WO2004039534A2

WO2004039534A2 - Rotative bodies of a printing press and method for producing said bodies

Info

Publication number: WO2004039534A2
Application number: PCT/DE2003/003526
Authority: WO
Inventors: Karl Robert SCHÄFER; Wolfgang Robert Josef Felgenhauer
Original assignee: Koenig & Bauer Aktiengesellschaft
Priority date: 2002-10-31
Filing date: 2003-10-23
Publication date: 2004-05-13
Also published as: EP1569798A2; DE10250683B3; CN101229705A; WO2004039534A3; DE50309498D1; EP1569798B1; AU2003283194A1; AU2003283194A8; CN101229705B; ATE390281T1

Abstract

The invention relates to a rotative body of a printing press and to a method for producing said body. The rotative body (01) comprises a base body (28) with a surface (29). According to said method, an external body (38) comprising at least one slot or groove that forms a flow channel (37) is placed on the surface (29) of the base body (28) and a covering (36) that covers the flow channel is placed on the external body (38).

Description

description

Method for producing rotating bodies and rotating bodies of a printing press

The invention relates to methods for producing rotary bodies and a rotary body of a printing press according to the preamble of claim 1, 5 or 14.

DE 4338467 C1 discloses a method for producing a sleeve-shaped printing form, in which a plate-shaped, metallic raw form of the printing form is cut to length by means of a laser beam and plate edges forming the beginning and the end of the printing form are welded to one another without overlap by means of the laser beam.

WO 01/26902 A1 discloses a cylinder of a rotary printing press, the cylinder having a tubular or solid base body with at least one helical channel on its surface and an outer body surrounding the base body with a circular cross-section, the outer body covering the channel by shrinking on is applied to the base body and a tempering agent for tempering the outer surface of the cylinder flows through the channel.

The invention has for its object to provide methods for producing rotary bodies and a rotary body of a printing press.

The object is achieved by the features of claim 1, 5 or 14. The advantages that can be achieved with the invention are, in particular, that an expensive deep-hole drilling is not required to form a flow channel in the rotating body, which has a particularly favorable effect in the production of a rotating body of great axial length. The flow channels formed in a separate component are applied as an outer body to the base body and covered by a cover which forms the outer surface of the rotary body. In this case, the contours of the flow channels z. B. can be formed inexpensively in the outer body by a laser-assisted cutting process. The advantageous position of the flow channels enables efficient temperature control. The preferred electron beam welding process or laser welding process for connecting the outer body and cover to the main body allows the main body to be heated in a locally very narrow welding zone, as a result of which the main body remains tension-free and free of distortion despite the supply of heat. It is also advantageous that a base body made of a more corrosive, more unstable material by welding a z. B. plate-shaped cover made of a more corrosive resistant material can be protected against corrosion. In the same way, the outer surface of the rotating body can also be made more wear-resistant.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Each shows in a partial section:

1 shows a profile body introduced into the bale of the rotary body with a tensioning channel running in it;

Fig. 2 shows a rotating body with a welded into the bale

Profile body; Fig. 3 shows a rotating body with a welded into the bale

Profile body and with a protective layer applied to the bale;

Fig. 4 shows a rotating body with one applied to the bale

Cover;

5 shows a rotary body with a cover applied to the bale and with flow channels formed in the bale in addition to the tensioning channel;

6 to 9 a rotary body with a tension channel formed in the bale and with flow channels, the flow channels being formed in an outer body which can be applied to the bale and being covered by a cover;

10 to 12 a rotary body with several outer bodies plugged onto its base body, the outer bodies with their flow channels being covered by a cover in the form of a cylindrical sleeve.

If the rotary body 01 is configured, for example, as a forme cylinder 01 or as a transfer cylinder 01 of a printing unit, this cylinder 01 can be z. B. an elevator 03 or two elevators 03 and axially, ie its length with z. B. up to six elevators 03. In the case of a forme cylinder 01, the elevators 03 are mostly designed as plate-shaped printing forms 03. In the case of a transfer cylinder 01, the elevators 03 are preferably rubber printing blankets 03 each applied to a carrier plate. There is a plate-shaped printing form 03 or a carrier plate for a rubber printing blanket 03 usually made of a flexible but otherwise dimensionally stable material, e.g. B. made of an aluminum alloy.

