EP4031376A1 - Bogendruckmaschine und ein verfahren zum betreiben einer bogendruckmaschine - Google Patents
Bogendruckmaschine und ein verfahren zum betreiben einer bogendruckmaschineInfo
- Publication number
- EP4031376A1 EP4031376A1 EP20817246.0A EP20817246A EP4031376A1 EP 4031376 A1 EP4031376 A1 EP 4031376A1 EP 20817246 A EP20817246 A EP 20817246A EP 4031376 A1 EP4031376 A1 EP 4031376A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- sheet
- gear train
- gear
- printing
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/02—Rotary lithographic machines for offset printing
- B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
-
- 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
- B41F13/008—Mechanical features of drives, e.g. gears, clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/04—Grippers
- B41F21/05—In-feed grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/10—Combinations of transfer drums and grippers
-
- 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
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
- B41P2213/40—Auxiliary devices or processes associated with the drives
- B41P2213/42—Vibration-dampers for machine parts
Definitions
- Sheet-fed printing machine and a method for operating a sheet-fed printing machine
- the invention relates to a sheet-fed printing machine according to the preamble of claim 1 and a method for operating a sheet-fed printing machine.
- An oscillating gripper is often used in the area of the system in sheet-fed printing machines.
- the vibrating gripper executes an alternating pivoting movement, gripping sheets at a first reversal point and transferring them to an acceptance drum in its forward movement in order to then brake and reverse again to swing back to the first reversal point.
- the vibrating gripper is usually driven by a mechanical gear, which contains, for example, cam disks and converts a rotational movement of the acceptance drum into the pivoting movement.
- the acceptance drum itself is connected to a main drive motor via a gear train. Because of the reversal of movement of the vibrating gripper, negative effects on the gear train and the printing units driven by it can occur, for example through vibrations and / or flank changes on the gear wheels in the gear train.
- a sheet-fed printing machine is known from WO 2016/071870 A1, by means of which sheet-shaped substrate guided on a transport path can be printed one after the other on both sides in multicolor printing at two printing points spaced apart in the transport path.
- the multi-color printing takes place here by a respective collective printing unit in such a way that the partial print images of several forme cylinders are collected on a collecting cylinder before they are jointly delivered to the substrate at the printing point.
- the invention is based on the object of creating a sheet-fed printing machine and a method for operating a sheet-fed printing machine.
- a print quality can be improved in particular even at high printing speeds and / or changing printing speeds, such as when the printing press is started up, for example.
- a flank change in the gear train is preferably prevented even at high printing speeds by introducing an angular position-dependent torque component to compensate for the inertia of the oscillating gripper.
- a torque component that is only dependent on the printing speed is preferably used to achieve a tension state in the gear train that is as uniform as possible over all printing speeds. Without this torque component, on the other hand, there is a tension in the gear train that is dependent on the printing speed and thus a register behavior that is dependent on the printing speed.
- a sheet-fed printing machine preferably has at least one sheet feeder and has at least one oscillating gripper, in particular pivotably mounted about a swivel axis, and at least one receiving drum arranged downstream of the oscillating gripper, with at least one particularly mechanical swivel gear being arranged which is used to couple a rotational movement of a shaft of the receiving drum and an alternating and is formed by two end positions limited pivoting movement of the swing gripper.
- a gearwheel which is non-rotatably connected to the shaft of the acceptance drum and is referred to as an acceptance drum wheel is arranged connected via a gear train containing this acceptance drum wheel to a main drive motor of the sheet-fed printing machine, in particular in a torque-transmitting manner.
- the vibrating gripper is a component of the sheet feeder, in particular if a contact device is considered to be a component of the sheet feeder.
- the printing press is preferably characterized in that an active compensation actuator, in particular designed as a compensation motor, is arranged connected to the acceptance drum, in particular with its shaft, in torque transmission, in particular bypassing the gear train.
- the printing press is preferably characterized in that the active compensation actuator has a rotor and a stator and that the rotor is connected coaxially and / or without play to the acceptance drum and / or its shaft. Then there is the advantage that installation space can be kept small or that a flank change of gears can be prevented particularly effectively.
- the printing press is preferably characterized in that the rotor of the active compensation actuator is in particular permanently connected to the acceptance drum or its shaft in a non-rotatable manner.
- the printing press is preferably characterized in that the active compensation actuator is designed as an electric motor and / or as a torque motor and / or as a hydraulic motor and / or as a pneumatic motor.
- the printing press is preferably characterized in that a first printing unit of the sheet-fed printing press is arranged in such a way that a first printing unit gear driving this first printing unit is located along the gear train between a gear wheel of the gear train assigned to the main drive motor and generating torque and referred to as the main drive wheel on the one hand and the receiving drum wheel on the other hand is arranged. Compensation is particularly important in such a constellation.
- the printing press is preferably characterized in that a second printing unit of the sheet-fed printing press is arranged in such a way that a second printing unit gear driving this second printing unit is arranged along the gear train between the main drive gear on the one hand and the first printing unit gear on the other hand.
- the printing press is preferably characterized in that the first printing unit is designed as a collective printing unit and / or that the second printing unit is designed as a collective printing unit.
- the highest level of precision is essential, which is why register errors between printing units or system errors are particularly important to avoid.
- the printing press is preferably characterized in that, along the gear train, at least three or at least three or at least three main drive wheels, which are assigned to the main drive motor and generate torque, are located along the gear train five or at least seven or at least eight or at least nine or at least ten gears are arranged.
