FR2681880A1 - METHOD AND APPARATUS FOR OPERATING A WIRED OR CONTINUOUS RING RETAIL MACHINE. - Google Patents

Abstract

The invention relates to a method and a device for the operation of a continuous ring spinning or twisting machine, and in particular for monitoring the automatic removal of full spools and the sinking of empty cans, while the presence or the absence of a can or spool is detected on each individual gripper, and fault signals are formed from the detection signals. Essentially, the method is characterized by the fact that the fault signals are formed from the comparison of the detection signals of the various gripping elements with set point signals intended for all the gripping elements, and that the it is possible to generate an instruction signal intended to stop only that of the spinning stations which produces the formation of the fault signal. Application to spinning or twisting looms.

Description

Method and apparatus for operating a spinning machine or

  The invention relates to a method and a device

  for the operation of a spinning or twisting machine

  tinu ring, and in particular to monitor the kidnapping

  automatic feeding of full bobbins and the depression of

  net, while several reels or cans are seized at the same time, that the presence or absence,

  respectively, of a can or a bobbin, respectively

  is detected on each individual gripping element

  duality, and that fault signals are formed from the

detection signals.

  It has already been proposed a method and a device for

  monitor the taking or, respectively, the release of all

  the cans or all coils, respectively, on an automatic device for the change of the coils of a ring spinning machine or continuous twisting machine (request

  German Patent No. 38 36 330 5) A plurality of bobbins

  In this case, either full or empty cans, respectively, are withdrawn simultaneously from the pins or the holding pins, respectively, by means of gripping elements, while a photocell having a radius extending through the region of FIG. full bobbins to be removed, being interrupted by a bobbin or bobbin that has not been removed or has not been released, respectively,

  in order to trigger a fault signal -

  In addition, a device has been proposed which is intended to grip an empty can or bob on which thread is wound, respectively, and which comprises a sensor for detecting the presence or absence, respectively, of an empty can or of a solid coil, respectively, this sensor being connected to a signaling device

  (German Patent Application No. P 40 37 3126-26).

  In these embodiments, each station of the automatic device for the change of the coils is interrogated by an individual sensor in order to know if a coil or a

  respectively, was seized or not, respectively

  a signal being issued in the event of a defect in the

  of the change operation. The signal can interrupt

  pre the change operation or, respectively, call the

staff.

  The interruption of the change operation which

  avoids malfunctions, and which is therefore preferred.

  the disadvantage that it is the work of the whole

  which is interrupted if the service staff does not intervene

  does not come quickly, or if it can not intervene without delay because it is called elsewhere It thus produces a loss of production that is not desirable Other

  on the other hand, if there is no interruption of the exchange

  damage can occur, or interventions

  prolonged may be necessary.

  The object of the present invention is therefore to develop

  lopper a process and, respectively, a device of the kind mentioned at the beginning in such a way that in the presence of the advertisement

  of a defect, the removal operation shall be interrupted

  when it seems necessary and, if not, only the spinning station concerned

  the kidnapping operation continues nevertheless.

  According to the invention, this goal is achieved thanks to the fact

  that the fault signals are formed from the comparison

  because of the detection signals of the various elements of pre-

  with set signals for all

  grips, and thanks to the fact that, depending on the

  signals indicating the situation in the course of the exchange

  coils, one forms, from a fault signal,

  an instruction signal intended to interrupt the operation

  removal instruction, ie an instruction signal intended to stop only that of the spinning stations which produces or

  which produced the formation of the fault signal.

  This gives the advantage that, thanks to the difference

  fault messages, only the one of the workstations on which the fault occurs is stopped, while the change operation continues with -

  elsewhere without obstacles This avoids any loss of

  undesirable production, and the operation of the trade or the

  reel change, respectively, may continue except where the work is defective. The device for implementing the method is characterized by a control device which is connected to the

  sensor devices and a control device for

  change in the coils, which includes a first

  1 Q discriminator stage for comparing the detection signals

  detection devices to setpoint signals of the

  control device for the winding change of the bobbin

  to provide a fault signal in the event that there is no

  coincidence, and which includes a second discriminator stage for converting fault signals into various instruction signals as a function of status signals emanating from the

  control device for the winding change of the bobbin

  nes. In what follows, the invention is explained by a

  in more detail with the help of

represented in the drawing.

