EP3765207A1 - Verfahren zur automatischen überwachung der leimabgabe eines leimventils - Google Patents
Verfahren zur automatischen überwachung der leimabgabe eines leimventilsInfo
- Publication number
- EP3765207A1 EP3765207A1 EP19711575.1A EP19711575A EP3765207A1 EP 3765207 A1 EP3765207 A1 EP 3765207A1 EP 19711575 A EP19711575 A EP 19711575A EP 3765207 A1 EP3765207 A1 EP 3765207A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitor
- glue
- field
- measurement signal
- glue valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003292 glue Substances 0.000 title claims abstract description 207
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 198
- 238000005259 measurement Methods 0.000 claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 6
- 238000012858 packaging process Methods 0.000 claims abstract description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 30
- 238000012806 monitoring device Methods 0.000 claims description 26
- 238000011156 evaluation Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 230000007613 environmental effect Effects 0.000 claims description 7
- 230000005684 electric field Effects 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 239000000758 substrate Substances 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
- B05B12/082—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 responsive to a condition of the discharged jet or spray, e.g. to jet shape, spray pattern or droplet size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
-
- 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
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent 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 automatically monitoring a glue valve during operation thereof.
- the invention further relates to a device for gluing products or material, in particular blanks or webs of material for the manufacture and / or packaging of cigarettes or other smokable objects, which can be monitored with such a monitoring method.
- Glue valves or gluing devices and gluing systems with glue valves are used in the packaging industry.
- an electric capacitor field is set up, in particular transversely or substantially transversely to the glue portion movement direction.
- this condenser field on their way from the Leimventilaustrittsdüse to the substrate or to the product to which they are to be applied, must pass through or have to move through it.
- the inventive method is preferably used to detect contamination of the outlet nozzle of the glue valve. It is based on the surprising finding of the Applicant that an existing within an electric capacitor field or in such a penetrating Leimportion the capacitor field influences such that adjusts a metrologically detectable change in the capacitance of the condenser field-based capacitor.
- the abovementioned metrological monitoring of the glue delivery of the glue valve takes place after one or each transmission of an opening signal for opening the glue valve to the glue valve, in particular within a predetermined period of time after the opening signal.
- an error signal is generated. Because the absence of such a disturbance indicates that - for example due to contamination of the glue valve - erroneously leaked despite the opening signal or opening of the glue valve Leimportion from the glue valve, which could have triggered such a capacitor field disturbance.
- it can preferably be determined whether the function of the glue valve is disturbed, in particular its (proper) glue delivery.
- at least one parameter characterizing the respective glue portion or the respective glue portion delivery may be determined. For example, the length of each delivered Leimportion or the speed, the direction of movement or the quality of such a Leimportion.
- the capacitor for example, an AC voltage which can be influenced by changes in the capacitance of the capacitor, the changes of which are caused by the change in the measured portion.
- the measuring signal according to a further preferred idea of the invention can be filtered in the context of the evaluation of the same by means of a suitable electronic filter device.
- a characteristic measurement signal change is contained in the measurement signal, which can be assigned to a capacity fraction of the capacitor influencing (due to the opening signal from the glue valve) Leimportion. This preferably takes place within a predetermined period of time which begins after the transmission of an opening signal for opening the glue valve to the glue valve, preferably within 3 milliseconds. In the event that such, characteristic Measurement signal change is not included in the measurement signal, then an error signal is generated.
- the time interval can be determined between an opening signal for opening the glue valve and a characteristic measurement signal change that can be assigned to the entry of a glue portion (emitted from the glue valve on the basis of the opening signal) into the capacitor field.
- the time span can be determined between a first characteristic change in the measurement signal attributable to the entry of the glue portion into the condenser field and a second characteristic change in the measurement signal assignable to the exit of the glue portion from the condenser field.
- the length of the same can then be calculated, for example.
- At least one measured signal value of a characteristic measuring signal change in the measuring signal is compared with a limit value (stored in a memory) for such a measuring signal change. If this limit value is exceeded or undershot, then an error signal can be generated.
- an inhomogeneous capacitor field generated by a ring capacitor is constructed below the Leimventilaustrittsdüse so that leaking from the glue Leimportionen these two capacitor fields must pass.
