Binder application station

Abstract

The invention relates to a binder application station (1) for the application of binder (2) in the correct format to workpieces (7) during the production of bags, having a binder housing (4) and an application roller (8), by means of which binder (2) can be applied from the binder housing (4) to a cliché (10) of a cliché cylinder (12). The binding agent (2) can be transferred to the workpiece (7) by means of the cliché (10). In addition, the binder application station (1) has a metering roller (14) with which the binder (2) can be metered. The respective workpiece (7) can be guided by a counter-pressure cylinder (20) during the transfer of the binding agent (2) from the cliché cylinder (12). The counter-pressure cylinder (20) can be rotationally driven by means of a drive device (22). The invention further relates to a method for applying binder (2) in the correct format to workpieces (7).

Description

[0001] Windmöller & Hölscher SE & Co. KG

[0002] Münsterstraße 50

[0003] 49525 Lengerich / Westphalia

[0004] Our reference number: 9593 WO - JK

[0005] Binder application station

[0006] The invention relates to a binder application station for applying binder to workpieces according to claim 1 in a format-compliant manner. Such binder application stations are regularly used in the production of bags. The binder application station comprises a binder housing that can be filled with binder and an application roller with which the binder can be taken from the binder housing and applied to a cliché of a cliché cylinder. It is provided that the binder can be transferred to the respective workpiece in a format-compliant manner by means of the cliché. Furthermore, the binder application station comprises at least one metering roller with which the quantity of binder taken from the binder housing by the application roller can be adjusted. The respective workpiece can be guided by the cliché cylinder on a counter-pressure cylinder of the binder application station during the binder transfer.Furthermore, the binder application station has a drive device by means of which at least the counter-pressure cylinder can be driven rotaryally at a cycle angle speed. The invention further relates to a method for applying binder to workpieces by means of a binder application station and a control unit for the computer-aided execution of such a method with such a binder application station; the invention also relates to a device for the production of bags, which includes a binder application station.

[0007] In the production of bags, it is advantageous, due to the different materials involved, to apply a precisely measured amount of binder to the workpieces to be bonded. Insufficient binder in bags can lead to leaks or promote premature leakage. Conversely, excessive binder extends the drying time and thus the production time of the bags, meaning they cannot be filled immediately. For the purposes of this invention, binders are understood to be, in particular, glues, adhesives, or glue-adhesive mixtures.

[0008] In this regard, it is known in particular from WO 2009 / 109450 A1 to adjust the relative orientations of the respective rollers to each other by means of motor-adjustable spacing devices in order to adjust the metering of the amount of binder taken from the binder housing by the application roller in a suitable manner by means of an adapted positioning of the rollers.

[0009] Known binder application devices have a drive device designed such that the counter-pressure cylinder, the cliché cylinder, the application roller and the metering roller are driven by this one drive device via a belt and / or chain and / or gear or transmission connection.Particularly due to differently designed workpieces and / or clichés and / or different diameters of the cliché cylinder and the counter-pressure cylinder, mechanical transmissions are often required to synchronize the respective rotational speeds with each other and with a cycle length T in such a way that during ongoing production the cliché and a binder section of the workpiece, onto which the binder is to be applied, are each brought into mutual contact with a rotatingly leading end at the same time, and the cliché and the binder section of the workpiece are each brought out of mutual contact with a rotatingly trailing end at the same time.

[0010] A potential disadvantage is that, for example, wear and tear and / or shocks and / or vibrations can cause synchronization errors, resulting in a misalignment between the leading and trailing ends during ongoing production. A misalignment can also occur due to a change in order or alterations to other production-relevant parameters.

[0011] Essential for an exact and format-compliant transfer of the binding agent is that the cliché and the binding agent section of the workpiece, with their respective rotating forward ends, are simultaneously brought into mutual contact and that the cliché and the binding agent section of the workpiece, with their respective rotating backward ends, are simultaneously led out of mutual contact again.

[0012] It has been found that in bag production, the quality and functionality of the bags depend crucially on the precise and dimensionally accurate application of the binder to the designated binder section of the workpiece. If the binder is not applied with sufficient precision and dimension accuracy to this section, various problems can arise. An uneven distribution of the binder can result in the workpiece having an excess and / or a deficiency of binder in at least some sections, thus creating a risk of bursting and / or detachment in the binder section, at least in some areas. Furthermore, an overdose of binder can cause it to leak from the bonding area, leading to production-related, aesthetic, and functional disadvantages.Unglued areas regularly lead to structural weaknesses, causing the bag to lose its shape or even disintegrate. Another common problem is that an inaccurate application of the binding agent leads to problems during further processing and packaging. For example, adhesion occurs in undesirable areas, preventing folding and / or forming processes from being carried out correctly. Furthermore, an excessive or inaccurate application of binding agent can lead to contamination in production machinery.

[0013] The object of the present invention is therefore to provide a binder application station and a method for applying binder to workpieces by means of a binder application station and a control unit for carrying out such a method, which overcome the problems known from the prior art, in particular enabling a precise and format-appropriate binder application to the workpiece.

[0014] According to the invention, this problem is solved by all the features of claim 1. Possible embodiments of the invention are specified in the dependent claims.

[0015] According to the invention, the cliché cylinder can be driven rotaryally by means of a cliché cylinder drive controllable via a control unit, wherein, by means of the control unit, in particular during ongoing production, a cliché angular velocity of the cliché cylinder can be set at least independently of the indexing angular velocity of the counter-pressure cylinder.

[0016] It is within the scope of the invention that the control unit is arranged or designed as an integral element at the binder application station and / or at a device comprising the binder application station for producing bags from workpieces.

[0017] It may be advantageous to provide the control unit with a user interface for setting the respective cliché angle speeds.

[0018] The design according to the invention allows, particularly without mechanical intervention, at least the cliché angular velocity of the cliché cylinder to be adapted to the indexing angular velocity of the counter-pressure cylinder in such a way that a precise and format-compliant transfer of the binding agent can be achieved. Furthermore, wear can be counteracted, and adaptation to changing orders and / or parameters can be carried out simply, quickly, and easily. For advantageous adjustability of the cliché cylinder drive, it has proven beneficial in practice to design the cliché cylinder drive as an electric motor controllable by the control unit, which provides rotation about a drive axis for driving the cliché cylinder.Wear and, in particular, the need for mechanical transmission elements between the cliché cylinder and the cliché cylinder drive can be advantageously reduced by arranging the drive axis of the electric motor parallel to a rotational axis of the cliché cylinder, according to an advantageous embodiment of the invention. It is particularly preferred that the drive axis of the electric motor be arranged coaxially with the rotational axis of the cliché cylinder.

[0019] Advantageously, the binder application station, at least the cliché cylinder drive and especially the control unit, is designed such that the cliché angular velocity of the cliché cylinder can be varied by means of the control unit during ongoing production, independently of the indexing angular velocity of the counter-pressure cylinder. It has proven particularly advantageous that motion parameters, such as acceleration and / or deceleration, can be adjusted during ongoing production. In particular, this embodiment can also provide for adjustable motion profiles that include a sequence of acceleration and / or deceleration phases.

[0020] Advantageously, the radial positioning of the application roller, the metering roller, the printing plate cylinder, and the counter-pressure cylinder relative to each other can be determined by means of spacer devices designed such that the radial positions of the application roller, the metering roller, the printing plate cylinder, and the counter-pressure cylinder relative to each other are adjustable for setting the amount of binder, in particular by means of spindles. The respective spacer device may expediently correspond to an embodiment known from WO 2009 / 109450 A1. A particularly preferred embodiment of the invention provides that the spacer devices have, at least partially, motorized drives, in particular electric motors, for setting the respective radial position, which can be controlled, in particular, by means of the control unit.

