EP3326924B1 - Packaging device and packaging method - Google Patents

Description

The invention relates to a baling press with a packaging device and a packaging method for highly compressed bales with the features of the independent method and device claims.

A baler with a packaging device for highly compressed bales is out EP 0 695 690 A1 known. It is designed as a carousel baler with press rams moving in a circle. On both sides of the bale, the packaging device has a supply device with a film roll holder in addition to a single standing film roll in the operating position, as well as a jacket folding unit that can be moved along the side of the bale. The film ends of both film rolls are connected to one another, with a stretched film wall being stretched and held between the film rolls. The film rolls are each rotatably and fixedly arranged tangentially outside the circular path of the press ram. The two-sided jacket folding units take the film wall with them by their movement along the stationary pressed bale, pull the film off the film rolls and attach an annular film jacket to the pressed bale.

the WO 03/006318 A1 teaches a packaging device for highly compressed bales, in which the ram is rotated and pulls the film off a coil.

Another packaging device for highly compressed bales on a baler is from the EP 0 294 820 B1 known. The packaging device has a supply device for a film web and a wrapping device for attaching a surrounding film jacket to the pressed bale held between press rams, which form a spatial and kinematic unit and are arranged together on a means of transport. The packaging device stretches a film curtain and places it around the side of the pressed bale as a belly band.

the EP 0 528 892 B1 shows a variant of such a packaging device with a different structural design of the supply device and the wrapping device.

From the EP 1 029 786 A2 a packaging device for palletized stacks of goods is known, in which the stacks of goods are moved on a conveyor through a stationary, stretched film curtain. Due to their transport movement, the stacks of goods take the film curtain with them and apply the film.

It is the object of the present invention to show a better packaging technique.

The invention solves this problem with the features in the main claim of the method and device.

The packaging technology claimed, in particular the packaging device and the packaging method, have the advantage of increased performance and improved safety.

Due to the spatial separation, the supply device can be at a distance from the pressed bale or from the baler and thus outside of a Be arranged safety area on the baler. This allows a change or replenishment of packaging material, in particular laps or coils, without disrupting or stopping the baling press for safety reasons.

The supply device is arranged in a stationary manner, which makes it easier to access, handle and change the packaging material, in particular coils. The storage capacity is increased significantly. There is enough space for replacement coils. The diameter and weight of the coils and replacement coils can be significantly larger than in the prior art at the beginning. In addition, the connection of the web ends when changing coils can be done much more easily and quickly, especially when the coils are lying flat.

The supply device has a receptacle for a supply of packaging material in the form of a coil in the operating position and at least one further receptacle (12) for a replacement coil in the standby position. It can also have a web guide for feeding the packaging material to the wrapping device. The web guide can have a high-lying guide arm for the packaging material which is arranged above the pressed bale that is held. The web guide, in particular the guide arm, can have a connection for attachment to a press stand of the baling press.

Further advantages are the space and weight savings on the means of transport, which only has to transport the wrapping device. This can also lead to improvements in the acceleration and travel speed of the means of transport, which also has a performance-enhancing effect. Improved accommodation options for one are also favorable or several additional devices on the means of transport, eg a strapping device.

The packaging technology used is particularly suitable for powerful baling presses. A baling press can also be subdivided into a pre-press area and a main press area. The claimed packaging technology can also be supplemented for the attachment of additional packaging materials, e.g. a stretch hood. In addition, there is the possibility of attaching an upper and / or lower cover film to the pressed bale, which can happen during the pressing.

Further advantageous embodiments of the invention are specified in the subclaims.

Figur 1:

eine Seitenansicht einer Ballenpresse mit einer Verpackungseinrichtung mit einer Versorgungseinrichtung und einer Einhüllvorrichtung,

Figur 2:

eine perspektivische Ansicht der Zuführeinrichtung einer Einhüllvorrichtung,

Figur 3:

eine Frontansicht einer Einhüllvorrichtung mit zwei beidseits des Pressballens angeordneten Zuführeinrichtungen gemäß Blickrichtung III von Figur 2,

Figur 4:

eine Seitenansicht einer Zuführvorrichtung gemäß Pfeil IV von Figur 3,

Figur 5:

einen Schnitt durch eine Zuführvorrichtung gemäß Schnittlinie V-V von Figur 4,

Figur 6:

eine perspektivische Ansicht einer Versorgungseinrichtung,

Figur 7:

eine Seitenansicht der Versorgungseinrichtung von Figur 6,

Figur 8:

eine Frontansicht der Versorgungseinrichtung gemäß Pfeil VIII von Figur 7,

Figur 9:

einen Schnitt durch die Versorgungseinrichtung gemäß Schnittlinie IX-IX von Figur 8 und

Figur 10:

eine perspektivische Ansicht der Verpackungseinrichtung von Figur 1 bis 9 und eines Teils der Ballenpresse.

