DE2527641A1 - METHOD OF OPERATING A HIKING DEVICE WITH A THREAD TURNING DEVICE AND TEXTILE YARN SPINNING ARRANGEMENT FOR PERFORMING THE METHOD - Google Patents

Description

Method for operating a hiking device with a Thread twisting device and textile yarn spinning arrangement for carrying out the process

The invention relates to a method for operating a hiking device with a device for turning broken stretched or warped yarn on drafting devices of a textile yarn spinning machine, which has a variety of drafting devices and has a plurality of yarn run stoppers each arranged on an associated drafting device, as well as a textile yarn spinning arrangement to carry out the process, with a yarn spinning machine that has a large number of drafting devices, a corresponding number of thread run stoppers, and with a traveling device that drives along the machine and one Has thread monitor device and a thread threading device, and relates to the control of the thread threading device.

A previous suggestion to improve the efficiency of a textile yarn mill has been to re-tying or stop twisting a broken yarn or thread

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To use human power, but to have this work carried out by a machine. Such machines are called automatic Fadenandreh- or -anknüpfvorrichtungen known and work in many different ways. One at The difficulty encountered with such devices is their inability to move between jobs at the To distinguish between yarn spinning machines on which the thread connection was successful and those on which it was unsuccessful, or identify such jobs. Practical attempts in view of the aforementioned difficulty with devices of the type described and shown in earlier patents have shown that attempts to Broken yarn or thread is not re-tied evenly run successfully.

The previously used in connection with certain turning devices S expensive arrangements worked in such a way that along a worn textile yarn spinning machine every work site was found where the normal yarn spinning process or the normal yarn insulation was interrupted. With the discovery of such a job, a work cycle was established triggered, with which the restart of yarn production should be achieved. A thread tie was attempted and at the end of this attempt, the cranking device moved away from the job in question without Consideration of whether the how the thread is tied or Successful or unsuccessful. In addition, the cranking device did not respond to a repeated one in any way Interruption of yarn formation, which could occur practically immediately after a successful attempt at starting the yarn. Given In view of these difficulties, it is understandable that the number of unsuccessful attempts to twist the thread can be quite large could.

According to another suggestion to improve performance the use of thread run stoppers was provided by textile yarn spinning mills. These were on a textile yarn spinning machine arranged and interrupted the delivery of

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Roving to the drafting equipment if it was found that the formation of refined or warped yarns was interrupted was. Even if the work processes according to this proposal are not for restarting the yarn formation or for tying it up broken yarn, the interruption in the delivery of roving to the textile yarn spinning machine provided protection against any other possible risk of damage and enabled a mitigation or the elimination of the Need to employ maintenance personnel. This saving in manpower, however, has been at the expense of some Production losses reached.

The object of the invention is to create a method of the type described at the outset, which the provided Requirements met in a particularly advantageous manner.

The subject of the invention is a method for operating a hiking device with a device for turning broken stretched or drawn yarn on the drafting devices of a textile yarn spinning machine, which at a number of workplaces a large number of drafting systems, which usually have a corresponding one A large number of rovings are supplied and which normally deliver a corresponding large number of drawn yarns, and has a plurality of yarn run stoppers, each arranged on an associated drafting device, which, as required between a withdrawn release position at a distance of the associated roving and a thread run stop position are adjustable, in which they attack the associated roving and hold this and thereby the continuation of the held Interrupt the roving in the associated drafting system.

