JP7653245B2 - Supply of a twill bobbin to a number of work stations of a textile machine for producing a twill package - Google Patents

Description

The invention relates to a method for supplying a plurality of working stations of a textile machine for producing a traverse package, in which at least two service units for supplying the traverse bobbins to the working stations are supplied from a supply device extending in the longitudinal direction of the machine. The service units have operating means for stopping the traverse bobbins on the supply device and for receiving the traverse bobbins from the supply device. When a traverse bobbin is requested by a service unit, the service unit is assigned the traverse bobbin and is handed over to the supply device. The invention likewise relates to a textile machine for producing a traverse package for carrying out the method. The textile machine includes a control device for controlling the service units.

In textile machines for producing twill packages, in particular in rotor spinning, air spinning or winding machines, a service unit is used which can run on a guide rail on the long side of the textile machine. The tasks of the service unit include splicing or joining the yarn after a yarn break and supplying bobbins to the work stations. The service unit is in turn supplied by a supply device running in the longitudinal direction of the machine, preferably a conveyor belt on which the bobbins are transported lying down. In order to keep the downtime of the work stations as short as possible in the event of a yarn break or a bobbin change, several service units are used in textile machines, for example two service units on each long side of the machine.

DE 199 05 856 A1 describes a rotor spinning machine which has several work stations between the end frames, which are arranged on both long sides of the machine. The work stations each have a spinning device and a downstream winding device and are supplied by several service units during operation. For bobbin exchange at the work stations, the service units are requested and positioned at the work stations. When a bobbin is requested from the bobbin magazine, the bobbin is transported to the work stations by means of a transport belt. The service units have operating means with which the delivered bobbin can be removed from the transport belt. The bobbin is then positioned in an operating position in the spinning device of the work station.

Such a service unit generally comprises a sensor, which detects the presence of a bobbin at or approaching the receiving position. Such a sensor may for example be configured as an optical proximity switch, in particular as an optical switch. An optical switch has an optical transmitter and a receiver integrated in one unit. The optical switch reacts to light reflected from the bobbin. Capacitive proximity switches are also possible. However, what all these sensors have in common is that they only detect the presence or proximity of a bobbin. They cannot distinguish between different bobbins.

If a service unit working further away from the bobbin magazine requests a bobbin as a first service unit, and before the bobbin reaches the first service unit, a second service unit positioned closer to the bobbin magazine also requests a bobbin, it may happen that the bobbin that was intended for the first service unit is removed from the conveyor belt by the second service unit, since, as mentioned above, this service unit is not able to distinguish between the various bobbins.

Therefore, in EP 1 675 797 it was already proposed that, in the event of a bobbin requirement of a first service unit positioned downstream in the conveying direction of the supply device, a subsequent bobbin requirement of a second service unit is suppressed until the first existing bobbin requirement is satisfied.

The first existing bobbin request can be considered satisfied if the first service unit that requested the bobbin receives the bobbin. Alternatively, the first existing bobbin request can be considered satisfied if the first requested bobbin passes through the second service unit. That is, the second bobbin request is suppressed until a path to the requesting service unit is clear.

Suppression of later bobbin requests leads to reliable allocation of bobbins to the requesting service unit and effectively prevents the service unit from receiving bobbins that have not been allocated to it. However, the waiting time caused by suppression of bobbin requests reduces the productivity of the textile machine.

EP 3279123 discloses a method for supplying empty bobbins to a maintenance device of a textile machine, in particular a spinning machine, in which the bobbins are supplied in one direction by means of a conveyor to a work station of the textile machine, to which a maintenance device requiring a new bobbin is located. If, while at least one bobbin is present on the moving conveyor, a further maintenance device simultaneously requests the supply of a bobbin, a further bobbin is placed on the moving conveyor. Here, the mutual positions of the work stations of the machine, to which a maintenance device requiring a new bobbin is located, should be evaluated. With regard to optimal utilization of the working time of the machine, a decision should be made regarding the optimal sequence of allocation of the bobbins present on the moving conveyor to the individual maintenance devices requiring a new bobbin. This should reduce the downtime when a bobbin is required and thus increase productivity. However, EP 3279123 does not solve the problem of receipt of a bobbin by a maintenance device to which no bobbin is assigned, as explained at the beginning.