[0021] In practice, it has proven particularly advantageous to arrange the cliché cylinder drive, especially the electric motor, in a stationary or fixed position on a support of the binder application station.

[0022] It is particularly advantageous to connect the electric motor to the printing cylinder via a parallel crank mechanism, especially a Schmidt coupling. The parallel crank mechanism, preferably the Schmidt coupling, allows the drive axis of the electric motor and the axis of rotation of the printing cylinder to be arranged parallel to each other but radially offset from one another, while still allowing torque to be transmitted from the drive axis to the axis of rotation. In particular, it is possible to arrange the drive axis of the electric motor and the axis of rotation of the printing cylinder parallel to each other but radially offset from one another while the printing cylinder is being driven by the electric motor.

[0023] One embodiment of the invention provides that workpieces identified as defective in the production process before the application of the binding agent are no longer treated with binding agent and are rejected. To improve such rejection, and in particular to prevent binding agent transfer from the printing plate to the counter-pressure cylinder (which, due to the rejection, no longer carries a workpiece), a particular embodiment provides that the counter-pressure cylinder, with a first motor-driven spacer device, and / or the printing plate cylinder, with a second motor-driven spacer device, are each movable between an engagement position and an idle position.

[0024] It may be expedient to provide that the counter-pressure cylinder can be reversibly moved from the engagement position to the idle position in a direction radially away from the cliché cylinder by means of the first spacing device.

[0025] Alternatively or additionally, it can be provided that the cliché cylinder can be reversibly moved from the engagement position to the idle position in a direction radially away from the counter-pressure cylinder by means of the second spacer device. In particular, a combination with the cliché cylinder drive designed as an electric motor and a parallel crank drive, especially a Schmidt coupling, according to the aforementioned embodiment can provide a continuous drive of the cliché cylinder during its movement between the engagement position and the idle position.

[0026] The aforementioned engagement positions are preferably arranged or designed such that, in the respective engagement position, the workpiece can be clamped between the counter-pressure cylinder and the cliché cylinder, allowing the adhesive to be transferred from the cliché to the workpiece. In contrast, the aforementioned idle positions are arranged or designed such that, in the respective idle position, a radial gap is formed between the counter-pressure cylinder and the cliché cylinder that no adhesive transfer from the cliché to the counter-pressure cylinder occurs when the counter-pressure cylinder is not guiding a workpiece, particularly due to the rejection of defective workpieces.

[0027] It may be advantageous to provide that the first and / or the second spacing device each has a pneumatic drive which can be controlled in particular by the control unit.

[0028] The problem underlying the invention is also solved by a method for applying binder to workpieces in a format-compliant manner during the production of bags, using a binder application station with at least the features of claim 10. Preferably, the method can be carried out with a binder application station according to one of the aforementioned embodiments.

[0029] The process provides that the binder held in the binder housing is taken from the binder housing by means of the application roller, whereby the amount of binder that the application roller takes from the binder housing is adjusted by means of the metering roller.

[0030] The process further stipulates that the binding agent is applied to the cliché of the cliché cylinder by the application roller and transferred by the cliché to the workpiece in the correct format. During the transfer of the binding agent, the workpiece is guided from the cliché cylinder to the impression cylinder. The impression cylinder is rotated by the drive unit at a specific indexing speed.

[0031] According to the invention, the method provides that the cliché cylinder is driven rotaryally by means of the cliché cylinder drive which can be controlled by the control unit, wherein the cliché angular velocity of the cliché cylinder is set by means of the control unit at least independently of the stroke angular velocity of the counter-pressure cylinder.

[0032] According to an advantageous embodiment of the invention, an operator can set the cliché angle speed via the user interface of the control unit.

[0033] Advantageously, the binder section of the workpiece has an application length measured on the circumference of the counter-pressure cylinder, and the cliché has a cliché length measured on the circumference of the cliché cylinder.

[0034] An advantageous embodiment of the method consists in the fact that the counter-pressure cylinder rotates at least over a cycle length with a constant cycle angular velocity, wherein within this cycle length the cliché angular velocity of the cliché cylinder is set / is set independently of the cycle angular velocity of the counter-pressure cylinder.

[0035] In the context of the invention, the cycle length describes in particular a period of time and / or a distance that lies between the start or planned start of the transfer of the binder to the binder section of a first workpiece and the start or planned start of the transfer of the binder to the binder section of a second workpiece immediately following in a production sequence.

[0036] In particular, it is provided that the cliché angular velocity of the cliché cylinder is adjusted relative to the indexing angular velocity of the counter-pressure cylinder over the cycle length T such that the cliché and the binder section of the workpiece are each brought into contact with each other simultaneously at a rotatingly advancing end, and that the cliché and the binder section of the workpiece are each simultaneously moved out of contact with each other at a rotatingly lagging end, so that the binder is transferred to the entire binder section by means of the cliché. It may be advantageous for the cliché angular velocity to be varied over the cycle length by means of the control unit or the cliché cylinder drive.

[0037] Another embodiment of the method is based on dividing the cycle time into a cliché engagement section and a follow-up section. Preferably, in the cliché engagement section, a binder transfer takes place from the cliché to the binder section of the workpiece. In contrast, preferably in the immediately following follow-up section, the respective binder section is removed from a binder-transferring area of ​​the cliché or the cliché cylinder for further processing of the workpiece by means of the counter-pressure cylinder. It has proven particularly advantageous if the cliché cylinder has a movement profile such that the cliché angular velocity of the cliché cylinder is reduced in at least one deceleration phase and / or increased in at least one acceleration phase, at least within the cliché engagement section and / or within the follow-up section.

[0038] A deceleration or acceleration phase begins when an acceleration or deceleration value, as the derivative of rotational speed or angular velocity with respect to time, assumes a non-zero value and ends when the respective acceleration or deceleration value reaches zero. Within the scope of this invention, deceleration and acceleration phases are also collectively referred to as motion phases.

[0039] Advantageously, the control unit can be provided with a user interface and / or be connectable to a user interface. One embodiment of the invention provides that at least workpiece parameters, in particular the application length of the binder section of the workpiece, can be entered into the control unit via the user interface. The control unit is preferably designed such that, by means of a processing unit, it calculates a motion profile for the printing cylinder based on the entered workpiece parameters and further production and machine parameters. The motion profile can, in particular, include at least one acceleration phase and / or one deceleration phase.

[0040] The computing unit can be designed as an integral component of the control unit, the binder application station, or the device comprising the binder application station for producing bags from workpieces. Alternatively, the computing unit can be arranged decentrally and connected to the control unit via a data connection, in particular a network connection.

[0041] In particular, it is within the scope of the invention that the motion profile describes a sequence of the respective movement phases of the printing plate cylinder for a given cycle length, wherein this motion profile is repeatedly applied, in particular for all successive cycles. It can also be provided that the motion profile specifies a sequence of the respective movement phases of the printing plate cylinder over several successive cycle lengths.

[0042] It may also be provided that the cliché cylinder drive is controlled by the control unit with a higher-level motion profile consisting of several successive motion profiles.

[0043] In particular, it may be provided that the production and machine parameters, analogous to the workpiece parameters, can be entered into the control unit via the user interface and / or stored in a data storage device connected or connectable to the control unit.

[0044] The data storage device can be an integral element of the control unit, the binder application station, or the device for producing bags from workpieces, which includes the binder application station. Alternatively, the data storage device can be arranged decentrally, in particular as a network data storage device or a cloud, and be connected to the control unit via a data connection, in particular a network connection.

