CS241603B1 - Apparatus for communication of a spindless spinning unit with movable servicing apparatus - Google Patents

Abstract

The communication system is intended for spinning stations of open-end spinning machines, on which the spinning stations cooperate with a mobile servicing means, which moves around the spinning machine, for the purpose of eliminating non-stationary states, for example in the event of a yarn break, and when a full package of drawn-off yarn is obtained and for the purpose of a preventive cleaning of the spinning station. The communication system is electronic and contains the necessary transmitters and receivers and also indicator elements and is advantageously combined in a compact constructional unit in strip form which is fastened removably to the spinning station. The present invention makes it possible to provide the spinning stations with the communication system at a later date in the event of a modernisation of the spinning machine.

Description

The invention relates to a device for communicating an open-end spinning unit to a mobile service unit. More specifically, it concerns equipment,. which comprises an electromagnetic spinning demand transmitter that is connected to the yarn break sensor electrical circuit.

When a yarn breakage occurs on any of the many open-end spinning units of an open-end spinning machine, the respective yarn breaker sensor engages an electromagnetic transmitter circuit that begins to transmit a spinning request in the form of a magnetic signal. If the service unit then detects this requirement during its supervisory movement along the machine, it automatically stops at the position of the spinning unit and performs the appropriate re-spinning operations. The service unit is usually adapted to repeat these operations several times and if the last re-spinning attempt is unsuccessful because, for example, in the spinning unit, the service unit caused an irremovable failure that caused the yarn breakage, leaves the spinning unit and continues its supervisory movement along the machine. . However, the unsuccessfully operated spinning unit transmits the spinning request further while simultaneously informing the operating personnel. If the service personnel fail to arrive in time to eliminate the cause of the yarn breakage, the service unit again detects the spinning unit spinning request during repeated passage and, according to its program, completely unnecessarily performs any unsuccessful spinning attempts while other operators requiring spinning units. they remain unnoticed for that time with a corresponding loss. Sensors sensitive to magnetic signals

In addition, the operating requirements 241 603 installed on the service unit can readily detect interfering magnetic fields due to the induction of machine electrical equipment or other simultaneous requests for differentiated service operations. This can, of course, result in malfunctions in the operation of the operating unit.

The purpose of the invention is therefore to improve the introduction characterized by the device using a measure which makes the device simple mentioned drawbacks and ^to ter ^é zloven amortized cost ^ o ^b services ^f Nym ^p ersonálem easily 'cancelable designation spinning unit with which the remote operation unit, particularly piecing unsuccessful . This marking must be visible to the operating personnel. ^{PURPOSE characterized} to ^L Cutting's D ^& le ^yl as ^s t this ^e ZDO ^to she ^l both stages ^d o ^p at ^of en ^{i, k} are exercised ^enables a more sending ^p Oza ^d and ^k u exchange navjecí CIV ^alkyl, such as generically differentiated service operations associated with deliberately inducing a yarn breakage and removing the yarn breakage - with re-spinning - prior to replacing the take-up reel without disturbing or overlapping the spun requirement.

According to the invention, this object is achieved by connecting an electromagnetic spinning request transmitter via a yarn break sensor switching element to a three-phase bridge rectified voltage source at a frequency equal to six times the line voltage frequency, the output of the memory member being connected to the control input of the electromagnetic transmitter. sensitive to an external signal, the output of which is connected to the yarn break indicator.

In the event that an electromagnetic take-up reel request transmitter is also connected to the yarn break-sensor sensor circuit, the invention assumes that the second take-up of the take-up reel request solenoid transmitter is connected to an AC voltage source at a frequency equal to at least twice the frequency of the voltage from a three-phase source.

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It is furthermore advantageous according to the invention that a full winding indicator element in the function of a voltage stabilizer is connected in parallel to the electromagnetic transmitter of the take-up reel request.

241 603

According to the invention, this indicator element can advantageously consist of a light-emitting diode.

Finally, an expedient feature of the invention is that the memory member is formed by a reed relay which is operable by an external magnetic field connected in series with its own contact.

Embodiments of the invention are schematically illustrated in the accompanying drawings, wherein Fig. 1 is a block diagram of a wiring transmitting and receiving signals in connection with yarn break and removal thereof; FIG. 2 is a block diagram showing, in addition, a preventive cleaning of the spinning rotor of an open-end spinning unit and transmitting a signal to achieve full yarn winding on the winding reel associated with the spinning unit; FIG. 3 shows an example of a specific wiring corresponding to the block diagram of FIG. 2.

