EP1092537A2 - Arrangement pour tourner des feuilles dans une machine d'impression rotative à feuilles - Google Patents

Arrangement pour tourner des feuilles dans une machine d'impression rotative à feuilles Download PDF

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Publication number
EP1092537A2
EP1092537A2 EP00119487A EP00119487A EP1092537A2 EP 1092537 A2 EP1092537 A2 EP 1092537A2 EP 00119487 A EP00119487 A EP 00119487A EP 00119487 A EP00119487 A EP 00119487A EP 1092537 A2 EP1092537 A2 EP 1092537A2
Authority
EP
European Patent Office
Prior art keywords
turning
drum
sheet
storage drum
storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00119487A
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German (de)
English (en)
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EP1092537B1 (fr
EP1092537A3 (fr
Inventor
Karl-Heinz Helmstädter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1092537A2 publication Critical patent/EP1092537A2/fr
Publication of EP1092537A3 publication Critical patent/EP1092537A3/fr
Application granted granted Critical
Publication of EP1092537B1 publication Critical patent/EP1092537B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a device for turning sheets in one Sheet-fed rotary printing machine according to the preamble of claim 1, a Turning device according to the preamble of claim 5, a turning device according to Preamble of claim 10, a turning device according to the preamble of Claim 13 and a turning device according to the preamble of claim 14.
  • DE 44 24 968 C2 discloses a turning device of the type mentioned here, which has a storage drum, on the outer surface of which several sheets are held become.
  • the storage drum is a turning drum in the direction of travel of the sheet downstream, which is a holding device for the rear edge of the sheet to be turned having.
  • the arrangement of the storage drum and the turning drum is chosen in such a way that their lateral surfaces almost touch at a tangent point.
  • the Storage drum has a first blowing device, with the aid of which a blowing air flow can be applied to the sheet already grasped by the holding device by the Push the sheet away from the storage drum so that the sheet is turned is supported.
  • a second blowing device with the help of air in the Tangent point is inflatable to push down the sheet to be turned and thus support the detachment of the sheet from the storage drum.
  • the blowing streams of the first and second blowing devices of the known Turning device which serve to support the turning process, can in Do not reduce the vacuum acting to a sufficient extent because the blowing air flow of the second one arranged above the tangent point Blower device due to the very small space between the storage drum and the turning drum, if at all, only very weakly in the below the Tangential point lying turning area and that in the storage drum arranged first blowing device is only active for a very short time on the on the storage drum lifting the overlying sheet at its trailing edge area. Also for this are the Blowing air usual pressure differences the outlet cross sections of the blowing nozzles too small to to compensate for the resulting negative pressure.
  • a turning device with the features of Claim 1 proposed. This is characterized by the fact that the Reversing drum at least one channel and / or at least one with an interior of the Reversing drum connected through opening are / is, through the air in the Vacuum area can be sucked in and / or inflated.
  • blow devices can be used that cover the vacuum area Blowing and / or compressed air supply, are dispensed with, which causes the structure of the Turning device can be simplified.
  • At least one blowing / compressed air supply device is provided, for example the interior of the turning drum is supplied with blown air or compressed air which is supplied via the Through opening in the reversible drum jacket reaches the negative pressure area.
  • the At least one through opening is seen in the direction of rotation of the turning drum the rear edge of the sheet to be turned, provided on the turning drum Subordinate holding device.
  • a Blown air / compressed air flow is introduced into the vacuum area via the duct.
  • everyone Embodiments has in common that the afterflow of air through the channel and / or the passage opening into the vacuum area through the one acting there Negative pressure is at least supported.
  • At least one wall of the Channel at least partially through one in the lateral surface of the turning drum introduced flattening is formed.
  • a flattening is a flat or substantially flat surface understood a circular or curved surface.
  • the turning drum in the area of the flattening mostly has a substantially circular cross-section, the channel wall - seen in the direction of flow of the air - at least in its flattening upstream area has a different, preferably smaller radius of curvature than the turning drum.
  • a turning device with the features of Claim 5 proposed. This is characterized by the fact that the Storage drum at least one edge-open recess, at least one channel and / or at least one connected to an interior of the storage drum Through opening are / is provided, via the air in the negative pressure area can be introduced.
  • the recess for example, over the entire length of the Storage drum can extend laterally, i.e. towards the edge of the machine, and in Circumferential direction closed at least so far that from its open side blown air cannot escape.
  • the one brought into the recess "Air package" that immediately before the recess is inserted into the Vacuum area is introduced with the help of at least one blowing device is in the Turning area due to the negative pressure from the recess sucked out, which means that the vacuum in the turning area is at least harmless Dimension can be reduced.
