| Title of Invention | PRINTING MACHINE |
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| Abstract | The printing units of the printing machine disclosed herein, in particular a label printing machine or a sheet-fed offset printing press. are received in a machine support structure that is made at least partially and preferably entirely of rock. The rock may be a natural rock. in particular granite, or an artificial rock. in particular concrete. |
| Full Text | Printing Machine The invention relates io a printing machine, in particular for printing labels, including a machine support structure that comprises a support element, and at least one printing unit at least part of which is received in the support element by means of a bearing element. For many years printing machines and individual components used in printing machines have on a large scale been made of metallic materials, in particular of steels, aluminum, or titanium. Apart from the fact that these materials meet the requirements in terms of some of their physical and technical characteristics, the fact that these materials have become widely used is. among other factors, obviously due to the easy availability of both qualitative skills and quantitative capacities in terms of the production and adequate processing of metallic materials. In printing machines that operate in accordance with the latest printing technology the machine support structure usually consists of large casts of metallic materials. To be molded into the desired shape, these casts require technically complex and frequently expensive processing. The use of metallic materials in modern printing technology generally requires auxiliary technical measures in order to counteract certain undesirable physical properties of these materials such as electric conductivity, thermal expansion, mechanical vibration behavior, or consequences of these properties. One of the largest and commercially most important sectors that use modern printing technology is the production of labels. The document WO 2005/028202 A1, for example, discloses a label printing machine with individual drives for individual in-line printing units. In the printing machine, a web of printing material is processed to produce multicolor labels fmished with special effects as desired. The printing processes employed in the label printing machine may vary in accordance with the print job so that different formats can be processed and different processes can be employed to meet a wide range of product requirements. For this purpose, the label printing machine has a number of disconnection points where printing units or printing unit parts that use different printing processes, in particular flexographic printing, gravure, offset printing, and screen printing, can be connected and disconnected. When a printing unit or a printing unit part is connected at a disconnection po. it. a drive connection to an individual drive for the printing unit or printing unit part is simultaneously established. The label printing machine described in WO 2005/028202 Al is manufactured in a conventional way from metallic casts. It is an object of the present invention to provide a stable printing machine that reduces or avoids negative consequences of undesirable properties of metallic materials. In accordance with the invention, this object is attained by a printing machine that has the features set forth in Claim I. Advantageous developments of the invention are characterized in the dependent claims. A printing machine according to the invention, in particular for printing and/or producing labels includes a machine support structure with a support element that is at least partially made of rock, and includes at least one printing unit at least part of which is received in the support element by means of a bearing element. In connection with the invention, the term "rock' as it is used in the present description is understood to mean a solid mineral mass or a single object consisting of a material of this type. In the context of the present description, the term "rock" as it is used herein is understood to be synonymous with the term "stone". The rock may be natural or artificial. Natural rock is a solid mineral mass created in the course of geology, part of the inorganic components of the earth's crust or an individual object made of this material. Natural rock may be created by solidification of molten minerals (basalt, granite, volcanic rock) or by solidification of loose materials (sandstone, limestone). Artificial rocks are produced in technical processes. The support element is made of rock, in particular of one rock or several rocks, preferably entirely of rock. Large parts of the machine support structure or the entire machine support structure in particular may be made of stone. It is preferred that the entire printing unit is received in the support element. The bearing element may be connected to the support element so as to be releasable or non-releasable. The bearing element may in particular be a bushing or a hinge bearing or a pivot bearing or a grooved rail made of a metallic material. The bearing element ma\ be fixed to the rock support element by adhesi\ e bonding or screwing and may in particular be glued