- the printing press is preferably characterized in that the active compensation actuator is in signal connection with control means of a controller in which a compensation rule designed as an assignment rule is stored or implemented, with a variable representing a current angular position of a machine axis and / or a variable representing a current angular velocity of the machine axis as an input variable and a variable representing a compensation torque as an output variable.
- a compensation rule designed as an assignment rule is stored or implemented, with a variable representing a current angular position of a machine axis and / or a variable representing a current angular velocity of the machine axis as an input variable and a variable representing a compensation torque as an output variable.
- the printing machine is preferably characterized in that a respective transport period is a shortest, repeating sequence of angular positions of the machine axis, after which the acceptance drum again assumes a position that has the same effect and that the compensation rule is designed to activate the active compensation actuator in such a way to control or regulate that at least during a section of the respective transport period a compensation torque opposite to a main torque is introduced into the gear train by means of the active compensation actuator and that the main torque is a torque introduced and / or to be introduced into the gear train by the main drive motor.
- a method for operating a sheet-fed printing machine is preferred, the sheet-fed printing machine preferably having at least one sheet feeder and wherein the sheet-fed printing machine has at least one vibrating gripper and at least one receiving drum arranged downstream of the vibrating gripper and where at least one swivel gear is arranged by means of which a rotational movement of the receiving drum and an alternating and pivoting movement of the oscillating gripper limited by two end positions are coupled and with a main drive wheel is a gear that drives a torque called the main torque from a main drive motor of the sheet-fed printing press into a gear train and a gear wheel connected to the acceptance drum and known as acceptance drum gear is a component of this gear train.
- the receiving drum wheel is preferably arranged connected to the main drive wheel via this gear train, in particular in a torque-transmitting manner.
- a compensation axis is preferably a rotation axis via which a torque can be introduced into the gear train by means of an active compensation actuator and this compensation axis is also the axis of rotation of the acceptance drum wheel or is arranged along the gear train between the acceptance drum wheel and the main drive wheel.
- a machine axis is preferably a repeating sequence of angular positions that are each clearly linked to a respective angular position of the receiving drum, and a respective transport period is a shortest repeating sequence of angular positions of the machine axis, after which the receiving drum again assumes a position with the same effect.
- the active compensation actuator is preferably controlled or regulated in such a way that at least during a partial section of the respective transport period, a compensation torque opposite to the main torque is introduced into the gear train by means of the active compensation actuator.
- the method is preferably characterized in that a first printing unit of the sheet-fed printing press is arranged in such a way that a first printing unit gear driving this first printing unit is arranged along the gear train between the main drive gear of the gear train on the one hand and the receiving drum gear on the other hand, and that this The compensation axis is at the same time the axis of rotation of the acceptance drum wheel or is arranged along the gear train between the acceptance drum wheel and the first printing unit gear.
- the method is preferably characterized in that a feedback section of the respective transport period is a section during which the torque is transmitted from the vibrating gripper to the shaft of the acceptance drum via the swivel gear and that the active compensation actuator is controlled or regulated in this way that at least during the feedback section of the respective transport period, a compensation torque opposite to the main torque is introduced into the gear train by means of the active compensation actuator.
- the method is preferably characterized in that the active compensation actuator is controlled or regulated in such a way that during at least 50% or at least 75% or at least 90% or at least 95% or 100% of the respective transport period by means of the active Compensation actuator, a compensation torque opposite to the main torque is introduced into the gear train.
- the method is preferably characterized in that the size of the compensation torque introduced by means of the active compensation actuator is determined as a function of an angular position of the machine axis and / or is determined as a function of an angular speed of the machine axis.
- the method is preferably characterized in that a tensioning specification is stored as an unambiguously stored assignment specification between the variable representing the angular velocity of the machine axis as an input variable on the one hand and a variable that represents a tensioning torque dependent thereon as an output variable, and that a tensioning component of the respective compensation torque is determined by the current Angular velocity of the machine axis associated bracing torque is derived from the bracing specification.
- the method is preferably characterized in that a system specification is stored as an unambiguously stored assignment specification between the variable representing the angular speed of the machine axis and the variable representing the angular position of the machine axis as input variables on the one hand and a system torque that is dependent on it
- the variable as the output variable and that a system component of the respective compensation torque is determined by deriving the system torque assigned to the current angular velocity and the current angular position of the machine axis from the system specification.
- FIG. 1 shows a schematic representation of a sheet-fed printing machine
- FIG. 2 shows a schematic representation of a printing point group of a printing press according to FIG. 1;
- FIG. 3 shows a schematic representation of an acceptance drum with parts of a swivel gear
- 4 shows a schematic representation of an acceptance drum with parts of a swivel gear
- 5 shows a schematic representation of an oscillating gripper with parts of a swivel gear
- FIG. 6 shows a schematic representation similar to FIG. 2, showing the gear train
- FIG. 7 shows a schematic exemplary course of a torque exchanged between the vibrating gripper and the receiving drum as a function of a machine angle
- FIG. 8 shows an illustration according to FIG. 7, additionally with an exemplary profile of an ideal compensation torque and a resulting torque
- FIG. 9 shows an illustration according to FIG. 7, additionally with an exemplary profile of a limited compensation torque and a resulting torque
- FIG. 10 shows a representation according to FIG. 7, additionally with an exemplary profile of a constant compensation torque and a resulting torque.
- a sheet processing machine 01 preferably has at least one preferably as
- Sheet feeder 03 formed substrate source 03 for sheet 02, that is, arcuate
- Substrate 02 in particular sheet-like printing material 02.