  • the recess that is in a free area between two arranged on the storage drum lying sheet can in the circumferential direction Storage drum be extended so far that in a certain angle of rotation position the storage drum briefly a direct passage between one above the roller nip formed between the turning drum and the storage drum Area of the sheet-fed rotary printing machine and the vacuum area is given, so that follow in the ambient air and / or blow / compressed air directly via the Outer surface of the storage drum open recess in the Vacuum area can be blown.
  • the Air passage opening from the interior of the storage drum to a blown air / compressed air supply device can be connected in the vacuum area be sucked in or blown in.
  • a blowing device cooperating channel supplied to the vacuum area air is connected to the environment and / or with a blowing device cooperating channel supplied to the vacuum area air.
  • a turning device with the features of Claim 10 proposed. This is characterized by the fact that the turning drum eccentrically mounted and the holding device is arranged thereon that already in When the holding device takes over the trailing edge of the sheet, there is free space is formed between the turning drum and the storage drum. With the help of light Free space between the opposite outer surface of the Storage drum and the turning drum, is a flow connection between the Environment and by the sheet to be turned, the turning drum and the Storage drum limited vacuum area can be produced.
  • the free one Flow cross-section of the free space is at least so large that during the Flow a sufficient amount of air into the vacuum area during the turning process or can be introduced so that when turning the bow due to the entrained air negative pressure in this area to a harmless Dimension reduced and thus a lifting of the following, on the storage drum overlying bow can be prevented.
  • the free space allows ambient air preferably flow in automatically. It is also possible that through the free space Blown air is blown into the turning area of the bow.
  • a turning device which Features of claim 13.
  • This is characterized in that the Reversing drum - seen in cross section - at least one on its outside Flattened, which - seen in the direction of rotation of the turning drum - on the Reversing drum provided holding device for the sheet trailing edge is arranged downstream.
  • the flattening by at least one on the outside of the turning drum introduced flat or essentially flat surface is used in a certain rotational position of the turning drum, a space between the turning drum and the storage drum, through which air is in the turning range of the Holding device of the turning drum detected sheet can be introduced.
  • a space between the turning drum and the storage drum through which air is in the turning range of the Holding device of the turning drum detected sheet can be introduced.
  • the Reversing drum - seen in cross section - at least one on its outside Flattened, which - seen in the direction of rotation of the turning drum - on the Reversing drum provided holding device for the sheet trailing edge is arranged downstream.
  • a turning device which Features of claim 14 and is characterized in that by at least one stationary blowing device compressed air laterally in the Vacuum area can be introduced.
  • the compressed air or blown air can, for example, directly be blown into the negative pressure area or, in the case of an advantageous one Embodiment of the turning device - in one provided in the storage drum Distribution room that communicates with the negative pressure area via at least one flow path in preferably a direct connection.
  • the storage drum can also serve as a printing cylinder or from a pressure cylinder can be formed.
  • the turning device 1 described below is generally for turning sheets can be used in a sheet-fed rotary printing press that is used in straight printing and / or in perfecting Back pressure can be operated.
  • FIG. 1 shows a side view of an embodiment of a turning device 1, the is used in a sheet-fed rotary printing machine for turning sheets.
  • the Turning device 1 comprises a storage drum 3 which is a first holding device 5 for the - seen in the direction of rotation of the storage drum 3 - one of the front edge Outer surface 7 of the storage drum 3 adjacent sheet and a second Has holding device 9 for the rear edge of the sheet. Furthermore, there is a third Holding device 11 for the front edge and a fourth holding device 13 for the Provided trailing edge of a subsequent sheet.
  • the sheets are in the direction of travel seen the bow (arrow 15) - from one of the storage drum 3 upstream Cylinder 17 brought up.
  • the second holding device 9 and the third holding device 11 are placed at a distance from one another in an outer surface 7, open edge 19 and the first holding device 5 and the fourth Holding device 13 in a second recess 21 arranged opposite one another arranged.
  • the recesses 19, 21 extend at least substantially over the total length of storage drum 3.
  • the first holding device 5 and the third holding device 11 are shown here as Clamping devices formed, each several at a distance from each other and - Seen in the longitudinal direction of the storage drum 3 - grippers arranged one behind the other have, which hold the respective sheet in its leading edge area and the sheet fix the position on the outer circumferential surface of the storage drum 3.