in or screwed in. The bearing element may also be an insert in the support element. The bearing element may be part of the printing unit or part of the machine support structure. If it is part of the printing unit, it may be a component of the printing unit, in particular a shaft, or a subassembly of the printing unit. The printing unit may be used to apply ink, varnish, clear varnish, or a substrate such as foil, a hologram, or a RFID circuit to a printing substrate. A printing unit may in particular comprise an inking unit and/or a dampening unit. Further parts of the printing press may be received in the support element directly, without a bearing element, or indirectly, by means of a bearing element. For example control components and/or drive components and/or processing devices such as dryers or cutting units in particular may be fixed to the support element. The support structure may also be referred to as a frame construction, a machine structure, or a support construction. The printing machine is preferably a rotary printing press. The machine support structure, in particular the support element, is part of the printing press and not part of the surroundings in which the printing machine is placed. The support element is not to be considered as separate or independent of the printing press. In particular, the support element is not a support surface, a platform, a support element,'a shop floor, a print shop foundation, a floor plate, or an intermediate platform for a printing machine. In other words, the printing unit or printing units are received in the support element rather than on the support element as part of a printing press. The present invention advantageously provides a printing press that is inherently stable even under changing thermal conditions. The coefficient of expansion of rock is considerably lower than that of metals. The support element of the printing press according to the invention is inherently stable also in terms of mechanical forces acting on the support element. In particular, it is more rigid or more stable than the metal materials that are commonly used. moreover. rock has better vibration damping properties than the metal materials that are commonly used, Finally; rock is also an electric insulator, a fact which means thai no corrosion occurs. Rock as a raw material can be processed with high precision, so that a very precise geometry of the suppoit element and thus a support element of high quality can be achieved, The printing machine according to the invention even has commercia! advantages because complex and expensive surface treatments for protective and/or aesthetic reasons, for example coatings or paint are no longer required. Production costs for comparable components made of metal materials may actually be considerably higher than those for components made of rock because processing, measuring, testing and assembling of components made of metal materials may be more complicated. In the printing machine according to the invention the support element made of rock may provide a major part or all of the bearing forces required for positioning the at least one part of the printing unit in space and/or the compensation force for the gravitational force acting on the part of the printing unit. In other words, the support element is primarily used for mounting or fixing the printing unit of the printing machine according to the invention. In some embodiments of the printing machine according to the invention, a plurality of printing units may be received in the support element. In addition or as an alternative, the machine support structure may include a plurality of support elements that are made of rock. The support element(s) may be made of one piece, i.e. they may be a monoblock or monolith. The one piece (also referred to as a single piece) may be erected to be vertical, like a wall, in particular a side wall of a printing machine. In these embodiments, the one-piece rock is used to receive all printing units in an in-line arrangement, in particular in the horizontal direction. In such an embodiment, table blocks and/or cross pieces may advantageously be dispensed with. This may save costs, in particular production costs, and simplify transportation. At the most, the one-piece rock may rest on separate feet, base profiles, or the like. It should be noted that the different expansion propenies of metallic and mineral materials do not pose a problem in the one-piece construction because in the longitudinal direction. onl\' mineral materials are provided, whereas the metallic components extend perpendicular to the one-piece rock. Due to the lack of metal connections in the longitudinal direction, undesirable length changes or expansions are avoided. The support element made of rock of the printing machine according to the invention may in particular be a base frame, a machine frame, a machine foundation, a base plate, a base unit, a printing unit frame, a printing unit support, a side part, a side wall a side frame, a support frame, a portal support, or a connecting profile. ■ In a first group of embodiments of the printing machine according to the invention, the rock is a natural rock. In other words, the support element may be made of a type of rock