Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F27/00—Devices for attaching printing elements or formes to supports
  • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes

Definitions

• Cylinder of a printing machine with at least one extending under the lateral surface in the axial direction of the channel
• the invention relates to a cylinder of a printing machine with at least one extending under the lateral surface in the axial direction of the channel according to the preamble of claim 1 or 2.
• DE 102 44 574 A1 discloses a cylinder of a printing press with at least one channel running under its lateral surface in the axial direction thereof, wherein a retaining device arranged in the channel exerts a force on at least one end of an elevator arranged or to be arranged on the lateral surface of the cylinder the holding device is assigned at least one adjusting means, the at least one actuating means in its actuated operating state counteracting the force exerted by the holding device on the at least one end of the arranged on the lateral surface of the cylinder or elevator to be arranged force, wherein the force exerted by the actuating means on one of their Minimum value or maximum value different value is adjustable.
• WO 03/091024 A1 discloses a device for fastening at least one elevator on a cylinder of a rotary printing press, wherein the cylinder has at least one channel with an opening directed towards the jacket surface of the cylinder with a first wall and a second wall, wherein in the channel at least one spring element and a clamping piece are provided for clamping at least one leg inserted into the opening of a trailing end of the elevator in the direction of production of the cylinder, wherein the clamping piece is formed as a pivotable lever having a first end and a second end, wherein the clamping piece with its second end is mounted opposite the opening in a bearing, wherein the spring element is supported on a supporting point such that the spring element exerts a force on the clamping piece such that the first end of the clamping piece directly or indirectly clamps at least the leg applied to the first wall of the opening in a clamping point and at the same time by a clamping point caused counterforce fixed the second end of the clamping piece at its bearing point.
• WO 2004/002742 A1 discloses a cylinder of a printing unit of a rotary printing press with one or more elevators arranged on its lateral surface, wherein an axial length of the cylinder is subdivided into a plurality of successive sections, wherein in one or more sections in the circumferential direction of the cylinder or more elevators are arranged, wherein the width of the lifts in each case corresponds to the width of one or more sections, wherein at least two circumferentially offset from each other of the cylinder arranged channels are provided, each extending in the axial direction of the cylinder under the lateral surface and each in the area at least one portion having an opening to the lateral surface, wherein at least one channel extends in at least a portion under an arranged in this section on the lateral surface elevator, wherein for securing the elevators in the channels in those sections where Weni at least one end of at least one elevator extends through an opening in the respective channel, in the axial direction side by side a plurality of base bodies are arranged
• the invention has for its object to provide cylinders of a printing press with at least one extending under the lateral surface in the axial direction channel, wherein a holding device arranged in the respective cylinder of the printing press not only has the two operating positions "open” or “closed”, but additionally wherein at least one further operating position is provided, in which a lift arranged on the lateral surface of this cylinder is secured, in its position but still changeable.
• the achievable with the present invention consist in particular in that a arranged in a cylinder of a printing press holding device not only the two operating positions “open” or “closed” has, but that additionally at least one further operating position is provided, in which a on the lateral surface of this Cylinder arranged elevator though secured, in its position but still changeable.
• the operating position "open” means that the holding device no, ie unfolds their lowest clamping effect, whereas in the operating position "closed” the holding device exerts its full, ie maximum clamping effect.
• an elevator arranged on the lateral surface of this cylinder can, for example, be axially displaced and aligned axially, because the at least one end of this elevator Not only in a narrow axial section of this cylinder is significantly reduced, but, for example, over its entire length.
• a transfer cylinder juxtaposed blankets can be so easily joined to each other at its running in the circumferential direction butt seam reduced clamping force is such that it holds the elevator on the lateral surface of this - if any - rotating cylinder only at a very low rotational speed, a rotation of this cylinder with its production speed is not in this new operating condition permissible, because the reduced clamping force on the holding device amount is significantly below the centrifugal force occurring at production speed.
• the solution found leads to the advantage that only limited by a maximum length of his bale arbitrarily wide elevators on the lateral surface of this cylinder can be arranged, per cylinder or at least per channel only a single compressed air supply is required. Even when changing from a plurality of juxtaposed elevators only a single and not several actuations for the arranged in a particular channel holding devices is required. It is a great advantage in the production of printed products that cylinder according to the invention with arbitrarily wide elevators are symmetrical and asymmetrical assignable.
• the same cylinder can optionally z. B. are covered with a blanket or with two or three blankets. This variability is advantageous because it so without modification of the affected cylinder in the simplest way z. B. can be reacted to a changed in a production width of a printing material.
• the cylinder is simplified by the found solution in its production. Continuous channels can be z. B. finished by a hole or by milling a groove finished as sections staggered channels. Also, the solution found simplifies the compressed air distribution on the cylinder in question. The cylinder needs only a single and not multiple compressed air connections.
