Device and method for transferring a fibrous material web

Abstract

The invention relates to a transfer device (10) for transferring a strip (RF), preferably an edge strip (RF) or transfer strip (RF), within a machine for producing or treating the fibrous web (F), preferably a paper, cardboard or tissue web, from a first to a further machine section, in particular from a web-discharging supporting element (3) to a web-receiving supporting element (4) or into a cable guide (26) which is associated with a web-receiving supporting element (4), is arranged outside the web running path and is formed at the start of a cable arrangement. According to the invention, the deflection element (8) is designed in the machine direction (MD) as a transfer profile (81) having an L-shaped extent in the support arm direction, and the transfer profile (81) has a surface contour oriented towards the strip (RF) and in the form of an aerodynamic wing profile.

Description

[0001] Device and method for transferring a fibrous web

[0002] The invention relates to a device for transferring a fibrous web, in particular an edge strip, preferably a transfer, feed, or threading strip, as part of a fibrous web. The transfer device is typically arranged within a machine for processing a fibrous web between two successive machine sections, for example, a forming section and a press section, or a press section and another press section, or a press section and a subsequent drying section. Arrangements between other sections, such as the drying section and the calender section, or the calender and the winding section, or even within a section itself, are also conceivable. The transfer takes place from a discharging support element, for example, a press felt or a roller surface, directly into a rope guide located outside the web path and formed at the beginning of a rope assembly.

[0003] It further relates to a machine for treating a fibrous web and a method for transferring it using at least one such transfer device according to the invention.

[0004] The fiber web to be treated can be, in particular, a paper, cardboard or tissue web.

[0005] Up to now, the relevant feed strip, e.g., a paper strip, is inserted into a cable guide located externally in the transverse direction, i.e., perpendicular to the web direction. This is typically achieved using cut-off blow tubes, blow tables, guide plates, and / or vacuum belts. However, the reliability with which the feed strip can be inserted into such an external cable guide depends heavily on the basis weight of the fiber web, the machine speed, and other parameters. In particular, the air nozzles or the flow rate must be constantly readjusted to the specific paper parameters. An embodiment of a manual transfer device for an edge strip or transfer strip into a cable arrangement is disclosed, for example, in German patent application DE 10 2007 022 393 A1.The transfer device is movably mounted on a frame and includes a drive unit which can move a deflection element arranged at the end of the transfer device projecting into the machine from a starting position to a functional position and achieves an improved deflection into the cable arrangement.

[0006] A disadvantage of the available designs of the transfer device, especially for still damp fiber webs such as after a press section, is that the efficiency of the transfer or the probability of a successful transfer is not yet sufficiently high and can be significantly below 50% success rate.

[0007] A further disadvantage, due to the greater variation in the properties of the fiber webs, is that in the event of failed transfer attempts, the operator tends to enable the transfer using available, but questionable, aids, and to enter the danger zone of the running machine section either with the aids or themselves, which poses a considerable safety risk to life and limb with the parts moving at high speeds.

[0008] The invention is based on the objective of creating an improved transfer device and an improved machine of the type mentioned above, in which the aforementioned problems are eliminated. In particular, the aim is to ensure the most reliable possible strip transfer between the relevant sections of the machine, for example, a paper machine.

[0009] The transfer device for transferring a strip, preferably an edge strip or transfer strip, within a machine for the production or treatment of the fibrous web, preferably paper, cardboard or tissue web, from a first to a further machine section, in particular from a web-discharging support element into a rope guide arranged outside the web path and formed at the beginning of a rope arrangement, which is associated with a web-receiving support element, typically comprises

[0010] • a bearing and guiding device, wherein the bearing and guiding device is connectable to a frame of the machine and,

[0011] • a support arm with a deflection element and an operating device, wherein the deflection element is arranged at the end of the support arm projecting into the machine and the operating device is arranged at the end of the support arm projecting out of the machine and,

[0012] • wherein the support arm is guided in the bearing and guide device such that the support arm is movable in a first direction and the deflection element can be positioned with a linear movement in the transverse direction of the machine and,

[0013] • wherein the deflection element is movable in a second direction, such that the deflection element can be aligned with a rotational movement, such that the strip is predominantly guided and deflected in the machine transverse direction CD when being transferred through the deflection element.

[0014] According to the invention, the deflection element in the machine direction MD is designed as a transfer profile with an L-shape extending in the support arm direction, and the transfer profile has a surface contour aligned to the strip RF in the form of an aerodynamic wing profile, in particular with a profile length L, camber C and a camber recess (CR).

[0015] Advantageously, the design of the deflection element allows the strip to be reliably captured at the beginning of the transfer process and reliably transferred or deflected in the transverse direction of CD during the transfer process.

[0016] This means that the leading edge, viewed in the direction of machine travel MD, forms an L-shape or shoe shape, wherein the L-shaped transfer profile has a long and a short L-section, both of which can be joined to each other at one end, preferably at an angle of approximately 90°. The L-shaped transfer profile is positioned at the end of the support arm projecting into the machine such that the L-shape creates a hook-like structure, enabling the strip to be captured between the long L-section and the support arm. The short section can be connected to the support arm on its first side via a bearing, for example, a swivel joint, and is fixed to the long L-section on its second side.

[0017] This design ensures a highly reliable transfer of the fiber web between different sections of the machine, e.g., a paper machine. For example, it allows for safe transfer from a press section to a single-row dryer section or to a double-row dryer section via a cable transfer system located outside the fiber web and associated with the web-receiving support element.