  Figures 1 to 3 of the drawing show each time a schematic front view of a continuous ring spinning machine in various phases of work of the operation of

change of coils.

  According to FIG. 1, a continuous ring spinning machine 1 comprises a plurality of spinning stations of which only a few, located in the region of the end frame 35 of the loom, have been represented by "spinning station", here it is necessary to understand all the working members of the continuous ring spinning machine which cooperate for the production of a single wire; these are particularly

  25, 26, 28 (FIGS. 2 and 3) of a test bench

  not shown, of pins 4 mounted on a rail

  pins 3 and a device for stopping a spinning station concerned. In the embodiment which is shown and described, this device is composed of a wick stop device 32, 33 (FIG. 2) by means of which the wick which is pulled from a bench spool can be stopped, the Continuation of the wick supply which can thus be interrupted The construction and operation of such wick stop devices are known, and are therefore not described here.

in a more detailed way.

  Gripping elements 7 are provided on a reel beam 6 of a reel changing device which is designated as a whole by the reference numeral 5. The reel beam 6 can be raised and lowered in a manner known per se. by means of a driving device 13, and it can move from its upper position shown in Figure 1 to its lower position shown on the

figure 2.

  Below the spindle rail 3 is a conveyor device 9 provided with an endless conveyor belt, which comprises posts 10 which are spaced from each other by half the pitch distance between the pins and which are intended to receive coils 11 or, respectively,

  empty cans 12 The training device of the disc

  positive carrier 9 is not shown; he is

  connected to a device 14 for controlling the unwinding of the change of the coils which is in the end frame

of career.

  In this end frame 35 of the spinning machine con-

  a ring device 1 is furthermore arranged

  16 comprising a first discriminator stage 17 and a

second discriminator stage 18.

  Each gripping element 7 comprises a sensor

  intended to detect the presence or absence, respectively

  an empty bobbin 12 or, respectively, a bobbin

  full 11 The sensors 15 are connected to the communication device

  16 through a driver 24 Each

  The gripping member 7 may be provided here, for example, with a clamping member which is not shown in more detail and which can be moved to the empty can.

  or, respectively, to the full reel 11, this one carries

  against a stop, while the clamping member is in connection with the sensor 15 and that it activates the latter accordingly Gripping elements shaped in this manner are described and represented in the patent application

  German No P 40 37 312 which has not yet been published.

  The general operation of changing the reels then takes place as follows: the conveying device 9 moves successively during the production process a complete set of empty cans 12 placed on the tenons 10 to a corresponding position of removal of the coils on along the ring spinning machine 1 In

  the starting position of the bobbin change device

  10, the lugs 10 filled empty cans 12 are offset by a half distance between the pins with respect to

pin axes 4.

  The operation of removing the coils properly

  it begins after the unwinding, that is to say after the completion

  production process: the gripping elements 7 withdraw the full coils 11 of the pins 4 after the reel beam 6 has been lowered, and they then move to the lowest position in which

  they lay the full coils 11 on the empty tenons cor-

  corresponding 10 of the carrier device 9.

  After the raising of the reel beam, the

  carrier device moves laterally one half

  not, so that the empty cans 12 are moved

  only in their removal position.

  7 then seize the empty cans 12, remove them

  ten studs and they depress them on the pins 4 of the carrier rail 3 after the reel beam 6 has reached its upper position and it has been lowered to

new.

  The correct procedure for the removal of the coils can be monitored by means of a photocell 29

  which consists of a transmitter 30 and a receiver 31.

  The control device 16 is connected to the device

  14, a conductor 19 serves to transmit a signal for stopping the change of the coils, a conductor 20 is used to transmit status signals from the control device of the unwinding of the coils. change of coils and that a

  21 serves to transmit the signal "every bobbin

  nes or, respectively, all the cans seized "or the signal" all the reels or, respectively, all the cans released ", this signal still to be explained

further.

