Wrapping device, packaging machine, and method for guiding a packaging means around an item to be packaged
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- SIEBECK
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-08
AI Technical Summary
Existing packaging machines face challenges with high energy consumption, limited rotation speed, and difficulty in replacing packaging material supplies due to high inertia, and struggle with wrapping non-round products that deform or tear at corners.
A wrapping device with a guide device that allows the fixing unit to move along a definable path, using a cam guide and contact elements like rollers to ensure gentle wrapping, reducing tension stress and enabling larger items to be wrapped without entanglement.
Ensures reliable and gentle wrapping of goods with reduced energy consumption and adaptability to various shapes, allowing for larger items and sensitive products to be packaged efficiently.
Smart Images
Figure DE2025100896_26032026_PF_FP_ABST
Abstract
Description
[0001] Wrapping device, packaging machine and method for guiding a packaging material around a package
[0002] The invention relates to a wrapping device for a packaging machine for guiding a packaging material, such as a cord or a band, around a packaged item, comprising a fixing device with a fixing unit, in particular a clamping head, for fixing a packaging material beginning and a drive device, wherein the fixing device with the fixed packaging material beginning can be moved by means of the drive device in a wrapping motion around the packaged item, wherein the packaging material can be pulled from a supply of packaging material arranged stationary in and / or on the packaging machine.
[0003] Furthermore, the present invention relates to a packaging machine for packaging goods with a packaging device comprising such a wrapping device and a closure device, in particular a knotting device. The invention also relates to a method for guiding a packaging device around goods with such a wrapping device.
[0004] Packaging machines are used for the automated packaging of various goods with a packaging material. Such a packaging machine can include a positioning device for positioning the goods, a wrapping device for guiding the packaging material, such as a cord or strap, around the goods, and a closing device for sealing the packaging. The wrapping device guides the packaging material around the goods in a wrapping motion.
[0005] The wrapping device can incorporate a supply of packaging material that rotates along a ring around the packaged goods. However, a disadvantage of this design is that the high inertia of the packaging material supply necessitates a high drive power, resulting in correspondingly high energy consumption. Furthermore, this design limits the rotation speed and the maximum amount of packaging material the supply can hold. Replacing the packaging material supply is also more difficult with this arrangement.
[0006] For guiding rigid metal or plastic strapping around the packaged goods, the wrapping device can alternatively have a channel or frame encompassing the packaged goods. The wrapping device is designed to push the strapping through this channel or frame. Pre-tension can be achieved through active retraction. However, the size of the channel or frame is limited, as the strapping can only be pushed a certain length without becoming entangled in the channel or frame.
[0007] To overcome the disadvantages described above, it has become common practice to fix the beginning of the packaging material and guide it around the product being packaged. In this process, the packaging material is pulled along from a stationary supply of packaging material.
[0008] Such a device is known, for example, from European patent EP 0 582 161 A1. This patent discloses a packaging machine with a wrapping device comprising a ring driven by a drive belt. A gripper is arranged on the ring, which grasps the end of a packaging element and moves the packaging element clockwise around the product being packaged. During this process, the packaging element is drawn from a decentralized supply roll. A feeder and closing mechanism connects the fed end of the packaging element to a portion of the packaging element. The patent describes that the packaging element can be made of a weldable material and thus bonded to itself by heat. Alternatively, the packaging element can be self-adhesive.However, with products whose cross-sectional profile is not round but has corners, a problem arises because the packaging material is subjected to increased tensile stress in these corners. This can deform the product. Furthermore, the risk of the packaging tearing at these points increases.
[0009] The present invention therefore aims to design and further develop a wrapping device of the type mentioned above in such a way that reliable and gentle wrapping of the packaged goods is ensured using structurally simple means. Furthermore, a corresponding packaging machine for packaging goods with a packaging element and a corresponding method for guiding a packaging element around a packaged goods with a wrapping device are to be specified.
[0010] According to the invention, the foregoing problem is solved by a wrapping device for a packaging machine for guiding a packaging element, such as a cord or a strap, around a packaged item, having the features of claim 1, and by a packaging machine for packaging a packaged item with a packaging element having the features of claim 15. Furthermore, the foregoing problem is solved by a method for guiding a packaging element around a packaged item with a wrapping device having the features of claim 17.
