EP3941747A1 - Verfahren zum bestimmen einer position des gegenseitigen kontaktes zwischen einer druckwalze und mindestens einer gegenwalze einer flexodruckmaschine - Google Patents
Verfahren zum bestimmen einer position des gegenseitigen kontaktes zwischen einer druckwalze und mindestens einer gegenwalze einer flexodruckmaschineInfo
- Publication number
- EP3941747A1 EP3941747A1 EP20708145.6A EP20708145A EP3941747A1 EP 3941747 A1 EP3941747 A1 EP 3941747A1 EP 20708145 A EP20708145 A EP 20708145A EP 3941747 A1 EP3941747 A1 EP 3941747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- counter
- pressure roller
- printing
- electric motor
- 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
- B41F5/00—Rotary letterpress machines
- B41F5/04—Rotary letterpress machines for printing on webs
- B41F5/16—Rotary letterpress machines for printing on webs for multicolour printing
- B41F5/18—Rotary letterpress machines for printing on webs for multicolour printing using one impression cylinder co-operating with several forme cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F5/00—Rotary letterpress machines
- B41F5/24—Rotary letterpress machines for flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/004—Electric or hydraulic features of drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/004—Electric or hydraulic features of drives
- B41F13/0045—Electric driving devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/26—Arrangement of cylinder bearings
- B41F13/30—Bearings mounted on sliding supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/34—Cylinder lifting or adjusting devices
- B41F13/38—Cylinder lifting or adjusting devices electrically or magnetically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/02—Arrangements of indicating devices, e.g. counters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/04—Tripping devices or stop-motions
- B41F33/08—Tripping devices or stop-motions for starting or stopping operation of cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/26—Arrangement of cylinder bearings
Definitions
- the invention relates to a method, implemented or at least executable in a flexographic printing machine, for determining a position of mutual contact between a printing roller and at least one counter roller according to the preamble of claim 1.
- EP 1 018 426 A1 discloses a method for adjusting two cylinders of a printing machine against one another, one of the two cylinders being allowed to rotate while the two cylinders are moved radially towards one another and the torque acting on one of the two cylinders is monitored and wherein, if the monitored torque exceeds a predetermined threshold value, the radial position reached at that moment of the two cylinders relative to one another is taken as the zero position for the adjustment.
- WO 2015/001126 A1 discloses a method for the mutual adjustment of two cylinders in a printing machine, the cylinders being driven with at least one drive at different peripheral speeds, at least the first cylinder in the direction of the second cylinder by means of at least one adjustment device is moved, the contact position being determined, the values of at least one measured variable of at least one of the two cylinders being detected by a measuring or detection device, the values of the measured variable being received by means of a control device and the contacting device being controlled, the contact position being determined, whereby the first change in the value of the
- Measured variable of the at least one cylinder compared to an initial value of this measured variable has resulted, with the value of the angle of rotation being recorded at which there is a deviation of the value of the measured variable from the initial value.
- a flexographic printing machine has a central drum on which in a
- Printing process a substrate in the form of a sheet or a flexible film
- Each printing unit has a printing roller and an inking roller, the printing roller carrying at least one cliché on its outer surface.
- the inking roller which is usually designed as an anilox roller, is also called an anilox roller.
- a first pair of electric motors move the platen of each printing unit towards or away from the central drum
- a second pair of electric motors move the inking roller of each printing unit toward or away from the respective printing roller.
- the respective axis of rotation of each printing roller or anilox roller is mounted on a guide orthogonal to the respective axis of rotation, with a motor being arranged at one end of each guide, which causes a linear movement of the respective printing roller or anilox roller.
- a respective detection device for detecting the angular position of the respective motor shaft, i. H. an encoder is assigned, the respective angular position corresponding to a linear position of the printing and / or inking roller.
- optimum print is characterized by the fact that it is sufficient to produce a print image of good print quality on the substrate, but is not excessively large, as too high a pressure would damage the clichés used and / or cause the printing areas to be deformed, what then to double edges and excessively applied paint.
- a poorly set print thus leads to poor ink transfer between the cliché and the printing material and / or between the inking roller and the cliché, which in each case has a negative effect on the print quality.
- the invention is therefore based on the object of creating a method for determining a position of mutual contact between a pressure roller and at least one counter roller.