[0018] In the context of the present application, a transfer profile is understood to mean that the transfer profile has a defined shape or surface contour on the upper surface pointing towards the strip, which is based on the definition of the skeleton line of an aerodynamic airfoil.

[0019] The definition of the transition airfoil is derived from the generally known definition of airfoil shapes from aviation. However, in a simplified approach, no specific thickness distribution is imposed on the skeleton line; instead, only the geometry of the skeleton line is used as the contour of the upper surface of the transition airfoil.

[0020] The curved skeletal line and a straight profile chord are defined, as is usually known, between a leading edge (LE) and a trailing edge (TE) of the profile.

[0021] In the transfer profile, the leading edge LE of the profile is the edge of the transfer profile that is upstream MD in the machine direction, and the trailing edge is the edge that is downstream in the machine direction. The straight profile chord is a straight line connecting the leading edge LE and the trailing edge TE and defines the profile length L.

[0022] The transfer profile can be connected to the support arm and / or a control device via a bearing.

[0023] The transfer profile is geometrically defined externally by its skeleton line and profile chord and can form a cavity in which further supply lines can be arranged within the cavity.

[0024] The skeletal line is defined in relation to the profile chord and by a curvature as the distance between the profile chord and the skeletal line, and a curvature recession as the relative position in relation to the profile length or profile chord starting from the leading edge LE.

[0025] In an alternative embodiment, the transfer device is characterized in that the transfer profile has a profile length between 60mm and 300mm, preferably between 80mm and 200mm.

[0026] In an alternative embodiment, the transfer device is characterized in that the transfer profile has a curvature between 0mm and 50mm, preferably 10mm and 30mm.

[0027] In an alternative embodiment, the transfer device is characterized in that the transfer profile has a camber of between 15% and 85%, preferably between 20% and 65%, and particularly between 25% and 45%. In another alternative embodiment, the transfer device is characterized in that the transfer profile has a total extension in the support arm direction of between 150 mm and 400 mm, preferably between 200 mm and 350 mm. In the case of an L-shaped extension, the total extension in the support arm direction is understood to be the length of the short and long parts of the L.

[0028] In an alternative embodiment, the transfer device is characterized by the fact that the transfer profile has an L-shape and extends in the second direction at an orientation angle α less than or equal to + / -30°. 0 The vertical axis is alignable around an axis parallel to the machine direction MD, preferably a rotary bearing between the end of the support arm projecting into the machine and a free end of the short L-shaped element.

[0029] In an alternative embodiment, the transfer device is characterized in that the transfer profile has an extent in the support arm direction of less than or equal to a factor of 2.5, preferably less than or equal to a factor of 2, a width in the transverse direction CD of the strip RF.

[0030] In an alternative embodiment, the transfer device is characterized in that a nozzle arrangement is included in the area of ​​the transfer profile and that the nozzle arrangement includes at least one outlet opening for the outflow of a medium, preferably compressed air, in a first outflow direction S1.

[0031] In an alternative embodiment, the transfer device is characterized in that a further nozzle arrangement is included in the area of ​​the transfer profile and that the further nozzle arrangement includes at least one opening for the outflow of a medium, preferably compressed air, in a second outflow direction.

[0032] In an alternative embodiment, the transfer device is characterized in that the nozzle arrangement comprises several openings in the transverse direction, preferably up to 1 opening per 1 cm width in the transverse direction of the deflection element.

[0033] In an alternative embodiment, the transfer device is characterized in that the nozzle arrangement in the first outflow direction S1 and / or the further nozzle arrangement in the second outflow direction S2 each has a velocity from the openings greater than or equal to 5 times, preferably greater than or equal to 10 times, a material web speed or strip speed.

[0034] In an alternative embodiment, the transfer device is characterized in that a control device, preferably a rotary rod or a push rod, is arranged within the support arm, which extends from the operating device to the transfer profile and can be connected to both.

[0035] In an alternative embodiment, the transfer device is characterized in that the control device is a rotary rod and directly converts a rotary movement of the operating device, preferably without any reduction or gearing, into a rotary movement of the transfer profile with a constant extent, whereby an alignment angle a of the transfer profile about an axis parallel to the machine direction MD is enabled.

[0036] In an alternative embodiment, the transfer device is characterized in that the control device can be connected to a gaseous medium supply, in particular a compressed air supply, on the side facing the operating device, so that a nozzle arrangement and / or another nozzle arrangement is supplied with a medium, preferably compressed air.

[0037] In an alternative embodiment, the transfer device is characterized in that the support arm is a preferably straight, hollow square precision tube. In another alternative embodiment, the transfer device is characterized in that the support arm is designed such that it has a linear movement of less than or equal to 1 m, preferably less than or equal to 0.5 m, in the first direction within the bearing and guide assembly.

[0038] In an alternative embodiment, the transfer device is characterized in that the straight, hollow square precision tube has a cross-section of less than or equal to 100 x 100 mm, preferably less than or equal to 60 x 60 mm, and

[0039] In an alternative embodiment, the transfer device is characterized by the fact that the straight, hollow square precision tube has a length of less than or equal to 1.5 m.

[0040] In an alternative embodiment, the transfer device is characterized in that the bearing and guide device comprises at least 4 90° V-groove support rollers, and that 2 of the 90° V-groove support rollers engage each longitudinal edge of the square precision tube in such a way that the square precision tube is supported on all four sides of the cross-section.

[0041] In an alternative embodiment, the transfer device is characterized in that the bearing and guide device can be rotatably mounted at a connection point with the frame, so that the transfer device can be rotatably and positioned about the connection point with the frame in a third direction in a machine direction-transverse plane MD-CD, preferably rotatably and positionably in a rotation angle T of less than or equal to -90°, preferably from a 360° park position PO to a 270° operating position P1 , P2.

