JPH0859088A - Device which automatically feeds or carries out full bobbin or empty tube in textile machine,and spinning frame and fly frame equipped with said device - Google Patents

Abstract

PURPOSE: To secure feeding/discharging full bobbins or vacant tubes to/from a textile machine with only a little labor and expense by monitoring the exchange process during or at the time of the feeding/discharging each tube or bobbin. CONSTITUTION: A sensor unit 29 with two sensors 31 and 32 is mounted on the right side of the machine frame 27. The sensor 31 detects a hanging holder 21 passing beside it even when a tube 23 or a bobbin 11 is not hung from the holder. On the other hand, through the sensor 32 detects a tube 23 or a bobbin 11 passing beside it, it doesn't detect a hanging holder 21 as long as a tube 23 or a bobbin 11 is not hung from the holder. Output signals from the sensors 31 and 32 are sent to an evaluation unit 33. The evaluation unit 33, together with a control unit 35, specifically controls the drive mechanism 36 of a hanging trolly line 15 in order to control the device for automatically feeding/discharging full bobbins or vacant tubes to/from the fly frame 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to feeding or supplying full bobbins or empty tubes in textile machines having one or a number of movable suspension trolley rows with suspension holders for bobbins or tubes. The present invention also relates to a spinning frame and a roving frame equipped with the above-mentioned device.

[0002]

2. Description of the Prior Art When automatically replacing a full bobbin with an empty tube in a textile machine with a large number of working positions, in particular in a spinning machine, the replacement process must be monitored in its actual course. For this purpose, the use of photocouplers is known, for example from DE 22 26 077 A2 or DE 38 36 330 A3, the optical path of which is a doff on a spindle. If the bobbin to be played is erroneously present, or if the empty tube is erroneously left by the gripper or holding mechanism of the automatic bobbin changer, it is shut off and thus a control action signal is generated in this case. .

The disadvantage of this method of monitoring the exact course of the replacement process when replacing a full bobbin with an empty tube is that the costs associated with monitoring are kept to an acceptable level.
The optical path of at least one photocoupler must extend over a number of working positions. It However, it is not possible to say that individual work positions are monitored for the exact course of the exchange process. In particular, it is not possible to identify defects at the respective working positions when a large number of defects occur simultaneously, i.e. when a large number of full bobbins or empty tubes remain on the spindle or on the holding mechanism.

Another drawback of these known monitoring methods is that it is not possible to recognize all defects in one or many tubes during the feeding process and to identify them in the working position of these tubes. Is to be.

[0005]

SUMMARY OF THE INVENTION The problem underlying the present invention is to ensure the supply and unloading of full bobbins or empty tubes to and from textile machines with little effort and expense. To provide a device for automatically supplying and unloading a full bobbin or an empty tube in a textile machine, in which it is impossible to identify even a defect that may occur at a position, and a spinning machine equipped with such a device. And to provide a roving machine.

[0006]

According to the invention, at least one stationary sensor unit is provided which is connected to an evaluation unit, the sensor unit being used in a suspension holder of a suspension trolley row. For monitoring the presence or absence of individual suspended full bobbins or empty tubes, and / or the status of the suspended full bobbins or empty tubes before and / or after the replacement process. At least one sensor for monitoring is provided, in which case at least one sensor unit is provided beside the path of movement of the suspension trolley row outside the exchange position of the first suspension holder and the last suspension holder. , In which case the evaluation unit is provided with the signal of the at least one sensor of the at least one sensor unit or this evaluation unit. It is compared with the reference information stored in Tsu the bets, and upon detection of unacceptable differences is solved by being configured to generate a control operation signal.

In contrast to known devices which monitor the exact progress of the replacement process by scanning for the presence and absence of bobbins or tubes in a certain working phase of the replacement process in the region of the working position of the machine, the present invention provides If there is
If the unloading and feeding of tubes or bobbins is done by their movement along a certain track, the exchange process is monitored by monitoring each tube or bobbin during the feeding movement or unloading each bobbin or tube. It is based on the idea that detection is performed by monitoring when moving.

By such a method, the replacement process or its correct course is not directly monitored as such.
However, by monitoring each supplied or unloaded tube or bobbin-depending on the properties of the sensor-incorrectness of the individual tube or bobbin and / or defects in the properties of the individual tube or bobbin. It is possible to confirm. This also provides indirect monitoring of the accuracy of the replacement process.

