EP0029096A1 - Apparatus and method for the production of packages filled with a liquid - Google Patents

Abstract

A device for producing packs filled with liquid has a device for forming a paper web (10) having a thermoplastic coating into a tube, which can be pushed in the device step by step vertically from top to bottom. In this device there are also longitudinal and transverse embossing devices (22), sealing jaws (18) interacting in pairs for transverse sealing of the tube when it is stationary, at intervals corresponding to a pack length, a pair of cutting blades (50) arranged below the sealing jaws for separating the pack from the Hose in the area of a transverse weld seam (34) and rotatable support plates (53) arranged between the transverse sealing jaws (18) and the pair of cutting blades (50) are provided for the pack. In order to equip such a device with a higher output, to ensure proper metering of the filling quantity and to provide folding at the desired locations, it is proposed according to the invention that the transverse embossing device (15) be arranged above and the shaping station (19) below a feed device (17) are, their movements being coupled to one another and that the shaping station (19) has the respective pack (30), movable dosing jaws (51, 52) encompassing all sides. The latter are preferably movable longitudinal metering jaws (51) and transverse metering jaws (52) rotatable transversely thereto.

Description

The invention relates to a device for producing liquid-filled packs with a device for forming a paper web having a thermoplastic coating into a tube, which can be shifted vertically from top to bottom in the device, with a longitudinal and a transverse embossing device, also with in horizontally movable, mutually cooperating sealing jaws for transverse sealing of the tube when it is stationary, at intervals corresponding to one pack length, with a pair of cutting blades arranged one feed step length below the sealing jaws for separating the package from the tube in the area of a cross weld seam and with between the transverse sealing jaws ken and the pair of cutting blades arranged, rotatable support plates for the pack.

Such a device is known from DE-OS 21 31 906. In order to protect the fresh cross weld seam, a shut-off device was used to ensure that the liquid column was kept away from the cross weld seam during the feed step down while the paper web was squeezed together. This had the advantage that the cross weld seam could be pulled out of simple, non-cooled sealing jaws immediately and hardened down the step length during the feed because the goods to be packaged were only allowed to flow in afterwards by opening the shut-off device.

While special attention was paid to the tightness of the packs to be produced with the known device, deliberately the delayed inflow of the liquid to be packaged has been accepted.

The object of the present invention is now to provide the known machine with a higher output, to ensure a correct metering of the filling quantity and to provide folding at the desired points.

This object is achieved in that the transverse embossing device is arranged above and the shaping station below a feed device, their movements being coupled to one another, and in that the shaping station has movable dosing jaws encompassing the respective pack on all sides. Since there is usually more space than floor space available in the industry and the liquid filling material tends to flow from top to bottom in the prefilled paper tube, the device of the invention built vertically in height, so that the tube of the paper web provided with longitudinal embossing lines from above initially runs into the transverse embossing device, in which it receives the embossing lines arranged transversely to the direction of movement of the running paper web and obliquely thereto. The tube of the paper web then runs through the feed device and, downstream, the forming station. The novel cross-embossing device, which is explained in more detail below, creates the preconditions for the novel shaping station to reliably ensure that the liquid pack to be formed is perfectly formed at high work cycles. What is special about the new shaping station is the fact that the respective pack is provided with movable dosing jaws encompassing all sides.

To increase performance, the shut-off device of the known device has been dispensed with, so that the liquid has stood above the fresh transverse weld seam earlier, but only with a thin liquid column, the closed state of which is ensured according to the invention by the metering jaws being turned inwards at their respective positions lower edges moved towards each other and are held in such a position that the only partially preformed package remains in a precisely defined, stretched state. This advantageously prevents an undefined bulging of the parts of the paper tube which give the later side walls.

In a preferred embodiment, the invention is characterized in that two longitudinal metering jaws movable about pivot axes arranged parallel to the axes of rotation of the support plates and narrow metering jaws rotatable transversely thereto are provided. The hose is thus practically supported from four sides, the size of the surfaces can be set up in such a way that the dispensing jaws are arranged accordingly the later dimensions of the z. B. parallelepiped pack can result. The pivoting of flat jaws about axes of rotation is a simple measure, so that this results in reliably controllable and reliable partial structures of the device according to the invention.