[0042] Advantageously, the third direction of movement allows the transfer device to be moved into a park position PO when not in use during normal machine operation, enabling space-saving storage away from the operating personnel's walkways. In an alternative embodiment, the transfer device is characterized by the fact that the operating device comprises a first and a second operating element, and in particular a third operating element.

[0043] In an alternative embodiment, the transfer device is characterized in that the first operating element comprises two ergonomically shaped gripping units for receiving the two hands of the operator.

[0044] In an alternative embodiment, the transfer device is characterized by the fact that the two ergonomic gripping units are designed with a distance of greater than or equal to 250mm, preferably greater than or equal to 350mm.

[0045] Advantageously, by spacing the gripping units, operating forces of less than or equal to 250N can be enabled.

[0046] In an alternative embodiment, the transfer device is characterized in that the second operating element can be connected to a control and regulation system of the machine, so that a gaseous medium supply, preferably compressed air supply, and / or a transfer process, preferably a cutting of the strip RF, can be activated.

[0047] In an alternative embodiment, the transfer device is characterized by the fact that the transfer device includes a display device.

[0048] In an alternative embodiment, the transfer device is characterized in that the display device indicates a current position of the deflection element in the first direction, preferably linear position, and / or in the second direction, preferably angular position.

[0049] In an alternative embodiment, the transfer device is characterized in that the display device stores and displays a previous position of the deflection element in the first direction, preferably linear position, and / or in the second direction, preferably angular position.

[0050] In an alternative embodiment, the transfer device is characterized in that the deflection element is designed as a transfer profile with an L-shape extension and that the transfer profile comprises a long and a short L-part, and both parts are connected at one end at substantially 90° to each other, and can be connected to the support arm at the free end of the short L-part via an enclosed pivot joint, so that the transfer profile with an L-shape extension in the CD-z plane can perform the second direction and the rotational movement.

[0051] In an alternative embodiment, the transfer device with a transfer profile having an L-shape extension is characterized in that the control device is a push rod, and converts a translational movement into a rotational movement of the deflection element, and that the transfer profile with L-shape extension has a swivel range whereby a change between a rest position and a working position is possible.

[0052] In an alternative embodiment, the transfer device with a transfer profile having an L-shape extension is characterized in that the transfer profile with L-shape extension has a total extension over the L-shape, an extension in MD and a thickness.

[0053] In an alternative embodiment, the transfer device with a transfer profile having an L-shape is characterized in that the transfer profile with the L-shape is designed as a hollow profile with a profile length L in MD. The contour of the hollow profile is defined by the skeleton line and the profile chord between the leading and trailing edges. In another alternative embodiment, the transfer device with a transfer profile having an L-shape is characterized in that the nozzle arrangement in its first outflow direction S1 is oriented in the machine direction MD and away from a surface of the transfer profile, and that the outflow direction S1 has an outflow angle β, particularly with respect to an imaginary tangent to the surface of the transfer profile at an outflow opening, of less than or equal to +30°, preferably less than or equal to +20°, and greater than 0°.

[0054] Advantageously, by aligning the nozzle arrangement as tangentially as possible to the curved profile, the air can be slowed down and swirled as little as possible, which improves both the low-pressure area on the curved profile and the flow velocity of the exiting air.

[0055] Furthermore, a uniform deflection of the airflow is sought in order to keep the pressure range as constant as possible.

[0056] In an alternative embodiment, the transfer device is characterized in that the nozzle arrangement is integrated into the transfer profile, such that the transfer profile and the nozzle arrangement are manufactured from one component, preferably by an additive or 3D printing manufacturing process.

[0057] Advantageously, an additive or 3D printing manufacturing process can be used to create a transfer profile in an L-shape with a complex internal and external design, as well as integrated functions such as the nozzle arrangement and supply lines arranged within the transfer profile, in a particularly efficient manner.

[0058] In an alternative embodiment, the transfer device is characterized in that the nozzle arrangement is positioned at a location greater than or equal to 5% to less than or equal to 40% of the profile length L from the leading edge LE to the trailing edge TE of the transfer profile. In another alternative embodiment, the transfer device with an L-shaped transfer profile is characterized in that the further nozzle arrangement is oriented in its second outflow direction S2, preferably in a CD-z plane, opposite to the transverse direction and in the vertical direction.

[0059] In an alternative embodiment, the transfer device with a transfer profile of constant extent and / or L-shape extent is characterized by the fact that the transfer profile is manufactured using an additive manufacturing process, preferably a 3D printing process.

[0060] In an alternative embodiment, the transfer device with an L-shaped transfer profile is characterized by the fact that the transfer profile is made of a pressure-resistant material with a pressure resistance of up to 5 bar.

[0061] In an alternative embodiment, the transfer device with a transfer profile of constant extent and / or L-shape extent is characterized by the fact that the transfer profile is made of a non-swelling material.

[0062] In an alternative embodiment, the transfer device with a transfer profile of constant extent and / or L-shape extent is characterized by the fact that the transfer profile is made of an embrittlement-free material.

[0063] Likewise, a machine for the production and / or treatment of a fibrous web with at least one transfer device according to the invention is claimed.

[0064] In an alternative embodiment, the machine is characterized by the fact that a transfer device with a deflection element is designed as a transfer profile with an L-shape extension in front of a path-receiving support element.

[0065] In an alternative embodiment, the machine is characterized in that the transfer device is arranged on a web-receiving support element, preferably a roller and / or a drying cylinder and / or a wire cutter, in an angular position y2 between 270° and 360°, preferably in a position between 290° and 340°.