- a position of mutual contact between a pressure roller and at least one Counter roller is determined automatically, quickly and repeatably, preferably also depending on the shape or the relief of the cliché, the position of mutual contact between a printing roller or a cliché carried by it and a central drum and / or the position of the mutual There is contact between the printing roller or the cliché carried by it and an inking roller.
- the solution found contributes to reducing the waste during the setting process of the printing units of the flexographic printing machine and / or for this setting process
- FIG. 1 shows a schematic plan view of a section from a flexographic printing machine
- FIG. 2 shows a side view of the detail from FIG. 1;
- FIG. 3 shows a flow chart relating to the method for determining a position of the mutual contact between a printing roller and a central drum in a flexographic printing machine
- FIG. 4 shows a flow diagram relating to the method for determining a position of mutual contact between a printing roller and an inking roller in a flexographic printing machine.
- a flexographic printing machine of the generic type is designated as a whole with the reference number 10.
- Such a flexographic printing machine 10 has a pair of frame walls 20 arranged parallel to one another, between which a central drum 30 is rotatably mounted.
- a particularly in the form of a flexible film F formed printing material is guided at least around this central drum 30 or is carried by the central drum 30 rotating during the printing process.
- At least one pressure roller 40 is positioned or at least adjustable against this central drum 30 in order to apply a print image to the printing material.
- the pressure roller 40 is between two counter rollers 30; 50 arranged, of which one counter roller 30 is designed as the central drum 30 and the other counter roller 50 is designed as an inking roller 50.
- a pressure roller 40 cooperating with an inking roller 50 forms a printing unit in the flexographic printing machine 10.
- the inking roller 50 is z. B. designed as an anilox roller and is also referred to as an anilox roller.
- FIG. 1 shows, by way of example, the aforementioned arrangement in a schematic plan view of a section from a flexographic printing machine 10. Furthermore, FIG. 1 shows that both the printing roller 40 and the relevant counter roller 30; 50 each have a first electric motor 31; 41; 51 and by means of the relevant first electric motor 31; 41; 51 can each be moved in rotation. Each of these first electric motors 31; 41; 51 each has a first encoder 32; 42; 52 on. At least the printing roller 40 and the inking roller 50 each have a second electric motor 43; 53, with the
- Pressure roller 40 and the inking roller 50 by means of the relevant second electric motor 43; 53 each in the direction D of a mutual approach between the pressure roller 40 and the relevant counter roller 30; 50 can be moved translationally.
- Each of these second electric motors 43; 53 each has a second encoder 44; 54 on.
- FIG. 2 shows by way of example in a side view of the detail from FIG. 1, several, z. B. eight printing units can be arranged, each of these printing units is preferably designed in the manner described above in connection with FIG.
- the individual printing units can be operated independently of one another, that is to say can each be brought into operative connection with the central drum 30.
- this flexographic printing machine 10 is a method for determining a position of mutual contact between a printing roller 40 and
- Pressure roller 40 this parameter being a result of the mutual contact between the relevant counter roller 30; 50 and the platen 40 indicates drag rotation caused;
- step (f) repeating steps (a) to (d) and determining the corresponding position of mutual contact between the pressure roller 40 and the relevant counter roller 30; 50 for the angular position of the pressure roller 40 changed in step (e);
- Calculating an average position of mutual contact between the pressure roller 40 and the counter roller 30 concerned; 50 as a function of each position of mutual contact between the pressure roller 40 and the relevant counter roller 30, which position is determined for a certain angular position of the pressure roller 40; 50 has the advantage that by setting the position of the mutual contact between the pressure roller 40 and the relevant counter roller 30; 50, an excessively high contact pressure from the cliché arranged on the printing roller 40 on the printing material and thereby damage to the cliché used is avoided. Rather, the setting of an average position of the mutual contact between the pressure roller 40 and the relevant counter roller 30; 50 to a good print quality, since an undesired deformation of the printing areas largely does not occur and the creation of double edges and / or an excessive application of ink on the printing material is avoided.
- step (d) the determination made in step (d) of the position of the mutual contact between the pressure roller 40 and the relevant counter roller 30; 50 following steps:
- step (d3) determining the position of mutual contact between the pressure roller 40 and the counter roller 30 concerned; 50 on the basis of the distance measured in accordance with step (d2), if the value of the detected parameter lies in the previously defined value range for this parameter.
- the parameter to be determined in accordance with step (c) is preferably a
- Print roller 40 selected.
