Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
  • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F15/00—Screen printers
  • B41F15/08—Machines
  • B41F15/0804—Machines for printing sheets
  • B41F15/0809—Machines for printing sheets with cylindrical or belt-like screens
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F15/00—Screen printers
  • B41F15/08—Machines
  • B41F15/0831—Machines for printing webs
  • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D1/00—Processes for applying liquids or other fluent materials
  • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D2252/00—Sheets
  • B05D2252/02—Sheets of indefinite length
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
  • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
  • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
  • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2217/00—Printing machines of special types or for particular purposes
  • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
  • B41P2217/11—Machines with modular units, i.e. with units exchangeable as a whole

Definitions

• the invention relates to a cylinder for aligning magnetic or magnetizable particles contained in coating agent on a substrate and to a machine for producing optically variable image elements according to claims 1 and 13, respectively.
• EP 2 114 678 B1 discloses a printing machine with a screen printing unit and a device for aligning magnetic or magnetizable particles contained in the printing ink or varnish, the device comprising a cylinder with a plurality of elements on the circumference that cause a magnetic field are arranged in several axially adjustable support rings.
• the support rings have openings on their inner circumference, which interact with openings on a shaft carrying the support rings for the passage of suction air.
• openings on the shaft are via plugs, e.g. B. screwable elements, selectively lockable.
• the support rings can be positioned axially on a shaft and clamped thereon by a tensile force acting in the circumferential direction.
• the US 2011/0168088 A1 relates to a device for the orientation of magnetic flakes, in one embodiment magnets being arranged on the circumference of disks, which are arranged on an axis and can be exchanged for disks with a different distribution.
• CN 103192591 A describes a device for aligning magnetic or magnetizable particles contained in coating agents a cylinder disclosed, which comprises magnetic elements arranged in a matrix-like manner in the area of its outer circumference. Groups of magnetic elements arranged axially next to one another, arranged one behind the other in the circumferential direction, are each arranged on axially extending support elements and can be moved axially thereon. After axial positioning, the magnetic elements in the support elements can be clamped in the relevant support element by screws acting in the circumferential direction. The support elements can be positioned in the circumferential direction. The axially extending support elements are clamped at the ends by support rings on the front and in the circumferential direction.
• WO 2014/037221 A1 discloses a magnetic cylinder with several cylinder sections, which include several magnetic elements one behind the other on their circumference and areas with suction air openings surrounding both sides of the magnetic elements. Support elements with a cylindrical peripheral surface are provided between such cylinder sections.
• DE 11 2012 006 348 B4 discloses a magnetic cylinder with a plurality of spaced support rings, which are adjustable with respect to their axial position on a cylinder body. These support rings have annular grooves on the outer circumference, which can be equipped one behind the other in the circumferential direction with magnetic devices and can be adjusted in the circumferential direction after loosening the adjusting screws on the relevant support ring. Openings of a suction air line system open into the bottom of the annular grooves and into a shoulder in between, through which suction air can be sucked in from suction openings in a cover plate forming the cylinder jacket.
• the invention is based on the object of creating a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate and a machine for producing optically variable image elements.
• the object is achieved according to the invention by the features of claims 1 and 13, respectively.
• a cylinder for aligning magnetic or magnetizable particles contained in the coating agent on a substrate in the area of its outer circumference it comprises, in a matrix-like manner, a number of n x m (in words n times m; with n, m e N > 1) elements providing magnetic fields, briefly magnetic elements, which are arranged in rows running parallel to the axis and in columns running in the circumferential direction, as well as suction elements in the circumferential area with suction openings pointing outwards, in a particularly advantageous embodiment in several of the columns of magnetic elements several of the magnetic elements arranged one behind the other, each with at least one assigned suction element are combined in respective structural units as active units and as such can be positioned in the circumferential direction and/or detached from the cylinder overall and independently of all other such active units.
• the active units comprise at least one line interface on their underside facing into the interior of the cylinder and/or an inner cylinder body, which is enclosed by the cylinder and directly or indirectly supports the respective active unit on its circumference, on the outside of which a plurality of line interfaces for the passage of suction air.
• the active units comprise at least one line interface on their underside facing into the interior of the cylinder and an inner cylinder body, which is enclosed by the cylinder and directly or indirectly supports the respective active unit on its circumference, on its outside a plurality of line interfaces for the passage of suction air.
• At least two magnetic elements provided one behind the other in the same column are arranged on or in magnetic element carriers which are different from one another and can be positioned independently of one another in the circumferential direction on the cylinder, the at least two magnetic elements arranged one behind the other on the respective magnetic element carriers relative to the magnetic element carrier carrying the magnetic element in the circumferential direction are stored so that they can be adjusted within an adjustment range.
• At least two or all of the magnetic elements provided one behind the other in the same column are mounted as a group on or on a common support element and can be varied with this together and independently of the magnetic elements of an adjacent column with regard to their axial position in or on the cylinder , wherein in a particularly advantageous embodiment, the at least two or all magnetic elements of the same column are arranged on respective magnetic element carriers, which in turn can be positioned independently of one another in the circumferential direction on the common support element and / or can be detached from the support element, and wherein the at least two or all magnetic elements of the same column on the respective magnetic element carriers are mounted so that they can be adjusted relative to this in the axial direction within an adjustment range.
• a support element which has several active units on its circumference and is carried by the inner cylinder body has, on its side facing into the interior of the cylinder, a plurality of line interfaces on the inner cylinder body for the passage of suction air Line interfaces and on the outside a plurality of line interfaces that interact with line interfaces of active units for the passage of suction air.
• a particularly advantageous embodiment of a machine for producing optically variable image elements on a substrate comprises a substrate template, at least one printing unit, through which substrate is guided through the machine on a transport path at least on a first side in a matrix-like manner using a number m of columns and a number n of Lines is and / or can be printed, a product holder, through which processed substrate can be combined in containers, and an alignment device provided in the substrate path between the printing unit and the product holder for aligning magnetic or magnetizable particles with a cylinder, the cylinder preferably according to an embodiment or Combined execution of one of the above Cylinder is formed.
• a high degree of accuracy can also be achieved in a combination of designs for the clamping device that fixes the ring elements and/or a design as structural units and/or through the mobility of individual or all magnetic elements in the axial and/or circumferential direction and/or through a clamping device that clamps the magnetic elements or structural units the treatment of optically variable image elements and/or a high degree of flexibility in the range of applications or processes for the provision of optically variable image elements can be enabled or increased.
• several structural units each of which comprises at least one line interface on their underside for the passage of suction air, are provided on an inner cylinder body or on common support elements arranged on the inner cylinder body, the cylinder inner body and/or the respective support element being on an outwardly directed Page a variety of line interfaces with optionally lockable ones Bushings, in particular bores, for passing suction air through.
• Cylinder has z. B. a number of four to eight columns or groups, each with a number of z. B. 2 to 12, in particular 5 to 10, of elements providing magnetic fields arranged one behind the other in the circumferential direction, or magnetic elements for short.
• the axial direction here and below refers - unless explicitly stated otherwise - to a direction parallel to the axis of rotation of the cylinder.