[0066] In an alternative embodiment, the machine is characterized in that the strip or web of material to be transferred has a moisture content of more than 45%, in particular more than 55%, preferably more than 65%.

[0067] In an alternative embodiment, the machine is characterized in that the transfer device is arranged immediately after a forming section and the strip to be transferred is taken from a forming section.

[0068] In an alternative embodiment, the machine is characterized in that the transfer device is arranged immediately after a press section and the strip to be transferred is taken from a press section.

[0069] In an alternative embodiment, the machine is characterized in that the transfer device is arranged within and / or immediately after a drying section and the strip to be transferred is taken from a drying cylinder of the drying section.

[0070] In an alternative embodiment, the machine is characterized in that the transfer device is arranged immediately after a drying section and the strip to be transferred is taken from a last drying cylinder of an area of ​​the drying section which has only one row of drying cylinders.

[0071] A method for transferring a strip RF, preferably an edge strip RF or transfer strip RF, within a machine for producing or treating the fibrous web F, preferably paper, cardboard or tissue web, using a transfer device according to claim 1, wherein a single operator a) moves the transfer device from a park position PO to a first functional position P1, and b) positions the transfer profile in a first direction with a linear movement in the transverse direction CD of the machine to a second functional position P2, and c) aligns the transfer profile in a second direction with a rotational movement to receive the strip in a third functional position P3, and d) activates a gaseous medium supply, preferably a compressed air supply, for removing and / or receiving the strip.and e) performs a change in the position of the first direction of the transfer device (10) in the fourth operating position P4 after activation of gaseous medium supply, preferably compressed air supply, until the strip is picked up by the transfer profile and transferred into a cable guide associated with the web-receiving support element, arranged outside the web path and formed at the beginning of a cable arrangement.

[0072] An alternative embodiment of the method is characterized in that a single operator, after initially grasping the operating device with both hands, positions and aligns the transfer profile from a safe working area outside the web path, and that the gaseous medium supply, preferably compressed air, is activated directly at the operating device. The solution according to the invention is not limited to a specific transfer situation. It can be used to transfer an edge strip between a press section and a first element of a dry section, between individual elements of the dry section, and / or between a dry section and a downstream processing unit. Due to its compact size, even very confined transfers are possible.

[0073] The solution according to the invention is explained below with reference to figures.

[0074] Figures 1a to 1d show, in schematically simplified top views, the basic structure of a transfer device in a machine for the production of fibrous webs and the basic principle of the functional positions P1 to P4 and parking position PO;

[0075] Figures 2a, 2b, 2c show the transfer device from Figures 1a to 1d in simplified side views and three functional positions P2 to P4;

[0076] Figures 3a, 3b, 3c show a side and top view as well as a section of the hollow profile through the deflection element designed as a transfer profile with L-shape extension;

[0077] Figure 4 shows a specific installation situation of a transfer device during the transfer of a strip into a cable guide of a further machine section, which is assigned to a web-receiving support element outside the fiber web running path.

[0078] To clarify the individual directions, a higher-level Cartesian coordinate system is used in the figures, which allows the individual directions to be illustrated. The x-direction represents the longitudinal extent, also known as the machine direction (MD). The y-direction corresponds to the direction perpendicular to the machine direction and is called the cross-direction (CD), while the z-direction corresponds to the vertical direction.

[0079] Figures 1a to 1d illustrate, in a schematically simplified representation, the basic structure of a transfer device 10 designed according to the invention, with a transfer profile having an L-shape extending in the support arm direction in a machine 1 for transferring a strip RF in its operating positions P1 to P4 and its parked position PO. The transfer device 10 is shown at least from a top view of the MD-CD plane from the z-direction.

[0080] Figures 1a to 1d show the transfer device 10 with a deflection element 8 which is designed as a transfer profile with L-shape extension 81 in the functional positions P1 (Figure 1a), P2 / P3 (Figure 1b) and P4 (Figure 1c) each in a top view of an MD-CD plane from the z-direction and a side view of an MD-z plane opposite the CD direction, as well as in Figure 1a in a side view of an MD-z plane in the CD direction.

[0081] In Figure 1 a, a side view is additionally shown by a dividing line to the left of the top view, showing a view of the MD-z plane in the CD direction for the representation of the operating device 60 at the end of the support arm 21 projecting from the machine.

[0082] In Figures 1a, 1b and 1c, a side view is additionally shown by a dividing line to the right of the top view, showing a view of the MD-z plane opposite the CD direction, for a representation of the deflection element 8 on the end of the support arm 21 projecting into the machine 1.

[0083] For the transfer, the strip RF is transferred from a track-discharging support element 3 to a track-receiving support element 4 of the machine 1 following the functional positions P1 , P2 and P4 one after the other.

[0084] The functional position or park position PO, shown only in Figure 1d, is assumed before and after a transfer process and represents a so-called park position PO of the transfer device 10 during normal operation of the machine 1. In the illustrated embodiment of the transfer device 10, the support elements 3, 4 are simplified as rollers or cylinders; however, the support elements 3, 4 can also be screens or sieves that are guided over or between deflection elements such as rollers or cylinders.

[0085] The transfer device 10 comprises a bearing and guide device 34, a support arm 21, a deflection element 8 and an operating device 60. The deflection element 8 is located at the end of the support arm 21 projecting into the machine, the operating device 60 is located at the opposite end of the support arm 21, and the bearing and guide device 34 is located between them.