- the calculated position of the mutual contact between the pressure roller 40 and the counter roller 30 concerned; 50 is advantageously used in one of the
- Flexographic printing machine 10 used printing process executed.
- a preferably electronic control unit 100 is also provided and configured (FIG. 1) in such a way that this control unit 100 determines the specific angular positions of the pressure roller 40 at the respective position of mutual contact between the pressure roller 40 and the relevant counter roller 30; 50 and executes a printing process with these defined angular positions of the pressure roller 40.
- this control unit 100 determines the specific angular positions of the pressure roller 40 at the respective position of mutual contact between the pressure roller 40 and the relevant counter roller 30; 50 and executes a printing process with these defined angular positions of the pressure roller 40.
- Control unit 100 are preferably digital data, in particular for certain
- Angular positions of the pressure roller 40 stored, these angular positions at the respective position of mutual contact between the pressure roller 40 and the relevant counter roll 30; 50 correspond to significant positions in the relief of the cliché arranged on the printing roller 40. Because the relief of the cliché arranged on the printing roller 40 corresponds to that to be produced
- the print image has projections or depressions at certain positions that are considered significant.
- Counter roller 30 is designed as a central drum 30 and the other counter roller 50 is designed as an inking roller 50, both the pressure roller 40 and the relevant counter roller 30; 50 each have a first electric motor 31; 41; 51 and by means of the relevant first electric motor 31; 41; 51 can each be moved in rotation, each of these first electric motors 31; 41; 51 each have a first encoder 32; 42; 52, wherein at least the printing roller 40 and the inking roller 50 each have a second electric motor 43; 53 and by means of the relevant second
- Electric motor 43; 53 each in the direction D of a mutual approach between the pressure roller 40 and the relevant counter roller 30; 50 can be moved in translation, each of these second electric motors 43; 53 each have a second encoder 44; 54, wherein this flexographic printing machine 10 is designed to carry out the steps of the method described above.
- the flexographic printing machine 10 is used to transport the flexible film F driven at a minimum drive speed.
- the printing roller 40 is driven in slow rotation by its first electric motor 41, so that the printing roller 40 is arranged according to a (first) predetermined angular (absolute) position.
- the printing roller 40 is stopped, ie it is stopped in this first angular position by the first electric motor 41, which remains in the "torque cut-off" mode, ie in the neutral position.
- the predetermined angular position of the pressure roller 40 can be chosen arbitrarily, for. B. by dividing the outer surface of the printing roller 40 (ie the cliché placed thereon) into sectors (z. B. Equivalent), the number of sectors (which are subject to a predetermined angle of rotation) is equal to the number of angular positions that one for each Want to scan print roller 40.
- the predetermined angular position of the pressure roller 40 can be selected weighted.
- each angular position and / or its first angular position is predefined on the basis of the conformity of the pressure roller 40, in particular on the
- a print template is assigned to each cliché, i. H. a pdf file or a jpeg file in which the angular positions of the relief are precisely defined in a certain reference system, which defines the print image that is to be transferred to the flexible film F when printing.
- Each predetermined angular position of the printing roller 40 can be selected from the angular positions in which at least one relief or a group of reliefs is present in the cliché arranged on the printing roller 40.
- each predetermined angular position is selected such that it is the above-mentioned angular position (ie the selected reliefs) to the central drum 30 or on a plane containing the D direction, ie, the axes of rotation of the central drum 30 and the platen 40, aligns.
- each predetermined angular position is stored in the aforementioned memory unit.
- the central drum 30 is now set in rotation with its first electric motor 31 (block S1), for. B. with a predetermined (fixed) speed.
- the method consists in driving one of the two second electric motors 43 individually in order to move the respective axial end of the pressure roller 40 in the direction of the central drum 30.
- the two second electric motors 43 are driven simultaneously in order to move both axial ends of the printing roller 40 forward to the central drum 30.
- the method therefore provides, with the aid of the first encoder 42, to monitor the possible rotation caused by the contact between the rotating central drum 30 and the printing roller 40 (ie the cliché arranged on it) of the printing roller 40 (and thus the rotor of the first electric motor 41, in neutral position).
- the method provides, with the aid of the first encoder 42 of the first electric motor 41 of the printing roller 40 in idle mode (in the "torque deactivated” mode), to recognize at least one non-zero value of a parameter indicating a drag rotation (S3 block), the Towing turn through the achieved mutual contact between the rotating central drum 30 and the
- Pressure roller 40 is induced during the movement of the pressure roller 40 to the central drum 30 in the D direction.