DE 195 12 891 A1 discloses a textile machine for producing twill packages, which has a number of identical work stations, each with an intermediate bobbin store, a bobbin transport device for moving the bobbins stored in a central magazine close to each other, and an operating device for automatically feeding the work stations. The operating device has an operating mechanism for transferring the bobbins delivered on the bobbin transport device to the intermediate bobbin store of the work stations. However, disadvantages of such an intermediate store are the construction costs and the additional space required at the work stations. Furthermore, in the case of operations at various locations, it is not possible to guarantee that the correct bobbins are reliably prepared.

DE 199 05 856 A1 European Patent No. 1675797 European Patent No. 3279123 DE 195 12 891 A1

The object of the present invention is therefore to ensure fast and reliable supply of cross-wound bobbins to the work station.

To solve this problem, a method is proposed for supplying a number of work stations of a textile machine for producing a traverse package with a traverse bobbin, in which at least two service units for supplying the traverse bobbins to the work stations are supplied from a supply device extending in the longitudinal direction of the machine, and the service units have operating means for stopping the traverse bobbin on the supply device and receiving the traverse bobbin from the supply device. When a traverse bobbin is requested by a service unit, the traverse bobbin is assigned to this service unit and handed over to the supply device. The operating means receives the traverse bobbin from the supply device and loads it into the winding device of the work station without further storage. According to the invention, the time of handover of the traverse bobbin to the supply device, the conveying speed of the supply device as well as the position and speed of the requesting service unit are detected and evaluated. According to the invention, the operating means of the requesting service unit are driven and controlled depending on this evaluation so that the requesting service unit receives the traverse bobbin assigned to it.

The evaluation of the time of delivery of the cross-wound bobbin to the supply device, the transport speed of the supply device and the position and speed of the requesting service unit allows the requesting service unit to receive the cross-wound bobbin in a reliable manner, the evaluation being based on the known equation of motion for uniform motion, which here consists in particular of the relationship between the path length s, the speed v and the time t.
s = v t

Preferably, the service unit requests the bobbin as soon as it receives a request from the work station. This achieves rapid readiness of the bobbin.

The requesting service unit preferably receives the assigned bobbin as soon as the bobbin arrives at the service unit, thereby avoiding unnecessary delays.

In this case, preferably, the requesting service unit receives the cross-wound bobbin assigned to it before the service unit reaches the requesting work station.

Preferably, the evaluation includes identifying a time when an operating means for stopping the strand on the supply device should be activated. Alternatively, it is also possible to identify a position of the strand or the service unit at which an operating means for stopping the strand on the supply device should be activated.

According to a preferred embodiment of the method according to the invention, the evaluation comprises the calculation of a target time when the cross-wound bobbin assigned to the requesting service unit will reach the requesting service unit.

This target time is when the position s _H of the strand assigned to the requesting service unit and the position s _SA of the requesting service unit coincide with each other, i.e.
We reach the case where s _H =s _SA .

The position can be represented by the path distance between this position and a reference position. The reference position is preferably the position where the transfer of the cross-wound bobbin to the supply device takes place.

The position _sH of the cross wound bobbin is calculated here by the following formula:
s _H =v _T・(t _Z −t ₀ )
is obtained from the transport speed _vT of the feeder and the time difference between the target time _tZ and the time _t0 of the transfer of the cross wound bobbin to the feeder.

The position of the service unit must be known in any case in order to position it in front of the requesting work station. This position is obtained, for example, by communication between the service unit and the work station that receives the supply of the cross-wound bobbins or by a corresponding sensor system, as is known in various embodiments of the prior art. For the sake of explanation, it is initially assumed that the position s _SA of the service unit remains constant during the delivery of the bobbins. That is to say, the service unit is, for example, already positioned in front of the requesting work station.

Therefore, the target time is calculated according to the following formula: _tZ = _sSA / _vT + _t0 .