The device according to the invention is intended for direct monitoring of the replacement process and for monitoring the exact feeding or unloading of the bobbins or tubes and to keep the labor involved in carrying out the monitoring within an acceptable range. Of course, it can also be used in combination with known devices for directly monitoring the replacement process. This also avoids damaging the machine in the event of fraud during the replacement process.

In an embodiment of the invention, the device comprises a first sensor for detecting a suspension holder passing by a suspension trolley row provided for transporting tubes or bobbins. It comprises at least one sensor unit provided and a second sensor for detecting a bobbin or tube passing by this sensor unit. This allows the sensor to have a very simple configuration,
The advantage is that it can be formed, for example, as a photocoupler or an optical brightness sensor, the signal of the first sensor being in the simplest case the scan time point for the signal of the second sensor. Help for the decision. Depending on the reference information stored in the evaluation unit or supplied to this evaluation unit, which suspension holder these attachments must be attached to when feeding or unloading the tubes or bobbins, the evaluation unit can By comparing this with the reference information, an unacceptable error is detected and a corresponding control operation signal is given.

According to another aspect of the invention, one sensor or a number of sensors of the at least one sensor unit allows the full bobbin to be distinguished from the empty tube. For this purpose, the sensor unit can, in its simplest construction, be provided with another sensor for detecting a bobbin or a tube passing by, which sensor is by its side. It is provided at a predetermined interval in the horizontal direction with respect to an already provided sensor for detecting a bobbin or tube passing therethrough. The distance between these two sensors must then be chosen larger than the radius of the empty tube. At a certain point in time, i.e. when the vertical axis of the suspension holder lies in the front center of one of the two sensors, the scanning of both sensor signals results in a tube (only one of the two sensors). Detects an object), a bobbin (both sensors detect an object) is present, or both a tube and a bobbin (neither sensor detects an object)
It is possible to confirm whether or not it exists. Further, by using two sensors for detecting the movement of the tube or the bobbin at a certain interval in the moving direction of the tube or the bobbin, the extension of the object passing by these sensors, that is, the filling degree of the bobbin is obtained. It is also possible to detect. For this purpose, the time course of the sensor signal of at least one of the two sensors is evaluated,
For example, from the duration of the pulse that characterizes the passing movement by the object, the extension (on location) of the object in that direction of movement is detected. Of course, for this purpose, the speed of movement of the tube or bobbin must be known to the evaluation unit. In the simplest case, this evaluation unit is determined from the known distance in the direction of movement of the two sensors and the phase transition of the sensor signal during the arrival of a nearby or remote sensor in the direction of movement. It is possible to determine from the time difference. This method for determining the speed of movement of the tube or bobbin suffices at least for the sensor unit to be positioned where the bobbin or tube passes by at a substantially constant speed. Strictly speaking, it is sufficient for the velocity to be approximately constant in the time domain where only one tube or bobbin is needed to evaluate the sensor signal.

In another configuration of the invention, the sensor for detecting the bobbin or tube is such that the sensor directly detects the spatial extension of the object passing by it in at least one direction. Is configured. For this purpose, for example, CCD-elements or diode elements are used as sensors, the detection direction of these sensors being in particular perpendicular to the axis of the bobbin or tube. It is possible to detect the elongation of an object passing by the sensor, at certain points in time when the total elongation of the bobbin or tube is imaged, for example by simple optics on the sensor, possibly taking into account the imaging conditions. It is possible.

Of course, it is possible to detect the bobbin or the tube as a whole by using a camera and evaluate any specific information of the image of the tube or the bobbin by image processing. For example, in addition to the filling degree of the bobbin, it is possible to detect the shape of the bobbin or the shape of the cup which enables the inference of the accurate work mode of the work position. By using a suitable image evaluation when using the camera, it is not necessary to use other sensors (and also to use the sensor to detect the scanning time).

The device according to the invention can be combined with any textile machine, in particular a spinning machine, which requires feeding or unloading full bobbins or empty tubes to a corresponding number of working positions. is there. As compared to the monitoring method described at the beginning, a slightly longer stop time is required, since the detection of the replacement process takes place only after the bobbin or tube has been unloaded, but this drawback is due to the invention. Offset by the above advantages. If the machine is a known roving machine with flyers supported in at least one row--a row of tubes or bobbins runs between these flyers into which a row of suspended trolleys runs--by means of the device according to the invention. Alternatively, the monitoring method performed by this device does not extend the downtime of the machine. This is because the suspension trolley row must run out of the working position area before the machine is started anew.

