Device for treating substrates

Abstract

Device for treating arc-shaped substrates (1) with a separation device (2) by which the processed substrate (1) can be separated into at least one waste part (9) and at least one usable portion (10), wherein the separation device (2) comprises a transport cylinder (3) with a suction gripper system (17) having at least one suction opening for fixing the leading edge of the substrate (1) and a stripping cylinder (4) associated with the transport cylinder (3), and the transport cylinder (3) and alternatively also the stripping cylinder (4) having means for fixing an interchangeable lift (5), wherein means for feeding the interchangeable lift (5) are associated with the transport cylinder (3) and alternatively also the stripping cylinder (4), wherein the transport cylinder (3) has openings (12, 13) spaced apart from the at least one suction opening, which, when the lift (5) is fixed, correspond at least partially to openings formed in the lift (5), wherein the openings (12,13) Air supply means (14, 15) for supplying the openings (12, 13) with air and the at least one suction opening of the suction gripper system (17) are further air supply means assigned which supply the at least one suction opening with air independently of the openings (12, 13) and wherein the at least one suction opening for fixing the front edge of the substrate (1) is arranged such that, when the lift (5) is fixed, it is spaced apart in the circumferential direction of the transport cylinder (3) from the lift (5).

Description

[0001] The invention relates to a device for treating substrates, comprising a separating device with which the processed substrate can be separated into at least one waste part and at least one blank. Substrates are understood to be, in particular, sheet-shaped substrates that are preferably printable or printed. Such substrates are processed by one or more processing steps, such as printing and / or coating and / or varnishing and / or cutting and / or punching and / or embossing and / or creasing and / or perforating.

[0002] DE 103 56 405 A1 discloses a device for finishing processes, e.g., cutting, punching, embossing, foil transfer, and / or coating, of printed paper, cardboard, cardboard packaging, corrugated cardboard, and plastics using a rotating process. In this process, the substrate can be inserted in the feed direction between a rotating counterpressure processing roller and a rotating processing roller and undergoes processing as it passes through tool parts operating in the working gap. A delivery conveyor belt for form-free substrates, which is aligned approximately horizontally, is arranged directly downstream of the processing roller. The device is designed exclusively for processing web-shaped substrates.

[0003] DE 103 56 413 A1 discloses a device for the finishing processing of printed paper or similar web-like substrates by means of a rotation process, in which the substrate can be inserted in the feed direction between a rotating counterpressure processing roller and a rotating processing roller and is processed as it passes through tool parts acting in the working gap. The counterpressure processing roller is essentially arranged next to a processing roller, and a delivery conveyor belt for form-free substrates, which is aligned approximately horizontally, is arranged directly downstream of the processing roller. The processing roller is double-sized and has grippers. The guidance of the substrates on the outer surface of the processing roller, in the areas spaced from the gripper, cannot be variably adjusted to different substrate formats.

[0004] DE 20 2004 018 764 U1 discloses a device for the finishing processing of printed and / or coated sheet-shaped substrates, in particular for punching, for example, by means of a rotation process, in which the substrate can be introduced in the feed direction between two rotating processing rollers and is processed as it passes through tool parts acting in the working gap, wherein a processing roller is provided with at least one gripper for register-correct transport of the sheet-shaped substrate and a gripper support or a gripper anvil is designed as a suspension cam for the tool part formed as a tool sheet.

[0005] The device is designed exclusively for use with tool plates that have recesses corresponding to suspension cams.

[0006] DE 10 2004 058 597 A1 shows a device for the finishing processing of printed sheet-shaped substrates by means of a rotary punching process, in which the substrate can be inserted between two rotating processing rollers and undergoes processing, wherein one processing roller has a gripper for a register-correct transport of the substrate and at certain positions of one of the processing rollers has puncture needles on the surface which receive waste cutouts.

[0007] The guidance of the substrates in the areas spaced from the gripper on the outer surface of the processing roller is carried out using a large number of mechanically moved individual parts and is susceptible to contamination.

[0008] From DE 10 2004 058 598 A1, a tool part in a device for the finishing processing of printed and / or coated sheet-shaped substrates, in particular for punching by means of a rotation process, is known, in which the substrate can be introduced between two rotating processing rollers and is processed as it passes through tool parts acting in the working gap, wherein a processing roller has a gripper for the register-correct transport of the substrate and the tool part profiled as a die has circumferential openings.

[0009] The tool part is complexly constructed and has not only profiles but also openings.

[0010] DE 10 2004 058 599 A1 discloses a device for the finishing processing of printed sheet-shaped substrates, printed paper, or the like, using a rotary punching process. In this process, the substrate can be inserted in the feed direction between two rotating processing rollers. The processing rollers have a gripper for register-correct transport of the substrate. Two additional processing rollers are assigned to the processing roller, one at the 12 o'clock position and the other at the 10 o'clock position.

[0011] The device is comparatively complex due to the large number of processing rollers.

[0012] DE 10 2004 058 600 A1 discloses a device for finishing printed sheet-shaped substrates with two processing rollers. Next to one of the processing rollers is an approximately horizontally aligned conveyor belt with a molded design.

[0013] DE 10 2004 058 601 A1 discloses a device for the finishing of printed sheet-shaped substrates with two processing rollers. A nearly horizontally aligned conveyor belt is arranged next to one of the processing rollers. The conveyor belt is supplied with suction air, and one of the processing rollers is supplied with blown air.

[0014] DE 10 2004 058 598 A1 discloses a device for finishing the front and / or back of sheet-shaped substrates by means of a rotation process, in which the substrate can be inserted between two rotating processing rollers and is processed as it passes through tool parts acting in the working gap.

[0015] DE 20 2004 018 764 U1 shows a device for finishing the front and / or back of sheet-shaped substrates by means of a rotation process, which device has a changing device for tool sheets.

[0016] From DE 101 47 486 A1 a punching or cutting device is known with a magnetic cylinder, a punching or cutting plate magnetically held on the magnetic cylinder, an impression cylinder associated with the magnetic cylinder and a suction device arranged next to the magnetic cylinder for sucking out punched or cut pieces of material.

[0017] The subject of DE 103 03 178 A1 is a punching and creasing counterpressure plate made of a metal sheet.

[0018] DE 10 2005 039 773 A1 discloses a so-called printing plate changer for feeding and / or removing printing plates to or from a cylinder of a printing press.

[0019] US 4 178 848 A describes a printing plate feeding device for an offset printing machine.

[0020] The invention is based on the object of creating a device for treating substrates that enables the separation of processed substrates into one or more waste parts and at least one use. In particular, the invention is based on the object of creating a device for treating substrates that has improved flexibility.

[0021] This object is achieved by a device which is designed according to the features of patent claim 1.

[0022] The advantages achievable with the invention are that an effective and / or safe separation of substrates into at least one waste part and at least one benefit is created while minimizing the mechanical expenditure required for this purpose.

[0023] A particularly advantageous feature of one embodiment of the invention is that the separating device treats already processed substrate, in particular separating it into at least one waste part and at least one blank. The substrate is processed by tool parts operating in the cylinder gap of two processing rollers arranged upstream of the separating device, in particular by cutting, punching, grooving, or perforating. By implementing the separation (also referred to as stripping) on ​​the one hand and the processing on the other hand at different locations, the functional stability of the device for treating substrates is increased.

[0024] It is also particularly advantageous that the design of two air supply means for the independent supply of the first and second openings in conjunction with the ability to switch between suction air supply and blowing air supply ensures safe transport of waste parts and / or useful parts and safe release at the designated locations.

[0025] In the case of a device for treating substrates with a gripper system for securing the leading edges of sheet-shaped substrates, which is designed as a suction gripper system, it is particularly advantageous that substrate sheets or waste parts referred to as grids can be transported safely until they are released at the designated locations. The suction gripper system is comparatively simple in design compared to mechanical gripper systems, in particular clamp grippers. The design of the suction gripper system for register-accurate transport can advantageously be omitted. In the latter device, it is further particularly advantageous that the suction gripper system is assigned to the means for securing the elevator, which includes the reverse case. This advantageously ensures that the number of moving parts is kept to a minimum.With minimal space requirements, the functions of securing the elevator and holding the leading edges of the sheet-shaped substrate or grids are implemented in a simple and reliable manner. In a preferred embodiment of the invention, the suction air required to operate the suction gripper system is already present at the transport cylinder and can also be advantageously used to hold waste parts and / or blanks on the outer surface of the transport cylinder.

[0026] In an embodiment of the device for treating substrates with a separating device comprising a transport cylinder to which a circulating conveyor belt is assigned, it is particularly advantageous that the conveyor belt safely receives the waste parts or blanks from the transport cylinder. If the conveyor belt is directly assigned to the transport cylinder and forms a transfer point or a transfer area with the transport cylinder, in particular in the form of a tangent point or a wrap angle, the conveyor belt can advantageously support the removal of the waste parts or blanks. The latter applies in particular if the conveyor belt is a suction belt. In the latter device, it is further particularly advantageous that the transfer of waste parts or blanks from the transport cylinder to the conveyor belt is achieved by applying blown air to the outer surface of the transport cylinder, ieThis is particularly supported at the openings of the elevator mounted on the transport cylinder. It is also advantageous if the transfer of waste parts or blanks from the transport cylinder to the conveyor belt is effected solely by the application of blast air to the outer surface of the transport cylinder, and the conveyor belt is not designed with openings exposed to suction air, i.e., as a suction belt.

[0027] In the case of a device for treating substrates with a separating device, which comprises a transport cylinder and a stripping cylinder assigned to the transport cylinder, to which a circulating conveyor belt is assigned, one advantage lies in the flexible usability of the device. If the conveyor belt is directly assigned to the stripping cylinder and forms a transfer point or a transfer area with the stripping cylinder, in particular in the form of a tangent point or a wrap angle, the conveyor belt can advantageously support the removal of the waste parts or blanks. The latter applies in particular if the conveyor belt is a suction belt. In the latter device, it is furthermore particularly advantageous that the transfer of waste parts or blanks from the stripping cylinder to the conveyor belt is achieved by applying blast air to the outer surface of the stripping cylinder, i.e.particularly at the openings of the elevator mounted on the transport cylinder. It is also advantageous if the transfer of waste parts or blanks from the stripping cylinder to the conveyor belt is effected solely by the application of blast air to the outer surface of the transport cylinder, and the conveyor belt is not designed with openings exposed to suction air, i.e., as a suction belt.

[0028] Embodiments of the invention are illustrated in the drawings and are described in more detail below.

[0029] They show: Fig. 1 a schematic representation of a sheet processing machine with a schematic representation of a device for treating substrates Fig. 2 the transport cylinder of the separating device Fig. 3 a detailed section of the transport cylinder in the area of ​​the cylinder channel with means for fixing the elevator in the closed state Fig. 4 a detailed section of the transport cylinder in the area of ​​the cylinder channel with means for fixing the elevator in the open state Fig. 5 first air supply means Fig. 6 second air supply means Fig. 7 the transport cylinder with air supply means Fig. 8 Air supply suction gripper system Fig. 9 transport cylinders with stripping cylinder Fig. 10 a detailed section of the breakout cylinder in the area of ​​the cylinder channel with means for fixing the elevator in the closed state Fig. 11 and Fig. 12. Transport cylinder with rotating suction belt Fig. 13 Stripping cylinders with circulating conveyor belt Fig. 14 and Fig. 15. Transport cylinder with rotating suction belt Fig. 16 Transport cylinders with means for feeding an elevator Fig. 17 a schematic representation of a sheet processing machine with schematic representation of a device for treating substrates The device for treating substrates 1 with a separating device 2, with which processed substrate 1 can be separated into at least one waste part 9 and at least one blank 10, can be designed as an independent machine and in this case has a feed system for substrate 1, not described in more detail.

[0030] According to a further embodiment, the separating device 2 is a component of a substrate-processing machine, in particular a sheet-processing machine, and is operated inline with the components of the sheet-processing machine. The sheet-processing machine is, in particular, a sheet-fed printing press, as is shown, for example, in Fig. 1 is shown.

[0031] The invention is described below using the example of a sheet-fed printing press, in particular an offset sheet-fed printing press, whereby this description is also intended to apply analogously to other sheet-processing machines and to an embodiment of the device as an independent machine.

