Temperature-control roller assembly

Abstract

The invention relates to a temperature-control roller assembly comprising a temperature-control roller (2) for controlling the temperature of a moving material web (42). The temperature-control roller (2) has a roller body (6), a first roller journal (7) which is connected to the roller body (6), and a second roller journal (8) for mounting the roller body (6), at least one temperature-control fluid inlet (15) for a temperature-control fluid at a first end of the temperature-control roller (2), and at least one temperature-control fluid outlet (21) for the temperature-control fluid at a second end of the temperature-control roller (2), opposite the first end, which temperature-control fluid outlet is in fluid connection with the at least one temperature-control fluid inlet (15). The temperature-control roller assembly also comprises a rotary drive (3) for rotatingly drive the temperature-control roller (2), which rotary drive is drivingly connected to the temperature-control roller (2) and has a rotor (22), .

Description

[0001] Tempering roller arrangement

[0002] This patent application claims priority from German patent application DE 10 2022 211 429.9, the contents of which are incorporated herein by reference.

[0003] The invention relates to a tempering roller arrangement for tempering a moving material web. Furthermore, the invention is directed to a printing system with at least one such tempering roller arrangement.

[0004] Tempering roller arrangements are well known through prior public use. A tempering fluid is generally introduced into the rollers from one side and discharged from the same side. The tempering performance of such rollers is limited, which is a disadvantage.

[0005] The invention is based on the object of eliminating the disadvantages of the prior art. The aim is to create a tempering roller assembly that is particularly powerful in operation, i.e., has an extremely high tempering capacity. Furthermore, the tempering roller assembly is to be particularly economical in operation. A corresponding printing system is also to be supplied.

[0006] This object is achieved according to the invention by the features specified in the main claims 1 and 15. The core of the invention lies in the arrangement of the at least one tempering fluid inlet and tempering fluid outlet on opposite sides of the tempering roller, which allows a particularly high tempering fluid flow in the tempering roller during operation and thus, depending on the design or use of the tempering roller arrangement, enables extremely high energy dissipation from the material web or energy supply to the material web. The at least one tempering fluid inlet and tempering fluid outlet are preferably arranged at a distance from one another and advantageously face away from one another. It is advantageous if they are each arranged at the end with respect to the tempering roller.

[0007] The tempering roller arrangement is designed, for example, as a cooling roller arrangement for cooling the material web. Alternatively, it is designed, for example, as a heating roller arrangement for heating the material web.

[0008] The temperature control fluid is, for example, a liquid and / or a gas. Preferably, the temperature control fluid is water or contains water.

[0009] It is advantageous if the material web is made of paper or cardboard. It can be single-layer or multi-layer. The material web is preferably conveyed during operation, especially continuously. It can be, for example, a printing web, a printed web, or a printable web. It is advantageous if it is a corrugated board web or if a corrugated board (web) can be produced from it.

[0010] Advantageously, the tempering roller is in direct, particularly planar, contact with the material web during operation or during tempering, particularly by means of a heat-conducting connection. The tempering roller preferably extends perpendicularly or obliquely to the material web and preferably rotates during operation. It is advantageous if the tempering roller has a direction of rotation during operation and moves adjacent to the material web in a tangential direction that corresponds to a transport direction of the material web. Advantageously, the tempering roller has a tangential speed that is identical to the transport speed of the material web.

[0011] The roller body preferably comprises a roller shell. It preferably has a degressive pitch. It is advantageous if the roller shell has a constant outer diameter and / or constant inner diameter. It preferably has a width that is greater than the width of the material web. It is preferably designed as a hollow cylinder. It is expedient if two end parts or side parts are connected to the roller shell at the end and extend opposite one another. The end parts are advantageously spaced apart and parallel to one another. For example, the roller shell and the end parts are connected to one another in one piece. Alternatively, they are originally designed separately. It is expedient if the tempering roller is designed as a double-shell roller.

[0012] The roll necks preferably form a bearing axis, preferably a horizontal one. The roll necks and the roll body are connected to each other as a single piece, for example. Alternatively, they are originally designed separately.

[0013] The flow connection between the at least one temperature control fluid inlet and outlet is formed, for example, by at least one temperature control fluid channel, line, interior space, or the like of the temperature control roller. The at least one temperature control fluid inlet and outlet are, for example, in indirect flow connection with each other.

