Device for tilting substrate rolls

Abstract

Device (1) for moving a roller (2) with a longitudinal axis (3) from a horizontal position, in which the longitudinal axis (3) of the roller (2) is in a horizontal orientation, to a vertical position, in which the longitudinal axis (3) of the roller (2) is in a vertical orientation, or vice versa, wherein the device (1) comprises a lower part (5), a pivoting mechanism (6) and a pivotable upper part (7), wherein the upper part (7) comprises a receiving fork (8) with two support arms (9) and a support surface (10) arranged substantially perpendicular to the receiving fork (8), wherein the upper part (7) is pivotable by substantially 90° for moving the roller (2) from the horizontal position to the vertical position or vice versa, characterized in thatthat when the lying roll (2) is picked up from a horizontal support (4) or when the roll (2) is placed in the lying position on the horizontal support (4), the picking fork (8) is inclined to the horizontal support (4) by an angle α.

Description

[0001] The invention relates to a device for moving a roll having a longitudinal axis from a lying position, in which the longitudinal axis of the roll is in a horizontal orientation, into a standing position, in which the longitudinal axis of the roll is in a vertical orientation, or vice versa, wherein the device comprises a lower part, a pivoting mechanism and a pivotable upper part, wherein the upper part comprises a receiving fork with two support arms and a storage surface arranged substantially at right angles to the receiving fork, wherein the upper part can be pivoted through substantially 90° for moving the roll from the horizontal position to the vertical position or vice versa.

[0002] Tilting chairs are known from the state of the art in the graphic arts industry. These tilting chairs can be used to move substrate rolls from a standing position, in which the longitudinal axis and thus the rotational axis of the substrate roll is aligned vertically, to a lying position, in which the longitudinal axis of the substrate roll is aligned horizontally, and vice versa. This is necessary, for example, when the rolls are usually delivered in a standing position or stored in an intermediate storage area in a standing position and must be brought into the lying position for unwinding in a roll changer, also in order to be able to carry out the gluing preparation required for the roll changer. Substrate rolls are also referred to simply as rolls below.

[0003] However, it may also be necessary to move unused rolls, which were held lying down at the printing press, or leftover rolls with a reduced outer diameter, which have already been unwound in a lying position in the printing press, into a vertical position for further transport or temporary storage.

[0004] For this purpose, either forklifts with swiveling grippers are used, or, especially in the case of high throughput of rolls in a short time, tilting chairs are used, which can also be integrated into a conveying system such as a belt conveyor system.

[0005] In this process, a roll is either transported into the tilting chair in an upright position, pivoted 90° into a horizontal position, and then conveyed out of the tilting chair. However, it is also possible for a roll to be transported into the tilting chair in a horizontal position, pivoted 90° into a vertical position, and then conveyed out of the tilting chair.

[0006] However, when inserting the horizontal rolls into the tilting chair or when removing the horizontal rolls from the tilting chair, the problem can arise that the outer surface of the roll is moved along the two receiving forks and that the roll is thereby at least partially damaged.

[0007] To avoid this problem, tilting chairs are known from the prior art, whose transport forks can be lowered below the transport level for loading the roller by, for example, a belt conveyor or plate conveyor, but this requires a complex and therefore expensive construction of the tilting upper part and / or necessary recesses in the transport level, which is also associated with additional costs and complex safeguarding against the associated tripping hazard.

[0008] The invention is therefore based on the object of creating a solution which makes it possible to ensure a substantially contact-free sliding or removal of a lying substrate roll even with a technically simple and thus economically producible design of the upper part of a tilting chair.

[0009] The object is achieved according to the invention in that when picking up a lying roll from a horizontal support or when placing a roll in the lying position on the horizontal support, the receiving fork is inclined to the horizontal support by an angle α.

[0010] This design has the advantage that the tiltable upper part of the tilting chair, which includes the receiving fork, can be designed in a technically simple and thus cost-effective manner, that no recesses in the floor level with the necessary safeguards etc. are required, and that a lying roll can still be pushed onto or out of the two support arms of the receiving fork without contact, so that no damage to the roll can occur.