[0086] The bearing and guiding device 34 can be connected to a frame 6 or a foundation 6 of the machine 1 and is rotatably mounted at a connection point, so that the transfer device 10 can be rotated about the connection point with the frame 6 in a third direction 44 in a machine running direction-transverse direction plane (MD-CD).

[0087] The transfer device 10 comprises a support arm 21 with a deflection element 8, wherein the deflection element 8 is movably arranged at the end of the support arm 21 projecting into the machine 1. The support arm 21 is guided in the bearing and guide device 34 and is movable in a first direction 40, whereby the deflection element 8 at the end of the support arm 21 projecting into the machine 1 can thus be directly positioned by a linear movement 40 in the transverse direction CD of the machine 1.

[0088] The support arm 21 can be designed as a square precision tube, thus enabling easy movement in the bearing and guide device 34 while maintaining high rigidity free from excessive deflection and twisting in the functional positions P2 and P4 extended into the machine 1, which are shown in Figure 1b and 1c.

[0089] A stable position of the deflection element 8 relative to the support elements is necessary for reliable transfer. For example, the deflection element 8, when positioned in machine 1, must exhibit little to no tendency to flutter or vibrate, as the distances to the support elements and the strip RF are very small and contact could cause the strip RF to tear and / or damage the components.

[0090] Two, preferably adjustable, stop elements 70 can be provided on the support arm 21, which specify an end position for the operating personnel in the functional position P1, which is completely moved out of the machine 1, and / or in the functional position P2, which is completely moved into the machine 1.

[0091] Additional stop elements 71 can be provided on the frame 6 of the machine 1. These additional stop elements 71 define end positions of the third direction 44, for example, the parking position PO or the operating positions P1 and P2.

[0092] Furthermore, the deflection element 8 is movable in a second direction 42, such that the deflection element 8 can be aligned with a rotational movement 42 in an orientation angle a, and the strip RF is predominantly guided when passing through the deflection element 8.

[0093] Furthermore, a display device 68 for the alignment of the deflection element 8 in the machine 1 can be provided on the support arm 21, the operating device 60, or the bearing and guide device 34. For example, a display showing the linear position in the CD direction and / or the alignment angle α is conceivable.

[0094] The operating device 60, which is arranged at the end of the support arm 21 projecting from the machine, is designed for manual operation by a single operator. It comprises a first operating element 62 and a third operating element 66.

[0095] Figure 1a shows the transfer device 10 in the operating position P1, after it has been rotated from the parked position PO (Figure 1d) by essentially +90° in a rotary movement 44 in the MD-CD plane about the connection point between the bearing and guide device 34 and the frame 6. The operator grasps the operating device 60 and, in the third direction of movement 44, rotates the transfer device 10, which is in the operating position or parked position PO, into the operating position P1 about a mounting point of the bearing and guide device 34 with the frame 6. The operating position P1 is defined as the support arm 21 being fully extended from the machine 1.

[0096] As shown in Figure 1b and Figure 2a, the operating position P2 is set following the operating position P1 shown in Figure 1a. In operating position P2, the deflection element 8 is positioned in the machine 1 in the CD direction by a linear movement 40 behind the strip RF running from the supplying support element 3 to the receiving support element 4. This movement is performed by the operator, who holds the first control element 62 on the operating device 60 with both hands. The deflection element 8 is positioned in its maximum extension in the support arm direction behind the strip RF. Optionally, it may be necessary for the deflection element 8 to project into the machine 1 as far as the stop element 70, as shown in Figure 1b.

[0097] Following functional position P2, functional position P3 is shown in Figure 2b. In functional position P3, the operator actuates the control device 60 by a rotary movement (not shown) or by a third control element 66 with a translational movement 42. The operator thus positions the deflection element 8 essentially in a second direction 42, i.e., a rotational movement 42 about an axis parallel to the MD direction. The control device 60 initiates a rotational movement 42 about an alignment angle α, and a control device 82 arranged in the support arm 21, preferably a rotary rod 82 or a push rod 82, presets the alignment angle α about an axis parallel to the machine direction MD at the deflection element 8.Once the deflection element 8 has reached a suitable position for transferring the strip, the operator, who still holds both hands on the first control element 62, activates both nozzle arrangements 84 and 86 encompassed in the deflection element 8 by actuating a second control element 64, for example with the thumb of one hand.

[0098] The operator must now, by means of a linear movement in the first direction 40 (Figure 1c and 2c - functional position P4), detach or capture the strip RF from the dispensing support element 3 through the further nozzle arrangement 86 and the activated airflow S2 from the nozzles and guide it over the transfer profile 81 encompassed in the deflection element 8 and the air cushion generated on the surface of the transfer profile by the nozzle arrangement 84, as well as control the strip RF in the direction of the cable shear 26 assigned to the receiving support element 4, which is arranged outside the track path, until the cable shear 26 has securely taken over the strip RF.

[0099] After the strip RF has been safely transferred into the wire cutter 26, the operator performs the steps just described in reverse order until the operating position P1 is reached. The operator can now deactivate the nozzle assemblies 84 and 86 by pressing or releasing the second control element 64.

[0100] After reaching the operating position P1, the operator, who still has both hands gripping the first control element 62, can signal and / or activate the transfer process in the machine control 90 by actuating the third control element 66, for example with the thumb of one hand. This then triggers the widening of the transferred strip RF and thus the transfer of the entire web width of the fiber web.

[0101] The operator can move the transfer device from the functional position P1 before or after the strip RF has been moved to the fiber web F into the parking position PO by performing a reverse operation.

[0102] The ergonomically designed operating device 60 with three integrated operating elements 62, 64, 66 enables efficient and safe manual transfer of the RF strip even in confined spaces within the machine 1.

