EP3237211A1 - Dispositif à raclette destiné à une machine de sérigraphie et procédé permettant de faire fonctionner ledit dispositif - Google Patents

Dispositif à raclette destiné à une machine de sérigraphie et procédé permettant de faire fonctionner ledit dispositif

Info

Publication number
EP3237211A1
EP3237211A1 EP15805544.2A EP15805544A EP3237211A1 EP 3237211 A1 EP3237211 A1 EP 3237211A1 EP 15805544 A EP15805544 A EP 15805544A EP 3237211 A1 EP3237211 A1 EP 3237211A1
Authority
EP
European Patent Office
Prior art keywords
printing
length
squeegee
phase
screen
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
EP15805544.2A
Other languages
German (de)
English (en)
Other versions
EP3237211B1 (fr
Inventor
Bradley Booth
Matthias Gygi
Volkmar Schwitzky
Manfred Stöhr
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP3237211A1 publication Critical patent/EP3237211A1/fr
Application granted granted Critical
Publication of EP3237211B1 publication Critical patent/EP3237211B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/44—Squeegees or doctors
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B41F15/423—Driving means for reciprocating squeegees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor

Definitions

  • the invention relates to a squeegee device for a printing press, in particular for a rotary screen printing machine, a screen printing machine designed in particular as a rotary screen printing machine and a method for operating a squeegee device according to claims 1, 13 and 14, respectively.
  • EP 0 723 864 A1 discloses a rotary screen printing machine with a screen cylinder which forms a pressure point with an impression cylinder.
  • the counter-pressure cylinder comprises at its periphery cylinder pits, in which gripper devices are accommodated for the sheet transport.
  • gripper devices are accommodated for the sheet transport.
  • Silkscreen employed doctor blade is raised by an adjusting mechanism for the duration of Nipp begangs in a rest position.
  • the parking is done by rolling a cam roller on a cam against the action of an acted upon by a constant force actuator cylinder.
  • EP 1 246 726 B1 a printing press with a printing screen and a squeegee which can be set against it are known, which is mounted in a purely translationally movable manner on a squeegee holder which is rigidly connected to the machine frame for carrying out the adjusting movement.
  • the drive for the on and off can, for example hydraulically, pneumatically or electromagnetically, but is preferably realized via a cam.
  • EP 1 724 1 13 B1 is a storage device for a round screen of a
  • WO 03/093013 A2 discloses a screen printing machine with a screen cylinder, wherein a cylindrical in the assembled state sieve is frontally mounted on ring flanges detachably.
  • WO 2008/102303 A2 discloses a screen printing machine with a device for acting on the printing material with directional magnetic field lines.
  • the invention has for its object to provide an improved doctor blade device for a printing press, in particular for a rotary screen printing machine, a screen printing machine designed in particular as a rotary screen printing machine with such a doctor device and a method for operating a doctor device.
  • the achievable with the present invention consist in particular that thereby an improved print quality and / or less wear during printing and / or a reduced maintenance and cleaning effort is achievable.
  • the squeegee device comprises a squeegee which is in an adjusting position
  • Screen printing cylinder is adjustable, a one-and-Abstellterrorism between the Anstelllage the squeegee and a storage position enabling storage device and a drive device through which the squeegee in particular with its doctor edge in operation
  • the drive device is in this case - in particular with appropriately equipped and capable of control and drive means - set up on and off the squeegee in mutually different sequences with respect to the length of the screen form, in particular on the inner circumference of the screen form of a screen printing cylinder, different phase angles and / or lengths to effect.
  • the drive device is set up to switch on and off the squeegee with a dependent on the current substrate format and / or print image
  • the drive device comprises a controllable by a control device drive means by which the arrival and Abstell movement is mechanically independent of the machine and / or printing material phase position effected.
  • a control device is preferably a standing in signal communication with the drive means, the squeegee depending on the substrate format and / or the printed image
  • Such a doctor device unfolds its advantages, in particular in connection with a security paper, in particular printing material from security paper, printing press.
  • a squeegee is put on and off the screen printing form, in particular on an inside of a screen printing form of a screen cylinder, in a repeating, a sequence with one or more phases and one or more of the positions
  • Substrate format and / or printed image dependent dependent sequence This means, for example, that a dependent on the substrate format and / or print image dependent sequence is formed and / or selected, after which the operation on and off then takes place.
  • An on and off the squeegee - especially within the cycle - is thus preferably in dependence on the substrate format and / or the printed image
  • Solution may be the location and / or length of the repeating arrival and Abstellsequenz total to one
  • Master axis encoder synchronized. Instead or in addition to this can be to
  • the doctor is spent for a longer phase length in Anstelllage seen for a longer phase in the transport direction of the printing substrate than for a shorter substrate format.
  • the squeegee is moved into the setting position for a greater phase length than for a smaller print image length.
  • the squeegee for a larger print stripe width seen in the transport direction of the print substrate one of a plurality of print strip can be spent for a greater phase length in Anstelllage than for a smaller print stripe width.
