EP3797886A1 - Machine de prétraitement et procédé de prétraitement pour récipients - Google Patents

Machine de prétraitement et procédé de prétraitement pour récipients Download PDF

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Publication number
EP3797886A1
EP3797886A1 EP20191780.4A EP20191780A EP3797886A1 EP 3797886 A1 EP3797886 A1 EP 3797886A1 EP 20191780 A EP20191780 A EP 20191780A EP 3797886 A1 EP3797886 A1 EP 3797886A1
Authority
EP
European Patent Office
Prior art keywords
pretreatment
cladding
opening
interior
air supply
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
Application number
EP20191780.4A
Other languages
German (de)
English (en)
Inventor
Yifang Cong
Kai-uwe DREGER
Bernhard WESS
August Peutl
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.)
Krones AG
Original Assignee
Krones AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krones AG filed Critical Krones AG
Publication of EP3797886A1 publication Critical patent/EP3797886A1/fr
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing

Definitions

  • the present invention relates to a pretreatment machine for pretreating containers, such as bottles, according to claim 1 and a pretreatment method for containers, such as bottles, according to claim 11.
  • the containers are then fed to a printing machine in order to be provided with the print image.
  • the pretreatment processes in particular flame pyrolysis and plasma coating, are highly dependent on environmental conditions.
  • the gases and heat generated during the pretreatment can be reliably removed from the pretreatment module.
  • the problem to be solved is to specify a pretreatment machine and a pretreatment method for pretreating containers with which the requirements for the controlled environment for performing the pretreatment are met and at the same time protection of the operator and the components harmful influences is guaranteed.
  • the pretreatment machine for pretreating containers, such as bottles, comprises a cladding, at least one pretreatment module arranged in an interior of the cladding for pretreating a container and a transport device for containers running at least through the cladding, the cladding separating the interior space enclosed by it from the outside space outside the Cladding separates, wherein the cladding comprises a supply option for containers and a discharge option for containers, and wherein the pretreatment machine comprises a ventilation system which is designed in cooperation with the cladding to generate a controlled atmosphere in the interior, the ventilation system providing an air supply into the interior and a suction from the interior, wherein the air supply opening of the air supply is arranged in a side surface of the cladding, which is a side surface in which a suction opening of the suction is arranged in the Essentially opposite.
  • the arrangement of the air supply opening "essentially" in a side face opposite the suction opening of the suction system is to be understood as meaning that the air supply opening is either arranged in the opposite side face and / or that the air supply opening is in a side face other than the opposite side face is arranged only a small distance from this opposite side surface.
  • the suction opening is arranged, for example, in a ceiling surface of the cladding, the opposite side surface is the floor surface.
  • the air supply opening can then either be arranged in the floor surface or in a region close to the floor surface of the remaining side surfaces not opposite the ceiling surface.
  • the air supply opening according to the invention can also be arranged in a region of the side surface which belongs to the third of a side surface adjacent to the bottom surface.
  • the air supply opening in the side surface can be arranged at a maximum distance of about 1 m (measured from the floor surface). It can also be arranged at a maximum distance of up to 1.5 m in the side surface. The same applies to the suction opening. This can also be arranged not only in the ceiling surface, but also in an "upper area" (for example upper third or upper half) of the side surfaces.
  • the air supply opening can then be arranged either in the bottom surface or, as just described, in one of the side surfaces.
  • the separation is not to be understood in the sense that the interior is a system that is physically separated from the exterior. This is also not possible at all due to the fact that air is sucked into or out of the interior through the ventilation system.
  • the cladding defines an interior space which, apart from the air supply opening, the suction opening and the supply and discharge options, has no further openings in the cladding that are permanently open and / or whose surface area would be individually larger than the area of the The supply opening and / or the discharge opening and / or the surface area thereof would be larger overall than the surface area of the air supply opening or the suction opening.
  • the ventilation system in cooperation with the cladding in the interior can generate a controlled atmosphere means that the ventilation system is dimensioned in such a way that it can maintain a specified temperature inside the cladding despite the openings in the cladding, for example through the possibility of supply and discharge / or can maintain a predetermined pressure (in particular an overpressure or a negative pressure) in the interior of the cladding or can keep another desired parameter at a predetermined value.
  • a predetermined pressure in particular an overpressure or a negative pressure
  • the flow rate and / or heat output of the ventilation system must be at least greater than the amount of air and / or amount of heat that additionally enters the interior when there is negative pressure or escapes from the exterior when there is overpressure due to the discharge option and / or the supply option.