[0011] The wrapping device is characterized by a guide device, wherein the fixing device is guided by the guide device during the wrapping movement in such a way that the fixing unit is movable along a definable path.
[0012] The packaging machine according to the invention for packaging goods with a packaging element comprises a wrapping device according to the invention and a closure device, in particular a knotting device. The method according to the invention for guiding a packaging element, such as a cord or a strap, around goods with a wrapping device according to the invention comprises the following steps:
[0013] Providing a packaging material start fixed in the fixing unit, and
[0014] Moving the fixing device around the packaged goods in a wrapping motion using the drive device.
[0015] In accordance with the invention, it has first been recognized that the path to be traversed by the fixing unit or the beginning of the packaging material can be defined particularly easily using a guide device. By appropriately designing the guide device depending on the shape of the product to be wrapped, the path can be defined in such a way that the packaging material is guided and placed around the product with particular care. In addition, locally determined tension states of the packaging material can be provided, specific to the product. The wrapping device can thus form a receiving space in which the product can be at least partially positioned. For example, it is conceivable that a product table can be arranged at least partially within the receiving space on which the product can be positioned. Furthermore, the guide device can be interchangeable.Thus, the guiding device can be selected depending on the packaged goods and adapted to the shape of the packaged goods in a suitable manner.
[0016] The term "packaging material" is to be understood in the broadest sense within the scope of this disclosure and includes binding materials such as cords, threads, strings, twines and yarns of any material composition, further includes strapping and banding materials such as plastic, paper, textile and metal bands, and includes flat packaging materials such as plastic and metal films, paper and textiles as roll goods.
[0017] The packaging material is pulled along by a supply of packaging material located in and / or on the packaging machine. Thus, the packaging material is under constant tensile stress during the wrapping motion. This enables particularly reliable wrapping with strapping and banding materials. Because these are pulled completely around the packaged goods and not pushed, significantly larger items can be wrapped. There is no risk of the strapping or banding material becoming caught in a channel or frame.
[0018] The term "path" is to be understood in the broadest sense within the context of this disclosure and describes a trajectory extending in a plane or in space, along which the fixing unit moves while encircling the packaged goods. This can therefore be a virtual path.
[0019] The wrapping device according to the invention is designed to wrap around the product being packaged. This step can, in particular, be part of a work cycle of the packaging machine according to the invention, by which the product is packaged. The work cycle can also be referred to as a packaging operation and can be repeatable and fully or partially automated. The work cycle can include the clamping unit taking in the beginning of the packaging material, wrapping the product with the packaging material, closing the packaging material around the product, cutting off the packaging material, and releasing the beginning of the packaging material.
[0020] The packaging machine can be designed, in particular, as a tying machine for tying the packaged goods with a packaging material, preferably a binding agent. For this purpose, the tying machine can have a closure device in the form of a knotter.
[0021] Consequently, the wrapping device, the packaging machine, and the method according to the invention provide a wrapping device, a packaging machine, and a method whereby reliable and gentle wrapping of the packaged goods is ensured using structurally simple means. Advantageously, the guide device can comprise a cam guide with at least one cam or at least one guide element. Within the scope of this disclosure, the terms "cam guide" and "guide element" are to be understood in the broadest sense and describe a mechanical guide in which the fixing device is movable along a physical path defined by the at least one cam or the at least one guide element. This allows a desired movement path of the fixing device to be enforced and thus the path of the fixing unit to be defined in a simple manner.The at least one guide or guide element can have guide edges or surfaces on one or both sides, which can face away from and / or towards the packaged goods. The guide edges or surfaces can provide positive guidance for the fixing device. It is conceivable that a plane described by the at least one guide or guide element is parallel to a wrapping plane described by the wrapping movement. For example, a guide or guide element can be in the form of a disc with an outer guide edge and an inner recess. The inner recess can form at least part of the receiving space for the packaged goods. Furthermore, the guide or guide element can be interchangeable.Thus, the guide rail or at least one guide element can be selected depending on the packaged goods and adapted to the shape of the packaged goods in a suitable manner.
