EP2824053B1 - Determination of a monitoring speed for a winding bobbin of a winding machine - Google Patents

Description

The invention relates to a method for determining a monitoring speed ("safe envelope speed") for a winding reel of a winding machine for winding a winding material on the winding of the winding material with a Wickelspulenistdrehzahl rotating reel, wherein the reel spool is preceded by a feed, so that when winding the winding material the winding spool can be supplied via the supply spool rotating at a feed spool speed.

The invention further relates to a control unit for such a winding machine as well as such a winding machine.

Winding machines are well known and serve for winding winding material, such as fibers or threads.

EP 0 183 935 describes, for example, a winding machine with a drive whose speed is limited by a signal that defines a maximum speed.

Such a winding machine has a variable or (controllable / adjustable) adjustable speed, i. Wickelspulenistdrehzahl, drivable winding reel, on which the winding material during the winding process (during operation of the winding machine) is wound.

In order to ensure an optimal winding pattern in the winding reel or winding geometry on the reel spool, it is customary in the winding machine of the reel spool a second, also with variable or (controllable / adjustable) adjustable speed, ie Zuführspulenistdrehzahl, driven coil, ie a Zuführspule , for example, a delivery godet, upstream.

About this feed coil, the winding material is withdrawn during the winding process, the winding material, the supply spool usually once in a row several times, wraps around, fed to the reel spool and wound onto the reel spool.

Acting during the rotation of the winding coil (mass / weight) centrifugal forces and / or occur (mass distribution caused) unbalance in resonance at this, so the reel spool is characterized strong mechanical stress.

These forces and mechanical loads acting on them during the winding process or during the rotation of the reel spool can lead to damage of the reel spool, in particular to its support and / or axis, up to its complete destruction with potential danger potential arising therefrom for operating personnel.

The invention has for its object to provide a simple and cost-effective monitoring of a winding machine against possible mechanical damage to a reel spool of the winding machine during winding or during operation of the winding machine.

The object is achieved by a method for determining a monitoring speed ("safe envelope speed") for a winding reel of a winding machine for winding a winding material on the wound during winding of the winding material with a Wickelspulenistdrehzahl winding reel, a control unit for such a winding machine and such a winding machine with the features solved according to the respective independent claim.

If, during the rotation of the winding reel, which is usually highly rotating during the winding process, it is subjected to high mechanical stresses due to centrifugal forces and / or imbalances, then these forces or stresses on the reeling reel spool are dependent on their rotational speed, ie the reeling spool speed, and their rotational speed Mass, ie from the winding bobbin (-ist-) diameter / radius or winding / winding thickness.

In this case, under winding bobbin diameter or radius, in the following only winding bobbin diameter or radius, is the actual, physical (total) dimension, i. Diameter or radius, the winding spool understood, which is composed of the diameter or the radius of the empty / unwound winding spool and the related physical dimensions of the coil.

With increasing winding bobbin diameter / radius or increasing winding thickness, for example, with increasing winding of the winding material during the winding process (increase in circumference and weight of the winding bobbin), so increase the forces and mechanical stresses.

These forces and mechanical loads acting on them during the winding process or during the rotation of the reel spool can lead to damage of the reel spool, in particular to its support and / or axis, up to its complete destruction with potential danger potential arising therefrom for operating personnel.

According to the current Machinery Directive, this risk must be eliminated by the winding machine by means of corresponding local safety measures.

One approach to this is a speed monitoring in the winding machine or reel spool based on speed limits for the reel spool.

This can be done for an empty, i. Unwrapped, winding coil a "safe" limit speed on / be given, the compliance with the winding process to ensure safe operation of the winding machine.

A disadvantage of this simple speed monitoring means of this one "safe" limit speed for the empty reel spool, however, that this is a fixed, of the actual or current (actual) winding situation / geometry (Winding coil diameter / radius or winding thickness during the winding process) represents independent, over the entire winding process to be observed (speed) limit.

But increases with increasing winding diameter / radius or increasing winding thickness during the winding process, the load of the reel spool, the "safe", based on the empty reel spool speed limit would have changed accordingly, ie. be lowered / lowered, so as to provide a "safe" speed limit for the entire winding process or for the increased load with increasing winding diameter / radius or increasing winding thickness available.