  • the air supply opening is arranged in a floor area, the suction opening in a roof area and the supply possibility and the discharge possibility in side areas of the cladding different from the roof area and the floor area.
  • An obstruction to the air flow due to the supply option and the discharge option is minimized because the air flow from the air supply opening to the suction opening runs perpendicular or essentially perpendicular to the connecting line between the supply option and the discharge option.
  • the supply option and the discharge option are designed as an opening in the cladding, the area of the opening corresponding to at most half the area of the air supply opening and / or the suction opening.
  • An exit or entry of air or heat through the supply and discharge options can thus be kept as small as possible and at the same time compensated for due to the large conveying capacity through the air supply opening and the suction opening.
  • the air supply can comprise a filter which can clean the air before it enters the interior through the air supply opening.
  • the ambient air can be used to generate the controlled atmosphere in the interior. In this way, it is possible to dispense with the comparatively costly provision of sterile air.
  • the air supply opening and / or the suction opening can comprise at least one guide plate for diverting an air flow, the guide plate extending at least partially into the interior.
  • an adjustment unit is provided which can change an orientation of the guide plate.
  • the direction of the air flow can also be adapted to changing process parameters.
  • the area of the air supply opening is equal to or greater than the area of the suction opening.
  • the influence due to incoming or outgoing currents can thus be kept as low as possible by means of the discharge option and the supply option.
  • the pretreatment machine comprises a flow monitoring device that monitors the suction flow and, if the suction power falls below the minimum, can output a warning to an operator and / or automatically stop the operation of the pretreatment machine.
  • the cladding can comprise on its outside at least one connecting element for connecting the cladding to a further cladding of a further pretreatment machine according to one of the previous embodiments.
  • a modular structure of larger container treatment systems can be created as required with the help of basically always the same individual modules consisting of, for example, a pretreatment machine according to one of the previous embodiments, which can reduce the complexity of larger systems.
  • the pretreatment method according to the invention for containers, such as bottles, with a pretreatment machine, the pretreatment machine having a cladding, at least one pretreatment module arranged in an interior of the cladding, which treats a container, and a transport device running at least through the cladding, which transports the containers at least through the interior includes that the cladding separates the interior space enclosed by it from the outside space outside the cladding, wherein the cladding comprises a supply possibility through which containers are supplied to the interior, wherein the lining comprises a discharge possibility through which containers are led out of the interior , and wherein the pretreatment machine comprises a ventilation system which, in cooperation with the cladding, generates a controlled atmosphere in the interior, the ventilation system supplying air to the interior and extracting it from it Comprising interior, wherein the air supply opening of the air supply is arranged in a side surface of the cladding, which is opposite to a side surface in which a suction opening of the suction is arranged.
  • an active air supply and an active suction can be brought about (for example by controllable fans provided in the suction and the air supply, which can generate an air flow).
  • a control of the internal pressure within the cladding can be completely controlled and regulated as required.
  • the suction can be active and the air supply passive.
  • This can be implemented, for example, by an exhaust system equipped with a fan for generating an exhaust flow, while the air supply does not include a device for generating an air flow.
  • This can be used to generate a negative pressure within the cladding. In this way it can be avoided that undesired impurities and environmental influences, such as dust, gases, heat, can flow through openings in the casing that are not completely sealed or through the discharge and supply openings.
  • an active air supply and a passive suction can be provided. Equipping with devices for generating an air flow then takes place in the air supply, but not in the suction. This makes it possible to create an overpressure inside the cladding. This ensures that no dust, gases or other contaminants are sucked in through small gaps in the cladding, as these are always displaced from the cladding due to the prevailing overpressure.
  • the supply option and the discharge option are designed as an opening in the cladding, the area of the opening corresponding to at most half the area of the air supply opening and / or the suction opening, and the size and shape of the opening essentially being the size and shape corresponds to the cross-section of the container.
  • the size and shape "essentially" corresponds to the size and shape of the cross section of the container is to be understood to mean that the container can be moved through at least the feed option and the discharge option without colliding with them or suffering damage.
  • the opening for the supply option and / or the discharge option is therefore preferably selected to be at least slightly larger than the cross section of the container, but selected to be the same or at least geometrically similar to the container with regard to its shape. A sufficiently large but at the same time as small as possible opening is thus provided, which simplifies the dimensioning of the ventilation system.