[0032] The sheet-fed printing press comprises a feed system for substrates 1, also referred to as feeder 7. Substrates 1 are understood to be, in particular, sheet-shaped workpieces made of paper, cardboard, paperboard, corrugated cardboard, plastic, or the like, which are preferably printable or printed. The substrates 1 are present in the feeder 7 of the sheet-fed printing press as a stack, from which they are separated and fed to the units of the sheet-fed printing press downstream of the feeder 7 via an acceleration system 8. The sheet-fed printing press comprises at least one, preferably several, printing units 6. The printing units 6 each comprise, in particular, a printing cylinder 41 and a sheet guide cylinder 42, preferably designed as a transfer drum 42. Associated with the printing cylinder 41 is a blanket cylinder 43 carrying a rubber blanket, and associated with this cylinder is a plate cylinder 44 carrying a printing plate. The plate cylinder 44 is in contact with an inking unit 45 and preferably also with a dampening unit.In the printing unit 6, the substrate sheet 1 is guided in a manner known per se by the sheet holding systems provided on the printing cylinder 41 and sheet guide cylinder 42, printed in the printing gap formed between the printing cylinder 41 and the blanket cylinder 43, and transferred to the downstream unit of the sheet-fed printing press, e.g. in the form of the next printing unit 6. One or more processing units 46 can be formed downstream of the printing unit(s) 6 or between the printing units 6. The processing units 46 preferably comprise two processing cylinders, one of which, preferably the lower one, has a sheet holding system and the other, preferably the upper one, has a tool carrier. The processing cylinders are assigned to one another to form a cylinder gap. At least one of the processing cylinders carries a tool.In the simplest case, a processing cylinder pair is formed by the printing cylinder 41 and blanket cylinder 43 of a printing unit 6. In this case, one printing unit 6 serves as the processing unit 46. In this case, the tensioning device for the blanket serves to secure the tool to the blanket cylinder 43.

[0033] The processing cylinders can be designed in a variety of ways.

[0034] According to an embodiment which is particularly suitable for punching and perforating applications, the upper processing cylinder is designed as a full magnetic cylinder or carrier cylinder with magnetic segments for receiving magnetic sheets and the lower processing cylinder is designed as a surface-hardened cylinder or with a hardened sheet fastened thereon.

[0035] According to another embodiment, which is particularly suitable for embossing or creasing or grooving applications, the upper processing cylinder is designed as a full magnetic cylinder or carrier cylinder with magnetic segments for receiving magnetic sheets and the lower processing cylinder is designed as a surface-hardened cylinder or with a hardened sheet fastened thereon or with a sheet with hard rubber.

[0036] In all of the above cases, the lower machining cylinder can be equipped with mechanically acting tool carriers or lifting supports, particularly with positive or non-positive locking. The non-positive tool carriers or lifting supports are particularly designed to be magnetically acting.

[0037] The sequence of units of the sheet-fed printing press results from the technological requirements. Preferably, one or more processing units 46 are arranged downstream of one or more printing units 6. In the case of multiple printing units 6, these are usually equipped with different tools from the group of cutting tools, punching tools, creasing tools, perforating tools, or grooving tools. Likewise, one or more processing units 46 can be arranged upstream of one or more printing units 6. Alternatively, one or more processing units 46 can be arranged between one or more printing units 6. Preferably, the sheet-fed printing press also comprises one or more coating units, which are preferably arranged downstream of the printing units 6 or adjoin the processing units 46.

[0038] A substrate processing machine, in particular a sheet-fed processing machine, which is not a printing machine, can be similar in structure to the sheet-fed printing machine described, minus the printing units 6.

[0039] The separating device 2 is formed downstream of the printing units 6 or the processing units 46. The separating device comprises a transport cylinder 3. The transport cylinder 3 is double-sized, i.e. it transports two substrate sheets 1 per revolution. However, the invention is not limited to a double-sized embodiment of the transport cylinder 3. The invention is described below using a single-sized system. This description also represents the double-sized system or multiple-sized system in an analogous manner. In the region of the outer surface of the transport cylinder 3, a sheet holding system for fixing the leading edges of sheet-shaped substrate 1 is formed, in particular a gripper system (in the case of a double-sized system, two sheet holding systems are formed). The gripper system is designed as a suction gripper system 17 and is supplied with air.The suction gripper system 17 is designed to create a suction area whose extension in the axial direction of the transport cylinder 3 is a multiple of its extension in the circumferential direction. The extension of the suction area of ​​the suction gripper system 17 in the circumferential direction of the transport cylinder 3 is preferably less than 20 mm, more preferably less than 15 mm, more preferably less than 10 mm. The suction area can be formed by a continuous opening extending across the width of the transport cylinder 3 or by a plurality of adjacent suction openings. The at least one suction opening is arranged to fix the front edge of the substrate 1 such that, when the lift 5 is fixed, it is spaced from the lift 5 in the circumferential direction of the transport cylinder 3. Advantageously, the extension of the suction area in the axial direction of the transport cylinder 3 is adjustable.For this purpose, adjustment means 28, particularly in the form of shut-off valves, can be provided in the suction air supply path for the outer suction openings with respect to the center of the transport cylinder 3. The adjustability of the extension of the suction area has the advantage that suction air consumption is minimized. The transport cylinder 3 further preferably has means (in the case of a double-sized system, two fixing means are provided) for fixing an interchangeable packing 5. The fixing means are preferably designed as clamping grippers. With them, a respective packing 5 can be fixed at the rear edge and at the front edge. The means for fixing the front edge of the packing 5 are preferably formed by the front edge clamping element 22 (also referred to as a clamping jaw) and the further clamping element 24 (also referred to as an impact element) which interacts correlatively with the latter to form a clamping gap.The further clamping element 24 is fixedly mounted on the base body of the transport cylinder 3. The clamping element 22 is fixedly connected to a lever 21, which is mounted on the base body of the transport cylinder 3 so as to be pivotable about a pivot point 34. The lever 21 is tensioned by an energy accumulator 23, preferably designed as a spring, such that the clamping gap formed between the clamping element 22 and the further clamping element 24 closes. The spring 23 is designed as a compression spring and is supported with one end on the lever 21 and with its other end on the head of a screw screwed into the base body of the transport cylinder 3. The . Fig. 3 shows the clamping gripper front edge with the front edge of the elevator 5 fixed, ie in the closed state. Fig. 4 shows the front edge clamping gripper with the front edge of the packing 5 released, i.e. in the open state. The opening of the front edge clamping gripper is effected counter to the force of the spring 23. The force required to open the front edge clamping gripper is preferably applied by an actuating element 23, which can in particular be designed as a pneumatic muscle 25. The actuating element, or the pneumatic muscle 25, preferably acts on a further lever 33, one end of which is supported on a fixed point of the transport cylinder 3. Under the force of the actuating element 23, which can in particular be designed as a pneumatic muscle 25, the further lever 33 can be pivoted about the aforementioned fixed point. In the case of the design as a pneumatic muscle 25, this is pressurized with compressed air, under the effect of which it expands, whereby the further lever 33 is pivoted.The pivoting movement of the further lever 33 is limited by a wall formed on the transport cylinder 3. The further lever 33 acts on a ball 35 which is formed between the further lever 33 and the lever 21 and displaces the latter. As the ball 35 is displaced, the lever 21 and with it the clamping element front edge 22 are also displaced. If the actuating element 23 is actuated in the opposite direction or the pneumatic muscle 25 is depressurized, i.e. switched to a powerless state, the force of the energy accumulator 23, in particular the spring 23, displaces the lever 21, the ball 35 and the further lever 33 back towards their initial position until the movement is limited by the clamping element front edge 22 striking the further clamping element front edge 24 or the elevator 5.The rear edge of the packing 5 can be secured between a rear edge clamping element 47 and another rear edge clamping element 48, which together form a further clamping gap. The force required to close the rear edge clamping gripper is applied by a rotatable tensioning shaft 50, which acts on the rear edge clamping element 47 via a toggle lever 51. To tension the packing, at least one of the clamping grippers—the front edge clamping gripper or the rear edge clamping gripper—can be displaced in the circumferential direction of the transport cylinder. Fig. 3 and Fig. 4, the rear edge clamping gripper is displaceable. In particular, the rear edge clamping gripper is mounted on a carriage that can be moved in the circumferential direction of the transport cylinder 3. The carriage 49 preferably carries, in addition to the rear edge clamping gripper, also the tensioning shaft 50 and the toggle lever 51. To tension the packing 5, it is first fixed at both its ends by the front edge clamping gripper and the rear edge clamping gripper. The carriage 49 is then moved clockwise, which is effected by a further actuating element 52, which can also be designed as a pneumatic muscle. Regardless of the type of design of the means for fixing the packing 5, these preferably carry positioning pins or are preferably assigned positioning elements. The positioning pins or positioning elements can, in particular, be directly assigned to the further front edge clamping element 22.

[0040] The transport cylinder 3 preferably has first and second openings 12, 13 which, when the elevator 5 is fixed, are at least partially covered by the openings that can be formed in the elevator 5. The openings 12, 13 are connected to air supply means 14, 15. In particular, first air supply means 14 is provided for supplying the first openings 12 with air and second air supply means 15 is provided for supplying the second openings 13 with air. In the following context, air is understood to mean all forms of system air, ie in particular blown air or suction air, which are suitable in particular for exerting a physical effect such as e.g. force and which can be characterized by at least one of the parameters static pressure, dynamic pressure or volume flow. In particular, the chemical composition of the air or its moisture content is not important here.Such air is generated in a conventional manner using compressors, condensers, vacuum pumps, suction pumps, or similar components. The aforementioned air generators can be included in the first and second air supply means 14, 15 and, in particular, together with all means that supply the air to the openings 12, 14 and / or control the supply, form the air supply means 14, 15.

[0041] The first and second openings 12, 13 can preferably be supplied with air independently of one another. Preferably, the air supply to either the first or the second openings 12, 13, or both openings 12, 13, is designed to be switchable. In this sense, switchability refers in particular to switching between suction air and blown air, whereby the type of air supply is not important.

[0042] The first and second openings 12, 13 are formed in the outer surface of the transport cylinder 3. The first and second openings 12, 13 are preferably arranged alternately in the circumferential direction of the transport cylinder 3 or in the axial direction of the transport cylinder 3. The first and / or second openings 12, 13 are preferably groove-shaped or hole-shaped. The arrangement of the first and second openings 12, 13 in the outer surface of the transport cylinder 3 preferably results in a fine-meshed network of elements with which any openings formed in the packing 5 can be supplied with air. The arrangement of the openings in the packing 5 corresponds to the arrangement of the waste part or parts 9 on the one hand and the blank 10 on the other.For example, in the area of ​​those first openings 12 that are formed in the area of ​​blanks, perforations can be formed in the packing 5, while all second openings 13 that are formed in the area of ​​blanks 10 are not opposite any perforations in the packing 5. The same applies analogously to the area of ​​waste parts 9, whereby here the second openings 13 are opposite perforations in the packing 5, while the first openings 12 are covered by closed areas of the packing 5. Through these measures, blanks 10 and waste parts 9 can be treated differently or fixed on the outer surface of the transport cylinder 3 or its packing 5.

[0043] The details of the air supply to the first and second openings 12, 13 are particularly shown in the Fig. 5, Fig. 6 and Fig. 7. The air supply means 14, 15 for supplying the first and second openings 12, 13 preferably comprise one or more rotary valves or rotary inlets. Preferably, the rotary valves or rotary inlets are formed on the end face of the transport cylinder 3 or associated therewith. Preferably, two rotary valves or two rotary inlets are formed on opposite end faces of the transport cylinder 3. In the Fig. 5, Fig. 6 and Fig. In the example shown in Figure 7, the rotary valve or the at least one rotary inlet comprises a disk 18, which is assigned to one of the end faces of the transport cylinder 3. A plurality of groove-shaped recesses 19, 56, 57 are formed in the disk 18, which preferably extend in the shape of a circular segment, coaxial with the rotational axis 16 of the transport cylinder 3. The recess 19 is supplied with air via a first supply nozzle 53, the recess 56 via a second supply nozzle 54, and the recess 57 via a third supply nozzle 55. The recesses 19, 56, and 57 are formed on the side of the disk 18 facing the transport cylinder 3. They extend in the shape of a circular segment at different radii, coaxial with the rotational axis 16 of the transport cylinder 3.Each of the recesses 19, 56 and 57 does not have to be continuous in the circumferential direction of the disc 18 but can rather be perforated, so that on the same radius several recesses 19, 56 and 57 lie one behind the other when viewed in the circumferential direction of the disc 18. The recesses 19, 56 and 57 correspond in terms of their distance (radius) from the axis of rotation 16 of the transport cylinder 3 to openings 58 formed in the front side of the transport cylinder 3. Each of the openings 58 in the front side of the transport cylinder 3 communicates via further lines either with a single one or a part of the first openings 12 or with a single one or a part of the second openings 13 in the outer surface of the transport cylinder 3 or with the suction gripper system 17. This naturally only applies as long as the respective opening is opposite the respective recess 19, 56 and 57, depending on the angular position of the transport cylinder 3. In the one in . Fig. In the embodiment shown in Figure 2, the recesses 57 closest to the rotational axis 16 of the transport cylinder 3 supply the suction gripper system 17, the recesses 56 adjacent to these supply the second openings 13, and the recesses 19 adjacent to these supply the first openings 12.

[0044] The disc 18 is stationary relative to the transport cylinder 3, which rotates about the rotational axis 16 during operation. The extension of the recesses 19, 56, and 57 in the circumferential direction of the transport cylinder 3 determines the areas of suction or blowing air that are formed on the outer surface of the transport cylinder 3 in relation to the angle of rotation.