- Sheet processing machine 01 is preferably designed as a sheet-fed printing machine 01.
- the sheet processing machine 01 preferably has several processing units 06; 07;
- the sheet-fed printing press 01 preferably has at least one printing point group 04 with several printing units 06; 07; 08; 09 on. By means of this at least one printing point group 04, the respective sheets 02 can preferably be printed one or more times on one or on both sides in one or more colors or are printed accordingly.
- the sheet processing machine 01 preferably has at least one product display 41 configured, for example, as a stack display 41. At the at least one product display 41, the processed, in particular printed sheets 02 are laid out as products or intermediate products in a stack-like manner or continuously (this can also be seen in FIG. 1 by way of example).
- the sheet processing machine 01 is designed as a security printing machine 01 and in particular designed to convert already printed or unprinted sheets 02, in particular paper sheets 02, such as sheet 02 with a plurality of banknotes per sheet 02, products or products to be processed Manufacture intermediate products.
- the sheet processing machine 01 is designed as a sheet printing machine 01.
- a transport path provided for transporting the sheets 02 through the sheet processing machine 01 is that spatial area which a sheet 02 occupies at least once during its intended transport through the sheet processing machine 01.
- the transport path provided for transporting the sheets 02 preferably begins at the substrate source 03 and preferably ends in the product display 41.
- the transport path between the substrate source 03 and the product display 41 are preferably transport means 14; 16; 18; 31; 32; 33; 34; 36; 37; 38; 39; 58; 59, in particular sheet transport means 14; 16; 18; 31; 32; 33; 34; 36; 37; 38; 39; 58; 59 arranged.
- Such sheet transport means 14; 16; 18; 31; 32; 33; 34; 36; 37; 38; 39; 58; 59 are, for example, as receiving drums 14, transport drums or transport cylinders 14; 16; 18; 31; 32; 33; 34; 36; 38; 39; 58; 59 or designed as chain gripper systems 37.
- the printing units 06; 07; 08; 09 of the pressure point group 04 arranged.
- the sheet-fed printing press 01 preferably has at least one first printing point 11 which is assigned to at least one first printing unit 06.
- Two first printing units 06; 07 and form these two first printing units 06; 07 jointly a double printing point 11 or first double printing point 11.
- the sheet-fed printing press 01 preferably has at least one second printing point 12, which is assigned to at least one second printing unit 08.
- Two second printing units 08; 09 arranged and form these two second printing units 08; 09 jointly a double printing point 12 or a second double printing point 12.
- the sheet-fed printing press 01 can additionally have further printing units which, in particular regardless of the designation as a first printing unit or second printing unit, before or after the at least one first printing unit 06; 07 and / or before or after the at least one second printing unit 08; 09 can be arranged.
- the printing units 06; 07; 08; 09 of the pressure point group 04 can be used individually or in several separate units 04.1; 04.2 be arranged on the transport route or all in a common unit.
- two printing units 06; 07; 08; 09, two in one-sided printing points 11; 12 printing units 06; 07; 08; 09, a one-sided Printing unit 08 and - upstream or preferably downstream - two printing units 06, which form a double printing unit 06, 07 or a double printing point 11; 07, or four in pairs, a double printing unit 06, 07; 08, 09 or a double printing point 11; 12 forming printing units 06; 07.08; 09 be provided.
- At least two pressure points 11; 12 provided one behind the other in the transport path provided for the transport of sheets 02, of which at least one, preferably at least the second, is designed as a double printing point 11, or more preferably both printing points 11; 12 as double printing points 11; 12 are executed.
- the printing units 06; 07; 08; 09 of the printing point group 04 in a printing point group 04 forming a printing tower 04 for example in two stacked units 04.1; 04.2, e.g. B. printing units 04.1; 04.2 provided.
- the transport path provided for the transport of sheets 02 between the printing positions 11; 12 runs from top to bottom here. This should not only be understood to mean a movement that is always directed downwards over the entire intended transport route, but rather a transport movement that leads from top to bottom as a result.
- the two pressure points 11; 12 forming printing units 06; 07; 08; 09 are here advantageously in the same frame assigned to the printing point group 04 one above the other or in two one above the other, each with one printing unit 04.1; 04.2 assigned sub-racks are arranged.
- the printing units 06; 07; 08; 09 of the spaced apart printing points 11; 12 can in principle be designed based on printing processes that differ from one another. At least the one or more printing units or units 08; 09 is or are preferably based on an indirect printing process. The at least one printing unit 08; 09 of the first or upstream printing point 11 or each of the two printing units 06, 07 that interact as an upstream double printing point 11, likewise as an indirect one Printing process carried out based.
- At least one oscillating gripper 13 is preferably arranged along the transport path provided for transporting the sheets 02, in particular in the region of the substrate source 03 or after the substrate source 03.
- the at least one oscillating gripper 13 serves in particular to grasp sheets 02 arranged lying in an aligned manner, to accelerate them in a preferably pivoting movement to a machine speed and then to transfer them to an in particular first acceptance drum 14.
- the transport path provided for transporting the sheets 02 is initially preferably through a series of rotating transport means 14; 16; 18; 31; 32; 33; 34; 36; 38; 39; 58; 59, that is to say transport cylinders 14; 16; 18; 31; 32; 33; 34; 36; 37; 38; 39; 58; 59 set.