  • Fig. 1 shows an embodiment of a printing aggregate comprehensive
  • Fig. 2 is a more detailed enlarged view of the embodiment of a
  • Fig. 3 is a schematic cross-sectional view through a counter-pressure and / or
  • Fig. 4 is a schematically illustrated development of a lateral surface segment of the
  • Fig. 5 is a schematic diagram of a) the sequence of phases within an arrival
  • Fig. 6 is a schematic diagram of the sequence of phases within an arrival
  • Fig. 7 is a schematic diagram for the sequence of phases within an arrival
  • Fig. 8 is a schematic diagram for the sequence of phases within an arrival
  • Fig. 1 1 is an end view of a second example of the execution of
  • Fig. 12 is a perspective oblique view of the embodiment of FIG. 1 1;
  • FIG. 13 is a schematic diagram of a) the sequence of phases within an arrival
  • Abstellsequenz and b) an example of an associated motion profile between a master phase position and the cam relative to the follower axis;
  • Fig. 14 shows a height in deviation from the circular line
  • a printing machine z.
  • the input side comprises a feeder 01, by which the printing machine is supplied with a sheet or web-shaped substrate 02, at least one
  • Printing unit 03 by which the printing substrate 02 one or more times is printed on one or more pages, and a product display 04, where printed products or intermediates stacked or continuously designed or wound up as a roll (see, for example, Fig. 1).
  • the printing machine as a printing machine for security printing, for example, for printing web-like substrate 02, z. B. a printing material web, or preferably for Printing on sheet-shaped substrate 02, z. B. substrate sheet 02, executed.
  • the feeder 01 for the latter embodiment is z. B. formed as a sheet feeder 01, in which a stack of supplied and to be printed
  • Substrate sheet 02 can be arranged.
  • Printing machine can in principle be based on any printing process based printing unit 03 with at least one pressure point 06; 07, z. B. as on one
  • the printing unit 03 is the substrate 02 in the range of at least one pressure point 06; 07 formed on at least one substrate side in a screen printing process, especially in rotary screen printing, printing.
  • the printing material 02 to be printed by screen printing is preferred as
  • the printing machine is designed as a sheet-fed printing press for security printing and z.
  • B. designed to print from still unprinted or pre-printed substrate sheet 02 printed sheet, especially securities sheet such.
  • the printing material 02 are in this case z. B. held as layers of a printing material stack in the trained as a sheet feeder 01 feeder 01, of which they are represented by a not shown in detail, z. B. suction cups comprehensive gripping device 08 individually recorded and isolated over a conveyor line 09, z. B. via a preferably designed as a belt system 09 conveyor system 09, and possibly a conditioning drum up to be promoted an entry area in the printing unit 03.
  • z. B. held as layers of a printing material stack in the trained as a sheet feeder 01 feeder 01, of which they are represented by a not shown in detail, z. B. suction cups comprehensive gripping device 08 individually recorded and isolated over a conveyor line 09, z. B. via a preferably designed as a belt system 09 conveyor system 09, and possibly a conditioning drum up to be promoted an entry area in the printing unit 03.
  • Printing unit 03 for example, on a transfer drum 1 1 is the
  • the web-shaped printing substrate 02 in the area of the printing unit 03 passes through a conveying path which comprises one or more rollers and / or cylinders wrapped around the web.
  • the printing unit 03 associated conveying path is preferably designed as a gripper system in which the printing material 02 is conveyed by successive transfer between a plurality of successive drums and / or cylinders in the transport direction along the transport path through the printing unit 03.
  • the end of z. B. designed as a gripper system conveying path of the printing material 02 is discharged to the third conveyor section 13.
  • the printing unit 03 comprises at least on one side of the conveying path at least one printing location 06, by which the printing material 02 can be printed or printed on one of its printing substrate sides.
  • the pressure point 06 can by a nip 06 of two rotary body 18; 21, z. B. a nip 06 between a cylinder 18 of a first printing unit 19 and a cylinder 18 serving as an abutment cylinder 21, z. B. a counter-pressure and / or transport cylinder 21 may be formed.
  • Downstream of this at least one printing point 06 can downstream in the printing material of the printing substrate 02, in particular in the pressure point 06 itself
  • a first in contact with the contact printed by the at least one printing point 06 printed material side, the printing location 06 downstream in the printing material rotational body 22 may be arranged. This cooperating with the freshly printed substrate page
  • Rotational body 16 may, for. Example, as a guide and / or transport roller of the conveyor system, as a conditioning roller for cooling or heating of the printing material or in particular for forming a further pressure point 07 as a cylinder 22 of the first-mentioned printing unit 19 subsequent printing unit 23 executed.
  • Such a second pressure point 07 may in this case be formed by a Nippstelle 07 between the cylinder 22 of the second printing unit 23 and an effective as an abutment cylinder, the z. B. by the first printing unit 06 as counter-pressure and / or transport cylinder 21 serving cylinder 21 or a different therefrom further, acting as counter-pressure and / or transport cylinder cylinder is formed.
  • the at least one counter-pressure and / or transport cylinder 14 has at its periphery at least one holding device 24, for. B. a one or a group of several grippers comprehensive gripping device 24, through which the input side, the leading end of a printing material 02 recordable and output side to the downstream conveyor line can be issued again.
