Application station and application method

Abstract

An application station (1) for applying a venting device (50) to a predetermined position of a bag material (101), comprising a feed (2) and a discharge (3) for bag material, wherein a welding device (4) comprising a welding unit (5) and a counterpart (6) is arranged between the feed (2) and the discharge (3), wherein the bag material (101) can be transported between the welding unit (5) and the counterpart (6). This allows a venting device (50) to be fed to the welding device (4). The bag-making apparatus (200) comprises a store (201) with a bag material (101) and also comprises a moulding device (202) with a welding station (203), wherein such an application station (1) is located between the store (2) with bag material (101) and the moulding device. In the method for applying a venting device (50) to a predetermined position of a bag material (101) with such an application station (1) and / or with such a bag-making apparatus (200), a venting device is fed to the welding device (4) and is applied to the bag material by means of the welding device (4).

Description

[0001] Application station and method for application

[0002] Description

[0003] The present invention relates to an application station for applying at least one venting device to at least one predetermined position of a sack material, wherein the application station comprises at least one feed for sack material and at least one discharge for sack material. The present invention also relates to a sack manufacturing device comprising at least one supply with at least one sack material and at least one forming device with at least one welding station, wherein the welding station is provided at least for producing at least one tube from the sack material. At least one application station is provided between the supply with sack material and the forming device. Furthermore, the present invention relates to a method for applying at least one venting device to film material using such an application station or using such a sack manufacturing device.

[0004] When filling loose and / or free-flowing products into bags, venting the filled and sealed bags is often necessary and / or desired. This is particularly useful if, for example, air was added to the product stream during filling to improve flowability.

[0005] DE 10 2021 117 166 A1, for example, discloses a venting device in the form of a so-called patch, which enables the venting of a bag filled with bulk material. The patch is designed in such a way that air can escape from the bag, while moisture, or in particular liquids such as water or rain, cannot penetrate into the bag when such bags are stored, e.g., on pallets.

[0006] The device described in DE 10 2021 117 166 A1

[0007] A venting device can usually reliably ensure this. The patch is connected or welded to the bag material, with the bag material itself providing the topmost or outermost layer or position of the patch. However, it is not easy to integrate such venting devices or patches into a bag or into the bag material. The patches should generally be provided at specific locations depending on the later storage orientation of the bag. Installing or incorporating them into a finished bag is difficult.

[0008] It is therefore the object of the present invention to create the possibility of equipping bags more easily with a venting device.

[0009] This object is achieved by an application station having the features of claim 1, by a bag manufacturing device having the features of claim 21, and by a method for applying a venting device having the features of claim 25. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the present invention emerge from the general description and the description of the exemplary embodiment.

[0010] The application station according to the invention for applying at least one venting device to at least one predetermined position of a bag material comprises at least one feed for bag material and at least one discharge for bag material. Furthermore, at least one welding device is included, wherein the welding device is arranged between the feed and the discharge for bag material and wherein the welding device comprises at least one welding unit and at least one counterpart, wherein the bag material can be conveyed between the welding unit and the counterpart. Furthermore, at least one venting device can be fed to the welding device.

[0011] A venting device can be provided, in particular, by a so-called patch, as described, for example, in DE 10 2021 117 166 A1, the contents of which are hereby incorporated by reference. Such venting devices or such a patch can ensure that air can escape from a filled bag, but preferably no moisture or water can penetrate into the bag through the venting device.

[0012] The welding unit of the welding device comprises at least one welding element, for example a welding band and / or a welding jaw. The counterpart is preferably designed as a so-called anvil or as a support surface and / or, depending on the design, can also be provided by a second welding unit.

[0013] For this purpose, the film material can be conveyed in particular between the welding unit and the counterpart, so that the venting device can be applied to the bag material at a predetermined location, so that the venting device is then arranged at a predetermined location in the finished bag.

[0014] The application station according to the invention offers many advantages. A significant advantage is that, during bag production, at least one venting device can be applied to a predetermined position on the bag material or to a predetermined subsequent position on the empty bag. In this way, bags or even just bag material with venting devices can be provided reliably and easily.

[0015] Preferably, the welding unit and / or the counterpart comprise at least one frame-like support unit. A frame-like support unit makes it possible, in particular, for the film material to remain accessible through the frame-like structures.