- the receiving drum 14 and the following transport cylinder 14; 16; 18; 31; 32; 33; 34; 36; 38; 39; 58; 59 preferably have grippers for this purpose, through the coordinated opening and closing of which the sheets 02 can preferably be passed on.
- This series of rotating transport means 14; 16; 18; 31; 32; 33; 34; 36; 38; 39; 58; 59 preferably includes at least one transport cylinder 16; 18 of a printing unit 06; 08, for example at least one cylinder 16 of the first printing unit 11 embodied as a collecting cylinder 16 and / or transfer cylinder 16 and / or impression cylinder 16 and more preferably also at least one cylinder 18 of the second printing unit embodied as a collecting cylinder 18 and / or transfer cylinder 18 and / or impression cylinder 18 08
- this can also take place via a system based on sheet transfer between cylinders and / or drums, but is preferably carried out by a transport system 37 with a circulating traction mechanism, e.g. B. a chain gripper system 37 caused.
- a transport system 37 with a circulating traction mechanism, e.g. B. a chain gripper system 37 caused.
- a drying device in particular a radiation dryer, such as e.g. B. IR- or UV dryer.
- a respective printing unit 06 designed for indirect printing; 07; 08; 09 comprises a transfer cylinder 16; 17; 18; 19 formed cylinder 16; 17; 18; 19, e.g. B. printing unit cylinder 16; 17; 18; 19, which is used as an impression cylinder 16; 17; 18; 19 effective cylinder 17; 16; 18; 19, e.g. B. printing unit cylinder 17; 16; 18; 19, a printing point n; 12 trains.
- a double printing point 11; 12 is the respective as an impression cylinder 17; 16; 18; 19 effective printing cylinder 17; 16; 18; 19 also by an ink-carrying printing unit cylinder 17; 16; 18; 19, in particular the transfer cylinder 17; 16; 18; 19 of the first-mentioned printing unit 06; 07; 08; 09 a double printing unit 06; 07.08; 09 training printing unit 06; 07; 08; 09 formed.
- the transfer cylinder 17; 16; 18, 19 acts - in relation to the ink flow upstream - with at least one imaging cylinder 21; 22; 23; 24, e.g. B. printing unit cylinder 21; 22; 23; 24, e.g. B. at least one forme cylinder 21; 22; 23; 24, which upstream by a suitable inking device 26; 27; 28; 29, e.g. B. an inking unit 26; 27; 28; 29, is colored with printing ink or can be colored.
- the forme cylinder 21; 22; 23; 24 and the associated inking unit 26; 27; 28; 29 can basically be based on any printing method, but are preferably based on an, in particular indirect, planographic printing method or on an, in particular indirect, relief or relief printing method, in particular letterset printing method.
- the forme cylinder 21; 22; 23; 24 on its circumference in the first-mentioned embodiment, a planographic printing form, not shown here, z.
- At least one of the printing units 06; 07; 08; 09 as collective printing unit 06; 07; 08; 09 executed, so in particular for a simultaneous, in particular multicolored, printing of two partial print images.
- the at least one first printing unit 06 is preferably designed as a collective printing unit 06 and / or both first printing units 06; 07 as collective printing units 06; 07 and / or the at least one second printing unit 08 is embodied as a collective printing unit 08 and / or both second printing units 08; 09 as collective printing units 08; 09 trained.
- the at least one as collective printing unit 06; 07; 08; 09 trained printing unit 06; 07; 08; 09 comprises as transfer cylinder 16; 17; 18; 19 one as a collecting cylinder 16; 17; 18; 19 effective ink-carrying printing unit cylinder 16; 17; 18; 19, which in relation to the ink flow upstream with at least two imaging printing unit cylinders 21; 22; 23; 24, e.g. B. at least two forme cylinders 21; 22; 23; 24 cooperates, which by respective inking devices 26; 27; 28; 29, e.g. B. inking units 26; 27; 28; 29 can be colored.
- the forme cylinders 21; 22; 23; 24 and associated inking units 26; 27; 28; 29 of a collective printing unit 06; 07; 08; 09 all in the above sense as working according to the planographic printing or working according to the letterpress, or else partly as working according to the planographic printing and another part as working according to the letterpress.
- an opposite printing unit 07; 06; 09; 08 can also be used as a collective printing unit 07; 06; 09; 08 be formed and one in the manner set out above as a collecting cylinder 17; 16; 19; 18 effective transfer cylinder 17; 16; 19; 18 have.
- the printing unit cylinders 16; 17 of the first printing point 11 are preferably double-sized, ie designed to accommodate two sheets of printing material 02 on the circumference.
- the printing unit cylinders 18; 19 of the second printing point 12 are preferably three times the size, ie designed to accommodate three sheets of printing material 02 on the circumference. In an alternative embodiment, the printing unit cylinders 18; 19 of the second printing point 12 made double-sized.
- 11 per pressure point; 12 is one of the two the pressure point 11; 12 educational Printing unit cylinder 16; 17; 18; 19 as a transport cylinder 16; 17; 18; 19 executed and effective as such and preferably comprises one or more holding devices, in particular so-called gripper strips, on the circumference.
- the sheet-fed printing machine 01 preferably has at least one gear train 51, in particular a gear train 51.
- This gear train 51 comprises a number of gears 46; 49; 52; 53; 61; 62; 63; 64; 66; 67; 68; 69, which are in engagement with one another via their teeth and are thus able to transmit torque.
- the gear train 51 preferably includes such gears 46; 49; 52; 53; 61; 62; 63; 64; 66; 67; 68; 69, which are each rotatably connected to a respective shaft of a respective transport means 14; 16; 18; 31; 32; 33; 34; 36; 38; 39; 58; 59 are connected.