  • the gripper device 24 is in this case z. B. in one in the otherwise cylindrical outer surface 27 of the cylinder 21st
  • pit 26 is arranged, the radially outwardly directed opening 28, z. B. pit opening 28, the cylinder jacket-shaped lateral surface 27 interrupts and interferes.
  • n 3
  • substrate sheet 02 formed in the circumferential direction one behind the other
  • Execution of the counter-pressure and / or transport cylinder 21 includes this in
  • such holding devices can be dispensed with (see, for example, FIG. Colloquially, the n-fold large cylinder 21 n benefits, ie n each without interruption usable for printing peripheral sections U D.
  • n-fold ie one or more times large execution includes the counter-pressure and / or transport cylinder 21 in the circumferential direction considered n, ie one or more usable as an abutment during printing peripheral portions U D , in particular
  • Cylinder circumference sections U D and n that is, one or more of the holding devices 24th comprehensive, not as an abutment during printing usable peripheral sections U N with disturbed lateral surface 27.
  • the useful as abutment during printing peripheral portions U D are colloquially referred to as so-called. "Saddle"
  • the peripheral portion U N which comprises the opening 28 and which is not suitable for the pressure and / or provided has along the continued circular line an effective rolling length L N which corresponds to the arc length reaching over the opening.
  • the usable for printing peripheral portion U N has accordingly a length L N , which simultaneously limits the possible print image length upwards.
  • peripheral section U N which can not be used as a pressure abutment can in principle be guided solely through the opening 28 of the pit 26 receiving the holding device 24 or, if appropriate,
  • downstream functional section for example a
  • Circumferential section U D in principle by the between a leading end of the interruption 28, for example, the leading end of the opening 28, and the trailing end of the following in the circumferential direction the same or next opening 28 cylinder jacket gate given the same.
  • a leading end of the interruption 28 for example, the leading end of the opening 28, and the trailing end of the following in the circumferential direction the same or next opening 28 cylinder jacket gate given the same.
  • Peripheral section U N for example, the arc length considered in the circumferential direction between the first side and the trailing side last point of the condition caused by the same holding device 24 interruption 28 in the undisturbed lateral surface 27 to understand.
  • the at least one printing unit 06 and in particular also the at least one further printing unit 07 which cooperates with the same printing material side as a printing unit 06 working after the screen printing; 07, in short as a screen printing unit 06; 07, and the printing unit 06; 07 associated cylinder 18; 22 as a form cylinder 18; 22, in particular as a so-called sieve cylinder 18; 22 formed.
  • the screen cylinder 18; 22 rolls on the lateral surface of the counter-pressure and / or
  • Transport cylinder 21 and forms in the area of his o. G. Nip 06; 07 with the counter-pressure and / or transport cylinder 21, the pressure point 06, 07 from.
  • the screen cylinder 18; 22 includes in the region of its lateral surface as a printing forme 31; 32 a screen printing stencil 31 arranged concentrically with the real or imaginary cylinder axis; 32. This is in the assembled state, for example, the front side not shown
  • the screen printing stencil 31; 32 can basically as an endless cylinder jacket or sleeve-shaped screen printing stencil or as a finite, but in the assembled state to a closed to form a slight impact in the circumference screen printing stencil 31; 32 executed.
  • the squeegee 34 thus employed accumulates a bead of printing ink which it rolls in front of it and pushes through the permeable areas of the screen printing stencil 31, 32 to the outside.
  • Dyeing aid 29, z. B. a flap 29 designed as a cover 29, be provided, through which the opening 28 is at least in the leading portion of the opening 28 temporarily covered.
  • the cover element 29 may, for example, overlap slightly with the undisturbed cylinder jacket peripheral section and in this case reduces the length L D of the maximum usable peripheral section U D for printing. This geometric shortening is caused by the premature hiring z. B. more than offset. Due to the premature setting can - in relation to the unrolling during operation - upstream pressure range beginning ideally immediately, but possibly additionally connect over a slight safety distance to the cover member 29.
  • Safety distance in the connection to the cover 29 conditional extension of not usable for printing peripheral portion U N beyond the leading edge opening and / or the distance of the earliest possible Druck Schemesterrorisms to trailing side opening edge, for example, between 10 mm and 50 mm, preferably at most 30 mm.
  • the maximum usable for the pressure length L D is limited by the machine and / or security reasons earliest possible pressure range beginning and a machine and / or security due trailing side latest possible pressure range end.
  • the latest possible pressure range end in principle with the leading end of the following interruption 28, z. B. the leading edge of the following interruption 28, coincide or - z.
  • the latest possible pressure range end in principle with the leading end of the following interruption 28, z. B. the leading edge of the following interruption 28, coincide or - z.
  • the maximum usable for the pressure length L D for example, by the length of the undisturbed circumference on the abutment, z. B. the counter-pressure and / or transport cylinder 21, or by other involved in the printing and / or transport machine elements or by the considered in the transport and / or circumferential direction, the maximum usable for printing length of the printing unit 06; 07 provided printing plates 31; 32, hereinafter also referred to briefly as the print length, be limited.
