EP3294555A1 - Druckwerk sowie verfahren zum betreiben einer rakeleinrichtung in einem druckwerk - Google Patents
Druckwerk sowie verfahren zum betreiben einer rakeleinrichtung in einem druckwerkInfo
- Publication number
- EP3294555A1 EP3294555A1 EP16717654.4A EP16717654A EP3294555A1 EP 3294555 A1 EP3294555 A1 EP 3294555A1 EP 16717654 A EP16717654 A EP 16717654A EP 3294555 A1 EP3294555 A1 EP 3294555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- drive
- doctor blade
- drive means
- printing unit
- 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
Links
Classifications
-
- 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
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
- B41F15/423—Driving means for reciprocating squeegees
Definitions
- the invention relates to a printing unit and a method for operating a
- Doctor device in a printing unit according to claim 1 or 44 Doctor device in a printing unit according to claim 1 or 44.
- WO 2007/1 19167 A2 discloses a machine for multi-stage processing and / or processing of sheet-shaped substrates with a screening machine comprising a round screen and a squeegee and a plurality of upstream offset printing units.
- a screening machine comprising a round screen and a squeegee and a plurality of upstream offset printing units.
- Impression cylinder elastically deformed and thereby employed.
- the squeegee is moved radially inward so that the deformation is canceled out when the squeegee contact continues to exist and the round wire lifts off from the impression cylinder.
- the round screen with doctor blade is lifted altogether during Nipp preparegang the pit.
- a printing press is known from EP 1 820 646 A2, which in one embodiment comprises a screen printing machine comprising a round screen and a squeegee, as well as several
- EP 1 717 028 A2 also discloses a printing machine having a screen printing unit and offset printing units, wherein, however, the screen printing cylinder is mounted on a printing machine
- Counter-pressure cylinder pit corresponding peripheral portion carries a round screen supporting protection.
- US 5,630,363A discloses a printing machine having a flexographic printing unit and an offset printing unit.
- EP 0 723 864 A1 discloses a rotary screen printing unit with a screen printing form and a doctor blade, wherein the doctor blade is turned off via a cam control during the passage of a counterpressure cylinder pit through the nip point and subsequently turned on again until the next passage.
- Machine frame arranged blade holder purely translationally movable. In addition to this, in the case of wear, a linear readjustment of the doctor blade can take place.
- EP 1 724 1 13 B1 is a storage device for a round screen of a
- Eccentric bearing on one of the sides also an axle pitch variable.
- About an axialrelativbewegliche helical toothing in the drive train is a circumferential position relative to the impression cylinder variable.
- a squeegee carrier receiving a squeegee is in each case pivoted to set a squeegee angle by a motor provided for this purpose.
- the doctor blade plates supporting the doctor carrier are in turn pivotally mounted on a frame part for engagement and disengagement of the doctor blade and can be pivoted by a pressure medium cylinder.
- the in-set position center distance to the impression cylinder is hereby adjustable by a screw acting as a stop.
- About one Adjustment eccentric is also a contact line of the squeegee in Nipp between Siebdruck- and counter-pressure cylinder present tangential direction possible.
- the AT 343 075 B relates to a squeegee device for a cylinder printing machine with a doctor blade, which by pivoting about a coincident with the contact line pivot axis in the squeegee angle adjustable, and by pressing one on the
- Doctor blade supporting inflatable body from the inside against the pressure cylinder is adjustable.
- the invention has for its object to provide a printing unit and a method for operating a doctor device.
- Enhancement stage can be ensured by a - preferably particularly variable running - print-through printing high quality without this being done at the expense of overall productivity in the printing.
- variable to be used printing stage especially screen printing stage
- axes of movement of actuating movements of a doctor blade are located straight or largely in their theoretical direction of action.
- this is not only in print-on and print-Ab, but also to spend in a maintenance and / or set-up.
- adjusting movements of the printing device are realized via as few movement axes as possible.
- a particularly advantageous printing unit comprises a printing material which prints a printing material on at least one printing location in accordance with a screen printing method, for example a printing press.
- a screen printing form, a squeegee which is employed in a Anstelllage with a doctor edge against the screen printing form and / or against the screen printing form can be adjusted, and an on-and-off between the Anstelllage the doctor and a storage position
- enabling storage facility which z. B. medium or directly on a screen printing medium or directly supporting frame is arranged. Further, it comprises a drive means by which the squeegee to the On and off of this screen printing, and by the drive means comprising drive means by which the arrival and Abstellterrorism of the doctor is mechanically independent of a rotary drive of the screen printing form and of the printing material promoting conveyance effected.
- the arrival and Abstellterrorism causing drive means via a drive means controlling means reproducible in at least one Abstelllage effecting operating condition and at least two other different operating conditions defined different occupying each taking a Anstelllage with each other Radial relative positions and / or Anstell proposedn between doctor and screen printing result.
- a printing material is applied to at least one printing location according to a screen printing method
- Impression cylinder and a doctor device comprises the latter a screen printing form, a squeegee against the screen printing form in an Anstelllage is adjustable, in the region of both end faces of the screen printing cylinder, the squeegee medium or directly overlapping and a stop and Abstellterrorism between the Anstelllage the squeegee and a storage position enabling storage device, a drive device through which the squeegee on the screen printing form on and off this abiller, and one of the drive means comprising drive means by which the arrival and Abstellterrorism the doctor mechanically and independently of a rotary drive of the screen printing form and conveyed by a substrate conveyor cyclically and synchronized to a
- the printing unit comprises a control device connected to the drive means for its control and the squeegee with control means depending on the size of the printing material and / or the printed image of varying phase lengths and / or positions.
- a squeegee against the screen form in an Anstelllage is adjustable, with an on and off the squeegee to the screen form via a drive device cyclically and synchronized to a machine and / or printing material phase position, and wherein the cyclic on and off of the doctor blade by a specially provided for this purpose drive means mechanically independent of a rotary drive of the screen printing form and of a
- the doctor blade is switched on and off with different amounts depending on the same cycle length
- sheet-shaped substrates comprises at least one z.
- B. og printing unit which works as a Betiklane first type than after a rotary printing process is trained.
- the sheet-like substrate is on a Betikstoffweg by the machine between a substrate template and a display through the working according to the rotary printing through printing stage feasible and inline printable.
- the printing stage which operates according to the rotary screen printing method comprises a screen-printing cylinder and a squeegee which can be positioned in the screen printing cylinder in or adjacent to the nip point to form an impression cylinder from the inside against a screen printing form, and a doctor blade directly or indirectly
- the printing image is provided in the printing material path by a printing method which differs from the screen printing method in direct printing on the printing substrate which transfers the printing material.
- the printing stage which operates according to the rotary screen printing method comprises a screen printing cylinder which is mechanically independent of the rotary drive of the impression cylinder and rotatory
- Counter pressure cylinder (04; 06) mechanically independent drive means.
- printing material sheets are processed on their way through the machine to the exit in at least one of the rotary screen printing methods
- Printed on a rotary screen printing method and before or subsequently printed by at least one further printing stage by a different screen printing method printing process wherein the printing material in the operating according to the rotary screen printing printing stage passed through a Nippstelle between a screen printing cylinder and a counter-pressure cylinder and a squeegee in the screen printing cylinder in a Section area at or adjacent to the nip synchronized to a machine and / or printing stock phasing to one of Screen printing cylinder worn printing form is switched on and off.
- the printing material sheets are printed in the machine by at least one further printing stage according to a different from the screen printing direct printing method.
- sheet-shaped substrates is such a machine as Weitergnacsund / or finishing machine and in addition to this one with respect to the printing material decoupled and independently operable printing machine with one or more operating according to a planographic printing stages provided.
- the bearing device comprises bearing means, by which at least within a Anstelllage and a Abstelllage comprehensive adjustment range of the squeegee along straight and / or one in the unloaded Touch condition, d. H. in the state of first contact of the screen printing plate without additionally impressed doctor blade pressing, extending and extending perpendicular to the doctor edge longitudinal extent of a doctor blade covered by the doctor blade takes place.
- Printing machine includes this z. B. a screen printing form, a doctor blade in a
- Anstelllage employed with a doctor edge against the screen printing form and / or against the screen printing form can be adjusted, and a storage device with a squeegee medium or directly supporting storage means which pivotable about a blade edge parallel to the pivot axis at one - especially the
- Screen printing form medium or directly supporting - frame is arranged and causes a pivoting of a squeegee angle formed between a doctor blade of the doctor blade and the screen printing form during pivoting.
- the pivot axis of the bearing means coincides in a preferred embodiment with a theoretical contact line, which by a in the unloaded contact state of the doctor, d. H. in the state of the first contact of the screen printing form by the doctor blade edge without additional impressed doctor blade pressing, extending line is given.
