Patent Publication Number: US-7717039-B2

Title: Rotating bodies of a printing press comprising a barrel

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This patent application is the U.S. national phase, under 35 U.S.C. 371, of PCT/DE2003/003527, filed Oct. 23, 2003; published as WO 2004/039588 A1 on May 13, 2004, and claiming priority to DE 102 50 686, filed Oct. 31, 2002, the disclosures of which are expressly incorporated herein by reference. 
     FIELD OF THE INVENTION 
     The present invention is directed to rotating bodies of a printing press with a barrel. The barrel has at least one channel through which a temperature control medium flows. 
     BACKGROUND OF THE INVENTION 
     A cylinder of a printing group, which is embodied as a hollow body, is known from DE 41 19 824 C1 and DE 41 19 825 C1. The cylinder consists of a one-piece cast body constituting an outer body and additionally has, if required, an inner one-piece rotationally-symmetrical cast body. The two cast bodies are made, for example, of cast steel or of gray cast iron and, in the case of DE 41 19 824 C1, are embodied in one piece by the use of connecting strips, or are welded together. 
     A cylinder of a printing group made of gray cast iron is known from DE 42 12 790 A1. For increasing the bending resistance of the cylinder, an axially extending steel core has been cast, centered in the cylinder, which, at the same time, projects as a shaft journal out of the end faces of the cylinder. The gray iron cast cylinder concentrically envelopes the steel core and has hollow spaces. 
     A cylinder of a printing group is known from DE 196 47 067 A1, which cylinder consists of a base body of gray cast iron or of a light metal casting. A cylinder core, which is preferably hollow, has been cast as a stiffening element in the base body. The cylinder core consists, for example, of a steel pipe. Further reinforcing profiles, extending parallel with the longitudinal axis of the cylinder and having a solid or hollow cross section, and possibly with a non-uniform wall thickness, are arranged in a radially outward located area of the base body, are distributed over the circumference of this area and are preferably brought as closely as possible to the shell face of the base body. The stiffening element, and all of the reinforcing profiles are closed off at their respective ends and are completely surrounded by the cast material of the base body. 
     A temperature-controllable double-shelled cylinder is known from Patent Publications DE 861 642 B and DE 929 839 B. A heating or cooling medium, which preferably is air, is passed over a helix-like path within the double cylinder shell. The inner cylinder and the outer cylinder are arranged coaxially at a radial distance of approximately 10 to 20 mm from each other. 
     A temperature-controllable counter-pressure cylinder is known from DE 20 55 584 A, and which has heating chambers in its shell over the entire cylinder width. These heating chambers are connected to a warm water circuit by an inflow line that is arranged axially in a cylinder journal, and an outflow line which is conducted coaxially with the inflow line. 
     A temperature-controllable printing forme cylinder is known from DE 37 26 820 A1, whose interior is completely filled with a liquid. The liquid passes through a first circuit extending outside of the printing forme cylinder. A cooling pipe, which is preferably coil-shaped, penetrates the liquid over the entire cylinder width. A cooling medium, which flows through the cooling tube and which is connected to a second circuit, cools the liquid and therefore cools the cylinder. 
     A cylindrical rotating body for printing presses, which can be temperature-controlled by the introduction of water vapor, is known from DE 93 06 176 U1. Bores or lines, which extend along the rotating body closely under its shell face, are utilized. These bores or lines can have a course differing from axial parallelism, and therefore can have a drop toward the center of the rotating body. 
     A temperature-controllable cylindrical rotating body for printing presses is known from DE 195 10 797 A1. A coolant flows through the entire interior in only one cycle. The rotating body is provided, at one side, with a coolant feed device, and a coolant flow-off device is arranged in a cylinder journal and is connected with a rotary lead-through. 
     A temperature-controllable printing forme cylinder is known from DE 199 57 943 A1, which, in its interior, has casting core chambers, which chambers extend over the width of the cylinder and which are closed off, at the ends of the cylinder body, by covers. A pipe, extending over the cylinder width, is arranged in each chamber. A sealingly displaceable pipe unit, which is connected with a rotary lead-through for the supply and removal of coolant, is arranged in an axial bore of a cylinder journal. At the end of the cylinder equipped with the pipe unit, every pipe is connected, via a radial bore, with the pipe unit. Coolant is supplied and flows through the pipes and flows into the hollow casting core chambers in the area of the oppositely located end of the cylinder and is conducted away from there via a radial bore connected with the pipe unit. 
     A temperature-controllable cylinder for a rotary printing group, and which is embodied with almost completely solid walls, is known from EP 0 557 245 A1. This cylinder has a first line along its rotary shaft, and has several second lines closely underneath its shell face, which second lines are connected with the first line, are preferably arranged equidistant in the circumferential direction and extend parallel with the longitudinal axis, and through which lines a fluid can flow for controlling the temperature of the shell face. 
     A temperature-controllable cylinder for a rotary printing group is known from EP 0 652 104 B1, which cylinder has a cylinder shell pipe, at each one of whose respective ends a flange is arranged. A separating pipe and a feed pipe extend in the interior of the cylinder coaxially in relation to its length. A hollow chamber situated between the separating pipe and the cylinder shell pipe constitutes a cooling chamber, through which cooling chamber a coolant supply via a feed pipe flows. The line in the separating pipe is connected with the cooling chamber via connecting bores in one of the flanges. 
     A temperature-controllable cylinder for a rotary printing group is known from WO 01/26 902 A1 and WO 01/26 903 A1, which cylinder has a pipe-shaped or a solid cylinder base body, and which is surrounded by a pipe-shaped outer cylinder body. For controlling the temperature of the shell face, a channel is formed on the circumference of the cylinder base body, or in a gap between the cylinder base body and the outer cylinder body, and through which a temperature-control medium can flow. The channel can be configured, for example, as an open gap with a ring-shaped clear profile, or as a groove revolving in a helical manner in the axial direction of the cylinder. 
     A heating or cooling roller with a roller body with peripheral bores axially in respect to the roller body for a fluid heat-conducting medium is known from DE 40 36 121 A1. It is the object of this prior device to achieve as uniform a temperature profile as possible over the entire roller body. One embodiment of that roller, for the attainment of this object, provides for lining the peripheral bores with heat-insulating materials, so that the amount of heat emitted by the heat-carrying medium to the roller, per unit of length of peripheral bore, is as constant as possible, in spite of resultant temperature differences in the heat-conducting medium. Therefore, the radial expansion and the temperature at the roller surface are kept as uniform as possible. To this end, the insulating material is placed into the bores in such a way that the insulating material continuously changes the diameter of the bores. Thus, the heat transfer from the heat-conducting medium to the roller body, over the length of the bores, is maintained constant by the thickness of the insulating material introduced into the bores, in spite of a temperature drop occurring along the bores. 