found in nature. This natural type of rock may in particular be an extrusive rock, an intrusive rock, a dike rock, an eruptive rock, or a metamorphic rock. The natural stone is preferred to be granite, granite-like, granite porphyry, gneiss, or marble. In particularly advantageous embodiments, the natural stone is black granite, gabbro, or impala granite. The most preferred rock is impala granite. The expansion coefficient of impala granite is only one fifth of that of cast steel. In a second group of embodiments of the printing machine according to the invention the rock is an artificial rock. This artificial rock may in particular be concrete or a ceramic. A particularly advantageous type of concrete has a tensile strength of more than 200 N/cin" and has a homogenous structure. The concrete may be armed concrete. With reference to artificial rock, an embodiment in the shape of a single piece is preferred. Such an embodiment can be implemented in a simple and cost-effective way using artificial rock. In some embodiments, in paticular of ihe first or second group, the support element ma\' be a composite component or composite workpiece made of rock, and at least one further materiak In particular, the further material may be a plastic with a honeycomb structure. In this \Na>- an advantageous reduction of the weight of the component may be attained while maintaining certain properties in terms of solidity and slabilitN. In particular in an embodiment of the first group, the printing machine according to the invention may be a web-processing printing machine, in particular for label printing. The web-processing printing machine may include a wind-up device for the printed web of printing material. The printing machine ma>' be a narrow-web printing machine. The width of the web of material may be less than 550 mm, in particular less than 340 mm. even less than 285 mm. In particular in an embodiment of the second group, the printing machine according to the invention may alternatively be a sheet-processing printing machine. A sheet-processing printing machine may include a feeder, a number of printing units (typically 4, 6, 8, 10, or 12 printing units, in particular offset printing units), and a delivery. The sheet-processing printing machine may be a perfecting machine (reversing machine), i.e. a printing machine for printing both sides of a printing material in one pass. In a preferred embodiment, the printing machine is a label printing machine. The printing machine may be suitable for producing adhesive labels. The label printing machine may in particular include individual features and combinations of features as disclosed in the document WO 2005/028202 Al. The document WO 2005/02&202 Al is explicitly included by reference herein. The printing machine may be an offset printing press or may include at least one offset printing unit, possibly in combination with a number of other printing units operating in accordance with different printing processes (hybrid printing machine). A preferred embodiment of the printing machine according to the invention. in particular a label printing machine, includes a plurality of printing units (some or all ofj which operate according ro mutually different printing processes. The different printing processes may be one or more of the following printing processes: flexographic printing, gravure. letterpress printing, relief printing, direct or indirect planographic printing, lithographic printing, offset printing, waterless offset printing, coldfoit stamping, hotfoil stamping, ink jet printing, liquid toner printing, screen printing, xerography. It is particularly advantageous if the printing machine, in particular a label printing machine, can be converted to different printing processes by removing a printing unit printing according to a first printing process partly or in total from the remainder of the printing machine at a disconnection point where, if necessary, the remaining part of the printing unit may also be removed, and by replacing it partly or in total by a printing unit to be received at the disconnection point and printing according to a second printing process. The printing machine according to the invention may include individual ones of the features given above or a combination of them, in addition or as an alternative to the features mentioned above, the printing machine according to the invention may include individual ones or combinations of the following features: the printing length and/or the printing width of the printing machine may be variable. The printing machine may include a modular structure for a plurality of printing units. Each of the plurality of printing units of the printing machine according to the invention may include a support structure with at least one support element made of rock. The printing units of the printing machine according to the invention may be arranged in line in a substantially horizontal direction. The printing units may be driven separately by individual drives. Further advantages and advantageous embodiments and developments of the invention will be explained below in the following description with reference to the appended figures. which include the following: figure 1 illustrating a machine suppon