In order to take into account various tolerances, a time frame is preferably provided at the target time point for determining the activation of the operating means for stopping the traverse bobbin on the supply device. Ideally, this time frame is selected to ensure that the activation of the operating means for stopping the traverse bobbin is completed before the traverse bobbin reaches the service unit. Furthermore, the tolerances that arise on the supply device due to the bobbin transport can be taken into account. In the case of a supply device configured as a conveyor belt, for example, slippage between the traverse bobbin and the belt when placing the bobbin must be taken into account.

Notwithstanding the above assumptions, the service unit requesting the cross-wound bobbin does not necessarily need to be located at this point in time in front of the work station to which the cross-wound bobbin is to be delivered. When the service unit has finished a task at a work station, the next task is preferably identified from the task list. If this task requires bobbin delivery, the cross-wound bobbin is requested from the service unit. Once the request is confirmed, the service unit begins operation for the work station of the next task.

Therefore, according to the invention, the speed of the requesting service unit is also detected and evaluated. To take into account the speed _vSA of the service unit, for the position _sSA of the service unit at the target time _tZ , the following formula is used: _sSA = _vSA · ( _tZ - _t0 ) + _sSA0
where s _SA0 is the position of the service unit at the start, i.e. when the cross wound bobbin is delivered to the feeder.

Using the formula for the position _sH of the cross-wound bobbin, the target time can be calculated again. At the calculated target time, the service unit does not yet have to have reached the requesting work station. Rather, this service unit can already receive the bobbin on its way to the corresponding work station.

In the last embodiment of the invention, the position of the cross-wound bobbin on the supply device is not necessary. Here, only the target time is calculated. This calculation is preferably performed at the time when the cross-wound bobbin is handed over to the supply device. Repeating this calculation is only necessary if the conditions change.

According to an alternative embodiment of the method according to the invention, the position of the cross-wound bobbin on the supply device, which is assigned to the requesting service unit, is determined from the time of delivery of the cross-wound bobbin to the supply device and the conveying speed of the supply device.

The invention therefore also offers a simple possibility of determining the position of the stranded bobbin on the feeder, which can be determined at any time from the moment when the stranded bobbin is handed over to the feeder and the transport speed of the feeder. The path distance travelled by the stranded bobbin on the feeder and therefore the position _sH of the stranded bobbin in the textile machine is determined by the integral of the speed of the feeder from the moment of handover to the current moment. This integral, in the simple case of a constant transport speed, is given by the following formula:
s _H =v _T (t-t ₀ )
It can be replaced by multiplying the speed _vT by the period (t−t ₀ ) between the time t ₀ of delivery of the cross-wound bobbin to the supply device and the current time t.

That is, all that is required to drive and control the operating means of the service units so that only the bobbins assigned to each service unit are received is a comparison of the known position of the service units with the positions of the bobbins present on the feeder. Thus, this embodiment of the invention also successfully prevents a service unit from receiving a bobbin not assigned to it, even when there are several bobbins on the feeder. By comparing the position of the service unit with the positions of the bobbins present on the feeder, the time at which the operating means should be activated to stop the bobbins on the feeder is identified.

In a manner known per se, the service unit has operating means for stopping the stranded bobbin on the supply device and for receiving the stranded bobbin from the supply device. The operating means make it possible to stop the stranded bobbin in front of the service unit even in the case of a running supply device. The operating means for stopping the stranded bobbin can be activated already before the stranded bobbin is in the working range of the service unit. This therefore stops the next stranded bobbin passing the service unit so that it can be received by the service unit.

According to a preferred embodiment of the method according to the invention, the operating means for stopping the cross-wound bobbin is activated at the latest when the distance between the position of the cross-wound bobbin assigned to the requesting service unit and the position of the requesting service unit falls below a predetermined permissible distance.

In the last-described embodiment of the invention, the position of the cross-wound bobbin on the supply device is now known at all times, and the distance between the cross-wound bobbin and the service unit waiting in front of the work station that requires operation can be calculated simply. In order to increase the reliability of the bobbin reception, the operating means of the service unit are not activated only when the positions of the cross-wound bobbin and the service unit coincide, but rather are activated already before that. This makes it possible to compensate for errors in determining the position, which may occur, for example, due to slippage of the cross-wound bobbin on the supply device configured as a conveyor belt.