     A device for dampening non-printing locations on planographic printing plates in printing presses is known from DE 629 700 B. A coolant flows through a cooling coil arranged in a plate cylinder. The cooling coil is arranged in a space enclosing an inner part of the plate cylinder with the exception of the cylinder pit, and in particular underneath the printing surface. An insulating layer is arranged between the inner portion of the plate cylinder and the space with the cooling coil. The cooling coil is in metallic contact with the outer wall of the space which faces the printing surface. 
     A cylinder of a printing press is known from the later published DE 103 05 594 A1. A cylinder is constructed of several layers and, in one embodiment, has an internal temperature-control device, which is embodied as a coolant line, for example. The temperature-control device is arranged between a thermal insulation and a support surface for material to be imprinted, such as, for example, a preferably thin-walled cylinder shell. The thermal insulation can be made of a dimensionally stable material, such as, for example, a metal foam or a ceramic material or, if it has been divided into segments, for example, of a felt or fiber material. DE 103 05 594 A1 expressly does not relate to printing forme cylinders, to rubber blanket cylinders or to inking unit rollers. 
     SUMMARY OF THE INVENTION 
     The object of the present invention is directed to providing rotating bodies of a printing press with a barrel. 
     In accordance with the present invention, this object is attained by the provision of a rotary body with a barrel that includes a base body and an outer body. At least one channel, through which a temperature-control medium can flow, and which has an inflow and an outflow, is in heat exchange contact with the outer body. A thermally insulative insert can be placed in the channel. This insert may surround the base body and may be a castable material. 
     The advantages to be gained by the present invention reside, in particular, in that in a cylinder or in a roller with a barrel, which cylinder or roller has a base body, and with an outer body arranged radially outwardly of, and at least partially covering the latter, the base body and the outer body are thermally insulated from each other. This is of particular advantage if at least one channel, through which a medium for temperature control flows, is arranged in the barrel. A rapidly reacting and an as uniform as possible temperature control of the shell face of the barrel can be achieved in this way. It is thus possible, by use of the present invention, to increase the efficiency of the heat exchange between the temperature control medium and the outer body, or the shell of the barrel. Furthermore, the thermal insulation can be produced in a simple way, for example by casting techniques. The barrel, as a whole, can also be produced simply and cost-effectively. By optionally provided geometric designs of the channels, it is possible to maintain the effect of the temperature-control medium approximately constant during its flow through the barrel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Preferred embodiments of the present invention are represented in the drawings and will be described in greater detail in what follows. 
       Shown are in: 
         FIG. 1 , a longitudinal cross-section and a transonic cross-section of a rotating body of a printing press in accordance with a first preferred embodiment of the present invention and with axially extending hollow bodies, in 
         FIG. 2 , a rotating body of a printing press in accordance with the first preferred embodiment with a hollow body extending in a helical line, in 
         FIG. 3 , a rotating body of a printing press in accordance with a second preferred embodiment with a body sealed in a barrel and containing a channel, in 
         FIG. 4 , a rotating body of a printing press in accordance with a third preferred embodiment with a base body and with a solid outer body attached to it, and where hollow spaces have been cut in the outer body, which hollow spaces are open toward the base body, in 
         FIG. 5 , a rotating body of a printing press in accordance with a variation of the third preferred embodiment with a base body and with a solid outer body attached to it, and where hollow spaces have been cut in the outer body, and which are covered by the outer body, in 
         FIG. 6   a , a rotating body of a printing press in accordance with a fourth preferred embodiment of the present invention and with a channel formed in a space between a base body and an outer body, in 
         FIG. 6   b , a rotating body of a printing press in accordance with the fourth preferred embodiment and with a channel formed in a space between a base body and an outer body, in 
         FIG. 7 , a rotating body of a printing press in accordance with a fifth preferred embodiment with a high-strength shaft introduced into the barrel, in 
         FIG. 8 , an embodiment of a hollow body or of a channel of a rotating body with a temperature-controlled shell face, and in which the heat exchange between the shell face and the temperature-control medium is constant, in 
         FIG. 9 , a longitudinal section through a rotating body with a base body, and with an outer body and a sleeve, which sleeve is arranged between the base body and the outer body and has flow channels, in 
         FIG. 10 , a cross-section through the rotating body represented in  FIG. 9 , and in 
         FIG. 11 , a perspective view of the sleeve which is arranged between the base body and the outer body and which is provided with the flow channels. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIGS. 1 and 2  show a first embodiment of a rotating body  01  of a printing press in accordance with the present invention. The rotating body  01  has either a barrel  02 , or a barrel  02  with a base body  17 . At least the base body  17  is made of a cast material. The barrel  02 , or its base body  17 , has an axial length L and has, in its outer area, which is its area closely underneath its shell face  07 , at least one sealed-in pipe-shaped hollow body or conduct  03 ,  04 , enclosed in cast material, and wherein the hollow body or conduct  03 ,  04  extends over the entire length L of the barrel  02 , or of its base body  17 . In accordance with  FIG. 1 , the hollow body or conduct  03 ,  04  can extend, for example, parallel with a longitudinal axis  06  of the rotating body  01  or, as represented in  FIG. 2 , it can extend through the outer area of the barrel  02 , or its base body  17  from one end  11  to the other end  11  in a helical path. In the longitudinal cross-section shown in the left in  FIG. 2 , the helical course of the hollow body or conduct  03  has been drawn in dash-dotted lines for easier understanding of the representation. Regardless of its course, the hollow body or conduct  03 ,  04  forms a channel, through which a temperature-control medium, typically a flow medium for use in controlling the temperature of at least the shell face  07  of the barrel  02 , can flow. The temperature-control medium is preferably a liquid heat-conducting medium such as water or an oil, for example. 
     To introduce the flow medium into, or to remove it from the barrel  02 , the hollow body  03  can be connected with lines  08 ,  09 , which can be attached to the ends of the barrel  02  for example, or which can be introduced there into a flange  36  in the shape of an annular groove  37 , as seen in  FIG. 2 . Also, in the embodiment having several hollow bodies or conducts  03 ,  04  arranged in the barrel  02 , or its base body  17 , these conduct  03 ,  04 , as well as the lines  08 ,  09  connected with them, can advantageously have a common connector on one of the ends  11  of the barrel  02 . 