To reduce the number of unsuccessful attempts to twist the thread to achieve, the subject of the invention is now improved in terms of the operation of the thread twisting device. According to the invention, this improvement consists in the fact that the hiking device is located in the areas forming the workplaces Drafting systems is passed by and at the same time

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Sonicate the taking of the release position through thread run stoppers are scanned and electrical charges are detected by electrostatic means, which are normally are present at workplaces for the warping or stretching of yarn,

- that the drive past a job where the thread run stopper is in the free position, is signaled electrically,

- That the passing of a work place, at which the warping of the yarn takes place normally, signals electrically will,

- that between the signaled drive past a job, at which the associated thread run stopper is in the release position and yarn is being formed, which are signaled Driving past a job where the

associated thread run stopper is in the release position and the yarn formation is interrupted, and driving past a job at which the associated thread run stopper indsr thread run stop position, a distinction is made,

- That the traveling device passes along the textile machine is continued when signaled drive past a work site at which yarn is formed, and drive past at a job at which the associated thread run stopper is in the thread run stop position, determined will,

- and that the journey of the hiking device is interrupted and the thread turning device for stretched yarn is in operation is set when a signaled drive past is detected at a job at which the associated The thread run stopper is in the release position and the Yarn formation has been interrupted.

The invention also relates to a textile yarn spinning arrangement to carry out the method according to the invention, with a yarn spinning machine that has a plurality of on one Has a series of work stations arranged drafting systems, which normally have a corresponding number of rovings

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is fed and the a corresponding variety of stretched Delivering yarns, a multiplicity of yarn travel stoppers each arranged on an associated drafting system, the, if necessary, between a withdrawn release position at a distance from an associated roving and a Thread running stop position are adjustable in which they are attached to the Attack the roving and hold it tight and thereby the continuation of the held roving into the associated drafting system interrupt, and with a traveling device that drives along the machine and a thread monitor device as well having a thread turning device with which the Can bring yarn or thread formation back into motion.

The object of the invention is achieved in such a spinning arrangement that in it as an alternative to Hiking devices, which make the thread tying, incorporated certain features of the thread run stopper according to older proposals and at the same time other special scanning devices for interacting with the various elements of the unit are provided.

In those older arrangements proposed in an effort to reduce the number of unsuccessful attempts to twist the thread, relied on relatively expensive photoelectric or optical scanning devices. Difficulties arose with these mainly due to certain unavoidable limitations / aln optical systems used and by adapting them to the conditions in a textile company. To achieve reliable photoelectric scanning, Due to the requirements with regard to depth of field and focus, the need for very precise alignment and Attachment of the interacting elements.

According to a further feature of the invention, the position of thread run stoppers by means of an active sound scanning device detected during the detection of the presence

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or the absence of drawn or drawn yarns, as they are normally formed on the drafting devices of the textile machine by reacting to electrostatic charges that occur during normal yarn formation. This avoids difficulties encountered with certain photoelectric or optical scanning devices. By distinguishing between different signaled ones States that indicate the operating status of a specific work site at which the yarn is stretched are shown in the The arrangement according to the invention achieves a particularly useful control for a hiking device of the type described.

In an advantageous embodiment, a generic textile yarn spinning arrangement according to the invention is distinguished in that

- An active sound scanning device, which is arranged on the traveling device and carried along by this along the machine is, driving past a drafting system that forms a job, on which the associated thread run stopper in is in the release position, signaled electrically,

- That a thread monitor for stretched yarn, which is arranged on the traveling device and from this along the machine is carried along, to electrostatic charges that normally occur on drafting systems when drawing or stretching of yarn are present, responds electrically to drive past a drafting system on which the yarn is normally formed to signal

- That a with the sound scanning device and the thread monitor electrically connected logic circuit between signaled Driving past a work site at which the associated thread run stopper is in the free position and yarn is formed, signaled drive past a work site at which the associated thread run stopper in the Release position is and the yarn formation was interrupted, and driving past a job where the associated thread run stopper is in the thread run stop position, distinguishes,

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- And that a control device on the logic circuit hit position of a signaled drive past a work place at which the associated thread run stopper is in the release position and the yarn formation was interrupted, responds by the fact that it stops the travel of the hiking device along the machine and the Fadenandrehvorrichtung sets in action, and that it is based on the determination made by the logic circuit one of the other passers-by responds by not interrupting the travel of the hiking device along the machine .

Advantageous embodiments of the invention are characterized in the following description and in the subclaims.

