Temperature adjusting roller device

Abstract

The invention relates to a temperature-control roller arrangement comprising a temperature-control roller (2) for controlling the temperature of a movable material web (42). The temperature adjusting roller (2) is provided with a roller body (6); the first roller neck (7) and the second roller neck (8) are connected with the roller body (6) and support the roller body (6); at least one temperature control fluid inlet (15) on a first side of the temperature control roller (2) for a temperature control fluid and at least one temperature control fluid outlet (21) on a second side of the temperature control roller (2) opposite the first side for a temperature control fluid and forming a fluid connection with at least one temperature control fluid inlet (15). The temperature control roller device further comprises a rotary drive (3) which is in driving connection with the temperature control roller (2), has a rotor (22) and is used for rotationally driving the temperature control roller (2).

Description

Technical Field

[0001] This patent application claims the priority of German patent application DE 10 2022 211 429.9, the content of which is incorporated herein by reference.

[0002] The invention relates to a temperature control roller device for controlling the temperature of a moving material web. In addition, the invention also relates to a printing device having at least one such temperature control roller device. Background Art

[0003] Temperature control roller devices are already known from previous use. Usually, the temperature control fluid is introduced into the temperature control roller from one side and discharged again on the same side. The disadvantage is that the temperature control capacity of such temperature control rollers is limited. Summary of the invention

[0004] The object of the invention is to overcome the disadvantages of the prior art. A temperature control roller arrangement should be produced which is particularly robust during operation, i.e. has a particularly strong temperature control capability. In addition, the temperature control roller arrangement should be particularly economical during operation. Furthermore, a corresponding printing device should be provided.

[0005] According to the invention, this object is achieved by the features specified in the main claims 1 and 15. The core of the invention is that at least one inlet and outlet for the temperature-control fluid are arranged on opposite sides of the temperature-control roller, thereby allowing a particularly large temperature-control fluid flow rate to the temperature-control roller during operation, and thus enabling a particularly high energy dissipation from the material web or a supply to the material web, depending on the design or use of the temperature-control roller arrangement. The at least one inlet and outlet for the temperature-control fluid are preferably arranged at a certain distance from each other and advantageously arranged opposite each other. It is advantageous if they are each arranged at the end relative to the temperature-control roller.

[0006] For example, the temperature control roller device is designed as a cooling roller device for material web cooling. As an alternative, it can also be designed as a heating roller device for material web heating.

[0007] For example, the temperature control fluid is a liquid and / or a gas. Preferably, the temperature control fluid is water or contains water.

[0008] It is suitable if the material web consists of paper or cardboard. It can be single-layer or multi-layer. The material web is preferably conveyed during operation, in particular continuously. For example, it is a printed web, a printed web or a printable web. It is advantageous if it is a corrugated board web or can be used to produce corrugated board (web).

[0009] Advantageously, the temperature control roller is directly connected to the material web during operation or temperature control, in particular over a large area, in particular in a heat-conducting connection. Preferably, the temperature control roller extends perpendicularly or obliquely to the material web and preferably rotates during operation. It is advantageous if the temperature control roller has a rotational or swivel direction during operation and if the temperature control roller moves in a tangential direction corresponding to the conveying direction of the material web near the material web. Advantageously, the temperature control roller has a tangential speed that is the same as the conveying speed of the material web.

[0010] The roller body preferably comprises a roller shell. It preferably has a decreasing slope. It is advantageous if the roller shell has a constant outer diameter and / or a constant inner diameter. It preferably has a width that is greater than the width of the web material. It is preferably designed as a hollow cylinder. It is expedient if two end pieces or side pieces abut the roller shell at the ends and extend towards each other. Advantageously, the end pieces are spaced apart and parallel to each other. For example, the roller shell is connected to the end pieces as a whole. As an alternative, the two are initially designed separately. It is expedient if the temperature control roller is designed as a double-layer roller.