     It is advantageous, for attaining good temperature control, to arrange the hollow body or conduct  03 ,  04  with its contact face A 07 , which is intended for heat exchange, closely, such as, for example only a few millimeters, and preferably less than 20 mm, underneath the shell face  07  of the barrel  02 . If several hollow bodies or conducts  03 ,  04  are arranged spaced about the circumference U of the barrel  02 , it is advantageous if the temperature-control medium flows in counterflow through adjacent hollow bodies or conducts  03 ,  04 . If several hollow bodies  03 ,  04  are provided in the outer area of the barrel  02 , or its base body  17 , it is advantageous to arrange all of these hollow bodies or conducts  03 ,  04  at the same radial distance a 3 , a 4  from the longitudinal axis  06  of the rotating body  01 , as well as equidistant from each other in the direction of the circumference U of the barrel  02 , so that as uniform a temperature control as possible of the shell face  07  of the barrel  02  can thus be achieved. 
     The hollow body or conduct  03 ,  04  in the rotating body  01 , which has been produced by casting techniques, has a narrow interior diameter D 3 , D 4 , with the interior diameter D 3 , D 4  preferably being less than 25 mm, and in particular being between 15 mm and 20 mm. A channel of such a narrow interior diameter D 3 , D 4  is difficult to produce using conventional casting technology, by the insertion of a casting core into a barrel  02 , or base body  17 , to be cast. It has previously been attempted to drill such a channel into the barrel  02 , or its base body  17 . Such drilling, however, is expensive to accomplish over the length L of the barrel  02 , or its base body  17  and is not without problems in its technical execution. 
     In accordance with the first embodiment of a method for producing a rotating body  01  to insert a pipe-shaped hollow body  03 ,  04 , such as, for example a hollow body  03 ,  04  which is embodied as a pipe, and preferably as a steel pipe, into a casting mold for the barrel  02 , or its base body  17 , and to cast around it. To insure that during the casting process for the barrel  02 , or its base body  17 , the hollow body  03 ,  04  does not become soft, as a result of its being heated, by a temperature action of the molten material of the barrel  02 , or its base body  17 , and thus does not become deformed, it is necessary to embody the hollow body  03 ,  04  as being comparatively thick-walled, with respect to its inner diameter D 3 , D 4 . A wall thickness of the hollow body  03 ,  04  is thus, preferably at least one-fifth of the inner diameters D 3 , D 4 . A suitable wall thickness of the pipe-shaped hollow body  03 ,  04  is preferably at least 3 mm, and in particular is between 5 mm and 6 mm. Furthermore, the pipe-shaped hollow body  03 ,  04  can also be fixed in place and can be stabilized in the casting mold for the barrel  02 , or its base body  17 , by support elements. 
     As depicted in  FIG. 2 , the barrel  02 , or its base element  17 , can be configured as a hollow cylinder  02 , into whose ring-shaped wall the pipe-shaped hollow body  03 ,  04  is sealed. In a printing press, and in particular in an offset printing press, the hollow body  01  can be used as a cylinder  01  which is guiding a material to be imprinted, or as a roller  01  which is guiding a material to be imprinted, or as a roller  01  in an inking unit or a dampening unit. 
     If, for example, the rotating body  01  is utilized as a cylinder  01  of a printing group, this cylinder  01  can be, for example, a forme cylinder  01  or a transfer cylinder  01  of an offset printing press, and wherein this cylinder  01  can be covered, in the direction of its circumference U, with, for example, one dressing or two dressings, and axially, in a direction over its length, with, for example, up to six dressings. In connection with a forme cylinder  01 , the dressings are typically embodied as plate-shaped printing formes. In connection with a transfer cylinder  01 , the dressings are preferably rubber printing blankets that are applied to a support plate. As a rule, such a plate-shaped printing forme, or such a support plate for a rubber printing blanket, is made of a flexible, but otherwise dimensionally-stable material, such as, for example, an aluminum alloy. 
     The printing group, in which the above-described cylinder  01  is employed, can be configured, for example, as a 9-cylinder satellite printing unit, in which satellite printing unit four cylinder pairs, each consisting of a forme cylinder  01  and of a transfer cylinder  01 , are arranged around a common counter-pressure cylinder, and wherein, for example, at least each of the forme cylinders  01  can have the structure to attain the characteristics of the object of the present invention described here. Arrangements are advantageous, in particular for printing newspapers, in which a forme cylinder  01  is covered, in its axial direction, side-by-side with up to six plate-shaped printing formes, and along its circumference U either with one plate-shaped printing forme or with two plate-shaped printing formes arranged one behind the other. Such a forme cylinder  01  rolls off on a transfer cylinder  01  which, for example, is covered with up to three axially side-by-side arranged rubber printing blankets, and wherein each such rubber printing blanket stretches over the full circumference U of the transfer cylinder  01 . Thus, as a rule, the rubber printing blankets have twice the width and twice the length of the plate-shaped printing formes which are used for the forme cylinder  01  that are acting together with the transfer cylinder  01 . In this case, the forme cylinder  01  and the transfer cylinder  01  preferably have the same geometric dimensions with respect to their axial length and their circumference U. For example, a rotating body  01 , which is embodied as a cylinder  01 , has a diameter D 2  of from 140 mm to 420 mm, and, for example, of preferably between 280 mm and 340 mm. The axial length of the barrel  02  of the cylinder lies, for example, in the range of from 500 mm to 2400 mm, and preferably lies between 1200 mm and 1700 mm. 
     The explanations provided above, regarding the arrangement and the employment of the rotating body  01  are intended to apply, in a corresponding manner, to all of the subsequent embodiments hereinafter to be described. 
     As represented in  FIG. 3 , a second preferred embodiment of the rotating body  01  of a printing press in accordance with the present invention can provide that at least one body  12  is arranged in the barrel  02  of the rotating body  01 , or at least in a base body  17  of the barrel  02  made from a castable material, wherein, in a section taken transversely to the axial direction of the rotating body  01 , the body  12  is bordered by two self-contained demarcation faces A 13 ′, A 13 ″, which are spaced apart from each other in the radial direction of the rotating body  01 . Body of these demarcation faces A 13 ′, A 13 ″ border the material of the barrel  02  with their sides facing away from the body  12 . In an interior  13  of the body  12 , which interior  13  is bordered by the demarcation faces A 13 ′, A 13 ″, at least one channel  14 ,  16 , which is bordered by the material of the body  12  and which extends in the axial direction of the rotating body  01 , is formed. 
     In this case, the body  12  can be configured as a cast part which is produced by casting technology, typically as a precast component, wherein the cast part has at least one hollow space in its interior  13  for the formation of at least one channel  14 ,  16 . Alternatively, the body  12  can also be a stamped or a continuously cast product. The body  12  is made of a strong material. A hollow space is formed in this body, preferably close to its demarcation face A 13 ′ facing the shell face  07  of the barrel  02 . The hollow space is bordered by the material of the body  12 , at least in its longitudinal direction. Preferably, the body  12  is homogeneous and is embodied as one piece, or also in several pieces, in the direction of the circumference U of the rotating body  01 . 