[0045] In addition to these effects, the areas of suction or blowing air can also be determined by the type of air supply or its activation or deactivation. Thus, the area supplied by the same air supply means 14 or 15 corresponding to the recesses 19, 56 can be shortened by switching off the air supply at an angle. Likewise, an area supplied by the same air supply means 14 or 15 corresponding to the recesses 19, 56 can be divided into at least one suction area and at least one blowing area by switching the air supply between a suction air supply and a blowing air supply. The suction area on the outer surface of the transport cylinder 3 is used for fixing, and the blowing area is used for ejecting blanks 10 or waste parts 9.It goes without saying that the air supply for the first openings 12 is preferably independent of the air supply for the second openings 13.

[0046] According to a preferred embodiment, the first and / or second air supply means 14, 15 are designed to switch off the suction air supply or to switch between suction air supply and blown air supply depending on the angular position of the respectively supplied openings 12, 13. Preferably, the first air supply means 14 switches the air supply to the first openings 12 off or switches from suction air supply to blown air supply when the respective first openings 12 reach a first release point due to rotation of the transport cylinder 3 about its axis of rotation 16. More preferably, the second air supply means 15 switches the air supply to the second openings 13 off or switches from suction air supply to blown air supply when the respective second openings 13 reach a second release point due to rotation of the transport cylinder 3 about its axis of rotation 16.

[0047] The disc 18 is preferably connected to a frame via a torque support 20 and is rotatably mounted on the transport cylinder 3. The transport cylinder 3 is preferably rotatably mounted in the same frame to which the torque support 20 is hinged.

[0048] In order to shift the areas of suction or blowing air, which are formed on the outer surface of the transport cylinder 3 in relation to the angle of rotation, actuators for rotating the disc 18 can be provided.

[0049] To facilitate assembly, the disc 18 preferably has a recess which allows radial displacement of the disc 18 in the sense of a shift for the purpose of replacement.

[0050] Instead of one disc 18, several discs 18 can also be provided. In the case of several discs 18, the recesses 57 for supplying the suction gripper system 17 are formed in one of the discs 18, and the recesses 19 and 56 for supplying the first and second openings 12, 13 are formed in the other disc 18.

[0051] The details of the supply of the suction gripper system 17 are shown in a preferred variant in Fig. 8. In the illustrated embodiment, the disc 18 serves to supply the first and second openings 12, 13 as well as the suction gripper system 17.

[0052] Alternatively, the disc 18 can also have exclusively groove-shaped recesses 57, which preferably extend in the shape of a circular segment, coaxial with the rotational axis 16 of the transport cylinder 3. In this embodiment, the recess 57 is also supplied with air by a third supply nozzle 55. The recess 57 is formed on the side of the disc 18 facing the transport cylinder 3. The recess 57 is preferably continuous or interrupted in the circumferential direction of the disc 18, so that several recesses 57 or sections of the recess 57 are formed on the same radius, viewed in the circumferential direction of the disc 18. The recess 57 corresponds, in terms of its distance (radius) from the rotational axis 16 of the transport cylinder 3, to one or more openings 58 formed in the end face of the transport cylinder 3. The or each opening 58 communicates with the suction gripper system 17 via further lines.This, of course, only applies as long as the respective opening 58 is opposite the recess 57, depending on the angular position of the transport cylinder 3. In other words, the length and position of the angular range in which suction air is applied to the suction gripper system 17, i.e., the suction gripper system 17 exerts a holding effect, is determined by the extent and position of the recesses 57.

[0053] It goes without saying that the air supply to the suction gripper system 17 is not limited to the described embodiment with discs 18. The air supply to the suction gripper system 17 can also be implemented with other known embodiments of an air supply that can cyclically activate and deactivate the suction air applied to the suction gripper system 17 with sufficient speed.

[0054] The suction gripper system 17 is formed in the region of the outer surface of the transport cylinder 3. The suction gripper system 17 is preferably assigned to the means for securing the elevator 5. In particular, the suction gripper system 17 can be mounted on the means for securing the elevator 5. Preferably, the means for securing the elevator 5, and thus also the suction gripper system 17, are mounted movable, in particular pivotably. The suction gripper system 17 can, in particular, be assigned to the clamping element front edge 22. It is also advantageous to arrange the suction gripper system 17 together with the clamping element 22 on the lever 21.

[0055] According to a preferred embodiment, a stripping cylinder 4 is arranged adjacent to the transport cylinder 3. The stripping cylinder 4 is rotatably mounted like the transport cylinder 3. The stripping cylinder 4 serves to strip waste parts 9 or blanks 10. Preferably, the stripping cylinder 4 has third openings 32. Third air supply means are provided to supply the third openings 32 with air.

[0056] The stripping cylinder 4, like the transport cylinder 3, can also be designed to be double-sized or single-sized. In the case of a double-sized stripping cylinder 4, its circumference or diameter corresponds to the circumference or diameter of a double-sized transport cylinder 3. Preferably, the stripping cylinder 4 is designed to be single-sized. In its construction, the stripping cylinder 4 is preferably similar to the transport cylinder 3 in many features, so that for a description of the nature of the stripping cylinder 4, reference is made to the explanations regarding the nature of the transport cylinder 3. This applies in particular to all assemblies of the transport cylinder 3 or the stripping cylinder 4 for which no explicit reference is made to structural differences or a lack thereof. The nature of the stripping cylinder 4 is described below using a single-sized system.This description also represents the double-size or multi-size system in analogous fashion. Unlike the transport cylinder 3, the stripping cylinder 4 does not include a sheet holding system for securing the leading edges of sheet-shaped substrate 1.

[0057] Like the transport cylinder 3, the stripping cylinder 4 preferably has means for securing an exchangeable packing 5. The securing means are preferably designed as clamping grippers. With them, a respective packing 5 can be secured at the rear edge and at the front edge. The means for securing the front edge of the packing 5 are preferably formed by the front edge clamping element 22 and the further clamping element 24, which interacts correlatively with it to form a clamping gap. The front edge clamping element 22 is mounted on the base body of the stripping cylinder 4. The further clamping element 24 can in particular be formed as a leaf spring assembly. Adjacent to the further clamping element 24 is an actuating element 25, preferably designed as a pneumatic muscle. The actuating element is preferably connected to an air supply, with which an overpressure can be applied to the actuating element 25.When overpressure is applied, the actuating element 25 expands, whereby it rests against the further clamping element 24 and deforms the latter. As a result of the deformation, in particular the bending of the further clamping element 24, its extension changes in the direction of the clamping element front edge 22. By applying overpressure, e.g. in the form of compressed air, to the actuating element 25, the gap formed between the clamping element front edge 22 and the further clamping element 24 can be enlarged. When the overpressure at the actuating element 25 is switched off, the gap can be reduced, which corresponds to the clamping of the elevator 5. The . Fig. 10 shows the clamping gripper of the stripping cylinder 4 front edge with fixed front edge of the elevator 5, ie in the closed state.

[0058] The rear edge of the elevator 5 can be secured between a rear edge clamping element 47 and another rear edge clamping element 48, which together form a further clamping gap. The force required to close the rear edge clamping gripper is applied by a rotatable tensioning shaft 50, which acts on the rear edge clamping element 47 via a toggle lever 51.

[0059] To tension the elevator, at least one of the clamping grippers, i.e. the clamping gripper front edge or the clamping gripper rear edge, can be displaced in the circumferential direction of the stripping cylinder 4. In the Fig. 10, the rear edge clamping gripper is displaceable. In particular, the rear edge clamping gripper is mounted on a carriage 49 that can be displaced in the circumferential direction of the stripping cylinder 4. The carriage 49 preferably carries, in addition to the rear edge clamping gripper, the tensioning shaft 50 and the toggle lever 51. To tension the packing 5, it is first fixed at both ends by the front edge clamping gripper and the rear edge clamping gripper. Subsequently, the carriage 49 is displaced counterclockwise, which is effected by a further actuating element 52, which can also be designed as a pneumatic muscle.

[0060] Regardless of the design of the means for securing the cover 5, these preferably carry positioning pins or are preferably associated with positioning elements. The positioning pins or positioning elements can, in particular, be directly associated with the further clamping element, front edge 22.

[0061] It goes without saying that the described elements for securing the leading edge and the elements for securing the trailing edge can also be designed in other ways. Thus, as an alternative to the design of force-locking elements, it also proves advantageous if the elements for securing the leading edge and / or the elements for securing the trailing edge are designed for positively securing the elevators 5. In this case, hook-shaped or claw-shaped retaining elements can be designed, in particular, which correspond to recesses formed in the elevator 5 or engage in retaining rails that are firmly connected to the elevator 5.

[0062] The clamping gripper front edge or the clamping gripper rear edge are preferably mounted in a channel of the stripping cylinder 4, which can be spanned by a channel cover.

[0063] The stripping cylinder 4 preferably has third openings 32 which, when the elevator 5 is fixed, are at least partially covered by the openings that can be formed in the elevator 5. The third openings 32 are connected to third air supply means. In the following context, air is understood to mean all forms of system air, ie in particular blown air or suction air, which are suitable in particular for exerting a physical effect such as a force effect and which can be characterized by at least one of the parameters static pressure, dynamic pressure or volume flow. Such air is generated in a manner known per se using compressors, condensers, vacuum pumps, suction pumps or similar components.

[0064] The third openings 32 can be supplied with suction air. Preferably, the air supply is designed to be switchable. In this sense, switchability means in particular switching between suction air and blown air, whereby it is not important which type of air supply is switched from which to which. The third openings 32 are formed in the outer surface of the stripping cylinder 4. Preferably, the third openings 32 are groove-shaped or hole-shaped. The arrangement of third openings 32 in the outer surface of the stripping cylinder 4 preferably results in a fine-meshed network of elements with which any openings formed in the elevator 5 can be supplied with air. The arrangement of the openings in the elevator 5 corresponds to the arrangement of the waste part or parts 9 on the one hand or the blank 10 on the other.For example, openings can be formed in the elevator 5 in the area of ​​those third openings 32 formed in the area of ​​the blanks. This proves advantageous if the stripping cylinder 4 is to be used to transport the blanks 10.

[0065] If the stripping cylinder 4 is intended to be used to transport waste parts 9, openings are preferably formed in the elevator 5 in the region of those third openings 32 that are formed in the region of the waste parts 9. These measures allow the blanks 10 or waste parts 9 to be treated differently or fixed to the outer surface of the stripping cylinder 4 or its elevator 5. The release of the blanks 10 or waste parts 9 can be assisted by applying blast air to the third openings 32.

[0066] The details of the air supply to the third openings 32 are not shown separately and are described below with reference to the design of the air supply means 14, 15 on the transport cylinder 3. The air supply means for supplying the third openings 32 preferably comprise a rotary valve or a rotary inlet. Preferably, the rotary valve or the rotary inlets are formed on the end face of the stripping cylinder 4 or are assigned thereto. The rotary valve or the at least one rotary inlet preferably comprises a disk 18 assigned to one of the end faces of the stripping cylinder 4. A recess X is formed in the disk 18, which preferably extends in the shape of a circular segment, coaxial with the axis of rotation of the stripping cylinder 4. The recess is supplied with air via a fourth supply nozzle 53. The recess is formed on the side of the disk 18 facing the stripping cylinder 4.The recess is not continuous in the circumferential direction of the disc 18 but can rather be perforated, so that several recesses are formed one behind the other in the circumferential direction of the disc 18. Each recess corresponds, with regard to its distance (radius) from the axis of rotation of the stripping cylinder 4, to openings 58 formed in the front side of the stripping cylinder 4. Each of the openings 58 in the front side of the stripping cylinder 4 communicates via further lines either with a single opening or with some or all of the third openings 32 in the outer surface of the stripping cylinder 4. This, of course, only applies as long as the respective opening 58 is opposite the respective recess, depending on the angular position of the stripping cylinder 4.

[0067] The disc 18 is stationary relative to the stripping cylinder 4, which rotates around its central axis during operation. The extent of the recesses in the circumferential direction of the stripping cylinder 4 determines the areas of suction or blowing air that are formed on the outer surface of the stripping cylinder 4 in relation to the angle of rotation.

[0068] In addition to these effects, the areas of suction or blowing air can also be determined by the type of air supply or its activation or deactivation. Thus, the area supplied by the third air supply means corresponding to the recess can be shortened by switching off the air supply at an angle. Likewise, an area supplied by the third air supply means corresponding to the recesses can be divided into at least one suction area and at least one blowing area by switching the air supply between a suction air supply and a blowing air supply. The suction area on the outer surface of the stripping cylinder 4 serves to secure the blanks 10 or waste parts 9, while the blowing area is used to eject them.

[0069] According to a preferred embodiment, the third air supply means are designed to shut off the suction air supply or to switch between the suction air supply and the blowing air supply depending on the angular position of the respective supplied third openings 32. Preferably, the third air supply means switch the air supply of the third openings 32 off or switch from the suction air supply to the blowing air supply when the respective third openings 32 reach a third release point due to rotation of the stripping cylinder 4 about its central axis.

[0070] The disc 18 is preferably connected to a frame via a torque support 20 and is rotatably mounted on the stripping cylinder 4. The stripping cylinder 4 is preferably rotatably mounted in the same frame to which the torque support 20 is hinged.