[0011] Preferably, the roll neck advantageously forms a horizontal bearing axis. For example, the roll neck and the roll body are connected together as a whole. As an alternative, the two are initially designed separately.

[0012] For example, the fluid connection between at least one temperature control fluid inlet and temperature control fluid outlet is formed by at least one temperature control fluid channel, pipeline, inner space, etc. of the temperature control roller. For example, at least one temperature control fluid inlet and temperature control fluid outlet are in indirect fluid connection with each other.

[0013] It is advantageous if the rotary drive is designed as an electric rotary drive and is capable of converting electrical energy into a rotary or turning motion. It is preferably gearless. Due to the rotary drive of the temperature control roller, the temperature control roller preferably forms a material web conveyor roller during operation. Advantageously, the temperature control roller is capable of conveying or moving the material web. Preferably, it is capable of guiding the material web. For example, it is capable of reversing or deflecting the material web.

[0014] For example, the printing device is a component of the corrugated board device. As an alternative, it is arranged upstream of the corrugated board device. Preferably, the printing device is designed as a digital printing device and can print material webs.

[0015] Further advantageous embodiments of the invention are disclosed in the dependent claims.

[0016] According to dependent claim 2, at least one inlet channel for the temperature-control fluid preferably has a straight course in the first roll neck, which is advantageous in terms of fluid technology and enables particularly large flow rates of the temperature-control fluid. The pressure loss is relatively low. It is preferably closed in the circumferential direction and advantageously has a circular cross section. Preferably, the transverse dimensions of the at least one inlet channel for the temperature-control fluid are constant. It is expedient if the at least one inlet channel for the temperature-control fluid extends axially centrally in the first roll neck. Preferably, there is only one inlet channel for the temperature-control fluid. Preferably, the diameter of the inlet channel for the temperature-control fluid is between 30% and 80% of the outer diameter of the first journal. Preferably, the first roll neck is designed (essentially) as a hollow cylinder.

[0017] According to dependent claim 3, at least one outlet channel for the temperature-control fluid preferably has a straight course in the second roll neck, which is advantageous in terms of fluid technology and enables particularly large temperature-control fluid flows. The pressure loss is relatively low. It is preferably closed in the circumferential direction and advantageously has a circular cross section. Preferably, the transverse dimensions of the at least one outlet channel for the temperature-control fluid are constant. It is expedient if the at least one outlet channel for the temperature-control fluid extends axially centrally in the second roll neck. Preferably, there is only one outlet channel for the temperature-control fluid. Preferably, the diameter of the outlet channel for the temperature-control fluid is between 30% and 80% of the outer diameter of the second journal. Preferably, the second roll neck is designed (essentially) as a hollow cylinder.

[0018] According to dependent claim 4, the rotary drive is designed as a hollow shaft drive. For example, the hollow shaft of the hollow shaft drive forms the rotor. Preferably, the rotary drive is in direct drive connection with the temperature control roller.

[0019] The rotary drive device obtained according to the design solution described in the dependent claim 5 does not affect the flow of the temperature-control fluid in the adjacent roller neck. Unlike the temperature-control roller devices of the prior art, the rotary drive device does not constitute an obstacle and does not hinder or restrict the guidance of the temperature-control fluid. It is suitable if the rotor is arranged directly on the first or second roller neck and forms a torsion-proof connection with the rotary drive device of the temperature-control roller through it. Advantageously, the temperature-control roller can be directly driven in rotation. Preferably, the rotary drive device is a direct drive device. The rotor and the stator are (essentially) hollow cylinders. Preferably, the rotor is designed as an inner rotor. It is suitable if it contains a plurality of rotor blades, especially made of metal sheets. Advantageously, the stator has a permanent magnet device and / or an electromagnetic device. Preferably, it can generate a magnetic field that detects the rotor and exerts an influence on it during operation. During operation, the temperature-control fluid flows through the rotary drive device, especially its rotor and stator, and preferably can be temperature-controlled. This is particularly applicable to the case where the temperature-control fluid is a cooling fluid.