[0022] In a further advantageous manner, the fixing device and / or the drive device can have at least one contact element operatively connected to the guide device, in particular to the at least one cam or the at least one guide element. A contact element enables a particularly simple and reliable design. The guide edges or guide surfaces of the at least one cam or the at least one guide element can provide positive guidance for the at least one contact element and have a surface profile corresponding to a shape of the at least one contact element. It is conceivable that the fixing unit, for example designed as a clamping head, and the at least one contact element form a single structural unit.Thus, the fixing unit itself can form a contact element in operative connection with the guiding device, in particular the at least one cam or the at least one guide element.
[0023] It is also conceivable that the at least one contact element comprises a roller and / or a sliding element and / or a gear element, such as a gear. Using a roller can achieve low wear and low energy consumption of the drive, as the rolling motion minimizes friction between the roller and the at least one cam or guide element. Furthermore, a roller can contribute to smooth running of the contact element, thereby increasing the precision of the wrapping motion. Using a sliding element allows for a simple and cost-effective design of the wrapping device, as sliding elements do not require moving parts such as bearings. A gear enables a particularly precise wrapping motion with minimal slippage between the gear and the cam or guide element.
[0024] According to an advantageous embodiment, the fixing device and the drive device can be connected to each other via a coupling device in a way that allows for relative displacement. Such relative displacement can include translational and / or rotational movements. One of the advantages achieved is that specific degrees of freedom of movement of the fixing device relative to the drive device can be provided. This allows the guide device to be designed in such a way that a movement of the fixing device can be defined according to the degree(s) of freedom. Thus, a high degree of design freedom is possible when defining the path.
[0025] In a further advantageous embodiment, the coupling device can include a pivot joint, wherein the fixing unit is pivotable relative to the drive device, preferably wherein a pivot axis associated with the pivot joint lies perpendicular to a wrapping plane described by the wrapping movement. The fixing unit can then move freely along a specific path in a pivot plane. With a pivot axis perpendicular to the wrapping plane, a distance between the fixing unit and the packaged goods can thus be predetermined by means of the guide device. A coupling device with a pivot joint has a simple design.
[0026] Furthermore, it is conceivable that the web and / or the at least one guide or the at least one support element corresponds to a cross-sectional contour of the packaged goods, preferably wherein the cross-sectional contour is assigned to a cross-section of the packaged goods along a wrapping plane described by the wrapping movement. By adapting the web to the cross-sectional contour, a uniform pre-tension of the packaging material can be achieved in the applied state. Thus, critical pre-tension excesses can be avoided. For example, to wrap a rectangular cardboard box, the web and / or the at least one guide or the at least one support element can have a rectangular shape.
[0027] According to a beneficial further development, the path can be defined such that the fixing unit maintains a greater distance from the packaged goods during the wrapping of corner areas than during the rest of the wrapping movement. This has the advantage that the packaging material can be placed around the packaged goods particularly gently and that pressure forces on the packaged goods can be reduced.
[0028] Advantageously, the drive device can comprise a motor, in particular an electric motor, and a ring body and / or drive belt that can be rotated around the packaged goods by means of the motor, wherein the fixing device is fixed directly or indirectly to the ring body and / or the drive belt. It is conceivable that the ring body can be rotated via the drive belt by means of the motor. Alternatively, it is conceivable that only a drive belt is provided, which can be moved around the packaged goods by means of the motor. Such a ring body and such a drive belt represent simple and space-saving design options for moving the fixing device around the packaged goods. It is conceivable that the ring body and / or the drive belt is arranged parallel to and offset from the at least one cam or guide element along the pivot axis.
[0029] Advantageously, the ring body and / or the drive belt can be supported by at least three, and in particular four, rollers. The rollers can be arranged on the inside and / or outside. Support by three rollers provides stable support, with the three rollers defining a plane in which the ring body and / or the drive belt rotates. This ensures uniform and precise rotation of the ring body. Furthermore, this allows for a particularly space-saving design of the wrapping device. The drive belt, to which the fixing device is directly or indirectly attached, can be supported and moved by rollers, particularly those arranged on the inside, in a specific shape, for example, a rectangle. This makes it possible to adapt the receiving space specifically to the shape and dimensions of the packaged goods. Thus, a particularly space-saving design can be provided.