The invention is shown schematically and by way of example in the drawings. Show in detail:

Figure 1:

a side view of a baler with a packaging device with a supply device and a wrapping device,

Figure 2:

a perspective view of the feed device of a wrapping device,

Figure 3:

a front view of a wrapping device with two feed devices arranged on both sides of the pressed bale according to direction III of FIG Figure 2 ,

Figure 4:

a side view of a feed device according to arrow IV of Figure 3 ,

Figure 5:

a section through a feed device according to section line VV of Figure 4 ,

Figure 6:

a perspective view of a supply device,

Figure 7:

a side view of the utility device of FIG Figure 6 ,

Figure 8:

a front view of the supply device according to arrow VIII of Figure 7 ,

Figure 9:

a section through the supply device according to section line IX-IX of Figure 8 and

Figure 10:

FIG. 3 is a perspective view of the packaging device of FIG Figures 1 to 9 and part of the baler.

The invention relates to a baling press (1) with a packaging device (2) and a packaging method for highly compressed bales (3).

The pressed bales (3) are made of textile fibers, in particular natural fibers or synthetic fibers, and are then packed with the packaging device (2).

Figure 1 shows a side view of a baling press (1) which is designed, for example, as a vertical press and which has a filling area and, if necessary, a pre-pressing area as well as a finished or main pressing area. It can be an in Figure 1 Act shown carousel press, which has the filling and pre-pressing area on the left and the finishing pressing area on the right.

Figure 10 also shows the carousel press (1) in a broken view with the turntable, the lower press rams (31) and a press bale (3) in a perspective view looking from the other side.

The baler (1) has a high press capacity. You can, for example, according to the WO 2012/101250 A1 be designed and have two parallel feed shafts for filling one or more press boxes (4). In the press box (4), the press bale (3) can be compressed with high pressure between the upper and lower press rams (31). The baling press (1) is assigned a packaging device (2) with which the pressed bale (3) held between the press rams (31) is packaged after the press box (4) has been removed.

The packaging device provides the pressed bale (3) with a bale packaging (5) which covers several or all sides of the pressed bale (3) and which consists at least partially of a web-shaped packaging material (8). The bale packaging (5) is formed at least by a ring-like jacket sheet (7) made of packaging material (8), which is also referred to as a belly bandage, which is placed around the lateral ball surfaces (32). It wraps around and covers the lateral ball surfaces (32) which are exposed and accessible between the press rams. In addition, a cover film (6) can be attached to the top and / or bottom of the pressed bale (3).

The attachment of such cover sheets (6) can, for example, according to FIG EP 0 528 893 B1 with the introduction of a foil blank on the press ram (31) before pressing the bale and with the subsequent turning over and placing of the cover foil (6) on the side surfaces of the pressed bale (3). Alternatively, one or more cover films (6) can be dispensed with.

The packaging device (2) has a supply device (9) for the web-shaped packaging material (8) and a wrapping device (10) for attaching the ring-like casing web (7) to the pressed bale (3) held between the press ram (31). The web-shaped packaging material (8) is preferably designed as a flexible film web made of a plastic material, e.g. made of polyethylene or polypropylene. Alternatively, sheet-like packaging materials made of other materials, e.g. also metallic materials or composite materials, are possible.

In the exemplary embodiments explained below, film webs and jacket films (7) are present and described. You can also apply to others accordingly Web-shaped packaging materials (8), material webs, web curtains and jacket webs (7) can be adapted.

The wrapping device (10) is equipped with an in Figure 1 indicated transport means (20) relative to the pressed bale (3) and to the stationary baling press (1) arranged movably. The supply device (9) is spatially and kinematically separated from the wrapping device (10). The supply device (9) is arranged in a stationary manner.

