JP6991002B2 - How to monitor the normal operation of the spinning unit of a ring spinning machine - Google Patents

Description

The present invention relates to a method or apparatus for monitoring the normal operation of a large number of spinning units of a ring spinning frame during the manufacture of spinning cups. Here, it is a device that allows the characterization of the spinning cup, which is always capable of associating the spinning cup with the spinning unit of the ring spinning machine that manufactured the spinning cup, and is post-connected. This is done by a sensor device located in the winding unit of the automatic twill winding winder. Here, this sensor device constantly monitors the yarn of the spun cup during the subsequent unwinding process.

It is a spinning unit of a ring spinning machine, and it is known that when a spinning cup is manufactured, the yarn is finally completed in the immediate vicinity of the winding of the yarn around the spinning cup. Therefore, in such a spinning unit, direct control of the quality of the yarn is almost impossible. That is, known ring spinning machines can only count the yarn breaks that occur during the production of spinning cups in individual spinning units during the production of spinning cups. Here, the cause of this yarn break, for example, a shortage of feed material or a defect in the spinning spindle, is not always clearly identified.

Thus, in ring spinning spinning units, the spinning unit often has a relatively long period of time without the operator being aware of this, even though the spinning spindle has a defective spinning spindle. Over the years, there is always the danger of producing low-value spinning cups. This is because the spinning unit does not generate so many yarn cuts.

In such cases, the yarn unwound from the spinning cup is usually scanned by a sensor before being wound into a twill-wound package, where, for example, when the quality of the yarn is inspected, the spinning cup made. The low value of is first discovered when the spinning cup is unwound into one take-up unit of a post-connected automatic twill winder.

For this reason, known automatic twill winding winders are each equipped with a variety of equipment in the area of their winding unit, which allows the yarn to be continuously drawn from the spinning cup during the rewinding process. It can be monitored. Such a take-up unit has, for example, a so-called thread clearer. The yarn clearer inspects the running yarn for yarn defects such as thick, thin or double yarns so that such serious yarn defects are cut and removed.

The use of such yarn clearers prevents defective spinning cups from being unwound into a twill-rolled package, but in any spinning unit of a pre-connected ring spinning frame, defective spinning cups are manufactured. It was often not possible to track what was done.

Therefore, various methods have already been developed to identify such spinning units with operational defects.

In German Patent Application Publication No. 3712654 (DE3712654A1), for example, in connection with a spinning machine / winding machine combination, a spinning cup manufactured on a spinning unit of a ring spinning machine is located in its own spinning unit position. In the order associated with, first, the method of feeding to the measuring, counting and sorting device located between the ring spinning frame and the automatic twill winding winder is described. In such a measuring, counting and sorting device, the spun cup is then inspected and optionally sorted by a sensor for various quality criteria such as fluff, cup shape, fiber material and the like. Here, a spinning unit of a ring spinning machine that manufactured the corresponding spinning cup is also required.

However, the use of this type of additional measurement, counting and sorting device requires space and is relatively costly. Therefore, in practice, this type of additional measuring, counting and sorting device could not be established.

Another method for identifying a spinning unit that is defective in operation is German Patent Application Publication No. 3603002 (DE3603002A1), Swiss Patent Invention No. 410718 (CH410718A), German Patent Application Publication No. 4002500. It is known from the specification (DE4002500A1) and / or the German patent application Publication No. 4209203 (DE4209203A1).

In these known methods, on the one hand, the spinning cup is characterized in that it is always possible to track which spinning unit of the ring spinning machine produced the spinning cup, and on the other hand, the quality of the spinning cup is rewound. It is characterized by being monitored by sensor equipment installed in the area of the winding unit of the automatic twill winding winder during the process.