Further advantageous embodiments according to the invention are described in the claims 2 to 12. Hereinafter, the present invention will be described in detail with reference to the embodiments illustrated in the accompanying drawings.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to the present invention will be described below based on a roving machine 1 equipped with the apparatus. The roving machine 1 shown in FIG.
Apart from the device according to the invention for automatically feeding or unloading full bobbins or empty tubes-of a known construction type. This roving machine is equipped with a draft mechanism 3,
This draft mechanism uses the drafted roving yarn in the flyer rail 7 supported in the flyer rail 7.
Supply in. The twisted yarns formed by the rotation of the flyer 9 respectively pass through the arms of the flyer, are guided onto the tube through the presser, and are wound on the tube to be formed on the bobbin 11.

In the working phase illustrated in FIG. 1, the roving bobbin 11 is finished and the bobbin rail 13 is in its lowest position. The flyer 9 is present transversely to the longitudinal axis of the roving machine 1.

A suspension trolley row 15 consisting of individual suspension trolleys 17 is pushed into the first flyer row from the right. The suspension trolley 17 guided along the track formed by the rails 19 is provided with two suspension holders 21 in the embodiment shown in FIG. 1, respectively. The empty state and the mounting of the empty tube 23 are alternately performed.

The movement of the suspension trolley row 15 is carried out by a pair of friction wheels 25 which are motor driven. Unpublished German Federal Patent Application No. P 44 06 48
Flyer 9 installed transversely to the longitudinal direction of the roving machine 1 as described in 8.8.
Guide means 26 are provided in each of the rows in the space enclosed by the arms of this flyer, which guide means for the suspended trolley row 15 in the position shown of the flyer 9. It forms a continuous guide track. These guide means 26 consist of individual rail parts which are movably mounted on the machine frame 27 and / or on the flyer rail 7.

At the position shown on the right side of FIG. 1 of the machine casing 27,
A sensor unit 29 including two sensors 31 and 32 is provided. These sensors 31, 32 are in particular formed as non-contact, non-inertial sensors, such as photocouplers or simple brightness sensors.

The sensor 31 is provided in the vertical direction,
The suspension holder 21 is configured to detect the suspension holder 21 passing by the suspension holder 21 even when the suspension holder 21 is not suspended from the tube 23 or the bobbin 11. On the other hand, the sensor 32 is provided in the vertical direction and detects the tube 23 or the bobbin 11 passing by, but unless the tube 23 or the bobbin 11 is attached to the suspension holder 21, the suspension is detected. The holder 21 is not detected.

The output signals of the sensors 31, 32 are fed to an evaluation unit 33 which, together with the control unit 3535, automatically feeds a full bobbin or empty tube to the roving bobbin 1 or this roving. Bobbin 1
It serves to control the device for the automatic unloading from the vehicle, in particular to control the drive mechanism 36 for the suspension trolley row 15. The control unit 35 is connected to the control unit 37 of the roving frame 1. Of course, both control units 35 and 37 can be combined into a single control unit, and this control unit 35 can also be configured to perform the function of the evaluation unit 33.

The control unit 35 is connected to a display unit 39, which is controlled by the control unit 35 with a control operation signal 41 if a fraud is detected during the course of the replacement process.

As shown in FIGS. 2 and 3, the suspension trolley row 15 first passes by the sensor unit 29 during the replacement process, during which, as shown in FIG. First, third, fifth ... Suspension holder 21
That is, the first suspension holder 21 of the suspension trolley 17 is fitted with an empty tube 23 in the feed direction each time.

In order to reach the exchange position before the working position of the roving frame 1, all the suspension trolley rows pass by the sensor unit 29, so that the sensors 31, 32 are shown in FIG.
The signal course shown in must be followed. Sensor 31
Signal 31a indicates that the suspension holder 21 has passed by. That is, each suspension holder 21 produces a pulse H with a constant shape. Since the sensors 31, 32--as shown in FIG. 2--are provided in the vertical axis, the output signal 32a shown in FIG. 4 for the sensor 32 is generated. At this time, each tube 23 passing by the sensor 32 corresponds to a larger diameter than the suspension holder 21 of each tube 23, and generates a pulse I wider than the pulse H of the sensor signal 31a. .

The evaluation unit 33 connects the signals 31a and 32a with, for example, an "AND" logic circuit, the signal then having a pulse substantially of the width of the pulse H at the position of the pulse I. In connection with the information stored in the evaluation unit or the information given to this evaluation unit, which suspension holder 21 the empty tube 23 has to be fitted to during the feeding process, this evaluation unit 33.
Confirms whether the detected actual mounting matches the desired reference mounting.