     The body  12  advantageously is made of a heat-resistant material, such as, for example, a ceramic material or a hardened metal foam. The heat resistance is necessary so that the body  12  will not be deformed when molten material of the barrel is cast around it during production of the rotating body  01 . An inclusion of the body  12 , into the barrel  02  of the rotating body  01 , which is simple in manufacturing technology terms results, if at least the barrel  02 , or its base body  17  are made of a cast material, such as, for example, of metal, ceramics, glass or plastic, and the body  12  is sealed in the barrel  02 , or in its base body  17  and is enclosed by the cast material. For this purpose, in the course of the production process utilized for producing the rotating body  01 , the body  12  can be placed into the casting mold which will be used for casting the barrel  02 , preferably in the outer area of the to be cast barrel  02 , and will be fixed in place with the possible aid of support elements, and then sealed so that the body  12  is completely enclosed in the casting material of the barrel  02 . In the situation of a ring-shaped or annular embodiment of the body  12 , the space it is enclosed by is preferably filled by the casting material of the barrel  02 , so that the body  12  is at least surrounded by the casting material. 
     Since a temperature-control medium is intended to flow through the channel  14 ,  16  in the interior  13  of the body  12 , in order to control the temperature in at least a partial area of the shell face  07  of the barrel  02 , the body  12  is advantageously arranged in the radially outer area of the barrel  02 . If the entire shell face  07  of the barrel  02  is to be temperature-controlled, the body  12  with its channel  14 ,  16  advantageously extends over the entire length L of the barrel  02 . At least the area of the shell face  07  of the barrel  02  that is corresponding to the area on the shell face  07  of the barrel  02 , which is used for printing, must be temperature-controlled. As was the case in the first preferred embodiment, the rotating body  01  can again be a cylinder  01  that is used for guiding material to be imprinted, or a roller  01  used for guiding a material to be imprinted. 
     A further advantageous embodiment of the body  12  in accordance with the present invention lies in structuring it to be cylinder-shaped, and to preferably match the length of the body  12  to the length L of the barrel  02 . Therefore, the body  12  preferably has the shape of a hollow cylinder or annulus, wherein the space bounded by it can be filled with the material of the barrel  02 . In this case, the body  12  preferably encloses the longitudinal axis  06  of the rotating body  01 . The channels  14 ,  16 , extending in the axial direction of the rotating body  01 , can, in a manner similar to the embodiment represented in  FIGS. 1 and 2 , extend parallel, with respect to the longitudinal axis  06  of the rotating body  01 , or can also be arranged helically in the outer area of the barrel  02 , or of the base body  17 . If several channels  14 ,  16  are provided in the body  12 , the temperature-control medium can pass in counterflow through adjacent ones of these channels  14 ,  16 . 
     In the first two embodiments of the rotating body  01  in accordance with the present invention, as described above, it has been assumed, for the sake of simplicity, and without restricting the invention, that the rotating body  01  is homogeneously constructed, and that the barrel  02  does not have any layered construction which is concentric with respect to the shell face  07 . Otherwise, a distinction would always have to be made between the barrel  02  and its base body  17 , wherein the base body  17  and an outer body  19  surrounding it constitute the barrel  02 . Here, the description is intended to apply to both embodiments. 
     A third embodiment of the rotating body  01  of a printing press, in accordance with the present invention, is shown in  FIG. 4 . The barrel  02  of this rotating body  01  consists of at least a base body  17  with a cylindrical surface  18 , and wherein at least one outer body  19  has been applied to the cylindrical surface  18  of the base body  17 . The outer body  19  preferably consists of at least one curved element, whose associated central angle α is less than 360°. Particularly in connection with a rotating body  01 , which is embodied as a forme cylinder  01  or as a transfer cylinder  01 , the outer body  19  does not form a closed ring in its cross section, but instead has at least one gap  20  which can be used, for example, in connection with a holding device which is not represented in  FIG. 4 , and which is used for holding dressings applied to the rotating body  01 . In connection with rollers which are not to be covered with a dressing, the outer body  19  can be embodied as a closed ring, which closed ring  19  encloses the base body  17  and is connected with the surface  18  of the latter. In an alternative to the above-mentioned embodiment, several outer bodies  19  can also be applied to the surface  18  of the base body  17 . These several outer bodies  19  are arranged, on the surface  18  of the base body  17 , in the direction of the circumference U of the base body  17 . In the latter case, each outer body  19  consists of a curved element, wherein the sum of the central angles αi, in which i is a counting index of the number of curved elements, which are subtended by the curved elements, complement each other to no more than 360°. In particular, two curved elements can be arranged, preferably symmetrically in respect to each other, at the circumference U of the base body  17 . The central angle αi, where i is a counting index of the curved elements, of each curved element preferably is slightly less than 180°. It is thus possible to provide curved elements of the outer body  19  in, for example, the form of half-shells or of quarter-shells. A gap  20  between individual curved elements of the outer body  19  can be a slit-shaped opening facing toward a bracing or securement channel, which is, for example, arranged in the base body  17 , and which is provided with the previously mentioned holding device, and wherein the gap  20  can have a gap width of, for example, less than 3 mm, and preferably of from 1 mm to 2 mm. In both cases of the last mentioned preferred embodiment, as seen in  FIG. 4 , at least one hollow space  21  is provided in the outer body  19 , and wherein the hollow space  21  is open toward the surface  18  of the base body  17 . The outer body  19  constitutes the outermost component of the barrel  02 , so that the outer surface of the outer body  19 , constituting the shell face of the barrel  02 , can be covered with one or with several dressings. The dressing, or the dressings, are each maintained on the rotating body  01  by the holding device which is arranged in the barrel  02 , and, in particular, in its base body  17 , in a bracing or securement channel. If the outer body  19  is embodied as a multi-part assembly, and preferably is embodied as at least two curved elements, each with a central angle αi, where i is a counting index of the curved elements, of, at most, of 180°, the advantage arises, in the course of producing the rotating body  01 , that it is not necessary to introduce the base body  17 , with an exact fit, into the outer body  19 . Instead, the curved elements can be applied to the surface  18  of the base body  17  by the use of a suitable releasable, or preferably by the use of a non-releasable connecting technique, such as for example, by the use of screws or by welding. 