• Fig. 1 shows a device for fixing a plate-shaped printing plate on a Cylinder
• FIG. 2 shows a device for fastening a printing blanket transferring a printed image to a cylinder
• FIG 3 shows one of the cylinders of Figure 1 or 2 with a continuous slot-shaped opening.
• Fig. 4 shows an assignment of the cylinder of Figure 3 with three elevators.
• Fig. 5 is a semi-transparent representation of the cylinder gem. Fig. 4;
• Fig. 6 is a schematic representation of a cylinder gem. Fig. 3 to 5 in section;
• Fig. 7 shows three perspective views a), b) and c) of a compressed air supply
• FIG. 8 shows a longitudinal section of the compressed air supply device shown in a first operating position. Fig. 7;
• FIG. 9 shows a longitudinal section of the compressed air supply device shown in a second operating position. Fig. 7;
• Fig. 10 is a further schematic representation of the compressed air supply according to. Fig. 7 in longitudinal section;
• Fig. 1 1 is a perspective view of a limited in its travel actuating means
• Fig. 12 is a perspective assembly representation of juxtaposed Base bodies
• Fig. 13 shows one of the elevators to be held by a holding device in its extended length
• FIG. 15 shows the printing unit of FIG. 14 with cooperating cylinders in a second mode of operation
• Fig. 16 shows the printing unit of Fig. 14 with cooperating cylinders in a third mode.
• FIG. 1 After a first embodiment shown in FIG. 1 is on a lateral surface 02 of a cylinder 01 a, z. B. a forme cylinder 01 a an elevator 03 a, z. B. a plate-shaped, preferably flexible printing forme 03a, thereby attached that at the ends of the elevator 03a bent leg 04; 05 in a cylinder 01 a under the lateral surface 02 arranged channel 06 a, which has a to the outer surface 02 of this cylinder 01 a directed opening 07, introduced and there substantially to the mantel vomnahen walls 08; 09 of the opening 07 are created.
• the printing forme 03a has z.
• Example a thickness in the range between 0.15 mm and 0.9 mm, in particular between 0.2 mm and 0.5 mm, preferably about 0.3 mm.
• the folded legs 04; 05 of the printing plate 03a also at the area of the opening 07 subsequent and deeper inside the cylinder 01 a lying wall 10 of the channel 06a abut, because the boundary between the walls 08; 09 of the opening 07 and the wall 10 of the channel 06a is flowing.
• the channel 06a can without a the Invention hindering influence have different cross-sectional geometries, but - as shown in the figures - a circular cross-section manufacturing technology favorable.
• the channel 06a z. B. on a rectangular cross-section.
• the lift 03a to be fastened on this cylinder 01a has a leading end 11 and a trailing end 12, each with a bevelled leg 04; 05 on.
• the opening 07 of the channel 06a has a seen in the production direction P of the cylinder 01 a front edge 13, from which a first wall 08 extends to the channel 06a out, and a rear edge 14, from which a second wall 09 also to the channel 06a extends.
• the opening 07 is formed on the lateral surface 02 of the cylinder 01 a long and narrow and thus slit-shaped, with a directed in the circumferential direction of the cylinder 01 a slot width S of the opening 07 on the lateral surface 02 compared to a depth t of the channel 06a low and so is dimensioned that a leg 04 of a leading end 1 1 of an elevator 03a and a leg 05 of a trailing end 12 of the same or - at more in the circumferential direction of the cylinder 01 a mounted lifts 03a - a similar elevator 03a in the opening 07 are arranged one behind the other.
• slot widths S of less than 5 mm, preferably in Range from 1 mm to 3 mm.
• the depth t of the channel 06a is z. B. between 20 mm and 50 mm and is preferably 30 mm to 35 mm.
• an imaginary, on the lateral surface 02 of the cylinder 01 a on the opening 07 resting tangent T is formed an acute angle ⁇ , the z. B. between 30 ° and 70 °, in particular between 40 ° and 50 °, preferably 45 °.
• a region extending from the channel 06a to the opening 07 narrows towards the lateral surface 02 of the cylinder 01a, or, in a reverse consideration, increases towards the channel 06a.
• the leg 04 of the leading end 1 1 of the elevator 03a is z. B. at the front edge 13 of the opening 07 can be suspended, so that this leg 04 preferably rests on the extending from the front edge 13 to the channel 06a wall 08 positively.
• the wall 09 drops at the rear edge 14 of the opening 07 approximately perpendicular to the channel 06a.
• 09 may also be slightly inclined so that the area extending from the opening 07 to the channel 06a widens.
• An angle ß which results as an opening angle between the extending from the rear edge 14 to the channel 06a wall 09 and the already mentioned, resting on the outer surface 02 of the cylinder 01 a on the opening 07 tangent T is z. B. in the range between 60 ° and 120 °, in particular between 80 ° and 95 ° and is preferably 90 °.
• the channel 06a extends as a rule parallel to the axis of rotation of the cylinder 01 a.