That is, such a "safe" limit speed for a reel during / for the winding process and there changing or increasing winding diameter / radius or increasing winding thickness is not "static", but would be below this predetermined "safe" limit speed of the empty reel spool or would decrease continuously as the winding progresses - starting from the predetermined "safe" limit speed of the empty reel spool.

In other words, such a winding process variable or dependent, to be observed during winding process "safe" limit speed would decrease with increasing winding coil radius / - diameter or with increasing winding thickness.

These variable "safe" limit speeds can be represented by or depending on the winding spool diameter / radius, which is referred to as the speed envelope. Accordingly, the variable "safe" limit speeds are referred to as "safe" envelope speeds.

The speed envelope thus defines the - winding coil diameter / radius dependent - speed limit, which is the "safe" operation of the winding / winding reel (Wickelspulenistdrehzahl at a certain winding reel diameter / radius below the associated envelope speed) delimits the "hazardous" operation of the reel / reel spool (reel spool speed at a particular reel spool diameter / radius above the associated envelope speed).

With knowledge of this speed envelope or the "safe" envelope speeds for a winding machine or its winding bobbin together with the winding bobbin rotational speeds and the winding bobbin winding speeds or winding bobbin diameter / radii thus monitoring the winding process with regard to a "safe" or "dangerous" Operation possible.

If, at a reel spool diameter / radius during the winding operation, the reel spool speed exceeds its associated "safe" envelope speed ("perilous" operation), the reel spool speed may be reduced to a speed lower than the envelope speed, thus restoring operation of the reel into the reel "safe area" to bring, ie to move the winding machine back into the "safe area".

Thus, it is desirable for / at an operation of a winding machine or for a winding process of winding material on the reel to know their "safe" envelope speeds, so - with further knowledge of the winding coil thicknesses or winding reel diameter / radii during the winding process and their Wickelspulenistdrehzahlen during the winding process - to allow monitoring of the winding process in the winding machine.

However, this requires the knowledge of the winding coil thickness or the winding coil diameter / radius during the winding process.

By means of a laser distance meter, for example, the winding coil thickness or the winding coil diameter / radius during the winding process can be detected.

A use of such - safety beyond also two-channel required - winding reel diameter / - radius or Wickeldickenerfassung by laser distance measurement is expensive - and would increase the cost of such a winding machine.

The invention is thus based on a winding machine for winding a winding material on a winding coil rotating during winding of the winding material with a Wickelspulenistdrehzahl.

The winding material may be a fiber, in particular a natural fiber, a vegetable fiber, a mineral fiber, a synthetic fiber, a synthetic polymer fiber or an industrially produced inorganic fiber, or a thread, in particular a glass thread.

The winding bobbin is preceded by a feed bobbin of the winding machine, so that during winding the winding material of the winding bobbin can be fed via the feed bobbin rotating at a feed bobbin rotational speed.

In this case, "fed via the supply reel" means that the winding material is not wound up on the supply reel (connected to a changing winding thickness or feed reel radius / diameter), as in the reel spool, but that the winding material, for example by a single wrap the supply spool, passes over the spool (connected to fixed or constant feed spool diameter / radius or fixed / constant "winding thickness" (wrap) on the feed spool).

Such a supply reel, for example, be a Liefergalette.

In this case, the winding speed or feed bobbin speed is to be understood as the speed currently occupied / driven by the winding bobbin or supply bobbin at a particular point in time (during the winding process).

If the winding reel / supply reel or relevant (reel) drive units, such as electric motors, can be controlled, for example by a corresponding control unit (in short, only control) of the reeling machine, its speed can be changed or controlled by the control of the reeling machine. be managed.

This winding bobbin or feed bobbin rotation speed can certainly be detected in the sense of a European machine guideline without encoder or also with encoder contact on the winding bobbin or supply bobbin. The detection of the winding bobbin or feed bobbin rotational speed can also take place in two channels, thereby satisfying the Machinery Directive.

In the method for determining the monitoring speed, it is then provided that a ratio of the winding spool speed and the feed spool speed is formed. This ratio describes an actual winding thickness on the reel spool.