     As seen in  FIG. 5 , the rotating body  01  can also be configured in such a way that its barrel  02  consists of at least one base body with a cylindrical surface  18 , and wherein a hollow space  21 , which is open toward the surface  18  of the base body  17 , is provided in the base body  17 . An outer body  10 , which is attached to the surface  18  of the base body  17 , covers the hollow space  21 . The outer body  19  consists of a curved element, whose associated central angle α is less than 360°. With this variation, the barrel  02  of the rotating body  01  can alternatively consist of a base body  17  with a cylindrical surface  18 , and wherein several hollow spaces  21 , which are open toward the surface  18  of the base body  17 , are provided in the base body  17 . Several outer bodies  19  are arranged on the surface  18  of the base body  17 , in the direction of the circumference U of the base body  17 , and the outer bodies  19 , which are attached to the surface  18  of the base body  17 , cover the respective hollow spaces  21 . In the latter case, each outer body  19  consists of a curved element, wherein the central angles αi, where i is a counting index of the number of curved elements, which belong to the curved elements, complement each other to no more than 360°. 
     With a rotating body  01  in accordance with the third preferred embodiment, as shown in  FIGS. 4 and 5 , namely a rotating body  01  that is consisting of a base body  17  with a massive, and in particular with a not compressibly embodied outer body  19 , of constant radial thickness d 19 , attached to the base body  17 , the outer body  19  can be glued, welded or screwed, for example, to the surface  18  of the base body  17 . Accordingly, the outer body  19  can be attached either permanently or releasably to the surface  18  of the base body  17 . Electron beam welding methods or laser beam welding methods are particularly well-suited welding processes. In this case, it can be sufficient for fastening the outer body  19  onto the base body  17  if the outer body  19  is connected as a material-to-material connection, or as a positive connection with the surface  18  of the base body  17  only at the ends  11  of the barrel  02  in the above-mentioned way. A welding seam, for example, need not extend over the entire length L of the rotating body  01 , and instead can be embodied, for example, in the form of points, or in the form of several short sections of only a few millimeters length, which points or sections are spaced apart from each other. The welded sections can be, for example, 5 mm to 25 mm long, and preferably are approximately only 10 mm long. They can be repeated at distances of from 20 mm to 50 mm, and preferably at distances from 30 mm to 40 mm, in the axial direction of the rotating body  01 . 
     The rotating body  01  can be configured in such a way that at least the base body  17 , and if desired, together with journals  22 ,  23  which are adapted for seating and for driving the rotating body  01 , and which are formed at the ends  11  of the barrel, is forged, or that at least the outer body  19  is made of steel. In the preferred embodiment show in  FIG. 5 , a temperature-control medium flows through a hollow space  21 , which can be cut, for example by milling, into the base body  17  or into an inside  24  of the outer body  19  as seen in  FIG. 4 , for example, for use in controlling the temperature of the shell face  07  of the barrel  02 . The hollow space  21  constitutes a channel  21  for the temperature-control medium. The hollow space  21  can be arranged in the barrel  02  in such a way that the insertion of beveled or angled ends of dressings, which dressings are to be placed on the shell face  07  of the barrel  02 , to a bracing or securement channel arranged, in the customary manner, in the base body  17  is not hindered. A slit-shaped opening of a slit width “S” of less than 3 mm at the shell face  07  of the barrel  02  and extending axially with respect to the rotating body  01 , is sufficient for this access. Thus, the base body  17  and the outer body  19  are joined in such a way that they seal the hollow space  21 . The hollow space  21  can be aligned axially, with respect to the barrel  02 , or can extend in a sinusoidal-like manner along the length “L” of the barrel  02 . If several hollow spaces  21  are provided, it is advantageous to arrange them equidistant from each other along the circumference U of the barrel  02 . As in the previously described embodiments, the rotating body  01  can be a cylinder  01  for guiding material to be imprinted, or a roller  01  for guiding material to be imprinted. 
     A variation of the third embodiment, as shown in  FIG. 4 , however without the gap  20  in the outer body  19 , relates to a rotating body  01  of a printing press with a barrel  02 , wherein the barrel  02  has at least one base body  17  with a cylindrical surface  18 , and an outer body  19  which completely surrounds the surface  18  of the base body  17 . The rotating body  01  in this variation is distinguished in that the outer body  19  has, on its inside  24  at least one channel  21  which is open toward the surface  18  of the base body  17 . The outer body  19  preferably rests on the surface  18  of the base body  17 . The outer body  19  and the base body  17  can be placed atop each other, for example with a press fit. In this embodiment, with a self-contained ring-shaped outer body  19 , it is possible, following the application and the fastening of the outer body  19  on the surface  18  of the base body  17 , to cut, such as, for example, by milling and as required, a gap  20  and an associated bracing or securement channel, or several such gaps  20  and associated bracing or securement channels, into the rotating body  01 , preferably at a location where no channel  21  is formed on the outer body  19 . The gap  20  need not extend over the entire length L of the barrel  02 . The outer body  19  thus remains free of gaps, at least at the ends  11  of the barrel  02 , and therefore remains connected. 
     In a fourth preferred embodiment of the rotating body  01  of the present invention, initially a method of producing it will be explained. This method starts, as can be seen in  FIGS. 6   a  and  6   b , with a rotating body  01  of a printing press and having a barrel  02 . The barrel  02  has at least one base body  17  with a cylindrical surface  18 , and an outer body  19 , which can surround the surface  18  of the base body  17  and which is spaced therefrom at a distance a 19 . The method of this fourth preferred embodiment is distinguished from other embodiments in that at least one strip  26 , which is made of a material that can be liquefied by heating, is initially attached to the inside  24  of the outer body  19 , or to the surface  18  of the base body  17 . The outer body  19  and the base body  17  are then mounted, coaxially covering each other, in that they are preferably pushed onto each other. A hollow space  27  remaining between the base body  17  and the outer body  19 , namely at a location where there is no strip  26  is then filled with a hardenable casting material. Finally, following the hardening of the casting material, at least the outer body  19  is heated in such a way that the material of the strip  26  is liquefied and is removed from the space  27  between the base body  17  and the outer body  19 . In this case, the material of the strip  26  can be, for example, plastic or wax. A synthetic resin, preferably a two-component resin, which solidifies and hardens, for example at room temperature or at a temperature up to 100° C., is suited as the casting material for filling the space  27  between the base body  17  and the outer body  19 , for example. A melting point of the casting material, which can, for example, lie at 350° C., must, in any case, be higher than a melting point of the strip  26 , which melting point can, for example, lie at 150° C. In this way, is it provided that, by the use of the synthetic resin placed into the space  27  between the base body  17  and the outer body  19 , that the outer body  19  is firmly connected with the base body  17 . However, as an alternative to the synthetic resin, an aluminum foam, which hardens, can also be suitable for filling the space  27 . 