- Fig. 1 is a schematic representation of the execution of a flat
- FIG. 2 are schematic representations of the advantageous embodiment of a
- Fig. 3 is a schematic sectional view of a counter-pressure cylinder
- FIG. 4 shows an oblique view of a bearing device which supports the doctor blade on a frame
- Fig. 5 is a schematic representation of the doctor blade or the doctor blade in a
- Fig. 9 is a perspective oblique view of running as a screen printing
- Fig. 10 is a schematic representation of different relative positions between
- 1 1 is a sectional view of a first embodiment of a screen printing device covered by the screen printing;
- Fig. 12 is a sectional view of a second embodiment of a screen printing included screen printing device
- FIG. 13 shows a longitudinal section through a screen printing device encompassed by the screen printing unit
- FIG. 14 shows a first exemplary embodiment of a squeegee which can be varied in the position of the contact line
- FIG. 15 shows a first exemplary embodiment of a blade which can be varied in the position of the contact line.
- a machine 01 which processes and processes a two-dimensional substrate B as a substrate B comprises at least one processing substrate B printed by a rotary printing process, in particular a screen printing process, in particular in the form of a printing stage 02.
- This is, for example, by a substrate B on at least one of its pages in at least one printing point 03 at least simply printing unit 02 given.
- the printing unit 02 is designed in particular as a rotary printing unit 02, in particular as a rotary screen printing unit 02, wherein the printing point 03 between a form cylinder 04, in particular screen printing cylinder 04, formed printing cylinder 04 and effective as an impression cylinder 06 printing cylinder 06 is formed.
- the processing stage 02 or the printing couple 02 may include a plurality of forme cylinder 03 or 03 pressure points, wherein the forme cylinder 04 then z. B. with different impression cylinders or advantageously with a same impression cylinder 06 together.
- machine 01 with respect to the processing of the printing material B may be limited to this one, working by the screen printing process stage 02, in a preferred embodiment of this processing stage 02, however, in
- the machine 01 for the case of several other, different to the printing process stages 07; 08; 09; 1 1 processing steps 07; 08; 09; 1 1 different types and / or processing stages 07; 08; 09; 1 1 include a same kind, z. B. in the manner of a printing stage and / or in the manner of a
- Conditioning stage In the case of further processing stages 07; 08; 09; 1 1 of a same kind may be of different types and / or same type, for.
- Digital printing processes in particular inkjet printing processes, operating printing stages 07; 09; 09 '(see eg Fig. 1).
- the processing stage 02 operating according to the screen printing method or the
- Rotary screen printing 03 - which concerns the printing material - provided without inline coupling to one or more after a planographic printing process, in particular by the offset process, working processing stages 07.
- the machine 01 comprising the at least one screen printing stage 02 is thus preferably a single-stage or preferably multi-stage further processing machine 01, in particular
- Refining machine trained, which input side in z. B. a temporally upstream and independent production step at least simply printed, in particular at least one or more times by the offset printed substrate B is supplied.
- Finishing machine 01 trained machine 01 z. B. at least two of
- the printing material B supplied on the input side has, for example, a printed image applied by offset printing at least on one side.
- the further processing or in particular finishing machine 01 is then limited to a further processing and / or finishing and is preferably without a planographic printing method, in particular without the
- this machine 01 may preferably be a printing press, in particular a flat and / or offset printing stage, working according to a gravure or gravure printing method
- Direct print on the substrate B transmitted Betikch 09 include. Alternatively, or in addition, it can be used as a further Betikcut also after a Digital printing process operating pressure level include, which can also serve for subsequent finishing and / or individualization and / or regularly reached not achievable by planographic production speed.
- a plant for the production of printed products from -. B. still unprocessed or already pre-processed - B can then, for example, both one or more such processing or in particular finishing machine 01 and at least one z. B. faster running, not shown here explicitly
- Plane printing machine in particular offset printing machine, with one or preferably more according to a planographic printing process, for.
- the offset method working printing stages, in particular printing units include. While these may in principle comprise one or more additional printing stages operating in their particular inline to continuous printing material path from their original to the delivery, they preferably do not use a processing stage which operates according to a throughprint process, in particular a screen printing process.
- the printed products can be produced
- a machine 01 designed as a further processing machine 01 comprises
- High-pressure method in particular by the Flexod jerk method working and / or the printed image in direct printing on the substrate B transferring processing stage 09, which is designed for example as gravure or preferably as high-pressure, in particular as a flexographic printing 09 or -druckwerk 09 (z Figs. 1, 2a and 2b).
- a powdering processing stage 08 such as a z. B.
- a calendering comprehensive conditioning stage 08 be provided as conditioning 08.
- the latter may also be referred to as a cleaning stage 08 and / or a suction and / or blowing agent and / or mechanical stripping medium or other suitable for cleaning means comprehensive conditioning stage 08 be executed.
- a printing unit 09 operating in the flexographic printing method can be applied by means of this ink in a first advantageous embodiment variant, and in a second paint variant to be preferred, in particular transparent paint.
- a second paint variant to be preferred, in particular transparent paint.
- the working after flexographic printing unit 09 as so-called.
- “Lackwerk” 09 formed and includes, for example, in a pressure fluid supply, not shown, or in a pressurized fluid supply means a supply of a paint applied to the pressure point.
- such a processing stage 09 serving for processing for example such a printing unit 09 or coating unit 09 designed as gravure printing or preferably as high-pressure printing unit 09, could also comprise one or more offset printing stages 07 inline in addition to the screen printing stage 02 combined offset and further processing or finishing machine 01
- Offset printing units trained further processing machine 01 the printing unit 02 operating according to the printing process in a first embodiment as printing ink on the substrate B aufminedes printing unit 02, z. B. screen printing 02, in a second, to be preferred embodiment varnish, in particular
- the printing unit 02 which operates according to the through-printing method, is designed as a so-called lacquer printing unit 02, in short coating unit 09, and comprises, for example. B. in a pressure fluid supply, not shown, or in a
- Pressure medium supply device a supply of a paint applied to the pressure point.
- Finishing machine 01 trained machine, in the printing material can further at least one formed with means for accelerating the drying process processing stage 1 1, z. B. in the manner of a drying assisting conditioning stage 1 1, in particular a dryer 1 1, be provided.
- a dryer 1 1 is z. B. the printing or screen printing stage 02 downstream and / or designed as a thermally effective dryer 1 1, in particular as IR-T rocker and provides, for example, an improved paint history, d. H. a result in the particularly smooth surface structure of previously printed with ink and / or paint bodies.
- the processing stages 07; 08; 09; 1 1 of the machine 01 may be provided in a common frame or in separate, but interconnected racks.
- the frame associated with the screen printing stage 02 or the latter comprises this associated part of the frame, for example, on at least one of its front side lying on the forme cylinder 04 pages an optionally temporarily closable opening 12, for. B. an inspection and / or maintenance hatch 12 through which - at low
- Assembly costs - a blade change and / or a visual inspection of the
- the machine 01 comprises on the input side a Substratzufufhr adopted 13, z. B.
- Extensions extension 16 be provided by which the transport time and thus the drying time is extended to the formation of the ready-to-pick-up container on the display 14 and / or on which one or more additional, formed with means for accelerating the drying process processing stages 17th , z. B.
- one or more, for example, as a radiation dryer 17, in particular as a UV dryer 17 running dryer 17 are provided.
- a device 18 for quality control may also be provided, which may be, for example, an image acquisition device, for example a camera, or at least may comprise.
- the substrate B for the above-mentioned machines and in variation to subsequent illustrations basically also web-shaped and the
- Machine 01 may be designed as web-processing and / or processing, the printing material B is given in this preferred embodiment by arcuate substrate B, wherein the machine, but at least the Siebdruckcut 02 and possibly one or more downstream downstream processing stages 07; 08; 09; 1 1 comprehensive part, designed as bow-and / or processing.
- sheet here means, for example, any type of sheet-like substrates B which, as individual material sections, eg not like web-shaped printing stock, are guided simultaneously through all processing stages 07, 08, 09, 11 of the machine 01, but rather a limited one Section length, so that they have left at least a first already processed processing stage 07, 08, 09, 11, before they come into operative contact with a last of the processing stages 07, 08, 09, 11, in particular flat and preferably rectangular printing material sheets B which may be formed, for example, from paper, from cardboard, from cardboard, from plastic, from metal or from a composite of a plurality of said materials
- flat means, for example, that one length and one width of the printing material sheet B in each case the 50-fold, in particular at least 100 times or even at least the 500-fac hen the thickness of the bow corresponds.
- sheet processing machine 01 this includes, for example, in addition to the z. B. referred to as an investor 13 substrate template 13 in the Bedruckstoffweg the first processing stage 02; 07; 08; 09; 1 1; 16
- upstream for example, as a system 19 or sheet 19 designated
- the substrate delivery device 14 is formed by a delivery 14, which is designated, for example, as a product delivery 14.
- the screen printing stage 02 and possibly one or more of the above-mentioned further processing stages 07; 08; 09; 09 '; 1 1; 16 is between the substrate supply means 13 and the substrate discharge means 14 are the one or more processing stages 02; 07; 08; 09; 09 '; 1 1; 16
- the feeder 13 the one as printing stock on z. B. a stacking plate
- mounted sheet pile receives, preferably not shown in detail sheet separating organs and sheet transport organs, which
- the feeder 13 is equipped with a nonstop device (not shown here).