[0011] In addition, no sliding elements, such as roller ball elements on the support arms of the receiving fork, are required, which is why such a tilting chair can also be designed to be mobile without additional securing of the roller.

[0012] According to one embodiment of the invention, the receiving fork is firmly connected to the storage surface and encloses an angle β of 90°.

[0013] Such a design has the advantage that the upper part can be manufactured very simply and therefore very cost-effectively from a technical point of view due to the lack of required adjustment elements and also requires correspondingly low maintenance.

[0014] According to a further embodiment of the invention, when picking up the roll from the horizontal support, at least at the beginning of the pivoting or at the latest before the roll is placed on the horizontal support, the upper part is rotatable about a pivot point which is arranged at a contact point of the roll with the storage surface or outside the roll and / or the upper part.

[0015] This design has the advantage that the upper part of the device is rotated in such a way that the outer surface of the roll initially rests on the support arms of the receiving fork over its entire length and that, at the same time, the end of the roll rests on the support surface of the pivoting upper part as long as the roll is still in the horizontal position. By the end of the roll being in full contact with the support surface of the pivoting upper part, it is ensured that when the roll is moved into the vertical position, the end of the roll is not in point contact with the support surface. This would lead to a displacement of the outer layers of the roll when the roll is placed in a vertical position and thus to damage the roll and / or to the roll suddenly slipping or tipping over so that the end rests fully on the support surface.

[0016] According to a further embodiment of the invention, the upper part can be pivoted by means of a four-bar chain comprising the pivoting mechanism.

[0017] Such a design has the advantage that the kinematics of the above-mentioned tilting movement can be carried out with little technical effort and thus at very low cost only after the roll has been completely placed on the support arms and the front side of the roll has been completely placed on the storage surface.

[0018] According to a further embodiment of the invention, the receiving fork is designed to be pivotable relative to the storage surface, or a variable angle β in the range of greater than or equal to 90° is included between the receiving fork and the storage surface.

[0019] Such a design has the advantage that the angle α between the support arms of the receiving fork and the horizontal can be achieved without tipping over the entire upper part including the support surface.

[0020] According to a further embodiment of the invention, when picking up the roll from the horizontal support or when placing the roll on the horizontal support, the support surface of the upper part is aligned in a vertical position and an angle β of more than 90° is included between the receiving fork (8) and the support surface (10).

[0021] This design has the advantage that, before the roll is moved from a horizontal position to a vertical position, the receiving fork of the device is rotated in such a way that the outer surface of the roll initially rests on the support arms of the receiving fork over its entire length and that, at the same time, the end face of the roll rests on the support surface of the pivotable upper part as long as the roll is still in the horizontal position.The complete contact of the end of the roll with the storage surface of the pivoting upper section ensures that the end of the roll is not in point contact when the roll is moved into the vertical position. This would cause the outer layers of the roll to shift when the roll is placed in a vertical position, resulting in damage to the roll and / or a sudden slipping or tipping of the roll so that the end rests completely on the storage surface. When moving a roll from a vertical position to a horizontal position, the process is reversed so that when the upper section is tilted, the roll is supported on both the support arms and the storage surface over its entire length.

[0022] According to a further embodiment of the invention, the storage area includes a conveying device.

[0023] This design has the advantage that the device can be integrated into an automatic conveying device such as a plate conveyor, so that the standing rolls can be automatically pushed onto the storage surface or transported away from the storage surface.

[0024] According to a further embodiment of the invention, the device is arranged to be movable or stationary.

[0025] This design offers the greatest possible flexibility, since the device for tilting the rolls can either be integrated into a preferably automated roller conveyor device, or with a movable device the rolls can not only be tilted, but also transported with the device or picked up or set down by the device at any desired location.

[0026] According to a further embodiment of the invention, the horizontal support is designed as a flat storage surface, as a trolley or as a conveyor belt or as a mobile transport device.

[0027] This design offers the greatest possible flexibility, since the device for tilting the rolls can either be integrated into a preferably automated roller conveyor device, or with a movable device the rolls can not only be tilted, but also transported with the device or picked up or set down by the device at any desired location.