[0071] In order to shift the areas of suction or blowing air, which are formed on the outer surface of the stripping cylinder 4 in relation to the angle of rotation, actuators for rotating the disc 18 can be provided.

[0072] To facilitate assembly, the disc 18 preferably has a recess that allows radial displacement of the disc 18 for replacement purposes. The recess has an extension that is larger than the diameter of a pin of the stripping cylinder 4 in the area of ​​the stripping cylinder 4 in which the disc 18 is associated.

[0073] The stripping cylinder 4 and the transport cylinder 3 contribute to the treatment of substrates 1, in particular to the separation or stripping of processed, i.e. trimmed or cut, web-containing or perforated substrate 1 into at least one waste part 9 and at least one blank 10, preferably one pull-up 5 each. During the separation or stripping, remaining holding webs or material connections that were intentionally not completely cut through, in particular fibers or fiber bundles, are torn in the region of cutting lines between the waste part 9 and at least one blank 10. For this purpose, one of the pull-ups 5 can be designed as a female die and the other pull-up 5 as a male die. The male die has a base plane and regions that are raised relative to the base plane. The raised regions act on the substrate 1 and form tools. The female die has a base plane and regions that are depressed relative to the base plane or further recesses.The die and male die are arranged on the transport cylinder 3 or stripping cylinder 4 in such a way that the raised areas of the male die are opposite the depressed areas or the further recesses in the die. The male die forms a type of counterpart to the die. The die is arranged either on the transport cylinder 3 or the stripping cylinder 4, and the male die on the other cylinder. The other cylinder in this sense is the cylinder that interacts with the cylinder carrying the die (transport cylinder 3 or stripping cylinder 4). Preferably, the die is arranged on the transport cylinder 3 and the male die on the stripping cylinder. The male and female tool pair described above preferably differs from male and female tool pairs such as those used in cutting or perforating, e.g. on the processing cylinders upstream of the separating device 2.The design of the male die is determined by its function of simply pressing the elements to be separated or broken out into the recessed areas or other recesses of the female die. Accordingly, the raised areas of the male die can also be significantly smaller than the corresponding recessed areas or other recesses of the female die. A flexographic printing plate can be used as the male die, in particular.

[0074] In an alternative embodiment, the male part does not have any raised areas relative to the base plane, but rather has an overall raised base plane. In this case, the male part is provided with an elastic coating or is made of an elastic material, at least on the side facing the female part.

[0075] During separation or breaking out, waste parts 9 and blanks 10 are moved relative to one another, whereby residual webs or individual fibers or fiber bundles are torn apart in the region of the cutting lines. For this purpose, either the waste parts 9 or the blanks 10 are preferably pressed by the male mold into the recessed areas or the further recesses of the female mold. If a male mold with an elastic surface is used, the waste parts 9 are pressed into the recessed areas or the further recesses of the female mold, whereby the surface of the male mold expands at these points, while in areas of the surface outside the recesses or further recesses in the female mold the substrate is pressed against the surface of the female mold. If a male mold with an elastic surface is used, this can also be designed as a sleeve.

[0076] According to a further preferred embodiment, no stripping cylinder 4 is assigned to the transport cylinder 3, wherein in this embodiment too, the waste parts 9 and blanks 10 are moved relative to one another and residual webs or individual fibers or fiber bundles are torn in the region of cutting lines. The separating device 2 is preferably designed such that it acts exclusively on the side of the processed substrate 1 facing the transport cylinder 3, while the substrate 1 is transported on the transport cylinder 3. In a preferred embodiment, the separating device 2 is formed from raised areas and areas of the surface of the transport cylinder 3 that are depressed relative to the raised areas. The depressed areas are further preferably assigned first openings 12, which can be operatively connected to first air supply means 14. The first air supply means 14 are preferably designed to supply suction air.Further preferably, a cover 5 is interchangeably assigned to the outer surface of the transport cylinder 3, wherein the raised regions of the surface of the transport cylinder 3 are formed by the cover 5 and the depressed regions of the surface of the transport cylinder 3 are formed by the outer surface of the transport cylinder 3 in the region of openings formed in the cover 5. Second openings 13 can be formed in the raised regions and / or the depressed regions of the surface of the transport cylinder 3, which are operatively connected to second air supply means 15. Furthermore, the first and / or second air supply means 14, 15 can be switchable between a suction air supply and a blown air supply.

[0077] To achieve the relative movement of the waste parts 9 and blanks 10 relative to one another, the transport cylinder 3 can be assigned a lift 5, which is particularly designed in the manner of a die and has recessed areas or further perforations. In the area of ​​the recessed areas or further perforations, a negative pressure is applied via the first and / or second openings 12, 13, which moves the waste parts 9 and blanks 10 relative to one another, i.e., in particular, draws the waste parts 9 into the recessed areas or the further perforations while the blanks 10 are supported on the base plane of the die. Alternatively, it can also be provided to draw the blanks 10 into the recessed areas or the further perforations while the waste parts 9 are supported on the base plane of the die.In other words, the separation process is preferably effected solely by the force of the negative pressure or suction air applied in the recessed areas or further openings on the sides of the blanks 10 or waste parts 9 facing the transport cylinder 3. Openings are preferably arranged in the area of ​​the recessed areas. These ensure that the negative pressure applied at the first and / or second openings 12, 13 can spread to the side of the blanks 10 or waste parts 9 facing the transport cylinder 3.

[0078] According to another preferred embodiment with or without stripping cylinder 4, a circulating conveyor belt 29 is assigned to the transport cylinder 3, as can be seen in particular from Fig. 11 or Fig. 12. The conveyor belt 29 is preferably arranged above the transport cylinder 3. The conveyor belt 29 is assigned to the transport cylinder 3, preferably wrapping partially around the circumference, forming a wrap angle. Alternatively, the conveyor belt 29 can also be assigned to the transport cylinder 3, forming a tangent point 36. More preferably, the tangent point 36 is formed in the 12 o'clock position of the transport cylinder 3. The extension of the conveyor belt 29 is determined by the arrangement of deflection rollers. The conveyor belt 29 preferably has a horizontally extending transport region 37. The conveyor belt 29 can in particular be designed as a suction belt. More preferably, suction air is applied to the conveyor belt 29 at least in the transport region 37. This means that the conveyor belt 29 can be designed for the suspended transport of blanks and / or waste parts 10, 9.

[0079] The conveyor belt 29 has in particular the function of taking over processed substrate sheets 1, waste parts 9 or blanks 10 in the tangent point 36 or in the area of ​​the wrap of the conveyor belt 29 around the transport cylinder 3 and transporting them further.

[0080] Another transport system, for example in the form of a further transport belt 30, can be connected to the transport belt 29. Preferably, an overlapping area is formed between the transport belt 29 and the further transport belt 30, in which functionally processed substrate sheets 1 or blanks 10 and / or waste parts 9 can be transferred from the transport belt 29 to the further transport belt 30. Further preferably, the further transport belt 30 is designed for the horizontal transport of blanks and / or waste parts 10, 9.

[0081] It goes without saying that instead of the further conveyor belt 30, another suitable transport system can also be designed that takes over processed substrate sheets 1 or blanks 10 and / or waste parts 9 from the conveyor belt 29.

[0082] Instead of the additional conveyor belt 30, a container for receiving waste parts can also be arranged under the conveyor belt 29.

[0083] In addition to the conveyor belt 29, a further transport system 76 can also be directly assigned to the transport cylinder 3, i.e., forming a transfer area or transfer point between the transport cylinder 3 and the further transport system for processed substrate sheets 1 or blanks 10 and / or waste parts 9. This further transport system 76 is preferably designed as a sheet guide cylinder or sheet guide drum or chain conveyor system with gripper bars or a conveyor belt.

[0084] The operation of an embodiment as preferably provided by the Fig. 11 or Fig. 12. can be described as follows. The illustrated embodiment of the device for treating substrates is preferably a component of a sheet-fed printing press. The sheet-fed printing press can comprise one or more printing units. Further preferred are the Fig. 11 or Fig. 12. In the embodiment shown, two processing cylinders are arranged upstream, between which the substrate 1 can be inserted, wherein the substrate 1 undergoes processing when passing through tool parts from the group of cutting tools, punching tools, creasing tools, perforating tools that are active in the cylinder gap. One of the processing cylinders is in Fig. 11 or Fig. 12. shown as a semicircle. The processing cylinder is preferably designed as a sheet transport cylinder and has a sheet holding system. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system, in particular the suction gripper system 17 of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a lifting device 5. The lifting device 5 has openings and is provided with depressions at the points where it acts on the blank 10.On the one hand, perforations are made in the area of ​​the blanks 10 at the points in the elevator 5 where first openings 12 are formed, wherein the second openings 13 in the area of ​​the blanks 10 are covered, i.e. closed, by the elevator 5. On the other hand, perforations are also made in the area of ​​the waste parts 9 at the points in the elevator 5 where second openings 13 are formed, wherein the first openings 12 in the area of ​​the waste parts 9 are covered, i.e. closed, by the elevator 5. When the first openings 12 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or exactly at the tangent point A, the first air supply means 14 applies a negative pressure to the first openings 12, which fixes the blanks 10 to the outer surface of the transport cylinder 3 or to the elevator 5.As a result of the further rotation of the transport cylinder 3, the blanks 10, which have been fixed by the negative pressure, as well as the waste parts 9, reach the tangent point B, which is formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3. In the process, the remaining webs that connect the waste parts 9 to the frame or to the good parts 10 are torn apart. Preferably at the tangent point B, a negative pressure is applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9, which fixes the waste parts 9 to the outer surface of the transport cylinder 3 or to the packing 5.Alternatively, the negative pressure can also be applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9 at the tangential point A or immediately thereafter. When the respective blanks 10 reach the transfer point or transfer area C between the transport cylinder 3 and the conveyor belt 29, the first air supply means 14 are preferably deactivated. The negative pressure in the area of ​​the first openings 12 is no longer present and the blanks 10 are no longer fixed and thus released. As a result of the negative pressure preferably applied to the conveyor belt 29, the blanks 10 are lifted off the transport cylinder 3 at the transfer point or transfer area C, fixed to the underside of the conveyor belt 29 and transported away while hanging therefrom. The transfer of the blanks 10 from the transport cylinder 3 to the conveyor belt 29 can be assisted by applying an overpressure to the first openings 12.The supply to the first openings 12 is preferably switched from negative pressure to positive pressure when the first openings in the area of ​​the respective blanks 10 reach the transfer point or transfer area C. The removal of the blanks 10 can preferably be achieved with the additional conveyor belt 30. For this purpose, the conveyor belt 29 conveys the blanks 10 to the additional conveyor belt 30 and transfers the blanks 10 to the additional conveyor belt 30. For the transfer, the negative pressure applied to the conveyor belt 29 is preferably deactivated so that the blanks are fixed to the additional conveyor belt 30 under the effect of gravity or by additional suction and are transported away by the additional conveyor belt 30. When the waste parts 9 reach the release point D, the negative pressure applied to the second openings 13 in the area of ​​the waste parts 9 is deactivated or, preferably, an overpressure is applied instead of the negative pressure.This results in the release of the waste parts 9 or an active rejection of the waste parts 9, which can be picked up by a waste container. In the area of ​​release point D, in addition to the waste parts 9, preferably also the front edge of the substrate sheet 1 is released by the gripper system 17.

