EP0695707B1 - Einrichtung zum berührungsfreien Führen bogenförmigen Materials - Google Patents
Einrichtung zum berührungsfreien Führen bogenförmigen Materials Download PDFInfo
- Publication number
- EP0695707B1 EP0695707B1 EP95110718A EP95110718A EP0695707B1 EP 0695707 B1 EP0695707 B1 EP 0695707B1 EP 95110718 A EP95110718 A EP 95110718A EP 95110718 A EP95110718 A EP 95110718A EP 0695707 B1 EP0695707 B1 EP 0695707B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- blowing nozzles
- guide
- conveying direction
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
- B65H5/228—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by air-blast devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/52—Stationary guides or smoothers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
- B65H2406/111—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along a curved path, e.g. fluidised turning bar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
- B65H2406/113—Details of the part distributing the air cushion
- B65H2406/1132—Multiple nozzles arrangement
Definitions
- the invention relates to a device for non-contact Perform sheet material, especially through a Printing machine, preferably by a sheet-fed printing machine, the material being dragged along a trajectory with a distance from the trajectory Air-blowing nozzle guide surface.
- suction and blowing air devices known generate a suction or blown air flow
- the air flow acts on the arch through openings in the guide surface.
- a suction air and / or blown air flow generating facilities can be achieved that the Arch through the air duct on a specific one
- the trajectory remains, but there is no freedom of contact can be guaranteed with the guide surface, since the vertically on the air currents acting a flutter, in particular of the bow end, cannot prevent.
- By alternating It can act on the bow with suction and blowing air especially in the area of suction air to lubricate the Bow come.
- a device which only has air blowing nozzles, wherein related blow nozzle pairs under one different exit angles intersecting Generate air currents with which a dragged bow is applied.
- This special embodiment of the Blown air flow is said to be a suction and a Apply a supporting effect to the sheet being conveyed.
- the nozzles are arranged so that each of the blown air Nozzle is directed towards the outlet opening of the next.
- the Leadership is unsatisfactory.
- the invention lies hence the task of setting up the Generic type to create a non-contact Guide sheet material regardless of it Format and its grammage, with different Machine speeds in all areas Processing machine, in particular a printing press, in simple and inexpensive way is possible.
- the gap flow between the material and the guiding surface ensure the formation of a uniform film of air on which the material is guided becomes. A flutter movement, especially the trailing edge of the Material is avoided.
- the Guide surface at least two in the direction of movement (Conveying direction) of the material successive zones, preferably one Entry zone, a guide zone and / or an exit zone, with each by appropriate training and / or arrangement of Air-blowing nozzles caused different flow patterns having. This makes it advantageously possible to mutually independent change of the Flow parameters in the zones one behind the other reach, so that on the special, on the respective Functions of the individual zones coordinated flow patterns Can be influenced.
- the guiding surface can thus have different functional features Requirements are influenced. According to the functional requirements can be different Influencing the leadership effect by a corresponding adapted change of the different flow patterns respectively. A towed over the respective guide surface sheet material is thus successively with a acted on different flow pattern, whereby a flutter-free and smear-free movement of the material is guaranteed.
- FIG. 1 shows schematically a generally designated 10 Sheet printing machine.
- the sheet-fed printing machine 10 has one Feeder 12, one or more, four in the example shown Printing units 14, a coating system 16 and a delivery arm 18.
- the printing units 14 do not consist of here explanatory printing cylinders 20 and further cylinders 22 and dampening and inking cylinders 24.
- sheet guide cylinders 26 and turning cylinders 28 can be provided.
- guide surfaces 32 designated sheet guide devices arranged.
- the Baffles 32 can be both flat and concave or have convex curved shape and are in areas arranged along the trajectory of the sheet 30, with the Aim to keep the sheets from touching during transport with the guide surfaces 32 and other machine parts of the Received sheet printing machine 10.
- the sheets 30 are in one Distance to the guide surfaces 32 by not shown Gripper systems dragged along their trajectory, which at attack the leading edge of the sheet 30.
- the guide surfaces 32 are between the feeder 12 and the first printing unit 14, between the individual printing units 14 in the area of Bow guide cylinder 26 and the turning cylinders 28 and in Boom 18 arranged.
- the guide surfaces 32 can continue with dryer sections not to be considered here and Feeds to the pressure cylinders 20 can be combined.
- the Guide surfaces 32 can - seen in the sheet conveying direction 34 - be designed as a continuous unit, that is, it is formed in one piece.
- the continuous guide surface 32 can also be constructed in such a way that it consists of one after the other arranged, separate sections 36, which is still in are composed to be illustrative.