[0028] Preferred developments of the invention will become apparent from the dependent claims and the following description. Various embodiments of the invention are explained in more detail, without being limited thereto, with reference to the drawings. Herein: Fig. 1 An exemplary device in three-dimensional view in a position for receiving a roll in the horizontal position Fig. 2 An exemplary device in two-dimensional view in a position for receiving a roll in the horizontal position Fig. 3 A schematic representation of the upper part with an angle β of 90° and an angle α between the receiving fork and the horizontal with the horizontal roll mounted Fig. 4 A schematic representation of the upper part with an angle β of 90° with a horizontal roll in the horizontal position of the receiving fork Fig. 5 A schematic representation of the upper part with an angle β of 90° with the roller mounted during pivoting into a vertical position Fig. 6 A schematic representation of the upper part with an angle β of 90° with the roller mounted in a vertical position Fig. 7 An exemplary device in three-dimensional view in a position for receiving a roll in the vertical position Fig. 8 A schematic representation of the upper part with an angle β of greater than 90° and an angle α between the receiving fork and the horizontal with the horizontal roll mounted Fig. 9 A schematic representation of the upper part with an angle β of 90° with a horizontal roll in the horizontal position of the receiving fork Fig. 10 A schematic representation of the upper part with an angle β of 90° with the roller mounted in a vertical position

[0029] Fig. 1 shows an exemplary embodiment of a device 1 for moving a roll 2 with a longitudinal axis 3 from a lying position, in which the longitudinal axis 3 of the roll 2 is in a horizontal orientation, to a standing position, in which the longitudinal axis 3 of the roll 2 is in a vertical orientation, or vice versa. The device 1 is shown in a position in which a lying roll 2 can be picked up by the device 1 or released from the device 1.

[0030] The device 1 comprises a lower part 5, a pivoting mechanism 6 mounted on the lower part 5, and a pivotable upper part 7. The pivoting mechanism 6 can be designed, for example, as an electromechanical adjustment drive, as a hydraulic drive or as a pneumatic drive.

[0031] The upper part 7 comprises a support surface 10, which is the top of a mechanical assembly, and a receiving fork 8, which typically includes two support arms 9. In the case of the Fig. In the example shown, the surfaces of the two support arms 9 are chamfered inwards, so that the receiving fork 8 has a prismatic cross-section for easy picking up and secure holding of a picked-up roll 2. The receiving fork 8 with the two support arms 9 is arranged essentially perpendicular to the support surface 10.

[0032] The Fig. The device 1 illustrated by way of example in Figure 1 also comprises a frame 14, which may be equipped with sensors for detecting the dimensions of a roll 2 that can be fed in from the right or a roll 2 that can be discharged to the right. Since this feature of the device is not relevant for the further description of the present invention, this component will not be discussed further below.

[0033] The upper part 7 can be pivoted by the pivoting mechanism 6 essentially by 90° to move a roller 2 from a horizontal position to a vertical position, or vice versa.

[0034] The following describes the operation in the form when a roller 2, which is in a horizontal position as in Fig. 1 is shown, whereby the following described function also applies to moving a roll 2 from a vertical position to a horizontal position, although the processes then take place in reverse order.

[0035] Fig. Figure 1 shows the exemplary case where a roller 2, which is in a horizontal position on a horizontal support 4, is pushed onto the receiving fork 8 of the device 1, which in Fig. 1 is indicated by the arrow in the area of ​​the roller 2. The support 4, on which the horizontally positioned roller 2 rests, can be either a flat support surface, which is particularly sufficient if the device 1 itself is movable. However, the support 4 can also be designed as a movable trolley, which can be moved, for example, in a rail 15, or as a conveyor belt or as a movable transport device.

[0036] In the Fig. In the example shown in Figure 1, the support 4 is designed as a trolley, which can be moved in a rail 15 either manually or preferably by motor. Fig. 1 therefore shows a state in which the leading end face 16 of the roller 2 is arranged at a short distance in front of the receiving fork 8.

