EP3679434A1 - Method for producing containers on a production line, with adaptation of the production rate in the event of an incident on the line - Google Patents
Method for producing containers on a production line, with adaptation of the production rate in the event of an incident on the lineInfo
- Publication number
- EP3679434A1 EP3679434A1 EP18749823.3A EP18749823A EP3679434A1 EP 3679434 A1 EP3679434 A1 EP 3679434A1 EP 18749823 A EP18749823 A EP 18749823A EP 3679434 A1 EP3679434 A1 EP 3679434A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- rate
- labeling
- containers
- reduction
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 230000006978 adaptation Effects 0.000 title description 2
- 238000002372 labelling Methods 0.000 claims abstract description 57
- 238000012546 transfer Methods 0.000 claims abstract description 45
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000003750 conditioning effect Effects 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 34
- 238000012545 processing Methods 0.000 claims description 26
- 238000009825 accumulation Methods 0.000 claims description 15
- 230000001133 acceleration Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4189—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32219—Slow down production after failure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Definitions
- the invention relates to the handling of articles; it relates, more specifically, a method of controlling an article handling facility.
- Such an installation is conventionally equipped, on the one hand, with at least one article transport system, which comprises at least one mobile support for the articles and a motorization coupled to this support for moving it along a path of travel. transport, and, secondly, an electronic or computer control unit connected to the engine and programmed to drive it according to a predetermined speed setpoint, proportional to a rate of transport of articles provided by the installation.
- article transport system which comprises at least one mobile support for the articles and a motorization coupled to this support for moving it along a path of travel. transport, and, secondly, an electronic or computer control unit connected to the engine and programmed to drive it according to a predetermined speed setpoint, proportional to a rate of transport of articles provided by the installation.
- An example of application is the manufacture of containers from plastic blanks.
- This manufacture is ordinarily carried out within a production line comprising at least:
- control unit which controls the thermal conditioning unit, the forming unit and the transfer unit, the transfer unit and the labeling or filling unit by imposing a speed setpoint on each of them proportional to a rate of production of the containers.
- the line is at a standstill; in this way, the containers are not manufactured and the production, which, on an ordinary line of which the forming unit is equipped with twenty molds usually reaches several tens of thousands of containers per hour, is interrupted.
- One objective is to allow, as far as possible, a maintenance of production even if an incident affects the installation.
- An article transport system which includes at least one movable support and a motor, coupled to the movable support for moving the same along a transport path;
- a control unit connected to the engine and programmed to drive it according to a predetermined speed setpoint, proportional to a rate of transport of articles provided by the installation;
- the articles are containers and wherein the container transport system is a labeling unit comprising a carousel provided with a plurality of processing stations, and a plurality of peripheral labeling devices.
- the following operations are planned:
- the transport system is a transfer unit equipped with a linear conveyor which extends from an entry point to an exit point, and sensors each able to detect an accumulation of items on the conveyor, are provided the operations of:
- processing units namely at least one thermal conditioning unit of the blanks and at least one forming unit of the containers from the heat-conditioned blanks;
- control unit which controls at least the thermal conditioning unit, the forming unit and the transfer unit by imposing on each a speed instruction proportional to a rate of production of the containers;
- the following operations are provided: detect the end of the incident;
- the increase of the speed setpoints can be effected by an acceleration whose force is inversely proportional to the deceleration induced by the reduction of the speed reference following the reduction of the rate.
- FIG. 1 is a schematic view showing part of a container production line from plastic blanks
- FIG. 2 is a schematic view showing another part of the container production line
- FIG. 3 is a schematic view showing still another part of the container production line.
- an article transport system which comprises at least one movable support and an actuator coupled to the movable support for moving the same along a transport path;
- control unit connected to the engine and programmed to drive it according to a predetermined speed setpoint, proportional to a rate of transport of articles provided by the installation.
- the articles are for example hollow bodies; it may especially be containers 2 or blanks 3 (eg preforms) of containers.
- the installation 1 is a container production plant 2 from blanks 3 of plastic (such as PET).
- This installation 1 comprises several processing units, namely at least:
- the installation 1 also comprises at least one unit 8, 9 for transferring the containers 2 formed to the filling unit 6 or the labeling unit 7.
- the thermal conditioning unit 4, the forming unit 5, the filling unit 6, the labeling unit 7 and each transfer unit 8, 9 can each be considered as a transport system, to which be associated with a function applied to blanks 3 (eg thermal conditioning) or containers 2 (eg forming, filling or labeling).