- a nonstop device not shown here.
- the z. B. also referred to as a stack feeder or sheet feeder 13 follows downstream, for example, a z. B. as a belt table, especially as
- the sheet feeder 19 preferably comprises a feed table, wherein in the working cycle of the printing material to be supplied sheet in the same to their movement
- the attacks is z. B. a particular as
- Oscillating gripper 22 trained bow acceleration means 22 downstream, which aligned with respect to the leading edge and optionally with respect to a side edge printing material B a z. B. as a feed drum 23,
- transfer drum 23 designated conveying means 23 supplies.
- the sheet B can also be moved into its correct position during the movement of the oscillating gripper and can be transferred in an aligned manner to the feed drum 23.
- the feed drum 23 passes the coming of the conveyor line 21 forth Substrate B directly or optionally via one or more other transfer drums on the transfer and / or serving as an abutment and preferably as a rotating body 06; 24; 26 trained funding 06; 24; 26 of the downstream first processing stage 02; 07; 08; 09; 09 '; 1 1, in particular in the case of
- Further processing machine 01 z. B. a preferably as a rotating body 24, in particular also referred to as a cylinder 24, transfer cylinder 24 or drum 24, formed funding 24 a gravure or high pressure compression stage 09,
- a flexographic printing stage 09 or a z. B. also designed as a rotating body funding a tikformlos Working Bedruckcut 09 '.
- Anfeedrommel 23 directly or possibly one or more further transfer drums to a z. B. referred to as a rotating body 26, in particular as a cylinder 26 or drum 26, trained funding 26 of the respective conditioning stage 08 passed.
- Non-fluid in particular “non-pressure fluid-carrying” (i.e., non-ink-bearing or non-paint-carrying) roller 31 - acceptance device 31 is formed.
- the cleaning stage 08 may for example be designed similar to a printing unit, wherein one or more rollers 31 with a printing substrate B transporting counter-pressure cylinder 31 cooperate, but without applying a pressurized fluid or fountain solution to the substrate surface.
- this conditioning stage resembling a printing unit is designed without a pressurized fluid supply or supply. You can in contrast, however, with a discharge device or a container for receiving the removed impurities, eg. As powder.
- the cleaning tool 31 can thus be arranged to act together as a roller 31 in rolling contact with the surface to be cleaned. Ion of an alternative, not shown, it can also be arranged as a suction or blow mold contactlessly interacting with the surface to be cleaned.
- Substrate sheet B in its peripheral portion holding means 32 for example, in each case one or more in the circumferential direction from each other z.
- the printing material B are either transferred directly or preferably via in each case at least one further, z. B. as a rotating body 33 formed conveyor 33, in particular also referred to as a transfer drum 33, promoted, which also in their
- Peripheral area holding means 34 for example, one or more in each case
- a dryer 1 in particular as a thermal dryer 1 1 formed and preferably the display 14 and the optionally provided delivery extension 16 upstream conditioning 1 1 provided in Bedruckstoffweg, so can also in this transport over a rotating body 36, in particular denoted as cylinder 36 or drum 36, formed conveying means 36 take place, which or which for the application of desiccant, z.
- a heated gas stream or IR radiation with an appropriate means, for. B. a hot air blower or preferably a radiation source 37, in particular IR radiation source 37, as
- Machining tool 37 interacts.
- the delivery to a further processed printing material B' to delivery 14 promotional conveyor system 38 which is preferably designed as a chain conveyor system 38 and for guiding and promoting a z. B. formed as a chain 39 circulating traction means 39, a number of sprockets 41 formed as drive and / or guide wheels 41 and for receiving and delivering the printing material B to be opened and closing, not shown here holding means, eg. B. gripper includes.
- the previously open gripper to take over the sheet are closed, whereas they are used to deliver the sheet in the area of the display 14 z. B. be opened above the stack to be formed.
- this is designed as a printing stage 09 operating according to a direct printing method and / or high-pressure method, in particular as a printing stage 09 operating according to the flexographic printing method, in which case the cylinders 24; 29 as
- Counter-pressure cylinder 24 and form cylinder 29 are formed. It carries the
- the printing plates are replaced by at least one roller
- Anilox roller dyed which in turn is colored by a Einärbesystem.
- the latter may comprise a roller immersed in a paint or varnish stock which colors the raster screen and a squeegee absorbing excess ink on the raster roller.
- the inking system is executed by a the chamber roller inking chamber doctor.
- z. B. as an inkjet printing stage 09 'running pressure stage 09' or a further development with an additional additional pressure step is the pressurized fluid, d. H. the printing ink or varnish, applying tool 29 z. B. as one or more printheads, especially inkjet printheads formed.
- the printing stage 02 which preferably takes the form of a screen printing stage 02 and functions according to the throughprint method, comprises a mold cylinder 04 designed as a screen printing cylinder 04.
- a printing form 43 carried by the forme cylinder 04 is for the preferred case of a printing unit 02 operating according to the screen printing method by a screen printing form 43 is given for the case of rotary printing, for example, as a so-called.
- Round sieve 43 which forms the or at least a portion of the cylinder jacket and a template with the negative of the printed image of a on the substrate B, ie the sheet B or a protective length of a web-shaped substrate B, to be applied repeat length.
- the printing form z. B. executed as Flachsiebdruckform.
- Flachsiebdruckform In the case of
- Rotational pressure rotating printing form 43 and the printing material B move synchronized in operation via a mechanical or electronic coupling so relative to each other that each unwound equal lengths to each other.
- both lateral surfaces roll over the printing substrate B to be printed substantially without slippage.
- the pressure point 03 is through the Nippstelle between form cylinder 04 and
- a scraper 44 which acts as a squeegee 44, which effects a dynamic pressure of the pressurized fluid F held by it on the printing form 43.
- Round sieve 43 is the z. B. operatively rotationally fixed in the interior of the screen printing cylinder arranged doctor blade 44 in the region of a free, d. H. not clamped end portion, pressed with a pressing force from the inside against the rotating screen.
- the free, effective for the doctoring end portion may be through the front, effective as a doctor blade 52 part of the doctor blade 44 itself or - as shown here - by a part of a specially enclosed by the doctor blade 44 blade 52. In both cases, the doctor blade 52 thus designated forms a doctor blade edge on the end cooperating with the printing form 43.
- the squeegee 44 in particular the squeegee blade 52 formed by it or encompassed by it in the region of the free end, is - in particular from the inside - forming a Also referred to as squeegee angle ⁇ , preferably acute angle ⁇ (ie ⁇ ⁇ 90 °), z. B. one between 40 ° and 85 °, in particular between 70 ° and 85 °, to which - in particular trained as a round screen 43 - screen printing 43 engageable or hire.
- the hiring takes place in a section area at or adjacent to the nip 03 with the impression cylinder 06, z. B. within a peripheral portion in the screen printing plate 43, for example, at most ⁇ 10 °, in particular at most ⁇ 7 ° (to the
- the doctor angle ⁇ should be understood to mean that angle, viewed in a sectional plane perpendicular to the axial direction of the printing plate 43, at the contact point P of the doctor blade 52 between its free end and a doctor carrier 54 carrying the doctor blade 44 in the unloaded, d. H. without contact force, just touching state extending longitudinal extent and the present at this contact line course of the perpendicular to the axial direction extending inner circumferential line, d. H. the present at the touch point P.
- the contact recognizable in the cross-sectional representation as the respective contact points P forms, viewed in the axial direction, a contact line L1 which preferably extends axially parallel, which here also designates as a "theoretical" contact line L1 due to the assumption of an unloaded, ie non-deformed operating state becomes.
- adjusting force can be a deflection, in particular reduction, of the actually effective at the contact point P effective angle over the above-mentioned manner via a deflection of - in the manner outlined above as part of the squeegee 44 or covered by this - defined doctor angle ⁇ are present.
- This possibly present under load deviation in the inclination of the present in the near-near blade section and / or the blade angle ⁇ corresponding inclination can for the subsequent subsequent consideration of preferred adjustment of the squeegee angle ⁇ (in the above definition) are neglected or disregarded. It is for example less than 10 °, z. B. less than 5 °.
- doctor angle ⁇ - as it is defined here in the just unloaded contact state, for example, can be in the range of 70 ° to 85 ° and be variable in the manner set out below.
- This angle ⁇ is -.
- B an originally flat and straight shape assuming - for example, even under load and possibly resulting deformation in the doctor blade 54 directly adjacent doctor blade section.
- one or more retaining devices 32 offset from one another in the circumferential direction are provided on the circumference of the impression cylinder 06, through which the printing material sheet B can be received on the input side by the upstream conveying means and output to the subsequent conveying means.
- the recording, holding and dispensing by any suitable means, for. B. based on a switchable negative pressure and / or releasable positive locking, be formed.