The invention allows a straight transfer of a stranded bobbin to the supply device when it is requested. This transfer is limited only by the cycle time of the bobbin magazine in which a number of stranded bobbins are stored for transfer. This cycle time is the time between the removal of a bobbin from the bobbin magazine and the transfer to the supply device. This results in a minimum distance between two stranded bobbins on the supply device. The permissible distance from the service unit to the stranded bobbin, at which the operating means of the service unit are activated, is preferably shorter than the minimum distance between two stranded bobbins. This ensures that a wrong stranded bobbin, i.e. a stranded bobbin not assigned to the service unit, is never received.

According to a preferred development of the invention, the operating means for stopping the cross-wound bobbin is activated at the earliest when there are no other cross-wound bobbins between the cross-wound bobbin assigned to the requesting service unit and the requesting service unit, i.e. the operating means can be activated as soon as the path for the cross-wound bobbin assigned to the requesting service unit is free.

As already explained, the present invention allows for reliable management of multiple bobbins on the supply device, so that, preferably, when a bobbin is requested by a second service unit, the second bobbin is assigned to this service unit and handed over to the supply device independently of the request status of the first bobbin.

Therefore, there is no need to suppress the second bobbin request as known from the prior art. In the case of a second bobbin request, the traverse bobbin can be immediately handed over to the supply device, even if the first bobbin request has not yet been fulfilled. This reduces waiting times and increases the productivity of the textile machine.

Preferably, the second bobbin request is processed in a similar manner to the first bobbin request, i.e. the time of delivery of the second bobbin to the supply device, the transport speed of the supply device and the position of the second requesting service unit are detected and evaluated. The operating means of the second requesting service unit are driven and controlled in such a way that the second requesting service unit receives the second bobbin assigned to it depending on the evaluation.

Preferably, the operating means for stopping the cross-wound bobbin is not used when a cross-wound bobbin not assigned to a requesting service unit approaches said requesting service unit. That is, when a first cross-wound bobbin approaches a second requesting service unit, the second requesting service unit can pass the first cross-wound bobbin.

The method according to the invention allows a reliable management of a number of strands of bobbins on a supply device, even if the allocation of the strands of bobbins to the requesting service units is changed after the strands of bobbins have been delivered to the supply device. Such changes in the allocation of a number of strands of bobbins present on a supply device to the requesting service units are known from the prior art mentioned at the outset in order to improve the utilization of the working time of the machine. In the case of the invention, it is only important that a service unit receives a strand of bobbins only if the strands of bobbins are also assigned to the service unit at the time of receipt.

Based on the inventive evaluation of the time of delivery of the cross-wound bobbin to the supply device, the transport speed of the supply device and the position of the requesting service unit, the known sensor for detecting the presence of the bobbin in the receiving area of the service unit can be omitted. Nevertheless, for redundancy reasons, it may be advantageous to additionally detect the approach of the cross-wound bobbin to the receiving position of the requesting service unit using a sensor. Advantageously, the position of the cross-wound bobbin on the supply device determined from the time of delivery to the supply device and the transport speed of the supply device is compared with the position of the cross-wound bobbin detected using a sensor. Alternatively, the calculated target time at which the cross-wound bobbin assigned to the requesting service unit should reach the requesting service unit can be compared with the time at which the sensor detects the cross-wound bobbin. This makes it possible to identify the cross-wound bobbin detected by the sensor and to determine whether it is assigned to the relevant service unit on the detection side.

The problem is further solved by a textile machine for producing a traverse package, comprising a plurality of work stations for carrying out the method according to the invention, in which at least two service units for supplying the work stations with traverse bobbins are supplied from a supply device extending in the longitudinal direction of the machine, the service units have operating means for stopping the traverse bobbins on the supply device and for receiving the traverse bobbins from the supply device, and when a traverse bobbin is requested by a service unit, the service unit is assigned a traverse bobbin and handed over to the supply device, and the textile machine includes a control device for controlling the service units. According to the invention, the control device detects and evaluates the time of handover of the traverse bobbin to the supply device, the conveying speed of the supply device and the position of the requesting service unit. The control device drives and controls the operating means of the requesting service unit in such a way that, depending on the evaluation, the requesting service unit receives the traverse bobbin assigned to it.

The present invention will be described in more detail below with reference to examples.