- the sheet-fed printing machine 01 preferably has at least one main drive motor 48, which is more preferably designed as an electric motor 48.
- the main drive motor 48 is preferably connected in a torque-transmitting manner to a gear 49 of the gear train 51 designed as a main drive wheel 49.
- the main drive wheel 49 is that gear 49 via which a main torque can be or is introduced into the gear train 51 from the main drive motor 48.
- further torque transducers are arranged between the main drive wheel 49 and a rotor of the main drive motor 48, in particular gear wheels and / or belts and / or friction wheels and / or gears and / or chains.
- the main drive wheel 49 is connected in a rotationally fixed manner to the rotor of the main drive motor 48.
- the sheet-fed printing machine 01 preferably has the at least one sheet feeder 03, and the sheet-fed printing machine 01 has at least one oscillating gripper 13, in particular pivotably mounted about a pivot axis 42, and at least one receiving drum 14 downstream of the oscillating gripper 13.
- the sheet feeder 03 has the at least one oscillating gripper 13 and / or the acceptance drum 14.
- the receiving drum 14 is preferably used to remove sheets from the vibrating gripper 13 to take over.
- At least one, in particular mechanical, pivoting gear 43 is preferably arranged, which is designed for coupling and in particular for converting a rotational movement of a shaft 44 of the receiving drum 14 and an alternating pivoting movement of the oscillating gripper 13 limited by two end positions.
- This shaft 44 of the acceptance drum 14 does not have to be designed as a continuous shaft 44, but can, for example, essentially consist of two drum journals.
- the acceptance drum 14 is preferably connected in a rotationally fixed manner to a gear 46 designated as an acceptance drum wheel 46, in particular via a shaft 44 of the acceptance drum 14.
- the acceptance drum wheel 46 is preferably part of the gear train 51
- Receiving drum wheel 46 designated gear 46 is arranged connected via the gear train 51 containing this receiving drum wheel 46 to the main drive motor 48 of the sheet-fed printing machine 01, in particular in a torque-transmitting manner.
- a first transport means 31 which is preferably designed as a first transport cylinder 31, is preferably arranged along the transport path provided for the transport of sheets 02 following the acceptance drum 14.
- This transport means 31 is preferably non-rotatably connected to a gear 61 of the gear train 51, which is in engagement with the receiving drum wheel 46.
- a transport cylinder 16 of the first printing unit 06 is preferably arranged along the transport path provided for the transport of sheets 02 after this first transport means 31, which is designed, for example, as an impression cylinder 16 and / or as a transfer cylinder 16 and / or as a collecting cylinder 16.
- This transport cylinder 16 of the first printing unit 06 is preferably connected to a first printing unit gear 52 in a rotationally fixed manner.
- This first printing unit gear 52 is preferably part of the gear train 51.
- a number of further transport means 32; 58; 59 arranged and in particular interposed. Each of these numbers of further transport means 32; 58; 59 each has a further gear 62; 63; 64 assigned and in particular twist test associated with this. This number is, for example, at least one or at least two or at least three.
- a corresponding number of gears 62; 63; 64 arranged, in particular at least one or at least two or at least three.
- the printing press 01 is preferably characterized in that a first printing unit 06 of the sheet-fed printing press 01 is arranged in such a way that a first printing unit gear 52 driving this first printing unit 06 along the gear train 51 between a main drive motor 48 assigned and driving torque and as the main drive wheel 49 designated gear 49 of the gear train 51 on the one hand and the receiving drum wheel 46 on the other hand is arranged.
- the printing press 01 is preferably characterized in that the first printing unit 06 is designed as a collective printing unit 06.
- a transport cylinder 18 of the second printing unit 08 which is designed, for example, as an impression cylinder 18 and / or as a transfer cylinder 18 and / or as a collecting cylinder 18, is preferably arranged along the transport path provided for the transport of sheets 02 after the transport cylinder 16 of the first printing unit 06.
- This transport cylinder 18 of the second printing unit 08 is preferably connected to a second printing unit gear 53 in a rotationally fixed manner.
- This second printing unit gear 53 is preferably part of the gear train 51.
- the sheet is preferably transported from one printing point 11, in particular from its printing unit cylinder 16, which acts as a transport cylinder 16, to the further downstream printing point 12, in particular to its printing unit cylinder 18, which acts as a transport cylinder 18, via at least one rotating transport means 33;
- the transport between the two printing points 11; 12 is thus preferably based on a transport system with successive sheet transfer between cylinders 16 involved in the transport; 18 and / or means of transport 33; 38; 39.
- the transport point group 04 with a transport path running from top to bottom between the printing points 11; 12 is the sheet transfer z. B. each of a higher with its axis cylinder 16; 18 or means of transport 33; 38; 39 ago.
- This further means of transport 33; 38; 39 are preferred as the transport cylinder 33; 38; 39 trained.
- Each of these numbers of further transport means 33; 38; 39 each has a further gear 66; 67; 68 assigned and in particular connected to it in a rotationally fixed manner.
- This number is, for example, at least one or at least two or at least three.
- a further transport means 34 preferably designed as a transport cylinder 34, is arranged along the transport path provided for the transport of sheets 02 directly after the transport cylinder 18 of the second printing unit 08.
- a further gear 69 is preferably assigned to this further transport means 34 and, in particular, is connected to it in a rotationally test manner.