- Figure 1 is indicated that, for example, that arranged in the boom 18 Guide surface consists of two sections 36.
- the around the Cylinder arranged concave or convex curved Baffles 32 can also consist of individual sections exist, which in turn together form an uninterrupted Guide surface 32 result.
- the individual guide surfaces 32 are over a supply line system 38 with a blower 40 connected. In operation of the sheet-fed printing machine 10, the Blower 40 the supply line system 38 with a Blown air acts on the guide surfaces 32nd arranged air outlet nozzles and there the Guide air for the sheet 30 forms.
- FIG. 2 is a top view of a guide surface 32 shown.
- the guide surface 32 can be a flat as well have a concave or convex curve and is so arranged to be substantially parallel to that through the Gripper system predetermined movement path for the sheet 30 runs.
- the sheet 30 is moved along by the gripper system of the guide surface 32, this being contact-free, in particular with regard to the trailing edge of the sheet should.
- the distance of the guide surfaces 32 to the gripper system is approximately 5 to 30 mm to avoid collisions between the Prevent gripper system and the guide surface 32.
- the Guide surface 32 has at its 34 in the sheet conveying direction front end 42 arranged transversely to the sheet conveying direction 34 Cutouts 44, the individual grippers of the gripper system are assigned so that they move in the Can reach area of the guide surface 32 without this collide.
- the guide surfaces 32 have a smooth Surface 46. As already mentioned, they can be made in one piece, for example from a sheet metal or also across Sheet conveying direction 34 arranged individual segments exist that are interconnected. The connection of the individual segments is done so that the surfaces 46 of the individual segments merge into one another flush and in alignment.
- Air-blowing nozzles 48 are in the surface 46 of the guide surfaces 32 let in, with that shown in Figure 1 Supply line system 38 for blown air are connected.
- all air blowing nozzles 48 can have a guide surface 32 through an appropriate channel design below the Guide surfaces 32 can be connected to a supply line.
- the air blowing nozzles 48 each have an air outlet opening 50, from which blown air jets 52 emerge. The sum of the Blown air jets 52 all on a guide surface 32 arranged air blowing nozzles 48 generates the guide air for the sheets 30 dragged over the guide surface 32, whereby sets a certain flow pattern according to the invention.
- the arrangement of the air blowing nozzles 48 is shown in FIG clarifies.
- On the surface 46 of the guide surface 32 is a first row of air blowing nozzles 48 side by side arranged.
- the air blowing nozzles 48 are at a distance A. to each other.
- According to the design of the Air outlet opening 50 of each air blowing nozzle 48 has the exiting blast air jet 52 a certain Divergence area 54.
- the divergence area 54 widens funnel-shaped in the sheet conveying direction 34.
- the Air-blowing nozzles 48 are arranged downstream of one in the sheet conveying direction 34 staggered, second row are arranged so that they at the intersection 56 of the side edges of the Divergence areas 54 of the upstream air-blowing nozzles 48 are located.
- Air blowing nozzles 48 upstream of the intersection 56 is the Distance of air blowing nozzle 48 to intersection 56 in Sheet conveying direction 34 preferably at most half Distance A between two adjacent air blowing nozzles 48 upstream row.
- the three are in FIG Possibilities of arranging the downstream air blowing nozzles 48 shown.
- the left air blowing nozzle 48 is - as mentioned - at the intersection 56, the middle air blowing nozzle 48 after the Intersection 56 and the air blowing nozzle 48 shown on the right arranged in front of the intersection 56 at the appropriate distance.
- FIGS 48 The structure of the air-blowing nozzles is shown in FIGS 48 clarifies.
- the sectional view in FIG. 4 shows that the guide surface 32 at the points where the Air blowing nozzles 48 are arranged, having openings 58 in which the air blowing nozzles 48 flush with the surface 46 of the Air guide surface 32 are used.
- the air blowing nozzles 48 each consist of a rotationally symmetrical nozzle bed 60, in which a nozzle plate 62 is inserted, for example is glued, the arcuate air outlet opening 50th having. Below the air outlet opening 50 is at the Nozzle plate 62 another plate 64 at an angle ⁇ arranged to surface 46.
- the angle ⁇ is preferably 25 °.
- the side surfaces of the nozzle bed 60 reach through the associated opening 58 and have one Thread 65, on which a nut can be screwed so that the Air blowing nozzle 48 can be fixed in position on the guide surface 32.
- the air blowing nozzle 48 consists essentially of rotationally symmetrical parts, the manufacturing technology simply by bending, punching, laser cutting, embossing, Extrusion, deep drawing or by injection, pressure or Investment casting can be made. Due to the The air-blowing nozzles 48 can have a rotationally symmetrical design in the openings 58 with respect to the sheet conveying direction 34 can be easily twisted and aligned. Based the plan view shown in FIG.