- the first encoder 42 of the first electric motor 41 of the printing roller 40 detects the angular momentum that is given from the central drum 30 to the printing roller 40, for example by detecting a value of the parameter that is derived from a
- Rotational speed of the platen 40 i.e., a variation in the rotational speed of the platen 40 from a zero to a non-zero value
- Rotational speed of the platen 40 i.e., a variation in the rotational speed of the platen 40 from a zero to a non-zero value
- Angular position of the pressure roller 40 (i.e. a variation of the angular position of the pressure roller with respect to the predetermined - previous - angular position in which the pressure roller 40 was positioned) was chosen.
- Torque cut-off mode detects a value of the rotational speed of the printing roller 40 which is not zero and / or a value of the angular position of the printing roller 40 which deviates from the predetermined (first) angular position in which the printing roller 40 was positioned, then that is
- the electronic control unit 100 is configured to determine that the platen 40 has received drive rotation induced by the mutual contact between the platen 40 and the central drum 30.
- the method consists in particular in using the value of the determined parameter to compare a reference area of the same (block S4), e.g. B. with a minimum value (z. B. corresponding to a value close to the angular velocity zero or the predetermined angular position in which the pressure roller 40 was positioned) and a maximum permissible value.
- a reference area of the same e.g. B. with a minimum value (z. B. corresponding to a value close to the angular velocity zero or the predetermined angular position in which the pressure roller 40 was positioned) and a maximum permissible value.
- the detection can be assumed to be acceptable.
- the method is continued by stopping (block S5), e.g. B. by immediately stopping the movement of the pressure roller 40 approaching in direction D of the central drum 30, i.e. H. the second, previously driven electric motor 41 is stopped immediately.
- the pressure roller 40 is stopped in its forward movement towards the central drum 30 in the D-direction in a (current) mutual (first) contact position with the central drum 30 itself, i.e. H. where the reliefs of the cliché applied to this printing roller 40 touch the central drum 30 with an optimal contact pressure which is defined by the contact pressure which is such that the rotational movement (by friction / resistance) between the central drum 30 and the Pressure roller 40 is transferred.
- the method consists in using the second encoder 44 of the second electric motor 43 of the pressure roller 40 the linear (absolute) position of the pressure roller 40 or the respective axial end of the pressure roller 40 in the D-direction and / or the linear path that the pressure roller 40 (or the respective axial end of the pressure roller 40) in the D-direction from the starting position (and thus from the zero position) to the aforementioned mutual contact position to measure (block S6).
- Printing roller 40 and the central drum 30 of the flexographic printing machine 10 identified or determined (block S7) and stored as such in a memory of the control unit 100.
- the above method can be repeated a few or n times, whereby it must be ensured that the pressure roller 40 is to be rotated according to further n-1 (and different) predetermined angular positions.
- the method makes it possible to obtain a number n of mutual contact positions for the respective pressure roller 40, which are determined as described above.
- the above method - as mentioned above - can be carried out independently of one another for each axial end of the pressure roller 40.
- the method makes it possible to obtain a number of 2n mutual contact positions which are determined for each pressure roller 40 as described above. At this point the method is used to establish an average mutual contact position (with the central drum 30) for each platen 40
- the average mutual contact position can be determined by any of the following
- Middle filter the n samples detected at each axial end of the platen by sorting the samples in ascending order and selecting the center of the ordered series.
- the inking roller 50 is brought into its starting position with the second electric motor 53 (slightly detached from the respective pressure roller 40).
- the pressure roller 40 is slowly driven in rotation by the first electric motor 41 of the same, so that it is arranged according to a (first) predetermined angular (absolute) position.
- the platen 40 When the platen 40 is positioned in the first predetermined selected angular position, the platen 40 is stopped, i.e. stopped. H. she will be in this first
- the predetermined angular position of the pressure roller 40 can, as described above, be chosen arbitrarily or weighted.
- each predetermined angular position is such that the angular position (i.e., the reliefs selected) is aligned with inking roller 50 or on a plane containing the D direction (i.e., the axes of rotation of inking roller 50 and platen 40).
- Control unit 100 stored.