The supply device (9) has a receptacle (12) for a web supply (11) of packaging material (8). In the exemplary embodiments shown, this web supply (11) is designed as a roll or coil, the receptacle (12) being designed as a rotatable coil receptacle for unwinding the coil. The supply device (9) has two coil receptacles (12) for a coil (11) in the operating position and for a replacement coil (11) in the standby position. The receptacles (12) are arranged on a frame (14) on which controllable and driven conveying means (16), e.g. drive rollers, for the coil withdrawal and transport of the packaging material (8) are arranged. A device for connecting the web ends when changing coils can also be arranged in the area of the receptacles (12).

The receptacle (s) (12) is / are arranged at a spatial distance from the pressed bale (3) and possibly from the baling press (1) and in a stationary manner. A web guide (13) is provided for feeding the packaging material (8) from the receptacle (12) to the wrapping device (10). This bridges the distance to the pressed bale (3) that is held and has a guide arm (15) for the packaging material (8), which is located above the pressed bale (3) and the wrapping device (10). On the guide arm (15) the packaging material (8). Supporting and guiding means (33), for example freely rotatable rollers, and possibly conveying means (16) can be arranged on the guide arm (15). The web guide (13), in particular the guide arm (15), is on the one hand part of the frame (14) or is arranged on it and, on the other hand, has a connection at the front free end for attachment to a support part of the baler (1), in particular to a press stand (17), on. At the free end there can also be pulleys (33) for the packaging material (8). From the stationary free end, the film web (8) is fed to an inlet (29) of the movable wrapping device (10).

The coils (11) are arranged lying down, in particular horizontally, the withdrawn packaging material (8) also assuming a lying position on the guide arm (15), which is preferably oriented horizontally. In this position it is fed to the wrapping device (10). The high-lying arrangement of the guide arm (15) and the packaging material (8) in this area allows lateral access to the pressed bale (3) on the baling press (1). This access can be used on the one hand for manual handling or for other manual work on the pressed bale (3). On the other hand, a removal device (not shown) or other automatic devices for bale handling can also be arranged here. The means of transport (20) can also be moved out of this access area into a rest position and allow access.

The wrapping device (10) has a variable web store (23) for the supplied packaging material (8). As a result, the travel movement of the means of transport (20) and the supply line for the packaging material (8) from the supply device (9) can be compared with one another, so that a low-stress, safe transport of the packaging material (8) is possible. This is particularly true when, as in the embodiment shown in FIG Figure 1 the direction of travel of the means of transport (20) when the jacket film (7) is applied and the direction of feed of the packaging material (8) are in opposite directions.

The web memory (23) takes, for example, the length of the film web required for the associated jacket film area and is emptied when the jacket film (7) is put on. This takes place during the forward movement of the wrapping device (10) and its transport means (20). During this movement, the supply device (9) can replenish the packaging material (8) which is refilled into the web store (23) during the backward movement.

In the preferred embodiment, the web store (23) is designed as a controllable dancer (24) with tensioning rollers (25, 26) for the packaging material (8) that can be adjusted relative to one another. Figure 5 illustrates this arrangement in a section and looking from above. In the dancer (24), several tension loops of the web-shaped packaging material (8) are formed between the stationary tensioning rollers (25) and the movable tensioning rollers (26) arranged on a controllable tensioning carriage.

On the input side, the web store (23), in particular the dancer (24), is preceded by a web deflection (22) with which the horizontally fed film web (8) is rotated through 90 ° into an upright position, with which the jacket film (7) is wrapped around the Press bale (3) is placed. The tensioning rollers (25, 26) also have an upright position. The web deflection (22) can, for example, via an in Figure 3 shown inclined and rounded guardrail.

The inlet (29) of the wrapping device (10) with deflection rollers that take over the web-shaped packaging material (8) from the front end of the guide arm (15) is arranged above the web deflection (22). Figure 1 and 4th show this arrangement.

The wrapping device (10) can also have controllable and driven conveying means (27) for the web-shaped packaging material (8). On the output side of the web store (23), in particular the dancer (24), the packaging material (8) is looped to pulleys on a rear support arm and from there back to an outlet (30) of the wrapping device (10), where the packaging material (8) in the direction of the pressed bale (3) according to Figure 2 and 3 exit. The outlet (10) can according to Figure 5 be movable transversely to the pressed bale (3) and have a controlled extendable and eg driven by a cylinder carriage with upright guide rollers.