[0037] Fig. 2 shows a side view of the Fig. 1 shown device 1 with the same position of the roll 2, which is conveyed by means of the support 4 onto the receiving fork 8. Fig. 2 illustrates that the storage surface 10 essentially occupies a vertical position. Fig. 2 clearly shows that if the receiving fork 8 is in a horizontal position when pushing the roller 2 onto the support arms 9, the areas of the roller 2 which come into contact with the support arms 9 would scrape along them, which would lead to damage to the roller 2.

[0038] Since the trolleys on which such rollers 2 are transported, contrary to the schematic representations in the Fig. Since rollers 1 to 10 actually have a very low height, there is very little space between the underside of a roller 2 and the ground. The same applies to conveyor belts or belt conveyors, which are usually embedded in the ground at ground level.

[0039] Fig. 3 shows schematically the Fig. 2 shown upper part 7 with a roll 2 pushed onto it. In order to avoid damage to the roll 2 in the areas in which the two support arms 9 are arranged, when picking up the lying roll 2 from a horizontal support 4 or when placing the roll 2 in the lying position on the horizontal support 4, the receiving fork 8 is inclined to the horizontal support 4 by an angle α.

[0040] As from Fig. 3, the receiving fork 8 is inclined by the angle α to the horizontal in such a way that the ends of the support arms 9 of the receiving fork 8 facing away from the storage surface 10 are arranged lower in relation to a horizontal and thus closer to the ground or a floor surface than the ends of the support arms 9 of the receiving fork 8 facing the storage surface 10.

[0041] This angle α is typically in a range of 0.5° to 5°, preferably in a range of 1° to 3°, and particularly preferably in a range of 0.5° to 2°. Such angles α are sufficient for the usual lengths of the rollers 2 to prevent the roller 2 from rubbing against the support arms 9.

[0042] At the Fig. In the embodiment shown in Figure 3, the receiving fork 8 is rigidly connected to the support surface 10 and forms an angle β of 90°. The upper part 7 can, in principle, be designed as a single mechanical component, which allows for a technically simple solution.

[0043] Due to the 90° angle between the support arms 9 of the receiving fork 8 and the support surface 10, as well as due to the angle α between the support arms 9 and the horizontal, the following results when the roller 2 is pushed onto the upper part 7: Fig. 3, in which only the upper part or the upper edge of the end face 16 of the roller 2 is in contact with the support surface 10, which in Fig. 3 is shown as contact point 12, and that only the part of the outer surface of the roller 2 facing the storage surface 10 is in contact with the two support arms 9. In this case, the roller 2 is not damaged, since after completion of the sliding onto the receiving fork 8 of the upper part 7, it still rests on the support 4, which in the Fig. 1 to 3 is designed as a trolley, for example.

[0044] However, if the upper part 7 in the Fig. In the example shown in Figure 3, if the roller 2 is moved from the horizontal position to the vertical position and pivoted around an arbitrary pivot point, the roller 2 would indeed pivot along with the upper part 7 when the upper part is pivoted clockwise. However, the roller 2 would initially only rest on the support surface 10 at a single point in the area of ​​contact point 12. Therefore, the weight of the roller 2, which can range between 1.5 and 7.5 tons depending on the substrate type, roller width, and roller diameter, could cause damage to the roller 2, such as the outer layers of the roller 2 shifting and / or the corresponding web edge being damaged in this area.

[0045] In addition, if the upper part 7 and thus also the roller 2 are pivoted further, it is possible that the roller 2 will suddenly detach from the point supports on the storage surface 10 and the support arms 9, so that the roller 2 will suddenly slip, which can also lead to further damage to the roller 2 and / or to a displacement of the roller 2 in the upper part 7.

[0046] To avoid these undesirable phenomena, when the roller 2 is picked up from the horizontal support 4, at least at the beginning of the pivoting process and thus the pivoting of the upper part 7, the latter is rotated or pivoted about a pivot point 11, which is arranged in the region of the contact point 12 of the end face 16 of the roller 2 with the support surface 10 or outside the roller 2 and / or the upper part 7. The position of the pivot point 11 depends in particular on the dimensions of the roller 2 and can change its position during the pivoting process.