[0016] Particularly preferably, at least one gripping device is assigned to the welding unit and / or the counterpart, at least for the venting device. Depending on the design, a venting device can be gripped and fed to the bag material by means of a gripping device, if required. A gripping device can, in particular, comprise, for example, vacuum suction cups or vacuum grippers. The fact that this gripping device is assigned to the welding unit and / or the counterpart means, in particular, that it is encompassed by it and is preferably accommodated at least partially in the carrier unit.

[0017] In expedient embodiments, at least one processing device is assigned to the welding unit and / or the counterpart. "Assigned" means, in particular, that the processing device is encompassed by the welding unit and / or the counterpart and is preferably accommodated at least partially in the carrier unit. Such a processing device can be provided, in particular, for processing the film material and / or the venting device.

[0018] In expedient developments, the processing device comprises at least one punching device. By means of the punching device, at least the film material and / or the venting device can preferably be processed and in particular punched at least in sections. The punching device preferably comprises at least one knife in order to introduce at least one slit into the bag material in the region of the venting device to be applied. Depending on the design, the venting device can preferably also be processed or slit using the knife(s). In this case, the bag material can in particular be slit in such a way that later, when the bag is oriented or stored as intended, it is vented, but no water can penetrate.

[0019] In expedient embodiments, the blade can be displaced via at least one piston. The blade of the processing device or punching device can be easily moved or displaced via a piston or similar device.

[0020] Particularly preferably, the knife is movable via at least one coupling mechanism. Such a design with a coupling mechanism can, in particular, ensure a continuous up and down movement of the knife.

[0021] Preferably, the coupling mechanism is designed such that the knife is in a rest position in both end positions of the piston and in at least one intermediate position between the two end positions in at least one punching position. In particular, in the cutting position, the knife protrudes at least partially or at least a small distance from the sealing unit in the direction of the bag material, thus enabling processing of the film material with the knife and, in particular, a punching process.

[0022] Preferably, at least one support device for the bag material is provided between the welding unit and / or the counterpart. In particular, at least one frame-like support device is provided which supports the bag material in particular during punching or processing. In expedient embodiments, at least one receiving device for at least one venting device is assigned to the welding unit and / or the counterpart. In particular, at least one venting device or patch can fall into such a receiving device and / or be inserted there manually, depending on the embodiment. From this receiving device, the patch or the venting device can then be fed to the film material and connected to it.

[0023] Preferably, the welding unit and / or the counterpart are attached via at least one quick-change device.

[0024] Particularly preferably, the quick-change device comprises at least one angle compensation device. Such an angle compensation device can preferably achieve an optimal alignment of the welding unit and / or counterpart relative to the film material, so that a venting device can preferably be optimally mounted.

[0025] Preferably, a supply of venting devices is provided. In particular, an endless supply of venting devices is provided, which can be characterized by a plurality of interconnected venting devices. In particular, a drive can be provided that feeds the venting device to the application station or welding station.

[0026] Preferably, at least one cutting device is provided for separating the venting devices. Then, if necessary, a venting device can be cut from the endless supply or roll of a plurality of venting devices and preferably fed to the receiving device. In expedient embodiments, at least one guide device is provided. This guide is particularly intended to feed the venting device from the cutting position or the supply of venting devices to the welding device or the receiving device.

[0027] In particular, at least one clamping device is associated with the cutting device. With such a clamping device, the cut-off patch or the cut-off venting device can preferably be clamped or held until the receiving device associated with the welding device is free for the next venting device.

[0028] Preferably, at least one bag material storage device is provided before and / or after the welding device. Such a material storage device can, in particular, comprise a deflection roller system or at least one deflection roller, whereby the movement of the bag material during the application of the patch or the venting device can be minimized and / or even stopped, if this should be necessary in the corresponding design.

[0029] In particular, if the welding device is intended to be stationary, it may be expedient to stop the conveying of bag material through the welding device when the venting device is to be applied to the bag material or welded to it.

[0030] Preferably, at least one sensor device and / or at least one control device is provided. The sensor device and / or control device can be part of the application station or also designed as a separate assembly or also as part of another device. The welding device and / or the application station is preferably designed to be displaceable, at least in sections. Because the welding device and / or the entire application station is designed to be displaceable, it can, for example, be conveyed parallel to the bag material when the venting device is being welded, so that it is not necessary to stop the film transport. In this case, it is particularly preferred that there is a synchronized displacement or movement of the bag material and the welding device.