• a recess for example, a groove 15, into which or in a plate-shaped, dimensionally stable holding means 16 - preferably loose - set and is pivotally mounted.
• the groove 15 is accordingly bearing 24 and supporting point 24 of the designed as a lever holding means 16.
• a width a15 of the groove 15 is at least slightly larger than a thickness a16 of the holding means 16. Die Bearing 24 of the holding means 16 can except for in the position shown in FIG.
• the holding means 16 is designed in such a way that it has a first upper end 18 which can be placed against one of the two walls 08 or 09 of the opening 07 and a second lower end 19 which is opposite the opening 07.
• At the holding means 16 is at least one spring element 17, for. B. a trained as a leaf spring 17 compression spring 17 is mounted, which preferably so directly on the front edge 13 of the opening 07 extending wall 08 and on the wall 10 of the channel 06a is supported, thereby both the pivotally mounted second lower end 19 of the holding means 16 at its bearing point 24, d. H.
• the holding means 16 and the at least one spring element 17 thus form, in their interaction, an effective holding device in the channel 06a.
• the holding means 16 preferably cooperates with several spring elements 17 at the same time.
• the at least one spring element 17 is preferably biased and thus stabilizes the holding means 16 in its position in the channel 06a and secures the holding means 16 z. B. against accidental falling out of the opening 07 during a rotation of the cylinder 01 a.
• the at least one spring element 17 by its support in the support point 23, ie in particular by the position and / or shaping of this support point 23, a holding means 16 at its bearing point 24 fixing, in particular whose bearing point 24 exerts pressing force of magnitude sufficient magnitude.
• the support point 23 of the at least one spring element 17 is thus preferably arranged spatially closer to the opening 07 than at the bearing point 24 of the holding means 16.
• the fixation is achieved in a simple manner that the at least one spring element 17 preferably at the front edge 13 of the opening 07 extending wall 08 or on the wall 10 of the channel 06a preferably in direct contact with this wall 08; 10 is supported such that in the support point 23 of the at least one spring element 17 at the same time each forces or force components F1; F2 are received in two perpendicular to each other in the cross-sectional plane of the channel 06a directions.
• This photograph of the forces F1; F2 becomes possible because the support point 23 is located in particular where the wall 08 extending from the front edge 13 to the channel 06a forms a slope facing the bearing means 24 due to the acute angle ⁇ of the opening 07.
• At this slope form in the support point 23 of the at least one spring element 17 each as a counter force to the respective support force components F1; F2 two force components, wherein a force component as a counter force to the force component F2 applied for clamping the inserted into the opening 07 leg 05 required force, whereas another force component in the direction of the bearing 24 of the holding means 16 acts and this holding means 16 presses into the groove 15 and thus stabilized at a rotation of the cylinder 01 a in its position.
• An alternative embodiment for sloping may consist in that the wall 08 extending from the front edge 13 has a recess or is shaped such that the same previously described division of forces can take place in the support point 23 of the at least one spring element 17.
• a correspondingly arranged in the channel 06a helical compression spring 17 is used as a spring element 17.
• the support point 23 of the spring element 17 is preferably located directly on the wall 08.
• this support point 23 can also be located on this with a longer leg 04, so that the at least one spring element 17 is supported only indirectly on the wall 08. In the latter case, this is at least one Spring element 17 is not directly in contact with the wall 08, although the same distribution of forces described above occurs.
• a vertical clearance can be allowed in the groove 15, as long as it is ensured that the holding means 16 dissolves in any operating situation from the opening 07 and is functional for the clamping.
• the support point 23 of the at least one spring element 17 is located at the wall 08 extending from the front edge 13 towards the channel 06a immediately after the end of the leg attached to the front edge 13 04 of the leading end 1 1 of the elevator 03a.
• a distance aO8 between the end of the leg 04 and the support point 23 is preferably less than 5 mm, in particular less than 3 mm.
• a plurality of holding means 16 are each arranged with at least one associated spring element 17, however, only one holding means 16 is arranged in each cross-sectional plane of the channel 06a.
• the contact pressure exerted by the at least one spring element 17 via the holding means 16 on the wall 09 extending from the rear edge 14 of the opening 07 in a contact surface, ie the force acting there, has at least one actuating means 20 preferably arranged in the channel 06a counteracts to solve upon actuation of this at least one actuating means 20 with the retaining means 16 on the wall 09 caused clamping as needed.
• the at least one adjusting means 20 is preferably a hose 20 extending in the longitudinal direction of the channel 06a and made of an elastic material, for. As a plastic or rubber, wherein the tube 20 by an introduction of a pressure medium, for. B. compressed air, can be acted upon in its interior with pressure and consequently stretchable at least in its radial direction.
• the hose 20 may be enclosed by an abutment 21.
• the abutment 21 of this actuating means 20 is in this case an enclosure, located at the wall 10 of the channel 06a supported and reduced by their shape required for releasing the clamping volume expansion of the tube 20 and thus contributes to a shorter reaction time of the actuating means 20.