  • These variables are regularly matched to one another and essentially correspond to one another.
  • a further drying device 36 z. B. a dryer 36, in particular intermediate dryer 36 is provided, which is preferably designed as a radiation dryer 36.
  • Upstream and / or in particular downstream limiting shading 37 may be provided, which is given for example by a wall 37 of the dryer 36 receiving and open to the side of the printing material housing.
  • this comprises a single or multi-part radiation source 38 for electromagnetic radiation, for. B. for light, especially for UV light, d. H. of light with at least one predominantly in the UV spectral range proportion of emitted radiation power.
  • the dryer 36 may be designed in particular as a UV LED dryer.
  • the doctor device 33 (see, for example, FIGS. 9, 11 and 12) includes a bearing device 56, 57, 58 of the doctor which enables an on-and-off movement 34 and a drive means 39, 41, 48, through which the squeegee 34 with its
  • PAB short sequence, relates to cyclically correlated operation, in particular synchronized or clocked, to the rotational position of the counterpressure and / or transport cylinder 21 and / or cyclically correlated, in particular clocked, to the position of the printing material 02 to be printed, as viewed in the transport direction Screen printing stencil 31; 32 of the
  • Screen-printing cylinder 18; 22 is turned on and off or on and off.
  • Correlation of the squeegee motion generally relates to a medium or immediate correlation to the machine and / or printing stock phase position, i. H. for example, the position and / or the movement of a machine phase, in particular to a the
  • This machine phase can by the medium or directly derived angular position of the affected pressure point 06; 07 forming cylinder 18; 21; 22 be.
  • Betigstoffs 02 relevant size can by an angular position signal of the
  • Substrate 02 registerable transporting machine element or a
  • the cycle length L z is preferably given by the repetition length between two successive printing sections, ie the shortest possible distance between the leading ends of two successive printed image lengths. Depending on the physical variable to be considered, it can be spatially related to a path length between two locations y or an angle ⁇ or temporally to the duration between two times t. Taking into account the geometry and the
  • Transport speed profiles are these sizes interconvertible and relate, for example, to a relative position to the machine phase.
  • the cycle length L z corresponds to the sum of the length L44 of one along the transport path for the maximum usable portion pressure U D and a length L N of lying between two such sections U D , not usable for the pressure section U N.
  • the cycle length L z corresponds to the sum of the length L44 of a peripheral portion U D usable for the pressure and the length L N of a peripheral portion U N which can not be used for the pressure n-th part of the circumference of the n-large or n saddle comprehensive counter-pressure and / or transport cylinder 21st
  • Such a cycle length L z or the on-off sequence assigned to this comprises, for example, B. at least one phase P A B with the doctor blade 34 off and at least one phase P A N with staff squeegee 34.
  • the concept of the phase P A N; PAN again affect a spatial or temporal size.
  • Such a cycle can be a sequence with only a single phase P A B with the squeegee off and a phase P A N with squeegee 34 engaged or, in a further development, a sequence with several phases interrupted by a respective phase P A B with the squeegee off P AN with employee squeegee 34 include.
  • B. at least 0.5 mm, ie a determined by the degree of beyond the first BerstoffCount setting negative distance a AN of a AN ⁇ -0.5mm, against the screen printing stencil 31; 32 is employed, and the phase P AB with effectively off doctor blade 34, in which the blade edge a slight distance a AB of z.
  • the screen printing stencil 31, 32 occupies a phase P on the Anstellens or a phase P be located from the Abstellens.
  • a phase P on the Anstellens or a phase P be located from the Abstellens In order to keep the fuzzy range between actual on and off position "ON”, “DOWN” and / or the area unusable for printing as small as possible, but to allow high operating speeds without too strong, caused by the blade movement impulses is - , B. on the circumferentially in the inner periphery of the screen printing stencil 31; 32 related - length of the phase P at the Anstellens and / or the phase P from the parking z. B. between 80 mm and 200 mm, in particular between 1 10 mm and 150.
  • the sum of the length of a phase P from stopping and the length of a phase P at the Anstellens corresponds, for example, at most the length L N of the non-usable for printing Peripheral section U N , which here, for example, at least by the width seen in the circumferential direction of the opening 28 and the trailing pit edge upstream distance a s and possibly given by the length of the above-mentioned overlap of a possibly provided cover 29.
  • the doctor device 33 comprises (see, for example, FIG. 9) a control device 39, by means of which the doctor blade 34 in FIG. Correlation to the machine phase of the printing press and / or the progress of the printing material 02 is switched on and off and on and off.
  • the control device 39 is the arrival and
  • the drive means 41 is controlled in the manner by the control device 39, that the drive means during the phase P A N with staff squeegee 34 or for the corresponding duration T AN in an Anstelllage "AN operating state BZ AN and during the phase P AB with the squeegee turned off or for the corresponding duration in an operating position BZ AB effecting the setting position "AB" (see for example schematically in FIG.