  In addition, the first discriminator stage 17 is connected to the receiver 31 of the photocell 29, as well as to the various gripping elements 7 or, respectively, to the sensors 15 which are individually associated with them. The transmission of the coded sensor signal according to the spinning station (real signal) at the first stage discriminator 17a

  place through the driver 24.

  The second discriminator stage 18 is connected to

  wick stop devices 32, 33, 34, etc. through

of a driver 22.

  FIG. 1 represents a working phase in which the gripping elements 7 have removed the full coils 11 from the pins 4 of the continuous ring spinning machine,

  the empty cans 12 on ten pins 10 of the disc

positive carrier 9.

  We are here in the situation in which the

  sensor of the gripping element VI does not detect a bobbin

  after the full coil 11 has been removed, so that it then delivers a detection signal to the first stage

  discriminator 17 via the driver 24.

  At the same time, the first discriminator stage 17

  receives from the control device 14 of the course of change-

  a setpoint signal whose content is that, in this phase of the change of the coils, coils must be grasped by the gripping elements 7 and that consequently the presence of coils must be detected by the sensors 15 it is not so, in any case, for the gripping element VI, a fault signal 23 is generated in the first discriminator stage 17, and

  is transmitted to the second discriminator stage 18.

  This second discriminator stage 18 receives from the

  4, the content of which is that the removal operation is in the phase in which the full coils 11 have been removed from the pins 4. As a result of the fact that the coil of which the presence was not detected on the gripping element VI could have remained on the pin 4, and that the depression of an empty can on the coil remained on the

  pin could lead to damage as a result of

  of the coil change operation, the second discriminator stage 18 delivers to the control device 14 the unwinding of the change of the coils, in this phase of

  the removal operation, and through the conduct of

  19, an instruction signal intended to interrupt the

ration of change of the coils.

  In another embodiment of the invention, it may be provided to explore the region above the pins 4 by means of a photoelectric cell 29 to detect coils 11 remained in place This embodiment

  is shown in FIG. 1: when the photocell

  29 establishes that no full coil 11 remained on the pin 4 whose associated sensor 15 has triggered a

  detection signal, the interruption of the exchange

  reels can be removed nothing prevents the filling of the spindle of an empty can

  during the course of the change operation.

  If a full coil 11 has remained on the pin, there is the possibility that is not shown in more detail to trigger an optical signal or

  acoustic warning, which leads, for example, to

  service staff to remove the full spool 11 from the spindle

  to avoid unpleasant damage in the subsequent

operations.

  According to the invention, it can also be provided to verify by means of the photocell 29 if a coil 11 has actually remained on a pin 4.

  not the case, the emission of a fault signal 23 by the first

  first discriminator stage 17 is prohibited by the signal of the receiver 31 of the photocell 29 which is brought

  at the first discriminator stage 17.

  The operation of changing the coils is also interrupted in another case which is not shown in the figures, namely when a coil remains on a gripping element 7, or on several, after the laying of the coils

  11 on the places of installation 8 of the transpor-

9.

  In this case also, a fault signal 23 is generated in the first discriminator stage 17, from the detection signal of the sensor 15 of the gripping element.

  corresponding, and by comparison with the signals of

  of all the gripping elements 7, as well as

  signals indicating the situation in the course of the change of the coils, and an instruction signal is

  formed from this signal in the second discrimi-

  18 to interrupt the removal operation.

  The situation according to Figure 2 is due to the fact that

  next to the removal of the empty cans 12 of the tenons 10 of the conveyor device 9, the presence of a can 12 is not detected on the reel beam 6, as is the case, for example, for the element of grasping II (the can is not present) or for the gripping element

  VIII (Can 12 could not be seized).

  As a result, no empty can can be driven into the spinning station concerned. In this case, damage can only occur if the pins of these spinning stations are covered with wire, which can not be removed during the following operation of changing the reels, of course, and on which an empty can does

  can not be depressed during the following devi

  It is therefore sufficient to prevent the spinning stations concerned from continuing to function; it is not necessary

  to interrupt the operation of changing the coils.