In the method described in German Patent Application Publication No. 3603002 (DE3603002A1), for example, on the spinning machine side, an identification mark is fixed to the completed spinning cup, and the spinning cup is manufactured by this identification mark. The spinning unit is identified. On the winder side, the take-up unit determines the quality of the yarn by the yarn cutting sensor during the rewinding process. That is, for a spinning unit of a ring spinning frame that produces a spinning cup that is clearly defective when the yarn cutting frequency of the spinning cup exceeds a predetermined value registered in the control unit. Reverse detection can be performed.

Swiss Patented Invention No. 410718 (CH410718A) also describes how information is attached to each spinning cup made by a spinning unit of a ring spinning frame. This information reveals which spinning unit of the ring spinning machine produced the spinning cup before it was fed to the post-connected winder.

Even with such a known method, the spontaneous cutting of the yarn to be drawn from the spinning cup is counted during the winding process of the spinning cup into one take-up unit of the post-arranged automatic twill winding winder. ..

When the predetermined boundary value is exceeded, the spinning cup is taken out and supplied to the reading device. That is, even with this known method, by counting the spontaneous cutting of spinning cups, it was confirmed that a crude, defective yarn was produced in one spinning unit of a ring spinning machine. The information attached to this spinning cup identifies the spinning unit that is defective in operation.

German Patent Application Publication No. 4002500 (DE4002500A1) provides a spinning cup or a spinning cup carrier with a source mark formed as an erasable and programmable memory chip, respectively, on which the ring spinning frame is provided. Describes how a spinning unit of a spinning frame records which spinning cup produced the corresponding spinning cup. In German Patent Application Publication No. 4002500 (DE4002500A1), the winding unit of the post-connected automatic twill winding winder further provides a thread quality monitoring device and an automatic mark erasing device in the form of a thread clearer, respectively. I have. This means that during the spinning cup rewinding process, if the quality of the spinning cup falls below a given quality standard, the spinning cup will be immediately ejected from the winding unit of the automatic twill winding winder, otherwise as usual. , It means that the source mark will not be erased.

Next, in subsequent sections of the automatic twill winding winder transfer system, based on this source mark, it is determined which spinning unit of the ring spinning machine produced the ejected, defective spinning cup.

Comparable methods or devices for monitoring the normal operation of spinning units of ring spinning machines are also known from German Patent Application Publication No. 4209203 (DE4209203A1).

This document also describes a spinning / winding machine combination in which one writable information carrier is associated with each spinning cup. This information carrier contains information about the spinning unit of the ring spinning machine that made the spinning cup. From the feeding process of the spinning cup in one winding unit of the automatic twill winding winder, it is possible to infer the operating state of the spinning unit in which the corresponding spinning cup was created.

The winding unit of the automatic twill winding winder is now between the electronic yarn clearer, which monitors the running yarn of the spinning cup, and the winding unit and the information carrier of the spinning cup, respectively, during the rewinding process. It is equipped with equipment for exchanging information.

In addition, a central memory is provided. It is configured as a long-time memory and is connected to a memory management and evaluation device equipped with a display device.

However, the drawback of the known methods or devices mentioned above is that this identifies only spinning units of ring spinning machines that have already produced unusable yarns for long periods of time.

In connection with the automatic twill winding winder, it is further known to provide a yarn tension sensor for each winding unit of such a textile machine. This sensor constantly detects the current yarn tension of the running yarn during the unwinding process of the spinning cup / twill winding package so that the twill winding package is created by winding at a given yarn tension. ..

The thread tension sensor is here connected to a so-called thread tensioner. In addition, the yarn tension sensor corrects the take-up speed at the relevant take-up unit, if necessary, if the yarn tension is excessively high.

Therefore, by using such a yarn tension sensor, predetermined winding conditions are maintained during the unwinding process and the resulting twill winding package meets high quality requirements with respect to its own winding tension.

German Patent Application Publication No. 3712654 German Patent Application Publication No. 3603002 Swiss Patented Invention No. 410718 German Patent Application Publication No. 4002500 German Patent Application Publication No. 4209203

Starting from the prior art described above, the subject of the present invention is a method that makes it possible to easily and inexpensively monitor the normal operation of a large number of spinning units of a ring spinning frame during the manufacture of spinning cups. To develop.

