarn portion intermediately stored in the storage device F is derived from both output signals.

The output of the computing mechanism is connected to the input of a control circuit IM as an interface, for example, whereas the output of the control circuit itself is connected to the control input of the charging mechanism M. The control circuit IM used in this case determines whether the length signal generated from the calculation device CD indicates a smaller yarn length or a larger yarn length than a predetermined target value. It is configured as a circuit of a type that adjusts the supply of the yarn by the loading mechanism M accordingly. The thread length is checked, for example, by a comparison circuit D. One input of the comparison circuit D is supplied with a signal of a target value Ref, and the other input is supplied with a length signal from a computer CD. Comparison circuit D
In this case, a corresponding difference signal which is sent to the control circuit IM and appropriately processed is generated.

According to such a form, it is possible to keep the length of the thread portion located on the storage drum substantially constant. However, separately from this, for example, a knot or similar joint is formed at the entrance side of the storage drum, and at the same time, the charging mechanism M is also stopped so that the yarn is continuously fed out at the exit side of the storage drum. Can be used. In this case, the length of the yarn portion positioned on the storage drum is changed so that the motor of the loading mechanism M is rotated again temporarily after the formation of the knot, etc. The control circuit IM is configured to again take a predetermined selected value before formation. In other words, in such an embodiment, the length of the stored thread portion is corrected stepwise rather than instantaneously. At the same time, however, the exact deviation between the length of the thread portion that is instantaneously located on the storage drum and the length that this thread portion should originally have, that is, the target value, is Also, there is an advantage that the display can be performed by the comparison circuit D.

In particular, based on the slight slippage of the yarn in the supply device forming the unloading mechanism S, the amount of the yarn to which the movement of the loading mechanism M or the unloading mechanism S is fed or the amount of the unwound yarn is not necessarily determined at all times. If not accurately indicated, the length of the storage yarn section detected by the computing device CD is:
It will gradually deviate from the length of the actually stored thread portion. In order to avoid such a total error, the measuring device has a special correction unit. According to the embodiment shown in FIG. 1, this correction unit is viewed in the direction of transport of the yarn f (arrow V 1 ), and the storage device F
, Each having one knot detector D1, D2, which are configured to function in an opto-electronic, capacitive or similar manner, provide a scanning of the yarn f To generate a signal each time the nodule K passes. In this case, two nodule detectors D
1. It is assumed that the distance between D2 and the distance from the loading mechanism M to the unloading mechanism S exactly matches for simplicity.

The output of each of the two knot detectors D1, D2 is a yarn section which is taken into and / or out of this storage device F by a storage device F while any knot K is being transported. Are connected to the means used for detecting the length of the yarn portion currently stored on the basis of. For this purpose, the device is provided with a further measuring element E ', for example, which is preferably constructed as another electronic counter, in which the nodule K has passed through one of the nodule detectors D1. When connected, the same nodule K
Is disconnected when passing through the other nodule detector D2.
In this embodiment, the measuring element E ', which is another electronic counter, is provided with the same signal as is supplied to the measuring element E, as indicated schematically by the line L in FIG. .

The output of the measuring element E 'is a measured value converter -E'.
Is connected, and the absolute value of the count number sent from the measuring element E 'is not changed by the measured value converter -E', but its value is given a negative prefix. This measuring value converter -E 'is connected to the second measuring element C. In this case, when a signal from the nodule detector D2 is generated, the output of the measuring element C is measured. At the same time, the output of the first measuring element E is set to zero on signal generation from the same nodal detector D2.

Next, the operation mode of the device according to the above-described embodiment will be described in detail.

When the device is started, the outputs of all the measuring elements E, C, E 'are each initially set to a zero value. In this case, the storage device is empty. That is, since there is no yarn storage, the length of the yarn portion located between the loading mechanism M and the unloading mechanism S is equal to the mutual distance between the two mechanisms M and S. The device is turned on (connected) in such a state, at which time the calculation mechanism determines that the length of the stored thread portion is equal to the distance between the loading mechanism M and the unloading mechanism S. As a result, the loading mechanism M starts the process of winding more yarn from the unloading mechanism S on the storage drum, and this process is performed when the output signal of the comparison circuit D disappears and the stored yarn is removed. The process is continued until the indication that the length of the portion has reached the target value Ref is displayed. At the same time, the computing device CD
You can see this number. In subsequent processes, the charging mechanism M is controlled by the comparison circuit D so as to maintain this value.