  • molded parts can then be provided in the feed option and the discharge option, which are adapted to the respective container shape. These can be interchangeable in order to be able to change the format of the container.
  • the supply option and the discharge option have, for example, a rectangular opening through which containers of any size and shape provided for the machine can be passed. A format change of the container then does not require any modification of the feed option and the removal option.
  • the air supply opening is arranged in a floor area
  • the suction opening in a roof area and the supply option and the discharge option are arranged in side surfaces of the cladding different from the roof area and the floor area, and an air flow in the interior is essentially from the air supply opening to the suction opening runs and a pressure difference of no more than 10hPa compared to the ambient air is applied to the supply option and the discharge option.
  • a flow rate of the air supply and / or the suction can be controlled as a function of an operating parameter of the pretreatment.
  • a corresponding operating parameter includes, for example, the temperature of the pretreatment module or the concentration of gases such as fuel gas, CO 2 , oxygen or the like within the cladding or in the interior.
  • gases such as fuel gas, CO 2 , oxygen or the like within the cladding or in the interior.
  • the pressure and the temperature within the cladding can also be understood as such a parameter.
  • a flow monitoring which monitors the suction flow and outputs a warning to an operator if the suction power falls below a minimum, and / or automatically stops the operation of the pretreatment machine, is provided as part of the pretreatment machine.
  • the flow monitoring can issue the warning and / or stop the operation of the pretreatment machine, since in this case the air supply opening or a filter built into it is likely to be clogged, which is not just one would have a negative impact on the pre-treatment of the container, but also on the regulating elements in the exhaust air duct.
  • a gas sensor for monitoring a fuel gas concentration in the interior of the cladding issues a warning to an operator and / or automatically stops the operation of the pretreatment machine.
  • One or more gas sensors can also be arranged in the interior of the cladding and / or in the outer area outside the cladding. These gas sensors can be provided in order to measure the presence of certain concentrations of gas mixtures.
  • the gas sensors can be designed to detect, in particular, undesired, flammable and / or explosive concentrations of gas mixtures before the explosion limits are reached.
  • the combustible / explosive gases can include, for example, propane, methane, hydrogen. It can be provided that if a concentration of such gases is detected, especially in the interior of the cladding above the set limit values, a warning is issued to the operator, for example via acoustic or optical signal transmitters connected to the sensors and / or a control unit, and / or automatically stops the operation of the pretreatment machine. It can also be provided that when such gases are detected, the suction power is increased until the concentration of the gases is reduced to 0 or approximately 0 in the interior of the cladding.
  • a control unit can, for example, control the suction power as a function of the concentration of one or more gases measured by one or more gas sensors in the interior.
  • Figure 1 shows a pretreatment machine 100 according to an embodiment of the invention.
  • a pretreatment machine is understood to mean any machine for pretreating containers which comprises at least one pretreatment module for pretreating the containers.
  • pretreatment of the container is understood to mean, in particular, treatment of the outer surface of the container.
  • This treatment can include an active change in the chemical and / or physical surface properties. For example, the surface energy can be reduced or increased.
  • one or more layers can be applied to the actual surface of the container, these layers themselves in turn realizing certain chemical and / or physical properties.
  • the pretreatment is preferably arranged upstream of an actual container treatment, in particular a direct printing machine.
  • the one in the Figure 1 The pretreatment machine shown can therefore be understood in one embodiment as being integrated into a container treatment system, whereby a container treatment machine, such as a blow molding machine, can be arranged upstream (from the point of view of the transport direction of the container) and a container treatment machine, whose treatment of the container from the pretreatment, is arranged downstream such as a direct printing machine.
  • a container treatment machine such as a blow molding machine
  • a container treatment machine whose treatment of the container from the pretreatment, is arranged downstream such as a direct printing machine.
  • the downstream container treatment machine (not shown) is preferably a printing machine, such as a direct printing machine.
  • the pretreatment machine 100 comprises one or more pretreatment modules 151 and 152.
  • the pretreatment modules can include, for example, flame pyrolysis devices or plasma nozzles that apply a substance mixture to the surface of the container 170 guided past the pretreatment modules in a transport device 140.
  • the surface can be changed physically or chemically by applying such a layer. This can include the fact that the flame / plasma contains additional substances (such as silicates), or that the surface of the container is changed by the energy supplied by the flame / plasma.
  • the transport device 140 shown is designed as a linear conveyor which transports the containers past the pretreatment modules 151 and 152 in the direction of the arrow shown, the pretreatment modules 151 and 152 being designed to be stationary.