- holding means 32 a one or a group of several grippers 46 comprehensive gripping means 32, through which the printing material B on the input side at its leading end are receivable and output side to the downstream conveyor line again.
- Gripper device 32 is in this case z. B. in a provided in the otherwise cylindrical surface of the cylinder 06 and axially extending recess 47, also referred to as pit 47, arranged, whose radially outwardly directed opening, z. B.
- Counter-pressure cylinder with a circumference on which several printing material sheets are to be successively received are the appropriate number of Holding devices 32 and pits 47 in the circumferential direction one behind the other and each separated by a corresponding number of undisturbed cylinder jacket sections 48, also referred to as saddle or saddle pressure, separated.
- a peripheral section U N which can not be used as a pressure abutment can in principle be formed solely by the opening of the pit receiving the holding device 32 or, if appropriate, by this opening and, if provided, a functional section adjoining the forward and / or downstream side, for example an overlap area of a possibly upstream side provided, only here dashed lines indicated inking 49 and / or be followed by setting distance a s to the trailing edge of the following pit opening, be given.
- An o. G. Eingarg Anlagen 49 may be provided to allow early setting of the doctor blade 44 in the forme cylinder 04 before reaching the pit end on the abutment-forming impression cylinder 06. It may be provided, for example, in the manner of a pivotable flap 49 on the impression cylinder 06, which pushes after gripping the printing material B via the gripper device 32 and thereby shortened in the circumferential direction length of the pit opening at least in the leading end of the printing material.
- An effective at unwinding circumferential length of the screen printing cylinder 04 should be just or an integer multiple of the usable by the sum of the usable for the print length of the usable peripheral portion U D and not usable for the print length of the disturbed, not usable as a pressure abutment peripheral portion U N Cycle sounds L z correspond.
- solutions are proposed by which, individually or advantageously, combinations of widely differing requirements for the desired printed image can be met, that is, an optimum print quality for the respective parameters can be achieved with the least possible effort, despite a wide variety of screen finenesses and printing fluid consistencies. This is not only, however
- Finishing machine 01 trained machine 01 of particular advantage since such a machine 01 is to be able to process in a very diverse manner pre-printed intermediates in a variety of types and / or different print or substrate formats.
- the squeegee 44 is provided with its squeegee blade 52 with regard to a screen printing form 43, in particular a unit of length along the
- doctor blade 44 is part of a doctor device 51, which - such. 4 can be seen - in addition to the doctor blade 44 itself and possibly the blade 44 carrying and axially over at least the length of the doctor blade 44 extending blade carrier 54 at least one medium or directly on a frame 61, in particular on both sides, stocked storage facility 53 includes.
- one end of the doctor blade 44 and the doctor carrier of the doctor blade 52 on both sides of respective side parts 59 of the z. B. also the
- Form cylinder 04 medium or directly supporting frame 61, bearing bearing device 53 includes.
- the doctor carrier 54 is for example by a single or Mehrteilge Traverse formed 54, on which the doctor blade 44 is arranged.
- the doctor blade 52 may be formed by a front part of the doctor blade 44 itself, or may be included as a separate part of the doctor blade 44.
- the doctor blade 44 comprises a doctor blade 52 and a one- or multi-part doctor blade holder 58, on which the doctor blade 52 z. B. is releasably attached.
- the blade carrier 54 carrying the doctor blade 44 is, for example, in or on storage means of the respective
- the squeegee device 51 further comprises one or more of the squeegee 44 and the squeegee 44 carrying doctor blade 54 relative to the screen printing or forme cylinder 04 moving drive means 56; 57, which z. B. via corresponding signal connections 62; 63 with the drive means 56; 57 controlling control means 66; 67 a merely schematically indicated control device 64 are connected.
- first drive means 56 providing an activation and deactivation of the doctor blade 44 and / or second drive means 57 providing a change of a doctor angle ⁇ are provided.
- the drive means 56; 57 controlling control means 66; 67 of the control device 64 may be provided spatially in a same structural unit or distributed in a signaling-connected control system, wherein, for example, the control of the first drive means 56 concerning first
- Control means 66 and the control of the second drive means 57 concerning second control means 67 may be provided.
- the control means 66; 67 may be configured as a control circuit or as a program routine programmed in data processing means. You can hereby as control modules 66; 67 a common control device 64 executed.
- the bearing device 53 which movably supports the doctor carrier 54 and thus the doctor blade 44, is now designed and set up, the doctor 44 or the latter carrying it
- Blade carrier 54 to pivot about an axis of rotation R0 of the forme cylinder 04 axis-parallel pivot axis S1 and / or the radial position of the doctor blade 44 relative to Rotation axis R04 of the forme cylinder 04 to vary.
- at least one drive means 56; 57 provided.
- two bearing means 53 are provided for mounting the doctor carrier 54, basically only one of the bearing means 53, but preferably each bearing device 53, can have a corresponding drive means 56; 57 may be provided.
- the bearing device 53 in particular its pivoting effecting adjusting means, designed and arranged to pivot the doctor blade 44 and the doctor carrier 54 by the relevant
- Round screen perimeter length changes.
- d. H. in print-on o. g. Section line V and the contact line L1 coincide or based on the
- the bearing means 53 comprises a on the frame 61 and the two side parts 59 of the frame 61 by a z. B.
- doctor device 51 this is embodied and arranged in such a way, in particular the bearing device 53 and its relative position to the screen printing form 43, that the pivot axis S1 of the or the
- Doctor carrier 54 supporting lever arm 68 and lever arms 68 coincides with the theoretical contact line L1.
- this maximum offset for example, at most a tenth Part, in particular at most the twentieth part of the round screen inner radius present at the axial height of the interaction with the doctor blade 44 and / or, for example, at most 10 mm, preferably at most 5 mm
- the lever arm 68 can basically in different ways, for. B. by the
- Eccentricity of the frame 61 rotatably mounted eccentric bearing or preferably be designed as an arm of a multi-arm or in particular one-armed lever 69. This can be in or on the frame 61 or in or on the respective side part 59 via z.
- the at least one or preferably both the blade carrier 54 supporting lever arms 68 are pivotable by at least one, preferably by in each case one in particular remotely actuable drive means 71, briefly drive 71, which or which already comprises an above drive means 57.
- the drive device can in principle be designed in various ways to cause a pivoting of the lever arm 68 with appropriate actuation of the drive means 57.
- the drive 71 and / or the drive means 57 directly or via a transmission between a -. B.
- the coupling in the attack points 72; 73 are preferably gimbals mounted on the frame 61, so that in addition to the pivotal movement one possibly explained below in more detail
- the drive means 57 is designed and arranged in a preferred embodiment, reproducibly more than two defined, respectively different positions of the lever arm 68 representing drive operating states, or briefly operating states to approach.
- the drive means 57 is designed and set up, at least within a control range, for example, a
- Swiveling the lever arm 68 by an angle of 15 °, preferably at least 20 °, corresponds to allowing continuous placement.
- This continuous placement is basically to be realized by a wide variety of embodiments of the drive device 71, for example via a - possibly arcuate - rack, which by a z. B. electric motor driven pinion is pivoted.
- the drive of the lever arm 68 via a trained as a motor spindle drive 71 drive 71, wherein the spindle comprising the spindle gear and the spindle driving motor 56, in particular electric motor 57, in a unit as a spindle linear drive
- the preferably designed as an electric motor 57 drive means 57 is of the
- Control device 64 forth, in particular by the implemented in this and appropriately configured and / or programmed control means 67, so controlled that by the - preferably as a motor spindle drive 71st
- trained - drive 71 are continuously approached at least those operating conditions that within the o. g. Actuate lying pivot positions of the lever arm 68 represent.
- the drive means 57 embodied as an electric motor 57 can be embodied as a position-adjustable or as a stepping motor or can form a control loop for reproducible position taking with an external position sensor.
- the electric motor 57 is designed as a servo drive.
- the two actuators 71 or their drive means 57 which act indirectly on the doctor blade 44 or on the doctor carrier 54 can basically be made synchronous with one another by the control device 64 or the relevant control means 67.
- the doctor angle ⁇ can now be changed to any new circumstances and / or during operation for optimizing the printing result without manual adjustment effort.
- a device which is not further described here can be provided, by means of which the Contact line L1 in tangential direction parallel to the Rundsiebachse or at an angle to this can be adjusted.
- the adjustment can be possible both in the printing direction or against the printing direction.
- the type of adjustment is preferably realized by motor and thus an adjustment in printing operation possible.
- Rotary drive 71 to a preferably straight or at least substantially with the theoretical contact line L1
- the doctor blade 44 and the doctor blade carrier 44 carrying the doctor blade 44 can be varied in its or their radial position relative to the screen printing plate 43.
- this radial position is variable in a setting range, which in addition to stopping the doctor 44, d. H. a lifting of the blade edge from the undisturbed
- Endabiteses or doctor blade 52 and / or the round screen 43 which z. B. on the assumption of lying in the touch point zero position one points to a negative distance a A B of z. B. to - 0.2 mm or more negative.