[0045] To optimize the process, a particular embodiment of the invention provides that the control unit, in conjunction with at least one data storage device, analyzes the workpiece parameters entered via the user interface using a neural network trained with motion parameters, in particular motion profiles and workpiece, production and machine parameters, in order to determine optimized motion profiles.

[0046] Preferably, the cliché cylinder drive is controlled by the control unit according to the optimized motion profile and / or the control unit provides the optimized motion profile to an operator for selection and / or adjustment, in particular by displaying it. According to a further embodiment, the neural network is trained on the basis of at least one preprocessed training data set. Advantageously, the neural network learns to determine at least optimized motion profiles for the drive of the cliché cylinder based on corresponding historical data stored in the training data set.

[0047] An advantageous training method is further provided alternatively or additionally by performing a process and / or quality evaluation of the respective binder application on the workpiece following the application of the binder. The process and / or quality evaluation can advantageously include an assessment of the accuracy of the binder transfer, particularly its application to the binder section, or a statement regarding dimensional accuracy or conformity to the format. Advantageously, this process and / or quality evaluation is stored as a training data set for training the neural network, along with a logical link between the respective motion parameters, especially motion profiles, and the respective workpiece, production, and machine parameters.In practice, it is particularly advantageous to create such a training data set regularly, especially after each binder application and / or within a special training phase.

[0048] For the purpose of training the neural network, it can be particularly advantageous to continuously perform a process and / or quality evaluation of the respective binder application to the workpiece during the ongoing production process following each binder application. According to this particularly preferred embodiment of the invention, the neural network is continuously trained by means of a logical link between this process and / or quality evaluation and the respective motion parameters, in particular motion profiles, and the respective workpiece, production, and machine parameters. Here, too, the process and / or quality evaluation can advantageously include an assessment of the accuracy of the binder transfer, particularly its application to the binder section as exclusively as possible, or a statement regarding the conformity of the format.

[0049] The problem underlying the invention is further solved by a control unit for computer-aided control of one of the aforementioned variants of the binder application stations and for computer-aided execution of one of the aforementioned embodiments of the method for applying the binder to the workpiece according to claim 22.

[0050] Furthermore, the problem underlying the invention is solved by a device for the production of workpieces according to claim 23 in that the device according to the invention comprises a binder application station according to one of the aforementioned embodiments and a control unit according to one of the aforementioned embodiments and is particularly suitable for use in one of the aforementioned embodiments of the method.

[0051] Further advantages, features, and details of the invention will become apparent from the following description, in which various exemplary embodiments are explained in detail with reference to the figures. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination thereof. Within the scope of the entire disclosure, features and details described in connection with the method according to the invention naturally also apply in connection with the devices according to the invention, and vice versa, so that the disclosure always makes, or can make, reciprocal references to the individual aspects of the invention.

[0052] The individual figures show:

[0053] Fig. 1 a schematic representation of a binder application station, Fig. 2 a reduced representation of a first incomplete variant of a binder application station,

[0054] Fig. 3 shows a reduced representation of a section of the second incomplete variant binder application station.

[0055] Fig. 4 shows a first schematic motion diagram of a cliché cylinder and a counter-pressure cylinder within one stroke.

[0056] Fig. 5 shows a second schematic movement diagram of the cliché cylinder and the counter-pressure cylinder within one stroke.

[0057] Fig. 6 shows a third schematic motion diagram of a cliché cylinder and a counter-pressure cylinder within one stroke.

[0058] Fig. 7 shows a fourth schematic motion diagram of a cliché cylinder and a counter-pressure cylinder within one stroke and

[0059] Fig. 8 shows a schematic representation of a method for applying binder to a workpiece in the correct format.

[0060] In the various figures of the drawing, identical parts are always labelled with the same reference symbols.

[0061] For the following description, it is claimed that the invention is not limited to the exemplary embodiments and not to all or several features of the described combinations of features, but that each individual partial feature of the exemplary embodiment(s) is also significant for the subject matter of the invention independently of all other partial features described in connection therewith and also in combination with any features of another exemplary embodiment.

[0062] Fig. 1 shows a binder application station 1 for the format-compliant application of binder 2 onto workpieces 7 during the production of bags. As shown in Fig. 1, the binder application station 1 has a binder housing 4 to which the binder 2, e.g., glue and / or adhesive, is supplied via a feed line 6. Advantageously, the binder level in the binder housing 4 is kept as constant as possible, which can be achieved, for example, by means of at least one level sensor (not shown) and a controllable binder supply via the feed line.

[0063] According to the variant shown in Fig. 1, the binder 2 can be taken from the binder housing 4 by means of an application roller 8 and applied to a cliché 10 of a cliché cylinder 12. The cliché 10 can advantageously be arranged reversibly on a cylindrical surface 13 of the cliché cylinder 12. The binder application station 1 further comprises a metering roller 14, with which the quantity of the binder 2 taken from the binder housing 4 by the application roller 8 can be adjusted. The quantity of binder is advantageously adjusted by selecting a radial position of the application roller 8 relative to the metering roller 14 and the cliché cylinder 12, or by the respective radial distances between them.

[0064] The application roller 8 and the metering roller 14 rotate in the same direction, in particular clockwise and counter to a direction of rotation 18 of the cliché cylinder 12, as shown by the arrows 16 in Fig. 1. During the transfer of the binder 2 from the cliché cylinder 12 to the workpiece 7, the workpiece 7 is guided between the cliché cylinder 12 and a counter-pressure cylinder 20.

[0065] In particular, the counter-pressure cylinder 20 can be driven by means of a drive unit 22 to rotate clockwise in the opposite direction 18 to the direction of rotation 18 of the cliché cylinder 12, as indicated by arrow 24 in Fig. 1. The drive unit 22 is shown schematically in Fig. 1 in an advantageous embodiment, in which the drive unit 22 is designed such that at least the counter-pressure cylinder 20, and in particular also the application roller 8 and / or the metering roller 14 together with the counter-pressure cylinder 20, can be driven by the drive unit 22. For this purpose, a belt and / or chain and / or gear or transmission connection can advantageously be provided, which transmits a driving force to the respective application and / or metering roller 14 and the counter-pressure cylinder 20. Figs. 2 and 3 show an advantageous embodiment with a belt connection 28 guided over a support device 26 of the binder application station 1.

[0066] It is within the scope of the invention that the cliché cylinder 12 and / or the counter-pressure cylinder 20 are formed in one piece or, as shown in Fig. 2, in multiple parts, preferably in two parts, from coaxially arranged partial cylinders.

[0067] It is provided that the counter-pressure cylinder 20 can be driven by the drive unit 22 at a cycle angular velocity. An exemplary movement profile 52 of the counter-pressure cylinder over a cycle length T is shown in Figures 4 to 7.

[0068] According to the invention, the binder application station 1 has a cliché cylinder drive 32 that can be controlled by a control unit 30, and this cliché cylinder drive 32 is designed such that the cliché cylinder 12 can be driven rotaryally by means of the cliché cylinder drive 32. The cliché cylinder drive 32 is further designed such that the cliché angular velocity of the cliché cylinder 12 can be adjusted by means of the control unit 30, at least independently of the cycle angular velocity of the counter-pressure cylinder 20. In particular, it can be advantageously provided that the adjustment or setting of the cliché angular velocity can be carried out during ongoing production.

[0069] In Fig. 1, the control unit 30 is shown by way of example as a computer. Advantageously, the control unit 30 can alternatively be arranged or configured as an integral element at the binder application station 1 and / or at a device comprising the binder application station 1 for producing bags from workpieces. It can also be provided that the control unit 30 itself is controllable by another control unit 30. For example, another control unit 30 can be a control unit 30 that is configured at the device for producing bags from workpieces comprising the binder application station 1, and / or a mobile device, such as a computer or a mobile phone.