[0030] Furthermore, it is conceivable that the wrapping device has a passage for placing and moving the packaged goods through it. This has the advantage that even particularly long items can be wrapped along their entire length.
[0031] According to an advantageous embodiment, the beginning of the packaging material, preferably at the end of the wrapping movement, can be fed to a closure device, preferably centrally, below, or laterally of the packaged goods. Thus, the packaging material can be closed after wrapping. For example, in the case of a drawstringable packaging material, it can be knotted using a knotting device. By feeding the packaging material centrally below or laterally, either below or to the side of the packaged goods, the packaging material can be closed while maintaining high tension. Furthermore, it is conceivable that the wrapping device includes a feed unit for supplying the beginning of the packaging material to the closure device. This makes it possible to decouple the movement of the fixing device or the thread feeder and to guide the fixing unit to the closure device.This allows definable tensions to be applied to the packaged goods, regardless of their size. The feeding unit can, for example, include a linear drive. The feeding unit, and in particular the linear drive, can be designed according to the size of the feedthrough.
[0032] To pre-tension the packaging material, preferably before and / or during a packaging operation, the wrapping device can include a tensioning device. With the aid of the tensioning device, the packaging material can be placed under tension before or during the packaging operation. This ensures a uniform and tight wrapping of the goods, which in turn guarantees a secure hold for the packaging. Advantageously, the tensioning device can be arranged between the beginning of the packaging material and the supply of packaging material.
[0033] According to an advantageous embodiment, the clamping device can include a braking device and / or an active pulling device. A braking device allows the pretension of the packaging material to be easily controlled during the wrapping movement. The active pulling device makes it possible to guide the packaging material around the product without tension. This allows for particularly gentle packaging of pressure-sensitive goods. Furthermore, due to the lack of tensile tension on the packaging material during the wrapping movement, only its own weight is transported. The actual pretension of the packaging material is only generated after the wrapping process by retracting the packaging material using the active pulling device. Pretensioning of the packaging material can therefore occur while the wrapping device is stationary. This enables particularly dynamic wrapping.Passing around the packaging at high speed is possible because the wrapping device does not work against the tensile stress of the packaging material. Furthermore, excess packaging material can be actively retracted when handling small items in a large opening. This allows the entire construction to be designed with lightweight construction in mind.
[0034] Furthermore, it is conceivable that the closure device is arranged, preferably centrally, below, or to the side of the packaged goods. With a central arrangement, the packaging can be closed while maintaining a high preload.
[0035] There are now various ways to advantageously elaborate and further develop the teaching of the present invention. For this purpose, reference should be made, on the one hand, to the claims subordinate to claims 1 and 15, and on the other hand, to the following explanation of preferred embodiments of the invention with reference to the drawing. In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawing, generally preferred embodiments and further developments of the teaching are also explained. The drawing shows
[0036] Fig. 1 shows a schematic representation with a front view of a wrapping device according to an embodiment of the present invention,
[0037] Fig. 2 shows a further schematic representation with a spatial view of the encircling device according to the embodiment in Fig. 1 ,
[0038] Fig. 3 shows a further schematic representation with a side view of the wrapping device according to the embodiment in Fig. 1 ,
[0039] Fig. 4 shows a further schematic representation with a rear view of the slinging device according to the embodiment in Fig. 1, Fig. 5 shows a further schematic representation with a spatial view of the slinging device according to the embodiment in Fig. 1,
[0040] Fig. 6 shows a schematic representation with a front view of a wrapping device according to a further embodiment of the present invention,
[0041] Fig. 7 shows a further schematic representation with a side view of the wrapping device according to the embodiment in Fig. 6,
[0042] Fig. 8 shows a further schematic representation with a rear view of the wrapping device according to the embodiment in Fig. 6,
[0043] Fig. 9 shows a further schematic representation with a spatial view of the encircling device according to the embodiment in Fig. 6, and
[0044] Fig. 10 shows a schematic representation of the steps of a method according to an embodiment of the present invention.
[0045] Figures 1 to 5 show a schematic representation with different views of a wrapping device according to an embodiment of the present invention.