Simplified and vividly expressed, on the ratio of the actual speeds of winding and feed reel in the winding machine, a size for the (actual) winding thickness is determined - without a - costly - measurement of the actual physical dimension of the winding is necessary.

If the rotational speeds of the reel spool or supply reel are used here, costly detection systems, such as laser distance meters, for the winding thickness are avoided.

mit

• n_Wickel = Wickelspulenistdrehzahl
• n_G = Zuführspulenistdrehzahl.

In the simplest case, the ratio size can be formed by dividing the winding coil actual speed by the feed coil actual speed: $$\mathrm{married}\ddot{\mathrm{a}}\mathrm{ltnisgr}\ddot{\mathrm{OSS}}\mathrm{e}=\left({\mathrm{n}}_{\mathrm{reel}}/{\mathrm{n}}_{\mathrm{G}}\right)$$

With

• n _winding = winding spool speed
• n _G = feed bobbin speed.

The monitoring speed of the reel spool is then determined from a predetermined limit speed for the unwound or empty reel spool ("safe" (limit) speed empty reel spool ") and the ratio of the actual winding thickness on the reel spool described.

This "safe" (limit) speed empty reel spool "for the reel spool is specifiable, for example, by a manufacturer of the reel spool or the winding machine, represents a value for a mechanical load size of the empty reel spool - and can empirically, for example, by centrifugal tests and / or load tests, and / or computationally, for example by means of FEM (finite element method) to be determined.

The control unit for the winding machine is set up to carry out the method for determining the monitoring speed. For example, it may be a programmable controller in which the method for determining the monitoring speed is programmed. It can also have a processor on which the method for determining the monitoring speed runs as an executable computer program.

The method for determining the monitoring speed can be realized by a computer program product having a storage medium on which a computer program is stored, which executes the method for determining the monitoring speed.

The winding machine has the control unit.

The invention is based on the consideration that the winding thickness of the winding material on the reel spool during winding in the ratio of the actual speeds of the reel spool and the Zuführspule reflected when the winding material is supplied during winding over the supply reel of the reel spool.

If the winding material with predeterminable web speed or Wickelgutlaufgeschwindigkeit - fed to the winding reel and wound up there during winding, so decreases with increasing winding thickness of the winding material on the reel, the actual speed of the reel spool in relation to the actual speed of the feed from.

Simply and vividly, the feed reel represents "a kind of reference" in the "reel spool" system (changing upon reeling). State variables of this system "reel spool", such as the reel spool speed, can be referenced to the "feed reel" reference from the current ratio of reference "feed bobbin" and system "winding bobbin" the current state of the system "winding bobbin" are derived.

This finding is used to determine the actual winding thickness on the reel spool via the ratio of reel spool speed and feed spool speed - without further / additional hardware, such as one, especially secure and dual channel, diameter sensing, and without measuring the actual physical dimension of the reel ,

With the Istwickeldicke or with the Istwickeldicke descriptive ratio then the "safe", related to the empty reel speed limit speed, ie the "safe" (limit) speed empty reel spool "to the" current winding condition "adjusted" - and so the monitoring speed or the "safe envelope speed" (depending on the respective winding geometry) are determined.

If this happens, i. the determination of the monitoring speed or the "safe envelope speed" cyclically during the winding process, for example, every second, so that the speed envelope of the reel spool can be determined.

"Safe Envelope Speed" / Watch Speed or Speed Envelope can be used to monitor the reel spool or winder during the wrapping process, for example, by comparing "Safe Envelope Speed" / Watch Speed (for a winding condition / wrapper thickness) with corresponding reel spool speed.

At a winding / winding thickness or coil diameter / radius during the winding process, the winding bobbin speed exceeds the associated "safe envelope speed" or "watchdog" speed ("hazardous" operation), the winding bobbin speed may be reduced to a speed lower than the "safe envelope speed" / monitor speed so as to bring the operation of the winding machine back in the "safe area", or the winding machine safely shut down.

Further developments of the invention will become apparent from the dependent claims and / or from the following explanations. The developments described relate both to the method for determining the monitoring speed, to the control unit and to the winding machine.

According to a development, it is provided that the monitoring speed of the reel spool is also determined as a function of a geometric ratio of the unwound / empty reel spool and the empty feed reel.