  • the control device 39 can be formed by a coherent or distributed control circuit 39 or by a coherent or distributed data processing means 39 interconnected by signal technology, wherein it comprises switching and / or data processing means for carrying out a correlation mentioned above.
  • the control device 39 may be wholly or partially integrated into a machine control system connected with control and / or drive means of the printing machine in a different manner or may be provided entirely or partially specifically for the control of the squeegee 34.
  • Machine phase and / or to the printing material progress takes place z. B. by transmission of the machine phase and / or the Beyakstofffort Kunststoff representing signals S K via a signal connection 35 between the controller 39 and one
  • this can be an already provided in the machine, a registerroismilandem component, eg. B. the investment drum, associated sensor 42 may be.
  • a registerroismilandem component eg. B. the investment drum, associated sensor 42 may be.
  • the master control 42 serving as the master control 42 can be formed by such an electronic master shaft 42 or be, the several further
  • This master axis 42 can follow as a real electronic master axis 42 of the rotational movement of a real angle signal or but generated as a virtual leading axis by data processing means and be predetermined for all coupled sequential drives.
  • the signal connection 35 is then formed by the coupling to the electronic master axis 42 and executed, for example, as a bus or network system.
  • the squeegee device 33 - in particular the said squeegee 34 in a correlation to the machine phase of the printing press and / or to the progress of the printing material 02 on and off control means 39 - comprises control means 43, by which a length and / or position of at least one Anstelllage " AN "relevant phase P A N can be varied within a repeating cycle for switching on and off depending on the printing material format and / or the printed image information or information 1 (F); 1 (L B ); 1 (M) and / or is varied particular, it may in the sheet size, in particular its length and / or if the image in question, or information representing 1 (F) itself;.
  • the length and position of the phase P A N as a result can stand both for the length measured in the circumferential direction on the interior of the screen printing form and for its temporal correspondence as a duration or temporal arrangement associated with the peripheral speed.
  • two or more discrete values or value ranges for the relevant information 1 (F) can be used for the format- or image-dependent control of the phase length and / or length.
  • l (L44); l ( M ) a corresponding number of discrete phase lengths and / or positions for the phase P A N with staff squeegee 34 and / or a corresponding number of -.
  • B. at least partially each other
  • phase positions for the end of the phase P A N with squeegee 34 on - for example, in or by the control means 43 - be kept or provided.
  • I (M) value is a value for the phase length and / or -läge the phase P A N with staff squeegee 34 or for the phase position of the end of the phase P A N with employed squeegee 34 from a continuous - and z. B. limited up and down - value range is provided or provided.
  • a sequence of equidistant discrete steps should be understood as "continuous", which is conditioned, for example, by restriction or rounding down to the smallest steps to be considered and / or hand-handled in the variable to be considered.
  • control device 39 a processing of the above-mentioned correlation signals S K to the arrival and Abstellterrorism the squeegee 34 controlling signals S R taking into account a specific phase length and / or -läge for the Anstelllage "ON" phase P A N or phases P AN within one cycle or cycle length L z, respectively
  • Print image dependent phase length and / or position can in turn by one or more contiguous or distributed circuit and / or
  • Data processing means may be formed, wherein it circuit and / or
  • Phase length and / or the phase position as a function of the obtained above Information 1 (F); l (L B ); l (M) to format and / or printed image includes.
  • control means 43 encompassed by the control device 43 can - in accordance with the control device 39 itself - be wholly or partially connected to a control technology connected with other actuating and / or drive means of the printing machine, for. B.
  • Planning and / or control level 47 attributable machine control integrated or decentralized and spatially close to the drive means 41 to be controlled.
  • the length and / or position of the at least one phase P A N with squeegee 34 or the corresponding or temporal arrangement or a movement profile taking into account this length or duration is determined on the basis of an assignment rule contained in the control means 43 as a function of the information 1 to be used.
  • the ZuOrdstedsvorschrift can be held tabular or as a functional context in one of the control means 43 computational and / or storage means 55. This should also be understood as a complex rule by which, depending on the
  • the information l (F) determining the phase length and / or the phase end or the phase position; l (L B ); l (M) can the control means 43 z. B. be provided via a signal connection 45 from the planning and / or management level 47 ago. This may be the case, for example, for the information l (F) relating to or representing the substrate format F and / or the printed image; l (L B ) - take place from one of the planning and / or control level 47 attributable to the control station. At this is the corresponding information l (F); l (L B ) itself or to this information l (F); l (L B ) to be processed, for example manually selectable or input via an operator interface. In a more automated form, the information I (F); I (L B ) or to this information I (F); l (L B ) to be processed from already electronically in the planning and / or control level 47 or a pre-press
  • Print image extract existing data are obtained or be.