[0046] The wrapping device 1 for a packaging machine, shown in Figures 1 to 5, serves to guide a packaging material around a product 2 and comprises a fixing device 3 with a fixing unit 4 for fixing the beginning of the packaging material, as well as a drive unit 5. The fixing unit 4 is designed as a clamping head with a spring mechanism. The fixing device 3, with the fixed beginning of the packaging material, can be moved around the product 2 by means of the drive unit 5 in a wrapping motion. The packaging material is pulled along by a stationary supply of packaging material 6 arranged in and / or on the packaging machine, which therefore does not rotate around the product 2. The packaging material supply 6 is shown in Figure 5. The wrapping device 1 forms a receiving space 7 in which the product 2 can be positioned.Furthermore, the wrapping device 1 has a through-hole 8, so that the packaged goods 2 can be moved through the receiving space 7.
[0047] Furthermore, the wrapping device 1 has a guide device 9 by which the fixing device 3 is guided during the wrapping movement such that the clamping head 4 is movable along a definable path 31. The path 31 is a virtual path. For this purpose, the guide device 9 comprises a cam guide 10 with a cam 11, which is provided in the form of a disc with an outer guide edge 12 and an inner recess 13. The cam guide 12 with the cam 11 is to be understood as a guide element. This can, for example, be made of a metal sheet. As can be seen from Fig. 1, the inner recess 13 has a rectangular shape and forms part of the receiving space 7 for the packaged item 2. The outer guide edge 12 faces away from the packaged item 2 and provides positive guidance for the fixing device 3.
[0048] The fixing device 3 also has a contact element 14 that is operatively connected to the cam 11, which is particularly evident in Fig. 2. The contact element 14 is designed as a roller that is movable along the outer guide edge 12 of the cam 11 and is guided by it. In Fig. 2, the fixing device 3 is shown in a different position during the wrapping movement compared to Fig. 1. Furthermore, Fig. 2 shows an exemplary package 2 in the form of a box and a package table 15.
[0049] Furthermore, the fixing device 3 and the drive device 5 are connected to each other via a coupling device 16 so that they are relatively slidable. The coupling device 16 includes a pivot joint 17, whereby the clamping head 4 is pivotable relative to the drive device 5. A pivot axis 18 associated with the pivot joint 17 is perpendicular to a wrapping plane 19 described by the wrapping movement. Thus, the clamping head 4 can move freely along a specific path in a pivot plane 20 parallel to the wrapping plane 19, whereby a distance of the clamping head 4 to the packaged item 2 can be predetermined by means of the guide device 9. The wrapping plane 19 is identical here to the pivot plane 20. The path 31 that can be traversed in this way is defined such that the clamping head 4 has a greater distance to the packaged item 2 during the wrapping of corner areas 21 than during the rest of the wrapping movement.The outer guide edge 12 has the shape shown in Fig. 1.
[0050] In another embodiment, not shown here, the coupling device 16 can be designed such that the clamping head 4 cannot move freely during the wrapping movement. In this case, the fixing device 3 or the clamping head 4 is rigidly coupled to the drive device 5 or a drive belt of the drive device 5 during the wrapping movement.In a further embodiment, not shown here, the coupling device 16 can be designed such that the fixing device 3 with the clamping head 4 and the drive device 5 are connected to each other in a relatively displaceable manner, allowing the position of the fixing device 3 with the clamping head 4 relative to the drive device 5 to be adjusted. During the wrapping movement, the fixing device 3 or the clamping head 4 is coupled to the drive device 5 or to a drive belt or toothed belt of the drive device 5 in a set and thus fixed position. This relative displaceability or adjustability can be achieved via a lockable pivot bearing or a lockable pivot axis.In the further embodiments described in this section and not shown here, the mobility of the fixing device 3 or the clamping head 4 for secure guidance along the guide device 9 can be achieved via the elasticity and / or mobility of a drive belt of the drive device 5, in particular between two drive rollers or drive wheels for the drive belt. The drive device 5 of the wrapping device 1 has an electric motor (not shown here) and a ring body 22 that can be rotated around the packaged item 2 by means of the electric motor. The fixing device 3 is fixed to the ring body 22 via a connecting plate 23 and a cantilever 24 arranged thereon, so that the ring body 22 is arranged parallel to the cam 11 along the pivot axis 18. This is particularly evident from Fig. 3.The ring body 22 can be rotated by means of an electric motor via a drive belt (not shown). The ring body 22 is further supported by four rollers 25 arranged on the outside (see Fig. 4).