[0020] Preferably, the rotation angle sensor according to dependent claim 6 is capable of converting the mechanical angular position of the rotor or the temperature control roller into a corresponding electrical signal. Preferably, the rotation angle sensor can be used to accurately set or operate, in particular to control the rotary drive. It is advantageous if the rotation angle sensor is designed as an inductive or potentiometric or optical / scanning rotation angle sensor. It is suitable if the rotation angle sensor has a modular design. Advantageously, it is expandable and / or adjustable. Preferably, the rotation angle sensor is sealed with respect to the environment by (air) overpressure, in particular to prevent dirt.

[0021] The rotation angle sensor according to claim 7 allows particularly precise or accurate setting or regulation of the temperature control roller. The rotation angle sensor is arranged in particular near the roller body, ie near the load. It is arranged at the load end relative to the rotary drive.

[0022] The embodiments according to dependent claim 7 also apply essentially analogously to dependent claim 8 .

[0023] Preferably, the rotation angle sensor according to claim 9 is annular and surrounds the roll neck carrying the rotary drive. During operation, a temperature control fluid flows through the rotation angle sensor and preferably can temperature control it. This applies in particular if the temperature control fluid is a cooling fluid.

[0024] Preferably, the bearing arrangement according to claim 10 is designed as a rolling bearing arrangement, in particular a ball bearing arrangement, and comprises at least one bearing. Advantageously, it surrounds a roll neck carrying the rotary drive. Preferably, the bearing arrangement is designed as a fixed bearing arrangement or a floating bearing arrangement. It is advantageous if a temperature-control fluid flows through the bearing arrangement during operation and can be temperature-controlled. This applies in particular if the temperature-control fluid is a cooling fluid.

[0025] It is expedient if the temperature control roller arrangement has at least one additional bearing arrangement for supporting the temperature control roller. Preferably, at least one further bearing arrangement is paired with the further roll neck and preferably surrounds the latter. Advantageously, it is designed as a rolling bearing arrangement, in particular a ball bearing arrangement, and comprises at least one bearing. It is expedient if the temperature control fluid flows through the further bearing arrangement during operation and can temperature control the latter. This applies in particular if the temperature control fluid is a cooling fluid.

[0026] The design according to dependent claim 11 is particularly space-saving. In addition, a particularly good rigid connection can be achieved. For example, the housing protects the rotary drive, the bearing arrangement and the rotary angle sensor. Advantageously, it is dimensionally stable and is made, for example, of metal, plastic or the like. Preferably, the housing can be opened, for example for maintenance or assembly / disassembly work.

[0027] The embodiment according to dependent claim 13 enables a particularly high temperature control fluid flow rate and thus a particularly powerful temperature control roller arrangement in terms of temperature control.

[0028] According to dependent claim 14, the temperature-control roller device has a temperature-control fluid circulation loop. It is suitable if at least one temperature-control tool, such as a heat exchanger, is installed or integrated in the temperature-control fluid circulation loop to control the temperature of the temperature-control fluid accordingly. Preferably, at least one temperature-control tool is arranged at a certain distance from the temperature-control roller. It is advantageous if the temperature-control fluid circulation loop has at least one temperature-control fluid conveying device, such as a pump, to convey the temperature-control fluid. Preferably, at least one temperature-control fluid storage tank is also arranged. For example, the temperature-control fluid circulation loop is designed as an open or closed temperature-control fluid circulation loop.

[0029] As an alternative, no temperature control fluid circulation circuit is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. In the accompanying drawings:

[0031] Figure 1 A partial perspective cross-sectional view of a temperature control roller device according to the present invention is shown;

[0032] Figure 2 Mainly shows that according to Figure 1 The temperature control roller device Figure 2 A longitudinal cross-sectional view of a rotary drive device, a rotary angle sensor and a bearing device shown in FIG.