- the opening angle ⁇ can vary depending on the application and arrangement of the air blowing nozzles 48, in ranges from 15 ° to Extend 90 °. With certain arrangements Opening angle ⁇ is also possible up to 360 °.
- the air blowing nozzles 48 are designed in such a way that Flow course of the supply line system 38 provided air constrictions before the respective Air outlet opening 50 result in a pressure increase to lead.
- the potential energy (form) of the Air in the air blowing nozzle 48 in a particularly favorable manner kinetic energy implemented so that the air with high Speed in the gap between the Bow 30 and the guide surface 32 can flow. So that will the spread of the air into a flow pattern with a closed film supporting sheet 30.
- the guide surfaces 32 are arranged in areas are, in which 30 high on the arch passed Centrifugal forces, for example in concave or convex curvature Guide surfaces 32, or in which on the guide surfaces 32nd opposite side of the sheet 30 air knife from dryers attack that act in the direction of the guide surface 32 can to Compensate for this increased action of the angle ⁇ in particular be increased to 60, so that a Impulse force component of the generated gap flow to Compensation for these influences results.
- the guide surface 32 which is in the sheet conveying direction 34 is carried out continuously - especially in one piece - individual in the sheet conveying direction 34 one behind the other have functional zones.
- Figure 6 shows one such trained guide surface 32.
- a guide surface 32 from a plurality of sections 36 arranged one behind the other exists e.g. each by a gap from each other are divided into functional zones preferably for each section 36.
- the guide surface 32 has successively an entry zone 66, one Guide zone 68 and an outlet zone 70.
- a Guide surface 32 without this zone division has only a zone corresponding here to the guide zone 68.
- Zones 66, 68 and 70 are functional at the respective Requirements placed on these, as well as regarding adapted to their task within the entire guiding surface 32.
- the differences can be in the arrangement and / or orientation of air blowing nozzles 48, including their different ones Equipment with regard to that in FIGS. 4 and 5 shown angles ⁇ and / or ⁇ exist.
- the inlet zone 66 is designed so that an incoming Sheet 30 is tightened against the sheet conveying direction 34.
- their blast air jets 52 are in opposite directions aligned air blowing nozzles 48 offset in two rows arranged to each other.
- an in the inlet zone 66 the sheet 30 entering and tightened Floating position stabilized and thus ensures that the Sheet 30 flutter-free into the following guide zone 68 can break in.
- the entry zone 66 can either aligned with the entire guide surface 32, that is flat or with a suitably adapted concave or convex Curvature.
- the leading edge area can be flat be formed or, as FIG. 7 shows in more detail, rounded off.
- the opposite of the sheet conveying direction 34 directed blast air jets 52 prevent at the same time an influence from the guide surface 32 upstream Areas caused by flow of guide air as a result of Gap flow between the guide surface 32 and one above guided sheet 30.
- the inlet zone 66 has the recesses 44 for the sheet 30 gripper, so that a kind Gearing in the area of the inlet zone 66 is given to minimal gap openings between the guide surface 32 and the To be able to adhere to sheet 30.
- the guide zone 68 adjoining the inlet zone 66 takes over the contact-free guiding of the sheet 30 in this Area of the guide surface 32.
- the arrangement of the air blowing nozzles 48 is chosen so that the resultant is the Blown air jets 52 all arranged in the guide zone 68 Air blowing nozzles 48 a speed component of the Gap flow in sheet conveying direction 34, another Speed component starting from the middle of the curve one side edge and another Speed component to the other side edge of the Bow 30 sets.
- the latter two Speed components can preferably be symmetrical to each other.
- the arrangement of the air blowing nozzles 48 can be of those explained in FIGS. 2 and 3 Orders differ when the condition of the three required velocity components of the gap flow is satisfied.
- the air blowing nozzles 48 are like this in any case arranged that they are not mutually exclusive disturb, that is, the blowing air jets 52 of an air blowing nozzle 48 not the blast air jets 52 from another air blast nozzle 48 compensate, swirl or the like.
- the guide zone 68 adjoins in the sheet conveying direction 34 the outlet zone 70, which also - like the inlet zone 66 - one from the guide surface 32, that is from the Path of movement of the bow 30 facing rounding, like figure 7 shows in more detail.
- the outlet zone 70 can, however also be formed without this rounding, that is to say abruptly abort.
- the constructive alignment of the outlet zone 70 depends on those on the guide surface 32 subsequent machine elements.