The above-mentioned problem corresponds to the present invention, during the rewinding process, the running yarn of the spinning cup is scanned by a sensor device formed as a yarn tension sensor, and the yarn obtained by this yarn tension sensor is obtained. The tension data is transferred for processing to the take-up unit computer of the relevant take-up unit, where it is above a predetermined boundary value, suggesting that the spinning cup is tightly wound. The tension data is interpreted as having a problem, in which case the yarn tension data is resolved by being associated with the spinning unit of the ring spinning machine that produced the corresponding spinning cup.

Advantageous embodiments of the invention are described in the dependent claims.

Unlike the prior art, in which the yarn data obtained by the yarn clearer discovers the defective state present in the spinning unit of a ring spinning machine, i.e. the production of unusable spinning cups, only after the fact, such a method. The method according to the present invention particularly has the advantage that the spinning unit having a problem in deployment can be identified at an early stage.

Based on the yarn tension data obtained by the yarn tension sensor, it is identified, for example, that an unfavorable deployment occurs in the spinning unit of a ring spinning machine relatively early. That is, for example, the ring traveler of one spinning unit has a wear condition that prompts the near replacement of the ring traveler.

Overall, based on the yarn tension data of the yarn tension sensor, the quality of operation of the spinning unit is about to gradually deteriorate, and the intervention of the operator in this spinning unit will be advantageous. That can be identified at an early stage.

In an advantageous embodiment, the state of the spinning unit of the ring spinning machine from which the corresponding spinning cup is manufactured is estimated from the yarn tension data of the spinning cup.

This means that: That is, if a relatively high yarn tension occurs during the spinning process of the spinning cup, this is because the spinning unit of the ring spinning machine from which the corresponding spinning cup was manufactured is no longer operating perfectly normally. That is, or means that the spinning unit is evaluated as a sign that it is about to manufacture a spinning cup with defects.

The presence of excessively high yarn tensions here, in particular, is advantageous, as the spinning unit in question is operating with a ring traveler that is already nearly worn, for example due to a long operating duration. It is a valid suggestion that it should be replaced with a new ring traveler.

An apparatus that implements the method according to the invention can advantageously characterize a spinning cup, which is always capable of associating the spinning cup with the spinning unit of the ring spinning machine that produced the spinning cup. Equipment is provided.

A plurality of sensor devices are further arranged in the winding unit of the automatic twill winding winder connected afterwards. Each of these sensor devices monitors the yarn in the spinning cup during the subsequent unwinding process.

These sensor devices are formed as yarn tension sensors, and each of them is connected to the winding unit computer of the corresponding winding unit. The take-up unit calculator is further connected to a device that detects which spinning unit of the ring spinning machine produced the corresponding spinning cup, based on the characterization of the spinning cup.

Such a device not only guarantees reliable monitoring of the spinning cup during the rewinding process, but also allows constant control of the state of the spinning unit of the ring spinning machine.

With the devices described above, for example, changes occurring in the spinning unit can be identified relatively early.

For example, a ring traveler whose wear state prompts replacement is obtained at an early stage based on the thread tension data obtained by the thread tension sensor. That is, it is possible to identify at an early stage that the quality of operation of the spinning unit is gradually deteriorating by the apparatus according to the present invention, and that the replacement of the ring traveler in this spinning unit will be advantageous. ..

In another advantageous embodiment, the take-up unit computer is connected to the central control unit of the automatic twill winder. This central control unit is itself connected to the central control equipment of the ring spinning frame. This central control device of a ring spinning frame is here equipped with a display device, for example, due to the ring traveler having a wear condition that prompts an upcoming replacement of the ring traveler, its normal operation. The spinning unit, which is about to lose its state, is displayed on this display device.