The printing unit in which the cylinder 01 described above is used can, for. B. be designed as a 9-cylinder satellite printing unit, in which four pairs each consisting of a forme cylinder 01 and a transfer cylinder 01 are arranged around a common impression cylinder, z. B. at least the forme cylinder 01 can each have the features of the solution proposed here. Arrangements in which a forme cylinder 01 is in its axial direction, ie. H. next to one another with up to six plate-shaped printing forms 03 and along its circumference either with a plate-shaped printing form 03 or in succession with two plate-shaped printing forms 03. Such a forme cylinder 01 rolls on a transfer cylinder 01, the z. B. is axially occupied with up to three rubber blankets 03 arranged side by side, each rubber blanket 03 spanning the full circumference of the transfer cylinder 01. The rubber printing blankets 03 thus have twice the width and length of the plate-shaped printing plates 03. The forme cylinder 01 and the transfer cylinder 01 preferably have the same geometrical dimensions with regard to their axial length and their circumference. A trained as a cylinder 01 body 01 has z. B. a diameter of, for example, 140 mm to 420 mm, preferably between 280 mm and 340 mm. The axial length of the bale 02 of the cylinder 01 is, for. B. in the range between 500 mm and 2400 mm, preferably between 1200 mm and 1700 mm. As an alternative to the configuration of the rotary body 01 as a cylinder 01, it can also be used as a printing material, e.g. B. paper leading roller 01 may be formed.

1 shows a partial section of a bale 02 of the rotating body 01, a tensioning channel 06 running in the bale 02 in its axial direction. The tensioning channel 06 is at least to an outer surface 07 of the bale 02 of at least a profile body 04 introduced into the bale 02 is limited. On the lateral surface 07 of the bale 02 is an elevator 03, z. B. a flexible plate-shaped printing form 03, fastened in that at the ends of the elevator 03 beveled legs 08; 09 is inserted into the tensioning channel 06, which has an opening 11 directed towards the outer surface 07 of the bale 02, and there essentially on the walls 12; 13 of the opening 11 are created. The tensioning channel 06 can have different cross-sectional geometries without influencing the invention.

Without restricting the invention to the following simplified illustration, the description of the invention is here for the sake of simplicity as if on the bale

02 only a single elevator 03 wrapping around the bale 02 is to be fastened. For the person skilled in the art can easily understand that a plurality of lifts 03 can be attached to the bale 02 both in its axial direction and in its circumferential direction, in which case a plurality of tensioning channels 06 must also be provided in the case of several lifts 03 in the circumferential direction.

Seen in the direction of production P of the rotating body 01, the elevator 03 to be fastened on the bale 02 has a leading end 16 and a trailing end 17, each with a bent leg 08; 09 on. Likewise, the opening 11 of the tensioning channel 06 has a front edge 18 seen in the production direction P of the rotating body 01, from which a wall 12 extends to the tensioning channel 06, and a rear edge 19, from which a wall 13 also extends to the tensioning channel 06 , The opening 11 is long and narrow on the outer surface 07 of the bale 02 and is thus slit-shaped, the slot width S compared to the depth t of the tensioning channel 06, which, for. B. 28 mm to 35 mm, preferably 30 mm, is small and dimensioned such that a leg 08 at the leading end 16 of an elevator

03 and a leg 09 at the trailing end 17 of the same or - in the case of several elevators 03 fastened in the circumferential direction of the rotating body 01 - a similar elevator 03 can be arranged one behind the other in the opening 11. Are advantageous Slot widths S of less than 5 mm, preferably in the range from 1 mm to 3 mm. The ratio of the depth t of the tensioning channel 06 to the slot width S is therefore preferably approximately 10: 1 to 15: 1. The opening 11 can extend entirely or only partially over the length of the bale 02.

An acute opening angle α is formed between the wall 12 extending from the front edge 18 to the tensioning channel 06 and an imaginary tangent T lying on the lateral surface 07 of the rotary body 01 on the opening 11, which angle is between 30 ° and 60 °, preferably 45 ° is. The slot width S of the opening 11 thus tapers towards the lateral surface 07 of the rotary body 01 and it increases towards the tensioning channel 06. The leg 08 at the leading end 16 of the elevator 03 can be attached to the front edge 18 of the opening 11, so that this leg 08 preferably bears in a form-fitting manner on the wall 12 extending from the front edge 18 to the tensioning channel 06. In the example shown in FIG. 1, the wall 13 on the rear edge 19 of the opening 11 slopes approximately perpendicular to the tensioning channel 06. However, the wall 13 can also be slightly inclined, so that the opening 11 widens towards the tensioning channel 06. An angle β, which results as the opening angle β between the wall 13 extending from the rear edge 19 to the tensioning channel 06 and the already mentioned tangent T lying on the lateral surface 07 of the rotary body 01 on the opening 11, is z. B. in the range between 85 ° and 95 ° and is preferably 90 °.