[0070] Advantageously, the control unit 30 may have a user interface 34 and / or be connectable to a user interface 34. Preferably, an operator may use an input device 36 of the user interface to make settings, in particular the cliché angular velocity of the cliché cylinder 12, and / or display settings and / or parameters, for example, movement parameters of the respective rollers or cylinders and / or workpiece parameters and / or production and machine parameters, preferably in real time, on a display device 38. In particular, the computer designed as the control unit 30 in Fig. 1 may expediently also be designed as a user interface 34 with a display device 38 and an input device 36.

[0071] Advantageously, the cliché cylinder drive 32 can be designed as an electric motor that can be controlled via the control unit 30. This variant is shown in particular in Figures 2 and 3. The electric motor is advantageously designed such that it can provide rotation or torque about a drive axis 40 for driving the cliché cylinder 12. The rotation or torque about the drive axis 40 is shown by way of example in Figure 1.

[0072] According to an advantageous embodiment of the invention shown in Fig. 1, the drive shaft 40 of the electric motor is arranged parallel to a rotary axis 42 of the printing cylinder 12. This embodiment particularly prevents wear and has a higher efficiency compared to known variants with mechanical reversing gears.

[0073] Figures 2 and 3 show that the electric motor is preferably arranged in a fixed position on the support structure 26 of the binder application station 1. According to a further developed embodiment shown in Figure 3, the electric motor is connected to the printing cylinder 12 by means of a parallel crank drive 27 such that, during the drive of the printing cylinder 12 by the electric motor, the drive axis 40 of the electric motor and the axis of rotation 42 of the printing cylinder 12 can be arranged parallel to each other but radially offset from each other. Particularly advantageous results were achieved with a parallel coupling drive designed as a Schmidt coupling.This variant is particularly advantageous in order to be able to position the cliché cylinder 12 in a limited radial space, as is particularly advantageous for providing an empty position of the cliché cylinder 12 that can be assumed at least temporarily and is distinguishable from an engagement position of the cliché cylinder 12.

[0074] As illustrated, for example, in Figures 4 to 7, a particular embodiment of the invention is based on the finding that the application of the binder 2 to the workpiece 7 can be further improved by designing the cliché cylinder drive 32 such that the cliché angular velocity of the cliché cylinder 12 can be varied independently of the indexing angular velocity of the counter-pressure cylinder 20 by means of the control unit 30 during ongoing production. A particularly advantageous embodiment has proven to be one in which motion parameters, such as acceleration and / or deceleration and / or motion profiles comprising a sequence of acceleration and / or deceleration phases, are adjustable.

[0075] Advantageously, the positions of the application roller 8 and the metering roller 14, and of the printing cylinder 12 and the counter-pressure cylinder 20, can be determined radially relative to each other, as shown in Fig. 1, by means of spacer devices 44 designed such that the radial positions of the application roller 8 and the metering roller 14, and of the printing cylinder 12 and the counter-pressure cylinder 20, relative to each other, can be adjusted for setting the amount of binder, in particular by means of spindles. Fig. 2 shows an example of a spacer device 44 for the counter-pressure cylinder 20, and Fig. 3 shows an example of a spacer device 44 for the printing cylinder 12. According to an optional embodiment (not shown), the spacer devices 44 have at least partially motorized drives, in particular electric motors, for setting the respective radial positions, which can be controlled in particular by means of the control unit 30.

[0076] A particular embodiment, shown in Fig. 2, provides that the counter-pressure cylinder 20 can be reversibly moved, by means of a motor-driven first spacer device 46, from an engagement position, in which the workpiece 7 can be clamped between the counter-pressure cylinder 20 and the cliché cylinder 12, to an idle position, in which a gap is formed between the counter-pressure cylinder 20 and the cliché cylinder 12, in a direction away from the cliché cylinder 12. Advantageously, the gap is designed such that no transfer of adhesive from the cliché 10 to the counter-pressure cylinder 20 occurs when the counter-pressure cylinder 20 is not guiding a workpiece 7.

[0077] Alternatively or additionally, it may also be provided that by means of a method shown in Fig.

[0078] In the second spacer device 48 shown in Figure 3, which is driven by a motor, the cliché cylinder 12 can be reversibly moved from an engagement position to an idle position in a direction away from the counter-pressure cylinder 20. In this variant with the second spacer device 48, it is also provided that in the engagement position the workpiece 7 can be clamped between the counter-pressure cylinder 20 and the cliché cylinder 12, and that in the idle position a radial gap is formed between the counter-pressure cylinder 20 and the cliché cylinder 12 such that no binder transfer from the cliché 10 to the counter-pressure cylinder 20 occurs when the counter-pressure cylinder 20 is not guiding a workpiece 7.

[0079] In particular, Fig. 3 shows that the second spacer device 48 has a pneumatic drive, which can be controlled in particular by the control unit 30, and the first spacer device 46 can also preferably have a pneumatic drive. Fig. 8 shows a schematic representation of a method for applying binder 2 to workpieces 7 in a format-compliant manner during the production of bags. This method 100 provides in particular a binder application station 1, which is preferably designed according to one of the aforementioned embodiments.

[0080] In process step 110, the binder 2 held in the binder housing 4 is taken from the binder housing 4 by means of the application roller 8 and applied to the cliché 10 of the cliché cylinder 12. After the binder 2 has been taken from the binder housing 4 by means of the application roller 8, the quantity of binder 2 taken from the binder housing 4 by the application roller 8 is adjusted in process step 120 by means of the metering roller 14 in the manner described above.

[0081] In a further process step 130, the binder 2 is transferred from the cliché 10 to a binder section of the workpiece 7 in a format-appropriate manner. During the transfer of the binder 2 from the cliché 10 to the workpiece 7, the workpiece 7 is guided on a counter-pressure cylinder 20, which is driven in a circular motion by a drive unit 22 at a cycle angular velocity. This process step 130 is also preferably carried out in the manner described at the outset.

[0082] According to the invention, method 100 provides that the cliché cylinder 12 is driven rotaryally by means of a cliché cylinder drive 32 which can be controlled via a control unit 30. According to the invention, the cliché angular velocity of the cliché cylinder 12 is set by means of the control unit 30 at least independently of the cycle angular velocity of the counter-pressure cylinder 20.

[0083] An optional process variant provides that the counter-pressure cylinder 20 rotates at a constant angular velocity for at least a cycle length T. This variant is illustrated by way of example in Figures 4 to 7. The cycle length T essentially describes a period or distance between the planned start of the binder transfer to the binder section of a first workpiece 7 and the planned start of the binder transfer to the binder section of a second workpiece 7 immediately following in a production sequence P. The temporal cycle length T depends essentially on the angular velocity of the counter-pressure cylinder 20. The cycle length T and the production sequence P are shown in Figure 1.

[0084] Preferably, the cliché angular velocity of the cliché cylinder 12 is set independently of the cliché angular velocity of the counter-pressure cylinder 20 within this cycle length T.

[0085] The binder section of the workpiece 7 and the cliché 10 each have an application or cliché length, measured on the circumference of the counter-pressure cylinder 20 or on the circumference of the cliché cylinder 12.