Rotor spinning machine with service unit. FIG. 2 shows a simplified diagram of the control principle of the service unit.

The rotor spinning machine 1 shown in FIG. 1 has several work stations 4 between its end frames 2 and 3, which are arranged on both long sides of the machine. The work stations 4, each including a spinning device and a winding device, are served by four service units 5, 5A, 5B, 5C, which can run along the sides of the machine on a rail structure 6. If a yarn break occurs in one of the work stations 4 or if a bobbin change is to be performed, one of the service units 5, 5A, 5B, 5C is automatically activated. The rotor spinning machine 1 further includes a trellis package transport device 7 arranged between the work stations 4 for transporting the completed trellis packages, and a bobbin supply device 8. The bobbin supply device 8 here includes a central bobbin magazine 9 arranged at the end side of the machine, a bobbin distribution device 10, and two bobbin transport belts 11, 12 extending in the longitudinal direction of the machine that supply bobbins to each work station 4 on the long side of the machine.

The service units 5, 5A, 5B, 5C have operating means (not shown) for stopping the cross-wound bobbins 17, 17A on the bobbin transport belts 11, 12 and for receiving these cross-wound bobbins 17, 17A from the bobbin transport belts 11, 12. The operating means are further configured to load these cross-wound bobbins 17, 17A into the packaging frames of the respective work stations 4. The operating means receive the cross-wound bobbins 17, 17A from the bobbin transport belts 11, 12 and load them into the packaging frames of the respective work stations 4 without further storage. If the service unit 5, 5A, 5B, 5C receives the cross-wound bobbins 17, 17A before the service unit 5, 5A, 5B, 5C reaches the requesting work station 4, the cross-wound bobbins 17, 17A are kept in the operating means until the service unit 5, 5A, 5B, 5C reaches the requesting work station.

The service units 5, 5A, 5B, 5C are connected to a control device 14 via lines 13 (Fig. 2). This control device 14 controls the four service units 5, 5A, 5B, 5C as a central control device, and the control device 14 itself is connected to the bobbin supply device 8 via lines 15 and to other control devices and machine modules (not shown) via lines 16.

If during the spinning operation the yarn package reaches the desired diameter at one of the work stations 4, this should be replaced with a new yarn bobbin as soon as possible. The replacement of the full yarn package with a new yarn bobbin is carried out in this embodiment by the service unit 5B, which travels to the requesting work station 4 and requests a bobbin from the bobbin supply device 8 via the control device 14. The yarn bobbin is placed on the conveyor belt 12. The time of handover is detected by the control device 14. This can be done, for example, by storing the time or starting a timer. At the same time, the progress related to the conveying speed of the bobbin conveyor belt 12 is detected and stored. The position at which the service unit 5B starts to operate and the speed at which the service unit 5B travels in the direction of the requesting work station are known. The yarn bobbin is designated in FIG. 1 by the reference number 17. It moves in the direction of the arrow from the conveyor belt 12 towards the service unit 5B. From the handover time of the traverse bobbin 17, the conveying speed of the bobbin conveyor belt 12, the starting position of the service unit 5B and the running speed of the service unit 5B, a target time can be calculated for the arrival of the traverse bobbin 17 at the service unit 5B. At this target time, the service unit 5B receives the traverse bobbin 17 and continues its run to the requesting work station 4. Due to the handover time and the conveying speed, the position of the traverse bobbin 17 on the conveyor belt 12 is always known and can be compared with the current position of the service unit, which results for example from the starting position of the service unit 5B and the running speed of the service unit 5B.

If the service unit also requires a traverse wound bobbin 17A after the service unit 5B, while the bobbin 17 for the service unit 5B is still being prepared, this request for the traverse wound bobbin 17A is immediately executed by the control device 14, and is independent of the position of the traverse wound bobbin 17 requested by the service unit 5B. The control device 14 also detects the time of delivery of the traverse wound bobbin 17A to the bobbin transport belt 12. Due to the transport speed of the bobbin transport belt 12, the position of the traverse wound bobbin 17A on the bobbin transport belt 12 is also always known. Advantageously, in this case too, the target time for the arrival of the traverse wound bobbin 17A at the service unit 5C is calculated.