[0014] It is advantageous if the rotary drive is designed as an electric rotary drive and is capable of converting electrical power into a rotary or rotating motion. It is preferably gearless. Due to the rotary drive of the tempering roller, the tempering roller preferably acts as a material web transport roller during operation. The tempering roller is advantageously capable of transporting or moving the material web. It preferably allows guidance of the material web. For example, it is capable of redirecting or deflecting the material web.

[0015] The printing system is, for example, part of a corrugated board production line. Alternatively, it is installed upstream of a corrugated board production line. The printing system is preferably designed as a digital printing system and capable of printing the material web.

[0016] Further advantageous embodiments of the invention are specified in the subclaims.

[0017] The at least one temperature control fluid inlet channel according to dependent claim 2 preferably runs straight in the first roll neck, which is advantageous in terms of flow and allows a particularly large temperature control fluid flow. Pressure losses are comparatively small. It is preferably closed circumferentially and advantageously circular in cross-section. A transverse dimension of the at least one temperature control fluid inlet channel is preferably constant. It is expedient if the at least one temperature control fluid inlet channel extends centrally axially in the first roll neck. Preferably, only a single temperature control fluid inlet channel is present. A diameter of the temperature control fluid inlet channel is preferably between 30% and 80% of an outer diameter of the first shaft neck. The first roll neck is preferably (substantially) hollow-cylindrical.

[0018] The at least one temperature control fluid outlet channel according to dependent claim 3 preferably runs straight in the second roll neck, which is advantageous in terms of flow and allows a particularly large temperature control fluid flow. Pressure losses are comparatively small. It is preferably closed circumferentially and advantageously circular in cross-section. A transverse dimension of the at least one temperature control fluid outlet channel is preferably constant. It is expedient if the at least one temperature control fluid outlet channel extends centrally axially in the second roll neck. Preferably, only a single temperature control fluid outlet channel is present. A diameter of the temperature control fluid outlet channel is preferably between 30% and 80% of an outer diameter of the second shaft neck. The second roll neck is preferably (substantially) hollow-cylindrical.

[0019] According to subclaim 4, the rotary drive is designed as a hollow shaft drive. For example, a hollow shaft of the hollow shaft drive forms the rotor. The rotary drive is preferably directly connected to the tempering roller.

[0020] The configuration according to subclaim 5 results in a rotary drive that leaves the tempering fluid flow in the adjacent roll neck unaffected. The rotary drive thus does not obstruct, as is the case with prior art tempering roller arrangements, and does not hinder or restrict the flow of the tempering fluid. It is expedient if the rotor is arranged directly on the first or second roll neck and is connected thereto in a rotationally fixed manner to drive the tempering roller in rotation. The tempering roller can advantageously be driven directly in rotation. The rotary drive is preferably a direct drive. The rotor and stator are each (essentially) hollow cylindrical. The rotor is preferably designed as an internal rotor. It is expedient if it comprises a plurality of rotor laminations, in particular made of sheet metal. The stator advantageously has a permanent magnet arrangement and / or electromagnet arrangement.It is preferably capable of generating a magnetic field during operation that detects and acts on the rotor. During operation, the temperature control fluid flows through the rotary drive, in particular its rotor and stator, and is preferably capable of controlling its temperature. This is especially the case when the temperature control fluid is a cooling fluid.

[0021] The angle of rotation sensor according to subclaim 6 is preferably capable of converting a mechanical angular position of the rotor or the tempering roller into a corresponding electrical signal. The angle of rotation sensor can preferably be precisely adjusted or actuated, in particular controlled, by means of the angle of rotation sensor. It is advantageous if the angle of rotation sensor is designed as an inductive or potentiometric or optically operating / scanning angle of rotation sensor. It is expedient if the angle of rotation sensor is modular. It is advantageously scalable and / or adjustable. The angle of rotation sensor is preferably encapsulated with (air) overpressure relative to the environment, particularly to protect it from dirt.

[0022] The angle of rotation sensor according to subclaim 7 allows for particularly precise and exact adjustment or control of the tempering roller. In particular, the angle of rotation sensor is arranged adjacent to the roller body, i.e., a load. It is located on the load side relative to the rotary drive.