[0033] Figure 3 A view showing the overall arrangement of the temperature control rollers in the temperature control fluid circulation circuit, and

[0034] Figure 4 A simplified printing apparatus is shown with a temperature-controlled roller as shown. DETAILED DESCRIPTION

[0035] First, according to Figures 1 to 3 The temperature control roller arrangement 1 comprises a temperature control roller 2 and a rotary drive 3 which rotationally drives the temperature control roller 2 during operation, ie in particular during processing or treatment of a material web.

[0036] In addition, the temperature control roller device 1 has a bracket, which has a first wall plate 4 (for example, a side wall plate) and a second wall plate 5 (for example, a side wall plate). The wall plates 4 and 5 extend parallel to each other and vertically. The two are arranged at a certain distance and supported on the ground (not shown), such as a workshop floor.

[0037] The temperature control roller 2 has a roller body 6 .

[0038] The temperature control roller further comprises a first roll neck 7 and a second roll neck 8, which are connected, for example, in one piece to the roller body 6 and project from the roller body in opposite directions. The first roll neck 7 is (essentially) a hollow cylinder. The second roll neck 8 is (essentially) also a hollow cylinder. The roll necks 7, 8 are aligned with each other. The roller body 6 and the roll necks 7, 8 form a longitudinal center axis 9, which also constitutes the rotation axis of the temperature control roller 2.

[0039] The roller body 6 also has a roller shell 10, which has a circular cross section and extends about the longitudinal center axis 9. The roller shell 10 is a hollow cylinder and has a material web contact surface or material web guide surface on the outside.

[0040] In addition, the roll body 6 comprises a first end piece 11 and a second end piece 12, which are (substantially) designed in a disc shape and are parallel to each other. The first end piece 11 is connected to the ends of the first roll neck 7 and the roll shell 10, and is, for example, integrally connected to them. The second end piece 12 is connected to the ends of the second roll neck 8 and the roll shell 10, and is, for example, integrally connected to them.

[0041] The end pieces 11 , 12 and the roller shell 10 spatially delimit a cylindrical inner space 13 radially outward in the direction of the longitudinal center axis 9 .

[0042] Furthermore, the temperature control roller 2 has an internal channel system for the temperature control fluid.

[0043] For this purpose, an inlet channel 14 with a circular cross section is formed in the first roll neck 7. The inlet channel 14 extends straight along the longitudinal center axis 9 and around the center axis 9. It is arranged centrally in the first roll neck 7 and is radially or circumferentially delimited toward the outside. The inlet channel 14 forms an inlet or input opening 15, which faces away from the first end piece 11. The inlet 15 is formed on the free end face of the first roll neck 7. The inlet channel 14 extends to the first end piece 11.

[0044] A plurality of first radial channels 16 are arranged in the first end piece 11, which are connected to the first inlet channel 14 and extend radially outward from the first inlet channel 14 or straight relative to the longitudinal center axis 9. Preferably, they are circular in cross section and are arranged, for example, at a uniform angle to each other. They are limited in the circumferential direction.

[0045] In the wall 17 of the roller shell 10 or in the roller shell 10 itself, a plurality of axial channels 18 are arranged, preferably uniformly arranged in the circumferential direction around the longitudinal center axis 9 and at a certain distance. The axial channels 18 extend parallel to the longitudinal center axis 9 and at a certain distance therefrom. They extend straight and are in direct or indirect fluid connection with the first radial channels 16. Advantageously, each axial channel 18 has a circular cross section and is limited in the circumferential direction. For example, the number of axial channels 18 and the number of first radial channels 16 are the same.

[0046] A plurality of second radial channels 19 are arranged in the second end piece 12, which are in direct or indirect fluid connection with the axial channel 18. The second radial channels 19 are straight and extend radially relative to the longitudinal center axis 9. They preferably have a circular cross section and are limited in the circumferential direction. For example, the number of axial channels 18 and second radial channels 19 is the same.

