EP3044006A2 - Procédé et dispositif pour soumettre un corps tridimensionnel à un prétraitement de surface - Google Patents

Procédé et dispositif pour soumettre un corps tridimensionnel à un prétraitement de surface

Info

Publication number
EP3044006A2
EP3044006A2 EP14781463.6A EP14781463A EP3044006A2 EP 3044006 A2 EP3044006 A2 EP 3044006A2 EP 14781463 A EP14781463 A EP 14781463A EP 3044006 A2 EP3044006 A2 EP 3044006A2
Authority
EP
European Patent Office
Prior art keywords
transport
dimensional body
surface treatment
movement
dimensional
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
Application number
EP14781463.6A
Other languages
German (de)
English (en)
Other versions
EP3044006B1 (fr
Inventor
Volker Till
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.)
Till GmbH
Original Assignee
Till GmbH
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 Till GmbH filed Critical Till GmbH
Publication of EP3044006A2 publication Critical patent/EP3044006A2/fr
Application granted granted Critical
Publication of EP3044006B1 publication Critical patent/EP3044006B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/007—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing with heat treatment before printing
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated

Definitions

  • the invention relates to a method and a device for surface pretreatment of a three-dimensional body for preparing a three-dimensional surface of the body for printing, in particular with ink.
  • the surface to be printed for cleaning, in particular for degreasing, and / or to adapt to the surface tension of the printing material or the ink (ink) is moved relative to a surface treatment device to treat the entire surface to be printed can.
  • Known methods for pretreating such surfaces to be printed are a plasma treatment, a flame treatment, a fluorination, an ozone treatment, a UV light treatment and / or a corona treatment.
  • a corona treatment is usually carried out in which the substrate is subjected to a high-voltage electrical discharge which occurs between a grounded support electrode for the substrate and a closely fitting insulated electrode through the substrate ,
  • Such a treatment is generally not possible with three-dimensional bodies, so that in the case of containers such as bottles, either a flame treatment or a treatment with, in particular, atmospheric plasma is carried out in preparation for direct printing of the surface.
  • plasma jet nozzles which produce a flat jet with a width of 10 to 15 mm, but which does not have a homogeneous intensity distribution between its center and the edge. Rather, the plasma intensity decreases towards the edge, so that it is difficult to achieve a homogeneous surface pretreatment of the entire surface to be printed.
  • plasma emitters are known in which the concentrated plasma jet is passed with a more homogeneous distribution through a rapidly rotating outlet nozzle, whereby an annular plasma jet is created, which covers a larger area than a circle segment and reaches a uniform intensity distribution of the plasma jet in the circular segment with a uniform rotation speed of the outlet nozzle ,
  • an annular plasma jet is created, which covers a larger area than a circle segment and reaches a uniform intensity distribution of the plasma jet in the circular segment with a uniform rotation speed of the outlet nozzle
  • a further axis must be actuated in order to subject the entire surface to be printed to a surface pretreatment of uniform intensity.
  • Simply translationally passing systems as they are possible with two-dimensional surfaces, but do not achieve this.
  • the object of the present invention is therefore to provide a method for surface pretreatment of three-dimensional bodies of the type mentioned at the outset. strike, in which a surface preparation is easier to integrate in a printing system.
  • the three-dimensional body in a transport path of a transport device in which the body is moved in particular toward a printing press or printing station of the printing system, is subjected to the surface preparation, i. in other words, that the surface treatment device of the body is or is arranged on a transport path of a transport device, in particular on the transport path to the printing machine or printing station of the printing system.
  • a printing system which, for example, can be integrated in a production or cleaning line for the three-dimensional body, for example a plastic bottle, usually has a transport device with which the three-dimensional body moves along a transport path to the printing press or printing station is transported.
  • the basic idea of the invention is now to arrange the surface preparation in such a transport path, so that the bottle can be subjected to the surface preparation on the way to the printing press or printing station.
  • it is easier to arrange the surface treatment device since usually more space is available than in the printing press or printing station itself.
  • the control of the surface treatment device can be made more flexible, since the surface treatment time and space of the process of Printing the surface is separated.
  • the surface pretreatment according to the invention clocked or continuous wherein depending on the structure of the device according to the invention, of course, only one or at the same time can also be treated more three-dimensional body.