[0031] The bag manufacturing device according to the invention comprises at least one supply of at least one bag material and at least one forming device with at least one welding station, wherein the welding station is provided for producing at least one tube from the bag material. At least one application station, as previously described, is arranged between the supply of bag material and the forming device.

[0032] The bag manufacturing device according to the invention also offers many advantages. A significant advantage is that a venting device can be inserted into the bag material at a predetermined location directly during the manufacturing process of the film tube or the bag from film material.

[0033] Instead of conventional welding materials, the welding station can be used alternatively or additionally to implement a hot air welding process, which in particular enables an off-center weld seam and also allows the realization of a smaller unit.

[0034] Preferably, at least one storage device is associated with the forming device. This storage device can, for example, receive or store the formed and welded film tube or even already finished bags. These bags can then, in particular, be rolled up. In expedient embodiments, at least one device for producing venting devices is associated with it. Such a device for producing venting devices can, in particular, provide a supply of venting devices, in particular an endless supply or a roll of interconnected venting devices.

[0035] Such a device for producing ventilation devices preferably comprises at least one welding station, which comprises at least one welding means and at least one anvil roller. In particular, a polygonal and preferably octagonal or hexagonal anvil roller is provided. Depending on the design, another welding method can also be used alternatively. By means of the polygonal anvil roller, in particular, a stitched seam or a dotted tack can be achieved.

[0036] Preferably, the application station and / or the welding device are designed to be movable. It is particularly preferred that a synchronized movement between the film material and the application station and / or the welding device can take place, so that no stop of the film transport is necessary when welding on the venting device.

[0037] The method according to the invention is suitable for applying a venting device to a predetermined position of a bag material using an application station as described above or using a bag manufacturing device as described above. At least one venting device is fed to the welding device and applied to the bag material at least in sections by means of the welding device. The venting device is preferably applied to the film material on what will later be the inside of the finished bag.

[0038] In particular, the bag device is applied circumferentially to the bag material. The venting device is applied to the film material, or is attached to it, or welded to it, in particular by means of the welding unit of the welding device.

[0039] The method according to the invention also offers the advantages which have already been described for the application station and the bag manufacturing device.

[0040] Preferably, before applying the venting device, the bag material is slit at least in sections at the location predetermined for the application of the venting device by means of the punching device. This makes it possible to ensure that the outer shell or the outer layer of the venting opening has venting slits.

[0041] Particularly preferably, the venting device is held in a defined manner by the gripping device prior to application or welding. This preferably ensures that the venting device can be attached to or welded to a predetermined location and also in a defined manner.

[0042] Preferably, the bag material is conveyed essentially continuously, with the bag material being stopped during application of the venting device at least in the region of the application station by means of at least one bag material storage device. This ensures that a reliable connection can be provided between the venting devices and the bag material, whereby the bag material and the venting device must preferably not move against or relative to each other during welding.

[0043] Alternatively or additionally, in expedient developments the bag material can be conveyed essentially continuously, wherein the application station and / or the welding device is displaced parallel to the bag material at least during application of the venting device to the bag material. For this purpose the application station and / or the welding device is provided so as to be displaceable at least in sections so that a synchronized movement between the bag material and the application station or welding device can be enabled. Such a configuration can in particular avoid the bag material having to be stopped during welding or application of the venting device to the film material. Depending on the configuration, this can achieve higher performance.

[0044] Further advantages and features of the present invention will become apparent from the exemplary embodiment which is explained below with reference to the accompanying figures.

[0045] The figures show:

[0046] Fig. 1 is a purely schematic representation of an embodiment of a bag manufacturing device according to the invention with an embodiment of an application station according to the invention in a perspective view;

[0047] Fig. 2 shows the embodiment according to Figure 1 in a purely schematic side view;

[0048] Fig. 3 is a purely schematic representation of a bag with venting devices in a perspective view; Fig. 4 is a purely schematic representation of a venting device in an exploded view;

[0049] Fig. 5 is a purely schematic representation of a venting device in an exploded view integrated into a bag in a sectional view from the side;

[0050] Fig. 6 is a purely schematic representation of an embodiment of an application station according to the invention in a perspective view;

[0051] Fig. 7 a purely schematic detailed representation without foil material;

[0052] Fig. 8 is a purely schematic representation of an embodiment of a welding device of an application station according to the invention in a perspective view;