[0086] A preferred embodiment of method 100 provides that the cliché angular velocity of the cliché cylinder 12 is adjusted relative to the indexing angular velocity of the counter-pressure cylinder 20 over the indexing length T such that the cliché 10 and the binder section of the workpiece 7 are each brought into mutual contact simultaneously with a rotatingly advancing end 7a, 10a, and wherein the cliché 10 and the binder section of the workpiece 7 are each simultaneously moved out of mutual contact with a rotatingly trailing end 7b, 10b. The rotatingly advancing end 7a of the binder section of the workpiece 7 and the rotatingly trailing end 7b of the binder section of the workpiece 7, as well as the rotatingly advancing end 10a of the cliché 10 and the rotatingly trailing end 10b of the cliché, are characterized in a simplified manner in Fig. 1 for illustration.This embodiment has the particular effect that the binder 2 is transferred to the entire binder section in a format-compliant manner by means of the cliché 10. Figures 4 to 7 show particularly preferred process variants in which the cliché angular velocity of the cliché cylinder 12 is varied relative to the indexing angular velocity of the counter-pressure cylinder 20 over the indexing length T.

[0087] In Figures 4 to 7, the stroke length T is conveniently plotted on a vertical Y-axis, and the cliché cylinder length, measured circumferentially to the cliché cylinder 12, is plotted on a horizontal X-axis. The cliché cylinder length describes, particularly when using two or more clichés on one cliché cylinder, the respective distance between the leading ends of the clichés. In the case of only one cliché on the cliché cylinder, the cliché cylinder length describes, in particular, the circumferential length of the cliché cylinder. A movement profile of the cliché cylinder is indicated in Figures 4 to 7 by reference numerals 50a, 50b, 50c, and 50d. Similarly, the respective movement of the impression cylinder is indicated in Figures 4 to 7 by reference numeral 52.

[0088] Preferably, the cycle length T is divided into a cliché engagement section 54 and a follow-up section 56 immediately following the cliché engagement section 54. Preferably, in the cliché engagement section 54, a binder transfer takes place from the cliché 10 to the binder section of the workpiece 7, and in the subsequent follow-up section 56, the respective binder section or the workpiece 7 is transported away from a binder-transferring area of ​​the cliché 10 or the cliché cylinder 12 for further processing of the workpiece 7 by means of the counter-pressure cylinder 20. Advantageously, a cylindrical surface 21 of the counter-pressure cylinder 20, on which the workpiece 7 is guided, rotates within the cliché engagement section 54 by a distance corresponding to the application length of the binder section of the workpiece 7.

[0089] In a preferred embodiment, the cliché cylinder 12 has a movement profile 50a, 50b, 50c, 50d such that the cliché angular velocity of the cliché cylinder 12 is reduced in at least one deceleration phase 58 and / or increased in at least one acceleration phase 60, at least within the cliché engagement section 54 and / or within the follow-up section 56.

[0090] In particular, a deceleration phase 58 or an acceleration phase 60 each begins with an acceleration value or a deceleration value as the derivative of the rotational speed or the angular velocity with respect to time assuming a value other than zero, and each ends with the respective acceleration value or deceleration value assuming a value equal to zero.

[0091] The trailing section 56 can in particular also be designed as a non-uniformity phase, wherein the motion profile 50a, 50b, 50c, 50d of the cliché cylinder 12 within the non-uniformity phase, as shown in Figs. 4 to 7, preferably has at least one deceleration phase 58 and / or at least one acceleration phase 60.

[0092] Figures 4 to 7 show preferred movement profiles 50a, 50b, 50c, 50d of the cliché cylinder 12, each in direct comparison to the movement 52 of the counter-pressure cylinder 20 or to the stroke specified by the counter-pressure cylinder 20.

[0093] The embodiments shown in Figures 4 and 5 represent a special case in which the cliché length of cliché 10 is shorter than the application length of the binder section of the workpiece 7. To ensure that the binder 2 is nevertheless completely transferred to the binder section with the longer application length by means of cliché 10 with the shorter cliché length, the cliché cylinder 12 can be driven with a particularly advantageous motion profile 50a, 50b, which is shown by way of example in Figures 4 and 5. However, other motion profiles deviating from those 50a, 50b shown in Figures 4 and 5 are also possible within the scope of the invention.

[0094] Within the cliché engagement section 54, the movement profile 50a, 50b comprises a cliché angular velocity that is on average lower than the indexing angular velocity of the counter-pressure cylinder 20. The ratio of cliché length and cliché angular velocity to application length and indexing angular velocity is selected such that at point A, the cliché 10 and the binder section of the workpiece 7 are each brought into mutual contact simultaneously with the rotatingly advancing end 7a, 10a, and at point B, the cliché 10 and the binder section of the workpiece 7 are each simultaneously moved out of mutual contact with a rotatingly trailing end 7b, 10b. The shorter cliché length is advantageously compensated for by a lower cliché angular velocity, so that the binder 2 can be transferred to the entire binder section in a format-compliant manner by means of the cliché 10.

[0095] Fig. 4 shows a special embodiment in which the cliché cylinder 12 has a constant cliché angular velocity within the cliché engagement section 54.

[0096] Fig. 5 shows an alternative embodiment in which the movement profile 50b of the cliché cylinder 12 within the cliché engagement section 54 initially has a lower cliché angular velocity than, for example, in the movement profile 50a shown in Fig. 4. However, the movement profile 50b of the cliché cylinder 12 within the cliché engagement section 54 has an acceleration phase 60, so that here too, a format-compliant binder transfer has taken place at the end of the cliché engagement section 54.

[0097] To ensure that at the end of the cycle and at the beginning of the next cycle of the workpiece immediately following in the production sequence P, the rotatingly advancing end of the cliché 10 and the rotatingly advancing end of the binder section are simultaneously brought back into contact, it is advantageously provided that within the trailing section 56, in which no binder transfer takes place, the cliché cylinder 12 compensates for any overrun 62 caused by the lower cliché angular velocity within the cliché engagement section 54 by increasing its cliché angular velocity. In Figures 4 and 5, a trailing section 56 is advantageously provided for this purpose, which is preferably designed as a non-uniformity phase.

[0098] According to the advantageous motion profile 50a in Fig. 4, the cliché cylinder 12 is initially accelerated in an acceleration phase 60 at the beginning of the trailing section 56, so that the trailing movement 62 of the cliché cylinder 12 relative to the counter-pressure cylinder 20 is balanced from point C onwards. Due to the higher cliché angular velocity of the cliché cylinder 12 at point C compared to the counter-pressure cylinder 20, the cliché cylinder 12 transitions into a leading movement 64 relative to the counter-pressure cylinder 20. To ensure that the respective leading ends 7a, 10a of the cliché 10 and the binder section can be brought back into simultaneous engagement at the end of the cycle or at the end of the trailing section 56 and at the beginning of the cycle P following in the production sequence, a deceleration phase 58 follows the acceleration phase 60, so that the respective ends are synchronously aligned with each other at point D.

[0099] Alternatively, the preferred motion profile 50b shown in Fig. 5 provides that the cliché cylinder 12 transitions into the deceleration phase 58 at the beginning of the follow-up section 56 and reduces the cliché angular velocity. At point C, where the follow-up 62 of the cliché cylinder 12 relative to the counter-pressure cylinder 20 is balanced, the cliché angular velocity is already decelerated, in contrast to the alternative motion profile 50a of the cliché cylinder 12 shown in Fig. 4. However, in the motion profile 50b of the cliché cylinder 12 shown in Fig. 5, the cliché cylinder 12 also transitions into the lead-in 64 relative to the counter-pressure cylinder 20 due to the higher cliché angular velocity of the cliché cylinder 12 relative to the counter-pressure cylinder 20 towards point C, with the deceleration phase 58 being adapted so that at the end of the cycle, or rather,at the end of the trailing section 56 and at the beginning of the following cycle in the production sequence P, the respective leading ends 7a, 10a of the cliché 10 and of the binder section can be brought back into simultaneous engagement, so that the respective ends are aligned synchronously with each other at point D.