[0051] To close the packaging material wrapped around the packaged item 2, a closure device 26 is provided laterally to the wrapping device 1. In the embodiment described here, this closure device is designed as a knotting device for knotting a packaging material acting as a binding agent, such as a thread or cord. The wrapping device 1 allows the beginning of the packaging material to be fed to the closure device 26 laterally to the packaged item 2 at the end of the wrapping movement (see Fig. 1). The closure device 26 is arranged in a stationary position. Fig. 2 does not show the closure device 26 in its entirety.
[0052] To pre-tension the packaging material during a packaging operation, the wrapping device 1 has a clamping device 27. The clamping device 27 allows the packaging material to be pre-tensioned during the packaging operation or wrapping movement. The clamping device 27 is stationary between the beginning of the packaging material and the supply of packaging material 6 and includes a braking device 28. The braking device 28 is designed to control a clamping force acting on the packaging material with two clamping elements 29. The braking device 28 can be configured according to the teaching described in German patent application 10 2024201 272.6. Figures 6 to 9 show a schematic representation with different views of a wrapping device according to a further embodiment of the present invention.
[0053] The wrapping device 1 shown in Figs. 6 to 9 corresponds, with the exception of the drive device 5, to the wrapping device 1 of the embodiment shown in Figs. 1 to 5.
[0054] The drive unit 5 comprises an electric motor (not shown) and a drive belt 30 that can be moved around the packaged item 2 by means of the electric motor. The fixing device 3 is attached to the drive belt 30 via a connecting plate 23 and a cantilever 24 arranged thereon, such that the drive belt 30 is arranged parallel to the cam 11 along the pivot axis 18. The drive belt 30 can be moved around the packaged item 2 by means of the motor. The drive belt 30 is supported and movable by four rollers 25 arranged internally, essentially in a rectangular shape.
[0055] Fig. 10 shows in a schematic representation steps of a method according to an embodiment of the present invention.
[0056] In a first step S1, a packaging material start is provided that has been fixed in the fixing unit 4. This packaging material start can be set manually by the user or automatically as part of a packaging operation in the fixing unit 4.
[0057] Subsequently, in step S2, the fixing device 3 is moved around the packaged item 2 in a wrapping motion by means of the drive device 5 and fed to a closing device 26. The packaging material is pulled along by a supply of packaging material 6 that is stationary in and / or on the packaging machine.
[0058] Regarding further advantageous embodiments of the wrapping device, the packaging machine and the method according to the invention, reference is made to the general part of the description and to the attached claims to avoid repetition.
[0059] Finally, it should be expressly pointed out that the exemplary embodiments of the wrapping device, the packaging machine and the method according to the invention described above serve only to discuss the claimed teaching, but do not limit it to the exemplary embodiments.
[0060] Reference to the list of symbols
[0061] 1 wrapping device
[0062] 2 packages
[0063] 3 Fixing device
[0064] 4 Fixing unit
[0065] 5 Drive unit
[0066] 6 packaging materials in stock
[0067] 7 Recording room
[0068] 8 Implementation
[0069] 9. Guide system
[0070] 10 Backstage Tour
[0071] 11 Scenery
[0072] 12 outer guide edge
[0073] 13 inner recess
[0074] 14 Contact element
[0075] 15 packing table
[0076] 16 Coupling device
[0077] 17 Swivel joint
[0078] 18 Swivel axis
[0079] 19 Envelopment level
[0080] 20 Swivel plane
[0081] 21 Corner area of the packaged goods
[0082] 22 ring bodies
[0083] 23 Connecting plate
[0084] 24 outriggers
[0085] 25 rolls
[0086] 26 Locking device
[0087] 27 Clamping device
[0088] 28 Brake device
[0089] 29 clamping elements
[0090] 30 drive belts
[0091] 31 lane
[0092] S1-S2 steps of the procedure
Claims
Claims 1. Wrapping device (1) for a packaging machine for guiding a packaging material, such as a cord or a band, around a packaged item (2), comprising a fixing device (3) with a fixing unit (4), in particular a clamping head, for fixing a packaging material start and a drive device (5), wherein the fixing device (3) with the fixed packaging material start can be moved by means of the drive device (5) in a wrapping motion around the packaged item (2), wherein the packaging material can be pulled along by a supply of packaging material (6) arranged stationary in and / or on the packaging machine, characterized by a guide device (9), wherein the fixing device (3) is guided by the guide device (9) during the wrapping motion such that the fixing unit (4) can be moved along a definable path (31).