strucrure consisting oi support elements made of rock in accordance w ith a preferred embodiment of a printing machine according to the invention. Figure 2 illustrating a drive side view of the embodiment shown in Figure 1. Figure 3 illustrating a front view of the embodiment shown in Figure 1, Figure 4 illustrating a side view of the embodiment shown in Figure ], Figure 5 illustrating a preferred embodiment of a printing machine according to the invention with a machine support structure as shown in Figure 1, Figure 6 illustrating a front view of the label printing machine shown in Figure 5, and Figure 7 illustrating a diagrammatic representation of an alternative embodiment of a printing machine according to the invention. Figure 1 illustrates an operator-side view of a machine support structure 12 that is made of support elements made of rock In accordance with a preferred embodiment of a printing machine 10 according to the invention (also refer to Figure 5). This embodiment belongs to the first group of embodiments, which use natural stone. The machine support structure 12 includes a support element 14 made of rock and also referred to as a portal support. The support element 14 serves for receiving printing units (in the given example, there are four printing units for standard four-color printing) and other components, in particular web-guiding rollers. For this purpose, the support element 14 includes a number of shaft bores 16 arranged in groups for the individual printing units and roller bores 18. The printing units 30 are arranged in line in the horizontal direction. The support element 14 rests on the frame of the machine support structure 12, In this embodiment, the main component of this frame of the machine support structure 12 is likewise made of rock. The frame includes a left-hand side wall 20, a right-hand side wall 22, and two connecting profiles 24. In the preferred embodiment, the rock is impala granite, The machine support structure 12 rests on adjustable feet 26. hi the view shown in Figure 1. a cable duct 28 can be seen behind the support element 14. The cable duct 28 is a further connecting profile of the machine support structure 12. Figure 2 is a view of the dri\'e side of the embodinient of the machine support structure 12 shown in Figure I. On this side, separate drive units for each of the printing units 30 (refer to Figure 5) are attached to the support element 14. The drive shafts of the printing units 30 pass through the shaft bores 16 in which they are received by means of bearing elements (roller bearings in the present example) and are supported to be capable of rotating. Tools for the printing process according to which the printing unit operates may be attached to each of the shaft journals. Figure 2 also illustrates the left-hand side wall 20, the right-hand side wall 22, the connecting profiles 24, the adjustment feet 26, and the cable duct 28. The web-guiding rollers that are received in the roller bores 18 so as to be capable of rotating are not driven. Figure 3 shows a front view of the embodiment of the printing machine 10 according to the invention as shown in Figure I. The support element 14 with the shaft bores 16 and roller bores 18 is connected to the left-hand and right-hand side walls 20, 22 by means of elbows 32. Together with the connecting profiles 24, a stable frame for the machine support structure 12 is formed. Figure 4 shows a right-hand side view of the machine support structure 12 of the printing machine 10 according to the invention. The support element 14 and the right-hand side wall 22, which rests on adjustment feet 26, are visible of the machine support structure 12. The connecting profiles are received in recesses 34 of the right-hand side wall 22. The cable duct 28 has a U-shaped profile. Figure 5 shows a preferred embodiment of a printing machine 10 according to the invention and including a machine support structure 12 as shown in Figure 1. In this embodiment, the printing machine is a web-processing printing machine, a label printing machine, The elements and components that are made of rock in a label printing machine are preferably made of natural rock, in particular granite. The machine support strucrure 12 with the components support element 14. left-hand side wail 20, right-hand side wall 22. and conn cting profiles 24. which have already been described with reference to Figures 1 to 4, form a support for a processing pan. or printing pait of the printing machine 1 0. in which a non-ilkistrated web of printing material (a substrate) is processed as it passes through the machine on its web path, guided by web-guiding rollers 36. The processing pan includes four printing units 30 that are received on the support element 14. The printing units 30 of the embodiment shown in the Figure can process varying formats, in particular it is possible to generate variable printing lengths by using cylinders of varying circumferential lengths. In addition, the printing units are convertible to different printing processes. In particular, it is possible to convert the printing units from flexographic printing to gravure and vice versa by simple remodeling of components of the printing units. Even screen printing is possible by simple