[0047] An outlet channel 20 is formed in the second roll neck 8, into which the second radial channel 19 flows. The outlet channel 20 has a circular cross section. It 14 extends straight along the longitudinal center axis 9 and around the center axis 9. The outlet channel 20 is arranged centrally in the second roll neck 8 and is radially limited toward the outside. The outlet channel 20 forms an outlet 21 or an output opening. The outlet 21 is opposite to the second end piece 12 and the inlet 15. It is formed on the free end face of the second roll neck 8. The outlet 21 and the inlet 15 are arranged at a distance from each other. They are arranged in different roll necks 7, 8. The inlet channel 14 and the outlet channel 20 are also arranged in different roll necks 7, 8. The inlet channel 14 and the outlet channel 20 are aligned with each other.

[0048] During operation, a temperature control fluid, for example water, can flow through the inlet 15 into the inlet channel 14 or into the first roll neck 7. The temperature control fluid flows through the inlet channel 14 in the first roll neck 7 into the first end piece 11. In the first transition region between the inlet channel 14 and the first radial channel 16, the temperature control fluid is preferably redirected by (approximately) 90° and then flows radially outwards, i.e. away from the longitudinal center axis 9, in the first radial channel 16 in the first end piece 11. Next, the temperature control fluid is preferably redirected by (approximately) 90° in the second transition region between the first radial channel 16 and the axial channel 18 and then flows in the axial channel 18 in the roll shell 10 in the direction of the second end piece 12. It flows parallel to the longitudinal center axis 9 and at a distance therefrom. Afterwards, the temperature control fluid is preferably redirected by (approximately) 90° in the third transition region between the axial channel 18 and the second radial channel 19 and then flows in the second radial channel 19 in the second end piece 12 in the direction of the outlet channel 20 or the longitudinal center axis 9. In the fourth transition region between the second radial channel 19 and the outlet channel 20 , the temperature control fluid is preferably redirected by (approximately) 90° and then flows in the outlet channel 20 in the second roll neck 8 to the outlet 21 , ie away from the inlet 15 . There, the temperature control fluid leaves the temperature control roller 2 .

[0049] The rotary drive 3, designed as an electric rotary drive, is arranged on the first roll neck 7 at a distance from the first end piece 11. It extends (essentially) from the inlet 15 in the direction of the first end piece 11. The rotary drive 3 has an inner rotor 22, which is directly connected to the first roll neck 7 in the circumferential direction or on the outside and is connected to the roll neck in a rotationally fixed manner by a form fit and / or friction fit, such as a screw connection, a tongue-and-groove connection or the like. The rotor 22 is a hollow cylinder and extends around the longitudinal center axis 9. In addition, the rotary drive 3 has an outer stator 23, which extends around the rotor 22 and surrounds it in the circumferential direction. The stator 23 is designed as a hollow cylinder. There is a particularly high rigidity or a rigid connection between the rotary drive 3 and the temperature control roller 2, so that during operation, for example during printing, unintentional vibrations and standard position deviations of the roll cover 6 are suppressed or reduced.

[0050] The temperature control roller device 1 comprises a housing 24 which is carried by the first wall 4 and arranged thereon. The housing 24 protrudes from the first wall 4 on both sides along the longitudinal center axis 9 and is closed by a preferably removable and circular cover 25 near the inlet 15 during operation. On the side facing the first end piece 11, the housing 24 has an annular wall 26. The housing 24 surrounds the first roll neck 7 in the circumferential direction at least in a partial region.

[0051] The rotary drive device 3 is arranged in a housing 24. The stator 23 is carried by the housing 24. It is directly or indirectly close to the housing 24 on the inside and is fixed in position.