When the knot K formed by the knotting device N is detected by the knot detector D1 based on the operation of the textile machine MT, the measuring element E 'sets its output to a zero value and turns it on at the same time. Is done. So from this point,
The measuring element E 'starts measuring the length of the thread portion fed into the storage device F by the charging mechanism M. At the same time, the nodule K gradually moves in the storage device F and finally reaches the nodule detector D2. When the formation K reaches the nodule detector D2, the connection of the measuring element E 'is cut off by the output from the nodule detector D2, the output of the first measuring element E is reset to zero, and the output of the second measuring element E is reset to zero. Measurement element C is a measurement value converter-
Accept the value provided by E '.

At this point, the signal output from the output of the measuring element E 'corresponds to the actual thread section length stored in the storage device F when the knot K passes the knot detector D2. As a result, when the knot K passes the knot detector D1, the yarn portion located between the two knot detectors D1 and D2 must be knotted before the knot K is also detected by the detector D2. It must pass through detector D2.
In this case, the unloading mechanism S should naturally leave the storage device F completely empty, but this is based on the distance between the loading mechanism M and the unloading mechanism S without cutting the thread. Impossible. Therefore, at the same time, the loading mechanism M must at the same time replenish a thread of a length equal to the distance between the loading mechanism M and the unloading mechanism S or the distance between the two knot detectors D1, D2. When only the yarn of this length is supplied, the length of the stored yarn portion after the detection of the knot K by the knot detector D2 is exactly equal to the distance between the loading machine M and the unloading mechanism S. Will be equal. As is evident from similar considerations, while the knot K is being conveyed from the detector D1 to the detector D2, the same amount of yarn as sent by the unloading mechanism S is fed by the charging mechanism M. Alternatively, if more yarn being unwound from unloading mechanism S is picked up by loading mechanism M, measuring element E 'will indicate the length of the thread portion that has been stored.

Immediately after the nodule K appears on the nodule detector D2, the numerical value detected by the measuring element E 'is input into the measuring element C with the opposite prefix (+ to-). The signal replacing the previous length signal, which corresponds to the difference between the numerical value 0 at the output of the measuring element E and the new numerical value at the output of the measuring element C, is transferred by the computing mechanism to the comparison circuit D. If the correction signal detected according to the yarn progression state of the knot K passing through the storage device F matches the target value (Ref) signal input to the comparison circuit D, control as an interface is performed. The circuit IM maintains its inactive state. On the other hand, if the signal for correction differs from the target value (Ref) signal based on a total error that cannot be recognized by the calculation mechanism caused by a measurement error of the measuring element E or the measuring element C, for example, Then, the control circuit IM operates to control the charging mechanism M, and corrects the length of the intermediately stored thread portion to an appropriate value.

Correction operations of this type can be performed as all nodules K or selected nodules K pass through each nodule detector D1, D2. This length signal, which is generated by the computing mechanism and serves as a reference for the operation of the control circuit IM, can be kept within relatively narrow and acceptable limits.
If there is an error due to inaccuracy of the measuring elements E and C, this error is only added until the next measurement by the above-mentioned nodule K is made, at best. . In this case, the signal detected by one existing nodule K cannot, of course, escape one individual error, but this individual error is caused by the structure of the loading mechanism M or the unloading mechanism S used for the measurement. It is a constant error caused by inaccuracies.

The basis of the above description is that both nodule detectors D1, D2 are spaced apart from each other by a distance equal to the distance between the loading mechanism M and the unloading mechanism S, and at the entrance and exit of the storage device F. It is a point that is arranged in. However, the distance between the two nodule detectors D1, D2 can in principle be larger, in which case it is inevitable that the known distance between the nodule detector D1 and the entrance of the storage device F be reduced. In addition, nodule detector D2
Another known distance between the two and the exit of the storage device F must also be taken into account, which means that these two distances do not change during the continuation of the operation and are therefore simply subtracted from their measurements. Because it is good, it can be easily implemented.