- the ring capacitor is preferably oriented in such a way that its center axis is aligned with the center axis of the glue outlet nozzle of the glue valve.
- the aforementioned condenser field / the aforementioned condenser fields can / can be constructed such that erroneously emerging obliquely from the Leimventilaustrittsdüse, condenser field / the condenser fields corresponding obliquely passing Leimportionen cause a significantly different characteristic measurement signal than coaxial or parallel to the (longitudinal) central axis of the Leimventilaustrittsdüse from this exiting, the condenser field / the condenser fields according to vertically passing Leimportionen.
- the capacitor fields of the two pairs of capacitor plates can also be constructed such that the electric field strength of both capacitor fields increases perpendicular to the central axis of the Leimventilaustrittsdüse, but in mutually perpendicular directions.
- the capacitor field of the ring capacitor is preferably constructed such that the electric field strength increases from the (longitudinal) central axis of the ring capacitor in any radial direction perpendicular to this central axis.
- a possible oblique to the central axis of Leimventilaustrittsdüse extending trajectory of Leimportion can be determined.
- a characteristic set measurement signal change stored in a memory
- an error signal can be generated.
- the condenser field below the glue exit nozzle runs transversely to the direction of movement of the glue portion and is constructed inhomogeneous such that the field strength of the condenser field in the direction of movement of the glue portions or parallel thereto (from top to bottom or from bottom to top) in particular continuously becomes stronger or weaker, so that the Leimportionen passing condenser field depending on the depth of penetration into the condenser field cause different characteristic measurement signal changes.
- the penetration depth of the assigned or the glue fraction which has leaked out of the glue exit nozzle into the condenser field is determined.
- a reference capacitor field of a reference capacitor assigned to the capacitor or the capacitor field underneath the glue outlet nozzle is constructed in such a way that no glue portions can pass the reference capacitor field from the glue outlet nozzle.
- the reference capacitor field is monitored by measurement as to whether an ambient disturbance of the reference capacitor field which alters the capacitance of the reference capacitor occurs. In the event that such an environmental disturbance is detected, this environmental disturbance is filtered out of a measurement signal which is detected at the time of occurrence of the environmental disturbance in the context of the metrological monitoring of the arranged below the glue outlet nozzle capacitor or the capacitor array.
- a device for gluing products or material has at least one glue valve for applying glue portions to the respective product or the respective material and one according to claim 21
- Monitoring device for automatically monitoring the glue delivery of a glue valve during its operation. This particular, to detect contamination of the outlet nozzle of the glue valve.
- the monitoring device has a capacitor arranged below the outlet nozzle of the glue valve, by means of which an electric capacitor array arranged in particular transversely or substantially transversely to the glue-portion movement direction of the glue valve can be built up, so that glue portions emerging from the glue valve must pass through the condenser field. With the monitoring device is metrologically monitored whether a capacitance of the capacitor changing disturbance of the capacitor field occurs.
- Fig. 1 is an oblique view of a first embodiment of a
- Fig. 2 is a diagram in which the time-dependent course of one of the
- Fig. 3 is a gluing device according to FIG. 1, but with zoomed closer to the outlet nozzle of the glue valve
- FIG. 4 a of the monitoring device of FIG. 3 associated
- FIG. 5 shows the gluing device from FIG. 3 at a later point in time at which the glue portion dispensed from the glue outlet nozzle is located centrally in the condenser field
- FIG. 6 shows a measurement signal diagram associated with the situation in FIG. 5 (analogous to FIG. 4), FIG.