  • the transport device 140 is designed as a carousel, along the periphery of which a plurality of container receptacles is arranged, each of which can accommodate one or more containers and guide them past the pretreatment modules.
  • the pretreatment modules can also be designed to be partially or completely movable along with the transport device 140. If the transport device 140 is designed as a carousel, for example, the pretreatment modules can be provided as part of the container receptacles so that they circulate together with them (and the containers then possibly arranged in the container receptacles).
  • the transport device can be operated cyclically. This means that the transport device moves the containers transported therein by a certain distance at intervals and pauses the movement in between. Groups of containers (for example 10, 20, 30 or more or any other number) can be moved, with the containers being fed to the pretreatment modules, then being pretreated by the pretreatment modules at a standstill and then being moved on. Other embodiments are also conceivable here.
  • the containers can also be transported in the transport device 140 continuously, that is to say without a break.
  • the continuous or cyclical transport of the containers is independent of whether the transport device 140 is designed as a linearly operating transport device, such as a conveyor belt, as shown in FIG Figure 1 is shown, or whether the transport device is designed as a carousel as described above.
  • the pretreatment machine 100 further comprises a casing 130 in which both the transport device 140 and the pretreatment modules 151 and 152 are arranged.
  • the cladding defines an interior space which is essentially completely enclosed by it and which is separated from the surrounding outer space by the cladding. The separation of the interior from the exterior by the cladding is not in the sense of a physically separated one System. Rather, an exchange of media and / or energy is still possible between the interior and the exterior, although this is restricted by the cladding, since the cladding essentially comprises a boundary in the form of its side walls that is impermeable to matter at least.
  • containers can be supplied to the transport device within the cladding and removed from it and, for example, transported via the further transport devices 161 and 162, which are also shown.
  • the transport device 161 can feed containers 170 via the feed facility 131 to the transport device 140, while the transport device 162 can remove containers (after their pretreatment within the pretreatment machine) from the discharge facility 132 of the cladding.
  • a ventilation system is provided according to the invention.
  • This includes at least one air supply 110 with an air supply opening 111, which can bring air into the interior of the cladding (with active air supply, for example by means of a fan or another device for generating an air flow) or through which air can be introduced into the interior (with passive air supply) Air supply without a fan or other device to generate an air flow).
  • the ventilation system comprises at least one suction 120, which in turn comprises a suction opening 121 open to the interior of the cladding, through which air can be sucked out of the interior (with active suction, for example by means of a fan or another device for generating an air flow) or through the Air can at least escape from the interior (with passive extraction without a fan or other device for generating an air flow).
  • air is supplied to the interior of the cladding or discharged from it
  • gas mixtures for example nitrogen or the like
  • the gas or gas mixture or the air is conditioned before it is introduced into the interior of the cladding.
  • the air can be tempered to a certain temperature (for example by heating or cooling the ambient air drawn in).
  • the air supply opening 111 (also supply opening in the following) is preferably arranged in a bottom surface of the cladding 130 of the pretreatment machine 100.
  • This floor surface can be positioned at a distance from the floor of a factory hall in which the pretreatment machine is arranged, so that air is sucked in from the outside by a suitable ventilation system (including, for example, one or more fans) directly from the external environment and into the interior of the pretreatment machine through the air supply opening 111 can be introduced.
  • the extraction can also comprise a corresponding ventilation system with one or more fans or other possibilities for generating an air flow in order to suck air from the interior of the pretreatment machine.
  • the suction opening is preferably arranged in the side surface opposite the supply opening, for example the roof surface, of the cladding.
  • the ventilation system and the cladding are designed so that they can cooperate with one another to create a controlled atmosphere within the interior of the cladding.
  • This controlled atmosphere can for example consist in the fact that a specific air pressure, a specific temperature or a specific air flow or other parameters characterizing the atmosphere can be set within the cladding.
  • This is essentially achieved in that the performance of the ventilation system (for example flow rate of air supplied into the interior and air discharged from the interior) is dependent on the volume of the interior enclosed by the cladding as well as depending on the size of the supply opening and suction opening and possibly also depending on is determined by the (relative) size of the discharge option and the feed option for containers, so that the ventilation system is designed to realize the desired conditions within the cladding.
  • the performance of the ventilation system depends on further parameters, for example also on the pretreatment itself.