The tensioning channel 06 generally extends in the axial direction of the rotary body 01. A z. B. in the bottom 14 of the tensioning channel 06 or the profile body 04 recessed to the tensioning channel 06 groove 21, in which a rigid, preferably plate-shaped holding means 22 - preferably loosely - is set and pivotally mounted. The holding means 22 can, for. B. a metallic strip 22 extending longitudinally in the tensioning channel 06. The groove 21 is therefore the bearing point and support point of the as a lever 22 designed holding means 22. In order to be able to pivot the holding means 22 in the groove 21, the width B of the groove 21 is larger than the thickness D of the holding means 22. The holding means 22 is designed such that it has a first upper one one of the two walls 12 or 13 of the opening 11 can be placed on the end 23 and a second lower end 24 opposite the opening 11, this lower end 24 being supported in the groove 21.

A preferably pre-tensioned spring 26 is supported at one end on the profile body 04 and at the other end on the holding means 22, preferably close to the first upper end 23 of the holding means 22, so that the holding means 22 acting as a lever 22 from its bearing point in the groove 21 to the spring 26 forms the longest possible arm. An actuating means 27 counteracts the contact pressure exerted by the spring 26 via the holding means 22 on the wall 13, which extends from the rear edge 19 of the opening 11, so that when the actuating means 27 is actuated, one with the holding means 22 on the wall 13 release caused clamping if necessary. The adjusting means 27 is preferably a hose 27 running in the longitudinal direction of the tensioning channel 06, which is connected to a pressure medium, for. B. compressed air can be applied. Accordingly, all of the components that are required to hold an elevator 03 on the lateral surface 07 of the bale 02 are arranged and stored in the tensioning channel 06.

The explanations given here for the design and use of the proposed rotary body 01 are intended to apply correspondingly to all the embodiments described below.

In one embodiment shown in FIG. 2, at least one profile body 04 is introduced into the bale 02 in order to produce the rotary body 01 such that the profile body 04 spatially delimits a tensioning channel 06 at least on the lateral surface 07. The profile body 04 is preferably introduced into the bale 02 cohesively, in particular by a welding process, e.g. B. by electron beam welding or by laser welding. As an alternative to a welding process, brazing in a vacuum could also be used, whereby a solder paste applied to the joint surface runs as a result of a capillary action and finally leads to a very firm solder joint even under shear stress if the complete rotating body 01 is heated in a vacuum. To insert the profile body 04 into the rotary body 01, the profile body 04 is advantageously inserted into a groove 31 preferably milled into the lateral surface 07 of the bale 02, regardless of the subsequently used connection technique. If the profile body 04 is block-shaped, the width W31 of the groove 31 and the width of the profile body 04 are preferably adapted to one another in a play fit or a transition fit. The profile body 04, which extends in the axial direction of the rotary body 01, preferably has a strip-like shape and can be formed in one or more parts. As illustrated in FIGS. 2 and 3, it is e.g. B. not absolutely necessary that the profile body 04 forms a bottom 14 in the tensioning channel 06. As an alternative to a profile body 04 as a molded part, the profile body 04 can be integrally formed in a welding process at least on or near the lateral surface 07 of the bale 02 by applying a material. A corrosion-resistant stainless steel is particularly suitable as the material for a profile body 04 designed for welding. The holding means 22 arranged in the tensioning channel 06, the spring 26 and the adjusting means 27 are no longer shown in FIG. 2 and the subsequent figures for the sake of clarity. For details in this regard, reference is made to FIG. 1. The width W31 of the groove 31 can at least on the lateral surface 07 z. B. between 10 mm and 50 mm, preferably between 12 mm and 30 mm.

The profile body 04 has on a side facing the lateral surface 07, ie on its end face 34 z. B. a slot-shaped opening 11 as access to the tensioning channel 06. Alternatively, two profile bodies 04 can be provided, which are at least on the lateral surface 07 due to their spacing in the axial direction of the rotary body 01 form a slot-shaped opening 11. The cross section of the tensioning channel 06 can preferably be round or rectangular. The tensioning channel 06 preferably runs in the axial direction of the rotary body 01. The profile body 04 can be designed in the form of a strip and, in a section transverse to the axial direction of the rotary body 01, essentially angular.

On the lateral joining surfaces between the profile body 04 inserted into the groove 31 and the bale 02 there are welding zones 32 which have only a very small width in the direction of the circumference of the bale 02, B. protrude over a large part of the depth of the profile body 04 in the bale 02. By bundling the radiation that emits their respective energy source, the proposed welding methods enable locally restricted heating of the bale 02 with a great depth effect. For example, in electron beam welding, the width of each welding zone 32 with a welding depth of 5 mm directed in the bale 02 is z. B. 1 mm, at a depth of 20 mm z. B. 2 mm and at a depth of 40 mm z. B. 3 mm. In laser welding, the welding zones 32 are designed to be somewhat wider, so that the width and depth of each welding zone 32 are in a ratio of approximately 1: 5. Welding depths of 15 mm to 20 mm may be sufficient for the application at hand. The maximum depth required is z. B. at 50 mm.