[0047] Such a movement or such a pivot point 11 can be achieved, for example, by pivoting the upper part 7 by means of a pivoting mechanism 6, which is either designed as a four-bar linkage 13 or comprises a four-bar linkage 13, as is shown, for example, in the Fig. 1 and Fig. 2 is evident.

[0048] Fig. 4 shows the state after the Fig. 3, the upper part 7 shown has been pivoted through a small angle about the pivot point 11. As a result of the targeted pivoting about a defined pivot point 11, the roller 2 rests with its end face 16 completely against the support surface 10 of the upper part 7, and the roller 2 also rests over its entire length against the support arms 9 of the receiving fork 8, so that upon further pivoting of the upper part 7 in a clockwise direction, no problems such as damage to the roller 2 or slipping of the roller 2 on the upper part 7 can occur.

[0049] Fig. 5 shows that when the upper part 7 is pivoted further in a clockwise direction, the end face 16 of the roller 2 rests completely on the support surface 10, so that the upper part 7 is now also pivoted about a different pivot point than the original pivot point 11, provided that the pivot point is selected according to expert aspects.

[0050] Fig. Figure 6 shows the upper part 7 together with the roll 2 after it has reached the vertical position, meaning that the longitudinal axis 3 of the roll 2 assumes a vertical position. In this position, the roll 2 can be transported away from the support surface 10 of the upper part 7 to the right.

[0051] For this purpose, the storage area 10 comprises a Fig. 7. Schematically depicted conveying device, which is designed, for example, as a conveyor belt or as a plate belt.

[0052] Fig. 7 shows the Fig. 1 Three-dimensional illustration of an exemplary embodiment of a device 1, already shown, wherein in Fig. 7 the upper part 7 opposite the Fig. The position shown in 1 was rotated by essentially 90°, whereby in Fig. 7. For better understanding, role 2 is not shown.

[0053] Although not in Fig. 7, it is possible that to the right of the device 1 and thus to the right of the storage area 10 a Fig. 7, a further transport device, not shown, is arranged, which is also designed, for example, as a conveyor belt or as a plate conveyor or as another suitable transport device, as are sufficiently known from the prior art.

[0054] Fig. 8 again shows the upper part 7 with the roller 2 already pushed onto the receiving fork 8, comparable to Fig. 3, where Fig. 8 shows a further embodiment in which the upper part 7 is not designed as a fixed unit, but in which the receiving fork 8 is designed to be pivotable relative to the storage surface 10, which in Fig. 8 is illustrated by separate and thus self-contained bodies for the transport fork 8 or the support arms 9 and the mechanical component which forms the storage surface 10, whereby in the Fig. The depiction of corresponding swivel mechanisms was omitted in sections 8 to 10.

[0055] This embodiment has the advantage that by pivoting the receiving fork 8 separately to the support surface 10, the support surface 10 can be aligned parallel to the end face 16 of the roller 2 which is in the horizontal position. Therefore, in the Fig. In the embodiment shown in Figure 8, the support surface 10 has a vertical orientation, whereas when the lying roll 2 is picked up from a horizontal support 4, the receiving fork 8 is inclined to the horizontal support 4 by an angle α. In this case, too, this angle α is usually in a range of 0.5° to 5°, preferably in a range of 1° to 3°, and particularly preferably in a range of 0.5° to 2°.

[0056] Due to the vertical alignment of the support surface 10 and the inclination of the support arms 9 of the receiving fork 8 to the horizontal by the angle α, the angle β is greater than 90° when the roll 2 is picked up on the receiving fork 8. As can be seen from Fig. 8, the receiving fork 8 is inclined by the angle α to the horizontal in such a way that the ends of the support arms 9 of the receiving fork 8 facing away from the storage surface 10 are arranged lower in relation to a horizontal and thus closer to the ground or a floor surface than the ends of the support arms 9 of the receiving fork 8 facing the storage surface 10.

[0057] Before pivoting the upper part 7 by substantially 90° to move the roll 2 from a horizontal position into a vertical position, it is therefore advisable, in order to avoid tilting of the roll 2 in the upper part 7, that when picking up the roll 2 from the support 4, the receiving fork 8 and thus the support arms 9 are first pivoted in such a way that an angle of 90° is achieved between the receiving fork 8 and thus the support arms 9 and the storage surface 10, while the storage surface 10 is in a vertical orientation.