  • the three-dimensional body can then be moved into stationary motion, stationary relative to the transport path, in order to move the body past the surface treatment device.
  • this can be displaced, for example, into a rotation about an endogenous axis, preferably the central axis. A particularly preferred embodiment of this will be described later.
  • the three-dimensional body in the transport path of the transport device to the surface treatment device in a vorgebaren, possibly adjustable and / or einregelbaren, Transport speed in the direction of transport moves past and simultaneously moved around an endogenous axis such, in particular rotated, is that the surface to be printed in or against the transport direction due to the proper movement of the body around the body's own axis on the surface treatment device at an airspeed preferably in constant Moved distance from the surface treatment device over.
  • the proposed movement of the three-dimensional body past the transport device can basically be configured as a relative movement, ie the three-dimensional body is moved past the surface treatment device fixed in the transport direction in the space, the surface treatment device is moved past the stationary in the transport direction in space body (which, however According to the invention, for at least this one embodiment of a continuous surface pretreatment would require as much as possible avoiding timing) or the three-dimensional body and the surface treatment device are moved in the transport direction at different speeds. The latter also leads to a relative movement of three-dimensional body and surface treatment device in the transport direction.
  • the preferred embodiment for this variant is that the three-dimensional body is moved past the surface treatment device fixed in the transport direction in space.
  • the three-dimensional body can, irrespective of whether it is a pulsed or continuous surface pretreatment as described above, according to a particularly preferred variant of the proposed invention, be, in particular, a container to be printed, such as a bottle of plastic and / or glass ,
  • the surface to be printed is preferably curved three-dimensionally, in particular rounded, so that the surface is unrolled against a counter surface.
  • the three-dimensional body in the region of the surface to be printed can therefore be cylindrical and / or rotationally symmetrical.
  • the three-dimensional body is not limited to this particularly preferred and easy-to-handle form, but may possibly also be a polygonal body with an approximate circular shape or a body of elliptical shape.
  • the surface pretreatment according to the invention is in particular a plasma treatment, in particular a treatment with atmospheric plasma, with plasma emitters, which are preferably designed as rotating outlet nozzles.
  • Another preferred option for surface treatment is a flame treatment, in particular with gas-fired burners.
  • the plasma lasers and / or the gas-fired burners are preferably provided in an arrangement (array) in which they cover at least a portion of the surface of the three-dimensional body to be printed.
  • this arrangement of the plasma emitter and / or gas-fired burner an extension direction of the surface to be printed, in particular transversely or obliquely to the transport direction, covered.
  • the plasma emitters and / or gas fired burners form in their arrangement the surface treatment device.
  • the three-dimensional body is rotated about the body's own axis, whereby the body's own axis is preferably a rotational symmetry axis of a body rotationally symmetrical in the area of the surface to be printed ,
  • the movement of the three-dimensional body can be particularly easily achieved by the inclusion of the body in a separate rotating device, which is driven externally and - in the case of a continuous surface pretreatment - preferably moved with the transport device.
  • a movement device for moving the three-dimensional body around a body-own axis so by a driving device for moving the three-dimensional body past the surface treatment device may be formed separately, for example.
  • the entrainment device and the movement device are designed as a combined device which simultaneously effects the movement of the body combined for the continuous surface pretreatment according to the invention.
  • a belt drive which will be described in more detail later, can be used, which frictionally engages the three-dimensional body with two separate and at different speeds, preferably in opposite directions with respect to its engagement surface on the three-dimensional body.
  • the abutment surface can be formed, for example, by rubberized rollers in a simple embodiment, which are arranged distributed over the circumference of the three-dimensional body at least two different locations and exert a bias of the body against the railing.
  • the railing can also be formed by rollers, for example counter-rotating rollers.
  • the railing is also moved in or opposite to the direction of movement of the contact surface.
  • both the direction of rotation of the three-dimensional body and the rotational speed can be easily set, in particular during the simultaneous translational transport of the three-dimensional body in the transport path.
  • the movement of the contact surface and / or the railing by a motor-driven, preferably adjustable in speed driven belt, wherein the driven belt, in particular as a contact surface and / or lands on the three-dimensional body frictionally applied, so that of the Body is rotated during the movement of the belt around the body's own axis and at different speeds of the belt is also moved translationally.
  • a belt drive can be easily realized especially in conventional transport systems and has the advantage that any existing roles for fixing the three-dimensional body and / or the non-positive pressing of the belt to the body need not be driven itself.