  • the performance of the ventilation system can be adjusted depending on the heat, dust, undesired gases (one or more of them) generated during the pretreatment. For example, if the volume of the interior space is 30 m 3 and the surface area of the supply and discharge options is less than 0.2 m 2 , then, for example, a flow rate of 2 m 3 min -1 for the supply of air through the air supply and of something Less than 2m 3 min -1 , about 1.95 m 3 min -1 for the suction of air through the suction is sufficient to generate a slight overpressure inside the cladding, since hardly any air escapes due to the discharge option and the supply option.
  • the discharge option and the feed option 132 or 131 are provided as openings in the otherwise closed cladding, the openings having a shape that essentially corresponds to the outer shape of the container, which are fed to the pretreatment machine or to be discharged from the pretreatment machine through the feed option and the discharge option. If, for example, it is a question of bottles with a height of 20 cm, the possibility of feeding and removing are preferably somewhat larger than 20 cm, for example 21 cm.
  • Their shape can be adapted to the shape of the containers (for example bottles) so that they include, for example, an elongated, substantially identically shaped area and are slightly narrower in the upper area, in which the bottle neck of the container is located. This ensures that the discharge option and the feed option are sufficiently large to ensure that the containers can be guided through, but at the same time their area is as small as possible so that as little air as possible can escape from them or enter the interior of the cladding through them .
  • the "power loss" of the atmosphere within the cladding that occurs due to the supply and discharge options is thus kept as small as possible, which simplifies the dimensioning of the ventilation system.
  • the air supply can comprise one or more air filters, not shown in detail here, which are arranged in the flow direction of the air in front of the supply opening 111 in the interior of the cladding. These filters can, for example, trap dust from the ambient air. This facilitates the implementation of certain properties of the controlled atmosphere generated in the interior, since, for example, the particle density of impurities remains as low as possible.
  • control unit can, for example, be connected to a flow measuring unit or flow monitoring unit (not shown here) in the suction device 120 and / or also in the air supply in order to be able to measure and evaluate the flow rate.
  • a flow measuring unit or flow monitoring unit not shown here
  • the flow rate will decrease, so that less air penetrates into the interior of the cladding through the air supply opening or less escapes from the interior through the suction.
  • control unit can issue a warning, for example on the central control of the pretreatment machine or the container treatment system or in any other suitable form that can be perceived by an operator and instructs him to clean or change the air filters.
  • control unit can also be designed to cease operation of at least the pretreatment machine if the flow falls below a certain limit value, in particular a minimum flow. For example, it can be provided that when the measured flow reaches a value of 10% (based on the normal flow of the suction and / or the air supply, which is present without contamination of the filter), the control unit stops the operation of the pretreatment machine.
  • the air supply opening and the suction opening 111 or 121 have as large an area as possible.
  • the suction opening and the air supply opening can have the same opening area, so that a constant flow can be realized.
  • the opening area of the supply and discharge options is as small as possible (for example, approximately the same size as the cross-sectional area of the containers to be transported through them) in order to keep the volume flow of air through the discharge option and the supply option as low as possible.
  • the feed option or the discharge option can have an area which is at most 10%, but preferably less than 20%, more than the cross-sectional area of the container.
  • panels are provided in the discharge option and the feed option, which have openings which correspond to the shape of the container so that the containers can be transported through the panels.
  • only a rectangular opening can be provided in the discharge facility and / or the feed facility, which opening is sufficiently large so that every format of a container provided for the machine fits through it. This means that retooling work when changing from a first container shape to a second container shape can be dispensed with, but the exchange of media (for example air) between the surroundings and the interior of the cladding cannot always be minimized.
  • a number of other components can also be integrated into the air supply, such as heating elements and / or cooling elements, separation systems, in particular droplet separators or other wet separation systems, and also control systems (sensors) that measure the composition of the air mixture that is sucked in. Monitoring of the air mixture supplied to the interior can thus be ensured.
  • FIGS. 2a and 2b show a side view of the in Figure 1 illustrated embodiment of the pretreatment machine.
  • the air supply opening 211 is located in the bottom area of the cladding 130, whereas the suction opening 221 in both embodiments is located in a ceiling surface of the cladding.
  • an air flow 280 is realized.
  • the supply openings 211 and the suction opening 221 are also offset from one another with respect to an arbitrarily selected axis, that is to say with respect to this axis that are in the Figures 2a and 2b is shown at a distance from one another.
  • the suction opening with respect to the transport device 140 for the containers 170 is arranged on the opposite side of the pretreatment modules 151.
  • the suction opening 221 is positioned essentially centrally in the roof surface of the cladding 130.