[0023] The statements regarding subclaim 7 also apply essentially analogously to subclaim 8.

[0024] The angle sensor according to subclaim 9 is preferably annular and surrounds the roll neck supporting the rotary drive. During operation, the temperature control fluid flows through the angle sensor and is preferably capable of controlling its temperature. This is especially the case when the temperature control fluid is a cooling fluid.

[0025] The bearing arrangement according to subclaim 10 is preferably designed as a rolling bearing arrangement, in particular a ball bearing arrangement, and comprises at least one bearing. It advantageously rotates around the roll neck supporting the rotary drive. The bearing arrangement is preferably designed as a fixed bearing arrangement or a floating bearing arrangement. It is advantageous if the temperature control fluid flows through the bearing arrangement during operation and is capable of controlling its temperature. This is especially the case if the temperature control fluid is a cooling fluid.

[0026] It is expedient if the tempering roller assembly has at least one additional bearing assembly for supporting the tempering roller. The at least one additional bearing assembly is preferably assigned to the other roller journal and preferably rotates around it. It is advantageously designed as a rolling bearing assembly, in particular a ball bearing assembly, and comprises at least one bearing. It is expedient if, during operation, the tempering fluid flows through the additional bearing assembly and is capable of tempering it. This is especially the case if the tempering fluid is a cooling fluid.

[0027] The design according to subclaim 11 is particularly space-saving. Furthermore, a particularly rigid connection is possible. The housing protects, for example, the rotary drive, the bearing assembly, and the angle sensor. It is advantageously dimensionally stable and is made of metal, plastic, or the like. The housing is preferably openable, for example, for maintenance or assembly / disassembly work.

[0028] The design according to subclaim 13 allows a particularly high tempering fluid flow, which in turn leads to a particularly powerful tempering roller arrangement with regard to tempering.

[0029] According to subclaim 14, the tempering roller assembly has a tempering fluid circuit. It is expedient if at least one tempering device, such as a heat exchanger, is inserted or integrated into the tempering fluid circuit for appropriately tempering the tempering fluid. The at least one tempering device is preferably arranged at a distance from the tempering roller. It is advantageous if the tempering fluid circuit has at least one tempering fluid conveying means, such as a pump, for conveying the tempering fluid. Preferably, at least one tempering fluid reservoir is also present. The tempering fluid circuit is designed, for example, as an open or closed tempering fluid circuit.

[0030] Alternatively, there is no temperature control fluid circuit. A preferred embodiment of the invention is described below by way of example with reference to the accompanying drawings. These show:

[0031] Fig. 1 is a perspective partial sectional view of a tempering roller arrangement according to the invention,

[0032] Fig. 2 essentially a longitudinal section through the rotary drive, rotation angle sensor and the bearing arrangement of the tempering roller arrangement according to Fig. 1,

[0033] Fig. 3 is a view showing the illustrated tempering roller arrangement in its entirety in a tempering fluid circuit, and

[0034] Fig. 4 a simplified printing system with tempering rollers shown

[0035] Referring first to Figures 1 to 3, a tempering roller arrangement 1 comprises a tempering roller 2 and a rotary drive 3 for driving the tempering roller 2 in rotation during operation, i.e. in particular during processing or machining of a material web.

[0036] The tempering roller assembly 1 also includes a frame with a first wall 4, such as a side wall, and a second wall 5, such as a side wall. The walls 4, 5 extend parallel to each other and vertically. They are spaced apart from each other and supported against a floor (not shown), such as a production floor.

[0037] The tempering roller 2 has a roller body 6. It further comprises a first roller neck 7 and a second roller neck 8, which are connected to the roller body 6, for example, in a one-piece manner, and protrude from it in opposite directions. The first roller neck 7 is (essentially) hollow cylindrical. The second roller neck 8 is also (essentially) hollow cylindrical. The roller necks 7, 8 are aligned with one another. The roller body 6 and the roller necks 7, 8 form a longitudinal central axis 9, which also forms a rotational axis of the tempering roller 2.

[0038] The roller body 6, in turn, has a roller shell 10, which is circular in cross-section and extends around the longitudinal center axis 9. The roller shell 10 is hollow cylindrical and has a material web contact surface or material web guide surface for the material web on its outside.