  • These rollers can be used to bias the belt according to the invention against the three-dimensional body in the direction of the body, for example, spring preloaded.
  • rollers which are preferably spaced such that a role in two three-dimensional bodies, especially bottles, frictionally engages and the two three-dimensional body when applied to the railing, the example.
  • a Belt or counter-rotating rollers may be formed, as far as they are pressed apart, that they do not rub against each other during the self-rotation.
  • these rollers can also drive a belt, which is tensioned onto the driven rollers and abuts against the three-dimensional body over a larger area, thus enabling an even better transmission of force to the three-dimensional bodies.
  • two rollers each engage a three-dimensional body to secure the three-dimensional body against the railing.
  • the driven rollers are arranged such that they meet at an angle to the three-dimensional body, that no self-locking of the three-dimensional body is generated by the two rollers, that attack the at least two rollers in the same direction of rotation of the three-dimensional body.
  • This drive is especially for three-dimensional bodies with a cylindrical or at least rounded basic shape, such as. Round in cross-section bottles, suitable.
  • the invention provides that the transport speed and the intrinsic speed of the three-dimensional body are coordinated in the case of a continuous surface pretreatment such that the surface treatment device treats each area of the surface approximately equally long and / or equally intensive.
  • Such a setting or tuning of the transport speed and the intrinsic speed of the three-dimensional body is, for example, possible due to geometric considerations in which the natural motion and the transport movements of the body are superimposed and so a time-time analysis is created, how long each surface area of the is exposed to the printing surface of the surface treatment device.
  • the temporal and / or local intensity profile of the surface device can also be taken into account, for example in the case of rotating plasma emitters, which in each case treat a circular upper segment on the surfaces in a rotational position.
  • Simply such geometrical considerations may be made by setting up a computer model in the treatment of the surface and deriving the appropriate speeds taking into account the operating parameters of the surface treatment device, the computer model being implemented in a suitable control device.
  • control device may also have a control which adjusts the transport speed and the own speed depending on the result of the computer model.
  • the transport speed and the intrinsic speed of the body as well as possibly the temporal and / or local intensity profile of the surface treatment device can be entered into the computer model.
  • a clocked surface treatment can be inventively provided that the surface pretreatment of the three-dimensional body during a standstill in the direction of the transport path, ie clocked or in a downtime of the three-dimensional body based on the transport in the transport device, ie in a transport break occurs.
  • the three-dimensional body is moved about an endogenous axis, in particular rotated, and thus moved past the surface treatment device.
  • the three-dimensional body and the surface treatment device according to the invention in the direction of the body's axis, in particular the axis of rotation, relative to each other, wherein the speed of movement about the body's own axis, in particular the rotation, and the sliding movement along the axis are coordinated with one another in such a way that the surface of the three-dimensional body is helically treated by the surface treatment device.
  • This movement can also be generated by geometric considerations, for example by means of a computer model and a suitable control of the drives, similar to those described.
  • the surface to be treated or the later to be printed on the three-dimensional body nationwide, ie pretreated over the entire surface, with an equal dose of intensity and treatment time, because the surface treatment means passes over each part of the surface to be pretreated in the same way and for the same period of time.
  • This is achieved in the pulsed, also known as discontinuous, pretreatment process by the helical treatment of the surface.
  • the non-uniform treatment of the surface with a spatially different dose leads to different changes in the surface, which manifests itself in divergent properties.
  • a printed image of uniform quality can not be achieved, for example, because the ink or ink adheres differently well in a subsequent printing.
  • the inventive helical treatment here a much more uniform surface preparation is achieved because all surface areas are treated in the same way.
  • a changer in the transport path a changer is installed with at least two transport sections, wherein the changer is operated such that in a transport section a further- Transport of a three-dimensional body or recorded in the one transport section three-dimensional body takes place while in the other transport section, the surface pretreatment of another three-dimensional body or other recorded in the other transport section three-dimensional body.
  • the transport sections are preferably logical, but preferably also arranged spatially parallel to each other.
  • the transport stream of three-dimensional bodies is divided according to this proposal than several, ie at least two or possibly even more different transport sections.
  • the invention further relates to a device for surface pretreatment of a three-dimensional body for preparing a three-dimensional surface of the body for printing, in particular with ink, with a surface treatment device for treating the entire surface to be printed, preferably itself three-dimensionally extending.