Here, the aspect ratio may be a radius or diameter ratio of the unwound reel spool and the empty feed reel.

mit

• r₀ = Radius der leeren/unbewickelten Wickelspule
• r_G = Radius der leeren Zuführspule.

In the simplest case, the aspect ratio can be formed by dividing the radii or the diameter of unwound / empty reel spool and empty feed reel, for example: $$\mathrm{Geometrieverh}\ddot{\mathrm{a}}\mathrm{ltnis}=\left({\mathrm{r}}_{\mathrm{0}}/{\mathrm{r}}_{\mathrm{G}}\right)$$

With

• r ₀ = radius of the empty / unwound reel spool
• r _G = radius of the empty feed bobbin.

To put it simply, the geometric relationship represents a fixed machine parameter taking account of the actual winding machine geometry (of the reel spool and feed reel), which - likewise the referencing to the reference "feed reel" - together with the limit speed for the unwound / empty reel spool, establishes a reference value for forms a "safe" web / Wickelgutlaufgeschwindigkeit during the winding process.

This "safe" web / reel travel speed can then be mapped to the "safe envelope speed" or monitor size using the ratio of the reel spool speed and the feed spool speed.

mit:

• n_Hülle = Überwachungsdrehzahl ("sichere Hüllkurvendrehzahl")
• n₀ = Grenzdrehzahl für die unbewickelte/leere Wickelspule
• r₀ = Radius der unbewickelten/leeren Wickelspule
• r_G = Radius der leeren Zuführspule
• n_Wickel = Wickelspulenistdrehzahl
• n_G = Zuführspulenistdrehzahl.

According to a development, it is provided that the determination of the monitoring speed takes place according to the following relationship: $${\mathrm{n}}_{\mathrm{H}\ddot{\mathrm{u}}\mathrm{lle}}=\left({\mathrm{n}}_{\mathrm{0}}*\left({\mathrm{r}}_{\mathrm{0}}/{\mathrm{r}}_{\mathrm{G}}\right)\right)*\left({\mathrm{n}}_{\mathrm{reel}}/{\mathrm{n}}_{\mathrm{G}}\right)$$

With:

• n _shell = monitoring speed ("safe envelope speed")
• n ₀ = limit speed for the unwound / empty reel spool
• r ₀ = radius of the unwound / empty reel spool
• r _G = radius of the empty feed bobbin
• n _winding = winding spool speed
• n _G = feed bobbin speed.

The monitoring speed can be determined using two channels - and thus "safely" within the scope of a Machinery Directive.

Furthermore, it can be provided to use the invention for monitoring a winding process of the winding material on the winding spool of the winding machine.

For this purpose, the monitoring speed may be cycled during the winding operation, i. in each case to predefinable, in particular to a plurality of predeterminable, times during the winding process of the winding material, are determined, for example, every second during the winding process.

If the winding thickness changes during the winding process, the respective winding-thickness-dependent "safe envelope curve speeds" or monitoring speeds - and thus also the rotational speed envelope are determined hereby / hereby.

The Wickelspulenistdrehzahl and / or the Zuführspulenistdrehzahl can / can thereby, in particular encoderless, at / on the winding machine or the reel or supply reel respectively to the predetermined, in particular to the plurality of predeterminable, times, for example every second, during the winding process of the winding material be recorded.

Next can then - during monitoring - the determined for a time monitoring speed with the Wickelspulenistdrehzahl this time be compared or can then be determined for each time of the predetermined times monitoring speeds compared with the respective Wickelspulenistdrehzahlen these times.

If the respective comparison satisfies a comparison criterion, for example if the monitoring rotational speed determined for a point in time is exceeded by the winding spool speed for this time, the winding spool speed can be changed, for example as part of a control of the winding process of the winding material to the winding spool of the winding machine. in particular (below the monitoring speed), or a safe shutdown within the meaning of the European Machinery Directive be initiated.

In simple terms, the control / control in the winding machine can provide that during the winding process of the winding machine, this is driven so that the winding spool rotational speeds during the winding process are kept below the respective monitoring speeds or "safe" envelope speeds.

The control of the winding machine would - if necessary then from the monitoring / comparison - appropriate adjustments, in particular a reduction, at the Wickelspulenistdrehzahl or at the actual speeds of winding and supply reel provide.