- a drive transport means 36 in particular a drive transport cylinder 36, is arranged along the transport path provided for transporting sheets 02 directly after this further transport means 34.
- the main drive wheel 49 is preferably assigned to this drive transport means 36 and, in particular, is connected to it in a rotationally fixed manner.
- the drive transport means 36 is followed by a transport system 37, which is preferably designed as a chain gripper system 37 and which more preferably extends as far as the product display 41.
- the further transport of the sheets 02 after the drive transport means 36 can also take place via rotating transport means, in particular transport cylinders.
- the printing press 01 is preferably characterized in that a second printing unit 08 of the sheet-fed printing press 01 is arranged in such a way that a second printing unit gear 53 driving this second printing unit 08 along the gear train 51 between the main drive wheel 49 on the one hand and the first printing unit gear 52 is arranged on the other hand.
- the printing press 01 is preferably characterized in that the second printing unit 08 is designed as a collective printing unit 08.
- the printing press 01 is preferably characterized in that, along the gear train 51, between a main drive gear 49 of the gear train 51 assigned to the main drive motor 48 and generating torque and the receiving drum gear 46 of the gear train 51, at least three or at least five or at least seven or at least eight or at least nine or at least ten gears 46; 49; 52; 53; 61; 62; 63; 64; 66; 67; 68; 69 are arranged.
- the printing press 01 is preferably characterized in that an active compensation actuator 47 is arranged connected to the acceptance drum 14 and / or to the shaft 44 of the acceptance drum 14 in a manner that transmits torque, in particular by bypassing the gear train 51.
- the active compensation actuator 47 is preferably designed as a compensation motor 47 and / or preferably has a rotor and a stator.
- the rotor is preferably connected coaxially and / or free of play with the acceptance drum 14, in particular with the shaft 44 of the acceptance drum 14.
- the active compensation actuator 47 is preferably designed as an electric motor 47, in particular as a torque motor 47.
- a torque motor is preferably an in particular high-pole electric motor to understand with hollow shaft.
- a torque motor preferably has a particularly high torque and / or a relatively low speed and / or is preferably designed as a direct drive.
- the rotor of the compensation actuator 47 is preferably arranged further outward than the stator in relation to its axis of rotation 54.
- the active compensation actuator 47 is designed as a hydraulic motor 47 or as a pneumatic motor 47.
- the printing press 01 is preferably characterized in that the rotor of the active compensation actuator 47 is non-rotatably, in particular permanently non-rotatably, connected to the acceptance drum 14 and in particular to the shaft 44 of the acceptance drum 14. This means in particular that no additional gear is interposed. Alternatively, for example, a backlash-free gear is interposed.
- the printing press 01 is preferably characterized in that the active compensation actuator 47 is also included
- Control means of a controller 71 is in signal connection, in which a compensation rule designed as an assignment rule is stored or implemented, with a current angular position of a machine axis 56 and / or a current angular speed of the machine axis 56 as an input variable and a compensation torque Z2; Z3; Z4 as the output variable.
- At least one angular position encoder 72 is preferably arranged and connected to the controller 71.
- the angular position encoder 72 preferably measures an angular position of a rotating component, for example a means of transport 34 or that of the rotor of the main drive motor 48. In this way, the controller is preferably informed about the angular position and / or the angular speed of the machine axis 56 at all times.
- the printing machine 01 is preferably characterized in that a respective transport period is a shortest, repeating sequence of angular positions of the machine axis 56, according to which the acceptance drum 14 again assumes a position that has the same effect and that the compensation rule is designed to to control or regulate active compensation actuator 47 in such a way that at least during a partial section of the respective transport period, by means of active compensation actuator 47, a compensation torque Z2; Z3; Z4 is introduced into the gear train 51 and that the main torque is a torque introduced and / or to be introduced into the gear train 51 by the main drive motor 48.
- At least one, in particular, mechanical pivoting gear 43 is preferably arranged, which is designed for coupling and in particular for converting a rotational movement of a shaft 44 of the receiving drum 14 and an alternating pivoting movement of the oscillating gripper 13 limited by two end positions.
- This swivel gear 43 has, for example, at least one cam carrier 73 and preferably two cam carriers 73, which further preferably rotatably connected to the receiving drum 14 and in particular the shaft 44 thereof.
- This swivel gear 43 preferably has at least one pick-off member 74 and more preferably two pick-off members 74, which are further preferably arranged connected to the oscillating gripper in a rotationally test manner and are arranged cooperating with a respective one of the cam carriers 73.
- the vibrating gripper is at rest (position A1 ) and grabs a sheet 02. Then the vibrating gripper 13 is accelerated and thereby reaches a maximum acceleration at position B1. At position C1 there is initially no further acceleration, but rather the transfer of the sheet to the acceptance drum 13 Position E1, which reaches its maximum value at position D1. The area between C1 and E1 is also referred to as the feedback section. From position E1, there is renewed acceleration in the opposite direction to position G1, which reaches its maximum value at position F1. Position G1 corresponds to this the position A1 of the next cycle.)
- a method for operating a sheet-fed printing press 01 is preferred, wherein the Sheet-fed printing machine 01 preferably has the at least one sheet feeder 03 and wherein the sheet-fed printing machine 01 has the at least one oscillating gripper 13, in particular pivotably mounted about its pivot axis 42, and at least one receiving drum 14 downstream of the oscillating gripper 13, and wherein at least one, in particular, mechanical pivoting gear 43 is arranged, by means of which one Rotational movement of the receiving drum 14 and an alternating pivoting movement of the oscillating gripper 13 limited by two end positions are coupled.