  • the air flow generated between the supply opening and the suction opening 221 therefore essentially does not run in the area in which the surface of the container is pretreated by the pretreatment module, so that it is not negatively influenced by the air flow 280.
  • the arrangement of the supply opening 211 and the suction opening 221 can be selected particularly advantageously if the control of the atmosphere within the cladding is essentially limited to the fact that a certain temperature or a certain pressure is to be established.
  • the feed opening 211 is arranged on the same side with respect to the transport device as the pretreatment module 151, but is at a greater distance from the transport device 140 than the pretreatment module 151.
  • the suction opening 221 is on the same side with respect to a boundary of the pretreatment module 151 arranged, like the supply opening 211. This ensures that here too the air flow 280 between the supply opening and the suction opening does not at least run between the pretreatment module and the container.
  • a connecting line between any point of the supply opening 211 and the suction opening 221 does not run at least through the pretreatment module and particularly preferably not through the pretreatment area 290 in which the pretreatment module takes over the pretreatment of the surface of the container, i.e. in which, for example, the flame of the flame pyrolysis device is applied or the plasma nozzle generates the plasma.
  • a negative influence on the pretreatment by the air flow generated between the supply opening and the suction opening can thus be avoided.
  • the feed opening 311 is arranged within the casing similarly to that in FIG Figure 2a .
  • the embodiment according to Figure 3 however, it is not to be construed as limiting in this regard. Indeed, the embodiment according to FIG Figure 3 can also be used for the suction opening or for another arrangement of the supply opening, such as the one in FIG Figure 2b .
  • the supply opening comprises at least one guide plate 312, which can cause the air flow 380 shown here to be deflected at least in a partial area around the guide plate.
  • the guide plate can be arranged at an angle relative to the surface normal of the feed opening 311.
  • the guide plate can enclose an angle of 20 ° with this surface normal.
  • the baffle itself preferably has no openings, so that air cannot pass through the baffle at any point.
  • the exiting air is thus deflected as shown.
  • Sensitive components for example, which should not be influenced by the primary air flow between the supply opening and the suction opening, can then be arranged in this. If the feed opening extends, for example, essentially over the entire bottom surface of the cladding, one or more guide plates can be used to guide the Figure 3 Shade shown area 390 for the pretreatment of undesired influences due to the air flow.
  • an adjustment unit can be provided which can adjust the alignment of the guide plate 312.
  • the angle of incidence of the guide plate can be set in relation to the surface normal of the feed opening 311 and this can be used advantageously to direct the air flow onto certain components or away from certain components of the pretreatment machine.
  • the guide plates can be provided, for example, in a movable bearing inside or directly above the air supply opening 311. You can either use them as straight sheets
  • the sheet (for example in the form of a rectangle or the like) or have another shape.
  • they can be provided as a curved sheet or as a corrugated sheet.
  • the curvature can also differ along the length or the width of the sheet metal. In any case, it is provided that the thickness of the sheet in the plane shown here is significantly smaller than the other dimensions of the sheet in the plane of the drawing.
  • FIG. 4 Figure 3 shows a further embodiment of the invention.
  • a container treatment system 400 is provided here, which comprises a multiplicity, but at least two, pre-treatment machines according to one of the aforementioned embodiments. In fact, any of the previously described embodiments can be used with the Figure 4 described embodiments are combined.
  • a transport device 403 is provided which extends essentially completely through the multiplicity of pretreatment machines 401, 402 and possibly further machines.
  • the pretreatment machines 401 and 402 are according to the in Figure 4 described embodiment connected to one another via at least one, preferably also a plurality of connecting elements 406.
  • An air gap can then exist between the individual pretreatment machines so that the conditions for suction and supply can be regulated separately in each pretreatment machine. For example, an exact setting of suction and / or supply depending on the number of pretreatment modules (plasma nozzles, flame pyrolysis devices, etc.) can be made for each pretreatment machine independently of the others.
  • no air gap is provided between the individual pretreatment machines and the pretreatment machines can preferably be connected without a gap via the respective connecting element 406.
  • the respective interiors of the pretreatment machines can then be separated from one another by a separating element.
  • This separating element can comprise a permanently open opening for the containers so that they can change from the interior of the first pretreatment machine to the interior of the second pretreatment machine.
  • the opening can, but does not have to be, shaped to correspond to the openings in the feed possibilities and discharge possibilities. In particular, it can be adapted to the container contour.