[0039] The roller body 6 also comprises a first end part 11 and a second end part 12, each of which is (essentially) circular disk-shaped and runs parallel to one another. The first end part 11 adjoins the first roller neck 7 and the roller shell 10 at its end and is connected to them, for example, as a one-piece joint. The second end part 12 adjoins the second roller neck 8 and the roller shell 10 at its end and is connected to them, for example, as a one-piece joint.

[0040] The end portions 11, 12 and the roller shell 10 spatially define a cylindrical interior space 13 radially outward and in the direction of the longitudinal center axis 9. Furthermore, the tempering roller 2 has an internal channel system for a tempering fluid.

[0041] For this purpose, an inlet channel 14 is formed in the first roll neck 7, which has a circular cross-section. The inlet channel 14 extends straight along the longitudinal center axis 9 and around it. It is arranged centrally in the first roll neck 7 and is delimited radially outwardly or circumferentially. The inlet channel 14 forms an inlet or inlet opening 15, which faces away from the first end part 11. The inlet 15 is formed in a free end face of the first roll neck 7. The inlet channel 14 extends into the first end part 11.

[0042] Arranged in the first end portion 11 are a plurality of first radial channels 16, which adjoin the first inlet channel 14 and extend radially outward from the first inlet channel 14 or from the longitudinal center axis 9. They are preferably circular in cross-section and, for example, arranged at equal angular spacing from one another. They are circumferentially delimited.

[0043] In a wall 17 of the roll shell 10 or in the roll shell 10 itself, a plurality of axial channels 18 are arranged, which are preferably arranged circumferentially at equal distances from one another around the longitudinal center axis 9. The axial channels 18 extend parallel to the longitudinal center axis 9 and at a distance from it. They run straight and are in direct or indirect flow connection with the first radial channels 16. It is expedient if each axial channel 18 has a circular cross-section and is delimited on the circumference. For example, the number of axial channels 18 and first radial channels 16 is identical. In the second end part 12, a plurality of second radial channels 19 are arranged, which are in direct or indirect flow connection with the axial channels 18. The second radial channels 19 extend straight and radially with respect to the longitudinal center axis 9. They are preferably circular in cross-section and delimited on the circumference.For example, the number of axial channels 18 and second radial channels 19 is identical.

[0044] An outlet channel 20 is formed in the second roll neck 8, into which the second radial channels 19 open. The outlet channel 20 is circular in cross-section. It extends straight along the longitudinal center axis 9 and around this axis. The outlet channel 20 is arranged centrally in the second roll neck 8 and is limited radially outwards. The outlet channel 20 forms an outlet 21 or an outlet opening. The outlet 21 faces away from the second end part 12 and the inlet 15. It is formed in a free end face of the second roll neck 8. The outlet 21 and inlet 15 are arranged at a distance from one another. They are arranged in different roll necks 7, 8. The inlet channel 14 and outlet channel 20 are also arranged in different roll necks 7, 8. The inlet channel 14 and outlet channel 20 are aligned with one another.

[0045] During operation, a tempering fluid, such as water, is able to flow into the inlet channel 14 or the first roll neck 7 via the inlet 15. The tempering fluid flows via the inlet channel 14 in the first roll neck 7 into the first end part 11. In a first transition region between the inlet channel 14 and the first radial channels 16, it is deflected, preferably by (approx.) 90°, and then flows radially outwards in the first end part 11 in the first radial channels 16, i.e. away from the longitudinal center axis 9. The tempering fluid is then deflected in a second transition region between the first radial channels 16 and the axial channels 18, preferably by (approx.) 90°, and then flows in the roll shell 10 in the axial channels 18 in the direction of the second end part 12. It flows parallel to the longitudinal center axis 9 and at a distance from it. The tempering fluid is then distributed in a third transition area between the axial channels 18 and the second radial channels 19, preferably by (approx.) 90°, and flows in the second end part 12 in the second radial channels 19 in the direction of the outlet channel 20 or the longitudinal center axis 9. In a fourth transition region between the second radial channels 19 and the outlet channel 20, the tempering fluid is deflected, preferably by (approx.) 90°, and flows in the outlet channel 20 in the second roll neck 8 to the outlet 21, ie away from the inlet 15. There, the tempering fluid leaves the tempering roller 2.

