APPARATUS, ARRANGEMENT AND METHOD FOR PACKAGING LOADED GOODS WITH A PAPER WEB

Abstract

The invention relates to an apparatus, arrangement and method for packaging loaded goods (2) that are palleted or arranged on a pallet (1) by winding a paper web (3) around the goods helically whilst simultaneously unwinding the paper web (3) from a paper roll (4), comprising:a rotary device (5) for rotating the pallet (1) and the loaded goods (2) located on the pallet (1) about a pallet rotational axis (6),a roll holder (7) with at least one holding extension (8) for rotatably holding a paper roll (4) about a roll rotational axis (9),an output device (10) for outputting the paper web (3) unrolled from the paper roll (4) in an output direction (11) pointing towards the rotary device (5) or the loaded goods (2), anda lifting device (12) for changing the height (13) of the output of the paper web (3) from the output device (10), a pivoting device (14) with a pivoting carrier (16) pivotable about a pivot axis (15) being provided to tilt the output direction (11) of the paper web (3).

Claims

1. An apparatus for packaging loaded goods that are palleted or arranged on a pallet by helically wrapping a paper web around them while simultaneously unwinding the paper web from a paper roll, comprising: a rotary device for rotating the pallet and the load goods on the pallet about a pallet rotational axis, a roll holder with at least one holding extension for rotatably holding a paper roll about a roll rotational axis, an output device for outputting the paper web unwound from the paper roll in an output direction pointing towards the rotary device(s) or the loaded goods, a lifting device for changing the height of the output of the paper web from the output device, wherein a pivoting device having a pivoting carrier pivotable about a pivot axis for tilting the output direction of the paper web is provided.

2. The apparatus according to claim 1, wherein the roll holder is mounted on the pivoting carrier and can be pivoted together with the pivoting carrier about the pivot axis.

3. The apparatus according to claim 1, wherein the output device is mounted on the pivoting carrier and can be pivoted together with the pivoting carrier about the pivot axis.

4. The apparatus according to claim 1, wherein the pivot axis extends substantially horizontally.

5. The apparatus according to claim 1, wherein the pivot axis runs substantially through the common centre of gravity of all components that can be pivoted by the pivot device, wherein the components which can be pivoted by the pivoting device, are in particular at least the pivoting carrier, the roll holder, the output device and the paper roll, and/or that the pivot axis substantially passes through a point at which the centre of gravity of the paper roll lies when it is held by the roll holder.

6. The apparatus according to claim 1, wherein the pivoting device inclines the output direction in an output angle which substantially corresponds to the lead angle of the helical wrapping, in particular that this tilting is carried out automatically.

7. The apparatus according to claim 1, wherein the pivoting device is engaged on the lifting device and can be raised and lowered by the lifting device.

8. The apparatus according to claim 1, wherein the pivoting device has a loading position in which the roll rotation axis is aligned substantially horizontally in order to enable a standing paper roll to be put on horizontally on the holding extension.

9. The apparatus according to claim 1, wherein the pivoting device has at least one wrapping position during wrapping, in which the output direction runs obliquely in the direction of the rotary device or loaded goods when the lifting device changes the height of the output of the paper web from the output device.

10. The apparatus according to claim 1, wherein the roll holder and the output device are mounted on the pivoting carrier, that an adjusting device is provided on the pivoting carrier for changing the distance between the roll holder and the output device, in particular that the holding extension is arranged to be movable along the pivoting carrier relative to the output device.

11. The apparatus according to claim 1, wherein the output device comprises a traction device for adjusting and/or keeping constant the traction of the paper web during wrapping.

12. The apparatus according to claim 1, wherein the output device comprises a folding device for folding an edge of the paper web.

13. An arrangement, comprising: an apparatus according to claim 1, a paper roll held on or by the roll holder, and loaded goods palletised or arranged on a pallet, wherein the pallet is provided on the rotary device.

14. A method of packaging loaded goods that are palleted or arranged on a pallet by helically wrapping a paper web around them while simultaneously unwinding the paper web from a paper roll, comprising the following steps: Rotation of the pallet and of the loaded goods on the pallet about a pallet rotation axis, whereby the paper web is wrapped around the loaded goods and pulled off the paper roll by an output device, simultaneously changing the height of the output of the paper web from the output device by means of a lifting device, whereby the paper web is wrapped helically around the load, wherein the output direction of the paper web from the output device during the helical wrapping is tilted.

15. The method according to claim 14, wherein the output direction is tilted to an output angle which substantially corresponds to the lead angle of the helical wrapping, in particular that this tilting is carried out automatically.

Description

[0090] The invention is further described below with reference to the figures:

[0091] FIG. 1 shows a schematic oblique view of one embodiment of the apparatus.

[0092] FIG. 2 shows a schematic side view of one embodiment of the apparatus.

[0093] FIG. 3 shows a schematic oblique view of components of the apparatus in the loading position.

[0094] FIG. 4 shows a schematic oblique view of details of the apparatus.