• an abutment 21 in the form described here may be dispensable.
• FIG. 1 also shows that the leg 05 of the trailing end 12 may be configured as a rocker, said rocker after insertion of the leg 05 in the opening 07 of the channel 06a with its bearing point 22 on the wall 09 the opening 07 is supported.
• the edge 14 of the opening 07, to which a leg 05 of the trailing end 12 of the elevator 03a designed as a rocker is formed it may also be the case that the bearing 22 of the rocker is already on the wall 10 of the channel 06a is located.
• the elevator 03a thus has at its trailing end 12 a bent leg 05 which is shaped such that this leg 05 again an additional, from the wall 09 at an acute angle of z. B.
• the position of the bearing 22 of the rocker may be selected such that between the bearing point 22 of the rocker and the bending of the leg 05 at the edge 14 of the opening 07 is an approximately twice as long lever arm results as between the bearing 22 of the rocker and the Clamping point 25 between the leg 05 and the holding means 16.
• This solution has the advantage that manufacturing tolerances in the circumferential direction of the cylinder 01 a directed length I of the elevator 03a can be compensated in a simple manner (Fig. 13).
• Lifts 03a with no or only insufficient tension along the circumference of the cylinder 01 a on the lateral surface 02 of the Cylinders 01 a rest, tend to move during a rotation of the cylinder 01 a on the lateral surface 02. Incidentally, it can come to a break, for example, at the trailing end 12 for a not fully overlying the outer surface 02 of the cylinder 01 a lift 03a by the flexing work exerted on him during the production process of the cylinder 01 a.
• the holding means 16 clamps the elevator 03a not only in the manner described above, but the elevator 03a is additionally tensioned with the leg 05 formed as a rocker.
• the rocker of the leg 05 and the at least one spring element 17 in their interaction and in conjunction with the holding means 16 for the elevator 03a form a restraining system that compensates for a change in length of the elevator 03a automatically.
• Fig. 2 shows a device for fixing a print image transferring blanket 30 on a cylinder 01 b, z. B. on a transfer cylinder 01 b of an offset printing machine, wherein the blanket 30 on one on the lateral surface 02 of the cylinder 01 b resting, flexible, but dimensionally stable in their surface extension support plate 31 is applied and the support plate 31 folded at its two opposite ends to be fastened Leg 34; 35, which are in a cylinder 01 b arranged in the channel 06 b with a directed to the outer surface 02 of the cylinder 01 b opening 07 are inserted.
• the elevator 03b used here is generally a complex layer structure, but which consists at least of a carrier plate 31 and a printing blanket 30 applied thereto. A z.
• the support plate 31 to be fastened to the cylinder 01 b has a leading end 32 and a trailing end 33 in the production direction P of the cylinder 01 b.
• the opening 07 of the channel 06b has a front edge 13 seen in the production direction P of the cylinder 01b with a first wall 08 extending into the channel 06b and a rear edge 14 having a second wall 09 likewise extending into the channel 06b.
• an acute angle ⁇ the z. B. between 30 ° and 70 °, in particular between 40 ° and 50 °, preferably 45 °.
• the leg 34 of the leading end 32 of the support plate 31 is located on the extending from the front edge 13 first wall 08 in a form-fitting manner.
• the leg 35 of the trailing end 33 of the carrier plate 31 is also preferably located on the first wall 08, namely - with most of its surface and preferably frictionally engaged - directly on the leg 34 of the leading end 32 of the support plate 31st
• the leg 35 of the trailing end 33 of the support plate 31 is therefore bent at an obtuse angle at an angle ⁇ , the z. B. in a range between 120 ° and 150 °, in particular between 130 ° and 140 ° and preferably ⁇ ⁇ 135 °.
• the extending from the rear edge 14 to the channel 06b wall 09 forms with the already mentioned, resting on the outer surface 02 of the cylinder 01 b on the opening 07 tangent T as in the example described above an angle ß, ranging in the range between 60 ° and 120 °, in particular between 80 ° and 95 °, and is preferably nearly rechtwinkg, z. B. 89 °
• a cantilevered, inherently stable clamp 36 has a first (upper) end 38 and a second (lower) end 39, with the second (lower) end 39 in a bearing 40 preferably near the bottom the channel 06b is pivotally mounted, wherein the bearing 40 z. B. is formed as a recess in a base body 41 and the recess for the lower end 39 of the clamping piece 36 z. B. has a supporting surface 44.
• the bearing 40 of the clamping piece 36 may - as previously explained in connection with the first embodiment - deviate clockwise by up to about 30 ° from a going out of the opening 07 Lot on the front edge 13 side facing, in particular, an angle between 15 ° and 20 ° be advantageous.
• the base body 41 is preferably secured in the channel 06b against rotation.