[0053] Fig. 9 is a purely schematic representation of a welding device of an embodiment of an application station according to the invention in a partially sectioned perspective view;

[0054] Fig. 10 is a purely schematic representation of the counterpart of a welding device of an embodiment of an application station according to the invention in a perspective view;

[0055] Fig. 11 is a purely schematic representation of the welding unit of a welding device of an embodiment of an application station according to the invention in a perspective view; Fig. 12 is a purely schematic representation of a welding device of an embodiment of an application station according to the invention in a side view;

[0056] Fig. 13 is a purely schematic representation of a welding device of an embodiment of an application station according to the invention in a sectional view from the side;

[0057] Fig. 14 is a purely schematic representation of the welding unit of a welding device of an embodiment of an application station according to the invention in a sectional view from the side;

[0058] Fig. 15 several positions of the processing device of the welding unit according to Figure 14;

[0059] Fig. 16 is a purely schematic representation of an apparatus for producing ventilation devices in a perspective view;

[0060] Fig. 17 is a purely schematic diagram of an apparatus for producing ventilation devices;

[0061] Fig. 18 is a purely schematic representation of the production of a spacer device for a venting device with a device for producing venting devices in a perspective view; and

[0062] Fig. 19 is a purely schematic representation of a welding station of a device for producing venting devices in a perspective view. Figure 1 shows a purely schematic perspective view of a bag-making device 200 according to the invention.

[0063] In the embodiment shown here, the bag manufacturing device 200 comprises a supply 201 with bag material 101, wherein the bag material 101 is stored here as a film 104 or film layer on a roll.

[0064] For forming bags 100 or a tube 102 from bag material 101, a forming device 202 is provided in the embodiment shown, in which the single-layer film 104 or the single-layer bag material 101 is formed into a tube-like shape by means of corresponding forming devices and connected to a film tube 102 by means of a welding station 203.

[0065] The hose 102 produced in this way from bag material 101 is then subsequently stored in a storage device 204, wherein here again a storage form rolled up as a roll is preferred.

[0066] In order to provide a venting device 50 at a predetermined location in a later bag 100 or in the tubular film 102 provided for this purpose, an application station 1 according to the invention is arranged between the supply 201 of bag material 101 and the forming device 202 in the embodiment shown here.

[0067] This application station 1 serves to apply venting devices 50 to the bag material 101 at predetermined locations, so that at least one venting device 50 is already installed at a defined and predetermined location in the subsequent film tube 102 or in the subsequent bag 100. Figure 2 shows an exemplary embodiment of a bag manufacturing device 200 according to the invention in a side view. Here, too, one can see the supply 201 for bag material 101 and the application station 1 according to the invention for applying venting devices 50 to a predetermined location on the bag material 101.

[0068] After at least one venting device has been applied to or connected to a predetermined location on the bag material 101, the film 104, which is then still a single-layer, or the bag material 1 is fed to the forming device 202. In the exemplary embodiment shown here, the bag material 101 with the installed venting device 50 is guided essentially in a tube-like manner around a forming box 206 via a corresponding forming shoulder 205 and connected by means of a welding station 203 to form a firmly connected tube 102 made of bag material 101 with the inserted venting device 50.

[0069] The tubular film 102 thus produced with venting devices 50 is then subsequently rolled up or stored in the storage device 203. Depending on the design, additional seams may also be incorporated into the tube 102, for example, a bottom seam of a subsequent bag body.

[0070] Figure 3 shows a purely schematic perspective view of a bag 100 filled with bulk material, which, in the exemplary embodiment shown here, comprises a venting device 50 at several points. The bag 100, or rather the film tube 102 used to produce this bag 100 with the venting devices 50 already installed, was produced using a bag-making device 200 according to the invention.

[0071] In the embodiment shown, the venting devices 50 are mounted in such a way that air can escape from the interior of the bag 100, but in the predetermined storage position or orientation of the bag 100, liquids such as standing moisture from rain or the like cannot penetrate into the bag 100.

[0072] Figure 4 shows a purely schematic illustration of a venting device 50 as an example, such as can be applied to a predetermined location on bag material 101 using the bag manufacturing device 200 according to the invention or the application station 1 according to the invention.

[0073] In this case, a three-layer design of a venting device 50 or a so-called patch 51 is provided, wherein the outermost layer of the venting device 50 is provided here by the bag material 101 itself, to which the rest of the venting device 50 is applied.