  • the surface to be printed is designed to be movable relative to the surface treatment device.
  • the device has a transport device with a transport path for the three-dimensional body and the surface treatment device is arranged in the region of the transport path.
  • the transport device for the three-dimensional body ie for the movement of the body along the transport path of the transport device, a driving device for moving the three-dimensional body past the surface treatment device and a movement device for simultaneous Movement of the three-dimensional body around the body's own axis, ie that the entrainment device and the movement means are adapted to the movement of the three-dimensional body past the surface treatment device and the movement of the three-dimensional body around the body's own axis occur simultaneously.
  • the method proposed according to the invention can be carried out continuously by this device.
  • the driving device and the movement device can also be realized by a combined device, for example. By suitable drives, the combined movement of the Body reach without separate drives must be provided for the translational movement and the proper movement of the body.
  • the transport device for a pulsed (discontinuous) surface preparation, a movement means for moving the three-dimensional body about an endogenous axis and an adjusting device for relative displacement of three-dimensional body and surface treatment device in the direction of the body's own axis, with the previously described helical surface pretreatment easy is feasible.
  • devices and methods are conceivable and possible in which a continuous and a cycled surface pretreatment, for example in different transport sections or transport sections, are combined with one another.
  • the device can have a moving or fixed railing and a preferably arranged opposite the railing moving contact surface, between which the three-dimensional body is non-positively absorbable.
  • the contact surface and / or the railing may, for example, be designed as a belt drive, wherein the belt forming the contact surface preferably bears against the three-dimensional body under pretension. This can be done by a tensioning device pressing the belt in the direction of the three-dimensional body, for example in the form of spring-loaded rollers or a suitable belt guide. Alternatively, a separate roller drive or the like is conceivable for each bottle.
  • a contact surface and / or railing are also, for example, driven rollers or mating rollers in question.
  • the transport device can be designed as a transport star with a drive device for moving the three-dimensional body in the star pocket of the transport star.
  • a roller drive or a separate turntable for each star pocket as a technically feasible option in question, but without the invention would be limited to these rotary actuators for the proper motion of the three-dimensional body.
  • the surface treatment device may be a gas-fired burner arrangement with a plurality of burners, ie a plurality of individual combustion nozzles, for flame treatment.
  • a qualitatively superior surface pretreatment can preferably be achieved according to the invention if the surface treatment device is an array of plasma emitters, in particular for treatment with atmospheric plasma, wherein in particular rotating plasma emitters are used which generate a circular segment-shaped treatment surface on the surface to be treated by rotating outlet nozzles This circle segment is treated very homogeneously by the rotating plasma emitter with approximately the same plasma intensity.
  • the individual plasma emitters or combustion nozzles can be provided in preferably a plurality of, for example three, double rows each having a half distance of the individual plasma emitters or fuel nozzles offset between each row of the double rows.
  • the arrangement is thus such that a double row, a direction of the surface to be printed on the body is completely covered transversely to the transport direction.
  • the device according to the invention can also be equipped with a control device with a computing unit, wherein the arithmetic unit is set up by programs for data processing for carrying out the above-described methods or method variants or parts thereof.
  • Fig. 1 shows schematically an apparatus for surface preparation of a three-dimensional body according to a first embodiment in the plan view from above.
  • FIG. 2 shows the device according to FIG. 1 in a side view in the transport direction;
  • FIG. 3 shows a plan view of the surface treatment device according to the invention according to FIG. 1 and FIG. 2;
  • Fig. 4 shows schematically a second embodiment of the invention
  • Fig. 5 shows schematically a third embodiment of the invention
  • FIG. 6 shows schematically a sectional illustration through the embodiment according to FIG. 5;
  • FIG. 7 shows schematically as a fourth embodiment a variant of the device according to the invention according to FIG. 5 in a plan view from above with an altered rotational drive for the three-dimensional bodies; and
  • Fig. 8 shows schematically a fifth embodiment of the invention
  • bottles are shown as three-dimensional body 1, which are transported along the transport path of a transport device 2 with the transport speed v T translationally on a surface treatment device 3.
  • a surface of the bottle 1 to be printed on later is pretreated so that the printing material (ink) adheres to the desired quality surface.
  • the invention is described below with reference to a surface pretreatment of bottles as three-dimensional bodies 1 in various embodiments, but without the invention being restricted to this particularly preferred application.