That is, there is no risk of the cross-wound bobbin 17 assigned to the service unit 5B being stopped by the service unit 5C when it passes through the service unit 5C. The control device 14 checks that at this time, the position of the service unit 5C does not sufficiently coincide with the position of the cross-wound bobbin 17A assigned to this service unit 5C, or that this time does not sufficiently coincide with the target time at which the cross-wound bobbin 17A should reach the service unit. To this extent, the operating means of the service unit 5C are also not activated. If the operating means of the service unit 5C have already been activated to stop the cross-wound bobbin 17A, this operating means can be deactivated in time to allow the cross-wound bobbin 17 to pass unhindered.

Only when the cross-wound bobbin 17 reaches the service unit 5B is it received by this service unit. Similarly, the cross-wound bobbin 17A is received by the service unit 5C. The invention ensures that only the cross-wound bobbin assigned to a service unit is received by this service unit.

REFERENCE SIGNS LIST 1 rotor spinning machine 2, 3 end frame 4 work station 5 service unit 5A service unit 5B service unit 5C service unit 6 rail structure 7 cross-wound package transport device 8 bobbin supply device 9 bobbin magazine 10 bobbin distribution device 11 bobbin transport belt 12 bobbin transport belt 13 track 14 control device 15 track 16 track 17 cross-wound bobbin 17A cross-wound bobbin

Claims (12)