• the base body 41 may be made of a plastic or of a metallic material. If a plurality of clamping pieces 36 are provided in the longitudinal direction of the channel 06b, the clamping pieces 36 are preferably each arranged in a base body 41, wherein usually a group of these base body 41 in the channel 06b is strung together.
• At least one spring element 37, z. B. a helical compression spring 37 or a leaf spring 37, which is preferably surrounded by the base body 41 and z. B. supported in it at a support point 43 and forms a holding device together with the clamping piece 36, with the first (upper) end 38 of the clamping piece 36 on the on the wall 08 of the front edge 13 superimposed legs 34 and 35 a force, ie in the contact surface a contact pressure, exerted, whereby both legs 34 and 35 are clamped to the first wall 08.
• the first (upper) end 38 of the clamping piece 36 is supported at the nip 45 between the clamping piece 36 and the leg 35 at the trailing end 33 of the support plate 31 of the elevator 03b at the extending from the front edge 13 of the opening 07 wall 08 and on the wall 10 of the channel 06b from that at the clamping point 45 forces F1 simultaneously; F2 are recorded in two perpendicular directions in the cross-sectional plane of the channel 06b directions.
• the nip 45 is again due to the acute angle ⁇ on a slope. In this embodiment, the nip 45 is therefore in the of the two The holding device with the pivotally mounted clamping piece 36, in particular the bearing point 40 of the clamping piece 36, thus remains stationary due to their support and the associated distribution of forces in the channel 06b.
• the at least one spring element 37 is preferably biased and causes, in particular in conjunction with the rotation of the base body 41 by its force on the clamping piece 36, that the clamping piece 36 is fixed in its storage by the action of a magnitude sufficiently large force component.
• the channel 06b has a circular cross-section. However, this cross section could also be rectangular.
• the base body 41 is preferably adapted in its outer shape of the contour of the channel 06b or is supported at least at three support points on the wall 10 of the channel 06b. For example, located on the base body 41 as a stop integrally formed lock 42, the z. B. projects into the opening 07 extending region and is supported on the second wall 09 of the opening 07.
• the base body 41 is secured against rotation, in particular in a circular channel 06b.
• Such anti-rotation of relatively inexpensive, z. B. made of a plastic base body 41 is particularly advantageous if in the channel 06a; 06b z. B. a groove 15 for the holding means 16 and clamping piece 36 is not provided, because of an introduction of a groove 15 z. B. has been omitted for cost reasons.
• the base body 41 may, for a corresponding cross-sectional geometry of the channel 06b, z. As an angular, also be designed so that it is supported against rotation on the wall 10 of the channel 06b.
• At least one adjusting means 20 is provided which counteracts the force exerted by the at least one spring element 37 via the clamping piece 36 on the first wall 08 of the opening 07 force, so that upon actuation of the at least one actuating means 20 with the Clamp 36 at the first wall 09 caused clamping is at least partially solved.
• pneumatically actuated actuating means 20 is again preferably a running in the longitudinal direction of the channel 06b tube 20, which is acted upon by a pressure medium, for example compressed air.
• the at least one adjusting means 20 is preferably enclosed by the base body 41.
• the two embodiments shown have in common that in the channel 06a; 06b a holding means 16 or clamping piece 36 on one side, ie only at one end 19; 39 is pivotally - preferably loosely - stored, wherein by at least one standing with the holding means 16 and clamping piece 36 in operative connection spring element 17; 37 both a clamping of the leg 05; 35 of the trailing end 12; 33 of the elevator 03a and the support plate 31 and at the same time a fixation of the holding means 16 and clamping piece 36 in its bearing 24; 40 is achieved.
• the fixation of the holding means 16 or clamping piece 36 and the at least one spring element 17; 37 formed holding device is such that, including the between the holding means 16 and clamping piece 36 and the legs 05; 35 of the trailing end 12; 33 of the printing plate 03a and the support plate 31 existing nip 25; 45, the at least one spring element 17; 37 due to its bias the holding means 16 or clamping piece 36 in the cross-sectional plane of the channel 06a; 06b optionally stabilized against rotation with the aid of an integrally formed on the base body 41 lock 42.
• the holding means 16 or clamping piece 36 is at least during the clamping operation with respect to its position in or to the channel 06a; 06b stationary.
• the at least one spring element 17 is supported; 37 or the holding means 16 or clamping piece 36th indirectly or directly in a support point 23; 43 or nip 45 on that wall 08; 09 from, in the opening 07 of that wall 08; 09 facing, on which the lock 43 is supported with its stop.
• Figures 1 and 2 thus each show devices for securing at least one elevator 03a and a support plate 31 on a cylinder 01 a; 01 b with a on the wall 10 of the channel 06 a; 06b or on the walls 08; 09 of the opening 07 z. B.
• These devices for securing at least one elevator 03a or a support plate 31 on a cylinder 01 a; 01 b can in the same printing a z. B. in an offset printing process rotary printing machine can be realized by a cylinder 01 a rolls with a printing forme 03 a according to the first embodiment on a cylinder 01 b with a lift 03 b according to the second embodiment.