- the guide surface 32 is on Subordinate machine element, their contact by the Sheet 30 is to be avoided, the outlet zone 70 is higher or the same height as the following management system arranged.
- the sheets 30 should be in the area of influence of machine elements of the following Guide device, for example a front brand, one Bow brake, a bow roller, etc., is brought the outlet zone 70 lower to a maximum of the same height arranged.
- the outlet zone 70 has an arrangement of Air blowing nozzles 48 in such a way that their blowing air jets 52 are directed transversely to the sheet conveying direction 34.
- the Air-blowing nozzles 48 are symmetrical in the outlet zone 70 arranged so that from the center of the arch to both lateral edges an evenly directed Flow pattern of the gap flow results. This will prevents the trailing edge of the sheet 30 from leaving of the guide surface 32 start to flutter and lubricate can.
- the Leading air that is, the gap flow that is in the Guide zone 68 sets on the guide surface 32nd subordinate management institutions can impact.
- On Outflow of the guide air that is, the air that sets in Gap flow between the guide surface 32 and the arc 30, is thus guaranteed in the side areas, so that at following critical management facilities Fluttering movements etc. of the trailing edge of the sheet is prevented.
- FIG Sheet guide cylinder 26 The transition from one is shown schematically in FIG Sheet guide cylinder 26 to a downstream cylinder, for example, a pressure cylinder 20 is shown.
- the cylinders rotate around their axis and thus give the Sheet conveying direction 34 before.
- the sheet 30 is thereby Gripper, not shown, around the sheet guiding cylinder 26 led and also not shown Transfer devices of the pressure cylinder 20 passed.
- the Sheet feed cylinder 26 is a curved guide surface 32 assigned, the surface 46 parallel to the jacket of the Cylinder 26 runs.
- the guide surface 32 has one Guide zone 68 and one of the desired trajectory the curve 30 facing away 71 with a Outlet zone 70.
- the outlet zone 70 also has this Air bubble nozzles indicated by arrows 48.
- the at the outlet zone 70 adhering parts of the gap flow 74 flow against the Direction of rotation of the cylinder 20 (indicated by arrow 84).
- the rotary movement of the cylinder 20 forms on it Surface of a boundary layer 86, which is for a partial air flow in the area of the vortex and accumulation zone 82. Due to the Training of the vortex and accumulation zone 82 becomes too wide Deflection of the arch 30 due to the centrifugal and Thrust 80 avoided. At the same time it also becomes a Prevents contact with the outer surface of the cylinder 20.
- FIGS. 14 to 16 are different exemplary embodiments of guide surfaces 32 with inlet zones 66, guide zones 68 and Outlet zones 70 shown. Which of the guide surfaces 32 for which application or which installation location within the Printing machine 10 is provided depends on the size the risk of smearing over the guide surfaces 32 guided sheet 30. At uncritical points can Baffles 32 without a separately formed inlet zone 66 and Outlet zone 70 may be provided.
- Nozzle arrangement of the air blowing nozzles 48 is that about the entire guide surface 32 or at least over the Guide zone 68 sets a gap flow, the one Speed component on average of all air blowing nozzles 48 in sheet conveying direction 34, another Speed component starting from the middle of the curve one side edge and another Speed component on the other side edge of the each arc 30 has.
- the single ones Air blowing nozzles 48 are arranged so that their Do not interfere with air flows.
- the second air blowing nozzles 48 ′′ are included offset from one another transversely to the sheet conveying direction 34 arranged rows, the blown air jets the air blowing nozzles 48 '' at an angle other than 90 ° - Relative to the sheet conveying direction 34 - symmetrical to the Point side edges in the sheet conveying direction 34.
- the second Air blowing nozzles 48 '' are in successive rows each offset from one another.
- the blown air jets of the air blowing nozzles 48 ′′ always point in one of two in here Blowing direction of the second air blowing nozzles 48 '' below arranged air blow nozzles 48 '' formed gap.
- first air blowing nozzles 48 ' arranged, whose blowing air jets essentially in Sheet conveying direction 34 are directed.
- the second air blowing nozzles 48 ′′ are provided in relation to one another offset transversely to the sheet conveying direction 34 Arranged rows, the first air blowing nozzles 48 'with each a second row of air blowing nozzles 48 '' on one Height.
- the second air blowing nozzles 48 ′′ point with their Blown air jets at an angle other than 90 ° - in relation to the sheet conveying direction - symmetrical to the Side edges of the guide surface 32.
- the second air blowing nozzles 48 '' are staggered in two consecutive rows arranged to each other that the blowing air jets of the second Air blowing nozzles 48 ′′ essentially in the blowing direction downstream air blowing nozzle 48 '' in the sheet conveying direction 34 subsequent row of the second air blowing nozzles 48 '' directed is.