conversion. It is also possible to replace an entire printing unit 30 by a diecutting unit or a stamping unit, in particular a hotfoil stamping unit, in this case, the diecutting unit or stamping unit is operated by the separate drive of the printing unit 30 that has been replaced as it has been descried with reference to Figure 2. Upstream of the processing part, there is a machine inlet part 38, which includes a first support wall 40 made of rock. Downstream of the processing part there is a machine outlet part 42, which includes a second support wall 44 made of rock. A substantial function of the machine inlet part 38 is to unwind a web of printing material that is to be printed and is located on a reel. For this purpose, an unwinding device 46 is provided. In addition, the machine inlet part 38 includes a discharge device 48. The rriachine outlet part 42 comprises a wind'up device 50 for winding up the processed (in particular printed) web of printing material onto a reel. To produce labels, it is not only necessary to print the substrate, but also to cut out the individual labels. For this purpose, the printing machine includes a cutting device 52 in whose nip labels are cut from the carrier web of the substrate and are separated from the web of grid-shaped cutting waste. This web of cutting waste is then wound up onto a reel in a wind-up unit 54, which includes a support wall 56 made of rock and a winding shaft 58, Figure 6 is a front view of the preferred embodiment of the printing machine 10 shown in Figure 5, i.e. of the label printing machine with support elements made of natural rock. For an explanation of the reference numerals shown in the Figure, please refer to the two previous paragraphs of the present description, Figure 7 schematically shows a view of an alternative embodiment of a printing press 10 according to the invention. In this embodiment, the printing machine is a sheet-fed offset printing press of in-line construction for four-color printing. The printing press is of modular construction and comprises a feeder 60, four printing units 30, and a delivery 62. Individual sheets are taken from a feeder pile 64 and are fed to the printing press 10 to be processed. Once they have been dried, the sheets are deposited on a delivery pile 66 in the delivery. According to the invention, the side walls 68 of the printing units 30 and corresponding components of the support structure of the printing units 30 as the support elements 14 are made of rock. For embodiments of sheet-processing printing presses according to the invention, the use of artificial rock, in particular concrete, is preferred, because artificial rock can be given the shape suitable for the application when it is produced in a technical process. Moreover, compared to embodiments of the printing machine according to the invention as a label printing machine, a sheet-fed printing press requires a large number of bores, recesses, protrusions, and the like in the side walls 68, which are easier to produce in artificial rock, in particular in concrete, than in natural rock. The support structures of the feeder 60 and the delivery 62 may also be made of rock, in particular of artificial rock, preferably of concrete. Individual functional components of the printing press, in particular the components of the printing units, however, may be made of metallic materials. To counteract the different thermal expansion behaviors of the materials that have been used, the printing machine according to the invention, in this embodiment a sheet-processing offset printing press, includes devices for mechanical compensation adjustment of components of the printing units so that the desired position of the components relative to each other as a function of the temperature \s attained automatically and with a high degree of precision. LIST OF REFERENCE NUMERALS 10 printing machine 12 machine support structure 14 support element 16 shaft bore 18 roller bore 20 left-hand side wall 22 right-hand side wall 24 connecting profile 26 adjustment feet 28 cable duct 30 printing unit 32 elbow 34 recess 36 web-guiding rollers 38 machine inlet part 40 first support wall 42 machine outlet part 44 second support wall 46 unwinding device 48 discharge device 50 wind-up device 52 cutting device 54 wind-up unit 56 support wall 58 wind-up shaft 60 feeder 62 delivery 64 feeder pile 66 delivery pile 68 side wall WHAT IS CLAIMED IS 1. A printing machine (10) comprising a machine support structure (12) with a support element (14). and at least one printing unit (30) at least part of which is received in the support element (14) by means of a bearing element wherein the support element (14) is at least partially made of rock. 2. The printing machine (10) as set forth in Claim 1 wherein the support element (14) made of rock provides the bearing forces required for positioning the at least one part of the printing unit (30) in space and/or the compensation force for the gravitational force acting on the part. 3. The printing machine (10) as set forth in Claim 1 or 2 comprising a plurality of printing units (30) received in the support element (14). 