  • phase length or "phase position” can here, if not distinguishable, as a short form for the above “length” or “position” both the size or the position of the phase in question spatially (position, Angle) as well as - via the velocity profile - whose temporal correspondence as a duration or relative position within the synchronized cycle length L z be taken or be.
  • the times for the respective phase change and thus the phase length and the phase position are z. B. determined relative to the machine phase position and / or the printing material phase position.
  • phase length of the phase P A N with the squeegee 34 on or, for this case, preferably, an end of the phase P A N with the squeegee 34 engaged is determined by the control device 39 and / or depending on the respective printing material L02,1; L02.2 or an information l (F) representing this length, activating and deactivating the doctor blade 34 in a respective cycle Z1; Z2 (see eg Fig.
  • phase position for the beginning of the respective phase P A N with employed squeegee 34 can each have a same and z. B. fixed, but may be changed if necessary. This can, for example in the manner outlined above, lie before the beginning of the peripheral section U N which can be used for printing.
  • phase length of the phase P A N with staff squeegee 34 or at least one end of the phase P AN with staff squeegee 34 by the controller 39 in dependence from the respective print image length L B or an information L (L B ) representing this length. Under the print image length L B z. B.
  • the intermediate pressure region 44 may have continuous or discontinuous pressure regions 44. It is done for operating situations with differing print image length L B depending on the respective
  • Print image length L B or information l (L B ) representing this length activates and deactivates the doctor blade 34 in a respective cycle Z1; Z2, in which the different print image lengths L B from each other different phase lengths for the respective phase P AN with staff squeegee 34 or divergent
  • Phase relationships are assigned for the end of the respective phase P AN with squeegee 34 engaged.
  • the phase position for the beginning of the respective phase P AN with employed squeegee 34 can each have a same and z. B. fixed, but may be changed if necessary. This can already be done, for example, in the manner outlined above lie before the beginning of the usable for the pressure peripheral portion U N.
  • Phase relationship for the beginning of the respective phase P A N with employed squeegee 34 can in this case be, as above, respectively a same or a dependent on the print image start phase.
  • a start and an end of the respective phases P AN with employed squeegee 34 are determined by the control device 39 as a function of information I (M), which represent the phase position, viewed in the transport direction, of printed strips 46 of a printing area 44 interrupted by non-printable strips.
  • Print image, in particular by evaluation of z. B. are obtained in the prepress stage in data form target printed image or are. It can to
  • Execution enabling storage and drive device of the doctor blade 34 can basically be carried out arbitrarily, provided they preferably at least one appropriately on and off squeegee 34 and one of the rotary drive of the screen printing cylinder 18; 22 and / or the counter-pressure and / or transport cylinder 21 mechanically independently operable and / or operated drive 41, 48 includes. This is for example - in particular without mechanical coupling to the drive of the screen printing cylinder 18; 22 or the counter-pressure and / or
  • Transport cylinder 21 - either in a Anstelllage "AN” of the blade 34 causing operating state BZ AN and in the Abstelllage "AB” of the blade 34 causing operating state BZ AB (see, eg, Fig. 5b) with 5a).
  • Such a drive 41, 48 comprises at least one controllable drive means 41. This can, for example, be actuated as a drive means 41 which can be actuated by the action of a pressurized fluid (see, for example, in FIG. B. acted upon with pressurized fluid cylinder-piston system, such as a hydraulic or
  • Pneumatic cylinder drive or - as preferred here - as a - preferred
  • angular position adjustable motor 41 (see eg Fig. 1 1 or Fig. 12), such. B. a
  • Electric motor 41 for example, as a linear motor or preferably as a rotary electric motor 41 may be formed.
  • the drive means 41 is the output side medium or directly over a
  • the active compound can act directly on the doctor blade 34 without any gear or transmission 48.
  • Such a transmission can in a first embodiment z. B. by a linear movement of a linearly acting drive means 41, z. B. one with a
  • Pressure fluid operable drive means 41 in a on / Abstellterrorism the doctor blade 34 transmitting gear 48, for example comprising a plunger 49 and / or a one or two-armed lever 51 may be formed (see, for example, Fig. 10).
  • the coupling can be achieved via a rotational movement of a rotationally acting drive means 41, for. B. an electric motor 41, take place in a on / Abstelliolo the doctor blade 34 changing gear 48 or be realized (see, for example, Fig. 1 1 to Fig. 13).
  • the transmission 48 is formed by a cam gear 48.
  • a cam plate 52 rotatable about a frame-fixed rotational axis R52 acts a recorded in a coupling member 54 stop member 53, z. B. a role
  • the coupling member 54 may basically in the manner of the movement in the manner of a plunger on the doctor blade 34 formed transmissive, but is preferably designed as rotatably connected to a shaft 56 lever arm 54.
  • the shaft 56 is mounted pivotably about a frame-fixed pivot axis S on the frame.
  • Another, the squeegee 34 via a blade carrier 57 supporting lever arm 58 is also rotatably connected to the shaft 56.
  • the lever arms 54; 58 may represent the arms of a same two-armed lever 54, 58 or as lever arms 54; 58 different lever, be performed with the shaft 56 connected lever.
  • Pivoting movement of the shaft 56 in the direction of employment limiting stop 61 may be provided.
  • this with one of said lever arms 54; 58 or another, rotatably connected to the shaft 56 connected lever arm 62 cooperate. If necessary, this stop 61 can be adjusted to adjust the setting position "ON.”