The invention is explained below with the aid of schematic drawings of several exemplary embodiments with further details explained. In the drawing shows:

Fig. 1 is a front view, partially cut away, of part of a spinning arrangement in an embodiment according to the invention,

Figure 2 is a perspective view of certain scanning devices and textile yarn spinning machine elements used in the spinning arrangement of the invention are,

Fig. 3 is a block diagram of certain functions of a Control device according to the invention,

Fig. 4 is an electrical circuit diagram of part of an electrical circuit arrangement shown in the Spinning assembly according to the invention is used, and

5 shows a front view, similar to FIG. 1, of a spinning arrangement in a further embodiment according to FIG Invention.

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The invention relates to certain inventions that appear in earlier patents including U.S. Patents 3,486,319, 3,623,310, 3,659,409, 3,726,072, and 3,754,992. Reference is made to these patents insofar as the suggestions contained therein for a full understanding of the Invention are necessary.

In Fig. 1, designated in its entirety by 10 textile yarn spinning machine is shown, which has a plurality of in their entirety each with 11 designated drafting devices having. Each of the drafting devices 11 is in a known manner from a number of pairs of rollers 12, 13 and 14 (Fig. 2) composed, to which a roving S is normally fed and which is normally a stretched or warped one Deliver Yarn. The spinning machine 10 has a plurality of drafting devices arranged at a number of work stations 11 so that they can be supplied with a corresponding plurality of rovings S and the drafting units 11 a corresponding one Variety of drawn or drawn yarns or threads Y can deliver.

To interact with the spinning machine 10, a large number of thread run stoppers 16 are provided. Each of the thread run stoppers 16 is arranged near a corresponding, associated drafting system 11 and, if necessary, between a withdrawn release position at a distance from the associated Roving S (Fig. 1 and 2) and a thread stop position adjustable, in which it attacks the associated roving S and holds it. In the thread stop position of the thread run stop 16, the continuation of the roving S into the associated drafting system 11 is interrupted. This will shape a stretched or warped yarn Y or the resumption of the formation of stretched yarn Y or thread tying locked out.

Along the textile yarn spinning machine 10 a traveling device designated in its entirety by 20 can be moved, the one

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has not shown in detail in the drawing device, with which on a drafting system, on which no stretched yarn Y is present, restart the formation of stretched yarn or re-tie a broken thread leaves. In the example shown in Fig. 1, the traveling device 20 is a pneumatic traveling cleaning device that look at one about the textile or spinning machine 10 yourself extending guide rail 21 is supported and a blow cleaning member 22 and a suction cleaning member 24 carries the one side of the traveling cleaning device 20 hanging down. The device for restarting the yarn formation or the Thread twisting device is accommodated in a housing 25 arranged between the cleaning members 22 and 24, which on a lower auxiliary guide rail 26, which see along of the lower part of the spinning machine 10 extends, is additionally supported. It stands to reason that the exact training and Operation of the thread twisting device in accordance with a number of known and available prior art Suggestions may be chosen including U.S. Patent 3,486,319 and prior patents cited therein. For this reason A more detailed description and illustration in this context is dispensed with.

According to the invention, an active sound scanning device is on the hiking device 20 attached, which is carried along by the hiking device 20 along the spinning machine 10 and driving past a Drafting system 11, on which the associated thread run stopper 16 in is in the release position, electrical signaling. When shown For example, the active sound scanning device has an ultrasound transmitter 30 and an ultrasound receiver 31 on. The ultrasonic transmitter 30 transmits in a relatively sharply focused beam of ultrasonic energy and directs it from the traveling device 20 against the spinning machine 10. The active sound scanning device is preferably arranged in the housing 25 so that the ultrasonic energy beam in a That can be sent out on an essentially level