[0100] It is within the scope of the invention that the movement profile 50c, 50d of the cliché cylinder 12 is also adapted or adaptable for the special case where the cliché length of the cliché 10 is greater than the application length of the binder section of the workpiece 7. In order for the binder 2 to be completely transferred to the binder section with the shorter application length by means of the cliché 10 with the longer cliché length, the cliché cylinder 12 can be driven with particularly advantageous movement profiles, for example, with the movement profiles 50c, 50d shown in Figures 6 and 7. Furthermore, in accordance with the invention, other movement profiles deviating from those 50c, 50d shown in Figures 6 and 7 are conceivable.

[0101] The motion profile 50c, 50d within the cliché engagement section 54 comprises an average cliché angular velocity that is greater than the indexing angular velocity of the counter-pressure cylinder 20. The ratio of cliché length and cliché angular velocity to application length and indexing angular velocity is selected such that at point E, the cliché 10 and the binder section of the workpiece 7 are each brought into mutual contact with their rotating ends 7a, 10a simultaneously, and at point F, the cliché 10 and the binder section of the workpiece 7 are each simultaneously moved out of mutual contact with their rotating trailing ends. The greater cliché length is advantageously compensated for by a higher cliché angular velocity, so that the binder 2 can be transferred to the entire binder section in a format-compliant manner by means of the cliché 10.

[0102] Fig. 6 shows a particular embodiment in which the cliché cylinder 12 has a constant cliché angular velocity within the cliché engagement section 54. Fig. 7 shows an alternative embodiment in which the movement profile 50d of the cliché cylinder 12 within the cliché engagement section 54 initially exhibits a higher cliché angular velocity than is the case, for example, with the movement profile 50c shown in Fig. 6. However, the movement profile 50d of the cliché cylinder 12 within the cliché engagement section 54 includes a deceleration phase 58, so that, here too, a format-compliant binder transfer has taken place at the end of the cliché engagement section 54.

[0103] To ensure that at the end of the cycle and at the beginning of the next cycle of the workpiece immediately following in the production sequence P, the rotatingly advancing end of the cliché 10 and the rotatingly advancing end of the binder section are brought back into simultaneous contact, it is advantageously provided that within the trailing section 56, in which no binder transfer takes place, the cliché cylinder 12 reduces the lead-in 64 caused by the higher cliché angular velocity within the cliché engagement section 54 by reducing the cliché angular velocity. For this purpose, a trailing section 56 is advantageously provided in Figures 6 and 7, which is preferably designed as a non-uniformity phase.

[0104] According to the advantageous motion profile 50c in Fig. 6, the cliché cylinder 12 is initially decelerated in a deceleration phase 58 at the beginning of the follow-up section 56, so that the advance 64 of the cliché cylinder 12 relative to the counter-pressure cylinder 20 is balanced from point G onwards. Due to the lower cliché angular velocity of the cliché cylinder 12 relative to the counter-pressure cylinder 20 at point G, the cliché cylinder 12 transitions into the follow-up 62 relative to the counter-pressure cylinder 20. To ensure that the respective leading ends 7a, 10a of the cliché 10 and the binder section can be brought back into simultaneous engagement at the end of the cycle or at the end of the follow-up section 56 and at the beginning of the cycle P following in the production sequence, an acceleration phase 60 follows the deceleration phase 58, so that the respective ends are synchronized with each other at point H.

[0105] Alternatively, the preferred motion profile 50d shown in Fig. 7 provides that the cliché cylinder 12 transitions into the acceleration phase 60 at the beginning of the follow-up section 56 and increases the cliché angular velocity. At point G, where the lead-up 64 of the cliché cylinder 12 to the counter-pressure cylinder 20 is balanced, the cliché angular velocity accelerates, in contrast to the alternative motion profile 50c of the cliché cylinder 12 shown in Fig. 6. In the motion profile 50d of the cliché cylinder 12 shown in Fig. 7, the cliché cylinder 12 also transitions into the follow-up 62 to the counter-pressure cylinder 20 due to the lower cliché angular velocity of the cliché cylinder 12 to the counter-pressure cylinder 20 at point G. The acceleration phase 60 is advantageously adapted so that at the end of the cycle, or...at the end of the trailing section 56 and at the beginning of the subsequent cycle P in the production sequence, the respective ends 7a, 10a of the cliché 10 and of the binder section can be brought back into simultaneous engagement, so that the respective ends are aligned synchronously with each other at point H.

[0106] In Figures 4 to 7, the indexing speed of the printing cylinder 12 is kept constant over the cycle length T. It is within the scope of the invention that the indexing speed can also be varied within a cycle length T, for example, during a start-up and / or shut-down process at the beginning or end of production, or as a result of an adjustment of the production speed. Advantageously, it can be provided that the motion profiles, in particular by means of the control unit 30, are automatically and dynamically adapted to the varying indexing speeds, or can be adapted to them.

[0107] It can be particularly advantageous to provide that, via the user interface 34, at least workpiece parameters, in particular the application length of the binder section of the workpiece 7, can be entered into the control unit 30 in a process step 140. The process 100 provides in particular that, by means of a suitably designed control unit 30 and a computing unit 155, a motion profile for the printing cylinder 12 is calculated in a process step 150 based on the entered workpiece parameters and further production and machine parameters. The production and machine parameters are expediently also entered via the user interface and / or retrieved by the control unit 30 from a data storage device and / or by another control unit 30, in particular the control unit 30 of the device comprising the binder application station 1 for the production of bags.

[0108] According to an optional embodiment, the control unit 30, by means of the computing unit and a data storage device, analyzes the workpiece parameters entered via the user interface 34 by means of a neural network 160 trained with motion parameters, in particular motion profiles and workpiece, production and machine parameters, in particular by means of a training data set 175, to determine optimized motion profiles and controls the cliché cylinder drive 32 according to the optimized motion profile and / or provides the optimized motion profile to an operator for selection and / or adjustment, in particular displays it.

[0109] Advantageously, following the application of a binder, particularly on a regular basis, preferably following each application of the binder to the respective workpiece 7, a process and / or quality evaluation of the respective binder application on the workpiece 7 is carried out, as indicated by step 170 in Fig. 8. In particular, an evaluation of format conformity is performed. This process and / or quality evaluation is stored as a training data set for training the neural network 160, with a logical linkage of the respective motion parameters, in particular motion profiles, and the respective workpiece, production, and machine parameters, as shown in Fig.

[0110] Figure 8 shows step 180. The training of the neural network 160 using the training data set stored in step 180 is indicated in Figure 8 by arrow 185.

[0111] Another advantageous variant of the method provides that, following the application of a binder to the respective workpiece 7, a process and / or quality evaluation of the respective binder application on the workpiece 7 is continuously carried out during the ongoing manufacturing process, in particular an evaluation of format conformity, and that the neural network 160 is continuously trained by means of a logical linkage of this process and / or quality evaluation with the respective movement parameters, in particular movement profiles, and the respective workpiece, production, and machine parameters. This advantageous training process, which runs simultaneously with production, is indicated by arrow 190 in Fig. 8.

[0112] The problem underlying the invention is further solved by a control unit 30 for the computer-aided control of one of the aforementioned variants of the binder application stations and for the computer-aided execution of one of the aforementioned embodiments of the method 100 for applying the binder 2 to the workpiece 7. Likewise, the invention comprises, to solve the same problem, a device for producing workpieces, wherein the device, according to the invention, comprises a binder application station 1 according to one of the aforementioned embodiments and a control unit 30 according to one of the aforementioned embodiments, and is particularly suitable for use in one of the aforementioned embodiments of the method 100.