  • the second Holding device 9 and the fourth holding device 13 are here of suction devices formed, each at least one sucker, preferably several at a distance from each other and - seen in the longitudinal direction of the storage drum 3 - one behind the other have arranged suction cups, with the help of which the respective sheet in its Trailing edge area can be kept.
  • the first and third Holding devices 5 and 11 as suction devices, each with at least one suction device be trained.
  • the second and fourth holding devices 9, 13 and the first and third, respectively Holding devices 5, 9 keep the respective sheet tensioned on the storage drum 3, the suction force is not sufficient at high machine speeds, to prevent the sheet from lifting off from the storage drum 3.
  • a handover of the respective sheet to one of the Storage drum 3 downstream turning drum 23 can with a high printing performance the sheet-fed rotary printing press only with the aid of the holding devices 5, 9, 11, 13 be guaranteed.
  • the two drum halves are preferably of exactly the same design and have a precisely ground outer peripheral surface.
  • the distance between the turning drum 23 and the storage drum 3 is selected such that an outer surface 25 of the turning drum 23 and the outer surface 7 of the Storage drum 3 almost touch each other.
  • the turning drum 23 has one Holding device 27 for the rear edge of the material to be turned on the storage drum 3 stored sheet on, which in this embodiment as a clamping device 28th is formed, the plurality at a distance from one another and in the longitudinal direction Turning drum 23 seen - arranged one behind the other grippers.
  • the construction and the function of the clamping device 28 shown in five positions A to E in FIG. 1 is known per se, so it is not dealt with in more detail here.
  • the holding device 27 of the turning drum 23 cannot with one in the figures illustrated embodiment can also be formed by a suction device, the at least one suction device, preferably several in the longitudinal direction of the turning drum seen - has suction cups arranged one behind the other, with which the trailing edge of the sheet of a sheet to be turned is detectable. It is also conceivable that only one can find out about the entire length of the turning drum 23 extending suction cup is used.
  • the function of the turning device 1 is based on a turning process explained in more detail:
  • a tangent point 29 between the almost touching Storage drum 3 and turning drum 23 is the rear edge of one with the help of Holding devices 5, 9 held on the outer surface 7 of the storage drum 3
  • Sheet 31 is gripped by the clamping device 28, which is in position A.
  • position B of the clamping device 28 is that shown with a broken line Arch 31 already in its middle and rear area from the outer surface 7 the storage drum 3 is lifted off while he is still at the front edge area Outer outer surface 7 abuts.
  • the arch 31 is in position C of the clamping device 28 essentially completely lifted off the storage drum 3 or replaced, whereby the previous trailing edge of the sheet now becomes the leading edge.
  • Position D of the clamping device 28 is the sheet 31 completely from the Storage drum 3 lifted off and already turned.
  • the Clamping device 28 is the sheet to one of the turning drum 23 downstream Hand over cylinder 33.
  • FIG. 2 shows a side view of an embodiment of the invention Turning device 1 in a sectional view.
  • the holding device 27 of the turning drum 23 has a plurality of grippers 43, of which only one in the illustration according to FIG. 2 the gripper 43 can be seen.
  • the grippers 43 are at a distance from one another and arranged one behind the other over the length of the turning drum 23.
  • the grippers 43 are introduced into the outer circumferential surface 25 of the turning drum 23
  • Flattened 45 is arranged, which in this embodiment extends over the entire Length of the turning drum 23 extends. Due to the flat 45 is one of the Outer lateral surface 25 set back in the direction of the axis of rotation of the turning drum 23 flat surface 47 is formed, on which the grippers 43 are releasably attached.
  • Area 47 comes on its - seen in the direction of rotation of the turning drum 23 - the clamping device 28 downstream end directly into the circular cross section of the turning drum 23, while at the other end of surface 47 there is a curved wall section 49 connected, which extends over an angular range of approximately 70 ° and is stepless in the outer contour of the turning drum 23 merges.
  • the radius of curvature of the Wall section 49 is smaller than the radius of the turning drum 23 Flattening 45 and an incision made in the outer surface 25, whereby the curved wall section 49 is formed, is an over the entire length of the Turning drum 23 extending channel 51, which is in this Embodiment extends over an angular range of approximately 140 ° and over the Ambient air can flow into the vacuum region 35, as with arrows 53 indicated.
  • a blowing device not shown in the figures be provided, with the aid of which a blown air or compressed air flow into the channel 51 can be blown.
  • the turning drum has several described with reference to Figure 2 in Seen in the longitudinal direction of the turning drum 23 arranged one behind the other Flattenings 45, each with a channel 51, the flattenings 45 are preferably at least so wide that they each have at least one gripper 43 be able to record. So there remain intact between the channels 51 Outer lateral surface sections of the turning drum 23 are available, which leads to better strength / rigidity properties the turning drum compared to that based on FIG. 2 described turning drum with the continuous flat 45 leads.