• nxm, with n, me N > 1 comprises magnetic elements which are arranged in axially parallel rows and in columns running in the circumferential direction, with at least two, preferably all of the magnetic elements provided one behind the other in the same column on or in mutually different, in Circumferential direction on the cylinder independently positionable magnetic element carriers are arranged, and wherein the at least two or all of the magnetic elements arranged on the respective magnetic element carriers are mounted so that they can be adjusted in the circumferential direction within an adjustment range relative to the magnetic element carrier carrying the respective magnetic element.
• a particularly advantageous development of the cylinder in the area of its outer circumference, viewed in the axial direction has a number m of groups next to each other, each with a number of magnetic elements arranged one behind the other in the circumferential direction, with several or all magnetic elements of a group, in particular several or all groups, on or on a common ring-like support element arranged on an inner cylinder body and can be positioned on the support element in the circumferential direction, and wherein the magnetic elements, a holder that accommodates the magnetic elements or a magnetic element carrier that carries the magnetic elements, when viewed in the axial direction of the cylinder, each comprise at least one clamping element on both
• a machine for producing optically variable image elements on printing material sections, with a printing material template, in particular designed as a sheet feeder, with at least one printing unit, in particular a screen printing unit, through which substrate guided on a transport path through the machine at least on a first side in a matrix-like manner with the use of a number of columns and a number of lines is and / or can be printed, and with a product holder, through which processed substrate can be combined in containers, in particular designed as a stack delivery, preferably includes a device for aligning magnetic in the transport path of the printing material sections between the printing unit and the product holder or magnetizable particles with a cylinder in one of the above. or combined version.
• FIG. 1 shows an exemplary embodiment of a machine for producing optically variable picture elements on a substrate
• Fig. 2 is a schematic representation of a substrate printed in printing elements with an optically variable coating agent, with a) a state with not yet oriented magnetic or magnetizable particles and b) a State after aligning an imaging part, here as an example in the form of a number “1”;
• FIG. 3 shows a schematic representation of a printing and downstream alignment process with an imaging printing cylinder and a cylinder having magnetic elements, shown as an example with a substrate sheet that widens in a trapezoidal shape towards the trailing end;
• FIG. 4 shows an exemplary embodiment of a magnetic cylinder in a perspective view
• FIG. 5 shows an individual representation of a support element equipped one behind the other in the circumferential direction with, for example, several magnetic elements
• FIG. 6 shows a sectional view through a support element equipped with a magnetic element, but in a narrower version compared to FIG. 5;
• FIG. 7 shows a detail from a longitudinal section through a cylinder according to FIG. 4;
• FIG. 8 shows an exemplary embodiment of a valve that selectively releases and closes a suction air opening
• FIG. 9 shows an exemplary embodiment of an active unit comprising a magnetic element and a suction element in a less complex embodiment
• Fig. 10 is a top view of an active unit according to Fig. 9, but without magnet and housing;
• Fig. 11 shows a section through an exemplary embodiment of an active unit comprising a magnetic element and a suction element with a recognizable adjusting mechanism for a axial positioning of the magnetic element;
• FIG. 12 shows a section through an exemplary embodiment of an active unit comprising a magnetic element and a suction element with a recognizable adjusting mechanism for positioning the magnetic element in the circumferential direction;
• FIG. 13 shows a perspective view of an assembly aid for attaching or removing and/or positioning an active unit
• Fig. 14 is a perspective view of an active unit arranged on a ring element with attached assembly aid from Fig. 13;
• 15 is a perspective view of a cylinder inner body equipped with six ring elements
• FIG. 16 shows a cross-sectional view of a cylinder with a cylinder inner body, a ring segment-like support element arranged thereon and, for example, ten active units arranged on the latter;
• Fig. 18 shows a detail of the fastening device for the support element.
• a machine 01 e.g. B. printing machine 01, in particular securities printing machine 01, for producing optically variable image elements 03 on a substrate 02, e.g. B. a web or sheet-shaped printing material 02, comprises an application device 04, e.g. B. a printing unit 04, through which optically variable coating agent 06, e.g. B. visually variable printing ink 06 or varnish 06, on at least one application location, e.g. B. printing point 11, on at least a first side of the substrate 02, z. B.
• an application device 04 e.g. B. a printing unit 04
• optically variable coating agent 06 e.g. B. visually variable printing ink 06 or varnish 06
• the printing material 02 can be applied over the entire surface or in partial areas in the form of printed image elements 08, as well as a device 07 for aligning particles P contained in the optically variable coating agent 06 applied to the substrate 02 and responsible for the optical variability (see, for example, . Fig. 1).
• This device 07 is also referred to below as the alignment device 07 or, since it effects imaging for the optically variable pattern or motif through defined alignment of the particles P, also as the imaging alignment device 07.
• An application of coating agent 06 containing particles P on the printing material 02 and an image element 03 obtained by subsequent imaging alignment of previously randomly oriented particles P is, for example.
• B shown schematically in Fig. 2 using a representation of the number “1”. In this case, a) represents a state in which the coating agent 06 is applied and, for example, still randomly oriented and b) a state in which an imaging alignment has taken place.
• the printed image elements 08 made of variable coating agent 06 which are applied to the substrate 02 by the application device 04 before the treatment by the alignment device 07, can correspond in size and position to the optically variable image elements 03 to be produced or possibly be larger than these, possibly even larger the area extends to several uses 09.
• an optically variable image element 03 is not produced by aligning on the entire surface coated with optically variable coating agent 06.
• the particles P responsible for the optical variability are here in the coating agent 06, e.g. B. the printing ink 06 or the varnish 06, magnetic or magnetizable, non-spherical particles P, e.g. B. pigment particles P, also referred to below as magnetic flakes.
• the machine 01 is preferably used to produce panels 09, e.g. B. securities 09, in particular banknotes 09, executed. This should in particular include the production of intermediate securities products, e.g. B. the production of printing material 02, in particular in the form of web or sheet-shaped printing material sections 02, in particular printing material sheets 02, with printed images of several securities 09.
• the substrate 02 can be through - e.g. B.
• cellulose or preferably cotton fiber-based or at least containing paper be formed by plastic polymer or by a hybrid product thereof. It can be present uncoated or already coated before coating in the above-mentioned application device 04, it can be unprinted or already printed once or several times in one or more upstream processes or otherwise mechanically processed.
• a printing material section 02 formed by a longitudinal section of a web-shaped substrate 02 or by a sheet of a sheet-shaped substrate 02 several blanks 09, e.g. B.
• banknotes 09 to be produced or their printed images arranged next to one another in rows running transversely to the transport direction T and one behind the other in columns running in the transport direction T or to be arranged in the course of processing the substrate 02 (indicated, for example, in Fig. 2 and in Fig .3).
• the machine 01 designed as a printing press 01 can in principle comprise one or more printing units 04 of any printing process.
• it comprises a printing unit 04, in particular a printing unit 04 operating according to the flexographic printing process or preferably according to the screen printing process, through which the optically variable coating agent 06 is or can be applied to a first side of the printing material 02.
• the printing processes mentioned, in particular the screen printing process, z. B. a greater layer thickness can be applied compared to other printing processes.