[0074] The additional components include a dust protection layer 52, which is in direct contact with the product contained in the bag 100. A spacer device 53 is arranged below this, which is intended to create a distance between the dust protection layer 52 and the outer layer 55 or bag material 101, at least at certain points.

[0075] Figure 5 shows a purely schematic illustration of the operation of such a venting device 50 or a patch 51. The spacer device 53 has spacer elements 56 oriented in different directions, which ensure a free flow cross-section between the dust protection layer 52 and the spacer device 53 and between the spacer device 53 and the outer layer 55 or bag material 100.

[0076] Furthermore, holes or openings 54 are provided in the spacer device 53 in an upper region, so that air can escape from the bag 100 via these openings 54 and the slots 103 in the bag material 100 or the outer layer 55. Figure 6 shows a schematic perspective view of an application station 1 according to the invention, as it can also be used in a bag manufacturing device 200 according to the invention.

[0077] In the embodiment shown here, the application station 1 comprises a feed 2 for bag material 101 and, on the other side of the application station 1, a discharge 3 for the bag material 101, which is then fed to the forming device 202 in a bag manufacturing device 200 according to the invention.

[0078] Depending on the design, the bag material 101 provided with venting devices 50 can also be rolled up again, for example, and temporarily stored or stored.

[0079] The feed 2 for bag material 1 is followed by a welding device 4, wherein, in the embodiment shown here, venting devices 50 are fed from a supply 23 to the welding device 4 in order to apply them to the bag material 101 at a predetermined location. In this case, a venting device 50 is applied here to the later inner side 105 of the bag 100.

[0080] Figure 6 further shows that bag material stores 27 are provided both in the feed area 2 and in the discharge area 3, which in the exemplary embodiment shown are provided by a plurality of deflection rollers 30 which are arranged so as to be movable relative to one another. In the exemplary embodiment shown, the movement of the bag material 101 in the area of ​​the application station 1 can thus be stopped via this bag material store 27 during the fastening or welding of a venting device 50 onto the predetermined point on the bag material 101 in order to ensure a secure connection and exact positioning. In this way, continuous conveying of the bag material 1 can be maintained in the remaining area of ​​the bag manufacturing device 200.

[0081] Depending on the design, such a bag material storage 27 can be dispensed with and / or the application station 1 and in particular the welding device 4 of the application station 1, which will be described in more detail later, can be provided so as to be displaceable or movable. In this case, the application station 1 and / or the welding device 4 can be provided in particular so as to be synchronized with or to the movement of the bag material 101, so that despite the continuous movement of the bag material 101, secure and precise positioning of the venting device 50 on the predetermined point on the bag material 101 can be guaranteed and during the fastening or welding of the venting device 50 to the bag material 101 no relative movement occurs between the venting device 50, the welding station 4 and / or the bag material 101.

[0082] Figure 7 shows a detailed view of the application station 1 according to Figure 6 without bag material 101 being conveyed through it.

[0083] Figure 8 shows a purely schematic perspective view of an embodiment of a welding device 4 of an application station 1 according to the invention. In the embodiment shown, the welding device 4 comprises a welding unit 5 and a counterpart 6. In the embodiment shown, the orientation of the welding device 4 in the installed state is transverse to the orientation shown here, as in Figure 6, for example.

[0084] In the exemplary embodiment shown here, both the welding unit 5 and the counterpart 6 comprise support units 7, in which further components can be arranged as shown below. In Figure 9, the exemplary embodiment according to Figure 8 is shown again in a partially sectioned view. In the illustration shown here, it can be seen that the welding unit 5 and the counterpart 6 are attached to the welding device 4 or the application station 1 via a quick-change device 21. This enables rapid assembly and rapid changing of the welding unit 5 and the counterpart 6 to be achieved.

[0085] In addition, it is shown that the quick-change device 21 in the embodiment shown here comprises an angle compensation 22, so that the welding unit 5 and the counterpart 6 in the embodiment shown here can be optimally aligned with one another very easily, so that the welding unit 5 is optimally supported by the counterpart 6 when welding a venting device 50 onto the bag material 101.

[0086] Figure 10 is a purely schematic perspective view of a counterpart 6 of a welding device 4 of an application station according to the invention. It can be seen here that a gripping device 8, which comprises a plurality of vacuum suction cups 33, is arranged in the frame-like support device 7 of the counterpart 6. Depending on the design, a venting device 50 can be positioned on the bag material 101 by means of such a gripping device 8 before welding by means of the welding unit 5.