[0085] The further operation of an embodiment as preferably by the Fig. 11 or Fig. 12. can be described as follows. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system, in particular the suction gripper system 17 of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a lift 5. The lift 5 has openings and is provided with depressions at the points where it acts on the blank 10.On the one hand, perforations are made in the area of ​​the blanks 10 at the points in the elevator 5 where first openings 12 are formed, wherein the second openings 13 in the area of ​​the blanks 10 are covered, i.e. closed, by the elevator 5. On the other hand, perforations are also made in the area of ​​the waste parts 9 at the points in the elevator 5 where second openings 13 are formed, wherein the first openings 12 in the area of ​​the waste parts 9 are covered, i.e. closed, by the elevator 5. When the first openings 12 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or exactly at the tangent point A, the first air supply means 14 applies a negative pressure to the first openings 12, which fixes the blanks 10 to the outer surface of the transport cylinder 3 or to the elevator 5.As a result of the further rotation of the transport cylinder 3, the blanks 10, which are fixed by the negative pressure, as well as the waste parts 9 reach the tangent point B, which is formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3. In the process, the residual webs that connect the waste parts 9 to the frame or to the good parts 10 are torn. The packing 5 fixed on the stripping cylinder 4 has openings that correspond to the third openings 32 of the stripping cylinder 4. The openings are formed in the area of ​​the packing 5 in which it is not raised or in which it interacts with the blanks 10 in rolling contact.When the third openings 32 of the stripping cylinder 4 reach the tangent point B and are opposite a respective blank 10 at the tangent point B, a negative pressure is applied to them. As a result of this negative pressure, a force is exerted that lifts the blanks 10 from the surface of the transport cylinder 3. The negative pressure at the third openings 32 of the stripping cylinder 4 is deactivated as soon as they have left the area of ​​the tangent point B again or a few degrees, in particular 10 degrees, thereafter. Preferably, the negative pressure applied to the first openings 12 is deactivated when the respective first openings 12 are in the area of ​​the tangent point B.This ensures that the respective blank 10 is briefly lifted from the surface of the transport cylinder 3 under the effect of the negative pressure at the third openings 32 of the stripping cylinder 4, i.e. for a few angular degrees, in particular 10 degrees of the rotational movement of the transport cylinder 3. This measure additionally supports the separation of the blank 10 and waste parts 9, since these are actively moved in different directions, at least for a short time. Preferably at the tangential point B, a negative pressure is applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9, which fixes the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. Alternatively, the negative pressure can also be applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9 at the tangential point A or immediately thereafter.When the respective blanks 10 reach the transfer point or transfer area C between transport cylinder 3 and conveyor belt 29, the first air supply means 14 are preferably deactivated. The negative pressure in the area of ​​the first openings 12 is no longer present and the blanks 10 are no longer fixed and thus released. As a result of the negative pressure preferably present on the conveyor belt 29, the blanks 10 are lifted off the transport cylinder 3 at the transfer point or transfer area C, fixed to the underside of the conveyor belt 29 and transported away hanging thereon. The transfer of the blanks 10 from the transport cylinder 3 to the conveyor belt 29 can be assisted by applying positive pressure to the first openings 12. The supply to the first openings 12 is preferably switched from negative pressure to positive pressure when the first openings in the area of ​​the respective blanks 10 reach the transfer point or transfer area C.The removal of the blanks 10 can preferably be achieved with the additional conveyor belt 30. For this purpose, the conveyor belt 29 conveys the blanks 10 to the additional conveyor belt 30 and transfers the blanks 10 to the additional conveyor belt 30. For the transfer, the negative pressure applied to the conveyor belt 29 is preferably deactivated so that the blanks are fixed to the additional conveyor belt 30 under the effect of gravity or by additional suction and are transported away by this. When the waste parts 9 reach the release point D, the negative pressure applied to the second openings 13 in the area of ​​the waste parts 9 is deactivated or, preferably, an overpressure is applied instead of the negative pressure. This releases the waste parts 9 or actively rejects the waste parts 9, which can be picked up by a waste container.In the area of ​​release point D, in addition to the waste parts 9, preferably also the front edge of the substrate sheet 1 is released by the gripper system 17.

[0086] A further mode of operation of an embodiment as preferably provided by the Fig. 11 or Fig. 12. is illustrated, relates to full-sheet processing or full-sheet inspection and is described below. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system, in particular the suction gripper system 17 of the transport cylinder 3 takes over the processed, in particular trimmed, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a cover 5. The cover 5 has openings. The openings are made at the points in the cover 5 where first and / or second openings 12, 13 are formed.When the first and / or second openings 12, 13 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or exactly at the tangent point A, a negative pressure is applied to the first and / or second openings 12, 13 by the first and / or second air supply means 14, 15, which fixes only the blanks 10 or only the waste parts 9 or the blanks 10 and the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. As a result of the further rotation of the transport cylinder 3, the blanks 10 and the waste parts 9 pass the tangent point B. Contact between the waste parts 9 or the blanks and other elements does not occur at the tangent point B. When the respective blanks 10 and the respective waste parts 9 reach the transfer point or transfer area C between the transport cylinder 3 and the conveyor belt 29, the first and / or second air supply means 14, 15 are preferably deactivated.The negative pressure in the area of ​​the first and / or openings 12, 13 is no longer present and the blanks 10 and the waste parts 9 are no longer fixed and thus released. The fixing of the leading edges of the substrate sheets 1 by the gripper system 17 is also released at the transfer point or transfer area C. As a result of the negative pressure preferably applied to the conveyor belt 29, the blanks 10 and the waste parts 9 and the frames of the substrate sheets 1, including the leading edges of the substrate sheets 1, which are still connected to one another by the remaining webs (full sheet), are lifted off the transport cylinder 3 at the transfer point or transfer area C, fixed to the underside of the conveyor belt 29 and transported away hanging thereon.The transfer of the blanks 10 and the waste parts 9 and the frames of the substrate sheets 1, including the leading edges of the substrate sheets 1, as a whole sheet from the transport cylinder 3 to the transport belt 29 can be assisted by applying an overpressure to the first and / or second openings 12, 13. The supply to the first and / or second openings 12, 13 is preferably switched from negative pressure to positive pressure when the first and / or second openings 12, 13 reach the transfer point or transfer area C.

[0087] The removal of the full sheets can preferably be achieved with the additional conveyor belt 30. For this purpose, the conveyor belt 29 conveys the full sheets to the additional conveyor belt 30 and transfers the full sheets to the additional conveyor belt 30. For the transfer, the negative pressure applied to the conveyor belt 29 is preferably deactivated, so that the full sheets are fixed to the additional conveyor belt 30 under the effect of gravity or by additional suction and are transported away by the additional conveyor belt 30.

[0088] According to another preferred embodiment with stripping cylinder 4, a circulating conveyor belt 29 is associated with the stripping cylinder, as can be seen in particular from Fig. 13 can be seen. The conveyor belt 29 is preferably arranged above the transport cylinder 3. The conveyor belt 29 is assigned to the stripping cylinder 4, preferably forming a transfer point 38 or transfer area. More preferably, the conveyor belt 29 is arranged to partially wrap around the stripping cylinder 4, forming a wrap angle. Particularly preferably, the transfer point 38 or the transfer area is formed in the 8 o'clock position of the stripping cylinder 4 and the stripping cylinder 4 is assigned to the transport cylinder 3 in the 12 o'clock position of the transport cylinder 3. The extension of the conveyor belt 29 is determined by the arrangement of deflection rollers. The conveyor belt 29 preferably has a first transport area 39 which extends at least approximately tangentially to the stripping cylinder 4. More preferably, the first transport area 39 is inclined at an angle of between 30 and 60 degrees to the horizontal.The conveyor belt 29 preferably has a second transport area 40 which runs at least approximately horizontally, in particular exactly horizontally. In particular, the conveyor belt 29 is a suction belt and the first transport area 39 is an area in which suction air is applied to the conveyor belt 29. The conveyor belt 29 has the particular function of receiving processed substrate sheets 1, waste parts 9 or blanks 10 from the stripping cylinder 4 at the transfer point 38 or transfer area between the conveyor belt 29 and the stripping cylinder 4 and transporting them further. Another transport system, for example in the form of a further conveyor belt 30, can be connected to the conveyor belt 29. An overlap area is preferably formed between the conveyor belt 29 and the further conveyor belt 30, in which overlap area the processed substrate sheets 1 or blanks 10 and / or waste parts 9 can be transferred from the conveyor belt 29 to the further conveyor belt 30.It goes without saying that instead of the further conveyor belt 30, another suitable transport system can also be designed which takes over processed substrate sheets 1 or blanks 10 and / or waste parts 9 from the conveyor belt 29. In addition to the conveyor belt 29, a further transport system 76 can also be assigned directly to the stripping cylinder 4, i.e., forming a transfer area or transfer point between the stripping cylinder 4 and the further transport system 76 for processed substrate sheets 1 or blanks 10 and / or waste parts 9. This further transport system 76 is preferably designed as a sheet guiding cylinder or sheet guiding drum or chain conveyor system with gripper bridges or conveyor belt. The stripping cylinder 4 preferably has third openings 32 and third air supply means for supplying the third openings 32 with air.The third air supply means are preferably switchable between a suction air supply and a blown air supply. In particular, the third air supply means are designed to switch between suction air supply and blown air supply depending on the angular position of the respective supplied third openings 32. Further preferably, the third air supply means are designed to switch the air supply of the third openings 32 from suction air supply to blown air supply when the respective third openings 32 reach a third release point, in particular the transfer point or transfer area between the stripping cylinder 4 and the conveyor belt 29, due to rotation of the stripping cylinder 4 about its axis of rotation. The third openings 32 can be groove-shaped or hole-shaped.The third air supply means preferably comprise a rotary valve or a rotary inlet, wherein the at least one rotary valve or the at least one rotary inlet can be formed on the front side of the stripping cylinder 4. Like the transport cylinder 3, the stripping cylinder 4 preferably has means for securing an exchangeable packing 5. The securing means are preferably designed as clamping grippers. With them, a respective packing 5 can be secured at the rear edge and at the front edge. The means for securing the front edge of the packing 5 are preferably formed by the front edge clamping element 22 and the further clamping element 24 which cooperates correlatively with the front edge to form a clamping gap. The front edge clamping element 22 is mounted on the base body of the stripping cylinder 4. The further clamping element 24 can in particular be formed as a leaf spring assembly.Adjacent to the additional clamping element 24 is an actuating element 25, preferably designed as a pneumatic muscle. The actuating element is preferably connected to an air supply, with which overpressure can be applied to the actuating element 25. The rear edge of the packing 5 can be fixed between a rear edge clamping element 47 and another rear edge clamping element 48, which together form a further clamping gap. The force required to close the rear edge clamping gripper is applied by a rotatable tensioning shaft 50, which acts on the rear edge clamping element 47 via a toggle lever 51.

[0089] Further preferred details of the stripping cylinder 4 are shown in Fig. 10 and the associated description, to which reference is made in connection with the described embodiment. A packing 5 with perforations is preferably fixed to the stripping cylinder 4. The packing 5 fixed to the stripping cylinder 4 has the perforations in the packing 5 of the stripping cylinder 4 corresponding to the third openings 32 of the stripping cylinder 4. The perforations are preferably formed in the region of the packing 5 in which it is not raised and interacts with the blanks 10 in rolling contact. When the third openings 32 of the stripping cylinder 4 reach the tangent point B and are opposite a respective blank 10 at the tangent point B, a negative pressure is applied to them. As a result of this negative pressure, a force is exerted which lifts the blanks 10 from the surface of the transport cylinder 3.

[0090] A preferred mode of operation of an embodiment as preferably provided by the Fig. 13, can be described as follows. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system, in particular the suction gripper system 17 of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a lift 5. The lift 5 has openings and is provided with depressions at the points where it acts on the blank 10.Perforations are preferably made, on the one hand, in the area of ​​the blanks 10 at the points in the elevator 5 where first openings 12 are formed, wherein the second openings 13 in the area of ​​the blanks 10 are covered, i.e., closed, by the elevator 5. Perforations are preferably also made, on the other hand, in the area of ​​the waste parts 9 at the points in the elevator 5 where second openings 13 are formed, wherein the first openings 12 in the area of ​​the waste parts 9 are covered, i.e., closed, by the elevator 5. When the first openings 12 have passed the tangent point A as a result of the rotation of the transport cylinder 3, or exactly at the tangent point A, the first air supply means 14 applies a negative pressure to the first openings 12, which fixes the blanks 10 to the outer surface of the transport cylinder 3 or to the elevator 5.As a result of the further rotation of the transport cylinder 3, the blanks 10, which are fixed by the negative pressure, as well as the waste parts 9 reach the tangent point B, which is formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3. In the process, the residual webs that connect the waste parts 9 to the frame or to the good parts 10 are torn. The packing 5 fixed on the stripping cylinder 4 has openings that correspond to the third openings 32 of the stripping cylinder 4. The openings are preferably formed in the area of ​​the packing 5 in which it is not raised or in which it interacts with the blanks 10 in rolling contact.When the third openings 32 of the stripping cylinder 4 reach the tangent point B and are opposite a respective blank 10 at the tangent point B or immediately in front of it, a negative pressure is applied to them. As a result of this negative pressure, a force is exerted which lifts the blanks 10 from the surface of the transport cylinder 3. The negative pressure applied to the first openings 12 of the transport cylinder 3 is preferably deactivated when the respective first openings 12 are located in the region of the tangent point B. This ensures that the respective blank 10 is lifted from the surface of the transport cylinder 3 under the effect of the negative pressure at the third openings 32 of the stripping cylinder. The negative pressure applied to the second openings 13 is preferably maintained when the respective second openings 13 pass the tangent point B.As a result, the waste parts 9 are held on the surface of the transport cylinder 4 and transported past the tangent point B, while the blanks 10 are transferred from the transport cylinder 3 to the stripping cylinder 4 at the tangent point B. As a result of its rotation, the stripping cylinder 4 transports the blanks 10, which are fixed by negative pressure, further in the direction of the conveyor belt 29 until they reach the transfer point or transfer area E of the stripping cylinder 4 and conveyor belt 29. At the transfer point or transfer area E of the stripping cylinder 4 and conveyor belt 29, a suction effect is preferably exerted on the side of the blanks 10 facing away from the stripping cylinder 4 by the conveyor belt 29, which is preferably designed as a suction belt. When the respective third openings 32 reach the transfer point or transfer area E, the negative pressure applied to them is also deactivated.Preferably, following deactivation of the negative pressure at the third openings 32, an overpressure can be built up. Due to the described forces, the respective blanks 10 are transferred from the stripping cylinder 4 to the conveyor belt 29 at the transfer point or transfer area E. The conveyor belt 29 runs on deflection rollers, at least one of which is driven, and transports the blanks 10 preferably to a stacking device or depositing device (not shown). After passing the transfer point or transfer area E through the third openings 32, the negative pressure applied to them can be deactivated. The deactivation ends at the latest when the third openings 32 return to the tangent point B.Preferably at tangential point B, a negative pressure is applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9, which fixes the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. Alternatively, the negative pressure can also be applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9 already at tangential point A or immediately thereafter. When the waste parts 9 reach the release point D, the negative pressure present at the second openings 13 in the area of ​​the waste parts 9 is deactivated or, preferably, an overpressure is applied instead of the negative pressure. This releases the waste parts 9 or actively repels the waste parts 9, which can be picked up by a waste container. In the area of ​​release point D, in addition to the waste parts 9, the front edge of the substrate sheet 1 is preferably also released by the gripper system 17.