In an advantageous further embodiment of the invention, the parts of the molding station in the work cycle are controlled in such a way that, after cutting through the transverse sealing seam, the bottom closure of the package forming above it is held by the support plates, which pivot upward into the horizontal while forming the bottom closure, while in synchronized Movement the dosing jaws apart, then close and seal the sealing jaws of the cross sealing device, after which they move apart while the closed package is being pushed downwards, swivel the dosing jaws towards each other and liquid flows into the stretched, partially formed package against the side walls of the package supported by the dosing jaws, and that the transverse sealing seam is then cut again. From this workflow of the device according to the invention one can see the appropriate measures for increasing the performance, ie increasing the work cycle of the machine. In contrast to the known device, the time during the downward movement by one pack length is used for the start of the inflow of the liquid to be packaged. So you make sure that you have a partially pre-filled package when cutting the cross seal. On the other hand, the dosing jaws ensure that this pack is kept in a defined, namely stretched, state. The fresh transverse sealing seam is loaded by a liquid column above it after the sealing jaws have been moved apart, but is only very weakly loaded by the measures according to the invention, because it only stands a very flat or thin, ie _' with a small cross-section, liquid column above the new cross-seam. The paper tube is pulled down by the feed device, so that the liquid slowly begins to fill and expand the tube. However, the dosing jaws, which converge at an angle downwards, prevent transverse pressure from tearing apart the transverse sealing seam. Nevertheless, the liquid can flow more and more into the freshly formed package.

Another advantage of the dosing jaws is that mentioned above, namely the support of the paper surfaces, so that the liquid slowly filling the pack and pushing it apart in the upper area can adapt to the desired stretched state of the partially preformed pack. This prevents undesired, undefined bulging of the paper web from the side. This advantageously results in the pair of cutting blades always meeting and cutting the transverse sealing seam at the desired height, preferably in the middle, at the bottom. The sealing seam at the bottom of the package separates the bottom package, which is formed at the bottom closure, from the top package, which is only partially preformed in the upper area, so it has to be severed in such a way that after separation, both the lower and the upper package are still absolutely liquid-tight . It is therefore important to have the correct height at which the transverse sealing seam is pushed into the engagement area of the pair of cutting blades. If one did not have the dosing jaws, an irregular bulging would also result in the transverse sealing seam being severed at different heights, which leads to rejects. According to the invention, this danger is advantageously eliminated.

By the control according to the work described above a faster work cycle is possible because the liquid can flow in during the feed and therefore takes less time to finally fill the package, while the fresh cross seal seam is not loaded and is instead held by the support plates.

This creates a powerful machine that is able to reliably produce liquid packs.

Although the described shaping station has the advantages explained, it is advantageous according to the invention if the embossing lines along which the package is folded in the shaping station and later finished in the final shaping station are always exactly in the right place with respect to the cutting lines and the pressure applied lie. This does not pose any problems for the longitudinal embossing lines. The cross embossing lines, on the other hand, can shift disadvantageously if the setting is inaccurate or the feed is inaccurate.

In particular, it has been found that when embossing grooves in a single or double layer paper web with jaws converging in the horizontal direction, which simultaneously form several grooves, undesirable paper tensions within the tool are obtained from one groove to another. It has therefore already started to use roller-shaped embossing tools. This allows paper to be drawn from all sides of the embossing point, e.g. B. are formed by the groove and web of opposing rollers, so that there are not too great stresses in the punch in the paper.

But it has been shown in the known devices that the outside, for. B. from a feed station, incoming paper has a different speed than on the discharge side, and one has also found different displacements, in other words also changes in the web speed of the paper, so that a certain point of a printed image is displaced with disadvantage. The synchronization between the embossing tools and the feed is therefore particularly important. For this purpose, complicated electronic controls have already been used to provide correspondence between two separate drives, namely the drive for the punching rollers on the one hand and the drive for the feed on the other.

It would now be useful if one could control the paper web with simpler means and yet with a synchronous movement between feed and embossing roller in such a way that only the feed needs to be changed by small sizes to insert the printing at the right place, while at the same time the transverse embossing of the Paper web is done automatically in the right places.

This is advantageously achieved according to the invention in that the transverse embossing device is fixed in a stationary manner on the machine frame and has two shells which are rotatable synchronously with one another and have the packing web between them, circular in cross-section and grooves and webs on the circumference, one of which has a belt or a chain is driven, on which a part attached to the feed device is attached. It is easy to drive the other embossing tray not driven by the belt with the first one, e.g. B. in that both shells are arranged on shafts provided with gears. In a packaging machine running at the high cycle speed according to the invention, this simple and robust coupling between feed and embossing device is surprising, because it succeeds despite the direct mechani fastening the belt or the chain to a rigid metal rod, e.g. B., which is attached to the feed, nevertheless a coupling that has been properly set up for all conditions with the effect of absolutely reliable synchronization between the embossing roller and feed.

The feed is to be thought of as oscillating, moving up and down. The control of the print image or its use at the right place on the paper web is done by small stroke variations on the feed.