- FIG. 7 shows the gluing device of FIGS. 3 and 5 at a point in time at which the glue portion has already left or has left the condenser field
- Fig. 8 is a of the situation of the gluing device in Fig. 7 associated
- Fig. 9 is a symbolization of a through the capacitor field of
- FIG. 11 shows a diagram associated with the gluing device in FIG. 10, which symbolizes a location dependency of recorded measuring signals
- Fig. 12 shows a symbolization of a construction of palelloses
- Fig. 13 shows a further embodiment of an inventive
- Gluing device with two pairs of stacked capacitor plates, each with mutually perpendicular capacitor fields, wherein the capacitors of each pair are each arranged at an angle to each other or are inclined,
- Fig. 14 two generated by means of two pairs of ring capacitors
- FIG. 15 shows a diagram associated with the capacitor fields of FIG. 10, which symbolizes a position dependency of recorded measurement signals
- FIG. 16 shows the representation of a typical measurement signal curve with a characteristic detected by the monitoring device of a gluing device according to the invention
- Measuring signal change which is due to a disturbance of the corresponding capacitor field by a Leimportion, by a arranged below the glue valve condenser is generated, and corresponding thereto an opening or control signal for a glue valve of the gluing device,
- 17 is a diagram representation of a measurement signal waveform accordingly
- Measuring signal from FIG. 16 has been corrected for the interference signal from FIG. 17,
- a gluing device 10 which serves for applying individual glue portions on substrates, not shown, as on blanks or webs for the manufacture and / or packaging of cigarettes or other smokable objects.
- the gluing device 10 comprises (at least) a glue valve 11 with glue valve outlet nozzle 12, which is controllable by means of a control device, not shown, but usually not necessarily designed as a solenoid valve.
- the glue valve 11 From the glue valve outlet nozzle 12, individual glue portions can be dispensed down onto the respective substrate.
- the glue valve 11 at certain times (electrical) opening signals are given, which lead to a - for example by means of an electromagnet - movable closure member of the glue valve 11 from a closed position in which it closes a (lower) nozzle opening 12a of Leimventilaustrittsdüse 12 , moved to an open position is, in which it releases the nozzle opening, so that single Leimportionen 13 can be discharged downwards out of the opening.
- the closure member By means of a return member, for example by means of a spring or by repelling permanent magnets, the closure member is then automatically moved back into the closed position and held there.
- a return member for example by means of a spring or by repelling permanent magnets
- the gluing device 10 is usually integrated in a higher-level production process, for example in a packaging process. Accordingly, the glue valve opening signals are synchronized with the packaging process. For example, the glue valve 11 is opened or closed again synchronously with or in a higher-level machine cycle of a machine to which the glue valve 11 is assigned. Frequently, the gluing device 10 comprises a plurality of glue valves 11 arranged next to one another. However, this does not have to be the case.
- the gluing device 10 has a monitoring device 14, with which the respective glue dispensing is monitored automatically in a special way during the production process.
- the monitoring device 14 has, for one thing, a condenser 15 (open from top to bottom) arranged below the glue outlet nozzle 12, which can build up a condenser field 16 extending transversely to the glue outlet direction or oriented horizontally.
- the capacitor 15 has two spaced (parallel) or arranged in parallel vertical planes (flat) capacitor plates 15a and 15b.
- the capacitor 15 or its capacitor plates 15a, 15b are positioned such that the capacitor array 16 is arranged between them so that glue portions 13, which emerge properly, from the glue valve 11 and from the glue outlet nozzle 12 on their way down to the Substrate imperatively entering the capacitor array 16, this happen and again have to emerge from this before they then fall to the arranged below the capacitor plates 15 a, 15 b or below the capacitor array 16 substrate.
- the capacitor array 16 is preferably aligned transversely to the Leimportionsschisraum.
- the monitoring device 14 further has a suitable measuring electronics 17, which is connected to the capacitor 15.
- a measuring voltage U can be applied to the capacitor plates 15a, 15b.
- a suitable alternating voltage is applied for this purpose, so that the orientation of the capacitor field 16 changes accordingly.
- the measuring electronics in the present case comprises a frequency generator 17a.
- the actual voltage between the capacitor plates 15a, 15b, which can be influenced by the glue portions 16 passing through the capacitor field 16, is detected as the actual measuring signal.
- the measuring electronics 17 further includes a filter circuit 17b, which processes the actual measuring signal in a suitable manner, in particular frees of alternating voltage components generated by the frequency generator 17a.
- the measuring electronics 17 can also be designed differently. For example, could be dispensed with a frequency generator 17a and be operated with DC voltage. In this case, if necessary, the filter circuit 17b would be omitted.
- the monitoring device 14, in particular the capacitor array 16 and the measuring electronics 17, is designed such that glue portions 13 which pass through the field 16 lead to a characteristic change of the measuring signal respectively detected by the measuring electronics or generate a characteristic measuring signal.