The previously given description of refinements or developments of the invention contains numerous features that are given in the individual subclaims partially summarized in several. However, these features may conveniently be considered individually and combined into meaningful further combinations.

The invention and its embodiment and advantages will be explained in more detail below with reference to an embodiment with reference to the figure.

FIG

schematisch einen Ausschnitt einer Wickelmaschine gemäß einem Ausführungsbeispiel.

It shows the

FIG

schematically a section of a winding machine according to an embodiment.

Exemplary Embodiment: "Safe Envelope Speed of a Speed Envelope of a Winding Spool of a Winding Machine"

The FIG shows schematically a section of a winding machine 2 and illustrates this a (speed) monitoring 100 or control / regulation of the winding machine 2 to ensure their "safe" operation.

The (speed) monitoring 100 is implemented as a "safety tool" in a control unit 5 of the winding machine 2 and satisfies the safety requirements specified by the machine directive. Signal acquisition and calculations are done so u.a. all two channels.

The winding machine 2 has, as the FIG shows, a variable or (controllable / adjustable) adjustable speed, i. Wickelspulenistdrehzahl 11, drivable winding reel 1, on which the winding material 3, i. In this case, a fiber (hereinafter for the sake of simplicity only short winding material 3), during the winding process 17 (during operation of the winding machine) - with changing / increasing winding thickness - is wound - and forms the winding 8.

The winding reel 1 is a second, also with variable or (controllable / adjustable) adjustable speed, i. Feed Spool Speed, drivable spool, i. a supply reel 4, in this case a delivery godet 4, upstream.

About this Liefergalette 4, the winding material during the winding process 17 is subtracted - while the winding material 3 wraps around the supply / supply godet 4 once or several times -, the winding reel 1 fed and wound onto the reel spool 1.

The (speed) monitoring 100 or the relevant control / regulation of the winding machine 2 or of the winding process 17 takes place by means of the "safety tool" implemented in the control unit 5 of the winding machine 2.

The control unit 5 is, as indicated in the FIG, connected via (signal) lines 6 with the reel spool 1 and the Liefergalette 4, via which the control unit 5, the electronics (not labeled), such as drive units 7, the reel spool 1 and the Liefergalette 4th controls.

The drive unit 7, which can be controlled via the control unit 5, drives (also by means of the control unit 5 coordinated / synchronized) the winding reel 1 and the supply godet 4 during the winding process 17.

Act during the rotation of the winding process 17 highly rotating - reel spool 1 (mass / weight) speed-dependent centrifugal forces and / occur (mass distribution conditional) speed-dependent imbalances in resonance at this and thus the reel spool 1 is heavily mechanically stressed, the speed control 100 is necessary in order to prevent a corresponding overstressing / loading of the reel spool 1 - and thus possible damage to the reel spool 1 and possibly an operator.

The speed monitoring 100 in the winding machine 2 is carried out on the basis of - by the control unit 5 and the "safety tool" determined - speed limits, i. of "safe" envelope speeds "10, (for the reel spool 1).

These may, what is ensured by the control unit 5 or the "safety tool" of the winding machine 2 with appropriate control / regulation of the winding machine 2, by the (current) Wickelspulenistdrehzahlen 11 are not exceeded, so a safe, (damage) safe operation to ensure the winding machine 2 and the reel spool 1.

Corresponding or correspondingly necessary control operations 150 of the control unit 5, for example on the drive units 7 of the winding 1 and the supply reel 4, for changing / lowering the Wickelspulenistdrehzahl 11 (in the case of exceedances of speed limits) are executed by the control unit 5.

mit:

• n_Hülle = Überwachungsdrehzahl 10, "sichere" Hüllkurvendrehzahl 10
• n₀ = Grenzdrehzahl für die unbewickelte/leere Wickelspule 15
• r₀ = Radius der unbewickelten/leeren Wickelspule
• r_G = Radius der leeren Zuführspule
• n_Wickel = Wickelspulenistdrehzahl 11
• n_G = Zuführspulenistdrehzahl 12