  • the transport device 2 has two motor-driven belts 4, 5, of which the belt 4 serves as a railing and the belt 5 as a contact surface which rest on opposite sides of the three-dimensional bodies or bottles 1, wherein the contact surface 5, the bottles. 1 against the railing 4 presses.
  • the serving as a bearing surface 5 belt moves at a speed vi in the direction of the transport speed v T.
  • the belt serving as a railing 4, against which the bottle 1 is pressed by the abutment surface 5, moves with respect to the point of contact on the bottle 1 at the speed of the contact surface vi in the opposite direction at the speed v 2 . Due to the different speed of the belts 4, 5, these act on the one hand as a driving device which moves the three-dimensional body 1 (bottle) past the surface treatment device 3.
  • the three-dimensional body 1, or the bottle is simultaneously moved or rotated about an endogenous axis which coincides with the rotational symmetry axis of the bottle.
  • the circumferential speed in the area of the surface to be printed is given by the speed v 2 of the railing 4 relative to the speed vi of the contact surface 5.
  • railing 4 and contact surface 5 also act as moving parts due to the different speeds.
  • the circumference of the bottle also rotates while the bottle 1 is moved past the surface treatment device 3.
  • the device 6 is also shown in side view in FIG. 2, the viewing direction pointing in the direction of the transport speed v T.
  • the bottle 1 is frictionally clamped between the railing 4 and the installation 5, with the railing 4 projecting upwards out of the plane of representation at the speed v 2 and the contact surface 5 moving into the display surface of FIG. 2 at the speed vi emotional.
  • the surface treatment device 3 is arranged, which has a plurality of rotating plasma emitters 7 for generating an atmospheric plasma, which acts on the surface of the three-dimensional body 1 in the region of the surface 8 to be printed.
  • a transport device independently transports the bottle 1 with the transport speed v T and the proper movement through the contact surface 5 at a fixed railing 4 or through the contact surface 5 and the railing 6 at a counter-moving railing 4 takes place.
  • the rotational speed of the bottle 1 by changing the velocities vi , v 2 of contact surface 5 and / or railing 4 are changed.
  • This also has effects on the treatment time of the surface 8 to be printed for the surface treatment, which can be suitably adjusted according to the invention.
  • FIG. 3 shows a plan view of the surface treatment device 3 with the rotating plasma emitters 7.
  • These plasma emitters 7 are arranged in an array which is composed of plasma emitters 7 each offset by half their spacing in three double rows, so that a total of six rows of plasma emitters 7 are arranged one behind the other.
  • the plasma emitters 7 each generate a circular segment 9 of a plasma-treated surface during the rotation of outlet nozzles of the plasma emitter 7.
  • Such plasma emitters 7 are known and commercially available.
  • the treated as a circular segment 9 surface is shown in phantom in Fig. 3.
  • the transport speed v T , the speed vi of the contact surface 5 and the speed v 2 of the railing 4 can be set so that a label of 70 mm width over 7 strips ä 1 0 mm width each passes over six plasma emitters 7 to one as possible to achieve uniform plasma treatment. Since a label can be up to 300 mm long, every crossing of the plasma emitter 7 must cover at least 300/6 mm. The bottle 1 must therefore turn by 50 mm per passage of a burner. The rotating plasma emitter 7 should have rotated five times during this time.
  • FIG. 4 shows an alternative device 10 for surface pretreatment of three-dimensional bodies 1 (bottles), in which a transport star 1 1 is used as the transport device, which rotates at the transport speed v T and thereby generates a circular transport path.
  • the direction of the transport speed v T is opposed by a belt 12 moves, which is driven by a motor, and the bottles 1 presses in serving as railing rollers 13 (mating rollers).
  • the motor-driven belt therefore forms the abutment surface 12 of the device 10 and moves opposite to the transport speed v T at the speed vi.
  • the bottle 1 is next to the translational movement by rotation of the transport star 1 1 along the transport path of the transport star 1 1 in a self-rotation about its axis of symmetry.
  • the bottle 1 with the surface 8 to be printed is guided past a surface treatment device 3 constructed from an arrangement of several plasma emitters 7.
  • the arrangement and operation of the surface treatment device 3 correspond to the above-described embodiment. This need not be explained in more detail.