For welding, it is advantageous to design at least a part of the joint surface near the lateral surface 07 between the bale 02 and the profile body 04 arranged in the groove 31 to be smooth-walled and non-curved in a cut transverse to the axial direction of the rotary body 01. The welding zones 32 can e.g. B. run approximately perpendicular to the lateral surface 07 of the bale 02 and thus be arranged approximately radially to the rotating body 01 or they have a deliberately chosen and essentially dependent on the geometry of the profile body 04 an inclination angle to the lateral surface 07 of the bale 02. In any case, the welding zones 32 penetrate straight into the bale 02 in accordance with the beam path of the energy source. The welding zones 32 do not necessarily have to extend over the entire length of the bale 02, but can e.g. B. be formed only selectively or in several spaced apart short sections of only a few millimeters in length. The welded sections can e.g. B. 5 mm to 25 mm, preferably about 10 mm long and repeated at intervals of 20 mm to 50 mm, preferably in 30 mm to 40 mm in the axial direction of the rotating body 01. As an alternative to the preferred welding processes, in particular the electron beam welding process or

Laser beam welding process, it is also possible to glue the profile body 04 into the bale 02. With adhesive bonding, curved joining surfaces between the bale 02 and the profile body 04 are also unproblematic.

The profile body 04 and the bale 02 may well consist of different materials. For the profile body 04, a corrosion-resistant material is preferably chosen, for. B. an alloyed, corrosion-resistant steel or an aluminum bronze, whereas the bale 02 z. B. from an unalloyed C22 steel and thus from a more susceptible to corrosion material. In particular, an embodiment of the rotating body 01 with materials of different corrosion behavior leads to an embodiment in which it can be advantageous to insert the at least one profile body 04 into the groove 31 with a slight protrusion a or to form it on the groove 31 with a slight protrusion a, whereby the projection a measures a few tenths of a millimeter, so that the profile body 04 inserted into the groove 31 slightly protrudes beyond the lateral surface 07 of the bale 02 by the projection a (FIG. 3). On the lateral surface 07 of the bale 02, the z. B. can consist of an inexpensive unalloyed C22 steel, a corrosion-resistant protective layer 33 is advantageously applied, the protective layer 33 z. B. may be a coating based on nickel or iron-austenite-cobalt which can be applied in a high-speed flame-spraying process or a coating made of titanium oxide which can be applied in a flame-spraying process. This protective layer 33 can also, in whole or in part, face 34 of the face of the surface 02 of the bale 02 Cover profile body 04. After the application of the protective layer 33, the entire coated outer surface 07 of the bale 02 is preferably turned or sanded, whereby the end surface 34 of the profile body 04 is partially or completely exposed again by the protective layer 33 and a continuous, smooth transition from the profile body 04 to the outer surface 07 of the Ballens 02 is ensured. In this embodiment of the rotating body 01, an elevator 03 applied to the bale 02 only comes into contact with corrosion-resistant surfaces, because both the lateral surface 07 of the bale 02 and the profile body 04 are each designed to be corrosion-resistant at least on the contact surfaces with the elevator 03.

4 shows an embodiment of the rotary body 01, in which a cover 36 is applied to a surface 29 of a base body 28 of the bale 02. The base body 28, together with its surface 29, can be made of an inexpensive material which is more susceptible to corrosion, e.g. B. consist of an unalloyed C22 steel. The cover 36, however, is preferably made of a corrosion-resistant material, for. B. an alloyed, corrosion-resistant steel and is applied cohesively on the surface 29 of the base body 28, preferably welded, in particular by electron beam welding or by laser welding. Due to their depth effect, these preferred welding methods allow the cover 36, the radial material thickness, i. H. Thickness is only a few millimeters, preferably 2 mm and at most 10 mm, welded through and a secure and thus permanent, firm connection of the cover 36 to the surface 29 of the base body 28 can be produced. Welding zones 32 extending into the base body 28, which are shown in FIGS. 4 to 6 in simplified form by lines, are preferably formed equidistantly along the circumference of the bale 02 or its base body 28.

The tensioning channel 06, which preferably runs in the direction of the length of the bale 02, can — as shown in FIG. 4 — either directly in the base body 28 be introduced or be formed in the manner described above in connection with FIG. 2 in connection with a profile body 04, the profile body 04 advantageously integrally, preferably by using a welding process, in particular by electron beam welding or by laser welding, or by gluing to the base body 28 is inextricably linked. Regardless of the introduction of the tensioning channel 06 into the base body 28, the cover 36 has a slot-shaped opening 11 to the tensioning channel 06 at all functionally required locations, this opening 11 being introduced into the cover 36, preferably milled in, preferably after the cover 36 the surface 29 of the base body 28 has been applied. The slot-shaped opening 11 is therefore introduced into the cover 36 at least as part of a holding device, it being possible for an elevator 03 which can be applied to the surface 29 to be aged with the holding device. An example of a holding device is shown in FIG. 1, which is why reference is made to the relevant description for details of the holding device. After opening 11 has been made in cover 36, e.g. B. in the base body 28 of the tensioning channel 06, provided that the opening 11 does not provide access to an already existing in the base body 28 tensioning channel 06. The slot width S of the opening 11 is in the range of a few millimeters, preferably it is at most 5 mm, in particular 1 mm to 3 mm (FIG. 1). The opening 11 can extend over the entire length of the bale 02 or only in sections of this length.

