EP0705690A1 - Rouleau de guidage de feuilles avec un diamètre extérieur réglable - Google Patents
Rouleau de guidage de feuilles avec un diamètre extérieur réglable Download PDFInfo
- Publication number
- EP0705690A1 EP0705690A1 EP95113141A EP95113141A EP0705690A1 EP 0705690 A1 EP0705690 A1 EP 0705690A1 EP 95113141 A EP95113141 A EP 95113141A EP 95113141 A EP95113141 A EP 95113141A EP 0705690 A1 EP0705690 A1 EP 0705690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet guide
- shaft
- guide drum
- drum according
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
Definitions
- the invention relates to a sheet guide drum for rotary printing presses, the outer diameter of which can be changed by means of a spring-loaded cylinder lift and radially adjustable support elements.
- a device for compensating for the change in the printing length of a sheet of paper when passing through one or more printing units of a printing press in which the cylinder of a sheet guide drum consists of a tubular body fastened to a drive shaft.
- This tubular body has an axially parallel slot along its longitudinal axis.
- means are provided through which the tubular body can be expanded, so that a concentric increase in the tubular body diameter can be set in a defined manner.
- Support disks on which the tubular body is supported via conical surfaces are to be hydraulically displaced axially against the force of a return spring.
- a uniform expansion of the tubular body is dependent on the fact that the same friction conditions prevail everywhere in the conical contact surfaces. If this is not the case, there can be an uneven axial displacement with a correspondingly uneven expansion of the tubular body.
- a sheet guide drum has become known, in which the outside diameter can be changed to adapt to different thicknesses of paper.
- a height-variable element is arranged between a circumferentially adjustable cladding film and the surface of the sheet guide drum, various embodiments of this element in particular being considered, which have a large number of elastically flexible supporting elements, the radial extent of which depends on how strongly the cladding film is stretched.
- this known sheet guide drum it is disadvantageous that an exact concentricity of the jacket film is not guaranteed, because the uniform change in diameter depends both on the manufacturing accuracy of the individual flexible supporting elements and on the respective local friction and wear conditions.
- the concentricity also depends on the inherent rigidity of the cladding film, the selection of which always forces a compromise between sufficient load-bearing capacity and sufficient flexibility with regard to the variable clamping conditions .
- the invention has for its object to develop a sheet guide drum of the type mentioned so that the disadvantages existing in a non-positive, dependent on the friction and the spring properties of the components involved change in diameter and that a satisfactory in terms of uniformity of expansion and concentricity Result can be achieved.
- an elastically deformable cylinder jacket is provided between the cylinder lift and the support elements, that the support elements in a fixed with the sheet guide drum connected guide element are mounted radially displaceable and that the support elements rest on the outside of the cylinder jacket and are supported on the inside on abutments of an adjusting disc, the effective radial distance from the shaft can be changed continuously by rotating the adjusting disc relative to the shaft.
- an elastically deformable cylinder jacket was provided, which can be easily manufactured in a constant thickness and whose deformation properties can be adjusted within wide limits to the desired conditions. In this way it is possible - unlike with a metal foil or with a cylinder lift - to make the areas between the support points formed by the support elements so rigid that the required concentricity of the sheet guide drum can be ensured.
- a solution is thus proposed which is superior to the known embodiments in terms of production technology and function and whose structural outlay does not go beyond the scope of the known sheet guide drums.
- the sheet guide drum also has the advantage that only small actuating forces are required to change its outside diameter.
- the adjusting disk for forming ramp-like abutments has a sawtooth-like outer contour, each support element being assigned an abutment whose radial distance from the shaft changes continuously, preferably spirally, in the circumferential direction.
- the support elements can consist of rollers which are rotatably mounted in a guide element constructed from disks. However, they can also consist of sliding pins which are radially displaceably mounted in a guide element designed as a ring.
- a constructive alternative is that an elastically deformable cylinder jacket is provided between the cylinder lift and support elements, that the radially adjustable, on the outside forming a support for the cylinder jacket support elements consist of cams which are rotatable about axes parallel to the shaft of the sheet guide drum in a fixed with the shaft connected guide element are mounted and that the cams have a lever-like projection on the inside, which engages in recesses of an adjusting disc which is rotatable relative to the shaft.
- the cams on the outside have a contour which, when the cams rotate, causes a constant change in the radial distance of the cylinder jacket from the shaft.
- the adjusting disc is rotatably mounted on the shaft of the sheet guide drum and can be rotated relative to the shaft by means of an adjusting screw.