• rolls on the outer surface 02 of the first cylinder 01 a fixed plate-shaped printing plate 03a on a blanket 30, which is applied by means of a support plate 31 on the outer surface 02 of the second cylinder 01 b.
• the cylinder 01 a according to the first embodiment forms a forme cylinder 01 a and the cylinder 01 b according to the second embodiment, a transfer cylinder 01 b.
• a holding means 16 and z. B at least one leaf spring 17 existing, in the channel 06 a of the forme cylinder 01 a arranged holding device to be enclosed by a base body 41, wherein Recesses in the base body 41 allow the previously described pivotability and support of the holding device.
• This printing unit is then z. B. also characterized in that between the extending from the rear edge 14 to the channel 06 a of the forme cylinder 01 a wall 09 and on the lateral surface 02 of the forme cylinder 01 a on the opening 07 resting tangent T is formed approximately right angle ß wherein the trailing end 12 of the printing forme 03a is held at the wall 09 extending from the rear edge 14 to the channel 06a, and that the leg 35 at the trailing end 33 of the support plate 31 rests against the opening 07 of the transfer cylinder 01b Tangent T bent at an obtuse angle ⁇ and is held together with the leg 34 at the leading end 32 of the support plate 31 at the extending from the front edge 13 to the channel 06b wall 08.
• Fig. 3 shows a perspective view of one of the previously described with reference to Figures 1 or 2 cylinder 01 a. 01 b, wherein a cylinder 01 a; 01 b its length after passing slot-shaped opening 07 is clearly visible. Since the opening 07 a arranged under the lateral surface 02 channel 06a; 06b opens, runs this channel 06a; 06b continuously from an end face 46 of this cylinder 01 a; 01 b up to its opposite end face 46.
• the cylinder 01 a; 01b is z. B. as a 4/2 or 6/2 forme cylinder 01 a with in its axial direction either four or six juxtaposed printing plates 03a and z. B.
• the circumference of the respective cylinder 01 a; 01 b is z. In the range between 280 mm and 410 mm; its axial length can be z. B. between 1 .000 mm and 2,600 mm.
• the relevant cylinder 01 a; 01 b can z. B. be used in a 9-satellite printing unit or in a H-pressure unit.
• the forme cylinder 01 a and also cooperating with him Transfer cylinder 01 b are each z. B. formed as a double circumferential cylinder.
• the substrate 59 is preferably a respective printing unit continuous material web 59, z. B. a paper web 59 used.
• Fig. 4 shows a variant of the cylinder 01 b shown in FIG. 3 (01 a) in the axial direction side by side with three blankets 30, in particular metal blankets 30, occupied.
• a transfer cylinder 01 b trained cylinder 01 b z. B. three elevators 03b arranged.
• Fig. 5 shows the cylinder 01 b of Fig. 4 again in a semi-transparent representation in which two of the three lifts 03 b or blankets 30 are not shown, wherein in the translucent part of the cylinder 01 b shown the continuous channel 06 b with several therein aligned basic bodies 41 is visible.
• the continuous channel 06 b with several therein aligned basic bodies 41 is visible.
• filling elements 47 are arranged, which are similar to the base bodies 41 in their outer contour, but which have no holding device.
• FIG. 6 shows one of the cylinder 01 a shown in FIG. 3; 01 b in a simplified longitudinal section.
• This cylinder 01 a; 01 b has in its axial direction next to each other z.
• B. six sections A; B; C; D; e; F, these sections A; B; C; D; e; F correspond with mounting locations, at each of which a lift 03a; 03b can be arranged.
• the cylinder 01 a; 01 b has two circumferentially offset by 180 ° to each other, this cylinder 01 a; 01 b in each case in its axial direction completely continuous channels 06a; 06b, wherein in these channels 06a; 06b one of the explained in connection with FIGS.
• each of the channels 06a; 06b in association with the respective sections A; B; C; D; e; F lined-up base body 41 is provided, with which a in the relevant section A; B; C; D; e; F arranged elevator 03a; 03b by an at least on its trailing end 12; 33 applied force on the lateral surface 02 of the respective cylinder 01 a; 01 b is held.
• At least one preferably pneumatic adjusting means 20 acts upon actuation of the at least one spring element 17; 37 via the holding means 16 and clamping piece 36 at the nip 25; 45 applied force, so that the local clamping with the operation of the respective actuating means 20 is released.
• the cylinder 01 a; 01 b by means of a on an end face 46 of the respective cylinder 01 a; 01 b attached compressed air supply 48 supplied, which is preferably designed as a rotary inlet
• Compressed air supply device 48 in FIG. 7 in a first partial drawing a) in the cylinder 01 a; 01 b attached state, in a second partial drawing b) as a single part and in a third partial drawing c) in conjunction with a partial sectional view X - X is shown. 8 and 9 again show in each case a longitudinal section through this compressed air supply device 48 shown in FIG.