- the inking roller 50 is now set in rotation with its first electric motor 51 (block P1), e.g. B. with a predetermined (fixed) rotational speed.
- the inking roller 50 rotates and the printing roller 40 is left stationary, ie not rotating, the inking roller 50 is moved in the D direction towards the corresponding printing roller 40 (block P2).
- the method means that one of the two second electric motors 53 is driven one after the other in order to move the respective axial end of the inking roller 50 forwards to the printing roller 40.
- the two second electric motors 53 are driven simultaneously in order to move both axial ends of the inking roller 50 forward towards the printing roller 40 at the same time.
- the method thus consists in using the first encoder 42 to monitor every (uncontrolled) rotation caused by the contact between the rotating inking roller 50 and the printing roller 40 (i.e. the cliché placed on it) of the printing roller 40 (and thus to the rotor of the first electric motor 41, in neutral position) is imposed.
- the method provides for using the first encoder 42 of the first electric motor 41 of the printing roller 40, which remains in idle mode (in the "torque deactivated” mode), to detect at least one value of a parameter of a drag rotation other than zero (block P3), wherein the drag rotation is induced by the mutual contact achieved between the rotating ink roller 50 and the pressure roller 40 during the movement of the ink roller 50 in the direction of the pressure roller 40 in the D-direction.
- the pressure roller 40 is stationary (i.e. not rotating), i.e. when it is not rotating. H. in the case of one of the reliefs on the cliché arranged on it, when it moves forward to the printing roller 40 in the D direction, it touches the rotating inking roller 50 and from there - by friction - in rotation (in the opposite direction)
- the first encoder 42 of the first electric motor 41 of the printing roller 40 detects the angular momentum exerted by the inking roller 50 on the printing roller 40, e.g. B. by capturing a value of the parameter which varies between a rotational speed of the printing drum 40 (ie a change in the rotational speed of the printing drum 40 from a zero to a non-zero value), an angular position of the printing drum 40 (ie a
- the electronic control unit 100 is configured to determine that the platen 40 has received drive rotation induced by the mutual contact between the platen 40 and the inking roller 50.
- the method includes, in particular, the comparison (block P4) of the value of the determined parameter with a reference range thereof, e.g. B. with a
- Minimum value for example corresponding to a value close to the angular velocity zero or the predetermined angular position in which the pressure roller 40 was positioned
- a maximum permissible value for example identical to or different from those described above
- the detection can be assumed to be acceptable. Otherwise the detection is assumed to be unacceptable and the steps of the method described above are repeated.
- the process is continued by stopping (block P5), e.g. B. by immediately stopping the movement of the inking roller 50 approaching the platen 40 along the D direction, that is, the second previously driven electric motor 53 is stopped immediately.
- the inking roller 50 is stopped on its way to the printing roller 40 in the D direction in a (current) mutual (first) contact position with the printing roller 40 itself, i. H. where the reliefs of the cliché applied to this printing roller 40 touch the inking roller 50 with an optimal contact pressure, which is defined by the contact pressure in such a way that the rotational movement (through friction / resistance) is transmitted between the inking roller 50 and the printing roller 40.
- the method consists in determining the linear (absolute) position of the inking roller 50 with the aid of the second encoder 54 of the second electric motor 53 of the inking roller 50 to measure (block P6), or the respective axial end of the inking roller 50 in the D direction or the linear distance covered by the inking roller 50 (ie the respective axial end of the inking roller 50) in the D direction from the starting position (and thus the zero position) up to the mutual contact position mentioned above.
- Printing roller 40 and the inking roller 50 of the flexographic printing machine 10 are identified or determined (block P7) and are stored as such in the memory of the control unit 100. At this point, the above method can be repeated n number of times, taking care to rotate the platen 40 according to the respective n-1 (and various) predetermined angular positions.
- the method allows a number n of for each printing unit
- the above method - as mentioned above - can be carried out independently of one another for each axial end of the inking roller 50.
- the method allows a number of 2n mutual contact positions to be obtained for each printing unit, which are determined as described above.
- the method can then for each printing unit an average mutual contact position (between printing roller 40 and inking roller 50) in
- the average mutual contact position can be found using one of the following formulas:
- This average mutual contact position is then used as a first approximation (S9 block) in order to carry out a printing process with the flexographic printing machine 10
- the printing process consists in particular in the flexographic printing machine 10 so
- one or more can be used in front of the flexographic printing machine 10
- a dryer can be arranged behind the flexographic printing machine 10, through which a heat flow, e.g. B. hot air, is introduced into the printed flexible sheet F to dry the print, and a winder in which the printed and dried flexible sheet F is wound around a cylinder to be rewound.