  • the channel 51 is designed such that the air flow in channel 51 directed against the direction of rotation of the turning drum 23 is.
  • the channel 51 is thus aligned in such a way that the Reversing drum 23, the ambient air is virtually shoveled into the channel 51, so that a particularly large amount of air is introduced into the vacuum region 35 in a short time can be, whereby a lifting of the subsequent sheet from the storage drum 3rd can be safely prevented.
  • the channel 51 or channels 51 can also be embodied in this way be designed and aligned so that the air flow through the channel 51 in the direction of rotation the turning drum 23 is directed.
  • the air can, for example, from the area of the machine lying above the tangent point 29.
  • the introduction of blown air or compressed air is also in this exemplary embodiment possible.
  • FIG. 3 shows a further embodiment of the turning device 1 in a side view, in which the turning drum 23 is seen in a direction of rotation of the turning drum 23 Holding device 27 upstream peripheral area at least one in Figure 3 not has through opening shown, which is connected to an interior 55.
  • a first embodiment variant provides that through the in the vacuum region 35 acting negative pressure through the passage air from the interior 55 of the Reversing drum 23 is sucked into the negative pressure region 35, which causes the subsequent sheet lying on the outer surface 7 of the storage drum 3 acting force is reduced to a harmless level.
  • the interior 55 does not have one in FIG shown rotating union in a shaft journal of the turning drum 23 connected is to which a blowing / compressed air supply device is connected, so that the Through opening in the jacket of the turning drum 23 blowing or compressed air in the Vacuum area 35, ie behind the turned sheet, can be blown, as with Arrows 53 indicated.
  • a Angle-controlled valve provided in the blowing / compressed air supply, so that the Through opening is only supplied with blown / compressed air if the Turning drum 23 is in a rotational position in which a flow connection exists between the through opening and the vacuum region 35.
  • the at least one through opening in the jacket of the turning drum 23 can overlap the entire length of the turning drum 23 and in its circumferential direction over one extend certain circumferential angle.
  • the slot-shaped design of the Through opening can also be several at a distance from each other over the entire Length of the turning drum 23 arranged through openings can be provided, are sucked in or blown into the vacuum region 35 via the air can.
  • FIG. 4 shows a further embodiment of the turning device 1 in a side view, in which the opposite, the holding device 5, 13 and 9, 11th receiving recesses 19, 21 each have at least one, not shown Through opening are connected to an interior space 57 of the storage drum 3, the via a hole or the like formed, not shown in Figure 4 Rotary feedthrough in a shaft journal of the storage drum 3 with the environment can be connected.
  • the storage drum 3 is in a rotational position, in which the recess 21 is arranged in the vacuum region 35 or the Vacuum area 35 is opposite.
  • the im Area 35 present negative pressure air from the interior 57 of the storage drum 3 sucked in, whereby the negative pressure in the negative pressure region 35 is reduced.
  • the recess 19 in the Vacuum region 35 is displaced, air can pass through the recess 19 Follow the vacuum area 35.
  • the recesses 19, 21 extend in this Embodiment over a peripheral region of the storage drum, which is so large that in a specific rotational angle position of the storage drum 3, the recess 21 or 19 is arranged entirely in the vacuum region 35. The suction of air into the vacuum region 35 via the respective recess takes place immediately after the transfer of the trailing edge of the sheet from the holding device 9 or 13 to the turning drum 23.
  • the interior 57 is connected to a blowing / compressed air supply device, for example via the rotary feedthrough, so that via the recesses 19, 21 in one corresponding rotation angle position of the storage drum 3 blowing / compressed air in the Vacuum area 35 can be blown in, the blowing / compressed air supply the recesses 19, 21 is preferably controlled by angle of rotation, that is, the Recesses 19, 21 are then with the blown / compressed air supply device Blowing / compressed air is supplied as soon as a part of the respective recess in the Vacuum area 35 is retracted. Otherwise there will be no recesses 19, 21 Blown / compressed air supplied.
  • Figure 5 shows a further embodiment of the turning device 1, which is different from the differs from FIG. 4 only differs in that the recesses 21 and 19 have no connection to the interior of the storage drum 3 have, but only open to the outer surface 7 of the storage drum 3 out Form rooms.