[0103] Furthermore, the design ensures that the operator must keep both hands on the operating device 60 and therefore cannot and does not need to interact with the machine 1. Thus, the operator's safety is guaranteed under all circumstances.

[0104] Figures 3a to 3c show in detail a possible embodiment of the deflection element 8 as a transfer profile with L-shape extension 81.

[0105] Figure 3a shows the transfer profile with L-shape extension 81 in a view in the machine running direction MD.

[0106] Figure 3b shows the transfer profile with L-shape extension 81 in a view in the transverse direction CD.

[0107] Figure 3c shows a section through the hollow profile of the L-shaped transfer profile with extension 81. The hollow profile is oriented against the machine direction MD, but due to its curved L-shape, it can be found in various positions CD, z in space.

[0108] Figure 3a shows a schematic cross-section in the CD-z plane through the deflection element 8 arranged at the end of the support arm 21 projecting into the machine. The deflection element 8 is shown in the functional position P3 and comprises a transfer profile 81 with an L-shape extending in the direction of the support arm. The transfer profile 81 with an L-shape extending in the direction of the support arm comprises a short L-section 89 and a long L-section 88, which are arranged at an angle of approximately 90° to each other on one side.

[0109] The deflection element is designed as a transfer profile with an L-shape extension and that the transfer profile comprises a long and a short L-part, and both parts are connected at one end at substantially 90° to each other, and at the free end of the short L-part can be connected to the support arm 21 via an enclosed bearing 91, so that the transfer profile 81 with an L-shape extension in the CD-z plane can perform the second direction 42 and the rotational movement.

[0110] Figure 3b shows a schematic cross-section in the MD-z plane through the deflection element 8 from Figure 3a already explained; the deflection element 8 includes a further nozzle arrangement 86 which enables an airflow in a second outflow direction S2.

[0111] The transfer profile 81 with L-shape extension in the support arm direction is shaped as an aerodynamic profile shape in the path direction MD, which is shown in detail in Figure 3c, wherein, for the design of the exact profile shape for the desired aerodynamic properties, the profile has a profile length L, a camber C with corresponding camber recess CR, in relation to the connecting line between the leading edge LE and the trailing edge TE.

[0112] Furthermore, the transfer profile 81, with its L-shape extending in the direction of the support arm, comprises, in the region of its leading edge LE, which points opposite to the machine's direction of travel, a nozzle arrangement 84 with several outlet openings or nozzles extending over its entire length. The nozzle arrangement 84, in its outflow direction S1 relative to an intersection point of the nozzle arrangement with the chord line of the transfer profile 81 extending in the direction of the support arm, directs the air either away from the transfer profile or towards the strip RF with an outflow angle β of greater than 0° to less than or equal to 30°, preferably less than or equal to +20°, relative to an imaginary tangent to the surface of the transfer profile at an outlet opening. By selecting the outflow angle β, it is possible to control the air cushion and the turbulence on which the strip RF slides over the transfer profile 81.

[0113] Furthermore, the transfer profile 81 with L-shape extending in the support arm direction comprises, in the area of ​​its side of the long L-section 88 facing opposite to the machine transverse direction CD, a further nozzle arrangement 86 with one or more outlet openings or nozzles extending over the length of the side. The further nozzle arrangement 86 is tangential in its outlet direction S2 with respect to the orientation of the long L-section.

[0114] The transfer profile 81 with L-shape extension in the support arm direction forms a cavity through the profile chord and the surface contour in which supply lines of the nozzle arrangement can advantageously be arranged.

[0115] The nozzle arrangement 84 and / or the further nozzle arrangement 86 are / are integrated into the transfer profile 81 such that the transfer profile and the nozzle arrangement are manufactured from one component, preferably by an additive or 3D printing manufacturing process.

[0116] Advantageously, an additive or 3D printing manufacturing process can be used to create a transfer profile in an L-shape with a complex internal and external design, as well as integrated functions such as the nozzle arrangement and supply lines arranged within the transfer profile, in a particularly efficient manner.

[0117] The control device 82 (not shown) can be configured as a pressure line and can be connected to a gaseous medium supply (not shown) or a compressed air supply on the operating device side. On the side opposite the overprofile 81, it can be connected to the nozzle arrangement 84 and / or the further nozzle arrangement.

[0118] Figure 4 shows an exemplary arrangement of the transfer device 10 in a machine 1 between a web-discharging support element 3 and a web-receiving support element 4. The sketched arrangement can be located within and / or between different machine sections of the machine 1. The transfer device 10 is equipped with a deflection element 8 which is designed as a transfer profile 81 with an L-shaped extension.

[0119] The transfer device 10 with a transfer profile 81 having an L-shaped extension is arranged on the web-receiving support element 4 at an angular position y2 between 270° and 360°, preferably 290° and 340°. For example, a transfer can be arranged in the so-called "wet section" of the machine 1 between the forming section and the press section, between one press section and another press section, between the press and dry sections, within a dry section and / or at the end of a dry section.

[0120] Furthermore, the transfer device 10 can be arranged immediately after a forming section and the strip RF to be transferred can be taken from a forming section, which means that the web-discharging support element 3 can be a forming screen and the web-receiving support element 4 can be a press felt of a press section.

[0121] Furthermore, the transfer device 10 can be arranged directly after a press section and the strip RF to be transferred can be taken from a press section, which means that the web-discharging support element 3 can be a press felt and the web-receiving support element 4 can be, for example, a drying cylinder or a drying screen.