• first side of the substrate 02 or the printing material 02 is chosen arbitrarily and is intended to designate that side of the printing material 02 on which the optically variable material is to be treated downstream by the alignment device 07 Coating agent 06 is or has been or can be applied.
• the printing press 01 comprises a substrate template 13, preferably designed as a sheet feeder 13, from which the z. B. substrate 02 designed as a sheet-shaped printing material 02 - possibly via further printing or processing units - to the at least one printing unit 04 which applies the optically variable coating agent 06, e.g. B. flexo or preferably screen printing unit 04, is or can be supplied, which is between a printing unit cylinder 14, in particular a forme cylinder 14, z. B. a screen printing cylinder 14, and a common impression cylinder 17 a printing point 11 for printing a z. B. forms the first side of the printing material 02 (see, for example, Fig. 1).
• the optically variable coating agent 06 e.g. B. flexo or preferably screen printing unit 04
• the printing unit 04 preferably comprises, as an imaging cylinder, a forme cylinder 14 with a plurality of, in particular similar and/or the same, imaging printing elements 18, hereinafter also referred to as printing subjects 18, or, in particular similar and/or the same, groups of imaging printing elements 18 or .
• Print subjects 18 on the circumference which are in several, e.g. B. a number, e.g. B. from four to eight, especially five to seven, e.g. B. six columns spaced apart from one another transversely to the transport direction T and on a cylinder width corresponding to the print image width are arranged in several rows spaced apart from one another in the transport direction T.
• these printing subjects 18 are designed in the form of letterpress reliefs and, in the preferred case of a printing unit 04 that uses screen printing, in the form of through-print stencils.
• the printing material 02 of the alignment device 07 is conveyed via conveying means, e.g. B. one or more conveyor devices 12 designed as transport cylinders 12 can be fed.
• conveying means e.g. B. one or more conveyor devices 12 designed as transport cylinders 12 can be fed.
• the conveying means could be formed by one or more positively driven and / or undriven rollers.
• the printing material 02 is directly or via further funding, e.g. B. further transport cylinders of another, e.g. B. second conveyor device 21 and can be fed through this to a product holder 22 for receiving the printing material 02 processed and/or processed in the machine 01, in the case of sheet-shaped printing material 02 to a stack delivery 22.
• sheet-feeding means e.g. B. one or more transfer cylinders or drums or, as shown here, a z. B.
• a gripper circulation conveyor 21 conveyor device 21, in particular a chain gripper system 21, is provided, through which the printing material sheets 02 are taken over from the transport path section of the alignment device 07 via possibly one or more further transport cylinders and z. B. the stack delivery 22 are fed.
• At least one drying device with one or more dryers 23 directed towards the first side of the printing material 02 e.g. B. radiation dryers 23, and possibly a cooling device, not shown, e.g. B. cooling roller, may be provided.
• a cooling device e.g. B. cooling roller
• an inspection device not shown, e.g. B. an area or line camera can be provided.
• the printing unit 04 and the alignment device 07 structurally combined to form a device 16 for generating optically variable image elements.
• a device 16 for generating optically variable image elements.
• the device 16 is with on and off Output-side interfaces to corresponding interfaces of a conveyor system that continues upstream and downstream are inserted or inserted into the transport path of the machine 01 to be equipped.
• the alignment device 07 which is set out in detail below, is basically arbitrary in its designs, design variants or configurations, but is preferably provided or can be provided in a machine 01 or printing press 01 described above.
• the alignment device 07 for forming optically variable image elements 03, e.g. B. to form the optically variable effect in the previously - e.g. B. in the form of printed image elements 08 - optically variable coating agent 06 applied to the substrate 02, in particular to the printing material 02 comprises a defined transport path along which the substrate 02 to be conveyed by the alignment device 07 from an entrance area in which the substrate to be treated and substrate 02 having optically variable coating agent 06 on its first side is supplied or can be supplied, in a defined manner with an alignment device 26 which, as active elements 24, comprises elements 24 which provide magnetic fields, or magnetic elements 24 for short, is or can be brought into operative connection , preferably in such a way that the magnetic elements 24 of the alignment device 26 used for the imaging alignment and the printing material 02 printed with the printing ink 06 containing the particles P move synchronously with one another at least on a section of the transport path.
• the alignment device 26 is designed here as a magnetically effective cylinder 26, or magnetic cylinder 26 for short, which has the arrangement of magnetic elements
• the magnetic elements 24 can be formed directly by one-part or multi-part magnets 27 themselves or can preferably comprise one or more magnets 27, which are in or on a holder 28, e.g. B. on or in a base 28, - preferably detachable - is or are arranged.
• Magnets 27 here are generally understood to be magnetically effective devices which permanently or switchably produce a magnetic field that is permanently or switchable at least towards the side of the transport path - in particular for the alignment of particles P contained in the coating agent 06 on the substrate 02 guided over it as described here.
• the magnets 27 can be formed by one or more permanent magnets with or without engraving, by electromagnets or by combinations of one or more permanent and/or one or more electromagnets.
• magnet 27 is also understood below to mean several magnets 27 assigned to the same magnetic element 24 and forming a magnetic unit in their entirety, unless explicitly stated otherwise.
• versions with a plurality of one-part or multi-part magnets 27 encompassed by the magnetic element 24 and spaced apart from one another should also be included, as can be used, for example, in the case that a self-use 09 is subjected to a respective magnetic field at two different points should be.
• Such a magnet 27 or an arrangement of several magnets 27 of the same magnetic element 24 can be accommodated in a housing 38 of the magnetic element 24, which z. B. is detachably arranged in or on the holder 28 from the holder 28.
• two such magnetic cylinders 26 can also be provided in the transport path, which are arranged on the same or on different sides of a substrate 02 to be conveyed along the transport path.
• the alignment device 07 is a drying and/or curing device 19, e.g. B. assigned a radiation dryer 19, in particular UV radiation dryer 19, UV dryer 19 for short, which is preferably designed as a UV LED dryer 19 and / or is directed at a point in the transport path which the substrate 02 interacts with the magnetic cylinder 26.
• a drying and/or curing device 19 e.g. B. assigned a radiation dryer 19, in particular UV radiation dryer 19, UV dryer 19 for short, which is preferably designed as a UV LED dryer 19 and / or is directed at a point in the transport path which the substrate 02 interacts with the magnetic cylinder 26.
• the magnetic cylinder 26 is preferably arranged on its second side in the transport path of the substrate 02 to be conveyed, so that its first side, which is coated inline with optically variable coating agent 06, in particular upstream, faces outwards when passing through the magnetic cylinder 26, in particular during transport over the magnetic cylinder 26 .
• the magnetic cylinder 26 comprises a one-part or preferably multi-part cylinder body 29, on or on which the magnetic elements 24 are arranged, preferably detachably.
• the one-part or preferably multi-part cylinder body 29 can be rotatably stored or stored in a frame.
• the concept of the cylinder body 29 is intended to include both closed structures, i.e. H. with more or less closed cylinder surface, as well as open structures, i.e. H. scaffolding or frame-like structures such as B. the example shown in FIG. 4.
• the magnetic cylinder 26 has in the area of the side facing the substrate path, e.g. B. in the area of the outer circumference, in particular in the area of an outer cylindrical envelope surface of the cylinder body 29, the plurality of magnetic elements 24, which serve to orientate at least some of the magnetic or magnetizable particles P of the coating agent 06 applied to the passing printing material 02.