- shutdown of the squeegee 44 is here and below, however, in an alternative embodiment - unless explicitly excluded - including a displacement of the squeegee 44 to the inside in such a way that the squeegee 44 still after "shutdown" - z. B. slightly - in contact with the screen printing form 43 remains, however, for example, the relief caused by the radial displacement of the doctor 44 to further inside, a lifting of the previously by deformation of the abutment, z. B. the impression cylinder 06, or the substrate B employed Siebdruckform 43 results.
- An adjustment causes in this case a deformation of the lifted screen printing plate 43 by a displacement of the doctor blade edge outwards by deformation of the screen printing plate 43 at least one contact with the abutment, for. B. the impression cylinder 06, or the substrate B results.
- the doctor 44 or the doctor carrier 54 is for performing o. radial adjusting movement by at least one, preferably by in each case one in particular remotely operable
- Drive device 74 short drive 74, adjustable, which or which already o. G. Drive means 56 comprises.
- the drive device 74 may basically be formed in the most diverse manner, in order to effect, with appropriate actuation of the drive means 57, a location of the doctor blade 44 or of the doctor carrier 54 with respect to the relative position of the doctor edge to the round screen inside.
- the drive 74 and / or the drive means 56 in principle directly or via a transmission between a -. B. with respect to the frame 61 and / or relative to the escape of
- the mechanically effective independent of the rotary drive radial effective drive 74th and the bearing device 53 carrying the doctor blade 44 or the doctor carrier 54 is preferably set up by appropriate means and designed to remotely vary the stroke of stopping and stopping, in particular at least the end position relating to the setting position "ON" corresponding activation of the drive means 56 by the control means 66 set up for this purpose itself or alternatively via a drive of a drive, not shown, which limits the adjusting movement stop means.
- the variation of the strength of the setting is effected, for example, with path-controlled doctor blade adjustment via a variation the end position which concerns the setting position "AN", in which preferably a control of the drive means 56 itself with respect to a position to be adopted or by possibly a position of a stop means bounding the adjusting movement is varied.
- the variation of the intensity of the adjustment can take place via a defined variation of a force acting on the drive means 56 on the output side in the adjustment direction.
- the drive 74 and / or in particular the drive means 56 is designed and set up to reproducibly more than two defined, in each case from each other
- the specific operating state BZ AN , BZ ' AN conditional on the associated approach position "ON” can be defined, for example, in the control device 64 as the operating state BZ AN ; BZ' AN relevant for the positioning position the Anstelllage "AN” relevant and by the control device 64 for the Anstelllage "AN”
- BZ AN taking into account the operating condition BZ AN ;
- BZ ' AN can have one Operator interface done and / or effects of an evaluation of originating from an inspection system data can be effected.
- Bermmetter stands, the screen printing form 43, however, for example, the discharge, which is caused by the radial displacement of the doctor 44 to further inside, from the abutment, z. B. the impression cylinder 06, or the substrate B is lifted.
- the discharge which is caused by the radial displacement of the doctor 44 to further inside, from the abutment, z. B. the impression cylinder 06, or the substrate B is lifted.
- Anstelllage "AN” is given by a displacement of the doctor edge to the outside, in which by deformation the previously lifted screen printing plate 43 at least in contact with the abutment, eg., The impression cylinder 06, or the substrate B.
- the drive means 56 which is mechanically independent of the rotary drive, and the squeegee 44 or the squeegee carrier 54 are arranged to vary the stroke of switching on and off, in particular the end position concerning the setting position, via the activation of the drive means 56. Basically, this one
- Flachsiebdruckbacter be transferred with formed as a flat screen printing form or be.
- the drive means 56 is designed and set up, at least within a control range, for example, a positions of the doctor edge in at least one strictlystell Scheme between a parking position or a Abstelllage "AB" representing operating state BZ A B and a Anstellposition or a an operating position "AZ" representing operating position BZ A N; ⁇ - for example, within at least one setting range of z. B. -0.2 to +0.2 mm, in particular in at least one adjustment range of -0.2 to 0.5 mm, a to allow continuous placement.
- 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.
- This continuous placement is basically to be realized by a variety of embodiments of the drive device, for example via an electric motor caused pivoting movement or otherwise.
- the bearing means 53 is formed with corresponding bearing means 81, 82 for the linear points.
- This linear drive 74 can be realized in different ways to turn on and off the doctor blade 44 or blade edge along a rectilinear adjusting movement.
- a continuous and controlled, d. H. defined is possible, is also the measure of parking and / or in particular Hiring, d. H. the positive or negative distance, along the linear adjusting movement and thus also the adjusting force, also referred to as doctor pressure, variable and / or adjustable.
- the linear movement could in principle be formed by arbitrarily designed, linear movements causing drive means 74.
- the linear drive of the squeegee 44 or of the squeegee carrier 54 preferably takes place by an electric motor.
- This can be realized by an electric linear motor or, preferably, by a drive 74 designed as a spindle drive 74, which is or are preferably operated by an electric motor.
- the spindle drive 74 is preferably designed as a ball screw 74.
- the spindle gear and the spindle driving motor 56, in particular electric motor 56, can - as exemplified - be summarized in a spindle linear drive forming unit.
- the preferably designed as an electric motor 56 drive means 56 is of the
- Control device 64 forth, in particular by the control means 66 implemented in this and implemented accordingly and / or programmed such that controlled by the - preferably designed as a spindle drive 74 - drive 74 continuously at least those operating conditions BZ; Z AB ' , BZ A N; BZ'AN be approached, which represent the lying within the above setting range relative positions of the doctor blade 44 and doctor blade edge to the circular sieve 43.
- the drive means 56 embodied as an electric motor 56 can be embodied as a position-adjustable or stepper motor or can form a control loop for reproducible positional input with an external position sensor. In a preferred embodiment, it is used as a servo drive 56, preferably with electronic position and / or speed and / or
- Actuation mechanically synchronizing coupling z. B. a synchronous spindle or a crossmember, may be provided.
- the controller 64 be adjustable, z. B., however, if necessary, be synchronized with each other electronically.
- the doctor blade 44 and the blade carrier 54 can now on and off and the doctor blade pressing, ie the extent of going beyond the first touch stopping, and possibly the extent of the gap when parking without manual control effort to possibly new circumstances and / or even during operation to optimize the printing result to be changed.
- two independently to be provided drives 74 and / or drive means 56 are provided.
- the doctor pressure in the region of the two near-end doctor blade sections can be set differently from one another and / or a possibly off-centered, ie asymmetrical with respect to the doctor blade length
- the bearing device 53 and / or drive device 74 for the - preferably along the rectilinear at least in the adjustment range - on / off is executed and set up that the adjusting movement between the arrival and the Abstelllage "ON"; "AB" of the doctor 44th extends at least within said minimum range along the longitudinal extent of the doctor blade 52 extending in the unloaded contact state.
- Under the "longitudinal extent" of the doctor blade 52 is in this case in the unloaded state perpendicular to the axial
- the adjusting movement accordingly takes place along a lying in the doctor blade plane direction, which may be understood in the case of a significant thickness of the doctor blade as doctor blade plane, for example, parallel to the surface running average cutting plane of the doctor blade.
- the driving device 74 set forth so far for the on and off movement can basically serve only for activating and deactivating the doctor 44 in the context of the pressure-on and pressure-off or for maintenance or armament purposes.
- the stated drive means 74 can be used for the arrival and Abstellterrorism together with controlling them
- control means 66 to be executed, the squeegee 44 operatively - d. H.
- an above Eingarg Anlagen 49 shorten the pit opening during rolling at least and / or cover the gripper 46 and thus the earliest possible hiring the doctor 44 to the round screen 43 and in the direction of the impression cylinder 06, and thus a timely structure of the Farbwulstes and back pressure in front of the squeegee 44.
- Machine and / or printing material phase position ⁇ ⁇ wherein the arrival and Abstellsequenz z. B. is formed by a cycle having one or more each interrupted by a shut-off P B A P A N Anstellphasen respectively, may in principle
- Substrate B determining control device done.
- the drive means 56 and / or the control means 64 controlling the drive means 56 or the relevant control means 66 are in signal connection to a machine and / or printing material phase position ⁇ ⁇ and the control of the
- Angular position delivering and also referred to as Leitachsgeber 76 sensor 76 or preferably as a machine phase position predetermining and therefore representing electronic master axis 76 is executed.
- Printing material phase position ⁇ ⁇ representing information is indicated in Fig. 4 by way of example with the machine and / or printing material phase position ⁇ ⁇ symbolizing angle symbol.
- the drive device 74 in this case comprises a controllable drive means 56, by which the on and Abstellterrorism of the doctor blade 44 mechanically independent of the machine and / or printing material phase position ⁇ ⁇ is feasible.
- the drive device 74 is thus preferably by the drive means 56 without mechanically rigid coupling to a machine element and / or printing material ⁇ ⁇ representing machine element in at least one Anstelllage "AN” causing operating states BZ A N or preferably in several the Anstelllage “ON” effecting Operating states BZ A N; BZ ' A N and in at least one the Abstelllage "AB” causing operating state BZ A B can be brought (see, for example, Fig. 5).