[0087] Figure 11 shows a purely schematic perspective view of the welding unit 5 of a welding device 4 of an application station 1 according to the invention. Here, too, the quick-change device 21 with the angle compensation 22 can be seen.

[0088] As with the counterpart 6, the support unit 7 is provided in a frame-like manner, with a processing device 9 being arranged in the support unit 7 of the welding unit. In the embodiment shown here, the processing device 9 is provided as a punching device 10, which comprises a plurality of knives 11.

[0089] In order to weld the venting device 50 to the bag material 101, a frame-like welding band 34 is provided in the embodiment shown, which welds the venting device 50 or, in this case, the patch 51 all the way around to the bag material 101.

[0090] As will be explained in more detail in the following figures, the processing device 9 or the punching device 10 is provided for making slits 103 in the bag material 101 before the venting device 50 is attached.

[0091] The welding unit 5 is closed off in the direction of the counterpart 6 by a covering device 32, which securely covers both the welding band 34 and the processing device 9. Heat transfer from the welding band 34 can take place via the covering device 32. To allow the blades 11 of the punching device 10 to come into contact with the bag material 101, a plurality of recesses 31 are provided in the covering device 32.

[0092] Figure 12 shows a purely schematic side view of the welding device 4 of an application station 1 according to the invention. Here, the welding unit and the counterpart 6 of the welding device 4 are arranged in a designated working position or orientation, in which the bag material 101 is conveyed from bottom to top through the welding device 4.

[0093] This view also shows the supply 23 for the venting devices 50 and the bag material 101 passing through the application station 1 or the welding device 4. The bag material 101 passes through the application station 1 or the welding device 4 between the welding unit 5 and the counterpart 6.

[0094] In order to ensure optimal and secure connection of the venting device 50 to the correct point on the bag material 101, a sensor device 28 and a control device 29 are shown purely schematically which, in the exemplary embodiment shown, control the bag material storage devices 27 in the feed and / or removal area during the welding of a venting device 50 onto the bag material 101 in such a way that the bag material 101 does not move or is not conveyed further in the area of ​​the welding device 4 during welding. Depending on the design, the control device 29 or the sensor device 28 can also be provided for moving a movable welding device 4 or, depending on the design, a movable application station 1 parallel to the bag material 101 or the bag material 101 at least during the welding process. synchronized with the movement of the bag material 101 to shift or move.

[0095] As shown in Figure 12 and also in the previous figures, venting devices 50 are rolled up and stored in a supply 23 for venting devices 50. In the exemplary embodiment shown, this endless strip of venting devices 50 is fed to a cutting device 24, which cuts off a venting device 50 at a time by means of a knife. A cut-off or separated venting device 50 then falls, as needed, into a receiving device 20, in which the venting device 50 is already positioned in the correct position between the welding unit 5 and the counterpart 6.

[0096] In order to ensure that a venting device 50 only falls down at a suitable time and in particular only when the receiving device 20 is free, a clamping device 26 is provided in the embodiment shown, which can still hold a cut-off venting device 50 in the area of ​​the cutting device 24 if the receiving device 20 is not yet free again.

[0097] In order for a cut-off venting device 50 to fall properly into the receiving device 20 after release, a guide device 25 is provided in the embodiment shown here, which is provided here by a guide plate.

[0098] Before the welding unit 5 and the counterpart 6 are moved towards each other in order to connect the venting device 50 in the embodiment shown to the inside 105 of the later bag 100, in the embodiment shown a plurality of slits 103 are made in the bag material 101 by means of the punching device 10 arranged in the carrier device 7 of the welding unit 5 or with its knives 11.

[0099] To ensure reliable cutting of the bag material 101, a support device 19 is provided, which holds or supports the bag material 101 during cutting by means of the knives 11 of the punching device 10. After cutting the bag material 101, the knives 11 are retracted again so that no damage can occur to the venting device 50 when welding the venting device 50 from the receiving device 20 onto the bag material 101.

[0100] Depending on the design, the venting device 50 can be held during the welding process or even beforehand by means of the gripping device 8 arranged in the carrier unit 7 of the counterpart 6 and guided onto the bag material 101. Depending on the design of the receiving device 24, however, this is not necessary, since the venting device is then already present at the appropriate location. Figure 13 shows the application station 1 or the welding device 4 according to Figure 12 in a sectional view, so that some of the components can be seen in greater detail.