  • the lever arm 62 cooperating with the stop 61 is here, for example, part of a two-armed lever 58, 62 formed by this and the lever arm 58 carrying the doctor carrier 57.
  • the doctor carrier 57 may be mounted for adjustment via a device not shown in more detail here on or in the lever arm 58, so that this with at least one movement component in the radial direction of the screen cylinder 18; 22 relatively movable and by a corresponding adjusting device 59 at a distance from the inside of the screen printing form 31; 32 is adjustable.
  • the drive of the cam 52 may, for example, axially or as shown via a gear 64, in particular a belt drive done.
  • a purely mechanically effective drive 66, 67, 68 is provided by which the squeegee 34 for at least one phase length, which corresponds to the width of the interruption 28 on the lateral surface of the counter-pressure and / or transport cylinder 21, in particular at least the length of the non-pressure usable peripheral portions U N , from the shell inner surface of the screen printing stencil 31; 32 can be lifted.
  • Mechanics can be designed such that the blade movement is determined in trouble-free operation solely by the controlled drive 41, 48, and the mechanical drive engages only in case of failure of the controller.
  • the coupling member 67 can basically in the manner of a movement in the manner of a plunger on the doctor blade 34 and the blade holder 57th be formed transmissive, but is preferably designed as rotatably connected to a shaft lever arm 67.
  • the lever arm 67 can likewise engage this shaft 56.
  • Hubterrorism transmitting mechanism be set such that the lifting or stopping the squeegee 34 causing curve segment in error-free operation of the controlled drive 41; 48 just without influence.
  • the stop element 68 is in this curve segment just in touching contact with the curve or at least in the not usable for pressure peripheral portions U N circumferential region preferably by a slight distance greater than zero, for example by at most 1 mm, in particular at most 0.1 mm spaced from the curve.
  • the cam 52 can basically have an arbitrarily large radius r52, ie with an arbitrarily large distance of the highest point of the curved line from the axis of rotation.
  • the circumferentially impressed curve can be single-threaded, ie only a sequence of a sequence of one or more angle segments ⁇ , ⁇ with a higher, ie on a larger radius
  • Transition regions ⁇ , 3 _>; ⁇ ⁇ are executable with a smaller curvature
  • the cam can also be designed multi-speed, ie in the circumferential direction one behind the other several sequences, each with the same pattern in the sequence of higher and deeper angle segments ⁇ ⁇ ⁇ ; ⁇ ⁇ ⁇ .
  • the cam disk 52 is or becomes correspondingly lower with a factor
  • Operating status BZ AN correspond or vice versa.
  • the cycle length L z for a doctor blade control cycle on the cam plate 52 only one - assigned, for example, hereinafter also referred to as single-phase - sequence, which only an angular segment ⁇ ⁇ ⁇ ; ⁇ , ⁇ with a the Abstelllage "AB” causing and an angle segment ⁇ ⁇ ⁇ ; ⁇ ⁇ ⁇ with a Anstelllage "AN” causing peripheral portion and each one forming a transition angle segment A ⁇ K , AB ; ⁇ ⁇ includes.
  • the cycle length L z for a doctor blade control cycle on the cam plate 52 only one - assigned, for example, hereinafter also referred to as single-phase - sequence, which only an angular segment ⁇ ⁇ ⁇ ; ⁇ , ⁇ with a the Abstelllage "AB” causing and an angle segment ⁇ ⁇ ⁇ ; ⁇ ⁇ ⁇ with a Anstelllage "AN” causing peripheral portion and each one forming a transition angle segment A ⁇ K
  • Cam 52 may be provided.
  • Abstelllage "AB” effecting and a plurality of angle segments ⁇ ⁇ ⁇ ; ⁇ ⁇ ⁇ be provided with the Anstelllage "ON" causing peripheral portions .
  • the drive 41 is; 48 of the cam 52 for his
  • Machine phase of the printing press and / or to the progress of the printing material 02 in particular to the position and / or movement of the machine axis and / or the printing material representing signals S K of the doctor connected to the master.
  • sequence and cycle - as far as the absolute angle is concerned - can be shifted in relation to one another by a fixed value, which is determined by the relative position of the cam disk relative to the machine axis.
  • the drive 41; 48 of the cam 52 thus takes place in such a way or is acted upon with a motion profile, so that the full sequences and cycles - except for possibly a fixed offset - to each other and to
  • Movement of the machine axis and / or the printing substrate are synchronized.
  • the rotational movement of the cam 52 follows the movement of the machine axis and / or of the printing material or this
  • Embodiment of the drive 41, 48 In the case of a cam gear 48 considered here, the resulting motion profile within a cycle length L z and / or sequence length phases of lower and / or increased angular velocity, wherein the size and / or duration of the lower or increased angular velocity of the Cam 52 which is related to the duration length of the Anstelllage "AN" relevant operating state BZ AN and / or the Abstelllage "AB" relevant operating state BZ AB within the cycle length L z is defined.
  • the information l (F); l (L B ); l (M) assigned by the ZuOrdnungsvorschrift the control means 43 specific movement profile can by a
  • Control means 43 be held or become.
  • camshaft-side output axis In this case, any deviations from a single-speed execution which may be present on one or both sides are taken into account by corresponding factors.
  • the expression of the printing substrate 02 can also be understood to mean other substrates, for example, in addition to planar objects, also shaped and / or hollow bodies.
  • the activation and deactivation of the squeegee can also be concerned here as a function of the printing material format and / or the printed image
  • Dyeing aid cover element, flap printing form, screen printing form, screen printing stencil printing form, screen printing stencil