[0052] In addition, a (first) bearing device 27 is arranged in the housing 24, which is located between the first end piece 11 and the rotary drive device 3. The bearing device 27 is designed as a fixed bearing device. It includes a first ball bearing 28 and a second ball bearing 29, which are arranged close to each other and, for example, abut against each other on the end faces. It is more advantageous if the ball bearings 28 and 29 are designed as angular contact ball bearings. The bearing device 27 is arranged near the first wall 4.

[0053] Each ball bearing 28, 29 has an inner ring 30 or 31, which is located on the first roll neck 7 and is connected to it in a rotationally fixed manner. In addition, each ball bearing 28, 29 also has an outer ring 32 or 33 or a bearing seat, which extends around the corresponding inner ring 30 or 31 and is fixed by the housing 24. In addition, each ball bearing 28, 29 also has a large number of bearing balls 34 or 35, which are arranged between the inner ring 30 or 31 and the outer ring 32 or 33 of the corresponding ball bearing 28 or 29 and are fixed by the corresponding cage.

[0054] The rotation angle sensor 36 is located between the bearing arrangement 27 and the first end piece 11, and is arranged close to the bearing arrangement 27 and at a distance from the first end piece 11. The rotation angle sensor 36 is located on the first roll neck 7 and rotates about it. It is also arranged in the housing 24 and extends in the vicinity of the wall 26. The rotation angle sensor 36 has a fixed position reading head, which is advantageously fixedly connected to the bearing seat of the adjacent ball bearing 29. Preferably, it also has an indexing carriage, which is arranged in the vicinity of the reading head and is connected to the first roll neck 7 in a rotationally fixed manner. For example, there is a further reading head or the rotation angle sensor 36 has a further reading head in order to compensate for concentricity tolerances of the first roll neck 7.

[0055] The rotary drive 3 , the bearing arrangement 27 and the rotation angle sensor 36 are arranged on the first roll neck 7 along the longitudinal center axis 9 .

[0056] The other (second) bearing device 37 designed as a ball bearing is located on the second roll neck 8. The other bearing device 37 has an inner ring 38 and an outer ring 39 and bearing balls 40 arranged therebetween. The inner ring 38 is located on the second roll neck 8 and is connected thereto in a rotationally fixed manner. The outer ring 39 is carried by the second wall 5. The bearing balls 40 are fixed by a cage. The other bearing device 37 is arranged in the vicinity of the second wall 5 and the outlet 21. It is designed as a floating bearing.

[0057] Since the temperature control roller arrangement 1 has no transmission or coupling, a particularly high (system) rigidity is achieved. In particular, there is always a (torsionally) rigid or (torsionally) fixed connection between the rotary drive 3 and the roller body 6 .

[0058] Since the first roll neck 7 is only responsible for the supply of the temperature control fluid and the second roll neck 8 is only responsible for the discharge of the temperature control fluid, a particularly large flow cross section is available for the temperature control fluid, so that a particularly efficient energy transfer can be achieved during operation.

[0059] like Figure 3 As shown, the temperature control roller device 1 is integrated in a temperature control fluid circulation circuit, in which there is at least one heat exchanger 41, preferably a plurality of, for example, two heat exchangers, and in which the temperature control fluid flows during operation. The outlet 21 is directly or indirectly fluidically connected to the heat exchanger input of at least one heat exchanger 41. The heat exchanger output of at least one heat exchanger 41 is directly or indirectly fluidically connected to the inlet 15.

[0060] Next, the operation of the temperature control roller device 1 will be described.

[0061] The rotary drive device 3 is energized. The stator 23 generates a magnetic field during operation. The corresponding rotor 22 is thus driven to rotate and rotates around the longitudinal center axis 9 in the stator 23, resulting in the temperature control roller 2 being driven to rotate around the longitudinal center axis 9 accordingly.