[0122] Furthermore, the transfer device 10 can be arranged within and / or immediately after a drying section and the strip RF to be transferred can be taken from a drying cylinder 3 of the drying section, which means that the web-discharging support element 3 can be a drying screen in addition to the drying cylinder and the web-receiving support element 4 can be a drying cylinder or a drying screen of another drying group or drying section.

[0123] Furthermore, the transfer device 10 can be arranged directly after a drying section, and the strip RF to be transferred can be taken from a last drying cylinder 3 of a section of the drying section that has only one row of drying cylinders. This means that the web-discharging support element 3 is a drying cylinder, and the web-receiving support element 4 is arranged, for example, in a coating section or winding unit. Due to its compact design and the parking position PO, it can be used virtually anywhere, preferably in confined spaces where a fully automated solution is not feasible due to space constraints or transfer reliability concerns.

[0124] The discharge support element 3 is further shown as a discharge roller with or without a covering, and the receiving support element 4 as a roller, cylinder, or drying cylinder. The receiving support element 4 can be designed with or without additional covering.

[0125] Figure 4 shows the arrangement in a subsequent functional position P4. The strip RF has already been received by the receiving support element 4 and the strip RF experiences a tension which stretches it to the strip RFII between the track-discharging 3 and track-receiving support element 4.

[0126] The gaseous medium supply, for example with compressed air, to the nozzle arrangement 84 and the further nozzle arrangement 86 is activated by the operator by actuating the second control element 64.

[0127] The further nozzle arrangement 86 detaches the strip RF from the web-receiving support element 4 by means of the outflowing compressed air in the outflow direction S2. At the same time, the nozzle arrangement 84, which is supplied with compressed air, forms an air cushion optimized with respect to turbulence and flow resistance over the transfer profile 81 for guiding the strip RF over the transfer profile 81.

[0128] In operating position P4 of the transfer device 10, the tensioned strip RF II is transferred into a rope guide 26, also known as a rope shear, located outside the track path and associated with the track-receiving support element 4. This guide is formed at the beginning of a rope assembly. To accomplish this, the operator moves the control device 60 against the machine's transverse direction CD until the strip RF or RF II slides over the transfer profile 81. The operator then positions the transfer device further against the machine's transverse direction CD until the strip RF II is engaged by the rope shear 26 and transferred through the subsequent machine section. In a further intermediate step, the tensioned and transferred strip RF II is deflected by the transfer device 10, which has an L-shaped transfer profile 81, through operating positions P1 to P4 into the rope shear 26, against the transverse direction CD.Only then, by actuating the third control element 66 on the control device 60, is the further transfer device activated.

[0129] 10 with a transfer profile with L-shape extension 81 in the higher-level machine control 90 a widening is activated, whereby the tensioned strip RF

[0130] 11 is widened to the fiber web F in the transverse direction CD and is continued in the following machine section.

[0131] List of reference signs

[0132] 1 machine

[0133] 6 frame

[0134] 8 Deflection element

[0135] 10 Transfer device

[0136] 21 Support arm

[0137] 26 Rope guidance

[0138] 34 Storage and guidance equipment

[0139] 40 First direction of movement, linear movement in CD

[0140] 42 Second direction of movement, rotational movement of the deflection element

[0141] 44 Third direction of movement, rotational movement from parking position

[0142] 46 Direction of operation of the third control element

[0143] 60 Operating device

[0144] 62 first control element

[0145] 64 second control element

[0146] 66 third control element

[0147] 68 Display device

[0148] 70 Stop element

[0149] 71 further stop element 80 transfer profile with constant extension

[0150] 81 Transfer profile with L-shape extension

[0151] 82 Control device

[0152] 84 Nozzle arrangement

[0153] 86 additional nozzle arrangements

[0154] 88 long section of the transfer profile with L-shape extension

[0155] 89 short part of the transfer profile with L-shape extension

[0156] 90 Control and regulating device

[0157] 91 Rotary bearing of the transfer profile with L-shape extension on the support arm a Alignment angle of the deflection element ß Outflow angle from a nozzle arrangement

[0158] T Rotation angle of the bearing and guide device y Angular position relative to the center point of the support element

[0159] C profile curvature

[0160] CR profile camber reserve

[0161] Profile thickness

[0162] F Fibre web

[0163] L profile length

[0164] LE profile front edge (leading edge)

[0165] PO - P4 Functional positions

[0166] RF stripes

[0167] RF II transferred strip RF under tension between both support elements

[0168] 51 First outflow direction nozzle arrangement

[0169] 52 Second outflow direction nozzle arrangement

[0170] TE profile trailing edge (Trailing Edge)

[0171] MD Machine direction of travel

[0172] CD machine transverse direction z vertical direction

Claims

1. Transfer device (10) for transferring a strip (RF), preferably an edge strip (RF) or transfer strip (RF), within a machine for the production or treatment of the fibrous web (F), preferably paper, cardboard or tissue web, from a web-discharging support element (3) into a rope guide (26) arranged outside the web path and formed at the beginning of a rope arrangement, associated with a web-receiving support element (4), wherein the transfer device (10) • comprises a bearing and guiding device (34), wherein the bearing and guiding device (34) is connectable to a frame (6) of the machine and, • comprising a support arm (21 ) with a deflection element (8) and an operating device (60), wherein the deflection element (8) is arranged at the end of the support arm (21 ) projecting into the machine and the operating device (60) is arranged at the end of the support arm (21 ) projecting out of the machine and, • wherein the support arm (21 ) is guided in the bearing and guide device (34) such that the support arm (21 ) is movable in a first direction (40) and the deflection element (8) is positionable with a linear movement in the transverse direction (CD) of the machine and, • wherein the deflection element (8) is movable in a second direction (42) such that the deflection element (8) can be aligned with a rotational movement (42) in such a way that the strip (RF) is predominantly guided and deflected in the machine transverse direction CD when being transferred through the deflection element (8), characterized in that the deflection element (8) is designed in the machine direction (MD) as a transfer profile (81 ) with an L-shape extension in the support arm direction, and that the transfer profile (81 ) has a surface contour in the form of an aerodynamic airfoil profile oriented towards the strip (RF).