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

Schematic diagram of a combination of a ring spinning frame that creates a spinning cup and an automatic twill winding winder that rewinds the spinning cup into a twill-rolled package that is post-connected. Schematic front view of a spinning unit of a ring spinning machine with a ring traveler rotating on a spinning ring. Schematic side view of a winding unit of an automatic twill winding winder with a yarn tension sensor to monitor during the rewinding process of yarn drawn from a spinning cup. Winding Unit Front view of a winding unit of an automatic twill winder that is connected to a computer and has a yarn tension sensor that monitors the yarn tension of the yarn wound into the twill winding package during the rewinding process.

FIG. 1 shows a schematic perspective view of an embodiment of a fiber mechanical coupling in which the method according to the present invention or the apparatus according to the present invention is used.

That is, the spinning unit 8 of the ring spinning machine 1 manufactures a spinning cup 13 containing a relatively small amount of yarn material. The manufactured spun cup 13 is then conveyed to the take-up unit 16 of the automatic twill winder 2. The spun cup here is rewound into a large volume twill roll package 48. The yarn 56 drawn from the spinning cup 13 is now scanned during the rewinding process, especially by the yarn tension sensor 67. The yarn tension data obtained here provides suggestions regarding the operating state of the spinning unit 8 that manufactured the corresponding spinning cup 13.

As can be seen, the ring spinning machine 1 includes a large number of spinning units 8 having the same structure between the terminal portions A and B, and the spinning cups 13 are manufactured by these spinning units 8. The spinning units 8 are arranged adjacent to each other side by side on the long side of the two machines of the ring spinning machine 1.

The ring spinning frame 1 further includes a transport device 3. This is connected to the transport system 7 of the automatic twill winding winder 2 via a so-called repeater 6.

In this embodiment, the transport device 3 of the ring spinning machine 1 comprises, for example, a normally upright drive belt 9 that is laid around a large number of spinning units 8 of the ring spinning machine 1. This drive belt has a corresponding add-on (not shown) that feeds the transfer tray on the spinning machine side.

The spinning unit 8 of the ring spinning machine 1 is significantly outlined in FIG. 1, of which only the yarn feeder bobbin 30, the draft device 26 and the spinning spindle 28 are shown, and will be described in detail below based on FIG. Explained in.

As further shown in FIG. 1, the transfer device 3 of the ring spinning frame 1 usually has a long transfer section, so-called Cowemat sections 10 to 11, in the region on the long side of the machine, respectively. .. Here, these Cowemat sections 10 to 11 are connected to each other via a so-called Cowemat connection section 12 on the machine termination side.

On the machine termination side, which is opposite to the Cowemat connection section 12, the Cowemat sections 10 to 11 are connected to the repeater 6 via the transport sections 4 to 5.

In this embodiment, the spinning cup 13 manufactured by the spinning unit 8 of the ring spinning machine 1 and placed on the transport plate on the spinning machine side is placed on the transport plate 14 on the winder side by the repeater 6. Can be replaced. At the same time, the empty tube is taken out from the transport pan 14 on the winder side and returned to the transport pan on the spinning machine side.

Each transfer plate 14 on which the spinning cup 13 is placed is then transferred to the transfer system 7 of the automatic twill winding winder 2, and the transfer plate on the spinning machine side on which the empty tube is placed is a ring spinning frame. It is returned to the transport device 3 of the spinning machine 1.

However, here, for the sake of perfection, in connection with the ring spinning frame / automatic twill winding winder which is a fiber machine coupling, of course, the fiber machine transfer systems 3 and 7 are connected between the repeaters 6. It must be clearly stated that it is possible to connect directly without doing anything.

In such cases, the spinning cup 13 remains on its original transport pan during its transition from the ring spinning spinning system to the automatic twill winding winder transport system.

As is more apparent, FIG. 1 also shows the automatic twill winding winder 2 in a very schematic manner. That is, the figure of the automatic twill winding winder is substantially limited to the energy and operation unit 15, the winding unit 16, and the position display with respect to the transfer system 7 on the winding machine side.