     After the at least one strip  26 , which had been arranged between the base body  17  and the outer body  19 , has been removed, preferably thermally, the casting material bordering the previous strip  26  forms a guide surface  28  of a channel  29  after this casting material has become rigid or has hardened. The casting material placed into the space  27  seals the channel  29  along its guide surface  28  toward the base body  17  and the outer body  19 . The strip  26  can, for example, also extend helically over the length L of the barrel  02 , preferably in its outer area. A radial extension of the strip  26 , i.e. its height h 26  can be as great as the distance a 19  between the base body  17  and the outer body  19 , as seen in FIG.  6   a . However, the height h 26  of the strip  26  is preferably made shorter than the distance a 19  between the base body  17  and the outer body  19 , as seen in  FIG. 6   b , so that when the space  27  between the base body  17  and the outer body  19  is filled, the casting material forms a bottom on the surface  18  of the base body  17 . In both cases, the height h 26  of the strip  26  corresponds to the height h 26  of the channel  29 . When, in the course of the operation of the rotating body  01 , a temperature-control medium flows through the channel  29  formed by the removal of the removable strip  26 , the casting material forms a thermal insulating layer toward the base body  17  which thermal insulating layer is particularly effective if the channel  29  has a bottom toward the base body  17 . The temperature-control medium is thus active only toward the outer body  19 . The base body  17  remains protected against thermal effects. The casting material is used in this way as an insulating material. For achieving this insulative effect, a casting material with glass beads, preferably with hollow glass bodies, and in particular with hollow glass spheres, sprinkled in, is particularly advantageous. It is also advantageous to select an insulating material, for example, a synthetic resin, whose thermal coefficient of expansion corresponds, as closely as possible, to that of the material of the base body  17  and to the outer body  19  and therefore matches it. In the course of their assembly, the outer body  19  and the base body  17  are oriented concentrically in respect to each other. 
     In the above-described fourth embodiment, at least the barrel  02  of the rotating body  01  has a base body  17  with a cylindrical surface  18  and also has an outer body  19  surrounding the surface  18  of the base body  17 , as shown in  FIGS. 6   a  and  6   b . An inner diameter D 19  of the outer body  19  is greater than an outer diameter D 17  of the base body  17 . The rotating body  01  is distinguished in that a casting material, which preferably is an insulating material, and in particular is a castable insulating material, has been placed into a space  27  between the surface  18  of the base body  17  and the inside  24  of the outer body  19 , and the casting material, or the insulating material forms at least one channel  29  in the space  27 . It is advantageous if the inner diameter D 19  of the outer body  19  is between 5 mm and 30 mm greater, and in particular is 20 mm greater than the outer diameter D 17  of the base body  17 , and if the outer body  19  is concentrically arranged around the base body  17 . The channel  29  can also wind in a helical or other actuate shape around the base body  17 , preferably in the outer area of the barrel  02 . In a manner similar to the previously described preferred embodiments, a temperature-control medium can flow through the channel  29 . It is advantageous, in connection with the preferred use of the rotating body  01 , if the outer body  19  is embodied as a steel pipe and the base body  17  is forged. 
     As represented in  FIG. 7 , a fifth preferred embodiment of the present invention provides a rotating body  01  of a printing press, having a barrel  02 , and wherein a shaft  31 , with a diameter D 31 , and preferably passing through the barrel  02 , is arranged centered in the barrel  02 . The shaft  31  has a higher resistance against mechanical stress exerted on the rotating body  01  than does the barrel  02 , and preferably has a greater physical strength, in particular a higher endurance, and a higher breaking or flexing resistance, than the barrel  02 , and further wherein at least one channel  32  leading into the barrel  02  is provided in the shaft  31 . In particular, the shaft  31  consists of a high-strength material, with an appropriate modulus of elasticity for positioning in it a channel  32  extending to the inside of the barrel  02  and of a diameter D 32  and with channel  32  having as large as possible a cross-sectional surface A 32  in comparison with the cross-sectional surface A 31  of the shaft  31 , and without reducing the physical properties of the entire rotating body  01 , such as for example its endurance, or its breaking or flexing resistance. Since the physical properties of the material being used for the barrel  02 , such as, for example, an iron-containing or an aluminum-containing material, are not too great, it would not be possible to provide a channel  32  having a large cross-sectional surface A 32 , and for use in introducing as large as possible a volume flow of a temperature-control medium into a hub of the barrel  02  which is made of the same material as the remaining barrel  02 , without negatively affecting the physical properties of the rotating body  01 . The physical strength of the material used for the shaft  31  should permit the provision of a channel  32  with a large cross-sectional surface A 32  in it. An axial bore, with a diameter  32  of between 8 mm and 30 mm, for forming the channel  32 , can be advantageously cut into the shaft  31 , wherein the diameter D 32  of the channel is approximately 40% of the diameter D 31  of the shaft  31 . With this construction, the cross-sectional surface A 32  of the channel  32  can be approximately 20% or more of the cross-sectional surface A 31  of the shaft  31 . Despite the formation of such a channel  32  in the shaft  32 , the geometric dimensions of the shaft  32 , in comparison with conventional shafts  32 , should remain unchanged and should, in particular, not be increased. Instead, with constant mechanical stress, the increased physical strength of the shaft  32  compensates for its weakening that was caused because of the channel  32  having been cut into it. The channel  32  is formed on at least one end  33  of the shaft  31 , as seen in  FIG. 7 , and extends in the barrel  02 , for example, over only a portion of the length L of the barrel  02 . Advantageously, the shaft  31  itself extends as a component, which, with respect to its structure and its material, is formed homogeneously and as one piece, at least over the length L of the barrel  02 , wherein this length L, as previously mentioned, can reach up to 2400 mm. Moreover, the shaft  31  can be embodied, at its ends, with journals  22 ,  23  for seating and for connection with a drive mechanism for accomplishing the rotary movement of the rotating body  01 . A temperature-control medium, for controlling the temperature of the barrel  02 , is conducted through the channel  32  into the barrel  02 . A rotary lead-through can be connected with the shaft  31 , in particular with at least one of its journals  22 ,  23 . For controlling the temperature of the shell face  07  of the barrel  02  which, shell face  07  can for example, be covered with at least one dressing, the barrel  02  has at least one channel  29  extending underneath the shell face  07 . The channel  29  of the barrel  02  is connected with the channel  32  of the shaft  31  by at least one line that is extending substantially radially