[0058] Fig. Figure 9 schematically shows the upper part 7, in which the support arms 9 of the receiving fork 8 have been pivoted such that they form an angle β of 90° with the support surface 10. Consequently, the roller 2 rests with its end face 16 against the support surface 10 over its entire surface and also rests on the support arms 9 of the receiving fork 8 along its entire length, so that when the upper part 7 is further pivoted to move the roller 2 from the horizontal to a vertical position, no damage from point contact and / or slippage of the roller 2 is to be expected.

[0059] Fig. 10 shows the upper part 7 together with the roll 2 from Fig. 9, after it has reached the vertical position, which means that the longitudinal axis 3 of the roll 2 assumes a vertical position. In this position, the roll 2 can be transported away from the support surface 10 of the upper part 7 to the right. For the transport of the roll 2 in the vertical position, the same applies as described under the Fig. 6 and Fig. 7 has already been executed.

[0060] Although the Fig. 1, Fig. 2 and Fig.Figure 7 shows only exemplary embodiments of the device 1 in which the lower part 5 can be permanently connected to the ground, it is also possible to design the lower part 5 in such a way that it is designed as a mobile or transportable device, so that the entire device 1 would be movable and thus usable at any location or the roller 2 could be transported either in a horizontal position or in a vertical position. List of reference symbols 1 device 2 rolls 3 Longitudinal axis 4 horizontal support 5 lower part 6 Swivel mechanism 7 Top 8 Pickup fork 9 Support arm 10 storage space 11 Pivot point 12 contact points 13 four-bar chain 14 frames 15 rail 16 Front side

Claims

[1] Device (1) for moving a roll (2) with a longitudinal axis (3) from a lying position, in which the longitudinal axis (3) of the roll (2) is in a horizontal orientation, into a standing position, in which the longitudinal axis (3) of the roll (2) is in a vertical orientation, or vice versa, wherein the device (1) comprises a lower part (5), a pivoting mechanism (6) and a pivotable upper part (7), wherein the upper part (7) comprises a receiving fork (8) with two support arms (9) and a storage surface (10) arranged substantially at right angles to the receiving fork (8), wherein the upper part (7) is pivotable through substantially 90° for moving the roll (2) from the horizontal position to the vertical position or vice versa, characterized bythat when the lying roll (2) is picked up from a horizontal support (4) or when the roll (2) is placed in the lying position on the horizontal support (4), the receiving fork (8) is inclined to the horizontal support (4) by an angle α. [2] Device (1) according to claim 1, characterized by that the receiving fork (8) is firmly connected to the storage surface (10) and encloses an angle β of 90°. [3] Device (1) according to claim 2, characterized by that when the roll (2) is picked up from the horizontal support (4), at least at the beginning of the pivoting or at the latest before the roll (2) is placed on the horizontal support (4), the upper part (7) can be rotated about a pivot point (11) which is arranged at a contact point (12) of the roll (2) with the storage surface (10) or outside the roll (2). [4] Device (1) according to claim 3, characterized bythat the upper part (7) can be pivoted by means of a four-bar chain (13) included in the pivoting mechanism (6). [5] Device (1) according to claim 1, characterized by that the receiving fork (8) is designed to be pivotable relative to the storage surface (10). [6] Device (1) according to claim 5, characterized by that when the roll (2) is picked up from the horizontal support (4) or when the roll (2) is placed on the horizontal support (4), the support surface (10) of the upper part (7) is aligned in a vertical position and that an angle β of more than 90° is included between the receiving fork (8) and the support surface (10). [7] Device (1) according to one of claims 1 to 6, characterized by that the storage area (10) comprises a conveyor device. [8] Device (1) according to one of claims 1 to 7, characterized by that the device (1) is movable or is arranged in a fixed position. [9] Device (1) according to one of claims 1 to 8, characterized by that the horizontal support (4) is designed as a flat storage surface, as a trolley or as a conveyor belt or as a mobile transport device.

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