- Two guide elements arranged at the end and two associated adjusting disks are preferably provided. Between the guide elements arranged at the ends and adjusting discs, however, at least one additional guide element with at least one additional adjusting disc can be arranged. It is expedient if only one set screw is provided and the setting disks are connected to one another in a rotationally fixed manner by means of a cross member.
- the guide elements have a circumferential recess for the crossmember.
- the guide element consisting of disks has radial cutouts for the storage of the rollers.
- the sheet guiding drum according to FIG. 1 essentially consists of a driven shaft 1, which is rotatably connected to a hub 2, one with the shaft 1 as well non-rotatably connected guide element 3, in which rollers 4 are mounted, and an adjusting disc 5 with abutments 6, which are formed by a sawtooth-like outer contour.
- the rollers carry an elastically deformable cylinder jacket 7 and a cylinder support 8 clamped by means of springs 9.
- a gripper shaft 10, a gripper 11 and a gripper support 12 are arranged in a gripper channel, but these can be disregarded for the invention.
- the gripper shaft 10 is mounted in a flange 13 which is connected to the shaft 1 in a rotationally fixed manner and to which the springs 9 are fastened.
- an adjusting screw 15 is mounted, by means of which the adjusting disk 5 can be rotated relative to the sheet guide drum, ie relative to the shaft 1 thereof, via a cross member 16.
- a suitable bearing 17 is provided between the adjusting disc 5 and the hub 2.
- a spindle driven by a motor can be provided for rotating the adjusting disk 5. The motor is controlled via the control station of the printing press in such a way that the cylinder diameter is adapted to the thickness of the printing material to be processed in such a way that optimal processing conditions are achieved.
- the rollers 4 on the abutments 6 move into a position which is displaced radially outward. They take with them the elastically deformable cylinder jacket 7 and the cylinder support 8 clamped by means of springs 9 and thus bring about a uniform increase in diameter over the entire effective circumference of the sheet guide drum.
- the rollers 4 move radially inward under the action of the springs 9 and the restoring force of the cylinder jacket 7, whereby the diameter is evenly reduced.
- Figures 2 and 3 show an enlarged section of Figure 1, in which some details are shown in more detail.
- the hub 2 is fastened on the shaft 1 by means of a notch pin 18 or the like.
- the guide element 3 formed from two disks 19, 20 is attached to the hub 2 by means of screws 21. Between the disks 19, 20, the rollers 4 are rotatably and radially displaceably mounted in radially extending recesses 22 via stub shafts 23.
- the adjusting disc 5 with a sawtooth-like outer contour or the ramp-like abutments 6 for supporting the rollers 4 is arranged, which is adjustable by means of the cross member 16 relative to the hub 2 and the discs 19, 20 in the circumferential direction and in turn is supported on the hub 2 via the bearing 17.
- the abutments 6 are formed by flat surfaces which are each aligned perpendicular to a radius intersecting the tip of a sawtooth. The rollers 4 are pressed against the abutment 6 by the spring-loaded cylinder lift 8 and the cylinder jacket 7.
- a recess 24, which extends in the circumferential direction, for the crossmember 16 is formed in the disks 19, 20.
- the cutouts 22 and 24 allow the radial displacement of the rollers 4 on the one hand and the rotation of the cross member 16 and the adjusting disk 5 relative to the disks 19, 20 in the circumferential direction on the other hand, the cutout 24 having no guiding function.
- Figure 4 shows a longitudinal section through the embodiment of Figure 1, it is particularly important to make it clear that the variable diameter support for the cylinder jacket 7 or the elastically clamped cylinder lift 8 in the axial direction of the sheet guide drum not only at the end, but depending on Need more than two can be provided.
- the axial distance between the rollers 4 - within construction predetermined limits - can be varied as required and adapted to the most varied of requirements in conjunction with the design of the inherent rigidity of the cylinder jacket 7.
- All adjusting discs 5 are rotatably mounted on the hubs 2 and can be moved in the same direction by means of the cross member 16.
- the rollers 4 are rotatably and radially displaceably mounted in the disks 19, 20.
- hubs 25 with integrally molded flanges 13 are provided in the usual way, one of these hubs 25 having a second flange 14 on which the (only indicated) adjusting screw 15 for adjusting the cross member 16 supports.
- the hubs 25 are also non-rotatably connected to the shaft 1 by grooved pins 18 or the like.
- sliding pins 26 are provided which are supported on the inside on the ramp-like abutments 6 of the adjusting disk 5 and serve on the outside as a support for the cylinder jacket 7.
- the sliding pins 26 are radially displaceably mounted in a guide element 3 designed as a ring, which is itself connected to the shaft 1 of the sheet guide drum in a rotationally fixed manner. As with the rollers 4, the change in diameter is effected by rotating the adjusting disc 5 relative to the ring 26.