1. A method for supplying a plurality of working stations (4) of a textile machine (1) for producing a twin-wound package with twin-wound bobbins (17, 17A), comprising the steps of:
at least two service units (5, 5A, 5B, 5C) for supplying the twill wound bobbins (17, 17A) to the work station (4) are supplied with the bobbin from a bobbin transport belt (11, 12) extending in the longitudinal direction of the textile machine (1) , and the service units (5, 5A, 5B, 5C) are capable of running on a rail structure of the textile machine (1) along the side of the textile machine (1);
The service unit (5, 5A, 5B, 5C) has an operating means for stopping the cross-wound bobbin (17, 17A) on the bobbin transport belt (11, 12) and receiving the cross-wound bobbin (17, 17A) from the bobbin transport belt (11, 12),
When a cross-wound bobbin (17, 17A) is requested by the service unit (5, 5A, 5B, 5C), the service unit (5, 5A, 5B, 5C) is assigned the cross-wound bobbin (17, 17A) and delivers it to the bobbin transport belt (11, 12),
a time point when the cross-wound bobbin (17, 17A) is delivered to the bobbin transport belt (11, 12), a transport speed of the bobbin transport belt (11, 12), and a position and a speed of a requesting service unit (5, 5A, 5B, 5C) are detected, and a target time point when the cross-wound bobbin (17, 17A) will arrive at the requesting service unit (5, 5A, 5B, 5C) is calculated based on the detected time point when the cross-wound bobbin (17, 17A) is delivered, the transport speed of the bobbin transport belt (11, 12), and the position and the speed of the requesting service unit (5, 5A, 5B, 5C);
the operating means of the requesting service unit (5, 5A, 5B, 5C) are driven and controlled so that the requesting service unit (5, 5A, 5B, 5C) receives the assigned cheese (17, 17A) based on the calculated target time for the cheese (17, 17A) to arrive at the requesting service unit (5, 5A, 5B, 5C);
A method comprising: the calculation further comprises identifying a time when the operating means for stopping the cheese (17, 17A) on the cheese transport belt (11, 12) should be activated.
The method of claim 1. At the target time point, a time frame is provided that defines the activation of the operating means for stopping the cheese (17, 17A) on the cheese transport belt (11, 12).
The method according to claim 1 or 2 . From the time of delivery and the transport speed of the bobbin transport belt (11, 12), a position of the cheese (17, 17A) on the bobbin transport belt (11, 12) assigned to the requesting service unit (5, 5A, 5B, 5C) is calculated .
4. The method according to claim 1 . the operating means for stopping the cross-wound bobbin (17, 17A) is activated at the latest when a distance between a position of the cross-wound bobbin (17, 17A) assigned to the requesting service unit (5, 5A, 5B, 5C) and a position of the requesting service unit (5, 5A, 5B, 5C) falls below a predetermined permissible distance,
The method according to claim 4 . the operating means for stopping the cross-wound bobbin (17, 17A) is activated at the earliest when there is no other cross-wound bobbin (17, 17A) between the cross-wound bobbin (17, 17A) assigned to the requesting service unit (5, 5A, 5B, 5C) and the requesting service unit (5, 5A, 5B, 5C);
6. The method according to claim 4 or 5 . When a second service unit (5, 5A, 5B, 5C) requests a second bobbin (17, 17A), the second bobbin (17, 17A) is assigned to the second service unit (5, 5A, 5B, 5C) and transferred to the bobbin transport belt (11, 12) independently of the request state of the first bobbin (17, 17A).
7. The method according to any one of claims 1 to 6 . the time of delivery of the second twill bobbin (17, 17A) to the bobbin transport belt (11, 12), the transport speed of the bobbin transport belt (11, 12), and the position of a second requesting service unit (5, 5A, 5B, 5C) are detected, and a target time of arrival of the second twill bobbin (17, 17A) at the second requesting service unit (5, 5A, 5B, 5C) is calculated based on the detected time of delivery of the second twill bobbin (17, 17A), the transport speed of the bobbin transport belt (11, 12), and the position of the second requesting service unit (5, 5A, 5B, 5C);
the operating means of the second demanding service unit (5, 5A, 5B, 5C) is driven and controlled so that the second demanding service unit (5, 5A, 5B, 5C) receives the second cross wound bobbin (17, 17A) assigned to it based on the calculated target time when the second cross wound bobbin (17, 17A) will arrive at the second demanding service unit (5, 5A, 5B, 5C);
The method of claim 7 . the operating means for stopping the cross-wound bobbin (17, 17A) is not used when a cross-wound bobbin (17, 17A) not assigned to the requesting service unit (5, 5A, 5B, 5C) approaches the requesting service unit (5, 5A, 5B, 5C);
9. The method according to any one of claims 1 to 8 . the approach of the cheese (17, 17A) to a receiving position of the requesting service unit (5, 5A, 5B, 5C) is detected by means of a sensor;
The method according to claim 9 . The target time is compared to a time when the sensor detects the cross wound bobbin .
The method of claim 10 . A textile machine for producing trellis packages, for carrying out the method according to any one of claims 1 to 11 , comprising a plurality of working stations,
at least two service units (5, 5A, 5B, 5C) for supplying a twill wound bobbin (17, 17A) to the work station are supplied with bobbins from a bobbin transport belt (11, 12) extending in the longitudinal direction of the textile machine , and the service units (5, 5A, 5B, 5C) are capable of running on a rail structure of the textile machine along a side of the textile machine;
The service unit (5, 5A, 5B, 5C) has an operating means for stopping the cross-wound bobbin (17, 17A) on the bobbin transport belt (11, 12) and receiving the cross-wound bobbin (17, 17A) from the bobbin transport belt (11, 12),
When a cross-wound bobbin (17, 17A) is requested by the service unit (5, 5A, 5B, 5C), the cross-wound bobbin (17, 17A) is assigned to the service unit (5, 5A, 5B, 5C) and transferred to the bobbin transport belt (11, 12);
The textile machine includes a control device (14) for controlling the service unit (5, 5A, 5B, 5C),
the control device (14) detects a time point of delivery of the cross-wound bobbin (17, 17A) to the bobbin transport belt (11, 12), a transport speed of the bobbin transport belt (11, 12), and a position and a speed of a requesting service unit (5, 5A, 5B, 5C) , and calculates a target time point at which the cross-wound bobbin (17, 17A) will reach the requesting service unit (5, 5A, 5B, 5C) based on the detected time point of delivery of the cross-wound bobbin (17, 17A), the transport speed of the bobbin transport belt (11, 12), and the position and the speed of the requesting service unit (5, 5A, 5B, 5C);
the control device (14) drives and controls the operating means of the requesting service unit (5, 5A, 5B, 5C) so that the requesting service unit (5, 5A, 5B, 5C) receives the assigned cheese (17, 17A) based on the calculated target time when the cheese (17, 17A) will arrive at the requesting service unit (5, 5A, 5B, 5C);
1. A textile machine for producing a twill package, comprising: