EP2589437B1 - Procédé de détection des pannes et de mesure de la course de soupape d'une vanne à colle - Google Patents

Procédé de détection des pannes et de mesure de la course de soupape d'une vanne à colle Download PDF

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Publication number
EP2589437B1
EP2589437B1 EP12007283.0A EP12007283A EP2589437B1 EP 2589437 B1 EP2589437 B1 EP 2589437B1 EP 12007283 A EP12007283 A EP 12007283A EP 2589437 B1 EP2589437 B1 EP 2589437B1
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EP
European Patent Office
Prior art keywords
valve
glue
coil
values
current
Prior art date
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Application number
EP12007283.0A
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German (de)
English (en)
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EP2589437A2 (fr
EP2589437A3 (fr
Inventor
Ralf Barkmann
Wolfgang Rohwedder
Marc-Daniel Stegen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Focke and Co GmbH and Co KG
Original Assignee
Focke and Co GmbH and Co KG
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Publication of EP2589437A3 publication Critical patent/EP2589437A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1034—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm

Definitions

  • the present invention relates to a method for detecting disturbances of a glue valve and a method for detecting the valve lift of a glue valve.
  • glue valves are used in the manufacture and / or packaging of cigarettes or other smokable items. For example, with the glue valves individual areas of blanks of cigarette packs can be glued together or with separate or separate blanks.
  • glue valves Another problem with such glue valves is the correct specification of the valve lift.
  • a stroke limiter for the movable closure member of the valve for setting the valve lift can be set manually. This often serves a suitable adjustment of the stroke limiter.
  • the set angle of rotation of the adjusting screw is a measure of the valve lift. As part of this adjustment process, it is often difficult to check if or when the correct angle of rotation of the screw is set. Because even slight changes in the angle of rotation can change the valve lift from a permissible to an impermissible value.
  • the valve has an at least partially, preferably made entirely of magnetizable material component whose position for adjusting the valve lift by movement of the component relative to a by an electromagnet the valve movable closure member is changeable.
  • this position is preferably also or in particular in the case of a non-moving closure member, for example in a stationary opening or closing position of the same, relative to the closure member by a particular manual setting operation changeable.
  • the component is usually a Ventilhubbegrenzer or a component thereof. It is arranged such that it is located in the magnetic influence of the solenoid of the valve. It is preferably arranged at least in regions within the coil of the same, so at least in this area surrounded by this, quasi in the manner of a core of the same. In any case, at least one or the magnetizable region thereof is preferably arranged in the coil.
  • the actual inductance value of the coil of the electromagnet is then measured as a measure of the position or position of the component relative to the closure member and thus as a measure of the particular manually set valve lift.
  • the measurement of the actual inductance value is preferably carried out when the valve is closed, ie in a closed position of the closure member of the valve.
  • Such a method can be used, for example, in glue valves which are part of a device for producing and / or packaging cigarettes or other smokable objects.
  • the method can basically be used regardless of whether the glue valve or possibly the manufacturing device to which it is associated is in operation or not.
  • the method according to the invention can advantageously be used to monitor the previously set valve lift of the respective glue valve in the production process or in the operation of a glue valve or manufacturing device in operation.
  • the glue valve is cyclically operated in the manufacturing process with Beleimungsphasen in which glue is opened to dispense glue, and rest periods in which the valve is closed so that no glue leaks, wherein the actual values of the coil inductance in at least one of the rest phases of the glue valve be determined.
  • the actual inductance values of the valve are determined by, in particular during the rest phase of the valve, a suitable, in particular variable in the measuring current, usually an alternating current, is passed through the at least one coil.
  • a suitable, in particular variable in the measuring current usually an alternating current
  • the measuring current can be caused for example by a suitable resonant circuit, wherein the coil is part of the resonant circuit during the measurement.
  • a first, preferably optical signal can be generated, which represents a valve lift value permissible for the glue valve, or a second, which differs from the first
  • an optical signal representing a valve stroke value that is not allowed for the glue valve.
  • the measured actual value of the coil inductance or a value which is preferably linearly dependent thereon can in particular be visually displayed, preferably on a screen.
  • the actual values of the temperature of the glue valve or the actual values of a measured variable from which the actual temperature values of the glue valve can be derived can be determined within a running production process, in particular a packaging process, by a glue valve. The determination of these actual values takes place multiple times, for example continuously or from time to time, during the ongoing production process. The determined actual values are then evaluated with regard to a malfunction of the glue valve - also automatically. For this purpose, the actual values are preferably compared with corresponding desired or limit values stored for the glue valve and / or with corresponding actual values of at least one other glue valve operating or operating within the current production process.
  • such a method is used in glue valves that are part of an operating device for the manufacture and / or packaging of cigarettes or other smokable objects.
  • a preferred measurement variable, from which the actual temperature of the glue valve can be derived in principle, and whose actual values can be determined, is the resistance of at least one coil of an electromagnet of the valve used for actuating a closure member of the valve. It was recognized that the respective actual value of the coil resistance is a good measure of the glue valve temperature.
  • the glue valve is preferably operated discontinuously, in particular intermittently, with operating phases, namely gluing phases, in which the glue valve is open to dispense glue, and with operating phases, namely resting, in which the valve is closed, so that no glue leaks out.
  • operating phases namely gluing phases
  • resting in which the valve is closed
  • target values of the measured variable from which the temperature can be derived, and / or the temperature set values and / or the setpoint values of the coil inductance and / or the table or the graph, in the coil resistance value (s), can be temperature values of the noise valve are assigned to be read from a arranged on the valve transponder.
  • Gluing valves 10 shown are part of a gluing system 25 according to the invention (cf. Fig. 2 ), which in turn is part of a device, not shown, for the production of cigarettes or packaging for these cigarettes or part of a device for producing and / or packaging cigarettes.
  • Such devices may be machines such as a maker, a packaging machine for making the actual cigarette packs (packer), a film wrapping machine (cello), a bar packer, a carton packer or a palletizer, or the like.
  • the glue valves 10 are known in their basic structure in parts, for example from the DE 10 2009 022 496.3 ,
  • Such a glue valve 10 comprises a valve housing 11 and a plug housing 12 fastened thereto.
  • the glue valve 10 has an electromagnet 14.
  • the electromagnet 14 is arranged in a valve housing interior 13.
  • a plurality of electromagnets 14 can also be used.
  • the electromagnet 14 has a coil 15 with individual windings.
  • the coil 15 is wound on a bobbin 16.
  • the bobbin 16 is part of a valve chamber 17. On such a bobbin 16 can of course also be dispensed with, so that the coil 15 would be designed to be self-supporting in such a case.
  • a closing or metering device 18 of the valve 10 is movably arranged, in the present case a valve lifter.
  • a closure means 20 is arranged, in this case a ball.
  • the closure means 20 is associated with a valve opening 21.
  • the valve opening 21 is located centrally in the region of a funnel-shaped valve seat 22.
  • the closure means 20 is in the closed position of the valve 10 on conical seating surfaces of the valve seat 22 at.
  • a glue connection 23 can be the glue valve 10 to be metered glue from the in Fig. 2 shown glue source 24 of the gluing system 25 are supplied by glue lines 24a. From the glue connection 23, the glue is first guided along a glue channel 26 of the glue valve 10 and then into the valve chamber 17 via connecting channels 27 leaving it.
  • the closure member 18 can be opened by suitable loading of the electromagnet 14 with electric current, so that glue can escape from the valve chamber 17.
  • the coil 15 of the electromagnet 14 surrounds the closure member 18 at least in sections.
  • the closure member 18 is preferably permanently urged in the closing direction by a closing force of a closing means or closing member.
  • This is formed in the present embodiment as a two individual magnets comprehensive permanent magnet which exerts a permanent magnetic force on the closure member 18 in the sense of a closing movement.
  • suitable closing forces exerting closing means may be used, such as (return) springs or the like.
  • One of the individual magnets of the permanent magnet is arranged at the free end or on a head part 32 of a magnetizable, metallic component 29 whose position is relative to the closure member 18 in the manner to be explained in more detail below the valve lift.
  • the free lower end or the head part 32 of the component 29 is opposite the free upper end of the piston piece 28 of the closure member 18.
  • the other single magnet of the permanent magnet is the individual magnet of the head portion 32 opposite to the closure member 18 and attached to the free end of the piston piece 28.
  • the individual magnets have in the present case even when the glue valve 10 is open a (small) distance from each other.
  • the opposing individual magnets are positioned so that like poles are facing each other, for example, the north poles of the same.
  • a repulsive force is permanently transmitted to the closure member 18, namely the above-mentioned closing force.
  • the magnetic opening force acting on the closure member 19 opposite this closing force is generated which overcomes the closing force and is correspondingly larger during the opening operation ,
  • the magnetizable component 29 forms - as already indicated above - together with the individual magnets an adjustable stroke limiter for the closure member 18, which limits the length of the path by which the closure member 18 during the opening movement in the valve chamber 17 can be moved maximally upward.
  • the closure member 18 is moved by the opening force applied by the electromagnet 14 so far up in the direction of the magnetizable member 29 or the component 29, in this case the head portion 32 thereof, so far approximated until the repulsive magnetic force between the Single magnet of the upward or acting on the closure member 18 opening force corresponds to or exceeds this.
  • At which position of the closure member 18, that is at which value of the Ventilhubs this is the case depends inter alia significantly on the position of the component 29 and the head part 32 thereof.
  • This position of the component 29 is variable to adjust the valve lift relative to the closure member 18 and to the valve chamber 17 by the component 29 is moved by a manual adjustment either in the direction of the closure member 18 further down or in the opposite direction further upwards ,
  • the component 29 has in the upper area, i. above the head portion 32, via a threaded portion 30 and an adjusting screw.
  • the adjusting screw 30 is adjustable in a fixed support 31 of the valve 10 with a corresponding internal thread in the longitudinal direction.
  • a recess is provided at the free upper end of the adjusting screw 30, for applying a tool, for example a hexagon socket wrench.
  • the entire component 29 can be moved by rotation of the adjusting screw by means of the tool about its longitudinal axis depending on the direction of rotation either further up or further down.
  • all glue valves 10 are controlled by means of a master controller 33 of the gluing system 25 and by subordinate or local controllers 36 connected to the master controller 33 via control lines 35, which are respectively connected to the superordinate master controller 33.
  • Each glue valve 10 is assigned a local controller 36 in each case.
  • the master controller 33 of the gluing system 25 is connected via a control line 34 to a higher-level central machine control.
  • the master controller 33 would be connected to the central machine control of this packaging machine.
  • the local controllers 36 each receive control parameters from the master controller 33 of the gluing system 25, by means of which the local controllers 36 carry out the individual control of the valves 10. Details of a possible Control technology, for example, in the DE 10 2009 029 821.5 discloses the content of which is incorporated into the present application.
  • the opening and closing movements of the glue valves 10 are controlled or optionally regulated by the controllers 33, 36.
  • the movements of the closure member 18 of each valve 10 are achieved by applying the electromagnet 14 and the coil 15 of the corresponding valve 10 with a suitable control current.
  • the local controllers 36 have suitable current or voltage sources or suitable amplifiers and are each connected by means of power lines 37 to the valves 10.
  • valves 10 can be controlled, for example, such that they can cyclically provide individual blanks of cigarette packs with corresponding glue portions, for example during operation of a packaging machine.
  • control is used unifying in the context of this application, regardless of whether control or regulatory operations are described.
  • controller With the aid of one or more of the described controllers, hereinafter referred to collectively as "controller”, recognition or monitoring methods which are important for the invention can be implemented.
  • each set valve lift each glue valve 10 of the gluing system 25 automatically detected and displayed.
  • the control detects in each case the actual inductance value of the coil 15 of the electromagnet 14 of the valve 10.
  • This inductance value is significantly influenced inter alia by the position of the component 29, in particular the head 32 thereof, relative to the coil 15.
  • the lower the component 29 in the valve 10th That is, the more it is immersed in the coil interior, the greater the measurable current inductance value of the coil 15. Since the position of the component 29 in turn directly influences the valve lift, the actual value of the coil inductance is thus a measure of the set valve lift ,
  • the controller can determine in the course of this, for example, whether the currently set valve lift has a permissible value and, for example - if this is not the case - generate an error signal.
  • the controller could display, for example, in the set-up mode, a setter, in particular optically, the valve lift manually set by means of the adjusting screw 30 or a measure for the latter, preferably optically on a suitable screen.
  • a setter in particular optically, the valve lift manually set by means of the adjusting screw 30 or a measure for the latter, preferably optically on a suitable screen.
  • the measured value of the coil inductance can be displayed directly, or a value which is particularly linearly dependent on this value and which is a measure of the valve lift.
  • a first signal is generated which represents a valve stroke value permissible for the glue valve, or a second, different signal which represents a valve stroke value which is not permissible for the glue valve.
  • a first and a second lighting means 39a, 39b are respectively arranged on the local controllers 36, for example a green signal light and a red signal light.
  • the green signal lamp 39a lights up
  • the red signal lamp 39b lights up.
  • control can expediently compare these actual values with reference values stored for the glue valve or with limit values stored for the glue valve.
  • the corresponding values can, for example, be stored in suitable digital data memories of the controller.
  • Fig. 5 shows the dependence of the coil inductance of the rotation angle a, which is a measure of the position of the adjusting screw 30 of the component 29.
  • the increasing ⁇ values then correspond to angles of rotation about which the adjusting screw 30 is rotated about its longitudinal axis, starting from the 0 ° position, in order to move the component 29 further upwards from the lower end position, thereby increasing the valve lift.
  • an angle range 38 is shown in hatched form in which, according to the above, the values of the coil inductances relative to the respective glue valve 10 assume permissible values, so that, if values were measured, the green lamp 39a would light up.
  • the set valve lift is at the corresponding rotational angles of the adjusting screw 30 in an allowable range.
  • the inductance values and thus the corresponding valve lift values are classified as inadmissible.
  • the red lamp 39b would light up.
  • the values for the lower allowable limit of the inductance and for the upper allowable limit, respectively, are smaller than those of the valves 10 represented by the curves C, D be represented.
  • the controller can correspondingly generate an error signal.
  • This error signal would indicate that at least one of the glue valves is faulty.
  • the measurement of the actual inductance values is preferably carried out during operation of the valve 10, for example during a rest phase thereof, in which the closure member 18 is in the closed position.
  • One possibility of the measurement is to conduct a suitable measuring current, in particular an alternating current, through the coil 15 with the aid of a suitable oscillating circuit circuit. With the aid of this measuring current, the inductance value of the coil 15 can then be determined in a manner known per se.
  • Fig. 6 For example, a diagram illustrating the time-dependent current flow through a glue valve 10 during operation thereof is shown. According to the example of Fig. 6 the coil 15 is applied periodically or cyclically with identical currents. The curve sections A and A 'represent the successive phases of operation of the glue valve 10 during operation thereof.
  • the thereby initiated magnetic field of the electromagnet 14 ensures that the closure member 18 is moved in the manner already described above against the closing force of the individual magnets in the longitudinal direction upwards, thus the valve 10 is opened.
  • the valve is then held by means of a so-called holding current, the strength of which is slightly less than the opening opening of the glue valve 10 necessary opening flow.
  • the coil current is continuously reduced to zero or approximately zero, so that the closure member 18 moves back into the closed position.
  • the coil 15 - as already indicated above - corresponding to the current waveforms B and B 'in Fig. 6 subjected to an alternating current of low intensity.
  • the alternating current intensity is chosen so that this causes no unwanted movement of the closure member 18. Much more
  • the alternating current is used as a pure measuring current to measure the inductance of the coil in the resting phase.
  • the controller may automatically detect malfunctions of one or more size valves 10.
  • the actual values of the temperature of the glue valve or the actual values of a measured variable, from which the actual temperature values of the glue valve 10 can be derived are measured during operation of the glue valve 10 and evaluated with regard to a fault.
  • the respective glue valve 10 in its phases of rest accordingly Fig. 6 with measuring currents F, F 'are applied, in particular constant strength (DC). With the aid of these measuring currents, the respective actual resistance of the coil 15 of the valve 10 can be determined.
  • the actual resistance of the coil 15 is a measure of the actual temperature of the glue valve 10.
  • the actual temperature of the glue valve 10 influences the actual coil resistance or the actual coil resistance is dependent on the actual temperature.
  • Fig. 3 shows two characteristic curves or characteristics G, H of the coil resistance for two different size valves 10, depending on the operating time t of the respective glue valve 10. As can be seen, as the glue valve 10 continues to operate, its coil resistance values also increase.
  • the ambient temperature of the glue valves 10 often increases due to heat-emitting units in the vicinity of the glue valves 10, on the other hand heat is generated due to friction processes in the valves 10.
  • the dashed curves G ', H' in Fig. 3 show actual actual curves of the coil resistances. In other words, these curves correspond to the measured values.
  • the actual curve progressions G ', H' deviate upward from the desired or the expected curve progressions G, H, respectively.
  • the deviations are explained by disturbances of the glue valves 10 due to glue contamination within the valves 10, which impedes the flow of glue through the respective glue valve 10.
  • the glue flow basically ensures the removal of water in the manner of a coolant Heat of the Leimventils 10. In case of flow disturbances less heat is removed, accordingly deviates the actual temperature in the glue valve 10 from the setpoints and thus the coil resistance R of the expected curves G, H.
  • the measured actual values As part of the evaluation of the measured coil resistance values, the measured actual values according to the alternative in Fig. 3 generally speaking compared with set for the respective valve 10 setpoints or limits. Insofar as the measured actual values deviate from the desired values or differ by a predetermined amount, the controller 33, 35 outputs an error signal.
  • the stored setpoint or limit values may depend on other detected or measured parameters, such as the operating time of the respective valve or the ambient temperature in the vicinity of the respective glue valve 10.
  • the ambient temperature could be measured, for example, with a corresponding temperature sensor 42, the a control line 43 to the controller, in particular to the higher-level controller 33, is connected.
  • the controller selects the setpoints or limit values necessary for the evaluation of the measured actual values in accordance with the temperature and / or the operating time and / or another parameter from a number of stored setpoint or limit values.
  • the actual values are compared with stored limit values, and that upon reaching the limit value or exceeding the same, the error signal is generated.
  • coil values of the respective glue valve 10 correspond to a temperature which is above a critical limit value. If, as part of the evaluation of the measured resistance values, it results that the actual temperature one of the valves above a critical temperature ⁇ krit . is located, the error signal is generated.
  • the controller compares the actual resistance values of the different glue valves 10 with one another.
  • the actual resistance value R 3 of the glue valve 10 represented by the characteristic curve K corresponds to a temperature value which deviates by a predetermined amount ⁇ from the actual temperature values of the other glue valves 10, which are determined from the resistance values R 1 , R measured correspondingly approximately at the same time 2 or R 4 can be derived using the curves I, J and L.
  • characteristic data for the individual glue valves 10 such as characteristic curves which describe a temperature behavior of the glue valves depending on measured coil resistances or depending on measured coil inductances, rotational angle of an adjusting screw of the valve 10, respectively in the respective valve 10 assigned, in particular arranged on these transponders 40 are deposited. These values can then each be queried by readers 41 connected to the controller and forwarded to the controller.

Landscapes

  • Magnetically Actuated Valves (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Claims (7)

  1. Procédé de détection automatique de la levée d'une valve à colle (10), en particulier d'une valve à colle (10) d'un dispositif de fabrication et/ou de conditionnement de cigarettes ou d'autres objets pouvant être fumés, la valve (10) comportant un composant (29) qui est formé au moins par endroits d'un matériau magnétisable et dont la position peut être modifiée pour régler la levée de la valve par rapport à un élément de fermeture (18) mobile à travers un électroaimant (14) de la valve (10) et qui est disposé de manière à se trouver dans la zone d'influence magnétique de l'électroaimant (14) de la valve (10), en particulier au moins par endroits à l'intérieur de la bobine (15) de celui-ci, la valeur d'inductance réelle de la bobine (15) de l'électroaimant (14) étant mesurée, en particulier lorsque la valve (10) est fermée, en tant que mesure de la position du composant (29) et donc en tant que mesure de la levée de valve réglée.
  2. Procédé selon la revendication 1, caractérisé en ce que la valve à colle (10) est actionnée cycliquement avec des phases de collage, dans lesquelles la valve (10) est ouverte pour distribuer de la colle, et des phases de repos dans lesquelles la valve (10) est fermée de sorte que la colle ne sorte pas, les valeurs réelles étant déterminées dans au moins une des phases de repos, de préférence dans une pluralité de phases de repos, de la valve à colle (10).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les valeurs d'inductance réelles de la valve (10) sont déterminées par mise en circulation d'un courant de mesure électrique approprié, de préférence à intensité variable, en particulier d'un courant alternatif, à travers l'au moins une bobine (15) de préférence pendant l'au moins une phase de repos de la valve (10).
  4. Procédé selon la revendication 3, caractérisé en ce que le courant de mesure est généré par un circuit résonant.
  5. Procédé selon l'une au moins des revendications 1 à 4, caractérisé en ce qu'un premier signal, de préférence optique, est généré en fonction de la valeur réelle de l'inductance de bobine mesurée, lequel signal représente une valeur de levée admissible pour la valve à colle (10), ou un deuxième signal, également de préférence optique, différent du premier, qui représente une valeur de levée non admissible pour la valve à colle (10).
  6. Procédé selon l'une au moins des revendications 1 à 5, caractérisé en ce que la valeur réelle mesurée de l'inductance de bobine ou une valeur, qui dépend de préférence linéairement de celle-ci, est indiquée particulièrement de manière optique, de préférence sur un écran.
  7. Procédé selon l'une au moins des revendications 1 à 6, caractérisé en ce que les valeurs de consigne de la grandeur de mesure, à partir desquelles la température peut être déduite, et/ou les valeurs de consigne de température et/ou les valeurs de consigne de l'inductance de la bobine et/ou le tableau ou le diagramme, dans lequel des valeurs de résistance de bobine sont associées à des valeurs de température de la valve à colle (10), sont lus à partir d'un transpondeur (40) disposé au niveau de la valve (10).
EP12007283.0A 2011-11-01 2012-10-23 Procédé de détection des pannes et de mesure de la course de soupape d'une vanne à colle Active EP2589437B1 (fr)

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CN103818116B (zh) * 2014-02-10 2015-11-25 宁波精宏数控科技有限公司 一种可自升降可调倾角的模块化点胶阀
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DE102020130472A1 (de) * 2020-11-18 2022-05-19 Focke & Co. (Gmbh & Co. Kg) Auftragsvorrichtung zum Aufbringen von fließfähigem Medium auf ein Substrat
CN112474198A (zh) * 2020-12-07 2021-03-12 滁州市云米工业设计有限公司 一种工业设计的灯具加工用点胶装置
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DE102011117295A1 (de) 2013-05-02

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