The determination 120 of the "safe envelope curve speed" / monitoring speed 10-in the control unit 5 of the winding machine 2-takes place according to the following relationship: $${\mathrm{n}}_{\mathrm{H}\ddot{\mathrm{u}}\mathrm{lle}}=\left({\mathrm{n}}_{\mathrm{0}}*\left({\mathrm{r}}_{\mathrm{0}}/{\mathrm{r}}_{\mathrm{G}}\right)\right)*\left({\mathrm{n}}_{\mathrm{reel}}/{\mathrm{n}}_{\mathrm{G}}\right)$$

With:

• n _shell = monitoring speed 10, "safe" envelope speed 10
• n ₀ = limit speed for the unwound / empty reel spool 15
• r ₀ = radius of the unwound / empty reel spool
• r _G = radius of the empty feed bobbin
• n _winding = winding spool speed 11
• n _G = feed bobbin speed 12

Here, the "safe" (limit) speed empty reel spool "15 is specified for the reel spool 1 by a manufacturer of the reel spool 1.

The "safe" (limit) speed empty reel spool "15 represents a value for a mechanical load size of the empty reel spool 1 - and has been determined by centrifugal tests.

The fixed (geometry / machine) sizes, r ₀ (radius of the unwound / empty reel spool 1) and r _G (radius of the empty feed reel / feed godet 4), result from the geometric measurement of the reel spool 1 and feed godet 4 and are also specified.

By dividing r ₀ (radius of the unwound / unreeled reel 1) by r _G (radius of the empty feed reel / feed godet 4), a aspect ratio 16 is formed which is fixed - taking into account the actual reeling machine geometry (from reel spool 1 and feed godet 4) Represents machine parameters.

By multiplying the geometry ratios 16 with the "safe" (limit) rotational speed of the empty reel spool 15, a fixed reference value for a "safe" web / reel running speed during the winding process 17 is formed.

The variable sizes, n _wraps (Wickelspulenistdrehzahl 11) and n _G (Zuführspulen- / Liefergalettenistdrehzahl 12), are certainly within the meaning of the European Machinery Directive encoderless in the winding machine 2 or at the winding reel 1 and supply godet 4 detected 130 - and so are the control unit 5 - at any time (currently) during the winding 17 - for speed monitoring 100 available.

By dividing n _wraps (winding bobbin rotation speed 11) by n _G (supply bobbin / delivery godet speed 12), without measuring the actual physical dimension of the bobbin 8, for example by a standoff laser, a value describing the actual winding thickness 13 (ratio size 14) is obtained. determined.

The control unit 5 thus calculates 120 the "safe envelope speed" / monitoring speed 10, n _envelope , during the winding process 17 cyclically, ie every second, (new) and compares 140 with the respective winding spool speed 11, n _spool , of the (respective) computation time point ( n _clad n vs. _winding).

If the control unit 5 determines that the "safe envelope curve speed" / monitoring speed 10 calculated at one time is exceeded by the winding coil actual speed 11 of this time, the control unit 5 controls the drive unit 7 of the winding reel 1 - and The winding spool speed is 11 down, ie below the "safe envelope speed" / monitoring speed 10. Synchronized to this - is shut down - the actual speed, ie the Liefergalettenistdrehzahl 12 - by the control unit 5 or by driving the drive unit 7 of the delivery godet 4.

In simple terms, the speed monitor 100 or the control / control in the winding machine 2, i. the control unit 5 or the "safety tool", provides that during the winding process 17 of the winding material 3 on the winding reel 1, the winding machine 2 is driven so that the Wickelspulenistdrehzahlen 11 during the winding process under the respective monitoring speeds 10 and "safe" envelope 10th being held.

Corresponding or correspondingly necessary control measures 150 of the control unit 5 on the drive units 7 of the winding 1 and the supply reel 4, for changing / lowering the Wickelspulenistdrehzahl (in the case of exceeding the monitoring speeds 10 and "safe" envelope speeds 10) by the control unit 5 then executed.

Although the invention has been illustrated and described in detail by the exemplary embodiment, the invention is not limited by the disclosed example, and other variations can be derived therefrom without departing from the scope of the invention.