Exact embodiments of the take-up unit 16 and the functions of the various devices thereof will be described in detail later with reference to FIG.

Similarly, the transport system 7 of the automatic twill winder 2 used to supply the spinning cup 13 to the take-up unit 16 of the automatic twill winder 2 or to take out an empty tube from the take-up unit has a large number. It has different sections.

The transport pan 14 on which the spinning cup 13 is delivered delivered via the transport section 4 is, for example, one in which the cup preparation station 20 is positioned via the cup supply section 18 extending over the machine length. Or it is sent to the area of a plurality of preparation sections 19.

The preparation section 19 is further connected to the so-called storage section 22 via the exit section 21, respectively. This storage section is alternately switched between traveling to the left and traveling to the right. The spinning cup 13 standing vertically on the transport pan 14 via the storage section 22 reaches the inlet region of the lateral transport section 23. This continues to the individual winding units 16 of the automatic twill winding winder 2. The lateral transport section 23 is connected to the winding tube return section 24 on its own end side. It is connected to the repeater 6 via an additional connection section.

For example, such a transfer system 7 of the automatic twill winding winder 2, which is described in detail in German Patent Application Publication No. 196366661 (DE19636661A1), further comprises a predetermined transfer dish 14 in the transfer system 7. It is equipped with a large-scale actuator device and sensor device that enable feeding.

In this embodiment, the spinning cup 13 or the transfer tray 14 is further provided with an information carrier (not shown), and based on this information carrier, the spinning unit 8 of the ring spinning frame 1 is used for each spinning. It can be confirmed whether the cup 13 is manufactured.

In the illustrated fiber mechanical coupling, the spinning cup 13 is replaced by the repeater 6 from the transport tray on the spinning machine side to the transport tray 14 on the winder side. Therefore, in this embodiment, the information carrier is, for example, for example. It is advantageous that it is fixed to the thread tube 29.

As further shown in FIG. 1, for example, the device 25 is arranged in the region of the transport section 4. This device enables the characterization of the spinning cup 13, which is always capable of associating the spinning cup 13 with the spinning unit 8 of the ring spinning machine 1 from which the spinning cup 13 was manufactured.

The device 25 is formed, for example, as a counting and writing device, which is, for example, a sensor (not shown) in the form of a light barrier that records the passage of a spinning cup 13 standing on a transport dish 14. It is equipped with. Since the spinning cups 13 pass through the sensors in the same order as they were duffed, the result of the count corresponds to each number of the spinning unit of the ring spinning machine.

Next, the number of the spinning unit of the ring spinning machine that created the corresponding spinning cup 13 by the connected or built-in writing device is an information carrier arranged in the yarn tube 29 of the spinning cup 13, for example, a memory. It is transmitted to the chip.

A reading device (not shown) to which the automatic twill winding winder 2 belongs is installed in the area of the winding unit 16. This reading device identifies the number of the ring spinning unit registered in the information carrier of the spinning cup 13 and transfers each to the winding unit computer 54 of the corresponding winding unit 16. The take-up unit computer 54 is normally connected to the central calculation unit 55 of the automatic twill winding winder 2 here.

However, it is advantageous when the transfer systems 3 and 7 of the fiber machines 1 and 2 are not connected via the repeater 6 as described above and instead have a common transfer system. It may also be advantageous to incorporate the information carrier formed as an electronic memory chip directly into the transport pan 14.

FIG. 2 schematically shows a part of the machine long side of a ring spinning machine 1 provided with two adjacent spinning units 8 arranged at intervals t.

As is clear, each spinning unit 8 has a draft device 26 and a driveable spinning spindle 28 that is rotatably supported around the spindle shaft 27. The yarn tube 29 of the spinning cup 13 can be fixed on the spindle shaft of the spinning spindle. During the spinning operation, for example, the blister yarn 31 generated from the yarn feeder bobbin 30 formed as a flyer bobbin (not shown in FIG. 2) is drafted to a desired yarn strength in the draft device 26.