• n of magnetic elements 24 are provided on the circumference per column or group and are arranged in rows running parallel to the axis and/or in particular in such a way that when they are unrolled on the substrate 02 - a correct register between the substrate layer in Transport direction T and cylinder angular position provided - correspond to the pattern of the image elements 03 to be subjected to magnetic fields on the substrate 02.
• the row- or column-wise arrangement should also be understood to mean the corresponding grid-like or matrix-like arrangement in the event that some of them are slightly offset from one another in an axially parallel direction for correction or adjustment purposes.
• magnetic elements 24 of the columns or groups arranged one behind the other are then arranged one behind the other in the circumferential direction, for example at least in such a way that they at least overlap when rolling along a circular circumferential line and / or lie in use 09 of the same column of a substrate 02 to be treated even if they may be slightly offset from one another for correction or adjustment purposes.
• the same applies to any minor mutual deviations in the circumferential direction.
• the number m of columns or groups is, for example, four to eight, in particular five and seven, e.g. B. six and / or the number n of magnetic elements 24 of a column or group z. B. at two to twelve, advantageously at five to ten.
• the magnetic cylinder 26 or its cylinder body 29 is preferably designed such that the number m of columns or groups and/or the number n of rows or of magnetic elements 24 arranged one behind the other in a column or group - for example within the limits mentioned above - can be varied in order to adapt them to different requirements.
• the magnetic elements 24 - preferably in or on a corresponding holder 28 together with this - are releasably arranged or can be arranged on the cylinder 26 so that in the assembled state they can be arranged at a defined location on the circumference of the cylinder 26 and preferably completely removable from the cylinder 26 and/or can be positioned on the circumference of the cylinder 26 in the axial and/or circumferential direction.
• magnetic elements 24 can be arranged and stored on or in a cylinder body 29 in such a way that their axial position relative to the one-part or multi-part cylinder body 29 can be varied on or in this at least relative to other magnetic elements 24 of the same column or group of magnetic elements 24 are stored.
• This can be realized, for example, via axially extending guides on the circumference of the cylinder body 29, in or on which the relevant magnetic elements 24 are mounted directly or indirectly and can be moved into different axial positions.
• such guides could be provided individually for individual magnetic elements 24 of a row (see, for example, the embodiment according to FIG. 11, but if necessary also continuously for several or all magnetic elements 24 of a same row.
• the guides could run on the above-mentioned axial lines Support elements can be provided which carry all magnetic elements 24 in the same row.
• the magnetic elements 24 are in a respective row or preferably a respective column - possibly in addition to an independent axial and / or circumferential positioning of individual or all magnetic elements 24 of the row or column as a whole and independently of an adjacent row or column in the case of the row with regard to its position in Circumferential direction and, in the case presented here, the gap as a group can be varied with respect to its axial position on the magnetic cylinder 26 or on the cylinder body 29.
• the magnetic elements 24 of all rows are each z. B. summarized line by line on axially extending support elements as groups that can be positioned together in the circumferential direction.
• advantageously at least the two columns closest to the end face, and advantageously all columns are mounted as groups in an axially movable manner in or on the magnetic element carrier 29, in particular cylinder body 29
• the magnetic elements 24 can - directly or indirectly - in or on several, e.g. B. a number m of z. B. four to eight, especially from five to seven, e.g. B. six, axially spaced apart and preferably to one of the above.
• Part or preferably all of the preferably ring-like support elements 31 which can be positioned in the axial direction on a cylinder inner body 32, in particular an axially extending shaft 32, e.g. B. here ring elements 31, arranged or can be arranged, with in or on these ring elements 31 in turn several, e.g. B. from two to twelve, advantageously five to ten, magnetic elements 24 are arranged or can be arranged one behind the other in the circumferential direction and preferably at least partially or all in the circumferential direction (see, for example, Fig. 4 and Fig. 5).
• the magnetic cylinder 26 can be used without any holding means acting on the substrate 02 and e.g. B. with closed in the circumferential direction Ring elements 31 can be carried out.
• holding means 33 e.g. B. gripper 33 of a so-called gripper bar
• a magnetic cylinder 26 designed in this way simultaneously serves to transport the substrate 02.
• the ring elements 31 are z. B. such as B. in Fig. 4 and Fig.
• ring-like support elements or “ring elements” should also include non-closed, i.e. ring segment-like elements, unless an explicit distinction is made.
• any fastening means used for fastening - such as those set out, for example, in connection with an exemplary embodiment according to Figures 15 to 18 and also applicable to the embodiments from Figures 1 to 14 - are not shown further presented.
• individual structural units 36 which are positioned or can be positioned in a matrix-like manner in columns and rows on or in the cylinder body 29 in the above sense, are provided for several or all magnetic elements 24, which are also referred to below as active units 36, in particular magnetic unit 36, which each include at least one magnetic element 24 and at least one suction element 34.
• the device 07 for aligning magnetic or magnetizable particles P in several, preferably in all, of the m columns of magnetic elements 24, there are several, in particular all, of the magnetic elements 24 arranged one behind the other with at least one associated suction element 34 in respective structural units 36 summarized as active units 36 and as such collectively and independently of all other such active units 36 in Can be positioned in the circumferential direction and/or detached from the cylinder 26.
• the active units 36 each include a magnetic element carrier 37, on or in which the magnetic element 24 is arranged on its outward-facing side.
• the at least one suction element 34 can be integrated into the magnetic element carrier 37 as part of it or arranged on it as a separate part.
• the active unit 36 - viewed in the axial direction of the cylinder 26 - comprises at least one suction element 34 on both sides of the magnetic element 24.
• the respective suction element 34 comprises in the outward, i.e. H. several suction openings 42 directed towards the outside of the cylinder 26 and/or lying at the level of the cylinder enveloping surface, which are, for example, in a cover element 41 which covers a suction air channel 39 (see e.g. Fig.
• a channel arrangement that cannot be seen in the figures leads from the respective suction air channel 39 through the active unit 36 to a bottom-side line interface 43, which z. B. is formed by at least one recess 43 that is open towards the inside of the cylinder (see, for example, FIG. 11) in a bottom of the active unit 36 facing the inside of the cylinder.
• a recess 43 or the line interface 43 formed here and assigned to the active unit 36 air can be sucked in from the suction openings 42 connected via the channel arrangement and the suction air channel 39.
• the active units 36 can be arranged in a matrix-like manner, directly or indirectly, on a z. B. cylindrical lateral surface 44 of the axially extending cylinder inner body 32, in particular the shaft 32, can be arranged or arranged.
• the active units 36 are directly in a matrix-like manner, i.e. H. directly on the above-mentioned Lateral surface 44 of the axially extending cylinder inner body 32 or the shaft 32 are arranged or are to be arranged, the active units 36 are or will be positioned on the lateral surface 44 in such a way that the line interface 43 is at the bottom of the active unit 36, here z. B. the free cross section of the above.
• the above Recess 43 forms here z. B.