- Doctor device 51 may be formed by the control device 64 and connected to the drive means 56 control means 66 and formed
- a length and / or position and / or number of phases P AN pertaining to the setting position "AN" are determined within a fixed and repetitive sequence with regard to their cycle length L z, depending on the printing material format F. 1;. F.2 and / or the respective print image information l B varied depending on rotation of the impression cylinder 06 can be passed through a corresponding number of cyclic length L, for the case of a large multiple execution.
- Signal connection are made available from a planning and / or control level 77 forth. This may be the case, for example, in the case of a substrate format F.1; F.2 and / or the printed image relevant information - via a signal connection from one of the planning and / or control level 77 attributable to the control center or via a signal connection for the transmission of Data from product planning or via a signal connection for the transmission of data from prepress.
- L B i; L B 2 or an information l B representing this length is the phase length of the phase P A N with doctor 44 engaged or, in this case, preferred, an end of the phase P A N with doctor 44 engaged by
- Control device 64 or the implemented control means 66 determines and / or takes place in dependence on the respective printing substrate L B1 ; L B2 or a length representing information l B on and off the squeegee 34 in a respective cycle Z- ⁇ ; Z 2 (see, eg, Fig. 5), in which the deviating Bedruckstofflägen L B1 ; L B2 deviating phase lengths for the respective phase P A N with employed squeegee 44 or - for this case preferably - different phase positions for the end of the respective phase P A N are employed with squeegee 44 employed or are.
- the phase position for the beginning of the respective phase P AN with employed squeegee 44 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.
- the print image length L D is z. B. in this case be understood that length, the flow side by the first and return side is limited by the last given by the round screen 43 printing plate to be provided inking.
- a hereby given intermediate pressure region 78 can have continuous or discontinuous pressure regions 44. It is done for operating situations with differing print image length L D as a function of the respective print image length L D or one of these length
- phase position for the beginning of the respective phase P A N with employed squeegee 44 can in each case a respective 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.
- the phase position for the beginning of the respective phase P AN with doctor 44 engaged can in this case be, as above, each one the same or one dependent on the print image beginning phase.
- phase PAN can be provided with an employed squeegee 44 and a plurality of phases P AB with staff squeegee 44.
- a start and an end of the respective phases P AN with an employed squeegee 44 by the control device 64 and the control means 66 in dependence on information l B is determined, which is the considered in the transport direction phase position of non-printable strips represent discontinuous print strips 79 of a print area 78.
- the information relating to the printing pattern l B to number and / or position of the print strip 79 is based, for example, on data obtained by evaluating the printed by the printing stage 02 and the printing plate 43 to be printed image, in particular by evaluation of z. B. are obtained in the prepress stage in data form target printed image or are. In this case, to be printed strip, which can be replaced by z. B. narrower not to be printed stripes are interrupted despite their discontinuity to larger
- Strips be summarized or 79.
- control device 64 and the included control means 66 within the preferably fixed cycle length L z, a ratio between the on the length of the swept
- control means 66 comprises a control circuit and / or control routine for the above-mentioned cyclic and synchronized locations, adjusting the amount of at least stopping, ie adjusting the force applied in the phase of the Anstelllage "AN", manually via an operator interface, for example, via an operator interface provided at the control station, and / or varied.
- this is both with a drive 71 and possibly corresponding storage means for varying and / or setting the doctor angle ⁇ and with a drive 74 and possibly corresponding storage means for turning on and off the squeegee 44 provided on the designed as a round screen 43 printing plate 43.
- the bearing device 73 is designed such that when setting the doctor angle ⁇ by means of the drive means 71 provided for this purpose, the drive 74, in particular linear drive 74, which causes the squeegee 44 to come on and off is forcibly moved by the doctor 44.
- drive 74 and, if appropriate, corresponding bearing means for switching on and off the squeegee 44 are arranged on the lever 69 pivotable about the pivot axis S1, in particular on the lever arm 68 carrying the squeegee carrier 54, wherein the drive 74 is effective between a lever-fixed point of attack and a rakellyfesten attack point is.
- the rocket-proof point of attack is provided by a bearing means 81 configured as a rack carrier-fixed carriage 81, which bearing means 82 are configured in a guide means 82 which is designed as a lever-mounted guide 82, in particular a linear guide 82
- the linear guide 82 is mounted linearly movable.
- the linear guide 82 is arranged on the lever 69 or lever arm 68 and oriented so that - in at least o.
- the lever 69 or lever arm 68 is in this case preferably one in o. G. Way stored with an approximately coincident with the doctor edge pivot axis S1.
- the frame-fixed point of attack 73 for the squeegee angle change causing drive 71 can basically at the Siebdrucklace 02 associated frame 83 and Frame part 83 may be provided, which forms, for example, the operatively fixed space printing frame 83.
- the screen-printing form 43 is mounted on a frame 61 of a screen-printing device 86 in a medium or direct rotatable manner.
- the screen printing form 43 can be changed by means of a drive device 88 which engages the frame 61 and can be actuated remotely and can be actuated at a distance from the axis to the impression cylinder 06.
- the screen printing form 43 and the doctor blade 44 through the
- Drive device 88 for Achsabstands for Achsabstands selectedung between the impression cylinder 06 and the screen printing plate 43 jointly movable.
- they are preferably mounted directly or indirectly on the same one-piece or multi-part, generally movable frame 61.
- the impression cylinder 06 and possibly at least one transfer drum 33 comprehensive lower part of the printing unit 06 is also referred to as Druckwerksunterbau 91 and can be used as a total in the engine room as einbringbares
- Sub-module 91 may be formed.
- the movable frame 61 forms together with the components arranged thereon z.
- the on and off screen printing device 86 which includes at least the screen printing form 43 carrying screen printing cylinder 04 and the engageable with the screen printing plate 43 and / or employee doctor 44 in addition to the frame 61.
- Drive device 88 moved.
- bearing device 53 with bearing means 81; 82 and a drive device 74 for switching on and off the squeegee 44 also includes this of the screen printing device 86 and, for example, moved along.
- the drive means 87 effecting the axial distance change is more preferred
- L R As maintenance and / or set-up L R , for example, for set-up or maintenance work, for example as a cleaning pad for cleaning the screen printing 43 and / or as a set-up for a printing form change in the case of z. B. formed as a flexible flat screen and up or unwound printing form 43 be taken or be.
- the center distance is a z.
- the drive means 88 included by the drive means 87 may be formed as a fluid-operated actuator 87. It can this as a
- pressure-medium-operated cylinder-piston system 87 in particular as Mehr eins- cylinder-piston system 87 with the output side to be carried out a total of at least three defined piston positions.
- it comprises altogether exactly or at least three different defined operating states BZ D ; BZ A ; BZ R
- the cylinder-piston system 87 is this double-acting at least with regard to the placement in pressure-on-position L D , ie with a both in Abstellraum and in
- Anstellraum bepressbaren Kolbenhubhunt formed.
- the cylinder-piston system 87 is preferably operated pneumatically.
- the operating state BZ D assumed in pressure-on can - as far as the output-side state of the drive means 87 is concerned - be basically freely receivable and limited only by a maximum end position to be assumed.
- the operating state BZ D actually assumed in pressure-on can be limited and / or varied, for example, by a positioning device 107 set out in greater detail below.
- the drive means 87 encompassed by the drive device 88 can be considered to be at least one of the two farthest apart of the two operating states BZ R ; BZ D given adjusting range continuously adjustable drive means 87 executed.
- the drive device 88 is designed, for example, as an electromotive linear drive 88 and / or as an electric motor driven spindle drive 88.
- Drive means 87 is then correspondingly by an electric motor, such as an electric linear motor or z. B. executed by an electric motor servo drive
- Screen printing cylinder 04 and the screen printing cylinder 04 bearing frame 61 can basically in any kind -.
- Counter-pressure cylinder axis radial movement component is effected or is effected.
- the drive device 88 and corresponding bearing means 89 are designed and arranged such that the screen printing plate 43 standing in contact with the unloaded contact comes out of this position
- this movement can be carried out in a variant by a linear movement with appropriately designed bearing means.
- Pivot axis S2 to Rundsiebrotationsachse R43 preferably greater than the length of the outer radius r43 of the undisturbed screen printing form 43rd
- a respective front-side frame wall of the movable, in particular pivotable frame 61 of the screen printing device 86 can by the z. B. shown in Fig. 4 Frame wall 59, z. B. the side part 59, itself or by a side part 59 comprehensive multi-part side wall 92 may be formed.
- the bearing device 53 carrying side part 59 releasably on a frame wall 93, z. B. a stronger frame plate 93, the frame 61 and be included together with this of the multi-part side wall 92.
- Silkscreen 43 carrying frame 61 includes in addition to the one or more parts
- Side walls 92 one or preferably a plurality of cross braces 94; 96; 97, which may be formed, for example, by one or more traverses 96 and / or by one or more shafts 94 (see below) and / or by one or more axial guides 97 (see below).