As Figure 3 illustrated, the wrapping device (10) can stretch a film curtain (21) which extends across the pressed bale (3) and its rear face and which then moves around the pressed bale (3) in a U-shape when the wrapping device (10) moves. placed and closed at the other front end to form a ring. For this purpose, the wrapping device (10) has a separating and welding device (28) which is arranged on the movable outlet (30) or in the vicinity thereof. The separating and welding device (28) can be arranged so that it can be advanced towards the pressed bale (3), it being located, for example, on the carriage of the outlet (30).

The separating and welding device (28) on the one hand closes the jacket film (7) formed by means of the film curtain (21) at the front end and thereby separates the jacket film (7) from the supplied packaging material (8). It connects, in particular welded, the ends of the cladding film (7) to one another. At the same time, the free ends of the supplied packaging material (8) produced during the separation process are also connected to one another, a closed film curtain (21) being formed again. After the pressed bale (3) provided with the jacket film (7) has been removed from the baling press (1), the wrapping device (10) can be reinserted into an in Figure 1 Move back the starting position shown.

The wrapping device (10) can be constructed in different ways. In particular, it can be designed in one piece or in several pieces.

In the embodiment shown, a multi-part wrapping device (10) has two feed devices (18, 19) which are arranged on both sides of the pressed bale (3) and the baling press (1) and which each have their own transport means (20) designed, for example, as a trolley. exhibit. The feed devices (18, 19) each have the aforementioned design of the wrapping device (10) with the web deflection (22), the web store (23) and the conveying means (27), the said film curtain (21) being arranged between the two opposite one another in mirror image and feeding devices (18, 19) that are moved synchronously are clamped. Figure 3 shows this arrangement. The cutting and welding device (28) can be assigned in whole or in part to one or both feed devices (18, 19).

The welding device (28) is designed in any suitable manner. It can work with heating bars or heating wires with a higher temperature, which are suitable for PE foils, for example. For temperature-sensitive PP films, in particular so-called ribbon films, the Welding device (28) work with ultrasound. The separating and welding device (28) can be in one of the EP 0 294 820 B1 and / or the EP 0 528 892 B1 be constructed and function accordingly.

The two feed devices (18, 19) are each connected to their own supply device (9) of the type described above, so that the packaging material (8) is fed to both sides of the pressed bale (3) or the baling press (1).

In another variant of the packaging device (2), not shown, a single and one-sided arrangement of a supply device (9) in connection with a single wrapping device (10) can be provided, with only one web (8) of packaging material on one side of the bale from the stationary Supply device (9) of the wrapping device (10) is supplied. The latter can consist of several parts and, for example, according to the EP 0 528 892 B1 be designed, with a film intake and on the other a transversely extendable film arm are arranged on one side of the bale and are each located on a transport means (20).

Modifications of the embodiments shown and described are possible in various ways. This concerns the structural design and arrangement of the wrapping device (10) and the baling press (1). In particular, the features of the exemplary embodiments described above and their modifications can also be combined with one another and also interchanged within the scope of the claims.

The bale packaging (5) or the pressed bale (3) provided with a jacket film (7) can then be supplemented with an expansion hood or another packaging means.

The baler (1) can have a different structural design. It can, for example, be designed as a horizontal press and have vertically aligned press rams. The packaging device (2) is designed and arranged accordingly to adapt to this. In this case, the jacket (7) is placed around horizontal and vertical free side surfaces (32) of the pressed bale (3). Furthermore, the baling press (1) can have locally and functionally separate pre-press and finished press areas. It can in particular be designed as a press system with several prepresses and a common finishing press. The packaging device (2) is arranged on a possibly stand-alone finishing press (1).

REFERENCE LIST

1

Baler

2

Packaging facility

3

Pressed bales

4th

Press box

5

Bale wrapping

6th

Cover sheet

7th

Jacket membrane, jacket film, jacket

8th

Packaging material, film web

9

Utility

10

Wrapping device

11th

Web supply, film supply, coil

12th

Pick-up, stationary coil pick-up

13th

Web guide

14th

frame

15th

Guide arm

16

Funding

17th

Press stand

18th

Feeding device

19th

Feeding device

20th

Means of transport, trolley

21

Foil curtain, rail curtain

22nd

Web deflection

23

Web storage

24

dancer

25th

Stationary tension pulley

26th

Movable tension pulley

27

Funding

28

Separating and welding device

29

inlet

30th

Outlet

31

Press ram

32

Side face

33

Guide means, pulley

Claims (14)