[0091] A further mode of operation of an embodiment as preferably provided by the Fig. 13. relates to full-sheet processing or full-sheet inspection and is described below. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system, in particular the suction gripper system 17 of the transport cylinder 3 takes over the processed, in particular trimmed, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a cover 5. The cover 5 has openings. The openings are made at the points in the cover 5 where first and / or second openings 12, 13 are formed.When the first and / or second openings 12, 13 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or are exactly at the tangent point A, a negative pressure is applied by the first and / or second air supply means 14, 15 to the first and / or second openings 12, 13, which fixes only the blanks 10 or only the waste parts 9 or the blanks 10 and the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. When the respective blanks 10 and the respective waste parts 9 reach the tangent point B as a result of the further rotation of the transport cylinder 3, the first and / or second air supply means 14, 15 are preferably deactivated. The negative pressure in the region of the first and / or openings 12, 13 is no longer present and the blanks 10 and the waste parts 9 are no longer fixed and are thus released.The fixation of the leading edges of the substrate sheets 1 by the gripper system 17 is also released at the tangent point B. When the third openings 32 of the stripping cylinder 4 reach the tangent point B and are located opposite or immediately in front of a respective blank 10 at the tangent point B, a negative pressure is applied to them. As a result of this negative pressure, a force is exerted that lifts the blanks 10 from the surface of the transport cylinder 3. Preferably, the negative pressure applied to the first and / or second openings 12, 13 of the transport cylinder 3 is deactivated when the respective first and / or second openings 12, 13 are located in the region of the tangent point B.As a result of the negative pressure preferably applied to the third openings 32, the blanks 10 and the waste parts 9 and the frames of the substrate sheets 1, including the front edges of the substrate sheets 1, which are still connected to one another by the remaining webs (full sheet), are lifted off the transport cylinder 3 at the tangent point B and transferred to the stripping cylinder 4. The transfer of the blanks 10 and the waste parts 9 and the frames of the substrate sheets 1, including the front edges of the substrate sheets 1, as a full sheet from the transport cylinder 3 to the stripping cylinder 4 can be assisted by applying positive pressure to the first and / or second openings 12, 13. The supply to the first and / or second openings 12, 13 is preferably switched from negative pressure to positive pressure when the first and / or second openings 12, 13 reach the tangent point B.The stripping cylinder 4 transports the full sheets, which are held in place by negative pressure, further in the direction of the conveyor belt 29 as a result of its rotation until they reach the transfer point or transfer area E of the stripping cylinder 4 and the conveyor belt 29. At the transfer point or transfer area E of the stripping cylinder 4 and the conveyor belt 29, a suction effect is preferably exerted on the side of the full sheets facing away from the stripping cylinder 4 by the conveyor belt 29, which is preferably designed as a suction belt. When the respective third openings 32 reach the transfer point or transfer area E, the negative pressure applied to them is also deactivated. Preferably, following the deactivation of the negative pressure at the third openings 32, an overpressure can be built up. As a result of the described forces, the full sheets are transferred from the stripping cylinder 4 to the conveyor belt 29 at the transfer point or transfer area E.The conveyor belt 29 runs on deflection rollers, at least one of which is driven, and transports the full sheets preferably to a stacking device or depositing device (not shown). After passing the transfer point or transfer area E through the third openings 32, the negative pressure applied to them can be deactivated. The deactivation ends at the latest when the third openings 32 return to the tangent point B.

[0092] According to another preferred embodiment with or without stripping cylinder 4, a peeling device 31 is assigned to the transport cylinder 3, as can be seen in particular from Fig. 14 can be seen. The peeling device 31 preferably has a support surface which extends in the direction of a virtual tangent applied to the transport cylinder 3. The support surface can be aligned horizontally. The peeling device 31 is further preferably assigned a circulating conveyor belt 29 which can be designed as a suction belt circulating over deflection rollers. The peeling device 31 is preferably assigned to the transport cylinder 3 in its 12 o'clock position or, viewed in the direction of rotation of the transport cylinder 3, immediately adjacent to its 12 o'clock position. The conveyor belt 29 preferably has a transport region 37 which is inclined horizontally or at an angle of less than 10 degrees to the horizontal. According to a preferred embodiment, the support surface formed on the peeling device 31 and the transport region 37 lie in one and the same virtual plane.Further preferably, the support surface and the transport area 37 extend in the direction of a virtual tangent applied to the transport cylinder 3.

[0093] The transport cylinder 3 and the optional stripping cylinder 4 can be designed according to those embodiments of transport cylinder 3 and stripping cylinder 4 as they are particularly used in connection with the objects according to the Fig. 9 to 13 have already been described.

[0094] The peeling device 31 has the particular function of lifting processed substrate sheets 1, waste parts 9, or blanks 10 from the surface of the transport cylinder 3 or the surface of the elevator 5 associated with it with the aid of the peeling device 31 and feeding them to the conveyor belt 29, which transports them away. Another transport system, for example in the form of a further conveyor belt 30, can be connected to the conveyor belt 29. Preferably, an overlap region is formed between the conveyor belt 29 and the further conveyor belt 30, in which processed substrate sheets 1 or blanks 10 and / or waste parts 9 can be transferred from the conveyor belt 29 to the further conveyor belt 30.

[0095] It goes without saying that instead of the further conveyor belt 30, another suitable transport system can also be designed which takes over the processed substrate sheets 1 or blanks 10 and / or waste parts 9 from the conveyor belt 29.

[0096] Instead of the additional conveyor belt 30, a container for receiving waste parts 9 can also be arranged under the conveyor belt 29.

[0097] In addition to the conveyor belt 29, a further conveyor system 76 can also be directly assigned to the conveyor cylinder 3, i.e., forming a transfer area or transfer point between the conveyor cylinder 3 and the further conveyor system 76 for processed substrate sheets 1 or blanks 10 and / or waste parts 9. This further conveyor system 76 is preferably designed as a sheet guide cylinder or sheet guide drum or chain conveyor system with gripper bars or conveyor belt.

[0098] The operation of an embodiment as preferably provided by the Fig. 14 can be described as follows. The illustrated embodiment of the device for treating substrates 1 is preferably a component of a sheet-fed printing press. The sheet-fed printing press can comprise one or more printing units 6. Further preferred are the Fig. 14. In the embodiment shown, two processing cylinders are arranged upstream, between which the substrate 1 can be inserted, wherein the substrate 1 undergoes processing as it passes through tool parts from the group of cutting tools, punching tools, creasing tools, perforating tools that are active in the cylinder gap. One of the processing cylinders is in Fig. 14. shown as a semicircle. The processing cylinder is preferably designed as a sheet transport cylinder and has a sheet holding system. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system 17, in particular the suction gripper system 17, of the transport cylinder 3 takes over the processed, in particular trimmed, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a lifting device 5. The lifting device 5 has openings and is provided with depressions at the points where it acts on the blank 10.On the one hand, perforations are made in the area of ​​the blanks 10 at the points in the elevator 5 where first openings 12 are formed, wherein the second openings 13 in the area of ​​the blanks 10 are covered, i.e. closed, by the elevator 5. On the other hand, perforations are also made in the area of ​​the waste parts 9 at the points in the elevator 5 where second openings 13 are formed, wherein the first openings 12 in the area of ​​the waste parts 9 are covered, i.e. closed, by the elevator 5. When the first openings 12 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or exactly at the tangent point A, the first air supply means 14 applies a negative pressure to the first openings 12, which fixes the blanks 10 to the outer surface of the transport cylinder 3 or to the elevator 5.As a result of the further rotation of the transport cylinder 3, the blanks 10, which have been fixed by the negative pressure, as well as the waste parts 9, reach the tangent point B, which is formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3. In the process, the remaining webs that connect the waste parts 9 to the frame or to the good parts (blanks) 10 are torn. Preferably at the tangent point B, a negative pressure is applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9, which fixes the waste parts 9 to the outer surface of the transport cylinder 3 or to the packing 5.Alternatively, the negative pressure can be applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9 even at the tangential point A or immediately thereafter. As a result of the rotation of the transport cylinder 3, the blanks 10 and the waste parts 9 are transported past the tangential point B until they finally reach the transfer point F between the transport cylinder 3 and the peeling device 31. Before the respective blanks 10 reach the transfer point F between the transport cylinder 3 and the peeling device 31, the first air supply means 14 of the transport cylinder 3 are switched from a suction air supply to a blown air supply. The negative pressure in the area of ​​the first openings 12 is reduced, so that the blanks 10 are no longer fixed and, as the overpressure builds up at the first openings 12, they are pushed off the surface of the transport cylinder 3 or its elevator 5.This means that at least the front edges of the blanks 10, viewed in the direction of rotation of the transport cylinder 3, protrude beyond the peeling device 31 in the radial direction of the transport cylinder 3. The peeling device 31 is aimed at the gap formed between the front edges of the blanks 10 and the surface of the transport cylinder 3 or its elevator 5. As a result of the rotation of the transport cylinder 3, the blanks 10 are pushed onto the support surface of the peeling device 31 until they reach the detection area of ​​the conveyor belt 29, which transports the blanks 10 away. In contrast to the first openings 12, the negative pressure applied to the second openings 13 is maintained by the second air supply means 15 when the second openings 13 pass the tangent point B until they reach the release point D. When the release point D is reached, the negative pressure applied to the second openings 13 is deactivated.In a preferred embodiment, an additional overpressure can be applied to the second openings 13 when the second openings 13 reach the area of ​​the release point D. With the aforementioned method steps, not only is the fixation of the waste parts 9 terminated upon reaching the release point D, but the lifting of the waste parts 9 is preferably assisted by pneumatic means in addition to the force of gravity. In the area of ​​the release point D, in addition to the waste parts 9, preferably also the leading edge of the substrate sheet 1 is released by the gripper system 17.

[0099] A further mode of operation of an embodiment as preferably provided by the Fig. 14, relates to full-sheet processing or full-sheet inspection and is described below. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system 17, in particular the suction gripper system 17, of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a cover 5. The cover 5 has openings. The openings are made at the points in the cover 5 where first and / or second openings 12, 13 are formed.When the first and / or second openings 12, 13 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or are located exactly at the tangent point A, a negative pressure is applied to the first and / or second openings 12, 13 by the first and / or second air supply means 14, 15, which fixes only the blanks 10 or only the waste parts 9 or the blanks 10 and the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. As a result of the further rotation of the transport cylinder 3, the blanks 10 and the waste parts 9 pass the tangent point B. Contact between the waste parts 9 or the blanks 10 and other elements does not occur at the tangent point B. The stripping cylinder 4 is switched off from the transport cylinder 3.When the respective blanks 10 and the respective waste parts 9 reach the transfer point F between the transport cylinder 3 and the peeling device 31, the first and / or second air supply means 14, 15 are deactivated or preferably switched to blast air supply. The negative pressure in the area of ​​the first and / or second openings 12, 13 is no longer present and the blanks 10 and the waste parts 9 and the frames of the substrate sheets 1, including the front edges of the substrate sheets 1 that are still connected to one another by the residual webs (full sheet), are no longer fixed and are thus released at the transfer point F and preferably lifted off in a targeted manner from the surface of the transport cylinder 3 or from the elevator 5. The fixing of the front edges of the substrate sheets 1 by the gripper system 17 is also released at the transfer point or transfer area C.As a result of the rotation of the transport cylinder 3, the full sheets are then pushed over the support surface of the peeling device 31 until they reach the effective area of ​​the conveyor belt 29, from which they are transported away.