- the frame 61 pivoting drive means 88 is effective between a respect.
- the screen printing device 86 fixed to the frame attack point 98 and a spatially fixed, for example. With respect to the printing unit frame 83, fixed point 99.
- the point of application 98 on the side of the screen printing device 86 by a coupling to a relative to the screen printing device 86 frame-fixed and
- a drive device 88 may be provided per end face, both of which on a extending from one to the other side shaft 94, z. B. synchronous shaft 94, attack.
- Coupling of the drive means 87 encompassed by the drive device 88 can be on the output side via one or more transmission and / or transmission mechanism 101, for example via a lever mechanism 101 (see, for example, FIG. 11), or else, except for any extension-side output elements provided take place directly (see, for example, FIG.
- this includes a through the drive means 87 operable lever mechanism 101, in particular toggle mechanism 101 having a first rocker 102 and a rotatably connected thereto second rocker 103, wherein the respective free ends of these rockers 102; 103 at the above attack points 98; 98 are fixed (see eg Fig. 12).
- the drive means 87 could in principle act on one of the rockers 102, 103, but acts in the case described here via a lever arm 104 on the rotatably connected to one of the rockers 102, 103 shaft 94.
- piston-cylinder system 87 which is by the rocker 102; 103 trained toggle more or less strongly angled, so that for the three correspondingly provided operating conditions BZ D ; BZ A ; BZ R the three above-mentioned layers L A ; L D ; L R for pressure-on, pressure-off and can be set up or waiting.
- the drive device 88 is the drive means 88 on both sides - possibly via a driven side and / or a fixed-point extension - directly, ie without further movement mechanisms, to the points of application 98; 99 coupled.
- the three operating states present on the output side cause BZ D ; BZ A ; BZ R again the three above-mentioned positions L A ; L D ; L R.
- Positioning device 107 for remotely operated and / or remotely controlled adjustment and / or variation of the defined pressure-on position L D provided.
- the positioning drive 106 may refer to the location of a storage of the screen printing cylinder 04 concerned radial bearing or the position of a member of the on and off relevant
- Axial distance a z. B. at least by at least 0.1 mm, preferably by at least 0.2 mm, possibly even by 0.3 mm and more, variable.
- the pressure-on position "L D " may be selected so that just just contact between the round screen 43 and counter-pressure cylinder 06 takes place, which is also referred to as a so-called. "Kissprint”.
- an axial distance a can also be selected for the pressure-on-position "L D ", so that in print-on-position "L D " of the screen printing form 43 but offset doctor blade 43 is greater than zero between the circular sieve 43 and the impression cylinder 06 is present.
- the round sieve 43 in this case only touches the counterpressure cylinder 06 when the doctor 43 is in an engaged and pretensioned position due to slight deformation.
- the positioning drive 106 may, for example, change the length of one of the two rockers 102; 103 effect, for example, by itself as a rocker or part of the rocker 102; 103 acts and is variable in its longitudinal extent between frame-fixed and abretem end.
- the positioning drive 106 can be designed as an actuator that performs a stop element 108.
- the positioning drive 106 moves a wedge-like stop 108 of a wedge-shaped stop device 109, which cooperates with a second wedge-like stop 1 1.
- One of the two stop elements 108; 1 1 1 is now operational with respect to the frame 61 of the screen printing device 86 fixed to the frame and the other operationally fixed space, in particular with respect to
- To set the stopper 109 is one of the stop elements 108; 109 adjustable in the manner of the wedge drive relative to the other.
- the positioning device 107 and the positioning drive 106 are preferably designed and set up, at least within an operational range
- Center distance a by z. B. at least 0.2 mm, but at least equal to at least 0.1 mm, to allow continuous placement.
- This continuous placement is basically to be realized by a wide variety of configurations of the positioning drive 107, for example via a rack, which by a z. B. electric motor driven pinion is moved.
- the positioning drive 106 is designed as a motor spindle drive 106, wherein the spindle gear comprising the spindle and the spindle driving motor, in particular electric motor, in a structural unit as
- the screen printing plate 43 or the screen printing cylinder 43 carrying screen printing cylinder 04 and / or an end-side bearing device 1 12 of the screen printing plate 43 is axially movable relative to the impression cylinder 06.
- Storage facilities 1 12 axially movable in the printing unit frame 83 or preferably in o. G. Frame 61 of the total relative to the impression cylinder radially relatively movable
- the end-side storage facilities 1 12 are for this purpose, for example, in or on frontal support elements 1 13, z. B. side wall 1 13, recorded or arranged, which in turn are mounted on one or preferably on a plurality of axially extending cross struts 97, in particular axial guides 97.
- the two support elements 1 13 could be axially connected to each other and a training common movable rack. Preferably, however, the two support elements 1 13 are axially independent and movable separately. A movement can be done manually or via respective, not shown axial drives or be effected.
- manually moving and / or movable support members 1 13 means 1 14, z. B. clamping devices 1 14, be provided for locking the current position.
- swiveling part frame 61 may be formed, middle or immediate the
- Screen printing cylinder 04 stored. It is z. B. on the frame 83; 61, which by the printing unit frame 83 itself or also preferably by the o. G. Subframe 61 may be formed, medium or directly arranged above the bearing 53 arranged. The latter can directly on the screen printing cylinder 04 medium or directly superimposed same frame 83; 61, z. B.an o. G. Frame plate 93, or indirectly via frame walls 59 on a screen printing cylinder 04 medium or directly overlapping frame part, z. B. to o. G. Frame plate 93, be arranged.
- the doctor blade 44 medium or directly supporting bearing means 122; 123 is provided, via which the doctor blade 44 is mounted so relatively movable to the round screen 43 in the machine, so that the position of the contact line between blade edge and screen printing 43 in Rundsiebinnern in or opposite to the present in operation rotational direction is variable.
- the variability or mobility can z. B. in a tangential, one against the
- Inner tangent inclined direction or in the circumferential direction in particular along an réelletangente or an inner circumferential line section, but at least be given along a direction with at least one component of motion in the inner circumferential direction of the screen printing form.
- the bearing device 53 is preferably together with the drive device 74 causing the on-and-off movement on an o. G. Rack wall 59 mounted, which, however, contrary to the above, not fixed, but in the manner of a movable
- Bearing plate 59 relative to the screen printing cylinder 04 medium or directly overlapping frame wall 93 is mounted relatively movable.
- the storage device 53 together with
- a guide device 122, 123 which forces the frame wall 59 onto the actuating path, in particular one between the frame walls 59; 93 effective rolling or sliding bearing guide 122, 123 may be provided.
- This can, for example, by appropriate storage means 122; 123, z. B. as on one of the frame walls 59; 93 arranged rolling elements 122, for example, rollers 122, and on the other of the frame walls 93; 59 arranged guides 123 and treads 123 may be formed.
- the storage device 53 together with
- Drive device 74 carrying frame wall 59 on the screen printing cylinder 04 medium or directly overlapping frame wall 93 along a circular arc, in particular concentrically to the Siebdruckzylinderachse extending, Stellweges be movably mounted (see, for example, schematically in Fig. 15).
- the bearing device 53 including the drive device 74 bearing frame wall 59 may be mounted on the screen printing cylinder 04 medium or directly overlapping frame wall 93 pivotally.
- the storage device 53 together with
- arcuate versions of the travel or the associated guides can also be approximately realized by his against the réelletangente the undisturbed circle at the place of first touch inclined rectilinear travel ranges or guides.
- a drive device 124 is preferably provided, through which the squeegee 44 or the squeegee holder 43 relative to the round screen 43, in particular, the bearing device 53 including the drive device 74 bearing
- Frame wall 59 relative to the screen printing cylinder 04 medium or directly overlapping frame wall 93, is movable.
- the contact line varying drive means 124 may in principle be designed as a manually operated drive or alternatively as remotely operated by a drive means 126 to be set drive. In both cases, the drive can be done via a - for example, self-locking - worm gear.
- Varying the Bermmlinienlage is alone, but also in particular together with one or more of the above solution ideas, such.
- the embodiments of the doctor angle adjustment and / or for rectilinear and / or independent on and off advantage.
- Screen printing device 86 is the screen printing cylinder 04 rotationally by a from
- drive motor 1 16 executed drive means 1 16, for example, an electric motor 1 16, in particular an electric servo drive 1 16, ground.
- the drive takes place in this case for example via a continuous or connected via an axial offset compensating coupling connected shaft 1 17, z. B. toothed shaft 1 17, on which preferably in the region of both Siebdruckzylinderstirnrise a preferably designed as a gear drive wheel 1 18 rotatably and axially movably received. From this medium or possibly directly via another, preferably designed as a gear 1 19 carried intermediate wheel on a rotatably connected to the rotatable part of the bearing device 1 12, preferably in the manner of a gear 121 or gear rim 121 running drive wheel 121 driven off.