[0062] As described above, the temperature control fluid enters the first roll neck 7 through the inlet 15 and flows in the inlet channel 14 in the direction of the first radial channel 16. The temperature control roller 2 rotates during this process. It can be driven in rotation and the fluid can flow through it. The temperature control fluid flows through the rotary drive 3, in particular its rotor 22 or stator 23, the bearing device 27 and the rotation angle sensor 36. It flows through the roll body 6 into the second roll neck 8 and there flows through another bearing device 37. Subsequently, the temperature control fluid leaves the temperature control roller 2 and flows back to the inlet 15 through at least one heat exchanger 41.

[0063] The indexing carriage rotates about the longitudinal center axis 9 and moves past the reading head. In the case of a servo drive, the rotational position of the first roll neck 7 or the temperature control roller 2 or the rotor 22 is determined by the rotation angle sensor 36. Advantageously, this current position of the first roll neck 7 or the temperature control roller 2 or the rotor 22 is continuously transmitted to the servo control. Subsequently, the current position of the first roll neck 7 or the temperature control roller 2 or the rotor 22 is compared with the corresponding standard position in the servo electronics and readjusted if necessary.

[0064] If the temperature control roller device 1 is designed as a cooling roller device, cooling water preferably forms the temperature control fluid. The cooling water can flow through the rotary drive device 3, in particular the rotor 22 and the stator 23 and the bearing device 27, and advantageously can also flow through the rotation angle sensor 36, and can especially cool it radially from the inside, thereby extending their service life. The cooling water also flows through and cools the roller shell 10, thereby cooling the material web guided around the roller shell 10 or resting on the outside. Advantageously, the temperature control roller 2 has a constant temperature profile on its outside. External cooling can achieve a particularly long service life. Preferably, the cooling water also flows through and cools the other bearing device 37. The cooling water absorbs heat from the components to be cooled or cooled and heats up. The cooling water is recooled in at least one heat exchanger 41.

[0065] If the temperature control roller arrangement 1 is designed as a heating roller arrangement, water vapor, for example, forms the temperature control fluid. The water vapor can flow through the rotary drive 3, in particular the rotor 22 and the stator 23 and the bearing arrangement 27, and advantageously also through the rotation angle sensor 36. The water vapor also flows through the roller shell 10, thereby heating the material web guided around the roller shell 10 or resting on the outer side thereof. Preferably, the water vapor also flows through the further bearing arrangement 37. The water vapor cools down and is heated again while flowing through the roller shell 10.

[0066] As an alternative, the temperature control roller 2 can also be equipped with, for example, two rotary drive devices 3. For example, the temperature control roller 2 is located between the two rotary drive devices 3 in this case.

[0067] Figure 4 A printing device with a plurality of temperature control rollers 2 used as cooling rollers is shown. Reference is made to the above description. The printing device is capable of printing a material web 42 , preferably an infinite material web 42 .

[0068] The printing device has a pre-coating device 43 which is able to apply a pre-coating to the material web 42 , at least on its printing side.

[0069] It also comprises a printing unit 44 downstream of the pre-coating device 43, which is designed, for example, as a digital printing unit and is capable of printing a material web 42. The printing unit 44 has a temperature control roller 2 and a print head 45 arranged in the vicinity thereof. The coated material web 42 is guided on the outside around the temperature control roller 2, which also forms a printing roller. In the printing gap between the temperature control roller 2 and the print head 45, the material web 42 is printed on the printing side of both. In the process, the material web 42 on the outside of the roller shell 10, in particular the material web 42 that is in contact with the roller shell 10 over a large area, is cooled. As a result, heat can be discharged from the material web 42. The cold water flow in the printing unit 44 is large and the entire drive system has a high rigidity.

[0070] Next, the printed material web 42 passes through a drying station 46 of the printing press, where the printed material web 42 is heated.