- first air blowing nozzles 48 ' are provided, which in the blow substantially in the sheet conveying direction 34 and on a imaginary center line of the guide surface 32 are arranged.
- Rows of second air blast nozzles 48 '' are shown in immediately following rows in such a way arranged to each other that these are not symmetrical to each other are offset. This means that the Blowing air jets of the second air blowing nozzles 48 '' in essentially on an air blowing nozzle 48 '' the next row of the second air blowing nozzles 48 '' are.
- FIGS. 12 and 13 there are exemplary embodiments shown, in which the first air blowing nozzles 48 'in turn an imaginary center line in the sheet conveying direction 34 Guide surface 32 are arranged and their blowing air jets in point essentially in the sheet conveying direction 34.
- the second Air blowing nozzles 48 ′′ are in turn offset from one another Rows arranged transversely to the sheet conveying direction 34, the Blowing air jets of the second air blowing nozzles 48 '' in essentially symmetrical transverse to the sheet conveying direction 34 each directed to the side edges of the guide surface 32 are.
- the exemplary embodiments in FIGS. 12 and 13 differ only in the number of second Air blowing nozzles 48 '', each arranged on a row are.
- an inlet zone 66 which is parallel in two has mutually extending rows of air blowing nozzles 48, whose blowing air jets are directed opposite to each other are.
- a first row of air-blowing nozzles 48 point with their Blown air jets essentially in the sheet conveying direction 34, while the second row of air blowing nozzles 48 with their Blown air jets essentially opposite to the Show sheet conveying direction 34.
- the air blowing nozzles 48 the the two rows are symmetrically offset from one another arranged.
- Air-blowing nozzles 48 are formed by first air-blowing nozzles 48 ' again on an imaginary center line of the guide surface 32 are arranged and second air-blowing nozzles 48 '' which run in the transverse direction arranged to the sheet conveying direction 34 rows are formed.
- the second air blowing nozzles 48 ′′ are closed the air blowing nozzles 48 '' arranged in the adjacent row so staggered that one in Arc conveying direction 34 pyramid-like structure of the second air blowing nozzles 48 ''.
- the blown air jets the second air blowing nozzles 48 ′′ are essentially on an air blast nozzle 48 '' directed in an in Sheet conveying direction 34 is arranged downstream.
- the air-blowing nozzles 48 are in two in the outlet zone 70 rows arranged parallel to each other, wherein whose blown air jets are aligned so that a running symmetrically transverse to the sheet conveying direction 34 Flow pattern results.
- Guide surface 32 has an inlet zone 66 which corresponds to that shown in FIG shown shown.
- the second air blowing nozzles 48 '' are in successive rows offset to each other so that their blown air jets into one of the second air blowing nozzles in the direction of blowing air 48 '' downstream air blow nozzles 48 '' formed Gap are addressed.
- the air blowing nozzles 48 of the outlet zone 70 are arranged here in a row and point with their Blowing air jets symmetrically across the sheet conveying direction 34.
- FIG. 16 shows an exemplary embodiment in which in the inlet zone 66 in turn offset to two Rows transverse to the sheet conveying direction 34 air blowing nozzles 48 are arranged; as already for Figures 14 and 15 mentioned.
- the guide zone 68 here are also transverse to the sheet conveying direction 34 rows of air blowing nozzles 48 arranged, the blowing air jets each essentially are directed in the sheet conveying direction 34.
- FIG. 17 shows a further sheet printing machine 10 shown schematically in an overall view. Same parts as in Figure 1 are provided with the same reference numerals and not explained again. Using the shown in Figure 17 Illustration is intended to show possible variants of the air supply the guiding surfaces 32 are entered.
- the guide surfaces 32 can in turn be a plane as well as a concave or convex have a curved shape.
- the guide surfaces 32 it is possible to underneath the guide surfaces 32 to arrange separate air supply units that are designed, for example, as a square tube and Part of that shown in Figure 1 Supply line system 38 are.
- the guide surface 32 itself as a hollow body, for example be designed as a tin box
- the bow 30 facing side receives the air blowing nozzles 48.
- the bow 30 facing side then either has openings 58 ( Figure 4) for receiving the air blowing nozzles 48 or these in the wall associated with the arch 30, for example stamped directly.
- the guide surface 32 Cavity can be constructive, for example through the arrangement divided into individual separate segments by partitions his.
- the segments can either in the sheet conveying direction 34 or also run transversely to the sheet conveying direction 34.
- a guide zone 68 and one Outlet zone 70 each of these zones has its own segment be assigned.