If the tensioning channel 06 is formed in the base body 28 in the manner described above in connection with FIG. 2, FIGS. 4 and 5 show a special embodiment of the groove 31 made in the base body 28, into which a profile body 04 can be inserted. The groove 31 shown in FIGS. 4 and 5 has an undercut in the base body 28. Such a shape of the groove 31 can, for. B. with a T-shaped cutter in the base body 28. The advantage of the undercut is that a z. B. in the axial direction of the rotary body 01 in the base body 28 inserted profile body 04 by the undercut in the radial Direction of the rotating body 01 is secured against unintentional loosening from the groove 31.

4 that the cover 36, which closes the bale 02 on its outer surface 07, has an opening 11 with a smaller slot width S than the width W31 of the groove 31. The ratio of the width W31 of the groove 31 to the slot width S of the opening 11 is preferably between 5: 1 and 15: 1. As already mentioned, the slot-shaped opening 11 can be introduced into the cover 36 after the cover 36 has been applied to the surface 29 of the base body 28. At this opening 11 z. B. by milling the front edge 18 described in connection with FIG. 1 with the wall 12 extending from this edge 18 at the opening angle α to the tensioning channel 06 and the rear edge 19 with the wall extending approximately perpendicular to the tensioning channel 06 13 formed or molded on the opening 11. For further details on the configuration of this opening 11, reference is made to the description of FIG. 1.

Furthermore, as can be seen from FIG. 5, a flow channel 37, in particular a cooling channel 37, which is open in the direction of the lateral surface 07 of the bale 02, can be introduced into the base body 28, which then is covered by the cover 36 applied to the surface 29 of the base body 28 is covered. Advantageously, a plurality of flow channels 37 are provided in the base body 28 along its circumference, which are preferably equidistant from one another and which, for. B. have a rectangular cross section. Flow channels 37 designed in this way can preferably be milled into the base body 28, e.g. B. with a side milling cutter.

The flow channels 37 can be flowed through by a liquid heat transfer medium, for. B. of water or an oil. It is advantageous to line the flow channels 37 at least partially, ie at contact points with the base body 28, with a plastic, in particular around that To thermally isolate flow channels 37 flowing through the heat transfer medium from the base body 28. The fact that the flow channels 37 in this embodiment of the rotary body 01 can be arranged very close to the lateral surface 07 thereof enables very efficient temperature control to be achieved, in particular if the cover 36 is thin-walled, ie only a few millimeters, preferably 2 mm and at most 10 mm thick is trained. As shown in FIG. 5, both at least one tension channel 06 and at least one flow channel 37 or more flow channels 37 can be formed in a bale 02 or its base body 28, which are preferably parallel to one another and in the direction of the length of the bale 02 or whose base body 28 extend. In the case of a plurality of flow channels 37, a welding zone 32 is preferably formed in each case between adjacent flow channels 37. A welding zone 32 is preferably also formed between a tensioning channel 06 and an adjacent flow channel 37. It is advantageous to arrange the welding zones 32 equidistantly along the circumference of the bale 02. By using welding processes with very narrowly defined heating zones, the channels, ie the tensioning channel 06 and / or the at least one flow channel 37, can be arranged closely spaced on the circumference of the bale 02. Welding processes with very narrowly defined heating zones have the advantage that the rotary body 01 remains practically free from warping despite this heat-producing manufacturing process. Even plastic linings installed in the flow channels 37 are not deformed by the supply of heat in the proposed preferred welding methods.

The cover 36 is preferably designed as a tubular hollow cylinder and can be pushed onto the base body 28 for its assembly. The cover 36 can, however, also be designed in the form of a shell, in particular in several parts, with a plurality of arcuate segments being applied in the direction of the circumference to the surface 29 of the base body 28. By applying the cover 36, which preferably consists of a corrosion-resistant and advantageously also of a wear-resistant material can be used for the base body 28 of the rotary body 01, the z. B. consists of a cheaper unalloyed and non-corrosion-resistant material, a noble outer surface 07 can be produced in a technically advantageous manner.