- FIG. 2 shows an example of an already processed measuring signal 18 over time t, namely a measuring voltage U.
- a control signal 19 or an opening signal for opening the glue valve 11 is also shown in the diagram.
- the opening signal 19 of the glue valve 11 causes a characteristic signal change Si in the measuring signal 18 at the time h.
- the background is that the electromagnetic field of the electromagnet of the glue valve 11 leads to a first disturbance of the capacitor field 16, resulting in a change in capacitance of the capacitor 15 and consequently precipitates in the characteristic signal change Si.
- one or the glue drops 13 are released from the glue valve 11 and subsequently enter the condenser field 16.
- a characteristic signal change S 2 in the measuring signal 18 can be seen, which is due to the disturbance of the capacitor field 16 by the capacitor portion 16 passing glue proportion 13.
- this disturbance or the characteristic signal change S 2 is detected as part of the (automatic) evaluation of the measurement signal U.
- the evaluation of the measurement signal U can be carried out, for example, with a corresponding evaluation electronics (or a corresponding evaluation computer) of the monitoring device 14.
- the characteristic signal disturbance S 2 has occurred within a predetermined time window, which is set in the monitoring device 14.
- the monitoring device generates an error signal that can be displayed, for example, on a screen.
- the gluing device 10 has been somewhat modified from Fig. 1. Namely, inasmuch as the condenser 15 disposed below the glue discharge nozzle 12 has been moved closer to the glue valve discharge nozzle 12.
- the signal change S 2 naturally also occurs at an earlier point in time t 2 than in the embodiment of FIG. 1, since the entry of the glue drop 13 into the capacitor field 16 takes place correspondingly earlier.
- the gluing device 10 in FIGS. 5 and 7 corresponds to that of FIG. 3. It can be clearly seen that different spatial positions of the dispensed glue portion 13 shown in FIGS. 5 and 7 relative to the condenser field 16 are assigned to corresponding measured signal values Time t 2 correspond:
- the glue drop 13 has arrived at the time t 2 on its way through the capacitor array 16 (from top to bottom) substantially in the center of the capacitor array 16. Based on the measurement signal 18, this corresponds to a position at the end of the rising edge of the characteristic signal change S 2 .
- the glue drop 13 has already completely passed through the capacitor array 16 at time t 2 and has again exited from the capacitor array 16 below it. This corresponds to a correspondingly later position on the measurement signal 18 and a measurement signal value which corresponds to a measurement signal value in an undisturbed state of the capacitor 15 (outside the characteristic signal change S 2 ).
- the characteristic signal change S 2 comprises in FIG. 9, for example at times t s and t 3, two low points which correspond to the beginning (t 2 ) of a rising side edge of the signal change S 2 or to the end (t 3 ) of a falling side edge.
- the time t 2 corresponds to the time of entry of the glue portion 13 in the capacitor array 16, the time t 3 the time of the exit of the glue portion 13 from the capacitor array 16th
- envelope limit curves 20a, 20b are used with which the measurement signal 18 and in particular the characteristic signal change S 2 are compared.
- a waveform 18 located between one or the upper envelope 20a and one or lower envelope 20b, cf. Fig. 9, is evaluated by the monitoring device 14 as correct or error-free.
- the measurement signal 18 or the characteristic measurement signal change S 2 leaves the range between the envelope limit curves 20a, 20b or exceeds the upper envelope limit curve 20a or falls below the lower envelope limit curve 20b, this could be interpreted as an error by the monitoring device and an error signal generated.
- Such an error could, for example, indicate a lack of quality of the glue portion 13. For example, due to contamination of the glue outlet nozzle 12, which indeed reduces the quality of the respectively delivered glue portion 13, but does not yet result in the glue delivery of glue drops 13 coming to a complete standstill.
- the length of the respective glue portion 13 could be calculated in a further step.
- the speed of the glue portion 13 would have to be determined. This would be easily possible because the distance between the Leimventilaustrittsdüse 12 and the capacitor array 16 is known.
- the time difference trt 2 is known between the actuation of the glue valve 11 and the entry of the glue portion 13 into the condenser field 16. By way of this, the speed of the glue portion 13 can then be calculated. On the basis of this speed and the time difference t2-t 3 between entry and exit of the glue portion 13, it is then possible to deduce the respective length of the glue portion 13.