- the individual segments can, in turn, according to the embodiment shown in Figure 1 either together to the supply line system 38 or each be connected to this via a separate line.
- All guide surfaces 32 of a sheet-fed printing machine 10 are thus via a central blower 40 with the blown air provided.
- it is also possible to have several separate ones To provide fans 40 and so for example everyone individual printing unit 14 assigned guide surfaces 32 each assign a blower 40. This will make each blower 40 associated supply line system 38 reduced and thus reducing the occurrence of supply losses.
- a another possibility is to direct the guide surfaces 32 To assign blowers 88, which are located directly on the guide surfaces 32, that is, arranged below this. This goes from the Figure 18. This is a further reduction of Loss of supply possible. Furthermore, a direct Assignment of the blowers 88 to the guide surfaces 32 a suction of the air possible where it occurs as exhaust air, that is after being used as guide air for the sheets 30, provided to the side of the sheet edges or from Outflow openings of the guide surfaces 32. This makes it very advantageous to influence other machine parts of the Sheet printing machine 10, for example the printing cylinder 20, by the sheet 30 for the contact-free guidance used guide air (gap flow 74) largely avoided. If necessary, this exhaust air can be suitably Air guiding devices fed directly to the blowers 88 with an addition from outside the Sheet printing machine 10 available fresh air in the desired Mixing ratio, that is from 0 to 100% depending on Requirement, is possible.
- the individual segments or components of a guide surface 32 can, for example, with standardized dimensions be carried out so that their easy interchangeability and Adaptation to the respective application is possible without any problems is.
- an exchange of individuals Guide surfaces 32 take place in a sheet-fed printing machine 10 if due to the material to be processed, i.e. the sheet 30, a different configuration of the guide surface 32, for example with or without entry and / or exit zones 66 or 70 becomes necessary. This can be done in the shortest possible time a conversion of the printing machine 10 to the new Requirements.
- On details of the mechanical Attachment of the guide surfaces 32 to the printing press 10 and assembling the individual segments of a guide surface 32 should not be included in the scope of the invention.
- the individual Baffles 32 especially at their critical junctions from or to a guide device, viewing window 90 be assigned through which an observation of the Guiding effect of the guide surfaces 32 is possible.
- the Viewing windows 90 are each an operating point 92 assigned to influence the air supply the guide surface 32 or an air duct of the guide surface 32 itself is possible.
- About the control points 92 can for example the flow parameters of the supplied air, it is irrelevant here whether a central blower 40 ( Figure 1) or decentralized blowers 88 are provided, to be changed. For example, regulation of the Nozzle pre-pressure, the volume flow and / or the Air flow rate.
- the guide surfaces 32 or the individual segments of the Guide surfaces can be assigned 32 throttle elements, which in the Supply lines to the guide surfaces 32 or directly in these are arranged. This makes it independent of each other Influencing the flow parameters of individual guide surfaces 32 or individual segments of the guide surfaces 32 possible.
- Arrangement of decentralized fans 88 can Fan speed can be regulated, for example, so that this influences the flow parameters.
- decentralized control of individual flow parameters becomes a non-reactive regulation on other control surfaces 32 possible.
- the setting can be both manually at the control points 92, as well as automatically via a central electronic control. With With the help of the control points 92, a Readjustment of individual areas, i.e. individual ones Guide surfaces 32 or individual segments of the guide surfaces 32 respectively.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Description
- Figur 1
- eine schematische Seitenansicht einer Bogendruckmaschine;
- Figur 2
- eine Leitfläche einer Bogendruckmaschine in Draufsicht;
- Figur 3
- eine Anordnungsmöglichkeit von Luftblasdüsen auf einer Leitfläche;
- Figur 4
- schematisch eine Luftblasdüse in seitlicher Schnittdarstellung;
- Figur 5
- schematisch eine Luftblasdüse in Draufsicht;
- Figur 6
- eine Leitfläche in Draufsicht gemäß einem weiteren Ausführungsbeispiel;
- Figur 7
- schematisch einen Übergang zwischen zwei Abschnitten einer Leitfläche,
- Figur 8
- einen Übergang zwischen einem Abschnitt einer Leitfläche und einem Zylinder;
- Figuren 9 - 16
- Anordnungsmöglichkeiten von Düsen auf einem 9 bis 16 Abschnitt einer Leitfläche und
- Figur 17
- schematisch eine Seitenansicht einer Bogendruckmaschine in einer weiteren Ausführung.