2. Wrapping device (1 ) according to claim 1 , characterized in that the guide device (9) comprises a cam guide (10) with at least one cam (11 ) or at least one guide element.
3. Wrapping device (1) according to claim 1 or 2, characterized in that the fixing device (3) and / or the drive device (5) has at least one contact element (14) in operative connection with the guide device (9), in particular the at least one cam (11) or the at least one guide element.
4. Wrapping device (1 ) according to claim 3, characterized in that the at least one contact element (14) comprises a roller and / or a sliding element and / or a gear element, such as a gear.
5. Wrapping device (1) according to one of claims 1 to 4, characterized in that the fixing device (3) and the drive device (5) are connected to each other via a coupling device (16) in a relatively displaceable manner.
6. Wrapping device (1 ) according to claim 5, characterized in that the coupling device (16) comprises a pivot joint (17) wherein the fixing unit (4) is pivotable relative to the drive device (5), preferably wherein a pivot axis (18) associated with the pivot joint (17) is perpendicular to a wrapping plane (19) described by the wrapping movement.
7. Wrapping device (1) according to one of claims 1 to 6, characterized in that the track (31 ) and / or the at least one cam (11 ) or the at least one guide element corresponds to a cross-sectional contour of the packaged goods (2), preferably wherein the cross-sectional contour is assigned to a cross-section of the packaged goods (2) along a wrapping plane (19) described by the wrapping movement.
8. Wrapping device (1) according to one of claims 1 to 7, characterized in that the web (31 ) is defined such that the fixing unit (4) has a greater distance to the packaged item (2) during the wrapping of corner areas (21 ) of the packaged item (2) than during the remaining part of the wrapping movement.
9. Wrapping device (1) according to one of claims 1 to 8, characterized in that the drive device (5) comprises a motor, in particular an electric motor, and a ring body (22) rotatable around the packaged goods (2) by means of the motor and / or a drive belt (30) movable, wherein the fixing device (3) is fixed indirectly or directly to the ring body (22) and / or the drive belt (30).
10. Wrapping device (1 ) according to claim 9, characterized in that the ring body (22) and / or the drive belt (30) is mounted over at least three, in particular four, rollers (25).
11. Wrapping device (1 ) according to one of claims 1 to 10, characterized in that the wrapping device (1) has a passage for placing and moving the packaged goods (2) through it.
12. Wrapping device (1 ) according to one of claims 1 to 11 , characterized in that the beginning of the packaging material, preferably at the end of the wrapping movement, can be fed to a closure device (26), preferably centrally, below or laterally of the packaged goods (2).
13. Wrapping device (1 ) according to one of claims 1 to 12, characterized in that the wrapping device (1 ) has a tensioning device (27) for pre-tensioning the packaging means, preferably before and / or during a packaging operation.
14. Wrapping device (1) according to claim 13, characterized in that the clamping device (27) comprises a braking device (28) and / or an active pulling device.
15. Packaging machine for packaging a product (2) with a packaging means, comprising a wrapping device (1) according to one of claims 1 to 14 and a closure device (26), in particular a knotting device.
16. Packaging machine according to claim 15, characterized in that the closure device (26) is arranged, preferably centrally, below or laterally, of the packaged goods (2).
17. Method for guiding a packaging means, such as a cord or a strap, around a packaged item (2) with a wrapping device (1) according to any one of claims 1 to 14, comprising the steps of: - providing (S1) a packaging means fixed in the fixing unit (4) Packaging materials initially, and Moving (S2) the fixing device (3) around the packaged item (2) in a wrapping motion by means of the drive device (5).