[0046] The rotary drive 3, which is designed as an electric rotary drive, is arranged on the first roll neck 7 at a distance from the first end part 11. It extends (essentially) from the inlet 15 in the direction of the first end part 11. The rotary drive 3 has an inner rotor 22, which is directly connected to the first roll neck 7 on the circumferential side or outside and is rotationally fixedly connected to it, for example via a positive and / or non-positive connection, such as a screw connection, tongue and groove connection or the like. The rotor 22 is hollow cylindrical and extends around the longitudinal central axis 9. The rotary drive 3 also has an outer stator 23, which extends around the rotor 22 and rotates around its circumferential side. The stator 23 is hollow cylindrical. A particularly high degree of rigidity and / orrigid connection so that unwanted vibrations and target position deviations of the roller shell 6 during operation, for example in a printing operation, are prevented or reduced.

[0047] The tempering roller assembly 1 comprises a housing 24, which is supported by and arranged on the first wall 4. The housing 24 protrudes from the first wall 4 on both sides along the longitudinal center axis 9 and, during operation, is closed adjacent to the inlet 15 by a preferably removable, annular cover 25. On the side facing the first end portion 11, the housing 24 has an annular wall 26. The housing 24 circumferentially surrounds the first roller neck 7, at least in part.

[0048] The rotary drive 3 is housed in the housing 24. The stator 23 is supported by the housing 24. It is connected internally, directly or indirectly, to the housing 24 and is stationary.

[0049] Also housed in the housing 24 is a (first) bearing assembly 27, which is located between the first end part 11 and the rotary drive 3. The bearing assembly 27 is designed as a fixed bearing assembly. It comprises a first ball bearing 28 and a second ball bearing 29, which are arranged adjacent to one another and, for example, abut against one another at the end faces. It is advantageous if the ball bearings 28, 29 are designed as angular contact ball bearings. The bearing assembly 27 is arranged adjacent to the first wall 4.

[0050] Each ball bearing 28, 29 has an inner ring 30 or 31, respectively, which sits on the first roll neck 7 and is connected thereto in a rotationally fixed manner. Furthermore, each ball bearing 28, 29 has an outer ring 32 or 33 or a bearing housing, which extends around the respective inner ring 30 or 31 and is held by the housing 24. Each ball bearing 28, 29 also comprises a plurality of bearing balls 34 or 35, respectively, which are arranged between the inner ring 30 or 31 and outer ring 32 or 33 of the respective ball bearing 28 or 29 and are held by a corresponding cage.

[0051] Between the bearing arrangement 27 and the first end part 11 is a rotation angle sensor 36, which is arranged adjacent to the bearing arrangement 27 and spaced from the first end part 11. The rotation angle sensor 36 sits on the first roll neck 7 and rotates around it. It is also housed in the housing 24 and extends adjacent to the wall 26. The rotation angle sensor 36 has a stationary read head, which is advantageously fixedly connected to the bearing housing of the adjacent ball bearing 29. Preferably, it also comprises a graduation carrier, which is arranged adjacent to the read head and is rotationally fixedly connected to the first roll neck 7. For example, an additional read head is present or the rotation angle sensor 36 has an additional read head in order to compensate for concentricity tolerances of the first roll neck 7.

[0052] The rotary drive 3, the bearing arrangement 27 and the rotation angle sensor 36 are arranged along the longitudinal center axis 9 on / at the first roll neck 7.

[0053] A further (second) bearing arrangement 37, designed as a ball bearing, is seated on the second roll neck 8. The further bearing arrangement 37 has an inner ring 38 and an outer ring 39, as well as bearing balls 40 arranged between them. The inner ring 38 sits on the second roll neck 8 and is connected to it in a rotationally fixed manner. The outer ring 39 is supported by the second wall 5. The bearing balls 40 are held by a cage. The further bearing arrangement 37 is arranged adjacent to the second wall 5 and the outlet 21. It is designed as a floating bearing.

[0054] Since the tempering roller assembly 1 does not require a gear or coupling, this results in particularly high (system) rigidity. A (torsionally) rigid or (torsionally) fixed connection is always present between the rotary drive 3 and the roller body 6.

[0055] Since the first roll neck 7 is only responsible for supplying the tempering fluid and the second roll neck 8 is only responsible for discharging the tempering fluid, particularly large flow cross sections are available for the tempering fluid, which allows for extremely efficient energy transfer during operation.