- FIGS. 10 and 11 show, by way of example, a gluing device 10 in which the condenser field 16 is inhomogeneous, decreasing in thickness from top to bottom.
- this is achieved by the fact that the capacitor plates 15a, 15b are not aligned in parallel, spaced apart vertical planes, but are set at an angle to each other, so that the distance between them - in the present case - increases from top to bottom.
- the distance decreases from top to bottom, so that the capacitor field strength is correspondingly larger from top to bottom.
- capacitor plates 15a, 15b are arranged in parallel. However, they consist of a composite material.
- An electrically active capacitor material 21 of the capacitor plates 15a, 15b decreases continuously in its respective thickness from top to bottom (or vice versa from top to bottom), so that in the result the same from top to bottom weakening field as in the capacitor 15 of FIG.
- FIG. 13 shows an embodiment of the gluing device 10 in which, for the biaxial determination of the position of the respective dispensed glue portion 13, two condenser fields 16a, 16b below the glue exit nozzle
- the capacitor array 16a is generated by a capacitor 15 with capacitor plates 15a, 15b.
- the capacitor array 16b through a capacitor 24 with capacitor plates 24a, 24b.
- the first capacitor array 16a extends above the second capacitor array 16b, in the present case transversely to the capacitor array 16b.
- Both capacitor fields 16a, 16b are constructed inhomogeneous. In such a way that the electric field strength of both capacitor fields 16a, 16b respectively increases perpendicularly to the central axis of the Leimventilaustrittsdüse 12, but in mutually perpendicular directions.
- This structure can be used to detect the respective direction of flight of the respective glue portion 13 after exiting the glue valve outlet nozzle 12. In particular, deviations of the direction of flight from one or the desired direction of flight, which coincides with the center axis of the glue valve outlet nozzle 12, can be detected.
- FIG. 14 shows an example of a variant of a capacitor array 16 in which a pair of rings 15a ', 15b' of a ring capacitor 15 arranged in parallel, spaced-apart planes (one above the other) are used to construct the same.
- the capacitor rings 15a ', 15b' lie in the z-direction one above the other in spaced apart horizontal planes and are each arranged with their longitudinal central axes coaxial or parallel to the longitudinal central axis of the Leimaustrittsdüse 12.
- the rings 15a ', 15b' each have a conical geometry, whereby the material thickness thereof increases towards the outer edge.
- FIG. 15 shows the strength of such a disturbance or a corresponding characteristic measurement signal change as a function of the radial distance r from the center of the respective capacitor rings 15a 'or 15b'.
- one or more capacitors 15 and 24, which are respectively used in the gluing device 10 and the monitoring device 14 one or optionally a plurality of identically constructed reference capacitors immediately adjacent to the / respective capacitors) 15 and 24 build or arrange.
- the reference capacitor field (s) are then used to filter out any environmental disturbances from the measurement signal 18.
- FIG. 16 shows a measuring signal 18, which can be measured without such a reference capacitor in the respective capacitor 15 or 24 arranged below the glue valve 11.
- FIG. 17 shows a measurement signal 18 ', as would be measured at the same time in a corresponding, adjacent reference capacitor or possibly in a plurality of reference capacitors.
- the measurement signal 18 ' forms the disturbing influences of the environment.
- FIG. 18 shows a measuring signal 18 "which has been adjusted correspondingly to the disturbing influences 18 '.
- glue residues can deposit on the glue valve outlet nozzle 12. This can result in individual glue portions 13 later being released from the glue valve outlet nozzle 12 or emerging from it than would be the case with fault-free operation or without an uncleaned glue valve outlet nozzle 12. The value of this time delay in turn depends on the degree of contamination of the glue outlet nozzle.
- FIG. 19 shows a first characteristic measurement signal change S 2 at time t 2 , as may occur in each case in cycles, when the glue valve 11 operates properly and is not contaminated.
- a signal change S 2 ⁇ is shown, which would occur at the time t 2 ⁇ after the glue valve 11 is in operation for a certain time. From the time difference between t 2 and t 2 ⁇ can be concluded with the help of stored calibration values on the degree of contamination of the glue valve 11.