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flat surface of the thread run stopper 16 is at right angles. If the beam of sound energy is reflected by a stopper 16 located in the release position (FIG. 2) ", is obtained the receiver 31 sound energy. With one the thread run stop position occupying thread run stopper 16 meets the sharply bundled Do not hit the beam of sound energy on the thread stopper 16 and is not reflected to the receiver 31. Accordingly, the active sound scanning device does not become electrical Signal generated when it drives past a drafting system 11, on which the associated thread run stopper 16 is actuated and into the The thread run stop position has been adjusted. Under an "active" Scanning device, in the context of this description, are understood in particular those arrangements in which a signal or an energy ray is generated and sent out and the reflection or echo of this energy ray is received and is scanned. It should also be noted that the term "sound" scanner means a scanner involves utilizing vibrational energy close to frequencies sensed by the human ear, although Frequencies in the range referred to as the ultrasonic range and frequencies above the hearing limit in humans are preferred will. These arrangements differ significantly from scanning devices that work with light beams and as Photoelectric scanning devices can be designated, since experience has shown that it is with photoelectric Scanning devices in connection with the depth of field and the focus of optical systems encounter difficulties that does not occur when using active sound scanning devices.

A thread monitor designated in its entirety by 32 for stretched yarn is also attached to the hiking device 20, which is carried along by the traveling device 20 along the spinning machine 10 and responds to electrostatic charges, which are normally present on drafting systems during yarn drawing. The one that responds to electrostatic charges

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Thread monitor 32 generated when driving past a drafting system 11 on which the formation of drawn yarn Y proceeds normally, an electric signal. The thread monitor 32 is in the housing 25 attached so that it is each close to the path in which stretched yarns Y between the delivery rollers the drafting systems 11 and the coils on which they are wound move.

The thread monitor 32 has further details as follows described in more detail, an electrically floating sensor rod 34 and a circuit arrangement shown in FIG with which it responds to fluctuations in the electrostatic charges near the sensor rod 34. That general interaction between the electrostatic thread monitor 32 and the active sound scanning device results from the block diagram in Fig. 3> according to which from the thread monitor 32 and electrical signals generated by the sound scanning device in cooperation with one another are controlled Trigger a function such as that shown in FIGS. 22 and 23 of US Pat. No. 3,486,319 and there described device is carried out. As described in more detail below, the controlled function can also control the actuation of a thread run lock, essentially using a device such as, for example and is described in Figure 11 of U.S. Patent No. 3,726,072.

A more precise understanding of the way the thread monitor works 32 and the sound scanning device cooperate with one another, results from the circuit diagram shown in FIG Electrical signals corresponding to electrical charges are transmitted via field effect and other transistors as well as via these associated resistors and capacitors as an electrical output signal to a bistable multivibrator or Flip-flop 35 supplied, which together with a switching element forms a logic circuit. This is electric with

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the receiver 31 of the active sound scanning device and connected to the electrostatic thread monitor 32 in order to distinguish between three possible states, namely Firstly, the signaled drive past a job at which the associated thread run stopper 16 in the Release position is and yarn is stretched, -second, the signaled drive past a job at which the thread run stopper 16 is in the release position and the yarn formation has been interrupted, for example in the event of a "thread breakage" - and thirdly, when passing one Job at which the thread run stopper 16 the thread run stop position occupies.

The logic circuit is preferably designed so that it emits an output signal only in the cases that the correspond to the second of the listed conditions. The reflection of ultrasonic energy from a thread stopper 16 to the Receiver 31 (Fig. 4) generates an electrical signal which, when passed through amplifier 38, provides excitation causes a coil 39 of a relay. The relay coil 39 closes an associated switch 40 when energized, Via which the multivibrator 35 and the switching element 36 an electrical signal is fed. The multivibrator 35 is in this way put into a first switching state and ready, a signal via the electrostatic thread monitor 32 to be obtained if normal stretched yarn formation takes place. In this case an electrical signal arrives this by applying electrostatic to the sensor rod 34 Charges is generated, to the multivibrator 35 »converts it to another state and lifts the switching element the signal that would otherwise be passed through the multivibrator 35. As a switching element 36, an AND element is used which only emits an output signal if it has two signals.