[0056] As shown in Fig. 3, the tempering roller assembly 1 is integrated into a tempering fluid circuit in which at least one heat exchanger 41, preferably several, such as two, heat exchangers, is located, and in which the tempering fluid flows during operation. The outlet 21 is in direct or indirect flow connection with a heat exchanger inlet of the at least one heat exchanger 41. A heat exchanger outlet of the at least one heat exchanger 41 is in direct or indirect flow connection with the inlet 15.

[0057] The operation of the tempering roller assembly 1 is described below. Current flows through the rotary drive 3. The stator 23 generates a magnetic field during operation. The associated rotor 22 is thus driven in rotation and rotates within the stator 23 around the longitudinal center axis 9, which leads to a corresponding rotary drive of the tempering roller 2 around the longitudinal center axis 9.

[0058] As already mentioned, the tempering fluid enters the first roll neck 7 via the inlet 15 and flows through the inlet channel 14 toward the first radial channels 16. The tempering roller 2 rotates. It can be driven in rotation and simultaneously flowed through. The tempering fluid flows through the rotary drive 3, in particular its rotor 22 or stator 23, the bearing assembly 27, and the rotation angle sensor 36. It flows via the roller body 6 into the second roll neck 8, where it flows through the further bearing assembly 37. The tempering fluid then leaves the tempering roller 2 and flows back to the inlet 15 via the at least one heat exchanger 41.

[0059] The graduation carrier rotates around the longitudinal center axis 9 and moves past the reading head. With a servo drive, the rotational position of the first roll neck 7 or the tempering roller 2 or the rotor 22 is determined via the rotation angle sensor 36. This current position of the first roll neck 7 or the tempering roller 2 or the rotor 22 is transmitted, advantageously continuously, to a servo controller. In a servo electronics system, the current position of the first roll neck 7 or the tempering roller 2 or the rotor 22 is then preferably compared with a corresponding target position and adjusted if necessary. If the tempering roller arrangement 1 is designed as a cooling roller arrangement, cooling water preferably forms the tempering fluid.The cooling water is able to flow through the rotary drive 3, in particular the rotor 22 and stator 23, and the bearing assembly 27, and advantageously also the rotation angle sensor 36, and to cool them, in particular from the radial inside, which increases their service life. The cooling water also flows through and cools the roll shell 10, which leads to cooling of the material web guided around the roll shell 10 or resting against it on the outside. Advantageously, the tempering roll 2 provides a constant temperature profile on its outer surface. The external cooling leads to a particularly long service life. Preferably, the cooling water also flows through and cools the additional bearing assembly 37. The cooling water absorbs thermal energy from the part to be cooled or cooled and is heated. The cooling water is cooled again in the at least one heat exchanger 41.

[0060] If the tempering roller assembly 1 is designed as a heating roller assembly, steam, for example, forms the tempering fluid. The steam is capable of flowing through the rotary drive 3, in particular the rotor 22 and stator 23, and the bearing assembly 27, and advantageously also the rotation angle sensor 36. The steam also flows through the roller shell 10, which leads to heating of the material web guided around the roller shell 10 or adjacent to it on the outside. Preferably, the steam also flows through the additional bearing assembly 37. The steam cools as it flows through the roller shell 10 and is reheated. Alternatively, two rotary drives 3 are assigned to the tempering roller 2, for example. The tempering roller 2 is then located, for example, between the two rotary drives 3.

[0061] Fig. 4 illustrates a printing system with several tempering rollers 2, which serve as cooling rollers. Reference is made to their previous description. The printing system is capable of printing a preferably continuous material web 42.

[0062] The printing system has a pre-coating device 43 which is capable of applying a pre-coating to the material web 42, at least on its printing side.

[0063] It further comprises a printing unit 44 arranged downstream of the pre-coating device 43, which is designed, for example, as a digital printing unit and is capable of printing the material web 42. The printing unit 44 has a tempering roller 2 and a print head 45 arranged adjacent to it. The coated material web 42 is guided externally around the tempering roller 2, which also forms a printing roller. In a printing nip between the tempering roller 2 and the print head 45, the material web 42 is printed on its printing side. The material web 42, which rests on the outside, in particular flatly, against the roller shell 10, is cooled in the process. Thermal energy can thus be dissipated from the material web 42. In the printing unit 44, there is a high flow of cooling water and, at the same time, a high rigidity of the entire drive system. The printed material web 42 then runs through a drying device 46 of the printing system, where the printed material web 42 is heated.