[0113] The invention is not limited to the illustrated and described embodiments, but also encompasses all embodiments that have the same effect within the meaning of the invention. The embodiments are not limited to the combination of all features; rather, each individual partial feature can also have inventive relevance independently of all other partial features. Furthermore, the invention is not limited to the combination of features defined in the independent claims, but can also be defined by any other combination of specific features of all disclosed individual features. Consequently, each individual feature of the respective independent claims can be omitted and / or replaced by at least one individual feature disclosed elsewhere in the application. List of reference numerals

[0114] 1 binder application station

[0115] 2 binders

[0116] 4 binder housings

[0117] 6 Supply line

[0118] 7 Workpiece

[0119] 7a Leading end of the binder section of the workpiece

[0120] 7b Trailing end of the binder section of the workpiece

[0121] 8 Application roller

[0122] 10 clichés

[0123] 10a Preliminary end of the cliché

[0124] 10b Trailing end of the cliché

[0125] 12 cliché cylinders

[0126] 13 Surface area of ​​the cliché cylinder

[0127] 14 Metering roller

[0128] 16 Direction of rotation of the metering roller and the drive roller 18 Direction of rotation of the printing cylinder

[0129] 20 counter-pressure cylinders

[0130] 21 Surface area of ​​the counter-pressure cylinder

[0131] 22 Drive unit

[0132] 24 Direction of rotation of the counter-pressure cylinder

[0133] 26 Supporting institution

[0134] 27 Parallel crank gears

[0135] 28 Belt connection

[0136] 30 control unit

[0137] 32 cliché cylinder drive

[0138] 34 User interface

[0139] 36 Input device

[0140] 38 Display unit

[0141] 40 drive axle

[0142] 42 Rotation axis of the cliché cylinder

[0143] 44 Spacing decision 46 First spacing device

[0144] 48 Second spacer device

[0145] 50a, 50b, 50c, 50d Movement profile of the cliché cylinder

[0146] 52 Movement profile of the counter-pressure cylinder

[0147] 54. Stereotype Intervention Section

[0148] 56 Trailing section

[0149] 58 Delay phase

[0150] 60 Acceleration phase

[0151] 62 trail

[0152] 64 lead time

[0153] A First contact between cliché and binder section

[0154] B Separation of the cliché from the binder section C Balanced trail

[0155] D Synchronously aligned ends of the cliché and the binder section

[0156] E First contact between cliché and binder section

[0157] F Separation of the cliché from the binder section G Balanced lead-in

[0158] H Synchronously aligned ends of the cliché and the binder section

[0159] T bar length

[0160] P Production sequence

[0161] Y-axis clock

[0162] X-axis movement path of the cliché cylinder

[0163] 100 manufacturing processes

[0164] 110 Binder removal from the binder housing 120 Binder dosing

[0165] 130 Application of the binder to the workpiece 7

[0166] 140 Input of workpiece parameters

[0167] 150 Calculation of a movement profile 155 Calculation using a computing unit 160 Calculation using the neural network

[0168] 170 Process and / or quality assessment of the binder application

[0169] 175 Training the neural network with an existing training dataset

[0170] 180 Saving a custom training dataset

[0171] 185 Training the neural network with its own training dataset

[0172] 190 Training the neural network simultaneously with production

Claims

Windmöller & Hölscher SE & Co. KG Münsterstraße 50 49525 Lengerich / Westphalia Our reference number: 9593 WO - JK Binder application station Claims 1. Binder application station (1) for the format-compliant application of binder (2) onto workpieces (7) in the production of bags, with - a binder housing (4) that can be filled with binder (2), - an application roller (8) with which the binder (2) can be removed from the binder housing (4) and applied to a cliché (10) of a cliché cylinder (12), wherein the binder (2) can be transferred to the respective workpiece (7) in the correct format by means of the cliché (10), - a metering roller (14) with which the quantity of the binder (2) taken from the binder housing (4) by the application roller (8) can be adjusted, - a counter-pressure cylinder (20) on which the respective workpiece (7) can be guided during the transfer of the binder (2) from the cliché cylinder (12), and - with a drive device (22) with which at least the counter-pressure cylinder (20) can be driven rotaryally at a stroke angle speed, characterized by, a cliché cylinder drive (32) controllable by a control unit (30), whereby the cliché cylinder (12) can be driven in a rotating manner, wherein, by means of the control unit (30), in particular during ongoing production, a cliché angular velocity of the cliché cylinder (12) can be set at least independently of the indexing angular velocity of the counter-pressure cylinder (20).

2. Binder application station (1) according to claim 1 , characterized by the fact that The cliché cylinder drive (32) is designed as an electric motor controllable by the control unit (30), by means of which a rotation about a drive axis (40) can be provided to drive the cliché cylinder (12), wherein the drive axis (40) of the electric motor is arranged parallel to a rotation axis (42) of the cliché cylinder (12).

3. Binder application station (1) according to claim 2, characterized by the fact that the electric motor is fixedly arranged on a support device (26) and is connected to the cliché cylinder (12) by means of a parallel crank gear (27), in particular a Schmidt coupling, such that during the drive of the cliché cylinder (12) with the electric motor the drive axis (40) of the electric motor and the axis of rotation (42) of the cliché cylinder (12) can be arranged parallel to each other and radially offset from each other.

4. Binder application station (1) according to one of the preceding claims, characterized by the fact that The cliché cylinder drive (32) is designed such that the cliché angular velocity of the cliché cylinder (12) can be varied during ongoing production independently of the cycle angular velocity of the counter-pressure cylinder (20) by means of the control unit (30), wherein, in particular, motion parameters such as acceleration and / or deceleration and / or motion profiles (50a, 50b, 50c, 50d), which comprise a sequence of acceleration phases (60) and / or deceleration phases (58), are adjustable.

5. Binder application station (1) according to one of the preceding claims, characterized by the fact that the drive device (22) is designed such that at least the counter-pressure cylinder (20) and in particular together with the counter-pressure cylinder (20) also the application roller (8) and / or the metering roller (14) can be driven by the drive device (22) by means of a belt connection (28) and / or chain connection and / or gear connection or transmission connection.

6. Binder application station (1) according to claim 1 , characterized by the fact that a radial positioning of the application roller (8) and the metering roller (14) and the cliché cylinder (12) and the counter-pressure cylinder (20) relative to each other can be determined by means of spacer devices (44) designed in this way, and the radial positions of the application roller (8) and the metering roller (14) and the cliché cylinder (12) and the counter-pressure cylinder (20) relative to each other can be adjusted, in particular by means of spindles, to adjust the amount of binder that can be removed from the binder housing (4) and / or transferred to the cliché (10).

7. Binder application station (1) according to claim 6, characterized by the fact that the spacing device (44) shall at least partially have motor drives, in particular electric motors, for adjusting the respective radial position, which can be controlled in particular by means of the control unit (30).