An open-end spinning unit is generally known, comprising a strand feed device for a combing roller, a pneumatic single fiber path, a spinning rotor, a yarn outlet tube, a yarn breakage sensor, a yarn withdrawal and winding device, drives of said rotating parts derived from the central machine drive; possibly also couplings cut into these drives, in particular an electromagnetic sliver coupling, or a device for measuring the length of the wound yarn, as well as a device giving a signal for preventive cleaning of the spinning rotor. All this is known, and it is not necessary to illustrate and describe the spinning unit of an open-end spinning machine in order to illustrate the invention. This also applies to the mobile service unit, which travels around the open-end spinning machine and removes this condition based on the requirements it receives from the spinning units in the case of a non-stationary condition - yarn breakage.

Each spinning unit has a switching element 10 in the electrical circuit of the yarn break sensor, e.g. a suitable microswitch, an indicating element X formed by a light-emitting diode or a bulb, and a feed coupling 2 controlling the drive of the feed roller of the spinning unit. The supply conductors 14 are connected to a central source which is transformed by a transformer 17 and a bridge rectifier 18. By rectifying the three-phase voltage, a waveform supply voltage of 16 is obtained. The supply conductor 14 is connected to the sleeve 241 803 switching element H). connecting it in the presence of yarn, i.e., during spinning, to the conductor 26 leading to the electromagnetic coupling 2 of the feeding; its second outlet is connected to the second supply conductor 22.

In the case of a yarn breakage, the switch element -10 takes the position shown in FIGS. 1, 2 and 3, i. it connects the supply conductor 14 to its conductor 27 by means of a quiescent contact, to which is connected the indicator element - the external signal receiver 6, the memory element 1 and the electromagnetic transmitter 2 of the spin-on request. The second input of the external signal receiver 6 is connected to the conductor 26, the second input of the memory member 6 and the transmitter 2 to the supply conductor 15 and the second input of the indicator element 2 to the output 11 of the memory nu? ) connected to the control tuple 12 of the transmitter · 2.

As can be seen from FIG. 3, the indicating element 6, as already mentioned, is a light-emitting diode connected in series with a resistor; external signal receiver 6 with reed switch controlled by an external magnetic signal - an electronic switch controlled by an optical signal or the like can be used analogously; the memory member 2 is formed by a reed relay 20 in a memory circuit with a contact 21 or a flip-flop, controlled by an external magnetic or optical signal; the transmitter -2 is formed by a coil 19 connected via a resistor 22 to the conductor 27 and to the supply conductor 15.

Embodiment of FIGS. 3 and 4 is extended to the elements which allow ^p reventivn ^{well as the cis} CLEANING with ^Prada Acl <ínotk ^y and equal ^EZ allow to send to the moving to service unit a signal to achieve a full yarn package on the bobbin, which - subject to execution Replacing the full - coil with an empty core. The wiring is complemented by - the electromagnetic transmitter 2 of the request for replacement of the winding coil, consisting of - the coil and the indicator element - 4 full winding, which - is connected - parallel to the transmitter - 2 and - connected to conductor 27 a conductor 13 connected to a switch 23 realized, for example, by a transistor, to which a control half-signal from a known source (not shown), preferably at a frequency equal to at least twice that of the ripple.

In this case, the power conductor 15 is connected to the power supply via a switch-over or switch-over power supply. an expansion element 25 which may be a transistor.

241 603

Switch 23 and expander element 25 are controlled from the device, ^and wherein ^E zaj šíuje me ^of a ^d o ^{ck 'length} nav ⁱ nu of ^{thee at} par zatezpečuje az ^and require replacement winding reel.

Glare ^{and DRIVING p} from ^L e to the invention will ^{also be} amortized with ^p o u ^{l P} r ^a d ^{i 'd P} ojíz Nym operator unit, · providing preventive cleaning of the spinning rotors. In this case, the open-end spinning machine must be equipped with one central or individual device which, after a predetermined period of operation of the spinning unit or, depending on its degree of contamination, gives a signal of the need for preventive cleaning. .