- Another scenario relates to the deposition of glue residues during operation of the monitoring device 14 at the respective capacitor plate / capacitor rings 15a, 15b; 15a ', 15b' and 24a, 24b, respectively. Due to the relative proximity of the capacitor plates / capacitor rings 15a, 15b; 15a ', 15b' and 24a, 24b, respectively, to the glue valve exit nozzle 12, glue spatters may be applied to the respective capacitor plate / condenser ring 15a, 15b; 15a ', 15b' and 24a, 24b arrive. In particular, also due to an oblique direction of flight of the respective glue portion 13.
Landscapes
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018002129.8A DE102018002129A1 (de) | 2018-03-16 | 2018-03-16 | Verfahren zur automatischen Überwachung der Leimabgabe eines Leimventils |
PCT/EP2019/056476 WO2019175343A1 (de) | 2018-03-16 | 2019-03-14 | Verfahren zur automatischen überwachung der leimabgabe eines leimventils |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3765207A1 true EP3765207A1 (de) | 2021-01-20 |
EP3765207B1 EP3765207B1 (de) | 2024-04-03 |
Family
ID=65812316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19711575.1A Active EP3765207B1 (de) | 2018-03-16 | 2019-03-14 | Verfahren zur automatischen überwachung der leimabgabe eines leimventils |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3765207B1 (de) |
DE (1) | DE102018002129A1 (de) |
WO (1) | WO2019175343A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111085359B (zh) * | 2019-12-31 | 2021-06-15 | 北京航空航天大学 | 用于喷涂的流体引导装置、喷涂系统及喷涂方法 |
CN111229548A (zh) * | 2020-03-17 | 2020-06-05 | 欣辰卓锐(苏州)智能装备有限公司 | 一种基于流水线的自动跟踪点胶系统 |
CN111751373A (zh) * | 2020-07-03 | 2020-10-09 | 深圳市轴心自控技术有限公司 | 一种用于点胶设备的防挂胶检测方法 |
CN115634803B (zh) * | 2022-10-31 | 2023-10-13 | 江西中烟工业有限责任公司 | 一种颗粒型加热不燃烧卷烟封口罐装生产线中的涂胶装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3225554A1 (de) * | 1982-07-08 | 1984-01-12 | Robert Bosch Gmbh, 7000 Stuttgart | Messeinrichtung fuer fluidstrahlen |
DE3722059C1 (en) * | 1987-07-03 | 1988-08-25 | Bosch Gmbh Robert | Measuring device for fluid jets |
DE3934852A1 (de) * | 1989-10-19 | 1991-04-25 | Macon Gmbh Klebstoff Auftragsg | Einrichtung zur ueberwachung eines auftrags auf ein substrat |
DE4304678C1 (de) * | 1993-02-16 | 1994-07-21 | Kurandt System Gmbh | Verfahren zum kontinuierlichen Abtasten und Überprüfen von Spurauftragungen auf einer bewegten Unterlage und Vorrichtung zur Durchführung des Verfahrens |
DE19842266B4 (de) * | 1998-09-15 | 2004-11-04 | Windmöller & Hölscher Kg | Verfahren zum Steuern von Klebstoffaufträgen auf kontinuierlich bewegte Sack- oder Beutelwerkstücke |
DE10032205A1 (de) * | 2000-07-01 | 2002-01-10 | Juergen Hosbach | Verfahren zum Erkennen von Massenveränderungen längs eines Produktes |
DE102015117248A1 (de) * | 2015-10-09 | 2017-04-13 | Vermes Microdispensing GmbH | Tropfendetektionseinrichtung |
DE102016014951A1 (de) * | 2016-12-14 | 2018-06-14 | Dürr Systems Ag | Beschichtungseinrichtung und zugehöriges Betriebsverfahren |
-
2018
- 2018-03-16 DE DE102018002129.8A patent/DE102018002129A1/de active Pending
-
2019
- 2019-03-14 EP EP19711575.1A patent/EP3765207B1/de active Active
- 2019-03-14 WO PCT/EP2019/056476 patent/WO2019175343A1/de active Application Filing
Also Published As
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DE102018002129A1 (de) | 2019-09-19 |
EP3765207B1 (de) | 2024-04-03 |
WO2019175343A1 (de) | 2019-09-19 |
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