  • the surface treatment device 3 could also have gas-fired burners, so that flame treatment of the surface is carried out instead of the plasma treatment.
  • the arrangement of the burners in an array could be done in the same way.
  • Such a flame treatment is just like a plasma treatment to prepare a surface for printing, especially with ink.
  • FIG. 5 shows a further embodiment of a device 14 according to the invention for surface pretreatment of bottles 1 as three-dimensional bodies, in order to enable the surface of the bottle 1 for later printing in a printing station or printing installation, which is not shown in FIG. 5 - chen.
  • a surface treatment device 15 is provided in the device 14, which has a plurality of individual plasma emitters or plasma nozzles 7 in an array which is oriented or alignable in its direction of action on the bottles 1.
  • the device 14 according to the invention also has a transport device with a transport path 16 for the bottles 1, wherein the surface treatment device 15 is arranged in the region of the transport path 16.
  • the transport path 16 has a changer 17 with two transport sections 17a and 17b, which open via a soft-type branch 18 in the einzugige transport path 16.
  • bottles 1 can be optionally distributed to one of the two transport sections 17 a, 17 b.
  • the surface treatment device 15 is arranged in the region of the transport part sections 17a, 17b of the entire transport path 16, so that in the state shown in FIG. 5 it acts on the bottles 1 accommodated in the transport section 17a.
  • the transport device has a driving device 19 shown in FIG. 6 for moving the bottles 1 along the transport path 16 or the transport part sections 17a, 17b, which is designed as a type of conveyor belt.
  • a movement device 20 for moving the bottles 1 about an endogenous axis ie a movement device for rotating the bottle 1 about its axis of symmetry, through which the bottle 1 is rotated in front of the plasma emitters 7 of the surface treatment device 15 be so that the surface to be printed 8 of the bottle 1 can be treated by the plasma emitter 7.
  • the movement device 20 for rotating the bottles 1 in front of the plasma accelerators 7 has mating rollers 21 that bear against the plasma emitters 7 and act as a railing.
  • the bottles 1 are clamped such that the contact surface 22 (belt) frictionally rests against the bottle 1 and this by the running of the belt 22nd put in a rotation.
  • the entrainment device 19 in the transport section 17a is not in operation, so that the self-rotating bottle 1 rests in relation to the transport movement along the transport path 16, 17a.
  • This operation is therefore also referred to as a discontinuous or clocked surface pretreatment, because during the surface pretreatment the bottle 1 is not transported further.
  • the surface treatment device 15 is rotated by 180 °, so that the
  • Plasma emitters 7 are then aligned with the bottles 1 in the transport section 17b.
  • a movement device 20 for rotation with counter-rotating rollers 21 and motor-driven belt 22 are provided according to the transport section 17a on the transport section 17b.
  • the structure of the surface treatment device 15 with the movement device 20 is shown in more detail in the sectional view of FIG. 6, each showing a bottle 1 in the transport sections 17a and 17b.
  • the movement means 20 is provided for rotation of the bottle, the counter-rollers 21 and motor-driven belt 22, wherein in each case a belt 22 relative to the counter-rotating roller 21 at the bottom and the bottle neck is arranged to force the bottle against the To press counter-rotating roller 21 and to keep the surface to be printed 8 for treatment by the plasma emitter 7.
  • the belts 22 and the counter-rotating rollers 21 are firmly attached to the bottle 1, so that the bottle 1 is set in rotation about its own axis (central axis) 23.
  • the plasma emitter 7 is in position 1 and treats the surface 8 to be printed or treated at its upper edge.
  • the bottle 1 and the surface treatment device 15 with the plasma emitters 7 through an adjusting device 24, indicated by the double arrow, in the direction of the body's own axis 23 are moved to the position 2, while the bottle 1 rotates and the plasma emitter 7, the surface 8 is treated.
  • a suitable rotational speed of the bottle around its end center axis 23 and an adapted adjustment speed of the adjusting device 24 on the surface 8 helical treatment paths of the plasma emitters 7 are generated, whereby each point on the entire surface to be treated 8 uniformly with an equal dose of intensity and Treatment duration is treated.
  • the entrainment device 19 is not in operation, ie the bottle rests one of the treatment position in the transport direction and performs only one rotation about its endogenous axis 23.
  • the surface treatment device 15 is pivoted along the dashed arrow 25 by 180 °, so that the plasma emitter 7 is in the position 3 in FIG .