That is, the blister yarn 31 that is stretched in the draft device 26 and exits from the draft device 26 in the region of the outlet side roller pairs 33 and 34 is supplied as a fiber composite to the rotating spinning spindle 28, where the fiber composite is used. Is rotated. Next, the yarn 35 produced here is wound around the yarn tube 29 as a spinning cup 13.

Here, between the draft device 26 and the spinning cup 13, the yarn 35 is rotatably supported on the yarn guide 36, the balloon limiting ring 37, and the spinning ring 38, during the spinning operation. Guided through a rotating ring traveler 39 towed by.

As is clear, the driveable spinning spindle 28, along with its own spindle housing 40, is fixed to the spindle rail 41. The spindle rail extends in the longitudinal direction of the ring spinning frame 1 and is fixedly fixed to the mechanical frame of the ring spinning frame 1 by itself.

The spinning spindle 28 has an underwinding region 42 and a warb 43 through which the spinning spindle 28 is a tangential belt that extends, rotates, and is driven over the machine length during the spinning operation. It is accelerated by 44 and rotated here.

The spinning ring 38 on which the ring traveler 39 rotates is installed in the ring rail 45 by a bearing device. It is movable vertically during the spinning operation, as indicated by the arrows, such as the rail 46 for the balloon limiting ring 37 or the rail 47 for the yarn guide 36 described above.

FIG. 3 is a side view schematically showing a winding unit 16 of the automatic twill winding winder 2. On such a take-up unit 16, a spinning cup 13 pre-made on the spinning unit 8 of the ring spinning machine 1, which has a relatively small number of threads, is wound around a large volume twill winding package 48. returned. After its completion, the twill-wound package is transferred to the twill-wound package transfer device 49 extending over the machine length using a service device (not shown), and the package transfer station or the like located on the machine termination side. Will be transported to.

In order to supply a new spun cup 13 to the take-up unit 16 or to take out the unwound empty tube from the take-up unit, such an automatic twill winding winder 2 is further conveyed as described above. It is equipped with system 7. In this transfer system, the spinning cup 13 or the empty tube circulates on the transfer plate 14.

Of such transfer systems 7, only the cup supply section 18, the reversibly driveable storage section 22, the lateral transfer section 23 connected to the take-up unit 16, and the winding tube return section 24 are shown in FIG. It is shown.

The spinning unit 16 of such an automatic twill winding winder 2 is usually further equipped with various devices that enable the normal operation of such a winding unit 16 during the rewinding process, respectively.

One such device is, for example, a take-up device with a reference number 50, which has a package frame 52 movably supported around a swivel shaft 51. It is advantageously ascending or descending as prescribed by a torque generator (not shown).

During the normal take-up process, the twill winding package 48 is located on its surface, on the package drive roller 53, as shown, and is rotated by the package drive roller by frictional contact. The package drive roller 53 is connected, for example, to an individual drive unit in the form of a motor. This individual drive unit is connected to the take-up unit computer 54 via a control line.

A yarn traverse device 57 is provided for twilling during the winding process of the yarn 56 wound into the twill winding package 48. Such a thread traverse device 57, which is shown only schematically in FIG. 3 and is described in relative detail in, for example, German Patent Application Publication No. 102004052564 (DE102004052564A1), comprises a finger thread guide 58. Have. It is driven by an electric drive unit 59 to reciprocate the thread 56 between the two end faces of the twill winding package 48.

Each take-up unit 16 is further rotatably supported to which a negative pressure can be applied, like a suction nozzle 60 for operating a so-called needle thread, which is rotatably supported. The gripper pipe 61 for operating the bobbin thread and the pneumatic thread splicing device 62 are provided. Thereby, if necessary, the thread end portion of the needle thread and the thread end portion of the bobbin thread can be connected like a single thread.

Such a take-up unit 16 is usually, and often more often, provided with another device, such as a bobbin thread sensor 63, a thread tensioner 64, an electronic thread clearer 66, a thread cutting device 65, a paraffin processing device. 68 and the thread tension sensor 67. These devices are usually connected to the take-up unit computer 54 via control and signal lines.