[0100] The operation of an embodiment as preferably provided by the Fig. 15, can be described as follows. The sheet transport cylinder transfers a processed substrate sheet 1 to the transport cylinder 3 at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system 17, in particular the suction gripper system 17, of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The substrate sheet 1 preferably comprises an edge and waste parts 9 connected to this via so-called residual webs, as well as blanks 10. The transport cylinder 3 carries a lift 5. The lift 5 has openings and is provided with depressions at the points where it acts on the blank 10.On the one hand, perforations are made in the area of ​​the blanks 10 at the points in the elevator 5 where first openings 12 are formed, wherein the second openings 13 in the area of ​​the blanks 10 are covered, i.e. closed, by the elevator 5. On the other hand, perforations are also made in the area of ​​the waste parts 9 at the points in the elevator 5 where second openings 13 are formed, wherein the first openings 12 in the area of ​​the waste parts 9 are covered, i.e. closed, by the elevator 5. When the first openings 12 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or are located exactly at the tangent point A, the first air supply means 14 applies a negative pressure to the first openings 12, which fixes the blanks 10 to the outer surface of the transport cylinder 3 or to the elevator 5.As a result of the further rotation of the transport cylinder 3, the blanks 10, which are fixed by the negative pressure, as well as the waste parts 9 reach the tangent point B, which is formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3. In the process, the residual webs that connect the waste parts 9 to the frame or to the good parts 10 are torn. The packing 5 fixed on the stripping cylinder 4 has openings that correspond to the third openings 32 of the stripping cylinder 4. The openings are formed in the area of ​​the packing 5 in which it is not raised or in which it interacts with the blanks 10 in rolling contact.When the third openings 32 of the stripping cylinder 4 reach the tangent point B and are opposite a respective blank 10 at the tangent point B, a negative pressure is applied to them. As a result of this negative pressure, a force is exerted that lifts the blanks 10 from the surface of the transport cylinder 3. The negative pressure at the third openings 32 of the stripping cylinder 4 is deactivated as soon as they have left the area of ​​the tangent point B again or a few degrees, in particular 10 degrees, thereafter. Preferably, the negative pressure applied to the first openings 12 is deactivated when the respective first openings 12 are in the area of ​​the tangent point B.This ensures that the respective blank 10 is briefly lifted from the surface of the transport cylinder 3 under the effect of the negative pressure at the third openings 32 of the stripping cylinder 4, i.e. for a few angular degrees, in particular 10 degrees of the rotational movement of the transport cylinder 3. This measure additionally supports the separation of the blank 10 and waste parts 9, since these are actively moved in different directions, at least for a short time. Preferably at the tangential point B, a negative pressure is applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9, which fixes the waste parts 9 to the outer surface of the transport cylinder 3 or to the elevator 5. Alternatively, the negative pressure can also be applied via the second air supply means 15 to the second openings 13 in the area of ​​the waste parts 9 at the tangential point A or immediately thereafter.As a result of the rotation of the transport cylinder 3, the blanks 10 and the waste parts 9 are transported past the tangential point B until they finally reach the transfer point F between the transport cylinder 3 and the peeling device 31. Before the respective blanks 10 reach the transfer point F between the transport cylinder 3 and the peeling device 31, the first air supply means 14 of the transport cylinder 3 are switched from a suction air supply to a blown air supply. The negative pressure in the region of the first openings 12 is reduced, so that the blanks 10 are no longer fixed and, as the overpressure builds up at the first openings 12, are pushed off the surface of the transport cylinder 3 or its elevator 5. As a result, at least the front edges of the blanks 10, viewed in the direction of rotation of the transport cylinder 3, protrude beyond the peeling device 31 in the radial direction of the transport cylinder 3.The peeling device 31 is aimed at the gap formed between the front edges of the blanks 10 and the surface of the transport cylinder 3 or its elevator 5. As a result of the rotation of the transport cylinder 3, the blanks 10 are pushed onto the support surface of the peeling device 31 until they reach the detection area of ​​the conveyor belt 29, which causes the blanks 10 to be transported away. In contrast to the first openings 12, the negative pressure applied to the second openings 13 is maintained by the second air supply means 15 when the second openings 13 pass the tangent point B until they reach the release point D. When the release point D is reached, the negative pressure applied to the second openings 13 is deactivated. In a preferred embodiment, an additional overpressure can be applied to the second openings 13 when the second openings 13 reach the area of ​​the release point D.With the aforementioned process steps, not only is the fixation of the waste parts 9 terminated upon reaching the release point D, but the lifting of the waste parts 9 is preferably supported by pneumatic means in addition to the force of gravity. In the area of ​​the release point D, in addition to the waste parts 9, preferably also the leading edge of the substrate sheet 1 is released by the gripper system 17.

[0101] Instead of the conveyor belt 29, a further conveyor system 76 can also be assigned directly to the conveyor cylinder 3, ie, forming a transfer area or transfer point between the conveyor cylinder 3 and the further conveyor system 76 for processed substrate sheets 1 or blanks 10 and / or waste parts 9. This further conveyor system 76 is preferably designed as a sheet guiding cylinder or sheet guiding drum or sheet guiding system, in particular a chain conveyor system with gripper bars, or a conveyor belt. An embodiment with a chain conveyor system with gripper bars as a component of the delivery of a sheet-fed printing press is described in Fig. 17 .

[0102] The chain conveyor system contains traction means moved via drive and deflection means, which drive gripping devices, in particular gripper bridges, for conveying the substrate. The gripping devices have fixing elements for receiving and fixing the sheet-shaped substrates 1. Clamping and / or suction grippers for gripping the substrate edges can be used as fixing elements. In further developments not shown, additional gripping devices are provided for the substrate trailing edges. The sheet conveyor system, designed here as a chain conveyor system, contains chains laid over and driven by sprockets, guided in laterally arranged guide rails (not shown), on which gripper bridges are arranged for transporting the substrates 1. The gripper bridges convey the substrates 1 in the transport direction to the delivery stack stored, for example, on a pallet or another type of transport base.The gripper bridges preferably contain leading edge clamping grippers which have gripper fingers which interact with gripper bridges and which are arranged at a distance from one another on a gripper shaft and can be controlled by the latter.

[0103] For the safe transport of the substrates 1 held by the gripper bars, a substrate guide device and, for example, a dryer are provided in the sheet delivery. The substrate guide device has substrate guide plates facing the gripper bars, which are equipped with blown air nozzles and extend across the width of the machine. Blow boxes are arranged beneath the substrate guide plate, via which the blown air nozzles are supplied with blown air, thus forming a supporting air cushion between the substrate guide plate and the substrates 1 transported by the gripper bars. A coolant circuit can be integrated to regulate heating of the substrate guide plate in the area of ​​the dryer.In order to prevent the substrates 1 from sticking together on the delivery stack, a release agent application device (not further designated), in particular a powder device, preferably combined with a device for suctioning off the powder, is preferably provided in the area of ​​the sheet delivery.

[0104] A braking device (not further specified) is arranged in front of the delivery stack to decelerate the substrates 1 released by the gripper bars. The braking device can contain rotating suction rings and / or circulating suction belts or be designed as a follow-up gripper system. The substrates 1 decelerated by the braking device engage front stops and are thus deposited in alignment on the delivery stack. The delivery stack is preferably lowered by a stack lifting drive by the amount of the substrate thickness deposited, so that the stack surface always maintains an approximately constant level.

[0105] A further mode of operation of an embodiment, as preferably provided by the Fig. 17, is described below. The substrates 1 to be processed lie as a substrate sheet stack in the feeder 7 and are separated from this substrate sheet stack and fed one after the other either to one or more printing units 6 and printed in these or, if no printing units 6 are provided, directly to the processing unit 46. The substrate sheets 1 are processed in the processing unit 46. For this purpose, the substrate sheets 1 are fed one after the other into a cylinder gap formed between two processing cylinders and punched in such a way that a punched sheet (processed substrate sheet 1) is produced from each substrate sheet 1, which is formed from at least one blank 10 and at least one waste part 9 and a frame enclosing the latter, wherein the blank 10, waste part 9 and frame adhere to one another via material connections that are not completely severed.The processing cylinders can be designed as tool-carrying punching cylinders or embodied by printing cylinders 74 and blanket cylinders 75 of a sheet-fed printing press. The now processed substrate sheets 1 are preferably transferred to the transport cylinder 3 by a sheet transport cylinder at the tangent point A between the transport cylinder 3 and the upstream sheet transport cylinder. The sheet holding system of the sheet transport cylinder releases the processed substrate sheet 1, while the gripper system 17, in particular the suction gripper system 17, of the transport cylinder 3 takes over the processed, in particular cut, substrate sheet 1. The transport cylinder 3 preferably carries a cover 5. The cover 5 has openings. The openings are introduced at the locations in the cover 5 where openings 12, 13, in particular first and / or second openings 12, 13, are formed.Preferably, when the openings 12, 13 have passed the tangent point A as a result of the rotation of the transport cylinder 3 or are located exactly at the tangent point A, a negative pressure is applied to the openings 12, 13 by the first and / or second air supply means 14, 15, which fixes the blanks 10 or only the waste parts 9 or the blanks 10 and the waste parts 9 to the outer surface of the transport cylinder 3 or to the packing 5. As a result of the further rotation of the transport cylinder 3, the waste parts 9, preferably fixed by the negative pressure, reach the tangent point B formed between the transport cylinder 3 and the stripping cylinder 4. At the tangent point B, the raised areas of the packing 5, which is arranged on the stripping cylinder 4, contact the surfaces of the waste parts 9 and press the waste parts 9 into the recesses of the packing 5 fixed on the transport cylinder 3.In this process, the incompletely severed material connections connecting the waste parts 9 to the frame or to the blank 10 are separated, i.e., torn. It goes without saying that the raised areas of the elevator 5 can alternatively be designed as recessed areas. In this case, the corresponding areas of the stripping cylinder 4 are preferably raised. It is important that the raised or recessed areas on the transport cylinder 3 and a stripping cylinder 4 associated with it are designed in such a way that the incompletely severed material connections are separated, i.e., torn.

[0106] As a result of the rotation of the transport cylinder 3, the blanks 10 and the waste parts 9 are transported past the tangential point B until they finally reach the transfer point F between the transport cylinder 3 and the further transport system 76.

[0107] At the transfer point F, the frames with the blanks 10 adhering to them exclusively via material connections that have not been completely severed are transferred to a stacking device, in particular a delivery device, more preferably to a respective gripper bridge of the delivery device, from which they are preferably transported to a stack carrier and stacked.

[0108] When the waste parts 9 reach the transfer point F between the transport cylinder 3 and the further transport system 76, the first and / or second air supply means 14, 15 of the transport cylinder 3 maintain the suction air supply to the first and / or second openings 12, 13. Only when the waste parts 9 reach the release point D is the suction air supply to the first and / or second openings 12, 13 canceled or preferably switched to a blown air supply, so that the waste parts 9 are released or, preferably, actively ejected.

[0109] In connection with the separation processes between transport cylinder 3 and stripping cylinder 4, it proves advantageous in preferred embodiments to remove only selected material connections that have not been completely severed and to specifically maintain others in order to maintain the stability required for further transport of the frame and the panels 10 connected to it. Accordingly, it is preferably provided to remove the material connections that have not been completely severed between the rear frame part in the transport direction of the frame and the panels 10 between transport cylinder 3 and stripping cylinder 4 and to maintain the material connections that have not been completely severed between the front frame part in the transport direction of the frame and the panels 10. Furthermore, the material connections that have not been completely severed between the lateral frame parts in the transport direction of the frame and the panels (10) can also be removed.

[0110] Further preferably, the not completely severed material connections between several blanks (10) are maintained between the transport cylinder 3 and the stripping cylinder (4).

[0111] The method described above can be carried out in particular using one of the described embodiments of the device for treating substrates 1, in particular using the Fig. 17 and in relation to Fig. 17 described device.

[0112] A further preferred embodiment is particularly in Fig. 16 and will be described further below. The embodiment comprises a transport cylinder 3, which in its basic structure is similar to that shown in Fig. 2 shown transport cylinder 3, so that hereby particular reference is made to the Fig. 2 and the associated descriptions and, in addition, to the Fig. 3 to 8 including the associated descriptions. The transport cylinder 3 can be assigned a stripping cylinder 4, which in its basic design is similar to the Fig. 10 shown stripping cylinder 4, so that hereby the Fig. 10 and the associated description parts.

[0113] The transport cylinder 3 and / or the stripping cylinder 4 preferably have means for fixing a replaceable elevator 5.

[0114] In the case of a preferred embodiment with a transport cylinder 3 without an associated stripping cylinder 4, the means for feeding the replaceable packing 5 are associated with the transport cylinder 3. In the case of a further preferred embodiment with a transport cylinder 3 with an associated stripping cylinder 4, the means for feeding the replaceable packing 5 are associated with the transport cylinder 3 or the stripping cylinder 4, or with both the transport cylinder 3 and the stripping cylinder 4.

[0115] The means for feeding the replaceable packing 5 comprise, when assigned to the transport cylinder 3, a pressing means 60 that can be selectively engaged and disengaged from the transport cylinder 3, in particular pivoted on and off, and, when assigned to the stripping cylinder 4, a pressing means 61 that can be selectively engaged and disengaged from the stripping cylinder 4, in particular pivoted on and off. The pressing means 60, 61 is preferably designed as a roller or cylinder. The roller or cylinder can have an elastic surface, in particular a rubber surface. The roller or cylinder is rotatably mounted and can extend over the entire width of the respective cylinder (transport cylinder 3 or stripping cylinder 4) or only over part of its width. Likewise, the cylinder can be formed by several rollers that are aligned with one another with respect to their axis of rotation. The roller or cylinder is freely movable or, in a preferred embodiment, motor-driven.More preferably, the roller or cylinder can also be associated with a motor that drives and / or brakes the roller or cylinder. The cylinder can also be associated with a suitable braking device, for example, in the form of a friction brake.

