EP3787976A1

EP3787976A1 - Film-wrapping apparatus

Info

Publication number: EP3787976A1
Application number: EP19720570.1A
Authority: EP
Inventors: Clemens FRISCH
Original assignee: Springer Maschinenfabrik GmbH
Current assignee: Springer Maschinenfabrik GmbH
Priority date: 2018-05-02
Filing date: 2019-04-29
Publication date: 2021-03-10
Anticipated expiration: 2039-04-29
Also published as: PL3787976T3; CA3098951A1; US11034471B1; AT521015A4; EP3787976B1; AT521015B1; CA3098951C; WO2019211228A1

Abstract

For a film-wrapping apparatus (1) for the automatic film-wrapping of articles (2), comprising a conveying device (3) for conveying an article (2) through a film-wrapping channel (4) of the film-wrapping apparatus (1), wherein, for the purpose of supplying film material (5) for the film-wrapping of the article (2), the film-wrapping apparatus (1) has a film-supply device (6) which - as seen in the operating position - is arranged above the film-wrapping channel (4), the film-wrapping apparatus (1) also comprising at least two movably arranged grippers (7) and a sealing device (8), according to the invention, the at least two grippers (7) are predefinably movably arranged between a supply position (9) and a sealing position (10), the grippers (7) being designed so that, in the supply position (9), they grip two opposite corners of the film material (5) supplied by the film-supply device (6) and pull said film material from the supply position (9) into the sealing position (10) and hold the material, and, in the sealing position (10), said grippers (7) are arranged in a sealing plane (12) and substantially level with an upper side (11) of the conveying device (3); and the sealing device (8) is designed to seal the two side edges (13) of the article (2) which are arranged in the sealing plane (12) and are sheathed by film material (5).

Description

Foiling device

The invention relates to a filming device for fully automatic filming of goods according to the preamble of claim 1.

Foliation devices are used to cover or wrap goods with a film. For example, the goods are in

Sawn timber production plants mainly manually or semi-automatically packaged, with mostly brackets made of plastic or light metal or nails for positioning or fixing the film used as an aid. Automatic filming devices often use film hoods to foil goods.

In general, the film is applied to the material to be foiled and provided with a strapping or put over the goods as a prefabricated film hood and then fixed with staples or nails or an additional strapping. The adaptation of the film to the different dimensions of goods is usually carried out by a film exchange on a film dispenser.

A disadvantage of such Folierungsvorrichtungen is that prefabricated film hoods always require the same dimensions of the goods, which is why film hoods do not allow flexibility in terms of the dimensions of the goods. In order to adapt the film to the respective dimensions of the goods, the film dispenser must be converted over time. Furthermore, automatic filming devices usually require a large amount of space and / or they require a complicated and expensive mechanism and increased processing times. Manual and

Semi-automatic foliation processes are not only cumbersome and cumbersome, but due to various personnel-demanding steps also correspondingly personnel, cost and time-consuming.

The object of the invention is therefore to provide a foliation device of the type mentioned, with which the mentioned disadvantages can be avoided, with which a simple, space-saving and fully automatic foiling of goods can be accomplished.

This is achieved by the features of claim 1 according to the invention. This has the advantage that the foliation process is uncomplicated and fully automatic. Thus, the operating staff is relieved, since no human steps for the wrapping of the goods are required and can be saved according to employee costs. Furthermore, a simple, reliable and fully continuous operation of the filming device is made possible. Due to the automation will also increase the efficiency of

Foaming device increased. Furthermore, there is the advantage that no

Fixing elements such as staples or nails are needed to position the film on the estate and / or to fix, whereby visually appealing results of high quality are possible. Since the available space is often very limited in various systems and production areas, another advantage of the filming device is that the filming device can be shorter in size than the product to be foiled. Due to the space-saving design, the filming device is therefore also for

Production rooms with limited space suitable. By the

Welding of both wrapped with foil side edges of the estate by the welding device in the welding plane on the one hand, the processing time and on the other hand, the space requirement of the filming device kept low because the good for one or more welding steps does not have to be rotated or raised. Since the grippers grip the film only at its opposite corners and pull and hold from the ready position to the welding position, can be on a complex and space-demanding mechanics as used, for example, in articulated robot arms used, and it is further automatically finds a certain tightening of Foil instead, whereby kinks and wrinkles of the same, disposed in the welding position Good avoided. Another advantage of the simple design of the gripper and the welding device is that these components require little maintenance due to their simplicity. Due to the welding of the side edges of the Guts a multi-layered film is avoided on Good, as film overhangs not

must be handled. Since the respective material 2 is foiled with a perfect fit, additional positioning or fixing means can be dispensed with.