A particularly advantageous embodiment will now be explained with reference to FIGS. 6 to 9. Fig. 6 shows a partial section of the bale 02 of the rotating body 01, wherein in the base body 28 of the bale 02 z. B. at least one clamping channel 06 is arranged. A plurality of flow channels 37 are preferably arranged in an outer body 38 along the circumference of the bale 02 and are covered by a cover 36 in the manner described above. This embodiment differs from the embodiment described in connection with FIG. 5 in that the flow channels 37 are not introduced into the surface 29 of the base body 28, but are applied to it by means of a separate component, ie the outer body 38. In a preferably cylindrical tubular outer body 38, which can be pushed onto the base body 28, z. B. by a cutting method, preferably by a laser cutting method, in particular by a rotary laser beam cutting method, the contours of the preferably several flow channels 37 z. B. introduced in the form of mutually parallel elongated holes or at least grooves or channels. FIG. 9 shows a perspective view of this outer body 38. The preferred machining method of the outer body 38 for introducing the flow channels 37 allows any contours for the configuration of the flow channels 37. B. arranged in groups axial slots, ie slots that extend in the axial direction of the rotating body 01. The lateral surface 07 of the bale 02, ie here the cover 36 in this embodiment, is advantageously in zones 41 to be tempered; 42 divisible. This outer body 38, which is preferably perforated to a certain extent, is pushed onto the base body 28 after the incisions of the flow channels 37 have been formed therein and there integrally with the surface 29 of the base body 28 connected, e.g. B. glued, but preferably welded, the welding method used in particular electron beam welding or laser welding. If necessary, the bale 02 with the outer body 38 fastened thereon is z. B. machined with a lathe on its lateral surface 07 by the first applied outer body 38 and then the cover 36 to achieve good concentricity for the rotating body 01 or be ground. Thereafter, in the manner previously described in connection with FIGS. 4 and 5, the cover 36, which is preferably made of a corrosion-resistant material, is applied to the outer body 38, with the cover 36 the flow channels 37 introduced into the outer body 38 and optionally one or covers at least temporarily a plurality of tensioning channels 06 introduced into the base body 28. Welding zones 32 can either only connect the cover 36 to the outer body 38 or penetrate the cover 36 and the outer body 38 and extend into the base body 28 (FIG. 6). 7 and 8 show the layer structure of the rotating body 01 in a longitudinal section. In this figure it can also be seen that the cover 36 is preferably integrally connected to the surface 29 of the base body 28 between the end faces 39 of the base body 28, in particular on at least one web formed between the flow channels 37. 8 is an enlarged detail of this longitudinal section.

An alternative embodiment to the embodiment shown in FIGS. 6 to 9 is shown in FIGS. 10 to 12. An outer body 38 in the form of a cylindrical sleeve is pushed onto the preferably closed cylindrical surface of the base body 28 which extends over the axial length of the rotary body 01, the outer body 38 having a plurality of preferably axially extending grooves along its circumference, each groove preferably as a flow channel 37 can be used. Over the axial length of the rotating body 01 are preferably a plurality of outer bodies 38, preferably the same width z. B. by plugging onto the rotating body 01 such strung together that all of the grooves formed on the lateral surface, preferably on the outer surface of the outer body 38, complement each other to form a continuous flow channel 37 that extends over the axial length of the rotary body 01.

A heat transfer medium guided on at least one end face 39 of the rotary body 01 through a channel into the rotary body 01 is, for. B. inside a shaft through the rotating body 01 through to close to the opposite end face 39 of the rotating body 01. By means of preferably a plurality of radial bores, the heat transfer medium is fed from there to the end openings of the grooves of the outer body 38, which is outermost in the axial direction of the rotary body 01, and is introduced into the grooves, after which the heat transfer medium moves the grooves in the direction of the end face 39 of the rotary body 01, at which the heat transfer medium in was passed through the rotating body 01, flows through. By means of radial bores, the heat transfer medium emerging at the front openings of the grooves of the last outer body 38 in the axial direction of the rotary body 01 can be fed to a channel for the collective removal of the heat transfer medium from the rotary body 01. The grooves, in particular the grooves flowed through by the heat transfer medium, can, for. B. have a rectangular cross section (Fig. 12) or a round or semicircular cross section (Fig. 11).

In this embodiment, the outer body 38 is preferably made of a plastic such. B. manufactured in an injection molding process, for. B. made of a polyamide, and is able to thermally insulate the heat transfer medium flowing through the flow channels 37 preferably against the base body 28. After the outer body 38 required for the axial length of the rotary body 01 has been plugged onto the base body 28 and the alignment of its respective grooves to form continuous flow channels 37, the outer body 38 on the base body 28 is preferably by a material connection, z. B. fixed by an adhesive and attached. Then a z. B. formed as a cylindrical sleeve cover 36 on the outer body 38th applied in such a way that the grooves made in the outer bodies 38 are covered. The preferably thin-walled cover 36 is, for. B. positively pushed onto the outer body 38 and preferably cohesively on the outer bodies 38 or on the base body 28 or on both. B. attached by welding or gluing. The cover 36 is preferably made of a corrosion-resistant and wear-resistant metallic material.