- the support elements consist of cams 27 which are rotatably mounted in a guide element 3.
- the cams 17 engage in an adjusting disc 29 which has cutouts 30 on the edge and can be rotated relative to the guide element 3.
- the outer contour of the cams 27 is selected such that, when the adjusting disk 29 rotates and the cams 26 are rotated about its bearing axis, a constant change in the distance between the bearing surface for the cylinder jacket 7 on the cam 26 from the center of the sheet guide drum and thus the desired change in diameter is effected.
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Steering Controls (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4434828 | 1994-09-29 | ||
DE4434828A DE4434828C1 (de) | 1994-09-29 | 1994-09-29 | Bogenführungstrommel mit verstellbarem Außendurchmesser |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0705690A1 true EP0705690A1 (fr) | 1996-04-10 |
EP0705690B1 EP0705690B1 (fr) | 1997-12-29 |
Family
ID=6529522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95113141A Expired - Lifetime EP0705690B1 (fr) | 1994-09-29 | 1995-08-22 | Rouleau de guidage de feuilles avec un diamètre extérieur réglable |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0705690B1 (fr) |
AT (1) | ATE161469T1 (fr) |
DE (2) | DE4434828C1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101168318B (zh) * | 2006-10-23 | 2011-02-02 | 海德堡印刷机械股份公司 | 用于输送页张的滚筒 |
CN106183386A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机 |
CN106183387A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机 |
CN106183371A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机用印版滚筒 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611559A1 (de) * | 1996-03-23 | 1997-09-25 | Koenig & Bauer Albert Ag | Bogenverarbeitungsmaschine |
DE19617021A1 (de) * | 1996-04-27 | 1997-11-06 | Heidelberger Druckmasch Ag | Zylinder einer Rotationsdruckmaschine mit veränderbarem Außendurchmesser |
DE10324677B4 (de) * | 2002-06-26 | 2017-02-16 | Heidelberger Druckmaschinen Ag | Zylinder einer Bedruckstoff verarbeitenden Maschine mit einer Einrichtung zur Einstellung eines Durchmessers des Zylinders |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1016777A (fr) * | 1950-04-27 | 1952-11-21 | Cylindre d'impression pour presses à imprimer | |
DE1125448B (de) * | 1960-11-10 | 1962-03-15 | Franz Heinz Adamaszek | Gummizylinder fuer Rotationsgummidruckmaschinen |
DE2946252A1 (de) | 1979-11-16 | 1981-05-21 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zum ausgleich der drucklaengenveraenderung eines papierbogens beim durchlaufen eines oder mehrerer druckwerke einer druckmaschine |
DE3902923A1 (de) | 1988-03-16 | 1989-10-05 | Heidelberger Druckmasch Ag | Bogenfuehrungstrommel fuer bogenrotationsdruckmaschinen |
-
1994
- 1994-09-29 DE DE4434828A patent/DE4434828C1/de not_active Expired - Fee Related
-
1995
- 1995-08-22 EP EP95113141A patent/EP0705690B1/fr not_active Expired - Lifetime
- 1995-08-22 DE DE59501159T patent/DE59501159D1/de not_active Expired - Fee Related
- 1995-08-22 AT AT95113141T patent/ATE161469T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1016777A (fr) * | 1950-04-27 | 1952-11-21 | Cylindre d'impression pour presses à imprimer | |
DE1125448B (de) * | 1960-11-10 | 1962-03-15 | Franz Heinz Adamaszek | Gummizylinder fuer Rotationsgummidruckmaschinen |
DE2946252A1 (de) | 1979-11-16 | 1981-05-21 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zum ausgleich der drucklaengenveraenderung eines papierbogens beim durchlaufen eines oder mehrerer druckwerke einer druckmaschine |
DE3902923A1 (de) | 1988-03-16 | 1989-10-05 | Heidelberger Druckmasch Ag | Bogenfuehrungstrommel fuer bogenrotationsdruckmaschinen |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101168318B (zh) * | 2006-10-23 | 2011-02-02 | 海德堡印刷机械股份公司 | 用于输送页张的滚筒 |
CN106183386A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机 |
CN106183387A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机 |
CN106183371A (zh) * | 2016-07-08 | 2016-12-07 | 江苏华宇印涂设备集团有限公司 | 印铁机用印版滚筒 |
Also Published As
Publication number | Publication date |
---|---|
DE59501159D1 (de) | 1998-02-05 |
EP0705690B1 (fr) | 1997-12-29 |
DE4434828C1 (de) | 1995-11-16 |
ATE161469T1 (de) | 1998-01-15 |
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