  • the recesses 19 is in the circumferential direction of the storage drum 3 by side walls 59 and 61, at the bottom by a connecting the side walls 59, 61 Bottom 63 and laterally closed by end walls, of which according to the illustration Figure 5 shows only the end wall 65.
  • the recesses 19, 21 are identical constructed, that is, the recess 21 also has side walls 59, 61, one Bottom 63 and end walls 65.
  • FIG. 6 shows a further embodiment of the turning device 1 in a side view, in the through-openings 69 and 71 in the side wall 61 of the recess 21 are introduced through which a connection between the recess 21 and a part of the interior 57 consists of the through the openings 69 and 71 and the Recess 21 air can be sucked into the vacuum region 35 as soon as at least one Part of the recess 21 is in the vacuum region 35.
  • the air flows out the inside of the storage drum 3 in the vacuum region 35 are indicated by arrows 53 indicated.
  • the recess 19 also has at least one, not shown in Figure 6 Through opening on that a connection between the interior 57 of the Storage drum 3 and the recess 19, so that also on the Recess 19 sucked air from the interior 57 into the vacuum region 35 can be, if the storage drum 3 in a corresponding Angle of rotation position.
  • the first - seen in the direction of rotation of the storage drum 3 Holding device 5 or the third holding device 11 upstream part of the Storage drum casing each at least one, preferably several Through openings are arranged, the outer surface 7 of the Connect storage drum 3 to the interior 57, which in turn via the Through openings 69, 71 of the respective recesses 19 and 21, respectively connected is.
  • These through openings are, for example, for a half-speed Storage drum, the drum halves of which have interlocking teeth, in advantageously formed by the spaces between the tines.
  • the Through area (s) having the lateral surface area of the storage drum 3 is located on the outside of the following sheet 37 so that by sucking the air from the interior 57 in the vacuum region 35, a vacuum on the on Outer surface 7 is transferred to the underside of the sheet.
  • This will make the Arch preferably held smooth on the outer surface 7, so that even a high peripheral speed of the storage drum 3 a lifting of the sheet 37th can be safely prevented.
  • the turning device supports the generated by the negative pressure present in the negative pressure region 35 Air flow thus at the same time also the fixation of the following bow on the Storage drum 3, which on its leading edge and trailing edge through the Holding devices 5, 9 and 11, 13 is held and tensioned.
  • FIG. 7 shows a further embodiment of the turning device 1, in which the Turning drum 23 from an eccentric 75 connected to a drive shaft 73 is formed, which are rotatably connected together.
  • the turning drum 23 has in terms of their manufacture a particularly advantageous shape so that they are easier in us can thus be produced cost-effectively.
  • the turning drum 23, the Axis of rotation 77 has an eccentricity e to the center 79 of the eccentric 75, points in FIG its outer lateral surface 25 extends over the whole or essentially the whole Length of the turning drum 23 extending flat 81 on which the Clamping device 28 formed holding device 27 is arranged.
  • the Clamping device 28 has several - seen in the longitudinal direction of the turning drum 23 one behind the other arranged grippers 43, of which in the illustration according to FIG. 7 only a gripper 43 can be seen.
  • the grippers 43 are at a distance from one another arranged, between two grippers 43 a preferably unobstructed Gap (not shown) exists.
  • the grippers 43 of the clamping device 28, which rotate when the turning drum 23 follow a circular path around the axis of rotation 77 are arranged such that the through the Eccentric shape of the turning drum 23 resulting imbalance at least partially is balanced.
  • a gap hereinafter referred to as free space 83, is formed between the outer lateral surfaces 7, 25 of the turning drum 23 and the storage drum 3 when it is rotated about the axis of rotation 77.
  • the free space 83 is smallest when the turning drum 23 is in an angular position in which a fixed point X 0 is arranged on the outer circumferential surface 25 of the turning drum 23 in the region of the tangent point 29. In this rotational position of the turning drum 23, its outer surface 25 almost touches the outer surface 7 of the storage drum 3. If the turning drum 23 continues to rotate clockwise, as shown by an arrow, the free space 83 initially becomes ever larger.
  • the grippers 43 By rotating the turning drum 23, the grippers 43 are shifted into their take-over position, in which the rear edge of the sheet to be turned is gripped. This take-over position is in the area of the tangent point 29. Since the grippers 43 are arranged on the side of the turning drum 23 opposite the point X 0 , the outer lateral surfaces 7, 25 now have their greatest distance from one another when the trailing edge of the sheet is taken over; the free space 83 is therefore the greatest at this moment. If the turning drum 23 now rotates further clockwise, the free space 83 — corresponding to the outer contour of the turning drum 23 in this exemplary embodiment — again becomes smaller and smaller until it is almost closed again.