  The detection signals delivered through the

  24 of the conductors 24 of the sensors 15 of the gripping elements II or VIII, respectively, are compared in the first discriminator stage 17 to the reference signal which is provided by the control device 14 for controlling the unwinding of the reel change and which plans to seize cans in all the gripping elements As this is not in any case realized in the gripping elements II and VIII, coded defect signals according to the spinning station are delivered by the first discriminator stage 17

at the second discriminator stage 18.

  These fault signals are compared at this point,

  for the given phase of the winding change

  nes, to the situation signal that is provided on the second floor

  discriminator 18 In this case, the second discrimi-

  18, as a result of the fault signals supplied, leads to the wick stop devices 32 and 33 of the respective spinning stations II and VIII, via the conductor 22,

  encoded instruction signals according to the

  age by which these spinning stations are stopped, in

  meaning that they no longer provide wicks.

  FIG. 3 represents the laying of the empty cans 12 on the pins 4 of the pin-carrying rail 3. As can be seen, the gripping element IV which is associated with the spinning station concerned did not release the can 12 during the

  poses on pin 4: in this case too, it is only

  the disadvantages described above which may

  ne; there too, so just stop the spinning station

  concerned, for example by means of the

  the end of the wicks 34 With regard to

  II and VIII, the cans 12 are missing here each time.

  The spinning stations concerned are also stopped by

  analogous to the operation according to FIG.

  intermediate devices for stopping strands 32 and 33 which

are associated with these.

  By comparing the detection signal of the sensor with the reference signals emanating from the device 14 for controlling the course of the change of the coils in the two discriminating stages 17 and 18, an instruction signal coded as a function of the spinning station is finally generated in the second discriminator stage 18, and is transmitted to the stations

concerned.

  After the removal and laying of the bobbins and empty cans, it is checked each time whether or not the bobbins or empty cans, respectively, were seized, and accordingly, according to the position of this phase in the operation of changing the coils: 1 Training signals are formed to stop the

  various spinning stations and, consequently,

  only individual spinning stations when: a) After the removal of empty cans 12 of the tenons of the conveying device 9, no empty can is detected as being seized, or: b) After the laying of empty cans 12 on the pins 4, an empty can 12 is detected as being seized; or: Instruction signals are formed to interrupt the removal operation, and the removal operation is accordingly interrupted when:

  (c) After the removal of full bobbins 11 of the bro-

  4, no empty can is detected as being

  sie, and it is to be feared that the coil has remained on the spindle, or: d) After the laying of full coils 11 on the tenons

  of the conveying device 9, a full reel is detected

as seized.

  In the course of the process according to the invention, it is during a first evaluation carried out in the first discriminator stage 17 that a comparison of the detection signals of the individual gripping elements 7 takes place, that is to say real signals - "occupied" or "not busy", with the set signals of all the gripping elements 7, ie "all occupied" or all not occupied ", signals

  fault 23 being formed if necessary.

  It is during a second evaluation carried out in the second discriminator stage 18 that a comparison of the fault signals 23 of the first evaluation stage with signals indicating the situation in the course of operation takes place.

change of coils.

  Depending on these situation signals, either a signal is provided to interrupt the removal operation, i.e., in cases c) or d), respectively, or a signal is provided to stop only that of positions

  spinning which produced the formation of the fault signal of the first

  first evaluation stage, ie in cases a) or b), respectively.

  It is also possible, according to the invention

  tion, as a function of the phases of the unwinding of the coils, that, in the case where a fault signal is formed in a second time in each given phase of the course of the change of the coils, this signal acts as a signal intended to interrupt the removal operation or, respectively, as a signal intended to stop the spinning station Again, this is a two-stage evaluation, but the succession in the

  time of the stages here is reversed with respect to

previous decision.