The particular advantage of the rotary body 01 embodied in a layer structure is that no flow channels 37 need to be introduced into the base body 28, as a result of which a complex processing step in the manufacture of the rotary body 01 is eliminated. Some rotating bodies 01 require an arrangement of twenty and more flow channels 37 for effective temperature control of the lateral surface 07 of their bale 02 along the circumference, which in turn z. B. by means of a deep hole with a diameter of z. B. 20 mm to 25 mm in the bale 02 or the base body 28 are introduced. Especially with large lengths of the bale 02 or the base body 28 of z. B. 1900 mm to 2400 mm, such a production of the rotary body 01 is complex and therefore expensive. It is therefore advantageous to manufacture an outer body 38 with flow channels 37 as a separate component and then to apply it to the surface 29 of the base body 28 and to connect it there to the base body 28 in a materially bonded manner.

LIST OF REFERENCE NUMBERS

01 rotating body, cylinder

02 bales

03 elevator, printing form, rubber

04 profile body

05 -

06 clamping channel

07 lateral surface

08 thighs

09 thighs

10 -

11 opening

12 wall

13 wall

14 bottom

15 -

16 leading end

17 trailing end

18 front edge

19 rear edge

20 -

21 groove

22 holding means, bar, lever

23 first end

24 second end

25 -

26 spring

27 adjusting means, hose 28 basic body

29 surface (28)

30 -

31 groove

32 welding zone

33 protective layer (02)

34 end face (04)

35 -

36 cover

37 flow channel, cooling channel

38 outer body

39 end face

40 -

41 zone

42 zone

a protrusion (04)

B width (21)

D thickness (22)

P production direction (01)

S slot width (11) t depth (06)

T tangent

W31 width (31)

α opening angle ß opening angle

Claims

Expectations

1. A method for producing a rotary body (01) of a printing press with a base body (28) with a cylindrical surface (29), characterized in that an outer body (38) with at least one incision on the surface (29) forming a flow channel (37) ) of the base body (28) and a cover (36) covering the flow channel (37) is applied to the outer body (38).

2. The method according to claim 1, characterized in that the incision of the flow channel (37) is made by a cutting process in the outer body (38).

3. The method according to claim 2, characterized in that the incision of the flow channel (37) is made by a laser cutting process in the outer body (38).

4. The method according to claim 3, characterized in that the incision of the flow channel (37) is made by rotating laser beam cutting in the outer body (38).

5. A method for producing a rotary body (01) of a printing press with a base body (28) with a cylindrical surface (29), characterized in that an outer body (38) formed as a cylindrical sleeve with at least one groove forming a flow channel (37) its outer surface is pushed onto the base body (28) and a cover (36) covering the flow channel (37) is applied to the outer body (38).

6. The method according to claim 1 or 5, characterized in that the outer body (38) is integrally connected to the surface (29) of the base body (28).

7. The method according to claim 1 or 5, characterized in that the cover (36) covering the flow channel (37) with the outer body (38) is integrally connected.

8. The method according to claim 6, characterized in that the outer body (38) on the surface (29) of the base body (28) is welded or connected by brazing in vacuo to the surface (29) of the base body (28).

9. The method according to claim 7, characterized in that the cover (36) is welded to the outer body (38) or is connected by brazing in a vacuum to the surface (29) of the base body (28).

10. The method according to claim 6 or 7, characterized in that the cover (36) or the outer body (38) are welded by electron beam welding or by laser welding.

11. The method according to claim 1 or 5, characterized in that the cover (36) in several welding zones (32) on the surface (29) of the base body (28) is welded.

12. The method according to claim 1 or 5, characterized in that a slot-shaped opening (11) is milled into the cover (36) as access to a clamping channel (06) arranged in the base body (28).

13. The method according to claim 1 or 5, characterized in that the outer body (38) after its application on the surface (29) of the base body (28) or the cover (36) after its application on the outer body (38) Turning or grinding can be processed.

14. Rotary body (01) of a printing press with a base body (28) with a cylindrical surface (29), wherein a cover (36) at least partially forming the lateral surface (07) of the rotary body (01) covers a flow channel (37), characterized that an outer body (38) arranged between the base body (28) and cover (36) has at least one incision forming the flow channel (37) or at least one groove forming the flow channel (37) on its surface facing away from the base body (28).

15. Rotary body (01) according to claim 14, characterized in that at least the cover (36) consists of a corrosion-resistant material.