2. Transfer device (10) according to claim 1, characterized in that the transfer profile (81) has an L-shape extending in the second direction (42) at an alignment angle (a) less than or equal to + / -30°. 0 is alignable to the vertical about an axis parallel to the machine running direction (MD), preferably a rotary bearing (90) between the end of the support arm (21) projecting into the machine and a free end of the short L-shaped element (89).

3. Transfer device (10) according to claim 1 or 2, characterized in that the transfer profile (81 ) with L-shape extension has an overall extension over the L-shape, beginning at the free end of the short L-part (89) and ending at the free end of the long L-part (88), and that the transfer profile with L-shape extension (81 ) is designed over its entire extension as a continuous hollow profile with a profile length (L) in the MD direction.

4. Transfer device (10) according to one of the preceding claims, characterized in that the transfer profile (81 ) has a profile length (L) between 60 mm and 300 mm, preferably between 80 mm and 200 mm, and that the transfer profile (81 ) has a curvature (C) between 10 mm and 50 mm, preferably 15 mm and 30 mm, and that the transfer profile (81 ) has a curvature recession (CR) between 15% and 85%, in particular 20% and 65%, preferably 25% and 45%, and that the transfer profile (81 ) has a total extent in the support arm direction between 150 mm and 400 mm, preferably between 200 mm and 350 mm.

5. Transfer device (10) according to one of the preceding claims, characterized in that the transfer device (10) comprises a nozzle arrangement (84) in the area of ​​the transfer profile (81) and that the nozzle arrangement (84) comprises at least one outlet opening for the outflow of a medium, preferably compressed air, in a first outflow direction (S1).

6. Transfer device (10) according to claim 5, characterized in that the nozzle arrangement (84) is integrated into the transfer profile (81) such that the transfer profile (81) and the nozzle arrangement (84) are made from one component, preferably by an additive or 3D printing manufacturing process, and that the nozzle arrangement (84) is arranged at a position greater than or equal to 5% to less than or equal to 40% of the profile length (L) from the front edge (LE) to the rear edge (TE) of the transfer profile (81).

7. Transfer device (10) according to claim 5 or 6, characterized in that the nozzle arrangement (84) of the transfer profile with L-shape extension (81 ) is oriented in its first outflow direction (S1 ) in the machine running direction (MD) and away from a surface of the transfer profile and that the outflow direction (S1 ) has an outflow angle (β), in particular with respect to an imaginary tangent on the surface of the transfer profile at an outflow opening, of less than or equal to +30°, preferably less than or equal to +20°, and greater than 0°.

8. Transfer device (10) according to one of the preceding claims, characterized in that a further nozzle arrangement (86) is included in the area of ​​the transfer profile (81) and that the further nozzle arrangement (86) comprises at least one outlet opening for the outflow of a medium, preferably compressed air, in a second outflow direction (S2).

9. Transfer device (10) according to claim 8, characterized in that the further nozzle arrangement (86) is oriented in its second outflow direction (S2) opposite to the transverse direction (CD) and in the vertical direction (z).

10. Transfer device (10) according to one of the preceding claims, characterized in that a control device (82), preferably a push rod (82), is arranged within the support arm (21), which extends from the operating device (60) to the transfer profile (81) and can be connected to both.

11. Transfer device (10) according to claim 10, characterized in that the control device (82) can be connected to a gaseous medium supply, in particular a compressed air supply, on the side facing the operating device (60), so that a nozzle arrangement (84) and / or a further nozzle arrangement (86) included in the transfer profile (81) is supplied with a medium, preferably compressed air.

12. Transfer device (10) according to one of the preceding claims, characterized in that the bearing and guide device (34) can be rotatably mounted at a connection point with the frame (6), so that the transfer device (10) can be rotatably and positionably about the connection point with the frame (6) in a third direction (44) in a machine direction-transverse plane (MDCD), preferably rotatably and positionably in a rotation angle (T) of less than or equal to -90°, preferably from a 360' parking position (PO) to a 270° operating position.

13. Machine for the production and / or treatment of a fibrous web with at least one transfer device (10) according to one of the preceding claims.

14. Method for transferring a strip (RF), preferably an edge strip (RF) or transfer strip (RF), within a machine for producing or treating the fibrous web (F), preferably paper, cardboard or tissue web, using a transfer device (10) according to claim 1, wherein a single operator a) moves the transfer device (10) from a park position (PO) to a first operating position (P1), and b) positions the transfer profile (81) in a first direction (40) with a linear movement in the transverse direction (CD) of the machine to a second operating position (P2), and c) aligns the transfer profile (81) in a second direction (42) with a rotational movement to receive the strip (RF) in a third operating position (P3), and d) activates a gaseous medium supply, preferably a compressed air supply, for removing and / or receiving the strip (RF).and e) performs a change in the position of the first direction (40) of the transfer device (10) in the fourth operating position (P4) after activation of gaseous medium supply, preferably compressed air supply, until the strip (RF) is picked up by the transfer profile (81) and transferred into a rope guide (26) formed at the beginning of a rope arrangement and associated with the web-receiving support element (4), arranged outside the web path.

Images