After the full bobbin 11 is doffed from the spindle at the working position of the roving machine 1 and the empty tube 23 is mounted on the spindle, the suspension trolley row 15 is again reversed in the opposite direction as shown in FIG. It passes by the sensor unit 29. In this case, the first suspension holder 2 is again used each time.
Since one is fitted with a full bobbin in the direction of movement of the suspension trolley row 15, the course shown in FIG. 5 for the signals 31a and 32a of the sensors 31, 32 is carried out. Since the suspension holder 21 of each suspension trolley 17 moves in the opposite direction and likewise carries out the mounting in the opposite direction, the course of this signal substantially corresponds to the course shown in FIG. 4, but In this case, the width of the pulse K of the signal 32a is correspondingly large due to the large diameter of the bobbin.

The evaluation of the signals 31a and 32a is carried out by the evaluation unit 33, again in the same manner, taking into account the corresponding reference information. In this case, of course, as in the case of the embodiment shown in FIG. 6, the tube feeding and the bobbin unloading take place in the same direction, instead of the only sensor unit 29 on one side of the region of the working position of the roving machine. It is also possible to provide sensor units 29 on both sides of the machine and to feed their signals to the evaluation unit 33 as well or to two separate evaluation units. In this case, due to the feeding process, the signal substantially shown in FIG. 4 is provided. However, in this case, with respect to the carry-out of the bobbin, the first suspension holder 21 is not mounted as seen in the movement direction because the movement direction is opposite to the pulse course shown in FIG. Are offset by the spacing of two pulses H of signal 31a. However, this difference can easily be taken into account during the signal evaluation by the evaluation unit 33 by correspondingly changing the reference information.

In addition to the above-mentioned simple possibilities of signal evaluation for recognizing a missing bobbin or tube, including the possibility of incorrect identification of the working position, in addition to the pulses I and K of the signal 32a. It is possible to discriminate between the full bobbin and the empty tube and to detect the filling degree of the bobbin by evaluating the width of the bobbin.

To determine the pulse width, for example, a timer is started or held at the rising and falling slopes of pulse I or K, respectively, or the sensor signal 32a is scanned to a digital value and the pulse width is set by an appropriate algorithm. Can be determined by

From the pulse duration, the local extension in the direction of motion of the object passing by the sensor 32 at a known speed of motion of the suspended trolley train, or of a known speed of the tube and bobbin. It is possible to detect. For this purpose, the speed of the suspension trolley train is transmitted to the evaluation unit 33, for example by the control unit 35, or is determined from the signal course detected by the evaluation unit 33, as will be described in more detail below.

In order to detect the current speed of movement of the suspension trolley train, the time interval of the pulse H of the signal 31a, for example, is measured and associated with a known constant interval of the suspension holder 21. Another possibility is that the sensors 31 and 32
Instead of being placed on the vertical axis, it is possible to set a constant horizontal distance, which allows the speed of movement to be determined from the phase transition of the signal, the radius of the bobbin and tube and the known sensor distance. Of course, in the latter case, the bobbin shape changes in the vertical direction when detecting individual bobbins,
This leads to inaccurate results in the determination of the velocity of movement, as well as the different filling degrees of the bobbins.

This problem is caused by the sensor unit 2 shown in FIG.
Avoided when 9 is used. In this configuration of the sensor unit 29, in addition to the sensors 31, 32, a third sensor 43 is used, which sensor has a predetermined horizontal distance from the sensor 32, in particular at equal vertical positions. It is provided. As a result, the signals 31a, 32a, 43
a takes the course as shown in the example of unloading the full bobbin 11 shown in FIG. Even in the embodiment shown in FIG.
Since the empty tube is supplied and the full bobbin is carried out in the same movement direction, the two sensor units 29 are similarly used in this case as well.
Is used. In this case as well, these sensor units are provided on both sides of the machine frame 27. However, the positioning of the sensor unit 29 is possible at each location in the trajectory of the suspension trolley train, through which the respective suspension holders of the suspension trolley train pass by during the feeding and / or unloading process.

As shown in FIG. 7, signals 32a and 43a
During a, a phase transition occurs which is dependent on the horizontal spacing of these signals 32a and 43a. Along with this, it is possible to determine the speed of movement of the bobbin or tube by the method described above, based on this phase transition and the determined interval of the sensor.