16. Rotary body (01) according to claim 14, characterized in that the cover (36) and the outer body (38) consist of a corrosion-resistant material.

17. The rotary body (01) according to claim 14, characterized in that the outer body (38) is integrally connected to the surface (29) of the base body (28).

18. The rotary body (01) according to claim 14, characterized in that the cover (36) covering the flow channel (37) is integrally connected to the outer body (38).

19. The rotary body (01) according to claim 14, characterized in that the cover (36) is welded onto the outer body (38).

20. The rotary body (01) according to claim 19, characterized in that the cover (36) is welded to the outer body (38) in equidistant welding zones (32) along the circumference of the base body (28).

21. The rotary body (01) according to claim 19, characterized in that the welding zones (32) extend through the cover (36) into the outer body (38).

22. The rotary body (01) according to claim 19, characterized in that the welding zones (32) extend through the cover (36) and the outer body (38) into the base body (28).

23. The rotary body (01) according to claim 17, characterized in that the outer body (38) is glued to the surface (29) of the base body (28).

24. The rotary body (01) according to claim 18, characterized in that the cover (36) is glued to the outer body (38).

25. The rotary body (01) according to claim 14, characterized in that the base body (28) has at least one clamping channel (06).

26. The rotary body (01) according to claim 25, characterized in that the tensioning channel (06) is at least temporarily or at least partially covered by the cover (36).

27. The rotary body (01) according to claim 25, characterized in that the cover (36) has a slot-shaped opening (11) as access to the tensioning channel (06).

28. The rotary body (01) according to claim 25, characterized in that at least a profile body (04) delimits the tensioning channel (06) at least partially on the surface (29) of the base body (28).

29. The rotary body (01) according to claim 28, characterized in that the profile body (04) is integrally connected to the base body (28).

30. The rotary body (01) according to claim 29, characterized in that the profile body (04) is welded to the base body (28).

31. The rotary body (01) according to claim 28, characterized in that the profile body (04) is integrally formed on the base body (28) by welding.

32. rotary body (01) according to claim 14, characterized in that the flow channel (37) is at least partially lined with a plastic.

33. rotary body (01) according to claim 14, characterized in that the flow channel (37) can be flowed through by a heat transfer medium.

34. Rotating body (01) according to claim 14 or 25, characterized in that the tensioning channel (06) or the flow channel (37) extend in the axial direction of the rotating body (01).

35. Rotary body (01) according to claim 14, characterized in that a plurality of flow channels (37) are introduced in the outer body (38) along its circumference.

36. Rotating body (01) according to claim 35, characterized in that a welding zone (32) is formed in each case between adjacent flow channels (37).

37. The rotating body (01) according to claim 25, characterized in that at least one tensioning channel (06) and at least one flow channel (37) are formed in the rotating body (01).

38. Rotating body (01) according to claim 38, characterized in that a welding zone (32) is formed between a clamping channel (06) and a flow channel (37).

39. rotary body (01) according to claim 14, characterized in that the outer body (38) has flow channels (37) in the form of groups of axial slots.

40. Rotary body (01) according to claim 14, characterized in that the cover (36) can be subdivided into zones (41; 42) to be tempered by the arrangement of the flow channels (37) in the outer body (38).

41. Rotating body (01) according to claim 14, characterized in that the outer body (38) is cup-shaped.

42. Rotating body (01) according to claim 14, characterized in that the outer body (38) is designed as a tubular hollow cylinder.

43. Rotating body (01) according to claim 14, characterized in that the cover (36) is cup-shaped.

44. rotary body (01) according to claim 14, characterized in that the cover (36) is designed as a tubular hollow cylinder.

45. Rotating body (01) according to claim 14, characterized in that the cover (36) or the outer body (38) are thin-walled.

46. The rotary body (01) according to claim 45, characterized in that the cover (36) has a material thickness of at most 10 mm in the radial direction of the rotary body (01).

47. Rotating body (01) according to claim 14, characterized in that the outer body (38) can be pushed onto the base body (28) for its assembly.

48. Rotating body (01) according to claim 14, characterized in that the cover (36) can be pushed onto the outer body (38) for its assembly.

49. Rotating body (01) according to claim 14, characterized in that in the axial direction of the rotating body (01) a plurality of identical outer bodies (38) are lined up in such a way that all of the grooves formed on the lateral surface of the outer body (38) each form an overlap complete the axial length of the rotary body (01) extending through flow channel (37).

50. rotary body (01) according to claim 14, characterized in that the outer body (38) is made of a plastic.

51. Rotating body (01) according to claim 50, characterized in that the outer body (38) is made of a polyamide.

52. Rotating body (01) according to claim 14, characterized in that the heat transfer medium flowing through the flow channel (37) is thermally insulated from the base body (28).