  • the mating rollers 21 and the belts 22 are returned from the bottles 1 in the transport section 17b, and the bottles 1 already treated in a preceding surface treatment step in the transport section 17b are moved out of the transport section 17b and at the same time new, still to be treated bottles 1 introduced into the transport section 17b.
  • FIG. 7 a variant of the device 14 according to the invention is shown in plan view from above with an alternative movement device 26, which is arranged in each case in the transport part sections 17a and 17b.
  • the driven rollers 27 are as a contact surface and the counter-rotating rollers 28, which may also be self-propelled, to the bottles 1, wherein the distance between two driven rollers 27 and two mating rollers 28 is dimensioned such that the bottles 1 during the by the movement means 26 in rotation offset bottles 2 have a certain safety distance in the order of, for example, about 1 mm, so that the bottles do not rub against each other during the rotation during the surface pretreatment.
  • the distance between the driven rollers 27 and - possibly even driven in the same direction Counter-rollers 28 - is further dimensioned such that the two adjacent driven rollers 27 cause no inhibition of bottle rotation.
  • This margin is available in the transport sections 17a, 17b.
  • the entrainment device 19 stands still, so that the bottles rest in the transport direction and rotate only in a stationary manner.
  • FIG. 8 shows a further device 29 according to the invention, which is constructed in a similar way to the device 10 from FIG. 4, but is also intended for a pulsed, discontinuous surface pretreatment, since correspondingly two transport stars 1 1 in a changer 17 with two transport sections 17 a , 17b are provided which connect to the transport path 16 of a transport device.
  • a surface treatment device not shown, for example.
  • the bottles 1 is held in the transport star 1 1 serving as a railing mating rollers 13 and the rotary drive by a motor-driven belt as a contact surface 12th takes place, which presses the bottles in the rollers 13 of the transport star 1 1.
  • the bottles can thus be set in rotation, and this can also take place in the case of a stationary transport star 1 1.
  • the surface treatment device is In the illustration, for example, in FIG. 5, along the axis of rotation of the bottles 1 for the production of helical-line treatment paths, in the area of the surface 8 of the bottle 1 to be printed or treated, slidably provided.
  • This embodiment according to FIG. 8 has the advantage that the bottles do not have to be displaced as far as during the recording in the transport star 1 1 by the application of the bottles to the rollers 13 as in the embodiment of FIG. 7.
  • two surface treatment devices are also necessary.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour soumettre un corps (1) tridimensionnel à un prétraitement de surface pour préparer une surface (8) tridimensionnelle dudit corps (1) en vue d'une impression. Afin d'être nettoyée et/ou adaptée à la tension superficielle de la matière d'impression, la surface (8) à imprimer est déplacée par rapport à un dispositif de traitement de surface (3, 15) pour permettre un traitement de la totalité de la surface (8) à imprimer. Selon l'invention, le corps (1) tridimensionnel est soumis au traitement de surface dans une voie de transport (2, 11, 16) d'un dispositif de transport.
EP14781463.6A 2013-09-13 2014-09-12 Procédé et dispositif pour soumettre un corps tridimensionnel à un prétraitement de surface Active EP3044006B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013110125.9A DE102013110125A1 (de) 2013-09-13 2013-09-13 Verfahren und Vorrichtung zur Oberflächenvorbehandlung eines dreidimensionalen Körpers
PCT/EP2014/069527 WO2015036555A2 (fr) 2013-09-13 2014-09-12 Procédé et dispositif pour soumettre un corps tridimensionnel à un prétraitement de surface

Publications (2)

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EP3044006A2 true EP3044006A2 (fr) 2016-07-20
EP3044006B1 EP3044006B1 (fr) 2018-01-03

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EP14781463.6A Active EP3044006B1 (fr) 2013-09-13 2014-09-12 Procédé et dispositif pour soumettre un corps tridimensionnel à un prétraitement de surface

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US (1) US20160221328A1 (fr)
EP (1) EP3044006B1 (fr)
DE (1) DE102013110125A1 (fr)
WO (1) WO2015036555A2 (fr)

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WO2015036555A2 (fr) 2015-03-19
WO2015036555A3 (fr) 2015-05-07
EP3044006B1 (fr) 2018-01-03
US20160221328A1 (en) 2016-08-04
DE102013110125A1 (de) 2015-03-19

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