Next, in the embodiment of the present invention shown in FIG. 2, the same reference numerals are used for the same portions as the embodiment according to FIG. In this case, the output of the measuring element E is connected on the one hand to the device CD of the computing mechanism and on the other hand to the storage element LB. Output and calculation device of storage element LB
The output of the CD is the addition stage in the calculation mechanism
The output of the addition stage SU, which is connected to each input of the SU and generates a length signal, is connected to the input of the comparison circuit D. The nodule detectors D1 and D2 in this embodiment are used to control the operation of each of the measuring elements E and C as described below.

At the start of the device, each measuring element E, C and the storage element
Since LB is set to a zero value and the storage device F is left empty, the stored thread part length has a value equal to the distance between the loading mechanism M and the unloading mechanism S. . Therefore,
Since the comparison circuit D displays the deviation from the target value Ref,
The control circuit IM controls the loading mechanism M so that the storage device F stores a thread portion of a desired length. At this point, the supply of the appropriate length signal is performed only by the device CD and the addition stage SU in the computing mechanism.

When the first knot K passes through the knot detector D1, the measuring elements E and C are set to zero and a new measurement of the length of the thread to be inserted or to be removed is started. Therefore, even if there is a total error, it can be removed. This nodule K is the second nodule detector D2
, This detector D2 sets both measuring elements E, C again to the zero value, while at the same time the output value of measuring element E at that time is passed into storage element LB,
Appear in that output. As in the embodiment shown in FIG. 1, the signals coming out of the outputs of the measuring element E and the storage element LB are again stored in the storage device F.
Is equal to the length of the yarn part which is stored in the storage device F as detected on the basis of the nodules K transported through it.

However, unlike the embodiment of FIG. 1, the length signal in this case is formed from the sum of the respective output signals of the storage element LB and the computing device CD. If the signal at the output of the storage element LB is equal to the target value Ref, the control circuit I
This state is maintained as long as the signal input to M keeps a value of zero, and in the subsequent processes of the loading mechanism M and the unloading mechanism S, loading or unwinding of the same yarn amount is performed. On the other hand, when the loading mechanism M and the unloading mechanism S convey different amounts of yarn, the difference between the output of the calculation device CD and the output of the calculation device CD until the predetermined target value Ref is restored. A signal that is specified by the output of the comparison circuit D and that represents this difference is input to the control circuit IM.

Also in this embodiment, no total error occurs as in the case of FIG. The value stored in the storage element LB is
Since the nodule K is checked each time as it passes through the storage device F, even if a total error occurs in the calculation device CD, it is corrected by this check. For example, if a slippage occurs in the operation of the unloading mechanism S, the length of the stored yarn portion increases between two knot passes because the measuring element C indicates the unloading amount larger than the actual value. I do. Therefore, on the next knot passing, the measuring element E measures the length of the storage thread portion which is greater than the target value Ref, and this length is stored in the storage element LB.
The loading mechanism M is then delayed by the control circuit IM with respect to the unloading mechanism S until a signal of minus sign equal to the undesired length increase appears at the output of the computing device CD. This signal is applied to the storage element LB at the addition stage SU.
Is removed from the output signal of the
The modified length signal from the SU will again be equal to the target value Ref.

When the next nodule or another selected nodule K passes, the process described above is repeated.

The present invention is not limited to the embodiments described above, but can be implemented in various different embodiments, which is particularly true for the charging mechanism M and the unloading mechanism S used in individual cases, This applies to the elements E and C, the nodule detectors D1 and D2, and the circuits connected to them. In particular, as shown in the embodiment of FIG. 2, some components of the device, such as the measuring element E, can be constructed or used as part of the measuring device as well as part of the correction unit. . Furthermore, the measuring element C assigned to the extraction mechanism S can be used to periodically modify the length signal. In this case, the length signal must be modified in view of the value obtained when the nodule K passes through the nodule detector D1. Because the length detected by the measuring element is only valid for this point,
This is because it is not valid even when passing D2. Further, in the embodiment shown in FIG. 1, when the nodule K arrives at the second nodule detector D2, the output of the measuring element C is set to zero value, and at the same time, the output signal from the measuring element E 'is changed. , Can be input to the measuring element E without changing its prefix and displayed on its output.