• the air is supplied from the suction openings 42 in the relevant suction element 34 via the suction air channel 39 and the channel arrangement, via which z. B. line interface 43 of the active unit 36 formed by the recess 43 and at least one suction air opening 46 of the cylinder inner body 32 and the suction air channel 48 are sucked in.
• suitable fasteners e.g. B. in the form of clamping or screw connections, through which the respective active unit 36 can be fixed on the lateral surface 44.
• the active units 36 are not arranged or can be arranged directly on the section of the cylinder inner body 32 or the shaft 32 having the suction air openings 46, but rather several or preferably all of the active units 36 provided for a respective column as a group or on an already mentioned above, in particular ring-like support element 31, e.g. B. ring element 31, advantageously at least the outermost on both sides, but preferably all of the respective group or column of active units 36 carrying support elements 31 on the cylinder inner body 32 or the shaft 32 can be varied in its axial position.
• the preferably ring-like support elements 31 or ring elements 31 point inwards, i.e. H. in the assembled state, the side facing the cylinder inner body 32 or the shaft 32 as well as line interfaces 49 assigned to the relevant support element 31 on an outward-facing side; 51, as well as a channel arrangement that connects one or more of the inside line interfaces 49 to one or more of the outside line interfaces 51 for the passage of suction air.
• line interfaces 49 There are on the inside as line interfaces 49 z.
• recesses 49 are provided in a wall 52 pointing towards the inside of the cylinder, each of which has a line connection via one or more channels 53 running in the ring element 31 to lead through the support element 31 to outside line interfaces 51 and z.
• radial bushings 54 e.g. B. holes 54.
• the openings of individual bores 54 could also simultaneously represent the externally effective line interfaces 51, one or in particular several of the bores 54 preferably also lead into a z. B. the outer line interface 51 forming recess 51 in the outward-facing wall 56 of the support element 31.
• the ring elements 31 are or are z. B. on the lateral surface 44 in particular positioned so that respective line interfaces 49 on the inside of the ring element 31, here z. B. the free cross section of the above-mentioned recess 49, overlaps with at least one of the suction air openings 46 in the shaft 32 or the cylinder inner body 32.
• the above-mentioned recess 49 forms z. B. a chamber 49 delimited on the bottom by the lateral surface 44, with a surface of the inward-facing wall 52 of the ring element 31 lying outside the recess 49 on the inward-facing side of the ring element 31 with an opposite region of the lateral surface 44 forming the chamber 49 form a sealing sealing surface.
• the recess 43 forms z. B. a chamber 43 delimited on the bottom by the outer wall 56, the wall completely surrounding the recess 43 in the foot area of the active unit 36 forming a sealing surface sealing the chamber 43 with an opposite area of the wall 56 of the support element 31.
• the air is supplied from the suction openings 42 in the relevant suction element 34 via the suction air channel 39 and the channel arrangement, via which z. B. line interfaces 43 formed by the overlapping recesses 43 and 51; 51, the channel arrangement of the ring element 31, which z. B. line interface 49 formed by the recess 49 on the inside of the ring and at least one suction air opening 46 as well as the suction air channel 48 and z. B. sucked in via a rotary union from a suction air source located outside the cylinder 26.
• the active unit 36 preferably coordinated with one another so that continuous positioning of the active unit 36 in the circumferential direction over at least one adjustment range of two drinking air openings 46 spaced apart in the circumferential direction on the shaft 32 is made possible by the fact that in the first variant in each position lying in the relevant adjustment range at least one of the Suction air openings 46 or line interfaces 46 are completely covered by the underside of the active unit 36, while at the same time the opening cross section of the at least one suction air opening 46 or line interface 46 is at least partially connected to the bottom line interface 43 or recess 43 the active unit 36 overlaps.
• the respective pattern of the suction air openings 46 or line interfaces 46 on the cylinder inner body 32 and the position and shape of the cooperating line interface(s) 49 or recess(s) 49 on the inside of the support element 31 as well as the position and shape of the cooperating line interfaces 51; 43 or recesses 51; 43 on the outside of the support element 31 on the one hand and in the bottom area of the active unit 36 on the other hand in connection with the second variant (comprising the support elements 31) are preferably coordinated with one another so that in the circumferential direction a continuous positioning of the active unit 36 in the second variant over an adjustment range of at least two line interfaces 51 or
• Recesses 51 on the outside of the support element 31 are made possible in that at least one line interface 51 or recess 51 on the outside of the support element 31 is completely covered by the underside of the active unit 36, while at the same time the opening cross section of the at least one line interface 51 or recess 51 on the outside of the support element 31 at least partially overlaps with the bottom line interface 43 or recess 43 of the active unit 36.
• line interfaces 46; 51 than would be necessary for a single specific operational configuration.
• closure means 57; 58 is provided, by means of which line interfaces 46; not covered by the active units 36 or the support elements 31; 51 feeding bushings 47; 54 on the cylinder inner body 32 and / or on the outer circumference of the support element 31 can be optionally closed.
• this can be a kind of plug, those for closing in the relevant bushings 47; 54 can be inserted and removed again if necessary.
• bushings 47 and 54 which can be optionally closed.
• valves 57; 58 trained closure means 57; 58 are provided, which are or can be placed in the closed position in bushings 47 and 54 of bushings 47 and 54 that are not or only partially covered directly by active units 36 or by support elements 31, while at least some of the bushings 47 and 54 are completely through Active units 36 or line interfaces 46 covered by support elements 31; 51 are or can be moved into a passage position.
• a preferred embodiment of such a closure means 57; 58 is in the form of a valve 57; 58, which can be moved either into a pass position or into a closed position - without the need for removal or insertion.
• the holes 47; 54 trained bushings 47; 54 only on one side of the clear cross section with the adjoining channels 48 and 53 of the cylinder inner body 32 or the support element 31 in line connection.
• the valve 57; 58 is e.g. B.
• a sleeve 57; 58 is formed, which has a recess 61 in the side wall 62 on one side, which in a rotational position representing a passage position leads the way into the channel 48 adjoining the suction side in the cylinder inner body 32 or in the support element 31; 53 releases, while in a different rotational position through the sleeve wall the connection to the relevant channel 47; 54 interrupts.
• the sleeve-like valve 57; 58 e.g. B.
• an actuation interface 63 which can be brought into engagement with a tool 59 and via which the valve 57; 58 - in particular without having to be removed - by the corresponding tool 59 between the passage and Closing position can be rotated.
• the corresponding tool interface pair 59, 63 comes here z.
• a support element 66 is provided between two columns or groups of structural or active units 36, which has a support surface 67; 68 for supporting the substrate 02 conveyed via the cylinder 26.
• the support surface 67 can be the outwardly directed cylindrical surface 67 of an annular support disk 64 or the outwardly directed surface 68 of a support plate 71 arranged on a support disk 69, for example.
• B. be made of plastic or metal.
• the term “circular” should also include a circumference that is not completely closed, i.e. H. circular ring segment-like support disk 69 can be held.
• the magnetic elements 24 of a group being mounted on or on a common, ring-like support element 31 and can be positioned on the support element 31 in the circumferential direction, the magnetic elements 24 or a
• the magnetic element carrier 37 carrying the magnetic elements 24, viewed in the axial direction, has at least one clamping element 72 on both sides; 73, e.g. B.