4. The printing machine (10) as set forth in any one of the preceding claims wherein the machine support structure (12) includes a plurality of support elements (14) that are made of rock. 5. The printing machine (10) according to any one of the preceding claims wherein the support element (14) is one of the following: a base frame, a machine frame, a machine foundation, a base plate, a base unit, a printing unit frame, a printing unit support, a side part, a side wall, a side frame, a support frame, a portal support, or a connecting profile (24), 6. The printing machine (10) as set forth in any one of the preceding Claims 1 to 4 wherein the support element is made of a one-piece rock. 7\ The printing machine (10) as set forth in any one of the preceding claims wherein the rock is a natural rock. S. The printing machine (10) as set forth in Claim 7 wherein the natural stone is an extrusive rock, an intrusive rock, a dike rock, an eruptive rock, or a metamorphic rock. 9. The printing machine (10) as set forth in Claim 7 wherein the natural rock is granite, a granite-like rock, a granite porphyry, gneiss, or marble. 10. The printing machine (10) as set forth in Claim 7 wherein the natural rock is black granite, gabbros, or impala granite. 11. The printing machine (10) as set forth in any one of Claims 1 to 6 wherein the rock is an artificial rock. 12. The printing machine (10) as set forth in Claim 11 wherein the artificial rock is concrete or ceramic. 13. The printing machine (10) as set forth in any one of Claims 1 to 6 wherein the support element (14) is a composite work piece made of rock and at least one further material. 14. The printing machine (10) as set forth in Claim 13 wherein the further material is a plastic with a honeycomb structure. 15. The printing machine (10) as set forth in one of the preceding claims wherein the printing machine (10) is a sheet-processing printing machine. 16. The printing machine (10) as set forth in anyone of claims 1 to 14 wherein the printing machine (10) is a web-processing printing machine. !7. The printing machine as set forth in Claim 16 wherein the web-processing printing machine includes a wind-up de\ice (50') for the printed web of printing material. 18. The printing machine (10) as set forth in any one of the preceding claims wherein the printing machine (10) is a label printing machine. 19. The printing machine (10) as set forth in any one of the preceding claims wherein the printing machine is an offset printing press or includes at least one offset printing unit. 20. The printing machine (10) as set forth in any one of claims 1 to 19 comprising a plurality of printing units (30) that operate according to mutually different printing processes. 21. The printing machine (10) as set forth in Claim 20 wherein the different printing processes include one or more of the following printing processes: flexographic printing, gravure, letterpress printing, relief printing, direct or indirect planographic printing, lithographic printing, offset printing, waterless offset printing, coldfoil stamping, hotfoil stamping, ink jet printing, liquid toner printing, screen printing, xerographic printing. 22. The printing machine (10) as set forth in any one of the preceding claims wherein the printing machine (10) is convertible between different printing processes by removing a printing unit operating according to a first printing process in part or in total at a point of disconnection from the remainder of the printing machine (10) and replacing it in part or in total by a printing unit (30) that operates according to a second printing process and is to be received at the disconnection point. 23. The printing machine (10) as set forth in any one of the preceding claims wherein the printing length and/or the printing width of the printing machine (10) are variable. 24. The printing machine as set forth in any one of the preceding claims wherein the printing machine (10) has a modular structure for a plurality of printing units (SO). 25. The printing machine (10) as set forth in claim 24 wherein each of the plurality of printing units (30) includes a support structure (12) with at least one support element (14) made of rock. 26. The printing machine (10) as set forth in any one of the preceding claims wherein the printing units (30) of the printing machine (!0) are arranged in line in a substantially horizontal direction. 27. The printing machine (10) as set forth in any one of the preceding claims wherein the printing units (30) are driven separately by individual drives. |
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| Patent Number | 272641 | ||||||||
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| Indian Patent Application Number | 2047/CHE/2007 | ||||||||
| PG Journal Number | 17/2016 | ||||||||
| Publication Date | 22-Apr-2016 | ||||||||
| Grant Date | 13-Apr-2016 | ||||||||
| Date of Filing | 12-Sep-2007 | ||||||||
| Name of Patentee | GALLUS DRUCKMASCHINEN GMBH | ||||||||
| Applicant Address | STEINBRUCHSTRASSE 5, 35428 LANGGONS-OBERKLEEN, | ||||||||
Inventors:
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| PCT International Classification Number | B 41 F 1/00 | ||||||||
| PCT International Application Number | N/A | ||||||||
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PCT Conventions:
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