Further, the present invention is not limited only to a storage device F having a fixed storage drum, but has a completely different storage device, such as a rotatable storage drum. A storage device whose mechanism is constituted by a motor for rotating the drum can also be used. Further, the knotting device N itself may be used as the first nodule detector D1. For example, the signal output from the knotting device N at the time of nodule formation is evaluated. However, in that case, it is necessary to consider the distance between the knotting device N and the storage device F in the same manner as in the case of the nodule detector D1 arranged at a distance from the storage device F. Finally, the computing device CD according to the embodiment of FIG. 1 or the adding stage SU according to the embodiment of FIG.
Directly using the length signal generated at the output of
In general, it is possible to calculate the exact point in time of knot formation, which must be carried out earlier or later, depending on the length of the thread portion stored in the storage device F, if such measures are taken. For example, the length of the storage yarn portion at the time of forming each knot does not always have to be completely equal.

(Effects of the Invention) As described above, according to the present invention, there is an effect that the length of the thread portion stored in the storage device can be accurately detected.

[Brief description of the drawings]

FIG. 1 is a schematic system configuration diagram showing a first embodiment of the apparatus according to the present invention, and FIG. 2 is a schematic system configuration diagram showing a second embodiment of the present invention. B: stock bobbin, C: second measuring element CD: calculating device D: comparison circuit, D1, D2: nodule detector E: first measuring element, E ': measuring element -E '... measured value converter F ... storage device, f ...... yarn IM ... control circuit, K ...... nodules L ...... conductor, LB ... memory element M ...... loading mechanism, MT ... textile machinery N …… Notting device Ref… Target value, S… Removal mechanism SU… Addition stage V …… Arrow indicating the yarn conveyance direction

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jacques Vermouth-Gaud Swiss Parliament (Gee) Parc Seac-1258 Route des Celtois 23 A (56) Reference JP-A-1-97247 (JP, A) JP Hei 1-299165 (JP, A) Special table Hei 3-503298 (JP, A) (58) Fields surveyed (Int. Cl. ⁶ , DB name) D04B 15/38-15/62 B65H 51/20

Claims (8)