Claims (13)

1. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) for winding a material (3) to be wound onto the winding bobbin (1), rotating at a winding bobbin actual speed (11) during the winding of the material (3) to be wound,

   - wherein, in the winding machine (2), a feed bobbin (4) is placed upstream of the winding bobbin (3), so that, during the winding, the material (3) to be wound can be fed to the winding bobbin (1) over the feed bobbin (4) rotating at a feed bobbin actual speed (12),

   in which

   - a ratio variable (14) describing an actual winding thickness (13) on the winding bobbin (1) is formed from the winding bobbin actual speed (11) and the feed bobbin actual speed (12), and

   - the monitoring speed (10) of the winding bobbin (1) is determined from a predefined limiting speed (15) for the unwound winding bobbin (1) and the ratio variable (14) describing the actual winding thickness (13) on the winding bobbin (1).
2. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to the preceding claim, in which the monitoring speed (10) of the winding bobbin (1) is also determined on the basis of a geometric ratio (16) of the unwound winding bobbin (1) and the empty feed bobbin (4).
3. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least the preceding claim, in which the geometric ratio (16) is a radius or diameter ratio of the unwound winding bobbin (1) and the empty feed bobbin (4).
4. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the preceding claims, in which the determination of the monitoring speed (10) is carried out in accordance with the following relationship: $${\mathrm{n}}_{\mathrm{envelope}}=\left({\mathrm{n}}_{\mathrm{0}}*\left({\mathrm{r}}_{\mathrm{0}}/{\mathrm{r}}_{\mathrm{G}}\right)\right)*\left({\mathrm{n}}_{\mathrm{bobbin}}/{\mathrm{n}}_{\mathrm{G}}\right)$$

   

   with:

   n_envelope = monitoring speed

   n₀ = limiting speed for the unwound/empty winding bobbin

   r₀ = radius of the unwound/empty winding bobbin

   r_G = radius of the empty feed bobbin

   n_bobbin = winding bobbin actual speed

   n_G = feed bobbin actual speed.
5. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the preceding claims, in which the material (3) to be wound is a fibre, in particular a natural fibre, a vegetable fibre, a mineral fibre, a chemical fibre, a fibre made of synthetic polymer or an industrially produced inorganic fibre, or a thread, in particular a glass thread.
6. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the preceding claims, in which the winding bobbin actual speed (11) and/or the feed bobbin actual speed (12) is/are measured (130) on the winding machine (1), in particular without a sensor and/or in two channels.
7. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the preceding claims, in which the feed bobbin (4) is a delivery godet.
8. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the preceding claims, used for monitoring a winding operation (17) of the material (3) to be wound onto the winding bobbin (1) of the winding machine (2), wherein the monitoring speed (10) is determined respectively at predefinable times, in particular at a multiplicity of predefinable times, during the winding operation (17) of the material (3) to be wound.
9. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least the preceding claim, in which the winding bobbin actual speed (11) and/or the feed bobbin actual speed (12) is/are measured respectively on the winding machine (2) and/or on the winding bobbin (1) and feed bobbin (4) at the predefinable times, in particular at the multiplicity of predefinable times, during the winding operation (17) of the material (3) to be wound.
10. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least one of the two preceding claims, in which the monitoring speed (10) determined for one time is compared (140) with the winding bobbin actual speed (11) from this time, or the monitoring speeds (10) respectively determined for a time from the predefined times are compared (140) with the respective winding bobbing actual speeds (11) from these times.
11. Method (100) for determining a monitoring speed (10) for a winding bobbin (1) of a winding machine (2) according to at least the preceding claim, used for open-loop and/or closed-loop control of the winding operation (17) of the material (3) to be wound onto the winding bobbin (1) of the winding machine (2), in which, if the comparison (140) satisfies a predefined monitoring criterion (18), the winding bobbin actual speed (11) is changed, in particular reduced (150).
12. Control unit (5) for a winding machine (2) according to at least one of the preceding claims, characterized in that the control unit (5) is set up to carry out a method according to at least one of the preceding claims.
13. Winding machine (2) for winding a material (3) to be wound onto a winding bobbin (1) that can be rotated at a winding bobbin actual speed (11), comprising the winding bobbin (1) and a feed bobbin (4) which can be rotated at a feed bobbin actual speed (12) and is placed upstream of the winding bobbin (1) in such a way that, during the winding, the material (3) to be wound can be fed to the winding bobbin (1) over the feed bobbin (4), characterized by a control unit (5) according to the preceding claim.

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