[0071] Afterwards, the dried material web 42 is cooled in a cooling device 47 of the printing press, which comprises two temperature control rollers 2. The material web 42 is guided around the temperature control rollers 2 in the cooling device 47. There, the material web 42 is located outside the roller shell 10 of the corresponding temperature control roller 2, in particular, it rests on the roller shell 10 of the corresponding temperature control roller 2 with a large area, so that it is cooled. In this way, heat can be discharged from the material web 42. The cold water flow rate in the cooling device 47 is large, and at the same time, the entire drive system has a high rigidity.

[0072] As an alternative, the temperature-conditioning roller 2 can also be used in a corrugated board plant, for example as a cross-cutting roller, a heating roller or the like.

[0073] According to an alternative (not shown) embodiment, no temperature control fluid circuit is provided. The temperature control roller 2 is therefore not integrated in the temperature control fluid circuit.

[0074] The “axial”, “radial” or similar expressions used herein refer in particular to the longitudinal center axis 9 .

Claims

1. A temperature regulating roller device, comprising: a) a temperature-control roller (2) for controlling the temperature of a moving material web (42), wherein: The temperature regulating roller (2) has i) a roller body (6); ii) a first roll neck (7) and a second roll neck (8) connected to the roll body (6) and supporting the roll body (6); iii) at least one temperature control fluid inlet (15) for a temperature control fluid on a first side of the temperature control roller (2); and iv) at least one temperature-control fluid outlet (21) on a second side of the temperature-control roller (2) opposite to the first side, for the temperature-control fluid and in fluid connection with at least one of the temperature-control fluid inlets (15); and b) A rotary drive device (3) which is drive-connected to the temperature control roller (2), has a rotor (22) and is used to rotationally drive the temperature control roller (2).

2. The temperature control roller device according to claim 1, characterized in that: The first roll neck (7) has at least one temperature-control fluid inlet channel (14) leading to the roll body (6), and forms at least one temperature-control fluid inlet (15).

3. The temperature control roller device according to claim 1 or 2, characterized in that: The second roll neck (8) has at least one temperature control fluid outlet channel (20) extending from the roll body (6) and forms at least one temperature control fluid outlet (21).

4. The temperature control roller device according to any one of the preceding claims, characterized in that The rotary drive device (3) is designed as a hollow shaft drive device.

5. The temperature control roller device according to any one of the preceding claims, characterized in that The rotor (22) is arranged on the first or second roll neck (7, 8), and the rotary drive (3) additionally has a stator (23) surrounding the rotor (22).

6. The temperature control roller device according to any one of the preceding claims, characterized in that A rotation angle sensor (36) is provided for determining the specific rotational position of the rotor (22).

7. The temperature control roller device according to claim 6, characterized in that: The rotation angle sensor (36) is arranged between the rotation drive device (3) and the roller body (6).

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

9. The temperature control roller device according to any one of claims 6 to 8, characterized in that: The rotation angle sensor (36) is arranged on the roll neck (7) that carries the rotary drive device (3).

10. The temperature control roller device according to any one of claims 6 to 9, characterized in that: A bearing device (27) for supporting the temperature control roller (2) is arranged between the rotation angle sensor (36) and the rotary drive device (3).

11. The temperature control roller device according to claim 10, characterized in that: A housing (24) in which the rotary drive device (3), the bearing device (27) and the rotation angle sensor (36) are respectively at least partially, preferably completely, mounted.

12. The temperature control roller device according to claim 10 or 11, characterized in that: During operation, the temperature control fluid can flow through the rotary drive device (3), the bearing device (27) and the rotation angle sensor (36).

13. The temperature control roller device according to any one of the preceding claims, characterized in that During operation, the temperature control medium can only flow through the first roller neck (7) and the second roller neck (8) in one direction respectively.

14. The temperature control roller device according to any one of the preceding claims, characterized in that A temperature control fluid circulation loop.

15. A printing device a) having at least one temperature control roller arrangement (1) according to any one of the preceding claims, b) wherein the temperature control 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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