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)

Abstract

L'invention concerne un dispositif à raclette destiné à une machine d'impression imprimant une matière à imprimer (02) au niveau d'au moins une zone d'impression (06, 07) par un procédé de sérigraphie. Le dispositif comprend un écran de sérigraphie (31 ; 32), une raclette (34) qui est placée dans une position approchée (« AN ») contre l'écran de sérigraphie (31 ; 32) et/ou peut être placée dans une position approchée (« AN ») contre l'écran de sérigraphie (31 ; 32), un dispositif de positionnement (56, 57, 58) permettant un mouvement d'approche et d'éloignement entre la position approchée (« AN ») de la raclette (34) et une position éloignée (« AB »), et un dispositif d'entraînement (39, 41, 48) par lequel la raclette (34), dans un mode de fonctionnement corrélé à une position de phase de la machine ou de la matière à imprimer, peut être approchée et éloignée de l'écran de sérigraphie (31 ; 32), le dispositif d'entraînement (39, 41, 48) étant configuré pour provoquer et/ou permettre une approche et un éloignement de la raclette (34) en des séquences différentes les unes des autres présentant par rapport à la longueur de l'écran de sérigraphie (31 ; 32) des positions et/ou des longueurs de phase différentes.
EP15805544.2A 2014-12-22 2015-12-09 Machine d'impression de papiers-valeur comprenant au moins une unité d'impression et procédé de fonctionnement d'un système de racle Active EP3237211B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014226869.9A DE102014226869B4 (de) 2014-12-22 2014-12-22 Rakeleinrichtung für eine Siebdruckmaschine und Siebdruckmaschine
PCT/EP2015/079126 WO2016102187A1 (fr) 2014-12-22 2015-12-09 Dispositif à raclette destiné à une machine de sérigraphie et procédé permettant de faire fonctionner ledit dispositif

Publications (2)

Publication Number Publication Date
EP3237211A1 true EP3237211A1 (fr) 2017-11-01
EP3237211B1 EP3237211B1 (fr) 2020-02-12

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EP15805544.2A Active EP3237211B1 (fr) 2014-12-22 2015-12-09 Machine d'impression de papiers-valeur comprenant au moins une unité d'impression et procédé de fonctionnement d'un système de racle

Country Status (7)

Country Link
US (1) US10427398B2 (fr)
EP (1) EP3237211B1 (fr)
JP (1) JP6588096B2 (fr)
CN (1) CN107107605B (fr)
DE (1) DE102014226869B4 (fr)
RU (1) RU2656971C1 (fr)
WO (1) WO2016102187A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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DE102017202941A1 (de) 2017-02-23 2018-08-23 Koenig & Bauer Ag Verfahren und Vorrichtung zum Betrieb einer Siebdruckmaschine
EP3401114A1 (fr) 2017-05-12 2018-11-14 KBA-NotaSys SA Élément de sécurité ou document et son procédé de production
US11990857B2 (en) 2019-05-29 2024-05-21 Woods Hole Oceanographic Institution Rotational feedback control system and method
DE102020101680A1 (de) 2020-01-24 2021-07-29 Koenig & Bauer Ag Verfahren zum Betrieb eines Siebdruckwerkes in einer Druckmaschine
DE102021105634A1 (de) * 2021-03-09 2022-09-15 Koenig & Bauer Ag Siebdruckeinheit und ein Verfahren zum Betreiben einer als Siebdruckeinheit ausgebildeten Bogendruckeinheit

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US3990363A (en) * 1970-10-07 1976-11-09 Stork Amsterdam N.V. Method and device for printing a web or a rectangular piece of material
NL8702412A (nl) * 1987-10-09 1989-05-01 Stork Brabant Bv Rakelophanging voor een meerkleuren-rotatie-zeefdrukmachine.
AU696709B2 (en) 1995-01-24 1998-09-17 Kba-Notasys Sa Rotary screen printing machine for sheet printing
EP1023178B1 (fr) * 1997-10-14 2002-09-25 Gallus Ferd. Rüesch Ag Groupe de serigraphie
DE19949099C2 (de) 1999-10-12 2003-08-14 Sonko Konstruktions Und Sonder Rotationssiebdruckmaschine
JP2003305935A (ja) * 2002-04-12 2003-10-28 Komuko Sangyo Kk 少なくとも表面に油脂分を有する被印刷物に印刷する方法
DE10219845C1 (de) 2002-05-03 2003-11-20 Koenig & Bauer Ag Siebdruckmaschine und Siebzylinder
JP4508686B2 (ja) * 2004-03-12 2010-07-21 株式会社小森コーポレーション 液体供給装置
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CN203496432U (zh) * 2013-08-22 2014-03-26 杨群生 一种用于丝网印刷的刮墨刀刮墨角度调节装置
JP6233799B2 (ja) * 2013-09-13 2017-11-22 株式会社小森コーポレーション ロータリースクリーン印刷装置

Also Published As

Publication number Publication date
DE102014226869A1 (de) 2016-06-23
JP6588096B2 (ja) 2019-10-09
US10427398B2 (en) 2019-10-01
JP2018500214A (ja) 2018-01-11
EP3237211B1 (fr) 2020-02-12
WO2016102187A1 (fr) 2016-06-30
DE102014226869B4 (de) 2022-03-17
CN107107605A (zh) 2017-08-29
CN107107605B (zh) 2020-05-05
US20170348963A1 (en) 2017-12-07
RU2656971C1 (ru) 2018-06-07

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