Furthermore, the invention relates to a method for operating a

Foiling apparatus according to claim 10. The object of the invention is therefore further to provide a method by which the mentioned disadvantages can be avoided, with which a simple, space-saving and fully automatic foiling of goods can be accomplished.

This is achieved by the features of claim 10 according to the invention.

The advantages of the method correspond to the advantages of the device.

The subclaims relate to further advantageous embodiments of the invention.

It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.

The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:

Fig. 1 a-1 e is a schematic representation of individual method steps in

Side view;

Fig. 2 shows a preferred embodiment of the filming device in

axonometric view;

3 shows a preferred embodiment of the filming device in front view; 4 shows the section along the line A-A in Fig. 3.

Fig. 5 shows the detail B of Figure 4 in an enlarged view;

6 shows the section along the line C-C in Fig. 3.

FIG. 7 a side view of a preferred embodiment of the filming device; FIG.

Fig. 8 shows the section along the line A-A in Fig. 3 with a on the

Conveyor located Good;

9 shows a preferred embodiment of the filming device with a on the conveyor located Good in front view;

10 shows a preferred embodiment of the filming device with a material located on the conveyor in axonometric view;

11 shows a further preferred embodiment of the foiling device in axonometric view;

Fig. 12 shows the further preferred embodiment of the filming device in side view and

Fig. 13, the further preferred embodiment of the filming device with a material located on the conveyor in axonometric view.

Figures 1a to 13 show at least parts of preferred embodiments of a filming apparatus 1 for automatically wrapping goods 2 comprising a conveyor 3 for conveying a stock 2 through a filming duct 4 of the filming apparatus 1, the filming apparatus 1 for providing film 5 for wrapping of the item 2 has - viewed in the operating position - above the Folierungskanals 4 arranged film providing device 6, wherein the filming device 1 further comprises at least two movably arranged gripper 7 and a welding device 8. In FIGS. 2 to 10, not all features are provided with reference numerals.

The filming device 1 serves to cover goods 2 with film 5,

or to encase, in order to protect the goods 2 from external environmental effects. The word goods 2 denotes any kind of piece goods,

but especially stacks of goods 2 and more preferred

Lumber pile. The conveyor 3 conveys a good 2 through the

Folierungskanal 4 of the filming device 1 in a conveying direction 14. The speed of transport of Guts 2 is adjustable. The Folierungskanal 4 is the area in which the goods 2 are foiled. The filming channel 4 can also be seen as that volume which is delimited by the conveyor 3 and the film supply device 6. The film 5 may consist of a plastic such as polyethylene or a tear-resistant fabric. In operating position, the film supply device 6 is above of the Folierungskanals 4, which is exemplified in Fig. 8. The material 2 is sheathed in particular on five sides with the film 5. More specifically, the material 2 is encased in particular on the two side surfaces, on the two end faces 15, 17 and on the upper side 20 with the film 5. By operating position, it is meant that the foaming device 1 is constructed ready for operation and is not tilted at an angle, as might be the case, for example, in a transport state during transport.

Figs. 1a-1e show a schematic exemplary representation of individual

Process steps, wherein a good 2 is moved in the conveying direction 14 through the Folierungskanal 4 and is foiled. In the welding plane 12 in each case one, in particular triangular and double-layered, film projection 16 is welded to the side edges of the respective two end faces 15, 17 of the product 2 by the welding device 8, which is exemplified in the highlighted front views of the respective end face 15, 17 of the product 2 in FIG Fig. 1c and in Fig.1 e is shown.

The filming device 1 comprises at least two grippers 7 arranged in a movable manner. The grippers 7 may have at least one, preferably more than one clamping device or pliers for gripping the film 5. At least one gripper 7 can also have a clamping strip for gripping the film. The

Film supply device 6 provides the film 5 for wrapping the goods 2 ready. The welding device 8 welds the film 5 to the goods 2. The grippers 7 grip the film 5 at opposite corners in the ready position 9. The ready position 9 can be seen with respect to the grippers 7 as the position in which the grippers 7 of the film supply device 6 are spatially closest to each other and in which the film providing device 6, the film 5 for the gripper 7 ready to take over ready provides, which is exemplified in Fig. 4 and in Fig. 5. FIG. 5 further shows, by way of example, how a gripper 7 grips the film 5 provided by the film supply device 6. The gripper 7 is arranged on a moving device 21.