The electronic yarn clearer 66 constantly monitors the quality of the running yarn 56 here. That is, the thread clearer 66 continuously inspects the thread 56 passing through itself, where it identifies a serious thread defect. This is, for example, thread cutting, double thread or thin and thick areas.

The running yarn 56 is further and often scanned by the yarn tension sensor 67 during the unwinding process. Such a thread tension sensor 67 is known and is described in relatively detail in, for example, German Patent Application Publication No. 4129803 (DE4129803A1) or German Patent Application Publication No. 1020111112012 (DE1020111112012A1). ..

Next, a known method of operation of the thread tension sensor 67 arranged in the region of the winding unit 16 of the automatic twill winding winder 2 of this kind is shown and described with reference to FIG.

FIG. 4 shows, schematically, in the front view, the winding unit 16 of the automatic twill winding winder 2, which is the connection portion with the winding unit computer 54 and the thread tensioner 64, and the thread tension. It is equipped with a sensor 67, a thread cutting device 65, and an alarm device 69.

The thread tensioner 64, which is only remarkably schematically shown in FIG. 4, is known in itself and is described in detail, for example, in German Patent Application Publication No. 4130301 (DE4130301A1).

An electrically drive-controllable thread-cutting device 65 has also long been a prior art in textile mechanical structures.

In this embodiment, for example, a take-up including a yarn tension target value generator 70, a yarn tension boundary value generator 71, a comparator 72, a regulator 73, and a time element 74 incorporated in the comparator 72, for example. The unit computer 54 is connected to the thread tension sensor 67 via the signal line 75, is connected to the thread tensioner 64 via the adjustment line 76, and is connected to the thread cutting device 65 via the adjustment line 77. And is connected to the alarm device 69 via the signal line 78.

As further shown in FIG. 4, the comparator 72 is supplied with the thread tension target value _FZK Sol from the thread tension target value generator 70 via the signal line 79, and the boundary value is generated via the signal line 80. The boundary value TG is supplied from the vessel 71.

Through the boundary value generator 71, here, advantageously, the period of error ZS should elapse before the comparator 72 triggers the thread cutting device 65 and the alarm device 69 via the regulator 73. Is also adjustable.

Here, in the winding unit 16 of the automatic twill winding winder 2 provided with the thread tension sensor 67 connected in this way, the following process usually elapses during the rewinding process.

The yarn 56 unwound from the spinning cup 13 should be wound around the twill winding package 48 with as constant yarn tension as possible.

For this reason, the yarn tension is monitored online by the yarn tension sensor 67 during the overall take-up process.

The actual thread tension FZK _ist obtained by the thread tension sensor 67 is compared with the thread tension target value _FZK Mall set by the thread tension target value generator 70 in the comparator 72.

On the outlet side, the comparator 72 is connected to the regulator 73. By this regulator 73, the braking disc of the thread tensioner 64 is always pressed against the running thread 56 with contact pressure, thereby ensuring that the thread 56 always has a constant thread tension.

The obtained yarn tension actual value FZK _ist is further compared in the comparator 72 with the boundary value TG set by the boundary value generator 71.

When the comparator 72 confirms that the actual yarn tension value FZK _ist has reached or exceeded the ZS, the boundary value TG, or the boundary value TG for a predetermined period at the time of its own comparison, the yarn obtained by the yarn tension sensor 67 is obtained. The actual tension value, that is, the yarn tension data obtained by the yarn tension sensor 67 is processed by the winding unit computer 54 of the winding unit 16 of the automatic twill winding winder 2 as follows. That is, the yarn tension data is processed so that the state of the spinning unit 8 of the ring spinning machine 1 that manufactured the spinning cup 13 can be inferred.