Claims (30)
- Einrichtung zum berührungsfreien Führen bogenförmigen Materials, insbesondere durch eine Druckmaschine, vorzugsweise durch eine Bogendruckmaschine, wobei das Material entlang einer Bewegungsbahn geschleppt wird, mit einer im Abstand zur Bewegungsbahn verlaufenden, Luftblasdüsen aufweisenden Leitfläche,
dadurch gekennzeichnet,
daß die Leitfläche (32) in einer Führungszone (68) derart angeordnete und/oder ausgerichtete Luftblasdüsen (48) aufweist, daß deren beim Führen des bogenförmigen Materials (30) sich ausbildendes gemeinsames Strömungsbild (Spaltströmung 74) im wesentlichen bestimmt ist durch eine erste Geschwindigkeitskomponente in Bewegungsrichtung des Materials (30) sowie eine zweite und eine dritte Geschwindigkeitskomponente, die in Richtung der beiden Seitenränder der Bewegungsbahn weisen, wobei die zweite Geschwindigkeitskomponente dem einen und die dritte Geschwindigkeitskomponente dem anderen Seitenrand zugeordnet ist. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die zweite und dritte Geschwindigkeitskomponente symmetrisch zu den Seitenrändern weisen. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Leitfläche (32) von der Führungszone (68) gebildet wird. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Spaltströmung (74) in Bogenförderrichtung (34) trompetenförmig aufgeweitet ist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) in der Führungszone (68) in zueinander versetzten Reihen quer zur Bogenförderrichtung (34) angeordnet sind. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) einer in Bogenförderrichtung (34) nachgeordneten Reihe relativ zu einem Schnittpunkt (56) von Rändern von Divergenzbereichen (54) von Blasluftstrahlen von jeweils zwei versetzt vorgelagerten Luftblasdüsen (48) angeordnet sind. - Einrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) - in Förderrichtung betrachtet - nach dem Schnittpunkt (56) angeordnet sind. - Einrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) - in Förderrichtung betrachtet - vor dem Schnittpunkt (56) angeordnet sind. - Einrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß der Abstand zum Schnittpunkt (56) höchstens den halben Abstand (A) der vorgelagerten Luftleitdüsen (48) voneinander beträgt. - Einrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß die Luftleitdüsen (48) im Schnittpunkt (56) angeordnet sind. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) in der Führungszone (68) von ersten Luftblasdüsen (48') und zweiten Luftblasdüsen (48'') gebildet werden, wobei die ersten Luftblasdüsen (48') auf einer in Bogenförderrichtung (34) verlaufenden Mittellinie der Leitfläche (32) angeordnet sind und deren Blasluftstrahlen im wesentlichen in Bogenförderrichtung (34) gerichtet sind, und die zweiten Luftblasdüsen (48'') in zueinander versetzten, quer zur Bogenförderrichtung (34) verlaufenden Reihen angeordnet sind und deren Blasluftstrahlen symmetrisch zu den Seitenrändern der Leitfläche (32) gerichtet sind. - Einrichtung nach Anspruch 11,
dadurch gekennzeichnet,
daß die Blasluftstrahlen der zweiten Luftblasdüsen (48'') in einem zwischen 0° und 90° liegenden Winkel, bezogen auf die Bogenförderrichtung (34) symmetrisch zu den Seitenrändern der Leitfläche (32) gerichtet sind. - Einrichtung nach Anspruch 12,
dadurch gekennzeichnet,
daß die Blasluftstrahlen der zweiten Luftblasdüsen (48'') in eine von zwei in Blasrichtung nachfolgend angeordneten zweiten Luftblasdüsen (48'') gebildete Lücke gerichtet sind. - Einrichtung nach Anspruch 12,
dadurch gekennzeichnet,
daß die Blasluftstrahlen der zweiten Luftblasdüsen (48'') im wesentlichen auf eine in Blasrichtung nachfolgend angeordnete Luftblasdüse (48'') gerichtet sind. - Einrichtung nach Anspruch 14,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48'') in einer pyramidenartigen Struktur auf der Leitfläche (32) angeordnet sind. - Einrichtung nach Anspruch 12,
dadurch gekennzeichnet,
daß die Blasluftstrahlen der zweiten Luftblasdüsen (48'') im wesentlichen auf eine in Blasrichtung in einer übernächsten Reihe nachfolgend angeordneten zweiten Luftblasdüse (48'') gerichtet sind. - Einrichtung nach Anspruch 12,
dadurch gekennzeichnet,