- a main drive wheel 49 is preferably a gear wheel 49 which drives a torque, referred to as the main torque, from a main drive motor 48 of the sheet-fed printing press 01 into a gear train 51.
- a gear 46 which is non-rotatably connected to the acceptance drum 14 and designated as an acceptance drum wheel 46, is a component of this gear train 51 and more preferably connected via this gear train 51 to the main drive wheel 49, in particular in a torque-transmitting manner.
- a compensation axis 54 is preferably a rotation axis 54, for example a rotation axis 54 of a gearwheel 46, via which a torque can be introduced into the gear train 51 by means of an active compensation actuator 47.
- This compensation axis 54 is preferably arranged at the same time as the axis of rotation 57 of the acceptance drum wheel 46 or along the gear train 51 between the acceptance drum wheel 46 and the main drive wheel 49. Such a rotation axis is to be understood in a mathematical sense.
- a machine axis 56 is preferably a repeating sequence of angular positions which are each clearly linked to a respective angular position of the acceptance drum 14. These angular positions of the machine axis 56 can correspond to a real component or represent a virtual machine axis 56.
- a respective transport period is preferably a shortest repetitive sequence of angular positions of the machine axis 56, after which the receiving drum 14 again assumes a position that has the same effect. Below is a position that has the same effect For example, to understand the same position after one revolution if it is a single-size receiving drum 14.
- the active compensation actuator 47 is preferably controlled or regulated in such a way that at least during a partial section of the respective transport period, by means of the active compensation actuator 47, a compensation torque Z2; Z3; Z4 is introduced into the gear train 51.
- This compensation torque Z2; Z3; Z4 has, for example, a tension component and / or a system component.
- the tension component preferably serves to generate as similar tension as possible in the gear train 51, even with operating modes running at different speeds, so that the quality and / or position of the printed images do not depend on the machine speed.
- the tension component is determined, for example, as a function of the machine speed and preferably remains constant at a constant machine speed.
- the system component is preferably used to prevent an edge change. It is therefore dependent on the current angular position.
- the system component is preferably also modified by a factor that includes the current machine speed, in particular quadratic. This takes into account the higher accelerations for the direction reversal at higher machine speeds.
- FIG. 8 in addition to the exchanged torque Z1 according to FIG. 7, a profile of an ideal compensation torque Z2 is shown by way of example. This is essentially a reflection of the course of the exchanged torque Z1, but has an offset applied to it.
- the above-mentioned exemplary positions A1; B1; C1; D1; E1; F1; G1 of the course of the exchanged torque Z1 a respective corresponding position A2; B2; C2; D2; E2; F2; G2 assigned to the course of the ideal compensation torque Z2.
- a constant resultant torque R1 In total it results then a constant resultant torque R1.
- FIG. 9 in addition to the exchanged torque Z1 according to FIG. 7, a profile of a limited compensation torque Z3 is shown as an example.
- the course of the limited compensation torque Z3 largely corresponds to that of the ideal compensation torque Z2, but with the difference that only a constant compensation torque Z3 is exerted between positions H2 and J2. This results in a changed course of the resulting torque R2, which, however, preferably still remains negative even at position K with the lowest amount of resulting torque R2 and prevents a change in edge.
- the method is preferably characterized in that a first printing unit 06 of the sheet-fed printing press 01 is arranged in such a way that a first printing unit gear 52 driving this first printing unit 06 along the gear train 51 between the main drive gear 49 of the gear train 51 on the one hand and the Acceptance drum wheel 46 is arranged on the other hand and that this compensation axis 54 is at the same time the axis of rotation 57 of the acceptance drum wheel 46 or is arranged along the gear train 51 between the acceptance drum wheel 46 and the first printing unit gear 52.
- the method is preferably characterized in that a feedback section C1-E1 of the respective Transport period is a section - i.e. in particular a sequence of angular positions - during which the torque is transmitted from the vibrating gripper 13 via the swivel gear 43 to the shaft 44 of the receiving drum 14 and that the active compensation actuator 47 is controlled or regulated in such a way that at least during the feedback section C1-E1 of the respective transport period, by means of the active compensation actuator 47, a compensation torque Z2 opposite to the main torque; Z3; Z4 is introduced into the gear train 51.
- the method is preferably characterized in that the active compensation actuator 47 is controlled or regulated in such a way that during at least 50%, more preferably at least 75%, even more preferably at least 90%, even more preferably at least 95% and even more preferably 100% of the respective transport period by means of the active compensation actuator 47 a compensation torque Z2 opposite to the main torque; Z3; Z4 is introduced into the gear train 51.
- the method is preferably characterized in that the size of the compensation torque Z2; Z3; Z4 is defined as a function of an angular position of the machine axis 56 and / or is defined as a function of an angular speed of the machine axis 56.
- the method is preferably characterized in that a tensioning specification is stored as an unambiguously stored assignment specification between the angular speed of the machine axis 56 as an input variable on the one hand and a tensioning torque dependent thereon as an output variable, and on the other hand, a tensioning component of the respective compensation torque Z2; Z3; Z4 is determined by the associated with the current angular velocity of the machine axis 56 Bracing torque is derived from the bracing specification.
- the angular speed of the machine axis 56 is preferably included linearly in this tensioning specification and / or the tension component forms a constant offset in the course of the compensation torque if the angular speed of the machine axis 56 remains constant.