- the thermal conditioning unit 4, the forming unit 5, the filling unit 6, the labeling unit 7 and each transfer unit 8, 9 each comprise at least one mobile support and one motor coupled to the movable support for moving it along a transport path T.
- the thermal conditioning unit 4 is equipped with a chain 10 provided with links each carrying a support 11 (called a spinner) from which a blank 3 is suspended.
- This chain 10 circulates on wheels 12, at least one of which is driven by a motorisation 13.
- the forming unit 5 is equipped with a carousel 14 on which are mounted molds 15 with the impression of a container model, in each of which a blank 3 having undergone a prior thermal conditioning is introduced to be formed therein. this impression by injection of a gas (usually air) under pressure.
- the forming unit 5 is equipped, for each mold 15, with an injection device 16 comprising at least one solenoid valve 17.
- the carousel 14 is driven in cyclic rotation by a motorization 18.
- the filling unit 6 is also equipped with a carousel 19 on which are mounted filling stations each provided with a filling valve 21 through which a content (liquid, pasty or even powdery) is introduced into a container 2 .
- This carousel 19 is also rotated by a motor 22.
- the labeling unit 7 is also equipped with a carousel 23 provided with a plurality of processing stations 24 each suitable for receiving a receptacle 2, and several peripheral labeling devices.
- Each processing station 24 is configured to hold a container 2 and to rotate it about its own axis while moving it to the right of a peripheral labeling device.
- This carousel 23 is also rotated by a motor 26.
- Each labeling device provides for the labeling of a portion of the containers 2.
- the labeling unit 7 is equipped with three labeling devices which each ensure the labeling of one third of the containers 2.
- each labeling device comprises a unwinder 27 on which is mounted a spool 28 including a label-carrying film 29 wound on itself, an applicator roll tangent to the carousel 23 and on which circulates the film 29 to allow the winding of a label on a container 2, and, where appropriate, one or more roller (s) 31 intermediate (s) of tension and / or guide the film 29, interposed (s) between the unwinder 27 and the applicator roll.
- the labeling unit 7 is advantageously equipped, for each labeling device, with a sensor 32 (eg optical) capable of detecting an unavailability (and therefore a failure) of the device.
- labeling device - most commonly the depletion of the film 29 (eg by depletion of the coil).
- a linear type transfer unit 8 is shown in FIG.
- This transfer unit 8 comprises a linear conveyor 33.
- the conveyor 33 is e.g. belt, carpet or roller.
- the conveyor 33 extends from an entry point E to an exit point S.
- the containers 2 are taken care of at the outlet of an upstream processing unit (eg the forming unit 5).
- the containers 2 can be directly taken care of by a processing unit (eg the filling unit 6 or the labeling unit 7), or by a device 34 for setting that gradually space the containers 2 by a predetermined distance corresponding to the spacing between two successive processing stations on the processing unit placed downstream of the transfer unit 8.
- the device 34 for setting the pitch is of the worm type.
- it comprises two adjacent rollers provided with symmetrical helical grooves 36 which together form a series of cells 37 each enclosing a container 2 to accelerate it as the rollers 35 rotate.
- the linear transfer unit 8 is provided with a motor 38A driving the conveyor 33.
- the transfer unit 8 is also provided with a motor 38B driving the device 34 for setting.
- This linear type transfer unit 8 can fulfill a function of temporarily accumulating the articles (here containers 2) to form a buffer stock intended to absorb any speed differentials between machines located upstream (for example forming unit 5) and downstream machines (eg the labeling unit 7).
- a rotary type transfer unit 9 is shown in FIG.
- This transfer unit 9 comprises a wheel 39 and a plurality of gripping members 40 (here clamps) mounted on the wheel 39 at a periphery thereof.
- the wheel 39 is secured to a shaft driven in cyclic rotation by a motor 26.
- the transfer unit 9 is coupled to the labeling unit 7.
- the carousel 23 of the labeling unit 7 and the wheel 39 of the transfer unit can be driven by a common motor 26, e.g. via pulleys and belts.
- rotary type transfer units 9 are schematically illustrated in dashed line in FIG. These transfer units 9 are interposed, in this example, on the one hand between the forming unit 5 and the filling unit 6, on the other hand between the filling unit 6 and a linear transfer unit 8, downstream of which the labeling unit 7 can be located.
- a transfer unit 9 is preferably interposed between the linear transfer unit 8 and the labeling unit 7.