[0101] Figure 14 shows a purely schematic side view of a welding unit 5 with the processing device 9 or punching device 10 arranged therein. It can be seen that the blades 11 can be moved out of the carrier unit 7 in the direction of the bag material 101 via a piston 12. In the illustrated embodiment, a coupling joint mechanism 13 is provided between the piston 12 and the blades 11, allowing a circumferential movement of the blades 11.

[0102] The movement sequence of the knives 7 within the carrier unit 7 or within the weld seam 5 and in the direction of the bag material 101 conveyed past is shown in detail in Figure 15.

[0103] Figure 15 shows that the blades 11 of the punching device 10 are in a rest position 16 in both end positions 14, 15 of the piston 12, in which the blades 11 do not protrude from the support unit 7 in the direction of the bag material 101. This is achieved by the coupling joint mechanism 13, the design of which also results in the blades 11 being in a punching position 18 in an intermediate position 17 of the piston 12, in which the blades 11 protrude from the support unit 7 of the welding unit 5 and can thus create slits 103 in the bag material 101.

[0104] Depending on the design, other welding methods can also be used appropriately. In particular, hot-air welding can be used, for example, which, on the one hand, enables a smaller technical design and, on the other hand, also makes off-center welding possible, for example. Figures 16 and 17 show a purely schematic illustration of a device 300 for producing ventilation devices 50. It can be seen here that the dust protection layer 52 and the spacer device 53 are each assembled from a supply in the device for producing ventilation devices and wound onto a roll as a supply 23 of ventilation devices 50.

[0105] Figure 18 shows that the spacer elements 56 are introduced into the starting material for the spacer device 53 via corresponding embossing rollers 301.

[0106] The dust protection layer 52 and the embossed spacer device 53 are then subsequently brought together in a welding station 302.

[0107] Figure 19 shows, purely schematically, the welding station 302 of such a device 300 for producing ventilation devices 50, which may comprise a welding means 303 and, in the embodiment shown here, a polygonal or octagonal anvil roller 304. Such a configuration can, for example, achieve a point-like connection or attachment between the spacer device 53 and the dust protection layer 52. Depending on the configuration, the anvil roller 304 may also be hexagonal, for example.

[0108] List of reference symbols

[0109] 1 On brings tat ion 30 pulley

[0110] 2 Feed 31 Recess

[0111] 3 Discharge 32 Cover device

[0112] 4 Welding device 33 Vacuum suction cups

[0113] 5 Welding unit 34 Welding band

[0114] 6 Counterpart 50 venting device

[0115] 7 Carrier Unit 51 Patch

[0116] 8 gripping device 52 dust protection layer

[0117] 9 Processing device 53 Distance device

[0118] 10 Punching device 54 opening

[0119] 11 knives 55 outer layer

[0120] 12 pistons 56 spacer element

[0121] 13 Coupling joint mechanism 100 bag

[0122] 14 End position 101 bag material

[0123] 15 End position 102 Hose

[0124] 16 Rest position 103 Slot

[0125] 17 Intermediate layer 104 foil

[0126] 18 Punching position 105 inside

[0127] 19 Support device 200 Sackher adjusting device

[0128] 20 Reception facility 201 Stock

[0129] 21 Quick-change 202 Forming device 203 Welding station

[0130] 22 Winke laus gl eich 204 storage device

[0131] 23 Supply venting 205 Form shoulder devices 206 Molding box

[0132] 24 Cutting device 300 Device for

[0133] 25 Guide device manufacturing of 50

[0134] 26 clamping device 301 embossing roller

[0135] 27 Bag material storage 302 Welding station

[0136] 28 Sensor device 303 Welding agent

[0137] 29 Control device 304 Ambos swal ze

Claims

Claims:

1. Application station (1) for applying at least one venting device (50) to at least one predetermined position of a bag material (101), comprising at least one feed (2) for bag material (101) and at least one discharge (3) for bag material, characterized in that at least one welding device (4) is included, wherein the welding device (4) is arranged between the feed (2) and the discharge (3), and wherein the welding device (4) comprises at least one welding unit (5) and at least one counterpart (6), wherein the bag material (101) can be conveyed through between the welding unit (5) and the counterpart (6) and wherein at least one venting device (50) can be fed to the welding device (4).