• this compressed air supply device 48 has a rotationally fixed annular outer part 49 on which connections 51; 52, in particular pneumatic connections 51; 52 are formed for the compressed air supply, and one with a journal of the cylinder 01 a; 01 b connected, together with the respective cylinder 01 a; 01 b rotatable inner part 53, which is why this type of Druckmaschinezucited vibration 48 is also referred to as a rotary inlet. Part of the z. B.
• outer part 49 of the compressed air supply device 48 is movable relative to the inner part 53 in the axial direction, so that the outer part 49 has at least two stable, adjustable operating positions, namely a first operating position, passed in the externally supplied compressed air to the inner part 53 and then into the respective cylinder 01 a; 01 b is introduced, and another second operating position in which the compressed air supply to the respective cylinder 01 a; 01 b is locked, because externally supplied compressed air can not be passed to the inner part 53.
• a single compressed air supply device 48 is provided, ie only at one of its end faces 46.
• Fig. 10 shows the compressed air supply device 48 again in a longitudinal section in a schematic representation.
• the pneumatic connection 52 shown by way of example in FIGS. 8 to 10 close to the bale of the relevant cylinder 01 a; 01 b is used in the channels 06a; 06b to be introduced compressed air supply for actuating the actuating means 20 arranged there, whereas the two smaller, especially in Figs. 8 to 10 recognizable pneumatic connections 51 actuation of the inner part 53 displaceable outer part 49 is used, ie the choice of the respective operating position.
• the compressed air supply device 48 is preferably remotely operable. In Fig.
• 6b is preferably introduced radially into the outer part 49 of the compressed air supply device 48, it is then coaxial with the relevant cylinder 01a from the inner part 53 of the compressed air supply device 48a.
• 01 b forwarded, ie in an end face 46 of the respective cylinder 01 a; 01 b introduced (Fig. 6 to 10), wherein the distribution of the introduced compressed air from this single port 52 then by means of corresponding lines 50 and z. B.
• the compressed air distributing device takes place, preferably the front side, in particular outside the sections A; B; C; D; e; F, ie outside the printing area of the lateral surface 02 of the respective cylinder 01 a; 01 b, is arranged (Fig. 6).
• At least in the axial direction of the relevant cylinder 01 a; 01b extending part of the lines 50 may be identical in a preferred embodiment with the tube 20, which in the respective channel 06a; 06b is used as adjusting means 20.
• hose 20 actuating means 20 when actuated on all in the respective channel 06a; 06b arranged holding devices act simultaneously and in all juxtaposed sections A; B; C; D; e; F of the relevant cylinder 01 a; 01 b a release of arranged there lifts 03 a; 03b effect.
• the other, in addition to the aforementioned extreme positions provided as "Save" designated operating position of the holding device can be realized by various individually or collectively acting measures.
• a rather control-technical measure can consist in providing the pressure which is effective in the lines 50 and thus in or on the adjusting means 20, in particular air pressure, variably or at least in discrete steps, this setting being effected by a control device, not shown here.
• These compressed air z. B. with different compressed air values via the pneumatic port 52 into the cylinder 01 a; 01 b are fed or in or on the cylinder 01 a; 01b is a device, e.g. As a valve provided, with which or which preferably remotely adjustable in the lines 50 and thus in or on the adjusting means 20 effective air pressure is adjustable.
• Another rather constructive measure may provide that in the case of a subset of those holding devices which are in one of the sections A; B; C; D; e; F on at least one end 12; 33 of the respective elevator 03a; 03b exert a force, the respective force of these respective holding devices is not completely canceled.
• the effect of the at least one actuating means 20 with respect to in the respective channel 06a; 06b arranged in juxtaposed holding devices, which for a particular one of the sections A; B; C; D; e; F are effective, segmented. This can be z. B.
• the at least one adjusting means 20 only to a subset of in association with one of the sections A; B; C; D; e; F in the relevant channel 06a; 06b arranged holding devices acts.
• a travel of the at least one holding means associated adjusting means 20 is limited, so that not all in the relevant section A; B; C; D; e; F arranged holding devices completely abandon their respective clamping action, but rather reduce their respective clamping force only to an intermediate value between its minimum value and maximum value.
• Such a limitation of the travel of the respective actuating means 20 may, for. B. be done by that preferably in the respective channel 06a; 06b at least one stroke limiting the stop is provided.
• a stroke limiting the travel is realized in that the elastic tube 20 is at least partially bordered by a preferably rigid sleeve 56, in particular at least partially encompassed, the cuff 56 still allows compressed air to pass through the tube 20, the However, radially expanding hose 20 is limited in its radial expansion when exposed to compressed air.