If it is desired to perform the simplest possible signal evaluation, the bobbin (the signal 32a at the time of scanning) can be obtained by a simple scan at the time determined from the sensor arrangement shown in FIG. 6 and the signals 31a of the signals 32a and 43a. And 43a are present), a tube (only signal 32a is present at the time of scanning), or an empty suspension holder (signal 32a is also 43a).
, Which does not exist at the time of scanning) has passed by the sensor unit in a simple way. Of course, sensors 32 and 43 for this purpose
The horizontal spacing of is larger than the radius of the empty tube,
It must be smaller than the radius of the full bobbin. The evaluation of whether the bobbin or tube is correctly mounted on the suspension holder is carried out by the evaluation unit 33 by comparing the scan-sensor signal with reference information. Assessing the filling degree of the bobbin, apart from a yes / no-response, is not possible with the method described above. In order to detect detailed information, for example on cup formation or bobbin filling, the sensor 32 in FIGS. 1 and 2 can be used as a complex sensor, for example as a photodiode element or an optically sensitive CCD-element, which sensor This is possible by mapping the image of the bobbin or tube passing by the side of the sensor onto the sensor with a relatively simple optical member.

In this case, the determination of the scanning time is made either by a horizontal offset which may occur in the case of the sensor 31 or by a continuous reading of the information of the sensor, in which case the evaluation especially passes by the sensor. This is done on the basis of such sensor signals formed when the object is completely imaged on the sensor.

In this way, in consideration of the mapping state, the local extension of the bobbin or tube passing by the sensor is linearly linear in the direction perpendicular to at least one tube axis or bobbin axis. It is possible to detect.

Further, a camera such as a CCD is used as a sensor.
-It is possible to use a camera to image not only the tube or bobbin on the sensor, but also at least part of the suspension holder. In this way, with proper image processing, by using only one sensor in the sensor unit 29, to know as much information as possible about the presence and absence of the tube or bobbin and the nature of the tube or bobbin. Is possible.

[0039]

According to the present invention, it is possible to guarantee the feeding and unloading of the bobbin or the empty tube to and from the textile machine with a little labor and cost, and to identify any defects that may occur in the working position. .

[Brief description of drawings]

1 is a front view of a roving machine in which a flyer arm equipped with the device according to the present invention is partially cut away.

2 is a schematic view of a device according to the invention according to FIG.

3 is a schematic diagram of a device according to the invention according to FIG.

FIG. 4 is a diagram showing a transition of a signal in a replacement process in the device shown in FIG.

5 is a diagram showing a signal flow in a replacement process in the apparatus shown in FIG.

FIG. 6 is a schematic view of another embodiment according to the present invention.

7 is a diagram showing a signal progress of a sensor when the bobbin shown in FIG. 6 is carried out.

[Explanation of symbols]

 1 Rover spinning machine 3 Draft mechanism 5 Introducing pipe 7 Flyer rail 9 Flyer 11 Full bobbin 13 Spindle rail 15 Suspended trolley row 17 Suspended trolley 21 Suspended holder 23 Coarse thread tube 25 Friction roller 27 Machine frame 29 Sensor unit 31, 32, 43 sensor 31a, 32a, 43a signal 33 evaluation unit 35, 37 control unit 36 drive mechanism 39 display unit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D01H 9/04 F

Claims (12)