The grippers 7 are designed to pull the film 5 from the ready position 9 into a welding position 10. In the welding position 10, the grippers 7 are spatially furthest away from the film supply device 6 in the operating state. In the welding position 10, the grippers 7 are further in the welding plane 12 and arranged substantially at the level of an upper side 11 of the conveyor 3, which is exemplified in Fig. 8. The welding plane 12 is that plane in which the film 5 is welded to the material 2, in particular to two side edges 13 of the product 2 sheathed with film 5. The welding plane 12 can be regarded as an imaginary plane, which is arranged parallel to the end face 13 of the product 2, in particular positionally stable. The upper side 11 of the conveyor 3 is defined as that side of the conveyor 3 on which the product 2 is arranged in the operating state, which is shown by way of example in FIG.

It is provided that the at least two grippers 7 between the

Provision position 9 and the welding position 10 are predeterminably arranged movable, wherein the grippers 7 are formed by the

Foil providing device 6 provided in the film

To grab supply position 9 at two opposite corners and to pull from the supply position 9 in the welding position 10 and to hold, the gripper 7 in the welding position 10 in a welding plane 12 and in the

Essentially at the height of the top 11 of the conveyor 3 are arranged, and that the welding device 8 is formed to weld both arranged in the welding plane 12 and covered with foil 5 side edges 13 of the Guts 2.

For parallelepiped material 2, the welding plane 12 is substantially normal to the conveyor 3 and transverse to the conveying direction 14. The grippers 7 are arranged in the welding position 10 in the welding plane 12 and substantially at the level of the top 11 of the conveyor 3, to ensure that the film 5 extends substantially to a lower edge of the Guts 2 during welding.

Furthermore, a method for operating a Folierungsvorrichtung 1 is provided, to be foiled Good 2 by means of a conveyor 3 by a

Folierungskanal 4 of the foaming device 1 is conveyed, wherein film 5 is provided for foiling the Guts 2 from above the Folierungskanals 4 arranged film providing means 6, wherein at least two movably arranged gripper 7 in a staging position 9 provided by the film providing means 6 film 5 to two

grabbing opposite corners, wherein the, holding the film 5 gripper 7 of the supply position 9 are moved to a welding position 10, wherein the grippers 7 are arranged in the welding position 10 in a welding plane 12 and substantially at the level of an upper side 11 of the conveyor 3, wherein the material to be foiled 2 is moved by means of the conveyor 3, until a first end face 14 of the product 2 is arranged in the welding plane 12, wherein the foil 5 is folded at side edges 13 of the first end face 15 of the product 2 by the gripper 7 arranged in the welding position 10 and holding the film

Film protrusions 16 arise, wherein the film 5 is welded in a first welding step by means of a welding device 8 at both side edges 13 of the product 2 in the welding plane 12.

The conveyor 3 extends in particular over the length of the

Folierungskanals 4 and conveys the Good 2 through the Folierungskanal 4. Die

Conveyor 3 may preferably be designed as a conveyor belt, particularly preferably as a roller table or as a longitudinal conveyor with telescopic conveyor and protrude beyond the length of the Folierungskanals 4. The foaming device 1 may preferably have means for variable height adjustment of the conveyor 3, so that variable scale wood dimensions or a transport without stumps can be considered. The material 2 is moved by means of the conveyor 3 until the first end face 14 of the product 2 is arranged in the welding plane 12. In a cube or cuboid Good 2 are both accordingly

Side edges 13 of the first end face 14 of the Guts 2 arranged in the welding plane 12. In particular, both side edges 13 can be welded at the same time by means of the welding device 8 in the welding plane 12.

This has the advantage that the entire foliation process

runs uncomplicated and fully automatic. Thus, the operator is relieved, since no human steps for the foiling of goods 2 are required and can be saved according to employee costs.