[0095] Unless otherwise indicated, the reference numbers in the figures correspond to the following components: Pallet 1, loaded goods 2, paper web 3, paper roll 4, rotary device 5, pallet rotational axis 6, roll holder 7, holding extension 8, roll rotational axis 9, output device 10, output direction 11, lifting device 12, height (of the output of the paper web) 13, pivoting device 14, pivot axis 15, pivoting carrier 16, output angle 17, lead angle 18, adjustment device (for changing the distance between the holding device and the output device) 19, traction device 20, folding device 21, tension control roller 22, dancing roller 23, deflection roller 24, cylindrical main folding roller 25, conical folding roller 26, support roller 27, adjustment means (pneumatic cylinder) 28, drive (of the tension control roller) 29, spring 30, damper 31, infeed carriage 32, machine frame 33.

[0096] FIG. 1 shows a schematic oblique view of the apparatus. The apparatus comprises a rotary device 5. A pallet 1 is arranged on this rotary device 5, which may be rotated by the rotary device 5 about a pallet rotational axis 6. The loaded goods 2 are provided on pallet 1. These loaded goods 2 and in particular also the pallet 1 are to be wrapped with a paper web 3, whereby the paper web 3 is only shown in dashed lines in the present illustration in order to better represent the components of the apparatus. Preferably, the rotary device 5 has a rotary drive which is configured to rotate the pallet 1 and the loaded goods 2 arranged on it about the pallet rotation axis 6 and, in particular, to achieve a sufficient web tension.

[0097] A roll holder 7 is provided to hold the paper roll 4. The roll holder 7 comprises a holding extension 8. The roll holder 7 is suitable for rotatably mounting the paper roll 4. In particular, the paper roll 4 is mounted to rotate about a roll rotational axis 9. In all embodiments, it is preferably provided that the roll rotation axis 9 and the rotation axis of the paper roll 4 coincide. Due to the rotatable mounting of the paper roll 4, the paper web 3 may be unwound from the paper roll 4 by pulling the paper web 3 off.

[0098] The apparatus comprises an output device 10 for outputting the paper web 3 along an output direction 11. The output direction 11 is preferably directed towards the pallet 1 or towards the loaded goods 2.

[0099] In particular, it is provided that the pallet 1 and the loaded goods 2 arranged thereon are rotated by the rotary device 5, the paper web 3 being wrapped around the loaded goods 2 by the rotation of the loaded goods 2. The tractive force exerted by the rotation of the loaded goods 2 pulls the paper web 3 off the paper roll 4 through the output device 10.

[0100] A lifting device 12 is provided to helically wrap the loaded goods 2 along its entire height. It is configured to change the height 13 of the output paper web 3.

[0101] In order to be able to select the tilting of the output direction 11, a pivoting device 14 is provided. The pivoting device 14 comprises a pivoting carrier 16, which may be pivoted about a pivot axis 15.

[0102] The pivot axis 15 preferably extends transversely, in particular orthogonally to the roll rotational axis 9. The paper roll 4 is also not displayed in this illustration and is only shown schematically as a dashed line.

[0103] Preferably, the apparatus, in particular the output device 10, comprises a traction device 20 which enables the tractive force of the paper web 3 to be selected or regulated. Preferably, the pivoting carrier 16 has a degree of freedom of pivoting about the pivot axis 15, this degree of freedom being restricted in the present embodiment by the fact that at least one spring 30 and optionally also a damper 31 act on the pivoting carrier 16 in order to cushion and/or dampen its movement. In the present embodiment, two springs 30 engage on both sides of an element of the pivoting carrier 16 in order to resiliently restrict its movement on both sides. The further the pivoting carrier 1 6 is pivoted from its home position, the greater the counterforce exerted by the springs 30.

[0104] A damper 31 is provided to dampen oscillations. Preferably, a machine frame 33 is provided which supports some components of the apparatus.

[0105] In the present embodiment, an infeed carriage 32 is provided for feeding the paper roll 4.

[0106] When the paper web 3 is unwound from the paper roll 4, the diameter of the paper roll 4 changes. An adjustment device 19 is provided to compensate for the change in diameter. This adjustment device 19 may be used to adjust the distance between the holding extension 8 and the output device 10. In particular, the holding extension 8 of the roll holder 7 is displaceably arranged on the pivoting carrier 16 so that the distance between the holding extension 8 and the output device 10 may be selected. For this purpose, the adjusting device 1 9 may, for example, comprise a drive, whereby this drive may be an electric drive or a drive by means of a pretensioned spring. Preferably, the adjusting device 19 presses the paper roll 4 against a component of the output device 10.

[0107] FIG. 2 shows a schematic side view of an apparatus which may correspond in particular to the apparatus of FIG. 1. The apparatus, in particular the pivoting device 14, is in its wrapping position in the illustration of FIG. 2.