  • the trailing edge of the sheet 31 is thus removed from the Grasped 43 and started this from the outer surface 7 of the Lift off storage drum 3. Because already when you take over the trailing edge of the sheet the grippers 43 the free space 83 and the spaces described above between there are two grippers 43, one over the gaps Flow connection between the loosening and turning of the bow itself forming vacuum region 35 and that above the turning drum 23 and the Storage drum 3 located surrounding area exists and sucks in ambient air , it can be ensured that the negative pressure that forms in area 35 is preferably only so small that the subsequent sheet is lifted off the Outer surface 7 of the storage drum 3 can be excluded.
  • the ambient air can also in Area of the grippers 43, which no longer block the free space 83, from above into the Subsequent flow of vacuum area 35, as indicated by arrows 53.
  • the inflow of Ambient air through the free space 83 between the outer surface 7, 25 and respective space between two adjacent grippers 43 in the Vacuum area 35 is further supported by the fact that the gap (Free space 83) between the turning drum and storage drum 3 after the grippers 43 have passed the tangent point 29, narrowed and by the turning drum body Ambient air is pressed into this gap.
  • FIG Clamping device 28 of the turning drum 23 is designed such that between the Flattening 81 and the grippers 43 each have a slot 82 through which likewise Ambient air and / or blowing / compressed air can flow into the vacuum region 35, as indicated by arrows 53 '.
  • the turning drum 23 In order from the surroundings through the free space 83 between the turning drum 23 and the To increase storage drum 3 into the vacuum area 35, can the turning drum 23 also at least one blade, for example similar to a vane fan, which have the afterflow of air into the free space 83 improves or specifically supplies air to the free space 83, which then flows from there into the Area 35 to reduce the negative pressure that forms there.
  • That shovel can, for example, in the area between two grippers 43 or in the direction of rotation of the Turning drum 23 seen - in a subordinate to the grippers 43 Outer jacket area of the turning drum can be arranged.
  • the shovel can too be integrally formed with the turning drum 23, that is, the outer contour of the The turning drum has a scoop-like shape at at least one point. This Embodiment of the turning drum is more complex to manufacture. With their Use technical aspects should therefore be disregarded.
  • Turning device 1 has the holding device 27 on the turning drum 23 only a gripper 43, which is arranged on the flat 81 and is extends at least substantially over the entire length of the turning drum 23.
  • a gripper 43 which is arranged on the flat 81 and is extends at least substantially over the entire length of the turning drum 23.
  • the gripper 43 passes through the Tangent point 29 suddenly a connection between the environment and the Vacuum area 35 released because the moment the sheet trailing edge is taken over by the gripper 43 of the free space 83 between the outer surface 7, 25 of the Storage drum 3 and the turning drum 23 exists, but the gap through the Gripper 43 itself is still closed and only when the gripper 43 passes Tangent point 29 the flow connection is made.
  • This too Embodiment of the turning drum 23 has advantages in terms of its manufacture compared to known turning drums.
  • Turning drum 23 on a base body, which is a substantially elliptical Has cross section.
  • the shape of the turning drum body is, among other things, by a plurality of flats 85 are formed on the outer lateral surface 25.
  • holding devices 27 and 27 'are are provided, which are opposite are arranged.
  • the holding devices 27, 27 'are here of clamping devices 28 or 28 ', the at least one, preferably a plurality of grippers 43 or 43 'for the rear edge of a sheet to be turned.
  • the Clamping devices 28, 28 ' are preferably of identical design and each have at least one, preferably a plurality of lifting elements 30 or 30 ', which are formed, for example, by suction devices and -in the direction of rotation of the turning drum seen- are arranged upstream of the associated clamping device.
  • the Lifting elements 30, 30 ' serve to lift one on the outer surface 7 of the Storage drum 3, which serves here as a printing cylinder, resting sheet in his Trailing edge area.
  • the rotation of the Turning drum 23 Due to the non-circular outer contour of the turning drum 23, the rotation of the Turning drum 23 a space 83 between the turning drum body and the Storage drum 3 formed, the larger when turning the turning drum 83 and gets smaller again. Ambient air and / or blown air enters through the free space 83 the negative pressure area 35, so that the negative pressure in the area 35 at least as far it is reduced that a subsequent sheet is lifted off the storage drum 3 can be excluded.
  • FIG. 9 shows a further embodiment of the turning device 1 in a side view, with the help of a with a blow / compressed air supply device, not shown connected blowing device 86 blowing / compressed air in the Vacuum area 35 can be introduced.