Furthermore, a simple, reliable and fully continuous operation of the filming device 1 is made possible. Due to the automation, the efficiency of the filming device 1 is also increased. Furthermore, there is the advantage that no fixing elements such as staples or nails are needed to position the film 5 on the estate and / or to fix, creating visually appealing Results of high quality are possible. Since the available space is often very limited in various plants and production rooms, another advantage of the filming apparatus 1 is that the

Folierungsvorrichtung 1 of their dimensions shorter than the material to be foiled 2 may be formed. Due to the space-saving design is the

Folierungsvorrichtung 1 thus also for production areas with limited

Space available. By welding both wrapped with foil 5 side edges 13 of the estate 2 by the welding device 8 in the welding plane 12 on the one hand, the processing time and on the other hand, the space requirement of

Folierungsvorrichtung 1 kept low because the good and / or the

Welding device 8 for one or more welding steps does not have to be rotated or lifted. Since the gripper 7, the film 5 only to her

grip opposite corners and pull from the supply position 9 in the welding position 10 and hold, can be on a complex and

space-demanding mechanism, as used for example in articulated robot arms are used, and there is further automatically a certain tightening of the film 5 instead, causing kinks and wrinkles on the same, in the

Welding position 10 arranged Good 2, are avoided. Another advantage of the simple design of the gripper 7 and the welding device 8 is that these components require little maintenance due to their simplicity.

Due to the welding of the side edges 13 of the Guts 2 is a

Multi-layered film 5 on Good 2 avoided because film projections 16 need not be handled. Since the respective material 2 is foiled with a perfect fit, additional positioning or fixing means can be dispensed with.

By arranging the first end face 14 of the product 2 in the welding plane 12 and by the gripper 7 holding the film in the welding position 10, the film 5 is folded on the side edges 13 of the first end face 15 of the product 2. These particular triangular film protrusions 16 can during the first welding step by means of the welding device. 8

be welded and thus removed, which is exemplified in Fig. 1 c.

It can be provided that the film 5 on the side edges 13 of the second end face 17 of the Guts 2 by the movement of the second end face 17 in the Welding plane 12 and by the movement of the film 5 holding gripper 7 in the welding position 10, is folded and the welding device 8, resulting from the folding of the film 5, in particular triangular,

Film projections 16 abschweißt, whereby a uniform foiling of Guts 2 accomplished, which is exemplified in Fig. 1 e can be seen. Preferably, the welding device 8 welds both film projections 16 at the same time.

It can be provided that the foliation device 1 comprises at least one sensor which determines the dimensions of the product 2, whereby a manual input of the dimensions of the product 2 is omitted. The dimensions of the material to be foiled 2 are important information regarding the length and width of the required film 5, in order to foil the product 2 on five sides, in particular on the upper side 20, on both side surfaces and on both end faces 15, 17.

In order to reduce the space requirement of the filming device 1 further, it can be provided that the film supply device 6 and the grippers 7 are arranged on a common frame. The frame itself can be arranged on an alignment unit, which can be moved normal to the conveying direction 14, whereby the frame can be aligned or centered with respect to the respective position of the item 2 on the conveyor 3.

It can also be provided that the filming device 1 at least one horizontal positioning element 31 and / or at least one vertical

Positioning element 32 includes the welding device 8 according to the dimensions of the Guts 2, in particular the dimensions of the end face 15, 17 of the Guts. 2

to be positioned accordingly in the welding plane 12, which is shown by way of example in FIG. 6. The at least one horizontal positioning element 31 positions the welding device 8 according to the width of the product 2. The at least one vertical positioning element 32 positions the

Welding device 8 corresponding to the height of the Guts 2. The at least one horizontal positioning element 31 and the at least one vertical

Positioning element 32 are shown by way of example in FIG.

Preferably, it can be provided that the welding device 8 at least one, in particular two, spaced apart, welding strips 18th which is shown by way of example in FIG. 9. Thus, the

Welding device 8 both side edges 13 of the first end face 15 of the Guts 2 weld simultaneously, which on the one hand processing time is saved on the other hand by the simple design reliable and uniform

Welding results are possible.

It can be provided that the grippers 7 in the welding position 10 in a substantially normal to the conveying direction 14 welding plane 12th

are arranged. The welding plane 12 can also be essentially defined as that plane which clamps the grippers 7 in the welding position 10 and the end faces 15, 17 of the object 2 when they are arranged in a line.

In particular, it can be provided that the filming device 1 has a single welding device 8, which is arranged to be movable in the welding plane 12. It can also be provided that the filming device 1 comprises two or more than two welding devices 8. The advantage with only one

Welding device 8 is that the filming device 1 requires only a simple control technique for controlling the one welding device 8.