- the containers 2 set at the exit S of the linear transfer unit 8 are taken at constant intervals by the rotary transfer unit 9 and delivered to the carousel 23 of the labeling unit 7.
- the installation 1 further comprises a control unit 41 which controls the installation 1.
- control unit 41 controls at least the thermal conditioning unit 4, the forming unit 5 and the transfer unit 8, 9 (or each transfer unit 8, 9) by imposing on them each a speed instruction proportional to a rate of production of the containers 2.
- control unit 41 also controls the filling unit 6 and the labeling unit 7, to each of which it also imposes a speed instruction proportional to the production rate of the containers 2.
- control unit 41 is connected to the engines that drive the processing units (or transfer), which it controls the speed (linear or rotation).
- the rate of production is the number of containers 2 produced (or items handled) per unit of time (eg per hour). It is therefore a flow.
- the rate of production is identical for each processing unit, that is to say that the flow rates of the containers 2 leaving the different processing units are identical. There may, however, be some variations which, as discussed, may be temporarily absorbed by accumulating the containers 2 in buffer storage areas (in this case, in the linear transfer unit 8 shown in FIG. .2).
- each processing or transfer unit is associated, in a memory of the control unit 41, with a speed command to be applied to the engine animating this processing unit or transfer to enable it to meet a predetermined production rate.
- the control unit 41 is programmed to carry out actions making it possible to maintain production, even at a reduced rate, including in the event of an incident affecting the (normal) operation of the installation 1.
- control unit 41 is programmed to: detect an incident affecting the operation of the installation 1; determine a reduction in the production rate induced by the incident;
- the forming unit 5 is e.g. equipped with pressure sensors (or flow) on each injection device 16. These sensors are connected to the control unit 41 to which they communicate the instantaneous value of the pressure (or flow) of fluid flowing in the corresponding device 16.
- the filling unit 6 is e.g. equipped with flow sensors for each filling station 20. These sensors are connected to the control unit 41 to which they communicate the instantaneous value of the flow of fluid flowing in the corresponding filling valve 21.
- the sensors 32 already mentioned are connected to the control unit 41 to which they communicate at each instant information relating to the mass or volume of the coil 28 present on each unwinder 27.
- a degraded processing unit located downstream of the linear transfer unit 8 may cause accumulation of containers 2 on the conveyor 33.
- shown in dashed lines in FIG. accumulation can be achieved in the linear transfer unit 8, corresponding to respective respective reductions in the rate of production.
- the linear transfer unit 8 is equipped with sensors C1, C2, C3 (for example optical), connected to the control unit 41 to which each address information about the presence ( or not) of articles (here of containers 2).
- the control unit 41 is then programmed to determine a reduction in the rate of production proportional to the level of accumulation achieved.
- the control unit 41 is programmed, first of all, to determine a reduction in the speed applied to the motor 38A (and, if appropriate, to the motor 38B) a rate proportional to the level of accumulation reached (c '). that is, detected by at least one sensor C1, C2, C3).
- control unit 41 can be programmed to determine a reduction in the production rate (and above all the speed of the motor 38A):
- a low rate typically 20% when the accumulation reaches a first low level (detected by the sensor C1 shown on the left in FIG. 2);
- an average rate typically 40% when the accumulation reaches a second average level (detected by the C2 sensor shown in the center in FIG.2); a high rate (typically 80%) when the accumulation reaches a third high level (detected by the C3 sensor shown on the right in FIG.2).
- the control unit 41 is programmed so that, once the cadence reduction induced by the detected incident (directly or indirectly) has been calculated, this reduction can be applied to the speed setpoint of each processing (or transfer) unit.
- the actual production rate is adjusted to the rate calculated by the control unit 41 taking into account the reduction induced by the incident.
- the reduction of the production rate consists, for the labeling unit 7, in performing the following operations:
- the shunt of each unavailable tagging device is e.g. to move the roller 30 away from the path of the containers 2 (i.e. carousel 23).
- the roller 30 is advantageously mounted on a mobile support (in translation or in rotation) whose movement is controlled by the control unit 41.
- control unit 41 passes this reduction in rate to the other processing units (and transfer units) by reducing their respective speeds by the same rate.
- the control unit 41 When the incident is over, the control unit 41 is informed.
- the control unit 41 receives from the corresponding sensor C1, C2 or C3 a characteristic signal of the availability of the labeling device (s) (and, in this case, the presence of a coil 28 full), so that the labeling unit 7 can again (with the rest of the installation 1) run at full speed.