  • the blowing device 86 comprises blowing nozzles, from which only three blowing nozzles 87 can be seen in the illustration according to FIG. 9. Further blowing nozzles 89 of the blowing device 86 are shown in FIG Cross section through the exemplary embodiment of the turning device 1 shown in FIG. 9 shows.
  • the blowing nozzles 87 are on a first storage frame 91 of the sheet-fed rotary printing press and the nozzles 89 on the opposite side on a second storage rack 93 fixed attached.
  • a second storage rack 93 is in this embodiment at least the storage drum 3 rotatably mounted.
  • the Blow nozzles 87 preferably also the blow nozzles 89, on an imaginary circular path arranged, the center of which lies on the axis of rotation of the storage drum 3.
  • the arrangement of the blowing nozzles 87, 89 is selected such that it is arranged in a corresponding manner Rotation angle position of the storage drum 3 compressed air or blown air in which over the First recess 19 extending over the entire length of the storage drum 3 or second recess 21, which in the outer surface 7 of the Storage drum 3 are introduced, is laterally inflatable, as indicated by arrows 53.
  • Rotation angle position of the storage drum 3 compressed air or blown air in which over the First recess 19 extending over the entire length of the storage drum 3 or second recess 21, which in the outer surface 7 of the Storage drum 3 are introduced is laterally inflatable, as indicated by arrows 53.
  • in the area of the recesses 19, 21 in the end walls 95 and 97 of the Storage drum 3 each provided at least one opening 99.
  • Blowing nozzles 87, 89 can either blow air or compressed air in the as Distribution space for the air-serving recess 21 or 19 blown be the over the open side of the recess 21 on the outer surface 7 of the Storage drum 3 can flow into the vacuum region 35.
  • the blowing nozzles 87, 89 are aligned here in such a way that the blowing flows (arrows 53) in the central region of the Storage drum 3 meet.
  • blowing nozzles 87 optionally also the blowing nozzles 89, a circular cross section.
  • the blowing nozzles 87, 89 can be according to another, not shown Embodiment also be slit-shaped.
  • blowing nozzles 87, 89 Due to the fixed arrangement of the blowing nozzles 87, 89, a rotation angle is controlled Delivery of blown air or compressed air into the recesses 19, 21 realized because the blown / compressed air only then be blown into the recess 19 or 21 can if the openings 99 are arranged opposite the blowing nozzles 87, 89. Of course, there is also a clocked supply of blown / compressed air to the Blow nozzles 87, 89 possible.
  • All embodiments of the turning device 1 have in common that the Turning of a sheet resulting vacuum region 35 between the storage drum 3, the turning drum 23 and the side of the sheet facing the storage drum 3 by supplying air to this area, which takes place automatically or with the help at least one blowing device can be forced or supported, can be reduced.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Replacement Of Web Rolls (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP00119487A 1999-10-13 2000-09-18 Arrangement pour tourner des feuilles dans une machine d'impression rotative à feuilles Expired - Lifetime EP1092537B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19949412A DE19949412A1 (de) 1999-10-13 1999-10-13 Einrichtung zum Wenden von Bogen in einer Bogenrotationsdruckmaschine
DE19949412 1999-10-13

Publications (3)

Publication Number Publication Date
EP1092537A2 true EP1092537A2 (fr) 2001-04-18
EP1092537A3 EP1092537A3 (fr) 2002-10-16
EP1092537B1 EP1092537B1 (fr) 2009-12-02

Family

ID=7925528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119487A Expired - Lifetime EP1092537B1 (fr) 1999-10-13 2000-09-18 Arrangement pour tourner des feuilles dans une machine d'impression rotative à feuilles

Country Status (7)

Country Link
US (2) US6722276B1 (fr)
EP (1) EP1092537B1 (fr)
JP (1) JP4603669B2 (fr)