However, it can also be provided that the at least one welding device 8 has at least one, in particular a plurality of, movable parts for welding the film 5 held by the grippers 7 in the welding position 10 on the material 2 to be foiled. Thus, the welding plane 12 can be selectively adjusted with respect to the inclination of the end face 13, 17 of the Guts in an example not cuboid Good 2. Particularly preferably, it can be provided that at least one sealing strip 18 is arranged movably in the welding plane 12 so as to be predeterminable.

It may also preferably be provided that the at least one, in particular at least two, welding strips 18 is provided with a foil clamping in order to reduce the tension in the film during the welding process. The

Clamping is located in particular between the at least one sealing bar 18 and the conveyed Good. 2

Furthermore, it can preferably be provided that the filming device 1 at least one movably mounted hold-down 19, in particular a

Hold-down roller, comprises to press the film 5 on a top 20 of the Guts 2, whereby a smoother and more uniform surface on the top 20 of the Guts 2 is achieved. The depression of the film on the

Surface of Guts 2 also generates a certain tension in the film 5, whereby kinks and edges of the film 5 are kept low on Good 2.

In a further preferred embodiment it can be provided that the filming device comprises air nozzles 34 in order to press the film 5 onto the upper side 20 of the product 2 by means of air pressure. The further preferred embodiment is shown by way of example in FIGS. 11 to 13.

The air nozzles 34 may be formed in particular as alignable air nozzles 34, whereby the respective air flow of the respective air nozzle 34 can be easily adapted to the geometric shape of the product 2 to effectively press the film 5 on the top 20 of the product 2.

It can also preferably be provided that the air flow rate generated by the venting nozzles 34 and / or the outlet velocity of the air can be regulated,

in particular infinitely variable, is.

The air nozzles 34 may preferably in the area, in particular on, the

Welding device 8 may be arranged.

However, it can also be preferred that the foaming device 1 comprises at least one side holder for the lateral pressing of the film 5 to the material 2, whereby a smoother and more uniform surface of the film 5 is achieved on the side surfaces of the product 2.

It can preferably be provided that at least one gripper 7 on a

Movement device 21 is arranged. The movement device 21 may preferably comprise at least one linear guide, which along a

Longitudinal axis 29 extends, extending from the deployment position 9 to the

Welding position 10 extends. Accordingly, it can be provided that the grippers 7 - in the operating position - by means of linear guides on the longitudinal axis 29 obliquely to the conveying direction 14 are arranged movably predetermined and that the gripper. 7 between the ready position 9 and the welding position 10 are guided linearly.

It may further be provided that the movement device 21 has at least one transverse axis 30, which may preferably be formed as a belt axis with linear guides, which is shown by way of example in FIG. 10. Particularly preferably, the movement device 21 has at least one linear guide along the longitudinal axis 29 and a belt axis with linear guides along the transverse axis 30.

Preferably, a linear guide is arranged in each case along a longitudinal axis 29 laterally of the filming channel 4. Particularly preferably, in each case one movement device 21 is arranged laterally of the filming channel 4.

Furthermore, it can be provided that the movement device 21 comprises a drive, preferably a linear motor or a toothed belt drive.

The grippers 7 are in particular adapted to the film 5 in the

To grab supply position 9 and to hold the film 5 in the welding position 10. A gripper 7 may have two or more clamping elements, such as clamps, which it can open and close, or it may be one

Clamping rail or as a terminal block, which can be opened and closed, be formed.

However, it can also preferably be provided that the grippers 7 are pivoted between the provision position 9 and the welding position 10. For this purpose, the grippers 7 may be pivotally mounted.

It can be provided that the film supply device 6 comprises at least one horizontal cutting device 25 for cutting the film 5. By the horizontal cutting of the film 5, the length of the film 5 of the length of the Guts 2 can be adjusted.

Furthermore, it can preferably be provided that the

Film supply device 6 comprises at least one vertical cutting device 22 for cutting the film 5. By the vertical cutting of the film 5 Many different films 5 can be used because they can be adapted to the dimensions of Guts 2 exactly. Thus, a precise cutting of the film 5 is made possible on the dimensions of the Guts 2.

Particularly preferably it can be provided that the filming device 1 comprises a film turret 23, the plurality of film holders 28 and a

pivotable rolling drive 24 includes. Preferably, the film turret 23 has at least four, in particular at least six, preferably six, film receptacles 28 for at least four, in particular at least six, preferably six films 5, which is illustrated by way of example in FIG. 2 and FIG. Films 5, in particular film rolls 27 can thus be stored in the film holders 28 of the film turret 23, whereby space is saved on the one hand and on the other hand

fully automatic change between different films 5 made of different materials, thicknesses or basic dimensions are possible. Thus, you can

For example, foils 5 of different widths are stored in the film turret 23, which can be selectively selected for goods 2 of different dimensions, whereby film waste can be reduced and costs can be saved.