• a clamping lever 72; 73 the ends of which are effective for clamping, in the assembled state on the respective end face of the ring-like support element 31, which run in the circumferential direction and are directed inwards, that is, with their surface normal pointing into the interior of the cylinder, and / or a radial removal of the magnetic element 24 or magnetic element carrier 37 by interacting with the clamping element 72 in the clamping position; 73 counteracting stop surface 74; 77 undercuts.
• This stop surface 74; 77 in a particularly advantageous embodiment, an inwardly directed surface of a groove 76 running in the circumferential direction at the end in the support element 31; 78, into which the clamping element 72; 73 with its effective, e.g. B.
• the latter can limit the variability of positioning in the circumferential direction.
• an “inwardly” directed surface here also means surfaces inclined to this, the surface vector of which is focused into the interior of the cylinder, but preferably as a circumferential surface on each end face, directed at the same point on the cylinder axis line and the clamping element 72; 73 thereby provide a stop that is directed against radial removal.
• there are two circumferentially spaced clamping elements 72; 73 or a clamping element 72; 73 is provided with two claws which interact with the support element 31 at a distance from one another.
• the clamping element 72; 73 basically also as a one-armed lever 72; 73 could be designed, it is preferably in the form of a two-armed axis 81 mounted on the magnetic element 24 or its holder 28 or a structural unit 36 comprising the magnetic element 24, e.g. B. pivot axis 81, pivotable lever 72; 73, the lever arm of which is closer to the center of the cylinder and is connected to the stop surface 74; 77 interacting, e.g. B. has a claw or clamp-like part and the lever arm located further out is used for actuation.
• the clamping element 72; 73 in a self-securing manner e.g. B.
• an effective spring element 79 in particular a compression spring 79, is spring-loaded in such a way that it is in the clamping position in the rest state, ie without actuation, and the magnetic element 24 or the holder 38 or the structural unit 36 on the support element 31 holds.
• the above Type of fastening with the fastening means 72 shown; 73, 74, 77 is fundamentally independent of, but advantageous in conjunction with the execution above.
• Structural units 36 in particular active units 36, and/or the special type of suction air guidance or supply and/or an axial mobility of individual magnetic elements 24, detailed below, and/or a mobility of individual magnetic elements 24, detailed below, in the circumferential direction.
• the connection can be released from the outside without having to remove the relevant magnetic element 24.
• a release can take place just to the extent that the relevant magnetic element 24 can be positioned in the circumferential direction against any frictional forces that may still exist, but without z. B. the risk of tipping, slipping or falling.
• an optionally provided line 84 is shown or indicated, which, in the event that the magnet 27 in the magnetic element 24 is designed to be rotatable by a motor, supplies the motor with signals and / or with electrical energy .
• the width of the panels 09 on the substrate 02 increases z. B. from the leading to the trailing end of the substrate section or substrate sheet 02 to or - z. B. with a corresponding reverse feed at the beginning of the printing press 01 - if necessary vice versa.
• magnetic elements 24 of a same group are axially movable independently of other magnetic elements 24 of the group and/or several, advantageously all but one or all of the magnetic elements 24 of at least the two closest to the end face, especially all columns or
• Groups of at least three columns or groups are axially movable in or on, independently of other magnetic elements 24 of the respective column or group Cylinder body 29, stored. This allows the above-mentioned random or systematic relative deviations of individual magnetic elements 24 to be readjusted or corrected in the axial position.
• axially adjustable magnetic elements 24 are preferably axially adjustable on the relevant magnetic element carrier 37 relative to the latter.
• several or all of the magnetic elements 24 on the cylinder body 29 or in particular a magnetic element carrier 37 can be individually adjustable in the circumferential direction.
• At least two or all of the magnetic elements 24 provided one behind the other in the same column are on or on one of the above.
• common support element 31 and can be varied with this together and independently of an adjacent group with regard to their axial position in or on the cylinder 26, in addition to this the at least two or preferably all magnetic elements 24 of these or preferably each column at respective, independently of one another in the circumferential direction on the common Supporting element 31 positionable and / or from the support element 31 detachable magnetic element carriers 37 arranged and on the relevant magnetic element carrier 37 in the axial direction within an adjustment range z.
• B. of a total of at least 1 mm, preferably at least 2 mm, are adjustable.
• the axially movable magnet 27 or the holder 28 is carried indirectly via the associated magnetic element carrier 37, which carries the respective, at least axially movable magnetic element 24 and can preferably itself be positioned variably on the ring element 31 in the circumferential direction.
• this is respective magnetic element 24 or the holder 28 in or on the magnetic element carrier 37 or its holder 28 by means of a fastening means 83, e.g. B. a screw 83, fastened in such a way that after at least partial loosening of the fastening, e.g. B. by at least partially loosening the screw 83 using a corresponding tool, the magnetic element 24 or the holder 28 is released to the extent that it is axially movable - at least within a relevant adjustment range on the magnetic element carrier 37.
• the Z. B. fastening means 83 designed as a screw 83 can be reached, for example, through a recess designed as an elongated hole 82 in a bottom area of the holder 28 receiving the magnetic element 24 after the magnetic element 24 has been removed.
• Moving or positioning the magnetic element 24 or the holder 28 encompassed by it in the axial direction is preferably carried out - in contrast to, for example, purely manual and / or tool-free movement - via mechanical adjusting means 86, 87, 89, in particular comprising a gear.
• the adjusting means 86, 87, 89 causing an axial movement can be implemented by any suitable mechanisms or gears, in the illustrated and particularly advantageous case these include a rotational movement - in particular on the input side - into a linear movement - in particular of the magnetic element 24 or of the magnetic element 24 carrying Bracket 28 z. B. directly or indirectly converting gear, in particular an eccentric drive, which causes a rotary movement of an eccentric 86, e.g. B.
• an eccentrically mounted shaft section 86 in a - here axially extending - linear movement of a carriage 87, which is directly or indirectly connected via contact with the active surface on the eccentric casing side and is mounted in a linearly movable manner in or on the magnetic element carrier 37, e.g. B. a support element 87 that directly or indirectly supports the magnetic element 24 or its holder 28.
• the eccentric 86 with its axis of rotation preferably runs radially to the cylinder 26 and/or is directly or indirectly from the cylinder 26 to the outside can be operated from the cylinder side facing. For this purpose, e.g. B.
• an actuation interface 88 e.g. B. an internal polygon 88, which using a corresponding tool, here z. B. a polygonal key, can be actuated, in particular pivotable.
• a tangential position or one parallel to the tangent is also conceivable, in which case this can then be achieved, for example.
• B. can be actuated from a side facing in the circumferential direction or from the outside via a corner gear.
• An adjustment range in the axial direction, viewed from a central position, is z. B. at least ⁇ 1.0 mm (i.e. a total of at least 2 mm adjustment path), preferably at least ⁇ 1.2 mm, e.g. B. ⁇ 1.5 mm.
• an active unit 36 comprising at least one suction element 34
• the at least one suction element 34 can be axially movable together with the magnetic element 24 on the magnetic element carrier 37.