[0064] The dried material web 42 is then cooled in a cooling device 47 of the printing system, which comprises two tempering rollers 2. The material web 42 is guided around the tempering rollers 2 in the cooling device 47. The material web 42 rests there on the outside, in particular flatly, against the roller shell 10 of the respective tempering roller 2, so that it is cooled. Thermal energy can thus be dissipated from the material web 42. In the cooling device 47, there is a high flow of cooling water while simultaneously maintaining high rigidity of the entire drive system.

[0065] Alternatively, the tempering roller 2 can be used, for example, in a corrugated cardboard plant, for example as a cross-cutter roller, heating roller or the like.

[0066] According to an alternative embodiment (not shown), no tempering fluid circuit is present. The tempering roller 2 is therefore not integrated into a tempering fluid circuit.

[0067] The terms “axial”, “radial” or the like used here refer in particular to the longitudinal central axis 9.

Claims

Patent claims 1. Tempering roller arrangement, comprising a) a tempering roller (2) for tempering a moving material balm (42), wherein the tempering roller (2) has i) a roller body (6), ii) a first roller journal (7) and a second roller journal (8) connected to the roller body (6) for supporting the roller body (6), iii) at least one tempering fluid inlet (15) for a tempering fluid on a first side of the tempering roller (2), and iv) at least one tempering fluid outlet (21) for the tempering fluid, which is in flow connection with the at least one tempering fluid inlet (15), on a second side of the tempering roller (2) opposite the first side, and b) a rotary drive (3) having a rotor (22) and driving the tempering roller in rotation. (2).

2. Tempering roller arrangement according to claim 1, characterized in that the first roller neck (7) has at least one tempering fluid inlet channel (14) opening into the roller body (6) and forms the at least one tempering fluid inlet (15).

3. Tempering roller arrangement according to claim 1 or 2, characterized in that the second roller neck (8) has at least one tempering fluid outlet channel (20) extending from the roller body (6). and forms at least one tempering fluid outlet (21).

4. Tempering roller arrangement according to one of the preceding claims, characterized in that the rotary drive (3) is designed as a hollow shaft drive.

5. Tempering roller arrangement according to one of the preceding claims, characterized in that the rotor (22) is arranged on the first or second roller journal (7, 8) and the rotary drive (3) also has a stator (23) surrounding the rotor (22).

6. Tempering roller arrangement according to one of the preceding claims, characterized by a rotation angle sensor (36) for determining a respective rotational position of the rotor (22).

7. Tempering roller arrangement according to claim 6, characterized in that the rotation angle sensor (36) is arranged between the rotary drive (3) and the roller body (6).

8. Tempering roller arrangement according to claim 6 or 7, characterized in that the rotation angle sensor (36) is arranged on a side of the rotary drive (3) facing the roller body (6).

9. Tempering roller arrangement according to one of claims 6 to 8, characterized in that the rotation angle sensor (36) is arranged on the roller journal (7) carrying the rotary drive (3). Tempering roller arrangement according to one of claims 6 to 9, characterized by a bearing arrangement (27) arranged between the rotation angle sensor (36) and the rotary drive (3) for supporting the tempering roller (2). Tempering roller arrangement according to claim 10, characterized by a housing (24) in which the rotary drive (3), the bearing arrangement (27), and the rotation angle sensor (36) are each at least partially, preferably completely, housed together. Tempering roller arrangement according to claim 10 or 11, characterized in that, during operation, the tempering fluid can flow through the rotary drive (3), the bearing arrangement (27), and the rotation angle sensor (36). Tempering roller arrangement according to one of the preceding claims, characterized in that, during operation, the tempering fluid only flows through the first roller neck (7) and the second roller neck (8) in a unidirectional manner.Tempering roller arrangement according to one of the preceding claims, characterized by a tempering fluid circuit. Printing system a) with at least one tempering roller arrangement (1) according to one of the preceding claims, b) wherein the tempering roller (2) is designed as a printing roller for printing the material web (42) and / or a cooling cylinder for cooling the printed material web (42).

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