2. Application station (1) according to claim 1, wherein the welding unit (5) and / or the counterpart (6) comprise at least one frame-like support unit (7).

3. Application station (1) according to one of the preceding claims, wherein the welding unit (5) and / or the counterpart (6) is assigned at least one gripping device (8) at least for the venting device (50).

4. Application station (1) according to one of the preceding claims, wherein at least one processing device (9) is assigned to the welding unit (5) and / or the counterpart (6).

5. Application station (1) according to the preceding claim, wherein the processing device (9) comprises at least one punching device (10).

6. Application station (1) according to the preceding claim, wherein the punching device (10) comprises at least one knife (11) for cutting at least one slot (103) into the Sack material (101) is to be introduced in the area of ​​the ventilation device (50) to be applied.

7. Application station (1) according to the preceding claim, wherein the knife (11) is displaceable via at least one piston (12).

8. Application station (1) according to one of the two preceding claims, wherein the knife (11) is movable via at least one coupling joint mechanism (13).

9. Application station (1) according to the preceding claim, wherein the coupling joint mechanism (13) is designed such that the knife (11) is in a rest position (16) in both end positions (14, 15) of the piston (12) and in a punching position (18) in at least one intermediate position (17) between the two end positions.

10. Application station (1) according to one of the preceding claims, wherein at least one support device (19) for the bag material is provided between the welding unit (5) and / or the counterpart (6).

11. Application station (1) according to one of the preceding claims, wherein the welding unit (5) and / or the counterpart (6) is assigned at least one receiving device (20) for at least one venting device (20).

12. Application station (1) according to one of the preceding claims, wherein the welding unit (5) and / or the counterpart (6) are fastened via at least one quick-change device (21).

13. Application station (1) according to the preceding claim, wherein the quick-change device (21) comprises at least one angle compensation (22).

14. Application station (1) according to one of the preceding claims, wherein a supply (23) of venting devices (50) is provided.

15. Application station (1) according to one of the preceding claims, wherein at least one cutting device (24) is provided for separating the venting devices (50).

16. Application station (1) according to one of the preceding claims, wherein at least one guide device (25) is provided.

17. Application station (1) according to one of the two preceding claims, wherein at least one clamping device (26) is associated with the cutting device (24).

18. Application station (1) according to one of the preceding claims, wherein at least one bag material storage (27) is provided before and / or after the welding device (4).

19. Application station (1) according to one of the preceding claims, wherein at least one sensor device (28) and / or at least one control device (29) is provided.

20. Application station (1) according to one of the preceding claims, wherein the welding device is designed to be displaceable at least in sections.

21. Bag manufacturing device (200) comprising at least one supply (201) with at least one bag material (101) and at least one forming device (202) with at least one welding station (203), wherein the welding station (203) is designed at least for producing at least one tube (102) from the bag material (101), characterized in that at least one application station (1) according to one of the preceding claims is arranged between the supply (2) of bag material (101) and the forming device.

22. Bag manufacturing device (200) according to the preceding claim, wherein at least one storage device is associated with the forming device (202).

23. Bag manufacturing device (1) according to one of the preceding claims, wherein at least one device (300) for producing venting devices (50) is assigned.

24. Bag manufacturing device (1) according to one of the preceding claims, wherein the application station (1) and / or the welding device (4) is designed to be displaceable.

25. Method for applying a venting device (50) to a predetermined position of a bag material (101) with an application station (1) according to one of claims 1 to 20 and / or with a bag manufacturing device (200) according to one of claims 21 to 24, characterized in that at least one venting device is fed to the welding device (4) and is applied to the bag material at least in sections by means of the welding device (4).

26. Method according to the preceding claim, wherein the bag material is slit at least in sections by means of the punching device at the location predetermined for the application of the venting device (50) before the application of the venting device (50).

27. Method according to one of the two preceding claims, wherein the venting device (50) is Gripping device (8) is held in a defined manner before application / welding.

28. Method according to one of the three preceding claims, wherein the bag material (101) is conveyed substantially continuously, wherein the bag material (101) is stopped during the application of the venting device (50) in the region of the application station (1) by means of at least one bag material storage device.

29. Method according to one of the four preceding claims, wherein the bag material (101) is substantially continuously is conveyed and wherein the application station (1) and / or the welding device (4) is displaced parallel to the bag material (101) at least during the application of the venting device (50).

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