• At least two magnetic elements 24 provided one behind the other in the same column are arranged on or in magnetic element carriers 37 which are different from one another and can be positioned independently of one another in the circumferential direction on the cylinder 26, the at least two , in particular all magnetic elements 24 arranged on the respective magnetic element carriers 37 relative to the magnetic element carrier 37 carrying the magnetic element 24 in the circumferential direction within an adjustment range z.
• B. a total of at least 1 mm, preferably at least 2 mm, are adjustable. This preferably applies to at least two or all magnetic elements 24 of all columns.
• Moving or positioning the magnetic element 24 or the holder 28 encompassed by it in the circumferential direction - in contrast to, for example, purely manual and / or tool-free movement - is preferably carried out via mechanical adjusting means 91, 92, 94, in particular comprising a gear.
• a position or an positioning movement in the circumferential direction should explicitly include not only a movement on a circular arc-like path but also a movement along a circumference - over the relevant positioning range - tangentially or parallel rectilinear movement path running to the tangent. Since this is usually a very small relevant adjustment range compared to the cylinder diameter, the linear adjustment path generally does not lead to unacceptably large imaging errors.
• the adjusting means 91, 92, 94 causing a movement in the circumferential direction can be implemented by any suitable mechanisms or gears, in the illustrated and particularly advantageous case these include a rotational movement - in particular on the input side - into a linear movement - in particular of the magnetic element 24 or the magnetic element 24 supporting bracket 28 z. B. directly or indirectly converting gear, in particular an eccentric drive, which causes a rotary movement of an eccentric 91, e.g. B. formed by an eccentrically mounted shaft section 91, in a linear movement of a carriage 92 which is directly or indirectly connected via contact with the active surface on the eccentric surface and is mounted in a linearly movable manner in or on the magnetic element carrier 37, e.g. B.
• the eccentric 91 preferably runs with its axis of rotation radially to the cylinder 26 and/or can be actuated from the outward-facing cylinder side.
• a shaft 94 encompassing the eccentric 91 or extending outwards in the area of its outward-facing end, an actuation interface 93, e.g. B. an internal polygon 93, which using a corresponding tool, here z. B.
• a polygonal key can be actuated, in particular pivotable.
• a tangential position or position parallel to the tangent is also conceivable, in which case this can then be achieved, for example.
• B. can be actuated from a side facing in the circumferential direction or from the outside via a corner gear.
• An adjustment range in the circumferential view, viewed from a central position, is z. b. at least ⁇ 1.0 mm (ie a total of at least 2 mm adjustment path), preferably at least ⁇ 1.2 mm, e.g. B. ⁇ 1.5 mm.
• the at least one suction element 34 can be movable in the circumferential direction together with the magnetic element 24 on the magnetic element carrier 37.
• a corresponding suction air feedthrough e.g. B. via relatively movable sealing surfaces or a flexible line.
• the two carriages 87; 92 can be arranged directly or indirectly on top of and/or above one another in the manner of a cross guide.
• the relevant magnetic element 24 can be positioned in the axial and/or circumferential direction in one of the above-mentioned ways.
• a remote-controlled drive means e.g. B. one the eccentric 86; 91, for example, via an electric motor driving a reduction gear.
• an assembly aid already mentioned above 97 is provided, which can be placed on the magnetic element 24 or a magnetic element carrier 37 carrying the magnetic element 24 or a structural unit 36 comprising the magnetic element 24 and through which the clamping fit or a clamping connection between the bilateral clamping elements 72; 73 and the support element 31 is detachable.
• the clamping is carried out by the assembly aid 97 or one of the assembly means 97, in particular manually actuatable, drive means 102 can not only be released and opened in such a way that the magnetic element 24 or the structural unit 36 comprising it can be removed from the support element 31, but also in an intermediate position in the strength or degree of opening of the clamping can be released to such an extent that the magnetic element 24 or the structural unit 36 is not yet completely free, but can be positioned overall in the circumferential direction on the support element 31.
• a degree of opening can be adjusted just so that there is still contact between the clamping elements 72; 73 exists, but positioning is possible when overcoming any minor frictional forces that may still exist.
• the actuating arms 98 are preferably continuously operated by the drive means 102 over an adjustment path between a clamping position in which the clamping elements 72; 73 develop the full clamping force on the support element 31, and can be positioned in a position in which the clamping is released to such an extent that the magnetic element 24 or the magnetic element carrier 37 carrying it can be removed from the support element 31.
• the assembly aid 97 comprises, in addition to a base 104, which can be placed on the relevant magnetic element 24 or on the relevant structural unit 36, actuation arms on both end faces 98, which extend in the radial direction to both end faces of the magnetic element 24 or the structural unit 36 and are in operative connection with the respective end-side clamping element(s) 72; 73 can be brought or will be brought to operate them.
• the assembly aid 97 includes the above-mentioned drive means 102, in particular an actuator 102, through which the actuating arms 98 can be moved into a first position in which they - e.g. B.
• the clamping elements 72; 73 open so far that the magnetic element 24 or the structural unit 36 can be attached to the support element 31 or can be completely detached from it, up to a second position in which the clamping elements 72; 73 develop the full clamping force on the support element 31 without A force directed opposite to the clamping force would be absorbed by the actuating arms 98.
• all positions in between can be adjusted by the drive.
• the actuating arms 98 each engage directly or indirectly on the lever arm located further out and are directed towards each other by the drive means 102 to open the clamping connection, i.e. H. each in the direction of the support element 31, and can be moved apart again to close the clamp connection.
• the actuating arms 98 are these z. B. via a coupling member 96 that connects the two lever arms located further out, e.g. B. a connecting axis 96 mounted in both outer lever arms, coupled to one another, which corresponds to the respective actuating arm 98 z. B. also serves as a point of attack.
• the respective actuating arm 98 can act directly or indirectly on the lever arm of the relevant clamping element 72; 73 work.
• any drive mechanism is conceivable as the drive means 102, through which the two opposing actuating arms 98 can be moved toward and away from each other in the above sense.
• a drive mechanism with a self-locking gear is preferred here, as is the case, for example.
• B. is given by a screw drive.
• the drive means 102 thus includes z. B. a first part 99 carrying the actuating arm 98 on one side, e.g. B. a first bushing 99, and a second, rotated against the first part 99 but axially movably mounted, the actuating arm 98 on the other side carrying drive part 99, z. B. second socket 101, as well as an internally formed screw drive, through which a not shown, and z. B.
• a manual actuation interface 103 such as a rotary handle 103, rotatable threaded spindle on the one hand and an internal thread on the other of the two parts 99; 101 of the drive means 102 which Actuating arms 98 supporting parts can be moved apart and towards each other.
• these axially positionable support or ring elements 31 can basically be fastened in any way which requires a releasable connection between the respective support element 31 and the cylinder inner body 32 and an axial relative movement enabled.
• a connection is particularly advantageous in which, in the area of line interface pairs passing through suction air, these line interfaces 46; 49 surrounding surfaces are pressed together by the connection in such a way that they form a sealing surface that is largely closed against the passage of suction air.
• a clamping device is provided for fastening, through which the support or ring element 31 is mounted on the inner cylinder body, in particular designed as a shaft 32 32 can be clamped so that the above-mentioned sealing surface can be formed.