• 1 1 is a single assembly in a channel 06a; 06b can be arranged hose 20 having a plurality, here a total of six along its extended length attached cuffs 56, wherein the distances a56 between adjacent, z. B. each formed from a sheet metal strap cuffs 56 are preferably equal in size.
• Compressed air is supplied to this hose 20 via the line 50 or the pneumatic connection 52 so that it widens and thus bulges when subjected to compressed air in the areas between the cuffs 56 or at its beginning and at its end, as a result of which the in 1 not shown respective holding means 16 and clamping piece 36 against the force of the at least one spring element 17; 37 from the respective nip 25; 45 is swung (Fig. 1 and 2).
• Such a functionally segmented tube 20 can in a channel 06a; 06b arranged side by side arranged base body 41 and possibly also at least one filling element 47, as it shows the assembly representation in FIG. 12, in particular in conjunction with
• a holding means 16 or clamping piece 36 can also have a plurality of spring elements 17; 37 assigned.
• An adjustment of the clamping force to an intermediate value between its minimum value and maximum value can also be effected in that, compared to others in the same channel 06a; 06b arranged holding means 16 or clamping pieces 36 a certain holding means 16 or clamping piece 36 or a subset of the aforementioned holding means 16 or clamping pieces 36 each z. B. less spring elements 17; 37 or spring elements 17; 37 with z. B. associated with lower spring force.
• At the different in the same channel 06a; 06b arranged holding devices is thus at least one of the associated holding means 16 or clamping pieces 36 or a subset of these holding means 16 or clamping pieces 36 either a smaller compared to the other holding devices number of spring elements 17; 37 used, in particular when spring elements 17; 37 same or at least comparable spring force can be used, or it will be in the same number of spring elements 17 used; 37 used with different, in particular with a lower spring force.
• If then in the relevant channel 06a; 06b arranged adjusting means 20 z. B. is actuated by an application of compressed air, at a certain set value for the compressed air level, the clamping effect of the relevant channel 06a; 06b arranged holding means 16 or clamping pieces 36 due to the different spring forces not completely, but only partially canceled.
• Fig. 13 shows one of the outer surface 02 of one of the cylinders 01 a; 01 b mountable flexible lifts 03a; 03b in its extended length I, wherein at its respective, opposite ends 1 1; 12; 32; 33 each bent leg 04; 05; 34; 35 are attached (see Fig. 1 and 2).
• the elevator 03a; 03b has a in on the lateral surface 02 of the respective cylinder 01 a; 01 b mounted state in the axial direction of the respective cylinder 01 a; 01 b directed width b.
• FIGS. 14 to 16 each show, in a simplified representation, a printing unit 57, in which a forme cylinder 01 a and a transfer cylinder 01 b of the above-described type cooperate, wherein the transfer cylinder 01 b on a cylinder 58, z. B. impression cylinder 58 rolls, wherein a web of material 59 in a nip between the transfer cylinder 01 b and the impression cylinder 58 is passed.
• the impression cylinder 58 may also be formed as a transfer cylinder 01 b.
• the forme cylinder 01 a is in its axial direction in several, here z. B.
• the transfer cylinder 01 b has on its lateral surface 02 side by side z. B. three the scope of this cylinder 01 a each spanning lifts 03b, z.
• these elevators 03b each have a first width b1, said first width b1 the width of two adjacent sections A; B; C; D; e; F of the forme cylinder 01 a corresponds.
• the forme cylinder 01 a and the transfer cylinder 01 b are each of at least one channel 06 a; 06 b, in which the respective ends of the respective lifts 03 a; 03b are held.
• a first width d of the guided between the transfer cylinder 01 b and the impression cylinder 58 material web 59 corresponds at least approximately to the axial length of the cooperating in this printing unit 57 cylinder 01 a; 01b; 58th
• Fig. 15 shows now the same printing unit 57 as in Fig. 14, but now in the printing nip between the transfer cylinder 01 b and the impression cylinder 58, a web of material 59 is passed with a second width c2.
• elevators 03b are now mounted on the transfer cylinder 01b with a second width b2 different from the first width b1.
• Also on the forme cylinder 01 a made an adjustment in the mounting position and in the width of the respective elevators 03a.
• 01 b could, when using a material web 59 with the width d of the first width d different at least the transfer cylinder 01 b with one of the in the These first elevators 03b preferably each have a third width b3 different at least from the second width b2 of the second number of elevators 03b, which is a further mode of operation the cylinder 01 a; 01 b in this printing unit 57 represents.
• F1; F2 forces or force components at the support point (23) or clamping point (45)

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• 2007
  • 2007-11-29 DE DE102007047892A patent/DE102007047892B4/de not_active Expired - Fee Related
• 2008
  • 2008-10-10 EP EP08805217A patent/EP2214905B1/fr active Active
  • 2008-10-10 WO PCT/EP2008/063613 patent/WO2009068359A1/fr active Application Filing
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  • 2008-10-10 AT AT08805217T patent/ATE514557T1/de active
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