  The two possibilities have in common that the coded error signals according to the spinning station are formed from the comparison of the detection signals of the various gripping elements with setpoint signals intended for all the gripping elements, and that in terms of

  signals indicating the situation in the course of the exchange

  coil is formed, from a fault signal, either an instruction signal for interrupting the removal operation, or an instruction signal coded according to the spinning station and intended to stop only the spinning stations that produce or have produced the

formation of the fault signal.

  The main points of the invention are therefore Detection of fault functions specific to the spinning stations, Comparison of actual detection signals with detection setpoint signals in order to generate coded defect signals according to the spinning station, Comparison fault signals with status signals to generate: either, where permissible, stop instruction signals which are coded according to the

  spinning and which concern only individual spinning

  duals, either interrupt instruction signals that

  relate to the entire operation of changing the coils.

Claims (7)

CLAIMS -   1 Method for operating a spinning machine   or continuous twisting with rings, and in particular for over-   ensure the automatic removal of full bobbins and the   of empty cans, while several bobbins or cans are gripped at the same time, that the presence or absence, respectively, of a bobbin or bobbin, respectively, is detected on each individual gripping element, and that fault signals are formed from the detection signals, characterized in that the fault signals (23) are formed from the comparison of the detection signals of the various gripping elements (7) with reference signals. instructions for all items   gripping force, and by the fact that according to   as for the situation in the course of the change of the coils, one forms, starting from a fault signal, a   instruction signal intended to interrupt the operation of   an instruction signal intended to stop only   the spinning stations that produce or have pro-   causes the formation of the fault signal (23).   Process according to claim 1, comprising the former   additional common ploration of the pose places of all   spinning stations to detect the presence or ab-   of a can or bobbin, respectively,   characterized by the fact that a   occupancy of a gripping element (7) is checked to determine if the bobbin (12) or the bobbin (11) has remained on this laying point (2; 8), by exploring the position of application (2; 8) of at least the gripping element (7) which triggers the non-occupancy signal, and that a fault signal (23) is not issued in the case where the   laying places (2; 8) are not occupied either.   Method according to Claim 1, characterized in that a fault signal (23) is issued in the case   detection of non-occupation of a preheating element   sion (7) after an abduction which requires the occupation of all   gripping elements (7), or in the case of detecting   an occupation of a gripping element (7) after a laying which requires the non-occupation of all the gripping elements (7) (formation of the fault signal).   4. Process according to claims 1 and 3, characterized   in that a signal for interrupting the removal operation is triggered by a fault signal (23) after removal of the full coils (11) from the pins (4) or by 1 Q a fault signal. (23) after the laying of the full coils (11) on the laying places (8) of the conveyor device   (9) (formation of the interrupt signal).   Process according to claims 1 and 3, characterized   in that a signal intended to stop only the 1 spinning station concerned is triggered by a signal of   defect (23) which is triggered after the removal of the cannet-   the voids (12) of the tenons (10) of the conveying device (9) or after the laying of the empty cans (12) on the pins (4) (formation of the stop signal).   6 Device for implementing the method according to   claim 1 on a spinning or twisting machine   nude ring with a device for change   coil and comprising capacitors   the means by which the state of occupation can be determined   respectively non-occupation of each gripping element of the device for the automatic change of the coils, characterized by a control device (16)   which is connected to the sensor devices (15) and to a device   control of the change of the reels   (14), which comprises a first discriminator stage (17) of   to compare detection signals ("busy" or "no"   occupied ") from the sensor devices (15) to con-   sign ("all occupied" or "all not occupied") of the control device of the unwinding of the reels (14) and to deliver a fault signal (23) in the case of non-coincidence, and which comprises a second discriminator stage (18) for converting fault signals into various instruction signals according to status signals   emanating from the control device of the exchange coils (14).   Device according to claim 6, wherein the   device for the automatic change of the reels comprising   a reel beam filled with preheating elements   sion, and characterized in that the sensors (15) are   arranged on the reel beam (6).   8 Device according to claim 6 for carrying out the method according to claim 2, characterized by   a photocell (29) connected to the communication device   16 (16) and for detecting the presence of coils (11) or cans (12) which have remained on pose.