• an inner diameter of the ring element 31 in the segment angle range is slightly, e.g. B. 2 to 50 pm, in particular 5 to 20 pm larger than an outer diameter of the cylinder inner body 32 designed as a shaft 32 in the interacting angular range.
• the magnetic elements 24 of several or all columns are provided as a respective group on or on a respective support element 31.
• the respective support element 31 is here explicitly designed as a ring-segment-like, ie ring-like support element 31 that is interrupted over an angular range and has an end 106 that leads and trails with respect to a production direction of rotation D; 107 on.
• the production direction of rotation D is defined, for example, by the arrangement of a gripper strip already mentioned above, which has grippers 33 which open and close during operation to pick up a substrate sheet 02 at the leading end 106 of the segment-like ring element 31.
• the respective support element 31 is detachably arranged on the cylinder inner body 32 enclosed by the cylinder 26 and its axial position can be varied in the released state.
• a clamping device 108 is provided, through which the two ends 106; spaced apart in the circumferential direction; 107 can be acted upon by a force directed towards one another in the circumferential direction via adjusting means 109 encompassed by the tensioning device 108.
• the segment-like ring element 31 is pressed tightly against the lateral surface of the shaft 32 via, if necessary, a slight elastic deformation, so that the above-mentioned sealing surface is created.
• the clamping device 108 engages in particular at the two ends 106; 107 of the support element 31 and can be varied in the circumferential direction via the adjusting means 109 included in the clamping device 108 in its length, which is effective for the two-sided attack.
• the clamping device 108 comprises a clamping bar 111, which is in
• Area between the leading and trailing ends 106; 107 of the support element 31 on Circumference of the cylinder inner body 32 is arranged and secured at least on one side against a relative movement to the cylinder inner body 32 in the circumferential direction.
• the clamping strip 111 and the cylinder inner body 32 are secured against rotation in the circumferential direction by pairs of stops effective in both directions of rotation.
• Such a security can be realized, for example, by corresponding deviations of the inner circumferential line of the ring element 31 and the outer circumferential line of the cylinder inner body 32, which act as stop pairs.
• such a relative anti-rotation device is provided by a so-called fitting element 112, also commonly referred to as a feather key 112, which z. B. anchored in the lateral surface of the cylinder inner body 32 and fits snugly with a recess, in particular a groove, in the clamping bar 111 or vice versa.
• a fitting element 112 with a correspondingly interacting recess is advantageous in such a way that a simple radial fitting of the cylinder inner body 32 with the clamping strip 111 is possible.
• fasteners not shown, e.g. B. screws can be provided, through which the clamping bar 111 can be fastened radially on the cylinder inner body 32.
• the tensioning bar 111 is then preferably in a relaxed state, i.e. H. Force-free state of the tensioning device 108 immediately or after loosening the above.
• Fastening means can be removed from the cylinder inner body 32 when the support element 31 still remains on the cylinder inner body 32 or can be used on the cylinder inner body 32 in the area of the interruption when the ring element 31 is already positioned on the cylinder inner body 32.
• the clamping device 108 engages at one of the ends 107; 106, preferably at the trailing end 107, static, ie in a fixed circumferential relative position between the clamping bar 111 and the relevant end 107; 106, on and at the other, preferably the leading end 106, the distance can be changed via the adjusting means 109, ie in a variable circumferential relative position between the clamping bar 111 and the relevant other end 106; 107.
• the pair of stops 106, 107 is z. B. by opposing surfaces of a hook-like projection on the clamping bar 111 and a hook-like projection 117 which engages in reverse, e.g. B. formed as a hanging edge 117 at the end 107 of the ring element 31.
• a place of engagement via the adjusting means 109 is at the relevant end 106; 107 viewed in the circumferential direction straight or at least with no more than 5 ° deviation at a point at which a tangent on the circumference of the cylinder inner body 32 runs parallel to the adjusting direction of the adjusting means 109.
• this makes it possible for the end 106; which is tightened by the adjusting means 109; 107 is subjected to a force essentially tangentially and as a result there is no radial deformation, which may occur due to a direction of force deviating from the tangent.
• the adjusting means 109 are preferably supported by a clamping bar 111 and z. B. manually operated screw drive 113, 114, e.g. B. a threaded rod 113, in particular screw 113, rotatably mounted in the clamping bar 111, and a corresponding thread 114, e.g. B.
• Pair of stops is designed and arranged to cooperate with the relevant end 106.
• the pair of stops is z. B. by opposing surfaces of a tensioning means 116 designed as a pull bar 116 and a hook-like projection 118 receiving the pull bar 116, e.g. B. as a hanging edge 118, formed on the ring element 31.
• the tension bar 116 viewed in a cross section perpendicular to the cylinder axis, is immersed with at least part of it in a recess 122 or recess 122 in the tension bar 111 that corresponds in shape and cross section in such a way that a movement of the tension bar 116 guided through the recess 122 is guaranteed along the positioning direction.
• a respective clamping bar 111 and/or a respective assigned clamping device 116 can be provided for each ring element 31 to be fastened.
• a clamping bar 111 which, viewed in the axial direction of the cylinder 26, extends over several or all of the support elements 31 arranged on the inner cylinder body 32 and/or a tension bar 111, viewed in the axial direction of the cylinder 26, over several or all of the support elements arranged on the inner cylinder body 32 31 extending clamping means 116 is provided.
• the fastening device can be retained, regardless of the number and position of the ring elements 31, with which a continuous or possibly divided Clamping device 108 cooperates to clamp it.
• one of the above would also be Clamping device 108 without pull bar 116, i.e. H. with adjusting means 109 engaging directly in the ring element 31, less suitable for continuous positioning work, since the possible positions depend on the hole spacing for the threaded rods 113.
• the tension bar 111 can be arranged and designed in such a way that it can be simultaneously forms the base support of a one- or multi-part gripper bar.
• bearings 121 carrying a gripper shaft 119 are arranged on the clamping bar 111 forming the base support.
• such a cylinder 26 is part of the above-mentioned machine 01 and/or is particularly advantageous in connection with one or more aspects for the adjustability of individual magnetic elements 24 on respective magnetic element carriers 37 in the axial and/or in the circumferential direction and/or for the formation of the above-mentioned active units 36 with respective magnet and suction element 24; 34 and/or the clamping of individual magnetic elements 24 or their holders 28 or magnetic element carriers 37 on the ring element 31.
• Drying and/or curing device radiation dryer, UV radiation dryer, UV dryer, UV LED dryer 0 1 Conveyor device, gripper circulation conveyor, chain gripper system 2 Product intake, stack delivery 3 Dryer, radiation dryer 4 Active element, element, magnetic element Alignment device, cylinder, magnetic cylinder

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• 2022
  • 2022-04-13 DE DE102022109036.1A patent/DE102022109036A1/de active Pending
  • 2022-12-22 WO PCT/EP2022/087515 patent/WO2023198301A1/de active Application Filing
  • 2022-12-22 EP EP22844081.4A patent/EP4444549A1/de active Pending
  • 2022-12-22 CN CN202280091638.3A patent/CN118829542A/zh active Pending
  • 2022-12-22 MX MX2024011137A patent/MX2024011137A/es unknown

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