with respect to the barrel  02 , such as, for example a radial bore  34 , or by an annular groove  37 , as represented in  FIG. 2 . In a preferred embodiment, at least the barrel  02  is made of a casting material, wherein the channel  29  of the barrel  02  is enclosed, for example, by the cast material of the barrel  02 , or is structured in accordance with one of the previously described preferred embodiments of the rotary body  01 . Therefore, the barrel  02  can be made of, for example, a gray cast material, a cast steel or a cast aluminum, while the shaft  32  is made, for example, of a preferably alloyed or tempered steel, and in particular of a high-strength steel with an appropriate module of elasticity. The rotating body  01  is thus constructed using two components of preferably different material, with different physical properties and with melting points which are different from each other. The shaft  31  is introduced into the barrel  02 , by the use of a non-positive, material-to-material, or positive connection, and is connected with the barrel  02  in such a way that the channels  29 ,  32 , which are formed in the barrel  02  and in the shaft  31 , have a connection through which the temperature-control medium can flow. If the physical strength of the shaft  31  permits it, the shaft  31  can be cast in the barrel  02 . However, in the present preferred embodiment, the cast barrel  02  is attached to the shaft  31  by being shrunk onto it. Further possible joining techniques consist of gluing the shaft  31  into the barrel  02 , to clamp it by forming, or by the introduction of suitable assemblies such as, for example, wedges or a tongue-and-groove connection. In connection with a method for producing the rotating body  01 , wherein a shaft  31  with a channel  32  of a large cross-sectional surface A 32  is arranged centered in the barrel  02 , and wherein the shaft  31  is introduced into a barrel  02  which was produced by casting technology, after the barrel  02  has solidified, the danger of a thermal deformation of the shaft  31 , or at least of thermal stresses in the shaft  31 , which would otherwise exist, is avoided, in particular in connection with slim rotating bodies  01  of a relatively small diameter D 2  and therefore with a large axial length L, as previously mentioned. With this method, heating, and especially heat-soaking and softening of the shaft  31 , by the liquefied casting material of the barrel  02 , is prevented, since the shaft  31  is not embedded in the casting material of the barrel  02  liquefied by heat. Instead, the shaft  31  is introduced into the cast barrel  02  after it has solidified. This method contributes to the production, with great precision, of rotating bodies  01  with a shell face  07  which is to be temperature-controlled. 
     A method for the temperature-control of at least one barrel  02  of a rotating body  01  of a printing press, and in which at least the barrel  02  has at least one hollow body  03 ,  04 , or channel  14 ,  16 ,  21 ,  29 , with an inflow  08  and with an outflow  09  for the temperature-control medium, and through which a preferably liquid temperature-control medium flows at a constant flow volume, is provided. An amount of heat to be exchanged between the barrel  02  and the temperature-control medium in the hollow body  03 ,  04 , or in the channel  14 ,  16 ,  21 ,  29 , over a distance “s” between the inflow  08  and the outflow  09 , and wherein the distance “s” preferably corresponds to the length L of the barrel  02 , but corresponds at least to the length of the print-performing area on the shell face  07  of the barrel  02 , is maintained constant by the adjustment of a flow speed v 08 , v 09  of the temperature-control medium. In connection with this, an embodiment of the hollow body  03 ,  04 , or of the channel  14 ,  16 ,  21 ,  29  can be seen in  FIG. 8 . 
     With this above-described method, the flow speed v 08 , v 09  of the temperature-control medium can be adjusted wherein, for example, a cross-sectional area A 09  of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29  at the outflow  09  is changed, in comparison with a cross-sectional area A 08  of the hollow body  03 ,  04  or channel  14 ,  16 ,  21 ,  29  at the inflow  08 . Alternatively, the flow speed of the temperature-control medium can be adjusted wherein a depth t 09  of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29 , at the outflow  09 , is changed in comparison with the depth t 08  of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29  at the inflow  08 . To this end, it is provided that a contact surface A 07  of the temperature-control medium flowing through the hollow body  03 ,  04  or channel  14 ,  16 ,  21 ,  29  is kept constant. It is achieved, by these steps, that the heat exchange between the shell face  07  of the barrel  02  and the temperature-control medium remains constant. For example, in connection with a steadily warming temperature-control medium, because of the cooling of the contact surface A 07 , the flow speed v 09  at the outflow  09  is reduced, in comparison with the flow speed v 08  at the inflow  08 , so that the dwell time of the temperature-control medium at the contact surface A 07  is proportionally increased. On the other hand, it is also possible to maintain the flow speed v 08 , v 09  of the temperature-control medium constant over the distance “s” and to change the contact surface A 07  which the temperature-control medium has toward the shell face  07  of the barrel  02  by changing the geometry of the contact surface A 07  or its distance toward the shell face  07  of the barrel  02 . 
     In a sixth preferred embodiment of the present invention, the rotating body  01  of a printing press has a barrel  02 , wherein at least one hollow body  03 ,  04  or a channel  14 ,  16 ,  21 ,  29 , through which a temperature-control medium flows, and with an inflow  08  and an outflow  09  for the temperature-control medium, is at least located in the barrel  02 . An amount of heat in the hollow body  03 ,  04  or in a channel  14 ,  16 ,  21 ,  29 , which is to be exchanged between the barrel  02  and the temperature-control medium, over a distance “s” between the inflow  08  and the outflow  09 , is kept constant by an adjustment of a flow speed v 08 , v 09  of the temperature-control medium. In this case, the distance “s” advantageously corresponds to at least the print-performing area along the length L of the barrel  02 . 
     As described in connection with the present method, the flow speed v 08 , v 09  of the temperature-control medium can be adjusted. A cross-sectional surface A 09  of the hollow body  03 ,  04  or the channel  14 ,  16 ,  21 ,  29 , at the outflow  09 , for example, can be changed in comparison with a cross-sectional surface A 08  of the hollow body  03 ,  04  or the channel  14 ,  16 ,  21 ,  29  at the inflow  08 . Alternatively, the flow speed of the temperature-control medium can be adjusted. A depth t 09  of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29  at the outflow  09  can be changed, in comparison with the depth t 08  of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29  at the inflow  08 . With this rotating body  01 , a contact surface A 07  of the temperature-control medium flowing through the hollow body  03 ,  04  or through the channel  14 ,  16 ,  21 ,  29  and which is oriented toward the shell face  07  of the barrel  02  does not change. Also, the flow speed v 08 , v 09  of the temperature-control medium along the distance “s” can remain constant and the contact surface A 07  which the temperature-control medium has toward the shell face  07  of the barrel  02  can be changed between the inflow  08  and the outflow  09  in its geometry or in its distance from the shell face  07  of the barrel  02 . 