daß die Blasluftstrahlen der zweiten Luftblasdüsen (48'') im wesentlichen quer zur Bogenförderrichtung (34) gerichtet sind. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Leitfläche (32) eine der Führungszone (68) in Bogenförderrichtung (34) vorgelagerte Einlaufzone (66) und/oder eine dieser nachgelagerte Auslaufzone (70) aufweist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Einlaufzone (66) mehrere, wenigstens vorzugsweise eine Reihe von gegen die Bogenförderrichtung (34) wirkende Luftblasdüsen (48) aufweist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Auslaufzone (70) mehrere, wenigstens vorzugsweise eine Reihe von quer zur Bogenförderrichtung (34) wirkende Luftblasdüsen (48) aufweist. - Einrichtung nach Anspruch 20,
dadurch gekennzeichnet,
daß die Luftblasdüsen (48) symmetrisch quer zur Bogenförderrichtung (34) wirken. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Einlaufzone (66) und/oder die Auslaufzone (70) eine von der Bewegungsbahn des Materials (30) weggerichtete Abrundung (71, 73) aufweist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Einlaufzone (66) wenigstens eine quer auf den Bogen (30) blasende Luftblasdüse (76) vorgelagert ist. - Einrichtung nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet,
daß die Leitfläche (32) aus wenigstens zwei Abschnitten (36) besteht, die jeweils eine Führungszone (68), eine Einlaufzone (66) und/oder eine Auslaufzone (70) aufweisen. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Leitfläche (32) bzw. deren Einlaufzone (66) an ihrem vorderen Ende (42) Aussparungen (44) für Greifer einer Material-Schleppeinrichtung aufweisen. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Leitflächen (32) über ein zentrales Gebläse (40) mit Blasluft versorgt werden. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Leitflächen (32) über ein dezentrales Gebläse (88) mit Blasluft versorgt werden. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß den Leitflächen (32) Sichtfenster (90) und/oder Bedienungsstellen (92) zugeordnet sind, über die eine Beobachtung und/oder Einstellung der Führungswirkung der Leitflächen (32) durchführbar ist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Sichtfenster (90) in Übergangsbreichen (Einlaufzone 66, Auslaufzone 70) der Leitflächen (32) angeordnet sind. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß über die Bedienungsstellen (92) eine Beeinflussung von Strömungsparametern der von den Gebläsen (40, 88) bereitgestellten Führungsluft möglich ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4427448 | 1994-08-03 | ||
DE4427448A DE4427448B4 (de) | 1994-08-03 | 1994-08-03 | Einrichtung zum berührungsfreien Führen bogenförmigen Materials |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0695707A2 EP0695707A2 (de) | 1996-02-07 |
EP0695707A3 EP0695707A3 (de) | 1997-01-15 |
EP0695707B1 true EP0695707B1 (de) | 2000-11-08 |
Family
ID=6524816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95110718A Expired - Lifetime EP0695707B1 (de) | 1994-08-03 | 1995-07-10 | Einrichtung zum berührungsfreien Führen bogenförmigen Materials |
Country Status (4)
Country | Link |
---|---|
US (1) | US5687964A (de) |
EP (1) | EP0695707B1 (de) |
JP (1) | JP3655670B2 (de) |
DE (3) | DE4427448B4 (de) |
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-
1994
- 1994-08-03 DE DE4427448A patent/DE4427448B4/de not_active Expired - Lifetime
- 1994-08-03 DE DE4447963A patent/DE4447963B4/de not_active Expired - Lifetime
-
1995
- 1995-07-10 DE DE59508834T patent/DE59508834D1/de not_active Expired - Lifetime
- 1995-07-10 EP EP95110718A patent/EP0695707B1/de not_active Expired - Lifetime
- 1995-08-03 JP JP19837495A patent/JP3655670B2/ja not_active Expired - Lifetime
- 1995-08-03 US US08/510,977 patent/US5687964A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006017461B4 (de) | 2005-05-02 | 2022-06-09 | Heidelberger Druckmaschinen Ag | Verfahren und Vorrichtung zum Tragen eines Bedruckstoffbogens auf einem Luftpolster |
DE102014204797A1 (de) | 2013-03-15 | 2014-09-18 | Koenig & Bauer Aktiengesellschaft | Bogenleiteinrichtung |
DE102022127685A1 (de) | 2022-10-20 | 2024-04-25 | Koenig & Bauer Ag | Trag- oder Leitvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE4447963B4 (de) | 2005-12-29 |
DE4427448B4 (de) | 2008-07-31 |
JPH0859016A (ja) | 1996-03-05 |
JP3655670B2 (ja) | 2005-06-02 |
EP0695707A3 (de) | 1997-01-15 |
EP0695707A2 (de) | 1996-02-07 |
DE4427448A1 (de) | 1996-02-08 |
US5687964A (en) | 1997-11-18 |
DE59508834D1 (de) | 2000-12-14 |
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