- a heat flow e.g. B. hot air
- the flexographic printing machine 10 can also be equipped with drive units that support the drive of the flexible film F, and with web guide units that keep the web centered in relation to the D direction, as well as with optical systems (such as, for example, control cameras) for the automatic control of the pressure achieved on the flexible film F.
- drive units that support the drive of the flexible film F
- web guide units that keep the web centered in relation to the D direction
- optical systems such as, for example, control cameras
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102019000003965A IT201900003965A1 (it) | 2019-03-19 | 2019-03-19 | Metodo per la determinazione della posizione di mutuo contatto tra un rullo di stampa e almeno un contro-rullo scelto tra un tamburo centrale e un rullo inchiostratore in macchine di stampa flessografica e la relativa macchina di stampa flessografica |
| DE102019107012.0A DE102019107012A1 (de) | 2019-03-19 | 2019-03-19 | Verfahren zur Bestimmung der Lage gegenseitigen Kontaktes zwischen einer Druckwalze und mindestens einer unter einer mittleren Trommel und einer Farbwalze in Flexo-Druckmaschinen ausgewählten Gegenwalze, und die entsprechende Flexo-Druckmaschine |
| PCT/EP2020/056513 WO2020187665A1 (de) | 2019-03-19 | 2020-03-11 | Verfahren zum bestimmen einer position des gegenseitigen kontaktes zwischen einer druckwalze und mindestens einer gegenwalze einer flexodruckmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3941747A1 true EP3941747A1 (de) | 2022-01-26 |
| EP3941747B1 EP3941747B1 (de) | 2023-04-05 |
Family
ID=69726598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20708145.6A Active EP3941747B1 (de) | 2019-03-19 | 2020-03-11 | Verfahren zum bestimmen einer position des gegenseitigen kontaktes zwischen einer druckwalze und mindestens einer gegenwalze einer flexodruckmaschine. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11298932B2 (de) |
| EP (1) | EP3941747B1 (de) |
| WO (1) | WO2020187665A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19900258A1 (de) | 1999-01-07 | 2000-07-13 | Fischer & Krecke Gmbh & Co | Verfahren zum Anstellen zweier Zylinder einer Druckmaschine gegeneinander |
| DE102009025053A1 (de) | 2009-06-10 | 2010-12-16 | Windmöller & Hölscher Kg | Vorrichtung und Verfahren zum gegenseitigen Anstellen zumindest zweier Zylinder einer Druckmaschine |
| IT1402966B1 (it) | 2010-12-06 | 2013-09-27 | Flexotecnica S P A | Metodo per il settaggio del posizionamento di corpi di stampa in macchine per la stampa flessografica |
| ES2395184B1 (es) * | 2011-08-12 | 2013-11-28 | Comexi Group Industries, Sau | Método de ajuste de presiones en una impresora flexográfica y máquina flexográfica para su implementación. |
| DE102012103853B4 (de) * | 2012-05-02 | 2022-10-13 | Windmöller & Hölscher Kg | Verfahren für die parallele Ausrichtung von wenigstens zwei Zylindern zueinander sowie Kalibriervorrichtung |
| ITVR20120085A1 (it) * | 2012-05-07 | 2013-11-08 | Uteco Converting Spa | Procedimento e apparecchiatura per l'individuazione della posizione di tangenza tra la superficie laterale di un cilindro di stampa ed un altro elemento di stampa in macchine da stampa rotative |
| ES2634519T3 (es) | 2013-07-05 | 2017-09-28 | Windmöller & Hölscher Kg | Procedimiento y dispositivo para el ajuste mutuo de dos cilindros en una máquina de impresión |
-
2020
- 2020-03-11 WO PCT/EP2020/056513 patent/WO2020187665A1/de not_active Ceased
- 2020-03-11 EP EP20708145.6A patent/EP3941747B1/de active Active
- 2020-03-11 US US17/435,051 patent/US11298932B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20220040966A1 (en) | 2022-02-10 |
| WO2020187665A1 (de) | 2020-09-24 |
| US11298932B2 (en) | 2022-04-12 |
| EP3941747B1 (de) | 2023-04-05 |
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