     This sixth preferred embodiment of the rotating body  01 , in accordance with the present invention, is particularly suited for configurations in which the inflow  08  and the outflow  09  of the temperature-control medium are arranged on the same end  11  of the barrel  02 . For example, the effect of this sixth preferred embodiment of the rotating body  01  can be achieved wherein an insert, which changes the cross section along the distance “s” in a desired way, can be introduced into a hollow body  03 ,  04  or into a channel  14 ,  16 ,  21 ,  29  of constant cross section, and wherein this insert can be embodied to be wedge-shaped, for example. If the insert for the hollow body  03 ,  04  or for the channel  14 ,  16 ,  21 ,  29  is embodied as a solid wedge, such as, for example, a rod whose cross section is embodied in a desired way, and in particular as a plastic rod, this wedge can be introduced with a material-to-material contact or with positive contact into the hollow body  03 ,  04  or channel  14 ,  16 ,  21 ,  29 , for example by gluing or by a press fit. Advantageously, the insert consists of an insulating material, and preferably of a castable insulating material, such as, for example, a synthetic resin with sprinkled-in hollow glass bodies, such as, for example, hollow glass spheres, which castable insulating material is preferably introduced into the hollow body  03 ,  04  or into channel  14 ,  16 ,  21 ,  29  by a casting process or by an injection-molding process, and which insulates the temperature-control medium against the base body  17  of the barrel  02  because of its thermal damping effect. In this embodiment, the insert at least partially lines the hollow body  03 ,  04  or the channel  14 ,  16 ,  21 ,  29  at its inner wall, i.e. at its wall facing the temperature-control medium. With a channel  14 ,  16 ,  21 ,  29  open toward the base body  17  arranged in the outer body  19 , the insert placed, for example, into the channel  14 ,  16 ,  21 ,  29  covers the channel  14 ,  16 ,  21 ,  29  toward the base body  17 . 
     The use of such an insert has as an advantage that the hollow body  03 ,  04  or the channel  14 ,  16 ,  21 ,  29  can be provided in the barrel  02  of the rotating body  01 , for example, by the use of a conventional pipe, and in particular by a steel pipe, or by drilling or machining. An effect on the flow behavior of the temperature-control medium takes place in a production step which is separated from the insertion of the hollow body  03 ,  04  or of the channel  14 ,  16 ,  21 ,  29  into the barrel  02 . Moreover, it is possible, by the use of an insert into the hollow body  03 ,  04  or into the channel  14 ,  16 ,  21 ,  29  to achieve, in a simple manner, a thermal insulation of the temperature-control medium against the base body  17 . 
     A further method, in accordance with the present invention, for producing a rotating body  01  with a thermally insulated base body  17 , as well as a rotating body  01  which is produced in accordance therewith, will now be explained by reference to  FIGS. 9 to 11 . A cylindrical sleeve  38  is pushed onto the preferably closed cylindrical surface  18  of the base body  17  and extending over the axial length of the rotating body  01 . The sleeve  38  has formed along its outer circumference several hollow spaces  21  in the form of, for example, grooves  21  which are extending axially with respect to the base body  17 . Every groove  21  can preferably be used as a flow channel  21 . Preferably, several sleeves  38 , each preferably of the same axial width, have been lined up over the axial length of the rotating body  01 , for example by pushing them on the rotating body  01 . All of the grooves  21 , located at the outside circumference of all of the sleeves  38  fit or align with each other to form a continuous flow channel  21  that is extending over the axial length of the rotating body  01 . However, the sleeves  38  can also be produced with different axial widths, for example, so that sleeves  38  of different axial widths can fit to form almost any arbitrary axial length of the rotating body  01 . 
     A channel-like inflow  08 , for use in introducing the heat-carrying medium into the rotating body  01 , is provided at least one first end  11  of the rotating body, or at an end  33  of a shaft  31  and continues extending through the rotating body  01 . The heat-conducting medium is conducted, for example, in the interior of the shaft  31 , through the rotating body  01 , to a location which is close to the second, opposite end  11  of the rotating body  01 . By flowing through preferably several radial bores  34 , the heat-conducting medium is then conducted from the interior of shaft  31  to the openings of the grooves  21  of the sleeve  38  which, sleeve  38  in the axial direction of the rotating body  01 , is the outermost one. This heat-conducting medium is introduced into the flow channels  21 , which are embodied as grooves  21 , after which the heat-conducting medium flows through the grooves  21  back in the direction of the first end  11  of the rotating body  01  at which end  11  of the rotating body  01  the heat-conducting material had been introduced into the rotating body  01 . The heat-conducting medium exiting from the end openings of the grooves  21  of the sleeve  38  which, in the axial direction of the rotating body  01 , is the last can be conducted by radial bores  34  to a channel-like outflow  09  for the collective removal of the heat-conducting medium from the rotating body  01 . 
     In this preferred embodiment, all of the sleeves  38  are preferably made of a plastic material, typically in an injection-molding process, and are made, for example, of polyamide. The sleeves  38  are preferably made of a thermally insulating material. The grooves  21 , which are formed in the outside of the sleeve  38 , are preferably formed in the course of injection-molding the sleeve  38 . These grooves  21  can also be cut into the outer surface of the sleeve  38  by milling or by a similar process. 
     Following the placement of the sleeves  38 , which are preferably required for the entire axial length of the rotating body  01 , onto the base body  17 , and the alignment of their respective grooves  21 , for forming the resultant continuous flow channels  21 , the sleeves  38  are fixed in place on the base body  17 , preferably by the use of a material-to-material connection, such as for example, by gluing, and are thereby fastened in place. Thereafter, an outer body  19 , which may be, for example, embodied as a cylindrical pipe, is placed on the lined-up sleeves  38  in such a way that the grooves  21  cut into the sleeves  38  are covered. Strips or ridges  39 , which are formed between the individual grooves  21 , prevent leaks in which the heat-conducting medium flowing through the flow channels  21  would leak from one groove  21  into a neighboring groove  21  in an uncontrolled manner. The preferably thin-walled outer body  19  is pushed onto the sleeves  38 , typically with a positive connection, and is fastened to the sleeves  38 , or to the base body  17 , or to both, preferably in a material-to-material connection, such as, for example, by welding or gluing. With this construction, at least one cylindrical sleeve  38 , made of a thermally insulating material, has been placed into the space  27  between the surface  18  of the base body  17  and the inside  24  of the outer body  19 . The outer body  19  preferably is made of a corrosion-proof and wear-resistant metallic material. 
     While preferred embodiments of rotating bodies of a printing press comprising a barrel, in accordance with the present invention, have been set forth fully and completely hereinabove, it will be apparent to one of skill in the art that changes in, for example, the source of supply of the heat-conducting material, the overall arrangement of the printing press, and the like could be made without departing from the true spirit and scope of the present invention which is to be limited only by the appended claims.