It can preferably be provided that the positioning of the film 5 in

Film turret 23 in a roll-off position 33 and the clamping of the film 5 from the film turret 23 in the film supply device 6 automatically by means of a swing-roll-off drive 24. Furthermore, it can be provided that the filming device 1 comprises a crane for feeding the film revolver 23 with films 5.

Furthermore, it can preferably be provided that the filming device 1 has a film disposal device 26, whereby a fully automatic

Disposal of the welded or cut film projections 16 is made possible. The film disposal device 26 is preferably as

Conveyor belt or formed as a movable receptacle and serves to dispose of the welded and cut in the first and / or second welding step or supernatant film projections 16 automatically, which is exemplified in Fig. 3 and in Fig. 9.

For the purpose of automation it can be provided that the filming device 1 Means for attaching a parcel note to the foiled material 2 includes.

It is particularly preferred that the film 5 is folded by the movement of the Guts 2 in the welding plane 12 at the first end face 15 of the Guts 2. When the material 2, more precisely a first end face 15 of the product 2 is moved into the welding position 10, the film 5 is tensioned, whereby the particular triangular folding of the film 5 with a double Supernatant on the side edges 13 of the first

Front side 15 of the estate 2 is created.

In order to weld the film 5 to the second end face 17 of the product 2, it can be provided that the grippers 7 release the film 5 after the first welding step and the product 2 is moved further in the conveying direction 14 until a second end face 17 of the product 2 in FIG the welding plane 12 is arranged, wherein the grippers 7, the film 5 in particular to the film supply device 6 at

gripping opposite edges and the, the film 5 holding gripper 7 are moved to the welding position 10, wherein the film 5 is folded at the side edges of the second end face 17 of the Guts 2 by the arranged in welding position 10 gripper 7 and film projections 16 arise, wherein the film 5 in a second welding step by means of the welding device 8 at both

Side edges 13 of the second end face 17 of the product 2 is welded in the welding plane 12, which is shown by way of example in FIGS. 1 d and 1 e. The

Film projections 16 are usually triangular and double-layered and they are preferably simultaneously welded by the welding device 8, in particular by two sealing strips 18, whereby time can be saved.

In order to achieve a visually appealing film, it is further preferred that in the first and / or in the second welding step the film projections 16 are separated from the film 5. Particularly preferably, it can be provided that the gripping arms 7 accumulate in the first and / or second welding step

Film projections 16 of the film disposal device 26 passed.

In order to tension the film 5 on Good 2 and to avoid wrinkles is preferably provided that the drawn by the grippers 7 from the supply position 9 in the welding position 10 slide 5 with the conveyor 3 a Angle of at least 20 °, in particular of at least 30 °, preferably of at least 45 °, and at most of 70 °, in particular of at most 60 ° and particularly preferably of not more than 50 °.

It can also be provided that the longitudinal axis 29 preferably at an angle of at least 20 ° and at most 90 °, more preferably between 30 ° and 60 °, between the conveyor 3 and the film supply device 6, or between the welding position 10 and the ready position 9 a I read.

In order to achieve a precise dimensioning of the film and correspondingly uniformly shaped right-angled triangles of the film projections 16, which of the

Welding device 8 can be welded according to exactly, it is provided that the distance between the grippers 7 in the welding position 10 to each other corresponds to the width of the film 5, in particular the sum of the lengths of the upper edge and both side edges of the Guts 2.

Claims

PATENT APPLICATIONS

A filming apparatus (1) for automatically laminating goods (2) comprising a conveyor (3) for conveying a product (2) through a filming duct (4) of the filming apparatus (1), the filming apparatus (1) providing film (5) for wrapping the product (2) a - in

Operating position considered - above the Folierungskanals (4) arranged film supply device (6), wherein the filming device (1) further comprises at least two movably arranged gripper (7) and a

Welding device (8), characterized in that the at least two grippers (7) between a supply position (9) and a

Welding position (10) are arranged movably predetermined, wherein the grippers (7) are adapted to grab the foil provided by the film providing device (6) (5) in the ready position (9) at two opposite corners and from the provision position (9) the welding position (10) to pull and hold, wherein the grippers (7) in the welding position (10) in a welding plane (12) and substantially at the level of an upper surface (11) of the conveyor (3) are arranged, and that the welding device (8) is designed to weld both side edges (13) of the item (2) which are arranged in the welding plane (12) and are covered with film (5).