(57) [Claims] An apparatus for supplying yarn to a textile machine, comprising: a knotting device for synthesizing yarn from a plurality of different yarn sections joined by knots; , Each having a loading mechanism and an unloading mechanism, a storage device disposed between the knotting device and the textile machine for intermediate storage of the yarn, and a storage device for the intermediate storage in the storage device. A measuring device for detecting the length, the measuring devices are respectively disposed before and after the storage device when viewed in the yarn transport direction, and each of the measurement devices for the yarn loaded in the storage device. A first measuring element (E) for measuring the length and producing a first output signal indicative of the measured length, and measuring the length of the yarn removed from the storage device and measuring the measured length A second measuring element (C) that produces a second output signal And a calculating mechanism (CD) for calculating the difference between these two output signals and deriving a length signal indicating the length of the yarn intermediately stored in the storage device. A comparison circuit for comparing a length signal representing the length of the intermediately stored yarn from a calculation mechanism with a signal representing a target value to output a difference signal, and controlling the charging mechanism in accordance with the difference signal And a control circuit for supplying yarn to a textile machine of a type including
The measuring device further has a correction unit used for correcting a length signal representing the length of the yarn temporarily stored in the storage device, the correction unit being viewed in the yarn transport direction. Including knot detectors (D1) and (D2) arranged before and after the storage device (F) to scan the yarn (f) and generate a signal when any knot (K) passes, The signal generated by the nodule detector (D1) arranged in front of the storage device (F) and the signal generated by the nodule detector (D2) arranged behind the storage device (F) Based on the signal, after any nodule (K) passes through the nodule detector (D1), passes through the storage device (F) and passes through the nodule detector (D2), it is stored in the storage device (F). Is configured to generate a signal that is used to represent the actual yarn length And wherein the signal from the correction unit used to represent the actual yarn length stored in the storage device is provided to the computing mechanism. Equipment for supplying yarn to textile machines. 2. The correction unit comprises, in addition to the first measuring element (E), a measuring element (E ') supplied with the same signal as that supplied to said first measuring element (E). And then,
Both the signal generated from the knot detector (D1) and the signal generated from the knot detector (D2) are input, and the length of the yarn fed into the storage device (F) by the charging mechanism (M) is input. 2. The apparatus according to claim 1, further comprising a measuring element (E ') for measuring the length and generating a signal of the measured length. 3. The nodule (K) passes through the nodule detector (D1), passes through the storage device (F), and is stored in the storage device (F) when passing through the nodule detector (D2). When the signal used to represent the actual length of the actual thread is supplied from the correction unit to the calculation mechanism, the signal from the first measuring element (E) to the calculation mechanism (CD) until then. Instead of the output first output signal and the second output signal output from the second measuring element (C) to the calculation mechanism (CD), the output signal is stored in the storage device (F). The signal used to represent the actual yarn length is supplied from a first measuring element (E) and a second measuring element (C) to the computing mechanism (CD). Item 3. An apparatus for supplying yarn to a textile machine according to Item 2. 4. The computing mechanism comprises a device (CD) for generating a length signal in the form of a signal corresponding to the difference between the respective output signals from the two measuring elements (E) and (C). The elements (E) and (C) are each connected to the device (CD) and have the following form, that is, some knots (K) are viewed in the yarn transport direction and are stored in the storage device (F). ) Is passed through the nodule detector (D1), the output of the nodule detector (D1) turns on the measuring element (E ') at the same time as setting its output to zero value. The knot (K) moves in the storage device (F) according to the yarn transport direction and passes through the knot detector (D2) disposed behind the storage device (F) in the yarn transport direction. Then, from the nodule detector (D2), the first measuring element (E), the measuring element (E ') and the second A signal is output to each of the measurement elements (C), and the output of the first measurement element (E) is reset to zero value by each signal, and the measurement element (E ′) is connected to the nodule detector (D1). Is disconnected, and the second measuring element (C) outputs the output from the measuring element (E ') at the time when the connection to the nodule detector (D1) is interrupted as described above. Receiving both via the measuring value converter (-E '), said measuring elements (E),
The apparatus for feeding yarn to a textile machine according to claim 2, wherein (C) is connected to each other. 5. An apparatus for feeding yarn to a textile machine according to claim 1, wherein an addition stage (SU) is interposed between the calculation mechanism (CD) and the comparison circuit, and an output from the calculation mechanism (CD) is provided. The output of the first measuring element (E) is also connected to a storage element (LB) while being connected to one input of the addition stage (SU), and the output of the storage element (LB) is A configuration is employed in which the output from the addition stage (SU) is connected to a comparison circuit, and the nodule (K) is connected to the storage device (F).
After passing through the nodule detector (D2), the first nodule (K) connected to the nodule detector (D1) after the nodule (K) has passed through the nodule detector (D1) until this time. A signal representing the length of the yarn inserted into the storage device (F) which was measured by the measuring element (E) is input from the first measuring element (E) to the storage element (LB). The apparatus for supplying yarn to a textile machine according to claim 1, wherein 6. A storage device (F) in which some nodules (K) are provided.
After passing through the nodule detector (D2), the first nodule (K) connected to the nodule detector (D1) after the nodule (K) has passed through the nodule detector (D1) until this time. A signal representing the length of the yarn inserted into the storage device (F) which was measured by the measuring element (E) is input from the first measuring element (E) to the storage element (LB). 6. The apparatus according to claim 5, wherein the measuring elements (E) and (C) are simultaneously set to zero values. 7. A storage drum on which a storage device (F) is fixedly arranged and a winding finger rotatable about a drum axis for winding the yarn (f) on the drum. A drive motor for driving the finger, wherein the first measuring element (E) measures the number of rotations of the winding finger, thereby measuring the length of the yarn loaded in the storage device (F). 7. Apparatus for feeding a yarn to a textile machine according to claim 1, characterized in that it is configured as an element for producing a first output signal representing the measured length. . 8. The length of the yarn intermediately stored in a storage device (F), wherein the measuring device is connected to a comparison circuit (D) for comparing the length signal with a predetermined target value signal (Ref). A comparator circuit (D) connected to a control circuit (IM) connected to a drive motor of the charging mechanism so as to maintain the value defined by the target value signal (Ref). An apparatus for supplying a yarn to a textile machine according to any one of claims 1 to 7.