- the method is preferably characterized in that a system specification is stored as a clearly stored assignment specification between the angular velocity of the machine axis 56 and the angular position of the machine axis 56 as input variables on the one hand and a system torque dependent thereon as the output variable and that a system component the respective compensation torque Z2; Z3; Z4 is determined by deriving the contact torque associated with the current angular velocity and the current angular position of the machine axis 56 from the installation specification.
- the system specification is intended to ensure that the corresponding gear wheel flanks are always in contact and that there is no flank change.
- the angular velocity of the machine axis 56 is preferably included in this system specification as a square, in particular in a proportionality factor which determines the amplitude in the course of the compensation torque Z2; Z3; Z4 changes, even if the angular velocity of the machine axis 56 remains constant.
- the basic curve of the compensation torque Z2 is preferred; Z3; Z4 stored in a memory, in particular in the form of a table of support points, and / or derived from theoretical and / or metrologically determined data.
- the moment of inertia of the oscillating gripper 13 the geometry of the swivel gear and preferably also friction losses are included in the determination.
- the compensation rule is preferably composed at least of the tensioning rule and the installation rule.
- the compensation rule consists of a sum of the tension rule and the installation rule.
- the compensation torque to be applied is preferably calculated at regular intervals by means of the tensioning specification and / or the system specification and / or the compensation specification and, more preferably, is supplied to a drive controller of the active compensation actuator 47 as a setpoint torque.
- this regular calculation takes place at least ten times, more preferably at least a hundred times, even more preferably at least a thousand times per transport cycle.
- this regular calculation takes place at least once every 100 ms (one hundred milliseconds), more preferably at least once every 10 ms and even more preferably at least once every 5 ms.
- the cylinders 16; 17 and the cylinders 18; 19 are, for example, arranged one above the other in the same frame or in two sub-frames arranged one above the other.
- the one or more intervening transport means 33; 38; 39 is or are e.g. B. also in the common frame, in one of the o. G. Sub-frames, in a specially provided intermediate frame or - in the case of several transport means 33; 38; 39 - possibly divided into the above Part frames and / or the intermediate frame provided.
- the transport route running from top to bottom should not only be understood to mean a movement that is always downward over the entire transport route, but also z.
- also transport routes that have one or more - for example, by means of rotating transport means 33; 38; 39 conditional - include transport path sections with a transport direction running sideways or even upwards.
- the sheet-fed printing machine 01 has a sideways running transport path and / or the sheet-fed printing machine has at least four printing units, each of which has exactly one impression cylinder, exactly one transfer cylinder and exactly one forme cylinder.
- exactly one transport cylinder is arranged along a transport path provided for sheets between two such impression cylinders.
- Swivel gear shaft (14) - gear wheel, acceptance drum wheel, compensation actuator, compensation motor, motor, electric motor, torque motor, hydraulic motor, pneumatic motor , Main drive motor, electric motor 49 gear, main drive gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020102482.7A DE102020102482B4 (de) | 2020-01-31 | 2020-01-31 | Bogendruckmaschine und ein Verfahren zum Betreiben einer Bogendruckmaschine |
| PCT/EP2020/083875 WO2021151557A1 (de) | 2020-01-31 | 2020-11-30 | Bogendruckmaschine und ein verfahren zum betreiben einer bogendruckmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4031376A1 true EP4031376A1 (de) | 2022-07-27 |
| EP4031376B1 EP4031376B1 (de) | 2023-06-28 |
Family
ID=73694974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20817246.0A Active EP4031376B1 (de) | 2020-01-31 | 2020-11-30 | Bogendruckmaschine und ein verfahren zum betreiben einer bogendruckmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4031376B1 (de) |
| DE (1) | DE102020102482B4 (de) |
| WO (1) | WO2021151557A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3138540A1 (de) | 1981-09-28 | 1983-04-14 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zum zufuehren von auf einem anlegertisch vereinzelten und nach vorder- und seitenkante ausgerichteten bogen |
| DD293326A5 (de) * | 1990-03-30 | 1991-08-29 | Planeta Druckmaschinenwerk Ag,De | Kurvengesteuertes leistungsausgleichsgetriebe |
| DE19616755C2 (de) | 1996-04-26 | 1999-12-16 | Heidelberger Druckmasch Ag | Antrieb für einen schwingenden Vorgreifer einer Bogendruckmaschine |
| DE10040951A1 (de) * | 1999-09-06 | 2001-03-08 | Heidelberger Druckmasch Ag | Druckmaschine mit Momentenausgleich |
| DE102006004572B4 (de) | 2006-02-01 | 2018-05-30 | Koenig & Bauer Ag | Antrieb einer Schwinganlage |
| DE102008060291B4 (de) * | 2007-12-13 | 2022-09-01 | Heidelberger Druckmaschinen Ag | Bogenbeschleunigungssystem für eine Bogendruckmaschine |
| EP3017946A1 (de) | 2014-11-07 | 2016-05-11 | KBA-NotaSys SA | Druckpresse zum gleichzeitigen Schöndruck/Widerdruck |
-
2020
- 2020-01-31 DE DE102020102482.7A patent/DE102020102482B4/de active Active
- 2020-11-30 EP EP20817246.0A patent/EP4031376B1/de active Active
- 2020-11-30 WO PCT/EP2020/083875 patent/WO2021151557A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021151557A1 (de) | 2021-08-05 |
| EP4031376B1 (de) | 2023-06-28 |
| DE102020102482A1 (de) | 2021-08-05 |
| DE102020102482B4 (de) | 2023-03-30 |
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