  • This embodiment offers the advantage that the interiors of the pretreatment machines are connected so that the containers are not directly exposed to the ambient air during transport, but at the same time there is a certain spatial separation through the separating element, so that each interior space for itself and in particular the ventilation provided for each pretreatment machine can be regulated separately.
  • the respective supply and suction of the air are also provided for each pretreatment machine.
  • connection of the pretreatment machines with the aid of the connecting elements can, however, also be carried out in such a way that the removal option of the first pre-treatment machine in the transport direction of the containers coincides with the feed option of the pre-treatment machine following in the transport direction, so that there is no air gap between these two and thus the interior of the two pre-treatment modules can be viewed as a common interior space.
  • the pretreatment machines 401 and 402 can comprise corresponding pretreatment modules. It can be provided that the pretreatment machines 401 and 402 are standardized per se, that is, both are designed in the same way. This makes it possible to meet given requirements for the pre-treatment of the containers, for example, by stringing together pre-treatment machines that are otherwise produced in the same way over and over again. If, for example, it is necessary that six pretreatment modules take over the pretreatment, but a provided pretreatment machine only comprises two pretreatment modules, then three corresponding pretreatment machines can be connected to one another via the connecting elements 406 according to the embodiment described above and the containers along the transport device 403 one after the other through them arranged pretreatment machines are passed through. It is therefore no longer necessary in the manufacture of the pretreatment machines to meet every customer requirement down to the last detail with a single pretreatment machine. Instead, standardized pre-treatment machines can be used, which can significantly reduce production costs.
  • standardized slots for pretreatment modules are provided in each pretreatment machine.
  • different pre-treatment modules for example flame pyrolysis devices or plasma analyzes
  • Supply lines for media connections can also be provided in the pretreatment machines in a standardized manner, which can be used depending on the pretreatment module ultimately selected.
  • the media supply from outside the pretreatment machines, for example via a corresponding switching and media cabinet 404, can be routed in a standardized manner via a line bridge 405.
  • the line bridge 405 is designed so that it can lead media to all machines of the same type.
  • a bridge 405 can be provided for the media supply of pretreatment machines which carry out a pretreatment with the aid of plasma nozzles.
  • Another bridge 405 can be designed for other container treatment machines or for other pre-treatment machines.
  • a central operating unit 407 in the form of a computer or other possibility of interaction for the operator, comprising, for example, a touch screen, a keyboard, a mouse or the like, can be provided on one or more of the pretreatment machines.
  • the control of the machine 401, on which the operating unit 407 is provided can be realized, but also the control of the other machines 402 and possibly the following machines can take place. It can be provided that all control programs for all conceivable container handling machines are stored in the operating unit 407 or assigned to it. Depending on the combination of pre-treatment machines or other container treatment machines, these can then be activated.
  • connection from adjacent or interconnected pretreatment machines also simultaneously realizes a connection for data exchange (preferably bidirectional), so that data from the machines to the operating unit and from the operating unit to can be transferred to the pre-treatment machines.
  • each pretreatment machine comprises a housing or cladding in which the supply options and discharge options, but also the air supply and suction, or their corresponding openings to the environment are provided.
  • the pretreatment of containers can lead to harmful environmental conditions, for example due to the heat or radiation that develops for components arranged within the cladding. This includes, for example, exposure to infrared radiation or UV radiation or electromagnetic radiation in general, as well as general heat generation, contamination, deposition of substances that are used in pretreatment, etc.
  • the embodiment now described also provides for an additional protective device 531 to be arranged within the cladding 530.
  • FIG 5a A plan view of the interior of the casing 530 of the pretreatment machine 500 is shown.
  • This interior can be viewed as being divided into two areas by the transport path 501 of the containers 503, which runs completely through the interior and possibly also through the exterior. In Figure 5a this is the area to the left of the transport path 501 and the area to the right of the transport path.
  • the treatment modules 502 are on the left and an access opening for entering or reaching into the interior of the cladding 530 is located in the right area.
  • This access opening can usually be closed by doors 531, so that the cladding can be closed as completely as possible if there is access from outside is not necessary or dangerous for the operator.
  • the access opening can be used, for example, for maintenance work on the transport path and / or the treatment modules 502.
  • One or more ventilation openings for the air supply according to the invention can also be arranged in the right-hand area. These are shown here schematically as element 510. It goes without saying that any embodiment previously described in this regard can be used to implement element 510.
  • an additional protective device 540 is also provided, which is arranged in the right-hand area between the access opening and the transport path but at a distance from the access opening.