2. Folierungsvorrichtung (1) according to claim 1, characterized in that the welding device (8) has at least one, in particular two, spaced from each other, welding strips (18).

3. Folierungsvorrichtung (1) according to claim 2, characterized in that at least a part of one of the welding bars (18) in the welding plane (12) is arranged movably predetermined.

4. Folierungsvorrichtung (1) according to any one of claims 1 to 3, characterized in that the filming device (1) comprises air nozzles (34) for pressing the film (5) on an upper side (20) of the Guts (2).

5. Folierungsvorrichtung (1) according to one of claims 1 to 4, characterized in that at least one gripper (7) on a moving means (21) is arranged, wherein the moving means (21) at least one

Includes linear guide.

6. Folierungsvorrichtung (1) according to one of claims 1 to 5, characterized in that the grippers (7) - in the operating position - horizontal to

Conveying direction (14) are arranged movably predetermined.

7. Folierungsvorrichtung (1) according to one of claims 1 to 6, characterized in that the film supply device (6) comprises at least one vertical cutting device (22) for cutting the film (5).

8. Folierungsvorrichtung (1) according to any one of claims 1 to 7, characterized in that the filming device (1) comprises a film turret (23) which comprises a plurality of foil receptacles (28) and a pivotable rolling drive (24).

9. Folierungsvorrichtung (1) according to one of claims 1 to 8, characterized in that the filming device (1) a

Foil disposal device (26).

10. A method for operating a Folierungsvorrichtung (1), in particular according to one of claims 1 to 9, wherein to be foiled Good (2) by means of a conveyor (3) through a Folierungskanal (4) of the filming device (1) is transported, wherein 5) for foiling the material (2) from a film supply device (6) arranged above the filming channel (4)

wherein at least two movably arranged grippers (7) in a provision position (9) grip the film (5) provided by the film supply device (6) at two opposite corners,

wherein the grippers (7) holding the film (5) are moved from the supply position (9) to a welding position (10), the grippers (7) being moved in the position

Welding position (10) in a welding plane (12) and substantially at the level of a top (11) of the conveyor (3) are arranged, wherein the material to be foiled (2) by means of the conveyor (3) is moved until a first The end face (15) of the item (2) is arranged in the welding plane (12), the film (5) being arranged on side edges (13) of the first end side (15) by the gripper (7) arranged in the welding position (10) ) of the Guts (2) is folded and film projections (16) arise, wherein the film (5) in a first

Welding step by means of a welding device (8) on both side edges (13) of the Guts (2) in the welding plane (12) is welded.

11. The method according to claim 10, characterized in that the film (5) by the movement of the Guts (2) in the welding plane (12) on the first

Front side (15) of the material (2) is folded.

12. The method according to claim 10 or 11, characterized in that the gripper (7) let go of the film (5) after the first welding step and the good (2) in the conveying direction (14) is moved to a second end face (17) of the Guts (2) in the welding plane (12) is arranged, wherein the grippers (7) grip the film (5) at opposite edges and the film holding gripper (7) are moved to the welding position (10), wherein by the , in the welding position (10) arranged gripper (7), the film (5) on the side edges (13) of the second end face (17) of the Guts (2) is folded and film projections (16) arise, wherein the film (5) in a second welding step by means of

Welding device (8) at both side edges (13) of the second end face (17) of the Guts (2) in the welding plane (12) is welded.

13. The method according to any one of claims 10 to 12, characterized

in that in the first and / or in the second welding step the

Film projections (16) are separated from the film (5).

14. The method according to any one of claims 10 to 13, characterized

in that the film (5) drawn by the grippers (7) from the supply position (9) into the welding position (10) forms an angle of at least 20 °, in particular a minimum of 30 °, preferably a minimum of 45, with the conveyor (3) °, and a maximum of 70 °, in particular of not more than 60 ° and particularly preferably of not more than 50 °.

15. The method according to any one of claims 10 to 14, characterized characterized in that the distance of the grippers (7) in the welding position (10) to each other corresponds to the width of the film (5), in particular the sum of the lengths of the upper edge and both side edges of the Guts (2).