That is, during the unwinding process of the spinning cup 13, if a significant increase in yarn tension occurs unexpectedly, which is usually attributed to the winding of the spinning cup 13 being a little too stiff, this is quickly applicable. It is evaluated as a sign that the spinning unit 8 of the ring spinning frame 1 that manufactured the spinning cup 13 is about to lose its normal operating state.

The tightly wound spinning cup 13 is in particular a wear condition in which the ring traveler 39 of the spinning unit 8 from which the corresponding spinning cup 13 was manufactured may cause the spinning unit 8 to produce an unusable spinning cup in the near future. It is advantageously evaluated as a suggestion that it is advantageous to replace the old ring traveler 39 with a new ring traveler 39.

Claims (6)

A method of monitoring the normal operation of a large number of spinning units (8) of a ring spinning machine (1) during the manufacture of a spinning cup (13).
It is possible to characterize the spinning cup (13), which can always be associated with the spinning cup (13) and the spinning unit (8) of the ring spinning machine (1) that manufactured the spinning cup (13). Equipment (25) and
A sensor device that is located in the take-up unit (16) of the post-connected automatic twill winder (2) and constantly monitors the yarn (56) of the spinning cup (13) during the subsequent rewinding process. In the way it is done by
The running yarn (56) of the spinning cup (13) is scanned by a sensor device formed as a yarn tension sensor (67).
The yarn tension data obtained by the yarn tension sensor (67) is transferred to the winding unit computer (54) of the corresponding winding unit (16) for processing.
Thread tension data above a given boundary value, suggesting that the spinning cup (13) is tightly wound, is interpreted as having a problem.
In that case, the yarn tension data is associated with the spinning unit (8) of the ring spinning machine (1) that created the corresponding spinning cup (13).
From the yarn tension data of the spinning cup (13), the state of the spinning unit (8) of the ring spinning machine (1) that manufactured the spinning cup (13) is estimated .
A method of monitoring the normal operation of a large number of spinning units (8) of a ring spinning machine (1) during the manufacture of a spinning cup (13). Because the ring traveler (39) of the spinning unit (8) of the ring spinning machine (1) that produced the corresponding spinning cup (13) has, for example, relatively high wear, the spinning unit (1). The presence of high yarn tension is assessed as a sign that 8) is about to produce a low value spinning cup (13) and should therefore be replaced with a new ring traveler (39). The method according to claim 1 . An apparatus for carrying out the method according to claim 1.
It enables the characterization of the spinning cup (13), which can always be associated with the spinning cup (13) and the spinning unit (8) of the ring spinning machine (1) that manufactured the spinning cup (13). Equipment (25) and
It is located in the take-up unit (16) of the post-connected automatic twill winder (2) and always keeps the running yarn (56) of the spinning cup (13) during the subsequent rewinding process. Sensor equipment to monitor and
Equipped with
The sensor device for monitoring the running yarn (56) of the spinning cup (13) is formed as a yarn tension sensor (67), and the winding unit of the corresponding winding unit (16). It is connected to the computer (54) and
In the take-up unit computer (54), the spinning unit (8) of the ring spinning machine (1) in which the yarn tension data obtained by the yarn tension sensor (67) created the corresponding spinning cup (13). It is configured so that it can be associated with
From the yarn tension data of the spinning cup (13), the state of the spinning unit (8) of the ring spinning machine (1) that manufactured the spinning cup (13) is estimated.
A device for carrying out the method according to claim 1. The take-up unit computer (54) is connected to the central control unit (55) of the automatic twill winding winder (2), and the central control unit (55) itself is the ring spinning frame (1). The device according to claim 3 , which is connected to the central control device (17) of the above. The central control device (17) of the ring spinning frame (1) is provided with a display device (32), and the display device (32) is about to lose its normal operation mode. The device of claim 4 , wherein the unit (8) is displayed. The display device (32) is configured such that its own ring traveler (39) displays a spinning unit (8) having a wear condition that prompts the ring traveler (39) to be replaced in the near future. , The apparatus according to claim 5 .

Images