[Claims] A bobbin (11) or a tube (2)
3) with one or several rows of suspension trolleys (15), which are equipped with suspension holders (17) for
An evaluation unit (33) for a device for supplying or unloading a full bobbin or an empty tube in a textile machine.
There is provided at least one stationary sensor unit (29) which is connected to the individual full bobbin (11) suspended on the suspension holder (21) of the suspension trolley row (15). ) Or for monitoring the presence or absence of empty tubes and / or before the process of replacing the suspended full bobbin (11) or empty tube and / or
Alternatively, it is provided with at least one sensor (31, 32, 43) for monitoring the state after the replacement process, in which case at least one sensor unit (29) is provided in the path of the suspension trolley train (15). It is provided beside the exchange position of the first suspension holder and the last suspension holder (21), in which case the evaluation unit (33) comprises at least one sensor (3) of at least one sensor unit (29).
1, 32, 43) signal (31a, 32a, 43a)
Is compared with reference information provided to or stored in this evaluation unit (33) and an unacceptable difference is detected, a control action signal (41)
An apparatus configured to generate a. 02. At least one sensor unit (2
9) a first sensor (31) for detecting a suspension holder (21) passing by and a second sensor (32) detecting a bobbin (11) or a tube (23) passing by. The device of claim 1, comprising: 03. The evaluation unit (33) is arranged to be able to distinguish between a full bobbin (11) and an empty tube (23) by means of sensor signals (31a, 32a) provided to it. The device according to claim 1 or 2. 04. The evaluation unit (33) is configured in such a way that it is possible to identify the shape of the bobbin and / or the diameter of the bobbin by means of the sensor signals (31a, 32a) provided to it. The device according to any one of claims 1 to 3. 05. At least one sensor unit (2
9) comprises at least one other sensor (43) for detecting a bobbin (11) or a tube (32) passing by, this sensor being provided with a second sensor (3).
In contrast to 2), it is provided with a predetermined interval on the horizontal plane that is larger than the radius of the empty tube (23) and smaller than the radius of the full bobbin (11). The described device. 06. A tube (23) through which the evaluation unit (33) passes by the signal (32a) of the second sensor (32) over time and the speed of the suspension trolley row (15) each time. Alternatively, it is configured to detect the diameter of the bobbin (11).
An apparatus according to claim 1. 07. A diode element or C in which a second sensor (32) is provided in the direction of movement of the suspended trolley row.
The evaluation unit (33) is embodied as a CD-device or a camera, and the signal (32) of the second sensor (32) is transferred to the evaluation unit (33).
A tube (2) that passes by each time from the time of a)
3) Or the device according to claim 3 or 4, characterized in that it is adapted to detect the diameter and / or the shape of the bobbin (11). 08. A scanning time point for the evaluation unit (33) from the signal (31a) of the first sensor (31) to the signal (32a) of the second sensor (32), or the second and other sensors. 8. Device according to any one of the preceding claims, characterized in that it is arranged to detect the (42a, 43) signal (32a, 43a). 09. At least one sensor (31, 3)
2. The device according to claim 1, wherein 2, 43) are embodied as optoelectronic sensors. 10. A bobbin (11) or a tube (2)
3) A device for supplying or unloading full bobbins or empty tubes in a textile machine, comprising a suspension holder (17) for 3) and having one or a plurality of movable suspension trolley rows (15). In the spinning machine provided, a stationary sensor unit (29) is provided, in which the device is connected to an evaluation unit (33), which sensor unit comprises a suspension holder (21) of a suspension trolley row (15). ) For monitoring the presence or absence of a full bobbin (11) or empty tube suspended in and / or before and / or after replacement of the suspended full bobbin (11) or empty tube At least one sensor 31, 32, 43) for monitoring the state of
In this case, at least one sensor unit (29) is provided beside the path of movement of the suspension trolley row (15), outside the exchange position of the first suspension holder and the last suspension holder (21), If the evaluation unit (33) has at least one sensor 31, 32, 43) of at least one sensor unit (29) the signal (31ap32ap43a)
Is compared with reference information provided to or stored in this evaluation unit (33) and an unacceptable difference is detected, a control action signal (41)
A spinning machine characterized by being configured to generate. 11. A suspension trolley row (15) carrying at least one row on the flyer rail (7) and carrying a tube (23) or bobbin (11) between them.
In a roving machine equipped with a flyer (9) that can
In this textile machine a bobbin (11) or a bobbin in a textile machine with one or several movable suspension trolley rows (15) with suspension holders (17) for tubes (23) A stationary sensor unit (29) equipped with a device for supplying or unloading empty tubes, which device is connected to the evaluation unit (33)
Is provided for monitoring the presence or absence of a full bobbin (11) or empty tube suspended in the suspension holder (21) of the suspension trolley row (15), and / or Or suspended bobbin (11)
Alternatively, at least one sensor 31, 3 for monitoring the status of the empty tube before and / or after replacement
2, 43), in which case at least one sensor unit (29) is located beside the path of movement of the suspension trolley row (15), the first suspension holder and the last suspension holder (2).
1) is provided outside the replacement position, in which case the evaluation unit (33) has at least one sensor unit (2
The signal (31ap32ap43a) of the at least one sensor 31, 32, 43) of 9) is compared with the reference information provided to or stored in this evaluation unit (33) and is not acceptable. A device is provided which is arranged to generate a control actuation signal (41) when a difference is detected, wherein at least one sensor unit (29) is provided outside the flyer row. Rover with a featured device. 12. A device known per se for directly monitoring the replacement process is provided.
The roving machine described in.