If the normal formation of drawn yarn has been interrupted, no signal is sent from the thread monitor 32 to the multivibrator 35 »see above

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that on the switching element 36 two signals remain and one Output signal is emitted. This output signal can then can be used to operate the control devices mentioned above.

If the corresponding thread run stopper 16 has been pivoted into the actuation or thread run stop position, it becomes the receiver 31 no sound energy is reflected, the relay switches 40 are not closed, and on the multivibrator 35 or switching element 36 no signals are applied.

The use of the electrostatic thread monitor 32 for Checking the proper thread knotting before releasing the traveling device 20 for further travel along the spinning machine 10 is possible within the scope of the invention. In such an arrangement, the control for the thread tying device would designed to be used upon completion of a thread tucking cycle the thread monitor 32 and the sound scanning device as well as the logic circuit resets. By resetting of the scanning devices, and while the thread run stopper 16 remains in the release position, the presence would be of electrostatic charges following successful thread attachment prevent a signal from passing through the logic circuit goes through, and the traveling device 20 would be released for further travel along the spinning machine 10. In the event of an unsuccessful attempt at tying the thread, there would be no electrostatic signals indicating the course of thread stretching Loads are present, and a subsequent working cycle of the thread tying device could be initiated.

It is provided that the control arrangement after one or more repetitions of the working cycle of the thread tightening device in the case of persistent unsuccessful attempts to link an actuating device 41 for the interruption of the thread A signal is supplied to the yarn delivery. The actuating device 41 is to supply compressed air via a line 42 with a fan part of the traveling cleaning device 20 is connected. In

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In this context, reference is made to the one already mentioned above See U.S. Patent 3,726,072. In this way, the thread run stopper 16 can be "bombarded" with air and thereby into the Swivel the thread run stop position. By switching the Thread stopper 16 in the thread stop position would ensures that the work station corresponding to the drafting system in question is in the third of those described above different states falls. No further attempts at tying the thread were then made at this point of work until the difficulty has been resolved by the machine maintenance personnel, the cause of the unsuccessful intervention of the Wandergerätes 20 was. In this way, according to the invention, the number of unsuccessful attempts to tie the thread is determined decreased.

The features of the invention are also advantageously applicable to hiking devices of a different type from the hiking device 20 described. Fig. 5 shows such a different, for example, embodiment of a hiking device, which is designated in its entirety with 20 *. Components of the arrangement shown in FIG. 5 that correspond to the exemplary embodiment according to FIGS. 1 to 4 are denoted by the same reference numerals but with a prime. The traveling device 20 · is supported on an upper and a lower guide rail 21 · and 26 * and carries an active sound scanning device with a transmitter 30 * and a receiver 31 * as well as a thread monitor 32 * for stretched or drawn yarn Y ¹ . In addition, the hiking device 20 * is provided with a corresponding device 41 *, with which the thread run stoppers 16 * can be operated remotely according to the invention as required.

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Claims (7)