  • This protective device 540 also preferably comprises at least one access opening 541, for example in the form of a door.
  • the protective device 540 and the cladding preferably delimit a partial area of the interior of the cladding.
  • the protective device 540 can, for example, be transparent or opaque wall, consisting or comprising, for example, plexiglass, aluminum or the like, with a corresponding access opening, which can be made of the same material or can comprise this.
  • One or more components which are at least partially protected from the environmental influences that form in the interior during the pretreatment, can then be arranged within the partial area of the interior that is delimited in this way.
  • the components 561 and 562 can be arranged in the partial area which is located between the casing 530 and the protective device 540.
  • the ones arranged on the left side of the transport path and in Figure 5b Treatment modules (not shown), in particular pretreatment modules, are then in any case outside the sub-area, so that the treatment modules prevent the components from directly influencing the components. At the same time, this ensures that the components are still accessible for any maintenance work through the access opening 531 in the casing.
  • the transport path and components in the interior of the cladding that are outside the sub-area are moreover accessible via the access opening 541 in the protective device 540.
  • one or more ventilation openings 570 can be provided in the protective device, through which air can flow into the sub-area, for example from the air supply, and can be extracted by the suction device already described.
  • the ventilation openings are arranged in an upper and / or a lower boundary surface 545 or 546 of the protective device.
  • the radiation emitted, for example, by treatment modules usually strikes the boundary surface 547 of the protective device, which preferably has no further, permanently open areas, so that it cannot penetrate the partial area and the components are reliably protected.

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EP20191780.4A 2019-09-25 2020-08-19 Machine de prétraitement et procédé de prétraitement pour récipients Pending EP3797886A1 (fr)

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WO1997049955A1 (fr) * 1996-06-21 1997-12-31 U.N.I.R. Ultra Propre-Nutrition Industrie-Recherche Procede et dispositif de protection d'un plan de travail
DE102007013637A1 (de) * 2007-03-19 2008-09-25 Ewald Dörken Ag Vorrichtung zum Beschichten von metallischen Werkstücken
EP2743087A1 (fr) * 2012-12-17 2014-06-18 Krones AG Imprimante avec habillage
US20140323602A1 (en) * 2013-04-29 2014-10-30 Krones Ag Direct printing method with a base layer
US20150367389A1 (en) * 2014-06-20 2015-12-24 Kinglab Laboratory Equipment Co., Ltd. Intelligent air curtain fume hood
EP3427849A1 (fr) * 2012-03-12 2019-01-16 Stokely-Van Camp, Inc. Système et procédé de rinçage de contenants
DE102017215453A1 (de) * 2017-09-04 2019-03-07 Krones Ag Bestrahlungstunnel für Behälter und Verfahren zur Bestrahlung von Behältern

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ATE527118T1 (de) * 2007-08-03 2011-10-15 Khs Gmbh Vorrichtung und verfahren zum bedrucken von behältern
DE102015222996A1 (de) * 2015-11-20 2017-05-24 Krones Ag Aushärtestation und Verfahren zum Aushärten von Druckfarbe eines Direktdrucks auf Behältern
DE102015222999A1 (de) * 2015-11-20 2017-05-24 Krones Ag Direktdruckmaschine und Verfahren zur Bedruckung von Behältern mit einem Direktdruck

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425335A (en) * 1968-01-24 1969-02-04 Purex Corp Ltd Laboratory fume hood
WO1997049955A1 (fr) * 1996-06-21 1997-12-31 U.N.I.R. Ultra Propre-Nutrition Industrie-Recherche Procede et dispositif de protection d'un plan de travail
DE102007013637A1 (de) * 2007-03-19 2008-09-25 Ewald Dörken Ag Vorrichtung zum Beschichten von metallischen Werkstücken
EP3427849A1 (fr) * 2012-03-12 2019-01-16 Stokely-Van Camp, Inc. Système et procédé de rinçage de contenants
EP2743087A1 (fr) * 2012-12-17 2014-06-18 Krones AG Imprimante avec habillage
US20140323602A1 (en) * 2013-04-29 2014-10-30 Krones Ag Direct printing method with a base layer
US20150367389A1 (en) * 2014-06-20 2015-12-24 Kinglab Laboratory Equipment Co., Ltd. Intelligent air curtain fume hood
DE102017215453A1 (de) * 2017-09-04 2019-03-07 Krones Ag Bestrahlungstunnel für Behälter und Verfahren zur Bestrahlung von Behältern

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