8. Binder application station (1) according to one of the preceding claims, characterized by the fact that by means of a motor-driven first spacer (46) the counter-pressure cylinder (20) is moved from an engagement position, in which the workpiece (7) can be clamped between the counter-pressure cylinder (20) and the cliché cylinder (12), into an idle position in which a radial gap is formed between the counter-pressure cylinder (20) and the cliché cylinder (12) such that, when the counter-pressure cylinder (20) does not guide a workpiece (7), no binder transfer from the cliché (10) to the counter-pressure cylinder (20) takes place, and / or is reversibly movable by means of a motor-driven second spacer (48) the cliché cylinder (12) is moved from an engagement position, in which the workpiece (7) can be clamped between the counter-pressure cylinder (20) and the cliché cylinder (12), into an idle position in a direction away from the counter-pressure cylinder (20).in which a radial gap is formed between the counter-pressure cylinder (20) and the cliché cylinder (12) such that, when the counter-pressure cylinder (20) does not guide a workpiece (7), no binder transfer from the cliché (10) to the counter-pressure cylinder (20) takes place, and when the counter-pressure cylinder (20) does not guide a workpiece (7), it is reversibly movable.

9. Binder application station (1) according to claim 8, characterized by the fact that the first and / or second spacing device (46, 48) has a pneumatic drive, which can be controlled in particular by the control unit (30).

10. Method (100) for applying binder (2) to workpieces (7) in the correct format in the production of bags by means of a binder application station (1), in particular according to one of claims 1 to 9, - in which a binder (2) held in a binder housing (4) is taken from the binder housing (4) by means of an application roller (8) and applied (110) to a cliché (10) of a cliché cylinder (12), - in which a quantity of binder (2) taken from the binder housing (4) by the application roller (8) is set (120) by means of a metering roller (14), - in which the binder (2) is transferred from the cliché (10) to a binder section of the workpiece (7) in a format-appropriate manner, wherein the workpiece (7) is guided onto a counter-pressure cylinder (20) during the transfer of the binder (2) from the cliché (10) to the workpiece (7), which is rotaryally driven by a drive device (22) at a cycle angular velocity (130), characterized in that the cliché cylinder (12) is driven rotaryally by means of a cliché cylinder drive (32) which can be controlled by a control unit (30), wherein a cliché angular velocity of the cliché cylinder (12) is set via the control unit (30) at least independently of the stroke angular velocity of the counter-pressure cylinder (20).

11. Method (100) according to claim 10, characterized by the fact that that the counter-pressure cylinder (20) rotates at a constant cycle angular velocity for at least a cycle length (T) which describes a period and / or a distance between a planned start of the binder transfer to the binder section of a first workpiece (7) and the planned start of the binder transfer to the binder section of a second workpiece (7) immediately following in a production sequence (P), wherein the cliché angular velocity of the cliché cylinder (12) is set / is set within this cycle length (T) independently of the cycle angular velocity of the counter-pressure cylinder (20). 12 methods (100) according to claim 11, characterized by the fact that the binder section of the workpiece (7) has an application length measured circumferentially to the counter-pressure cylinder (20) and the cliché (10) has a cliché length measured circumferentially to the cliché cylinder (12), wherein the cliché angular velocity of the cliché cylinder (12) is adjusted relative to the indexing angular velocity of the counter-pressure cylinder (20) over the indexing length (T) such that the cliché (10) and the binder section of the workpiece (7) are each brought into mutual contact with a rotatingly leading end (7a, 10a) simultaneously (A, E) and wherein the cliché (10) and the binder section of the workpiece (7) are each brought out of mutual contact with a rotatingly trailing end (7b, 10b) simultaneously (B, F).so that the binder (2) is transferred to the entire binder section by means of the cliché (10). Method (100) according to claim 11 or 12, characterized by the fact that The cycle length (T) is divided into a cliché engagement section (54) and a follow-up section (56), wherein in the cliché engagement section (54) a binder transfer takes place from the cliché (10) to the binder section of the workpiece (7), and in the immediately following follow-up section (56) the respective binder section is transported away from a binder-transferring area of ​​the cliché (10) or the cliché cylinder (12) for further processing of the workpiece (7) by means of the counter-pressure cylinder (20), wherein the cliché cylinder (12) has such a movement profile (50a, 50b, 50c, 50d) that the cliché angular velocity of the cliché cylinder (12) is reduced at least within the cliché engagement section (54) and / or within the follow-up section (56) in at least one deceleration phase (58) and / or in at least one acceleration phase. (60) is increased. Method (100) according to claim 13, characterized in that the cliché cylinder (12) has such a movement profile (50a, 50b, 50c, 50d) that at the end of the cliché engagement section (54) the cliché cylinder (12) has a lead (64) or a trail (62) relative to the counter-pressure cylinder (20) and compensates for this lead (64) or trail (62) by means of at least one acceleration phase (60) and / or at least one deceleration phase (58) such that at the end of the cycle or at the end of the trail section (56) and at the beginning of the cycle following in the production sequence (P) the respective leading ends (7a, 10a) of the cliché (10) and the binder section can be brought back into engagement simultaneously, in particular are aligned synchronously with each other (D, H). 15 methods (100) according to claim 14, characterized by the fact that the cliché cylinder (12) has such a movement profile (50a, 50b, 50c, 50d) that the cliché cylinder (12) transitions in the follow-up section (56) from a lead-in (64) relative to the counter-pressure cylinder (12) to a follow-up (62) relative to the counter-pressure cylinder (12) and / or that the cliché cylinder (12) transitions in the follow-up section (56) from a follow-up (62) relative to the counter-pressure cylinder (12) to a lead-in (64) relative to the counter-pressure cylinder (12).

16. Method (100) according to any one of claims 10 to 15, characterized by the fact that via a user interface (34) at least workpiece parameters, in particular the application length of the binder section of the workpiece (7), can be entered into the control unit (30) (140), wherein the control unit (30) calculates a motion profile (50a, 50b, 50c, 50d) for the cliché cylinder (12) on the basis of the entered workpiece parameters and other production and machine parameters by means of a computing unit (155) (150).

17. Method (100) according to claim 16, characterized in that The control unit (30) uses the computing unit and a data storage device to analyze the workpiece parameters entered via the user interface (34) using a neural network (160) trained with motion parameters, in particular motion profiles and workpiece, production and machine parameters, to determine optimized motion profiles and controls the cliché cylinder drive (32) according to the optimized motion profile and / or provides the optimized motion profile to an operator for selection and / or adjustment, in particular by displaying it.

18. Method (100) according to claim 17, characterized by the fact that the neural network (160) is trained using at least one pre-processed training data set, wherein the neural network learns (175) to determine optimized motion profiles for the cliché cylinder drive (32) based on historical data stored in the training data set.

19. Method (100) according to claim 17 or 18, characterized by the fact that Following the application of a binder, in particular regularly repeating, preferably following each application of a binder to the respective workpiece (7), a process and / or quality assessment of the respective binder application to the workpiece (7) is carried out (170), in particular an assessment of format conformity, and this process and / or quality assessment is stored with a logical link of the respective motion parameters, in particular motion profiles and the respective workpiece, production and machine parameters as a training data set for training the neural network (160) (180).

20. Method (100) according to one of claims 17 to 19, characterized in that continuously throughout the ongoing manufacturing process following the application of a binder to the respective workpiece (7), a process and / or quality assessment of the respective binder application to the workpiece (7) is carried out (170), in particular an assessment of format conformity, and the neural network is continuously trained by means of a logical linking of this process and / or quality assessment with the respective motion parameters, in particular motion profiles and the respective workpiece, production and machine parameters (190).

21. Method (100) according to any one of claims 10 to 20, characterized by the fact that the method (100) is carried out by means of a binder application station (1) according to one of claims 1 to 9.

22. Control unit (30) for computer-aided execution of the method (100) according to one of claims 10 to 21 with a binder application station (1) according to one of claims 1 to 9.

23. Device for producing bags from workpieces, in particular in a method (100) according to one of claims 10 to 21, which has a binder application station (1) according to one of claims 1 to 9 and a control unit 30 according to claim 22.

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