The operation of the described devices is as follows. In the event of yarn breakage in the spinning unit holds the switching element 10 of the sensor breakage ^CMD coordinates representation ^of it at the ojka ^Sp. 2 ^p ro ^p odávání sliver not energized and into the spinning unit is not tentopramen ^{gives p} o ^r c. ^{At r a c} has a bjšího $ 6 ^{g of} n ^and LU is. in ^key . ^p oloze clutch does not engage and 9. Also, the memory member 2 ^e 3 ⁱⁿ its initial position 11 and its output connected to the control input of the transmitter 12 does not block the transmission _of s request for piecing. The yarn break sensor indicator element 7, also connected to the output 11 of the memory member 2t, is not initiated. For the sake of simplicity - in the embodiment according to FIGS. 2 and 3 - the yarn winding on the spool has not yet been completed and the transmitter 2 or its indicator element 4 connected in parallel thereto is not pulsed by the conductor 13. The transmitter 2 is connected via a switching element 10 to the supply voltage and a ripple direct current flows through the coil 19, which generates an alternating magnetic field at a frequency equal to six times the mains frequency at the machine receiver. The service unit is therefore notation. .

region into which gets its motion along the desired supervising the jedObslužný piecing a spinning unit that, during its movement intercepts supervising this demand, stop at the spinning unit in hu ma ^{It runs} orders the removal ^{of HY} with DC-DC magnetic field. ^p ol ^y gives the reed. the contact forming the external receiver 6. signal, as a result of which the clutch 2 begins to supply the fiber strand to the spinning unit. After the yarn is spun, the yarn break sensor status changes and thus. i. the switching element U) through which the coupling 2 is supplied, the transmitter 2 stops transmitting the spinning request and the service unit leaves the spinning unit.

241 603

In case the service unit fails to make the spinning unit in question, and the number of spinning attempts can be optional, the service unit sends a magnetic signal that closes the reed relay 20 of the memory member which is already held through its contact 21. into the display element 6. At the same time, the passage of current through the coil 19 of the transmitter 2 is blocked via the diode 8 and the control input 12 of the transmitter 2. The resistor 22 serves to limit the current through the diode 8.

Transmitter 2 stops transmitting the spin-on request and the operator unit leaves. The memory member 6 blocks the operation of the transmitter 2 until the manual operator removes the cause of the automatic spinning failure and the yarn break sensor controlling the switching element 10 does not deflect the break position for at least a brief moment. This deletes the information in the memory member% and the transmitter 2 can continue to communicate with the service unit.

Upon reaching the desired length of winding, the spun yarn length measuring device will interrupt spinning on the spinning unit - deliberately induced yarn breakage. Said measuring device for measuring the length of the wound yarn may, as already mentioned, have the character of a central device or each spinning unit may be equipped with such a device. From this device, a control pulse signal is supplied to a switch 23 which can be realized, for example, by a transistor. The switching element 10 is in the illustrated state and a half current flows through the resistor 24 through the resistor 24. The indicator element, consisting of a light emitting diode, is also pulse controlled and indicates full winding. At the same time, during the pulse, the transmitter coil J maintains a constant voltage level, thereby filtering out the ripple of the supply voltage, and the spinning request receiver installed on the service unit does not respond to the winding coil change request. This is also due to the fact that the transmitter 2 processes a pulse signal with a frequency higher than six times the frequency of the mains voltage.

For machines where the control of the service unit is limited to performing a spinning operation after yarn breakage and possibly performing a periodic preventive cleaning of the spinning rotors, the device according to the invention is, in a variant, without a transmitter 2 to change the winding reel.

Claims (5)

SUBJECT OF THE INVENTION 241 603 An apparatus for communicating an open-end spinning unit to a mobile service unit, comprising an electromagnetic spinning transmitter, which. is connected to the electrical circuit of the yarn break sensor, characterized in that the yarn break sensor electromagnetic transmitter (2) is connected via a yarn break sensor switch element (10) to a three-phase bridge rectified voltage source equal to six times the line frequency the output (11) of the external signal-sensitive memory member (5) is connected to the control input (12) of the electromagnetic transmitter (2), which output (11) is connected to the yarn break indicator (7). 2. Device according to claim 1, wherein an electromagnetic take-up reel request transmitter is also connected to the yarn break sensor electrical circuit, characterized in that the take-up request solenoid transmitter (3) is connected in series with the yarn break sensor switch element (10). the coil is connected via a second terminal to an AC power supply (23) having a frequency equal to at least twice the frequency of the voltage from the three-phase power supply (17, 18). Device according to claim 2, characterized in that a full winding indicator (4) in the function of a voltage stabilizer is connected in parallel to the take-up reel request transmitter (3). Device according to claim 3, characterized in that the full winding indicator element (4) is a light-emitting diode. Device according to claim 1, characterized in that the memory member (5) is formed by a reed relay (20) which is operable by an external magnetic field connected in series with its own contact (21).