- the control unit 41 consequently increases the speed commands of the processing (or transfer) units to their respective nominal values (corresponding to the normal production), so as to increase the rate of production up to its nominal value ( corresponding to normal production).
- the force of the acceleration controlled on each processing unit (or transfer unit) by the control unit 41 may be inversely proportional to the deceleration force commanded on each processing unit during the decrease in the imposed rate. by the incident.
- this acceleration can be:
- Tests conducted on a container production facility 1 2 has shown the efficiency of the control method described above, which allows not only to maintain production (admittedly at a reduced rate) but also to maintain a good quality of the containers 2 products.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Labeling Devices (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Control Of Conveyors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758218A FR3070679B1 (en) | 2017-09-06 | 2017-09-06 | PROCESS FOR MANUFACTURING CONTAINERS WITHIN A PRODUCTION LINE, WITH ADAPTATION OF THE PRODUCTION RATE TO AN INCIDENT ON THE LINE |
PCT/EP2018/071755 WO2019048181A1 (en) | 2017-09-06 | 2018-08-10 | Method for producing containers on a production line, with adaptation of the production rate in the event of an incident on the line |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3679434A1 true EP3679434A1 (en) | 2020-07-15 |
Family
ID=60138575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18749823.3A Pending EP3679434A1 (en) | 2017-09-06 | 2018-08-10 | Method for producing containers on a production line, with adaptation of the production rate in the event of an incident on the line |
Country Status (5)
Country | Link |
---|---|
US (1) | US11698629B2 (en) |
EP (1) | EP3679434A1 (en) |
CN (1) | CN111065978B (en) |
FR (1) | FR3070679B1 (en) |
WO (1) | WO2019048181A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115196275A (en) * | 2022-06-27 | 2022-10-18 | 武汉逸飞激光股份有限公司 | Speed adjusting method, device, equipment, storage medium and multilayer conveying line thereof |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1602197A (en) * | 1968-01-15 | 1970-10-19 | ||
DE4428242C2 (en) * | 1994-08-10 | 1999-09-30 | Etifix Etikettiersysteme Gmbh | Automatic labeling method and system |
FR2732002B1 (en) * | 1995-03-23 | 1997-06-06 | Sidel Sa | ONLINE BOTTLING PLANT |
WO2007130019A1 (en) * | 2006-05-01 | 2007-11-15 | Thomson Licensing | Method, apparatus and system for reducing waste in production systems |
DE102011017448A1 (en) * | 2011-04-18 | 2012-10-18 | Krones Aktiengesellschaft | Method for operating a container treatment plant with fault diagnosis |
US20140200696A1 (en) * | 2013-01-11 | 2014-07-17 | J&L Group International, Llc | Process flow optimization in manufacturing |
DE202013001238U1 (en) | 2013-02-11 | 2014-06-25 | Big Dutchman International Gmbh | Control device for an egg conveyor belt |
DE102013205351A1 (en) * | 2013-03-26 | 2014-10-02 | Krones Ag | Device for labeling of vessels and method for controlling the device for labeling of vessels |
DE102013112992A1 (en) * | 2013-11-25 | 2015-05-28 | Khs Gmbh | Method for controlling a labeling machine or at least one labeling unit of a container treatment plant, labeling unit and container treatment plant |
DE102014010862B4 (en) * | 2014-07-25 | 2021-01-07 | Khs Corpoplast Gmbh | Method and device for transporting preforms |
DE102015209367A1 (en) * | 2015-05-21 | 2016-11-24 | Krones Ag | Container treatment plant |
-
2017
- 2017-09-06 FR FR1758218A patent/FR3070679B1/en active Active
-
2018
- 2018-08-10 EP EP18749823.3A patent/EP3679434A1/en active Pending
- 2018-08-10 WO PCT/EP2018/071755 patent/WO2019048181A1/en unknown
- 2018-08-10 US US16/645,367 patent/US11698629B2/en active Active
- 2018-08-10 CN CN201880057851.6A patent/CN111065978B/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3070679B1 (en) | 2021-06-18 |
US11698629B2 (en) | 2023-07-11 |
CN111065978B (en) | 2023-12-01 |
FR3070679A1 (en) | 2019-03-08 |
CN111065978A (en) | 2020-04-24 |
WO2019048181A1 (en) | 2019-03-14 |
US20200285223A1 (en) | 2020-09-10 |
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