1. Baling press for highly compacted compressed bales (3), with a packaging device (2) which has a supply device (9) for a web-like packaging material (8), in particular a film web, and a wrapping apparatus (10) for applying an annular surrounding sleeve web (7), in particular a film sleeve, to the free lateral surfaces (32) of the compressed bale (3) held between press rams (31), wherein the wrapping apparatus (10) is arranged so as to be movable relative to the compressed bale (3) by a transport means (20), and the supply device (9) is arranged in a manner separated spatially and kinematically from the wrapping apparatus (10), wherein the supply device (9) is arranged in a stationary manner and has a receptacle (12) for a web supply (11), which is in the form of a coil, of packaging material (8) in an operating position, characterized in that the supply device (9) has at least one further receptacle (12) for a replacement coil in a standby position, wherein the receptacles (12) are arranged on a frame (14) on which controllable and driven conveying means (16), in particular driving rollers, for taking off the coil and transporting the packaging material (8) are also arranged.
2. Baling press according to Claim 1, characterized in that the receptacle (12) is configured as a rotatable coil receptacle for unrolling the coil.
3. Baling press according to Claim 1 or 2, characterized in that the coils are changeable without disrupting or shutting down the baling press.
4. Baling press according to one of the preceding claims, characterized in that an apparatus for connecting the web ends during the coil change is also arranged in the region of the receptacles (12).
5. Baling press according to one of the preceding claims, characterized in that the coils (11) are arranged in a lying manner, in particular horizontally.
6. Baling press according to one of the preceding claims, characterized in that the wrapping apparatus (10) has a web deflector (22) and in particular a cutting and welding apparatus (28) for the packaging material (8).
7. Baling press according to one of the preceding claims, characterized in that the supply device (9) is arranged at a distance from the compressed bale (3) and from the baling press (1) and outside a safety region on the baling press (1).
8. Baling press according to one of the preceding claims, characterized in that the wrapping apparatus (10) has a variable web store (23) for the packaging material (8), wherein in particular the web store (23) is configured as a controllable dancer (24) having tensioning rollers (25, 26) for the packaging material (8) that are adjustable relative to one another.
9. Baling press according to one of the preceding claims, characterized in that the packaging device (2) has two supply devices (9) and the wrapping apparatus (10) has two feed devices (18, 19) that are arranged on either side of the compressed bale (3) on in each case one transport means (20) and are each connected to a supply device (9) and that are provided and configured to stretch an upright web curtain (21), in particular a film curtain, between one another and to lay the latter laterally around the compressed bale (3).
10. Baling press according to one of Claims 1 to 8, characterized in that the packaging device (2) has a single and one-sided arrangement of a supply device (9) in conjunction with a single wrapping apparatus (10), wherein only one web (8) of packaging material (8) is fed on one bale side from the stationary supply device (9) of the wrapping apparatus (10).
11. Method for packaging highly compacted compressed bales (3) on a baling press (1) by means of a packaging device (2), wherein a wrapping apparatus (10) is moved relative to the compressed bale (3) by a transport means (19) and applies an annular sleeve (7) made of a web-like packaging material (8), in particular a film web, to the free lateral faces (32) of the compressed bale (3) held between press rams (31), wherein the web-like packaging material (8) is fed to the wrapping apparatus (10) from a supply device (9) which is arranged in a manner separated spatially and kinematically from the wrapping apparatus (10), wherein the supply device (9) is arranged in a stationary manner and has a receptacle (12) for a web supply (11), which is in the form of a coil, of packaging material (8) in an operating position, characterized in that the supply device (9) has at least one further receptacle (12) for a replacement coil in a standby position, wherein the receptacles (12) are arranged on a frame (14) on which controllable and driven conveying means (16), in particular driving rollers, for taking off the coil and transporting the packaging material (8) are also arranged.
12. Method according to Claim 11, characterized in that the coils are changeable without disrupting or shutting down the baling press.
13. Method according to Claim 11 or 12, characterized in that the web ends are connected during the coil change, in particular with lying coils.
14. Method according to Claim 11, 12 or 13, characterized in that the compressed bale (3) provided with a sleeve film (7) is subsequently supplemented by a stretch hood or some other packing means.

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