- Printing stage 09; 09 ' can be processing levels of an online finishing of upstream, for example, by one or more operating according to an offset printing stages 07 or in an advantageous in terms of effectiveness execution as processing stages of a multi-stage processing, in particular finishing machine 01 for offline processing or -refining be formed by previously printed in the offset printing substrate sheet B.
- a printing stage 09 operating according to a high-pressure method instead of or in addition to a printing stage 09 operating according to flexographic printing, a printing stage 09 operating according to a tampon direct printing method and / or a direct printing stamp method can be provided in the printing material path.
- 09 can be used as another, according to a direct digital method printing stage 09 instead of or in addition to one after the inkjet or
- Inkjet method operating printing stage a working according to a thermal transfer direct printing process printing stage 09 'be provided.
- the said direct printing method has in common that they allow the use of specific printing fluid and / or by the type of application, a particularly effective and / or individual processing, in particular finishing, of already printed in sheet form in offset printing substrate B.
- the achievable Effects relate to, for example, special gloss effects, particularly high resistance and / or a feel different from offset printing. This makes possible a particularly high-quality and effective design of the product surface.
- the screen printing stage 02 Due to the independent of the impression cylinder 06 rotary drive and the mechanically independent doctor drive the screen printing stage 02 can be actively co-operated independently of the sheet transport, are in standby mode or be completely disabled.
- the counter-pressure cylinder 06 of the screen printing stage 02 can in a preferred embodiment by a sheet transport causing, from the drive of the screen printing cylinder 04 mechanically independent drive means 127, z.
- a drive motor 127 (see, for example, schematically indicated in Fig. 1 and Fig. 2).
- Gear train together with at least one adjacent in the printing material cylinder 33, in particular a transfer drum 33.
- Impression cylinder 06 and transfer drum 33 for example via intermeshing gears 128; 129 (see eg Fig. 13 and Fig. 9).
- the drive of the impression cylinder 06 of the screen printing stage 02 is not only carried out together with at least one transfer drum 33, but together with this and with the substrate B by the pressure point with the
- Processing tool 29 promotional cylinder 24, z. B. Transfer cylinder 24 of the other provided in the printing material, the further processing or processing serving pressure 09; 09 '. This is z. B. at least from the gear 128 of the
- further printing stage 09 can also be the imaging cylinder 29, z. B. forme cylinder 29, be driven by a further drive motor mechanically independent of the transfer cylinder 24 of the respective printing stage 09 or by the transfer cylinder 24 driving drive train. In this case, a screen printing is then possible regardless of the activation of the further printing stage 09.
- z. As inkjet or inkjet printing, its independence is given in any case.
- the substrate surface cleaning conditioner 08 provided z. B. is designed as a cleaning stage 08 and / or comprises a suction agent and / or a blowing agent and / or a mechanical stripping.
- the conditioning stage 08 differs in particular from the printing stages 02; 09; 09 'in that it does not carry pressurized fluid and / or without a pressurized fluid reservoir or pressurized fluid supply device. LIST OF REFERENCE NUMBERS
- Substrate delivery device delivery, product delivery
- processing stage conditioning stage, radiation dryer, dryer, UV dryer
- Machining tool radiation source, IR radiation source conveyor system, chain conveyor system
- Doctor carrier traverse drive means, electric motor, servomotor
- Lever drive device drive, motor spindle drive
- Drive unit drive, spindle drive, ball screw Phase position sensor, master axis encoder, sensors, master axis
- Frame frame part, printing unit frame
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
- Printing Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015208918.5A DE102015208918A1 (de) | 2015-05-13 | 2015-05-13 | Rakeleinrichtung, Druckwerk sowie Verfahren zum Betreiben einer Rakeleinrichtung |
| PCT/EP2016/058967 WO2016180616A1 (de) | 2015-05-13 | 2016-04-22 | Druckwerk sowie verfahren zum betreiben einer rakeleinrichtung in einem druckwerk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3294555A1 true EP3294555A1 (de) | 2018-03-21 |
| EP3294555B1 EP3294555B1 (de) | 2019-09-25 |
Family
ID=55802386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16717654.4A Active EP3294555B1 (de) | 2015-05-13 | 2016-04-22 | Druckwerk sowie verfahren zum betreiben einer rakeleinrichtung in einem druckwerk |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3294555B1 (de) |
| CN (1) | CN108025547B (de) |
| DE (1) | DE102015208918A1 (de) |
| WO (1) | WO2016180616A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605918B (zh) * | 2019-01-30 | 2024-03-29 | 温州欧宏机械有限公司 | 一种丝印机的循环烘干装置 |
| DE102019130862B3 (de) | 2019-11-15 | 2021-02-18 | Koenig & Bauer Ag | Bogenbearbeitungsmaschine und Verfahren zum Antreiben zumindest eines Werkzeugs einer Bogenbearbeitungsmaschine |
| DE102019131800B3 (de) | 2019-11-25 | 2021-04-08 | Koenig & Bauer Ag | Stanzmaschine |
| US11969989B2 (en) | 2020-01-30 | 2024-04-30 | Bobst Bielefeld Gmbh | Printing machine and method of operating a printing machine |
| CN112484674B (zh) * | 2020-12-04 | 2022-06-21 | 孝感慧硕电子科技有限公司 | 一种检测电路板的锡膏印刷刮刀平整度的精密设备 |
| JP7847767B2 (ja) * | 2022-03-04 | 2026-04-20 | 日本電子精機株式会社 | 印刷装置と印刷方法 |
| CN114379206B (zh) * | 2022-03-04 | 2025-05-02 | 新乡李印机械科技有限公司 | 旋转丝网印刷机刮刀装置 |
| CN115816992B (zh) * | 2023-02-24 | 2023-04-28 | 新乡市新机迪元科技有限公司 | 一种高速圆丝网印刷机 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2125633A5 (de) * | 1971-02-15 | 1972-09-29 | Mulhouse Alsacien Const | |
| DE7502041U (de) * | 1975-01-24 | 1975-05-22 | Rehmus K | Vorrichtung zum schwenken eines bauteiles um eine achse |
| EP0071014A1 (de) * | 1981-07-02 | 1983-02-09 | Fritz Buser Ag Maschinenfabrik | Verfahren und Farbübertragungselement zum Uebertragen von Druckfarbe auf ein Substrat im Siebdruck |
| AU696709B2 (en) | 1995-01-24 | 1998-09-17 | Kba-Notasys Sa | Rotary screen printing machine for sheet printing |
| US5630363A (en) | 1995-08-14 | 1997-05-20 | Williamson Printing Corporation | Combined lithographic/flexographic printing apparatus and process |
| DE29517099U1 (de) * | 1995-10-17 | 1997-02-27 | Zimmer, Johannes, Klagenfurt | Auftragungsvorrichtung |
| DE69702504T2 (de) * | 1996-03-21 | 2001-04-19 | De La Rue Giori S.A., Lausanne | Siebdruckmaschine |
| CN2327529Y (zh) * | 1996-10-04 | 1999-07-07 | 山东印染机械股份有限公司 | 一种自动丝网印花机刮浆装置 |
| DE19949099C2 (de) | 1999-10-12 | 2003-08-14 | Sonko Konstruktions Und Sonder | Rotationssiebdruckmaschine |
| ATE250500T1 (de) * | 2000-01-25 | 2003-10-15 | Koenig & Bauer Ag | Druckeinheit |
| DE10101664A1 (de) * | 2001-01-16 | 2003-08-07 | Josef Hefele | Verfahren und Vorrichtungen zur Herstellung flexibler Flächengebilde mit rasterförmiger Schmelzkleberbeschichtung |
| JP2006305788A (ja) | 2005-04-27 | 2006-11-09 | Komori Corp | 液体供給装置 |
| JP4818642B2 (ja) | 2005-05-20 | 2011-11-16 | 株式会社小森コーポレーション | 円筒体支持装置 |
| JP2007210218A (ja) | 2006-02-10 | 2007-08-23 | Komori Corp | 液体供給装置 |
| ITMO20060127A1 (it) | 2006-04-19 | 2007-10-20 | Pont Massimiliano Dal | Apparato di stampa |
| JP2013169741A (ja) * | 2012-02-22 | 2013-09-02 | Sony Corp | スクリーン印刷装置、スキージ機構、印刷物の製造方法及び基板の製造方法 |
| JP6168692B2 (ja) * | 2013-08-06 | 2017-07-26 | 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 |
| 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 |
-
2015
- 2015-05-13 DE DE102015208918.5A patent/DE102015208918A1/de not_active Withdrawn
-
2016
- 2016-04-22 EP EP16717654.4A patent/EP3294555B1/de active Active
- 2016-04-22 WO PCT/EP2016/058967 patent/WO2016180616A1/de not_active Ceased
- 2016-04-22 CN CN201680015488.2A patent/CN108025547B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3294555B1 (de) | 2019-09-25 |
| CN108025547B (zh) | 2020-01-14 |
| CN108025547A (zh) | 2018-05-11 |
| DE102015208918A1 (de) | 2016-11-17 |
| WO2016180616A1 (de) | 2016-11-17 |
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