[0108] The loaded goods 2 are arranged on a pallet 1, which in turn is arranged on the rotary device 5. The rotary device 5 rotates the pallet 1 and the loaded goods 2 arranged on it around a pallet rotational axis 6. This rotary movement wraps a paper web 3 around the loaded goods 2. The paper web 3 is output along an output direction 11 by an output device 10. The paper web 3 is unwound from a paper roll 4 during outputting. Preferably, a lifting device 12 is actuated at the same time to change the height 13 of the output of the paper web 3. As a result, the loaded goods 2 can be helically wrapped in a helical shape. To prevent creasing of the paper during the helical wrapping or the paper web 3 from tearing during wrapping, a pivoting device 14 is provided. The pivoting device 14 allows the output direction 11 of the paper web 3 to be tilted. In particular, the output direction 11 is tilted by the output angle 17 in the present embodiment. The output angle 17 corresponds substantially to the lead angle 18 of the helical wrapping of the loaded goods 2. Preferably, the apparatus is configured to automatically set the output angle 17 by pulling the paper web 3 out of the output device 10 by the rotation of the loaded goods 2. As a result, depending on the actuation of the lifting device 12 and the rotary device 5, the output direction 11 may adjust automatically.

[0109] However, it is also entirely consistent with the idea of the invention to change the tilting or the output angle 17 by having a drive such as a rotary drive actuate the pivoting device 14.

[0110] FIG. 3 shows a schematic oblique view of components of the apparatus in its loading position. The components correspond substantially to those shown and described in FIGS. 1 and 2.

[0111] In the loading position, the pivoting device 14 is in a position in which the holding extension 8 of the roll holder 7 is configured to be able to connect a paper roll 4 to the roll holder 7. In the present embodiment, the holding extension 8 extends substantially horizontally. Via the lifting device 12, the holding extension 8 is arranged at a height that substantially corresponds to the height at which the infeed of the paper roll 4 is arranged. This means that the paper roll 4 may simply be put on the holding extension 8 via the infeed carriage 32 shown in FIGS. 1 and 2.

[0112] In order to subsequently bring the apparatus into the wrapping position, the pivoting device 14 may be actuated so that the pivoting carrier 16 rotates about the pivot axis 15 until the holding extension 8 no longer extends horizontally but substantially from top to bottom.

[0113] Preferably, a new paper roll 4 can already be stored on the infeed carriage 32 while a further paper roll 4 is still arranged on the apparatus in order to wrap the loaded goods 2 with a paper web 3. Optionally, fixing bolts may be provided in all embodiments, which temporarily fix the pivoting device 14 in the loading position.

[0114] FIG. 4 shows a schematic oblique view of details of a possible embodiment of an apparatus, whereby these details can also be provided in the embodiments of FIGS. 1, 2 and 3.

[0115] The embodiment shown in FIG. 4 comprises an output device 10 for outputting a paper web 3 along an output direction 11. The paper web 3 is unwound from the paper roll 4 and output along the output direction 11.

[0116] The embodiment shown in FIG. 4 comprises a folding device 21. This folding device 21 is configured to fold over at least one edge of the paper web 3 as it is output. This may improve the stability and/or tensile strength of the paper web 3. The folding device 21 comprises a cylindrical main folding roller 25 and a conical folding roller 26. When the paper web 3 is fed through, one edge of the paper web 3 is first pre-folded at an angle to the cooperation of the conical folding roller 26 and the cylindrical main folding roller 25 and then folded over by 180 so that one edge of the paper web 3 is folded over.

[0117] A support roller 27 can be provided downstream, which supports the paper web 3 from below, particularly at its unfolded edge, in order to prevent the paper web 3 from sinking. Two rollers arranged in pairs can be provided as further elements of the folding device 21 and/or the output device 10, which secure the folding and define a defined output location for the paper web 3.

[0118] Optionally, as in the present embodiment, the paper web 3 is deflected around a deflection roller 24 in order to ensure a constant winding angle of the paper web 3 onto the main folding roller 25.

[0119] The embodiment shown in FIG. 4 comprises a traction device 20. This tractive device 20 is configured to adjust or regulate the tension or tractive force acting between the loaded goods 2 and the output device 10. The traction device 20 comprises a tension control roller 22. This tension control roller 22 is arranged in the path of the paper web 3 immediately downstream of the paper roll 4 in order to brake or accelerate the paper web 3. In particular, the paper roll 4 is pressed against the tension control roller 22 via the adjustment device 19. A dancing roller 23 is provided along the path of the paper web 3 after the tension control roller 22. This dancing roller 23 is adjustably mounted, whereby an adjusting means 28 is provided which can adjust the position of the dancing roller 23. The tension of the paper web 3 can be adjusted by actuating this adjusting means 28, which is designed, for example, as a linear axis or as a linear operating actuator.

[0120] Preferably, it is provided that the paper web 3 is deflected around the dancing roller 23 and in particular deflected by 180, so that the tractive force or the tension of the paper web 3 can be adjusted by actuating the adjusting means 28.

[0121] The tension control roller 22 preferably comprises a drive 29, via which the torque of the tension control roller 22 can be adjusted or selected.