[0116] The roller or cylinder is preferably mounted on a movable pressure arm 62, 63, to which a drive means 64, 65 is assigned, preferably in the form of a linear drive 64, 65, more preferably in the form of a pneumatic cylinder 64, 65 or an electric linear motor. The pressure arm 62, 63 is pivotable about a pivot point.

[0117] The means for feeding the replaceable packing 5 preferably comprise a guide roller 66, 67 and / or a guide rail 68, 69. Further preferably, the at least one guide roller 66, 67 is associated with a movably mounted guard 70, 71. A sensor detecting its position can be associated with the guard 70, 71.

[0118] The means for supplying the exchangeable packing 5 can further comprise a storage 72, 73 capable of accommodating a plurality of packings 5. The storage 72, 73 is designed to store at least one packing 5, while at least one further packing 5 is arranged on the transport cylinder 3 or the stripping cylinder 4, with which the stored packing 5 can be alternately exchanged. The storage 72, 73 can preferably accommodate, in addition to a packing 5 being supplied, also a packing 5 that is being removed or is to be removed. The storage 72, 73 preferably has different storage locations for a packing 5 that is being supplied and a packing 5 that is to be removed.

[0119] The means for supplying the replaceable packing 5 may further comprise a pre-positioning device, in particular positioning pins. The pre-positioning device is preferably associated with the storage device 72, 73.

[0120] To arrange a packing 5 on the transport cylinder 3, the transport cylinder 3 is first rotated into a receiving position intended for receiving the packing 5. The rotation of the transport cylinder 3 can be achieved by means of an individual drive assigned to it or via a gear train that connects the transport cylinder 3 to other cylinders in terms of drive technology and into which a main drive drives. In the receiving position, the means for fixing the front edge of the exchangeable packing 5 are at least approximately opposite the storage 72. The packing 5 to be supplied stands with its lower edge (which corresponds to the front edge when fixed on the transport cylinder 3) on a storage 72 designed as a rail 72, preferably an angled rail. According to a preferred embodiment, positioning means, for example in the form of positioning pins, which correspond to positioning recesses in the packing 5, are assigned to the storage 72.If positioning pins are provided, the positioning recesses in the packing 5 are opposite the positioning pins, and the packing 5 is pre-aligned by the assignment of the positioning recesses to the positioning pins. To feed the packing 5, the lower edge of the packing 5 is released from the rail 72 by pivoting or rotating the rail 72 using a motor, or by manually lifting the front edge of the packing 5 from the rail 72. The pivotally mounted guard 70, which preferably carries a guide roller 66 at its end, is pivoted manually or by a motor, creating an access opening through which the packing 5 can be fed to the means for securing the packing 5.As soon as the front edge of the packing 5 has passed through the access opening cleared by the guard 70 and the guide roller 66, the guard 70 is pivoted back to its original position manually or by a motor, so that the guide roller 66 contacts the packing 5 and thus the packing 5 is guided on its way to the clamping gap formed between the clamping jaw 22 and the stop 24. The packing 5 is preferably fed by the effect of gravity or, alternatively, motor-driven or manually. When the front edge of the packing 5 has reached the clamping gap, the lever 21 is pivoted and thus the front edge of the packing 5 is fixed between the clamping jaw 22 and the stop 24. The transport cylinder 3 is then rotated counterclockwise by a motor. When the front edge of the packing 5 has moved under the pressure roller 60 due to the rotation of the transport cylinder 3, the linear drive 64 is activated.The linear drive 64 pivots the pressure lever 62 until the pressure roller 60 contacts the packing 5 and presses it against the outer surface of the transport cylinder 3. The transport cylinder 3 is then rotated further counterclockwise by the motor, and in the area of ​​influence of the pressure roller 60, the packing 5 is pressed onto the outer surface of the transport cylinder 3 until the rear edge of the packing 5 reaches the clamping gap formed between the clamping jaw 47 and the stop 48. When the rear edge of the packing 5 is inserted into the clamping gap, the tensioning shaft 50 is rotated, thus closing the clamping gap. The pressure roller 60 is then pivoted away. If the packing 5 is to be removed from the transport cylinder 3 again, the pressure roller 60 remains pivoted away from the transport cylinder 3.Either the front edge or the rear edge of the packing 5 is released by the transport cylinder 3, and the transport cylinder 3 is subsequently rotated so that the packing 5 is conveyed back toward the storage device 72. Finally, the edge of the packing 5, which was still fixed until then, is released.

[0121] The arrangement of a lift 5 on the stripping cylinder 4 is comparable to the arrangement of a lift 5 on the transport cylinder 3, so that reference is preferably made to this unless differences are expressly described.

[0122] To arrange a hoist 5 on the stripping cylinder 4, the stripping cylinder 4 is first rotated into a receiving position intended for receiving the hoist 5. The rotation of the stripping cylinder 4 can be achieved using an individual drive assigned to it or via a gear train that connects the stripping cylinder 4 to other cylinders in a drive-related manner and into which a main drive drives. Preferably, the stripping cylinder 4 is driven by an individual drive, whereas the transport cylinder 3 is driven via a gear train that connects the transport cylinder 3 to other cylinders in a drive-related manner and into which a main drive drives.

[0123] In the receiving position, the means for securing the trailing edge of the replaceable packing 5 are at least approximately opposite the storage 73. The packing 5 to be fed stands with its lower edge (which corresponds to the trailing edge when fixed on the stripping cylinder 4) on a storage 73 encompassed by retaining pins 71. According to a preferred embodiment, the retaining pins are designed as positioning means in the form of positioning pins that correspond to positioning recesses in the packing 5. If positioning pins are provided, the positioning recesses in the packing 5 are opposite the positioning pins, and the packing 5 is pre-aligned by the assignment of the positioning recesses to the positioning pins. To feed the packing 5, the lower edge of the packing 5 is released from the retaining pins 71 by retracting the retaining pins 71 or by manually lifting the trailing edge off the retaining pins 71.The pivotably mounted guard 71, which preferably carries a guide roller 67 at its end, is pivoted manually or by a motor to create an access opening through which the packing 5 can be fed to the means for securing the packing 5. As soon as the trailing edge of the packing 5 has passed the access opening released by the guard 71 and the guide roller 67, the guard 71 is pivoted back to its original position manually or by a motor, so that the guide roller 67 contacts the packing 5 and the packing 5 is thus guided on its way to the clamping gap formed between the clamping jaw 22 and the stop 24. The packing 5 is preferably fed by the effect of gravity or, alternatively, motor-driven or manually. When the trailing edge of the packing 5 has reached the clamping gap, the pneumatic muscle 25 is relaxed and the trailing edge of the packing 5 is thus secured between the clamping jaw 22 and the stop 24.The stripping cylinder 4 is then rotated clockwise by a motor. When the rear edge of the packing 5 has moved under the pressure roller 61 due to the rotation of the stripping cylinder 4, the linear drive 65 is activated. The linear drive 65 pivots the pressure lever 63 until the pressure roller 61 contacts the packing 5 and presses it against the outer surface of the stripping cylinder 4. The stripping cylinder 4 is then rotated further clockwise by a motor, and in the process, within the influence of the pressure roller 61, the packing 5 is pressed against the outer surface of the stripping cylinder 4 until the front edge of the packing 5 reaches the clamping gap formed between the clamping jaw 47 and the stop 48. When the front edge of the packing 5 is inserted into the clamping gap, the tensioning shaft 50 is rotated, thus closing the clamping gap. The pressure roller 61 is then pivoted away.If the packing 5 is to be removed from the stripping cylinder 4 again, the pressure roller 61 remains pivoted away from the stripping cylinder 4. Either the front edge or the rear edge of the packing 5 is released by the stripping cylinder 4, and the stripping cylinder 4 then rotates so that the packing 5 is conveyed back toward the storage device 71. Finally, the edge of the packing 5, which was still fixed until then, is released. List of reference symbols 1 substrate, substrate sheet 2 separating device 3 transport cylinders 4 stripping cylinders 5 Elevator 6 printing unit 7 investors 8 Acceleration system 9 Waste section 10 Benefits 11 Feed direction 12 first openings 13 second openings 14 first air supply means 15 second air supply means 16 axis of rotation 17 Gripper system; suction gripper system 18 slices 19 Recess 20 Torque support 21 levers 22 Clamping element front edge, clamping jaw 23 Energy storage, spring 24 additional clamping element front edge, impact 25 Actuator, pneumatic muscle 26 Gear means, lever 27 positioning pins 28 Adjustment means suction area 29 Conveyor belt 30 additional conveyor belts 31 Peeling device 32 third openings 33 additional levers 34 Pivot point 35 ball 36 Tangent point 37 horizontal transport area 38 transfer points 39 first transport area 40 second transport area 41 printing cylinders 42 Transfer drum, sheet guiding cylinder 43 blanket cylinders 44 plate cylinders 45 inking units 46 machining center 47 Clamping element rear edge, clamping jaw 48 additional clamping element rear edge, impact 49 sleds 50 expansion shaft 51 Knee lever 52 additional actuator, pneumatic muscle 53 first feed nozzle 54 second feed nozzle 55 third feed nozzle 56 recess 57 recess 58 openings 59 Channel cover 60 pressure agents, pressure roller 61 Pressure device, pressure roller 62 Pressure arm, pressure lever 63 Pressure arm, pressure lever 64 linear actuator, pneumatic cylinder 65 linear actuator, pneumatic cylinder 66 Leadership role 67 Leadership role 68 guide rail 69 Guide rail 70 Protection 71 Protection 72 storage 73 storage 74 printing cylinders 75 blanket cylinders 76 additional transport system A Tangent point transport cylinder and upstream sheet transport cylinder B Tangent point transport cylinder and stripping cylinder C Transfer point or transfer area transport cylinder and conveyor belt D Release point E Transfer point or transfer area stripping cylinder and conveyor belt F Transfer point transport cylinder and further transport system

Claims

[1] Device for treating sheet-shaped substrates (1) with a separating device (2) with which the processed substrate (1) can be separated into at least one waste part (9) and at least one blank (10), wherein the separating device (2) comprises a transport cylinder (3) with a suction gripper system (17) with at least one suction opening for fixing the front edge of the substrate (1) and a stripping cylinder (4) assigned to the transport cylinder (3), and the transport cylinder (3) and alternatively also the stripping cylinder (4) have means for fixing an exchangeable packing (5), wherein the transport cylinder (3) and alternatively also the stripping cylinder (4) have means for feeding the exchangeable packing (5) assigned to it, wherein the transport cylinder (3) has openings (12, 13) spaced from the at least one suction opening, which openings, when the packing (5) is fixed, correspond at least partially to openings formed in the packing (5), wherein the openings (12,13) Air supply means (14, 15) for supplying the openings (12, 13) with air, and further air supply means are assigned to the at least one suction opening of the suction gripper system (17), which supply the at least one suction opening with air independently of the openings (12, 13), and wherein the at least one suction opening for fixing the front edge of the substrate (1) is arranged such that, when the elevator (5) is fixed, it is spaced from the elevator (5) in the circumferential direction of the transport cylinder (3). [2] Device according to claim 1, wherein the transport cylinder (3) has first and second openings (12, 13) and first air supply means (14) are provided for supplying the first openings (12) with air and second air supply means (15) are provided for supplying the second openings (13) with air independently of the supply of the first openings (12). [3] Device according to claim 2, wherein the first and / or the second air supply means (14, 15) are switchable between a suction air supply and a blowing air supply. [4] Device according to one or more of claims 1 to 3, wherein the means for feeding the exchangeable dressing (5) comprise a pressing means (60) which can be selectively switched on and off on the transport cylinder (3) and / or a pressing means (61) which can be selectively switched on and off on the stripping cylinder (4). [5] Device according to claim 4, wherein at least one pressing means (60, 61) is mounted on a displaceable pressing arm (62, 63). [6] Device according to claim 5, wherein the pressure arm (62, 63) is associated with a linear drive (64, 65). [7] Device according to one or more of the preceding claims, wherein the means for feeding the exchangeable winding material (5) comprise a guide roller (66, 67) and / or a guide rail (68, 69). [8] Device according to claim 7, wherein at least one guide roller (66, 67) is associated with a movably mounted guard (70, 71). [9] Device according to claim 8, wherein a sensor detecting the position of at least one protection (70, 71) is provided. [10] Device according to one or more of the preceding claims, wherein at least one means for supplying the exchangeable elevator (5) comprises a storage for one or more elevators (5). [11] Device according to one or more of the preceding claims, wherein at least one means for fixing the elevator (5) is movably mounted. [12] Device according to claim 11, wherein the means for fixing the elevator (5) is designed as a clamping element (22) of a clamping gripper, in particular as a clamping jaw (22), or carries the clamping element (22) of a clamping gripper and the clamping element (22) cooperates with a further clamping element (24). [13] Device according to at least one of the preceding claims, wherein the separating device (2) is a component of a sheet-fed printing press and at least one printing unit (6) is arranged upstream of the separating device (2).

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