CN (1) CN1222409C (fr)
AT (1) ATE450376T1 (fr)
DE (2) DE19949412A1 (fr)
HK (1) HK1036603A1 (fr)

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US8720334B2 (en) 2006-06-15 2014-05-13 Komori Corporation Sheet-fed printing press
US9387662B2 (en) 2006-08-09 2016-07-12 Komori Corporation Intaglio printing press

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DE10164255A1 (de) * 2001-12-27 2003-07-17 Heidelberger Druckmasch Ag Drei-Trommel-Wendeeinrichtung für bogenverarbeitende Maschine
DE10310690A1 (de) * 2002-04-12 2003-10-30 Heidelberger Druckmasch Ag Bogenführungseinrichtung in einer bogenverarbeitenden Maschine
ATE418452T1 (de) * 2002-10-30 2009-01-15 Heidelberger Druckmasch Ag Bogentransporttrommel einer bedruckstoffbogen verarbeitenden maschine
JP2005007858A (ja) * 2003-06-18 2005-01-13 Heidelberger Druckmas Ag 被印刷体枚葉紙を処理する機械を運転する方法
JP4559208B2 (ja) * 2004-12-01 2010-10-06 株式会社小森コーポレーション 反転機構付枚葉輪転印刷機
JP4746981B2 (ja) * 2005-12-26 2011-08-10 Ｎｅｃ液晶テクノロジー株式会社 液晶表示装置、その防塵方法およびその組立方法
DE102007049643C5 (de) * 2006-11-06 2019-04-04 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Wenden eines Bogens während des Förderns durch eine Druckmaschine
CN101177061B (zh) * 2006-11-06 2011-01-12 海德堡印刷机械股份公司 用于使页张在输送经过印刷机期间翻转的方法及装置
JP2008114592A (ja) * 2006-11-06 2008-05-22 Heidelberger Druckmas Ag 枚葉紙をフィードするための渡し胴
DE102007049380B4 (de) * 2006-11-10 2021-03-25 Heidelberger Druckmaschinen Ag Vorrichtung zum Wenden eines Bogens während des Förderns durch eine Druckmaschine
JP5361168B2 (ja) * 2006-11-10 2013-12-04 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 枚葉紙を印刷機を通して搬送する間に反転させるための装置
CN101301809B (zh) * 2007-05-11 2012-05-30 海德堡印刷机械股份公司 单张纸印刷机印刷装置之间的递纸辊
DE102007061399A1 (de) 2007-12-19 2009-06-25 Koenig & Bauer Aktiengesellschaft Wendeeinrichtung in einer bogenverarbeitenden Maschine
DE102009019020B4 (de) 2008-05-23 2021-05-20 Heidelberger Druckmaschinen Ag Vorrichtung zum Wenden eines Bogen während des Förderns durch eine Druckmaschine
EP2138437A1 (fr) * 2008-06-27 2009-12-30 Kba-Giori S.A. Système d'inspection pour contrôler la qualité de feuilles imprimées
DE102012218049B4 (de) 2011-10-14 2023-12-28 Koenig & Bauer Ag Vorrichtung zum Wenden und Fördern von Bogen in Druckmaschinen
CN104030073B (zh) * 2014-06-26 2016-06-08 湖南正大轻科机械有限公司 一种空气转向器
DE102015209697B4 (de) 2015-05-27 2018-04-05 Koenig & Bauer Ag Bogenführungszylinder und Verfahren zum Fördern eines Bogens in einer bogenverarbeitenden Maschine
US9694607B2 (en) * 2015-06-05 2017-07-04 Komori Corporation Sheet-like member holding device of printing press

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DD54703A1 (de) * 1966-04-30 1967-03-20 Rudolph Otfried Bogenführungseinrichtung in Mehrfarben-Bogenrotationsdruckmaschinen
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DE19713361A1 (de) * 1997-03-29 1998-10-01 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zum abschmierfreien Führen eines bedruckten Bogens auf einem bogenführenden Zylinder einer Druckmaschine, insbesondere auf einer Wendetrommel einer Bogenrotations-Offsetdruckmaschine im Schöndruckbetrieb
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Publication number Priority date Publication date Assignee Title
US8720334B2 (en) 2006-06-15 2014-05-13 Komori Corporation Sheet-fed printing press
EP1867477B2 (fr) † 2006-06-15 2022-10-26 Komori Corporation Machine d'impression avec une unité d'impression intaglio, une unité d'impression sérigraphique et une unité de séchage
US9387662B2 (en) 2006-08-09 2016-07-12 Komori Corporation Intaglio printing press

Also Published As

Publication number Publication date
EP1092537B1 (fr) 2009-12-02
US7207265B2 (en) 2007-04-24
ATE450376T1 (de) 2009-12-15
EP1092537A3 (fr) 2002-10-16
DE19949412A1 (de) 2001-04-19
CN1222409C (zh) 2005-10-12
US20040094052A1 (en) 2004-05-20
DE50015809D1 (de) 2010-01-14
JP4603669B2 (ja) 2010-12-22
US6722276B1 (en) 2004-04-20
HK1036603A1 (en) 2002-01-11
JP2001105570A (ja) 2001-04-17
CN1293109A (zh) 2001-05-02

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