EXPECTATIONS 1 . ^x Method for operating a traveling device with a device for twisting broken, stretched or drawn yarn on drafting units of a textile yarn spinning machine, which at a number of work stations has a large number of drafting units to which a corresponding large number of roving yarns are normally fed and which normally have a corresponding large number of deliver stretched yarns, and has a large number of thread run stoppers each arranged on an associated drafting device, which, if necessary, can be adjusted between a retracted release position at a distance from the associated roving and a thread run stop position in which they attack the associated roving and hold it and thereby the continued running of the roving Interrupt roving in the associated drafting system, characterized in that - the hiking device at the drafting devices forming the workplaces is passed and at the same time by sonication the assumption of the release position by thread run stopper are scanned and electrical charges are detected, which are normally found in workplaces are present during the warping or stretching of yarn, - that the drive past a work site at which the thread run stopper is in the release position, is signaled electrically, - That the passing of a work place, at which the warping of the yarn takes place normally, signals electrically will, - that between the signaled drive past a job, at which the associated thread run stopper is in the release position and yarn is being formed, which are signaled / 2 π π π / η π ι 46 718 Driving past a job where the associated The thread run stopper is in the release position and the Yarn formation is interrupted, and driving past a work site at which the associated thread run stopper in the thread run stop position is distinguished, - That the traveling device passes along the textile machine is continued when signaled drive past a work site at which yarn is formed, and Driving past a work site at which the associated thread run stopper is in the thread run stop position, to be determined - and that the journey of the hiking device is interrupted and the thread turning device for stretched yarn is in operation is set when a signaled drive past is detected at a job at which the associated The thread run stopper is in the release position and the Yarn formation has been interrupted. 2. The method according to claim 1, characterized in that that the successful tying of the thread is signaled electrically, and that if the thread is unsuccessful Thread attachment the thread twisting device is put into action again. 3. The method according to claim 2, characterized in that g e k e η η, that if the thread is unsuccessful, an actuating air flow is sent out and against the associated one Yarn stopper is directed to this, if necessary, from the release position into the yarn run stop position blow. 4. textile yarn spinning arrangement for performing the method according to claim 1, with a yarn spinning machine which has a plurality of arranged at a number of work stations drafting systems, which normally have a corresponding A large number of rovings are supplied and which deliver a corresponding large number of drawn yarns, F. 0 P R ft R / Π Π - / - 46 718 a plurality of yarn run stoppers, each arranged on an associated drafting system, which if necessary between a withdrawn release position at a distance of one associated roving and a thread stop position adjustable in which they attack the associated roving and hold onto it and thereby the continuation of the roving Interrupt roving in the associated drafting system, and with a traveling device that drives along the machine and a thread monitor device and a thread twisting device, with which you can see on a drafting system on which there is no stretched thread that can restart the thread or thread formation, thereby g e k e η η, that - an active sound scanning device (ultrasonic transmitter 30, Ultrasonic receiver 31) * arranged on the hiking device (20) is and is carried along by this along the machine (10), passing a job forming a job Drafting system (11) on which the associated thread run stopper (16) is in the release position, signaled electrically, - That the thread monitor (32) for stretched yarn (Y), which is arranged on the traveling device (20) and from this along the Machine (10) is carried along to electrostatic charges that normally occur on drafting devices (11) when Warping or stretching of yarn is present, responds to passing a drafting device (11) on which the yarn is formed runs normally, to signal electrically, - That one with the sound scanning device (30,31) and the Thread monitor (32) electrically connected logic circuit (multivibrator 35, switching element 36) between signaled drive past a work station (11) at which the associated thread run stopper (16) is in the release position stands and yarn (Y) is formed, signaled drive past a work station (11) at which the associated Yarn stopper (16) is in the release position and the yarn formation has been interrupted, and driving past one Job (11) at which the associated thread run stopper (16) is in the thread run stop position, distinguishes μ η q R η π / π r f ι s - <- 46 718 - And that a control device (41) on the logic circuit (35,36) struck plague of a signaled drive past a work place (11) the associated thread run stopper (16) in the release position stands and the yarn formation has been interrupted, responds in that it moves along the travel of the hiking device (20) the machine (10) stops and sets the thread twisting device in action, and that it is based on that of the logic circuit (35,36) appeals to one of the other passers-by by the fact that it is the drive of the Traveling device (20) along the machine (10) does not interrupt. 5. textile yarn spinning arrangement according to claim 4, characterized GEK 2 η η ζ eiehnet that the combination circuit (35,36) is reset after completion of the activity of the Fadenandrehvorrichtung to the successful thread attachment observed. 6. textile yarn spinning arrangement according to claim 4, characterized gek ennz eichne t that the traveling device (20) is a movable pneumatic cleaning device. 7. textile yarn spinning arrangement according to claim 4, characterized in that the actuating device (41) for thread run stopper (16) an air flow against one Yarn stopper (16) aligns and thereby the same as needed blows from the release position into the thread run stop position, operationally connected to the control device is and can be switched on through this to send out an actuating air flow if an unsuccessful attempt to Thread attachment is established. 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