It is also expedient according to the invention if one of the shells is mounted eccentrically and the eccentric is controlled pneumatically. On the return stroke, it is expedient if the rotary shafts of the two embossing rollers are separated from one another so that they can move back in the opposite direction to the embossing direction, while the paper web remains between them. Here too, according to the invention, a particularly simple, robust and thus reliable construction is selected, in which an eccentric is connected to a pneumatic drive on the drive embossing roller by means of a lever, in which the roll gap is enlarged via compressed air control from the outside at the moment of bottom dead center, which continues until the end of the return stroke until top dead center. Then the distance is reduced to the working size, so that the paper web can be provided with embossing lines in the desired manner during the preliminary stroke.

It is also advantageous according to the invention if the shells are designed as half shells. As a result, the embossing rollers z. B. completely out of engagement with the paper web during the return stroke.

A device for rotating processing of conveyed paper webs by punching or printing is already known, in which the work rolls are stopped are, one of which has a flattening, so that when the flattening is arranged next to the paper web, it is at least disengaged from the one work roll. In this known device, the work roll is, however, provided to oscillate freely about its axis and is caused to rotate uncontrollably by a weight after the locking is released. This means that this device cannot work synchronously. In addition, the known device has the disadvantage that the engagement of the punch rollers is actuated by the paper web itself. These uncertainties are advantageously eliminated according to the invention, and reliable synchronization is achieved with simple, mechanical and therefore particularly robust means.

• Fig. 1 eine Verpackungsmaschine im Gesamtaufbau,
• Fig. 2 perspektivisch die Darstellung einer Verpackung nach Verlassen der automatischen Ausformstation,
• Fig. 3 eine teilweise im Querschnitt dargestellte vergrößerte Einzelansicht der Ausformstation,
• Fig. 4 eine abgebrochen und teilweise ebenfalls im Schnitt gezeigte Ansicht eines Längsdosierbakkens der Ausformstation, wobei hier der Schnitt zu dem gemäß Figur 3 um 90° gedreht war,
• Fig. 5 eine ähnliche Ansicht wie bei den Figuren 3 und 4, jedoch bei einer anderen Ausführungsform mit Druckstempel, und
• Fig. 6 schematisch die Querprägeeinrichtung mit zwei halbschalenförmigen Prägewalzen.

Further advantages, features and possible uses of the present invention result from the following description of preferred embodiments in conjunction with the drawings. Show it:

• 1 is a packaging machine in the overall structure,
• 2 is a perspective view of a package after leaving the automatic molding station,
• 3 shows an enlarged individual view of the shaping station, partially shown in cross section,
• 4 shows a broken-off and partly also sectioned view of a longitudinal dosing jaw of the shaping station, the section here being rotated through 90 ° according to FIG. 3,
• Fig. 5 is a similar view as in Figures 3 and 4, but in another embodiment with a stamp, and
• Fig. 6 shows schematically the cross embossing device with two half-shell shaped embossing rollers.

The packaging machine shown partially schematically in Figure 1 consists of the vertical main part in the left half and the conveyor chain with the ends form stations, which is shown at the bottom right. The chain is denoted overall by 1 and its drive by 2.

The vertical part is driven by the motor 3 via the transmission 4 and a vertical drive shaft 5 which extends into the upper area of the machine and is supported at 6.

In the frame 7, behind the motor 3, the shaft 8 of the material roll 9 of the paper web 10 is mounted, which is shown with a dash-dot line in a U-shape from the material roll 9 via the deflection bend 11 on the other side until it is pulled shortly over the conveyor chain 1. The deflection bend 11 is pivoted with the aid of the push rod 13 about the pivot point 14 via a transmission linkage attached to the frame 7 and designated with a total of 12 above. Under the latter, the cross-embossing device, generally designated 15, the longitudinal welding station 16, the paper feed device 17, the cross-welding device 18 and the automatic shaping station 19 with the movable dosing jaws are shown in sequence.

• Während die Backen oder später beschriebenen Walzen der Querprägeeinrichtung 15 geschlossen sind, sorgt die Schubstange 13 für ein Hochschwenken des Umlenkbogens, so daß die Papierbahn 10 von der Materialrolle 9 nach oben durch das Walzenpaar 22 für die Längsrillung umgefaltet und längs der strichpunktiert gezeigten Mittellinie unter Doppellegen der Papierbahn 10 umgefaltet wird. Die Papierbahn 10 liegt außen über dem Umlenkbogen 11 auf und wird in dem Augenblick gegenüber dem Umlenkbogen 11 gleitend auf der rechten Seite vertikal nach unten gezogen, wenn diefrbeitswerkzeuge der Prägeeinrichtung 15 auseinanderfahren, während der Vorschub 17 sich nach unten bewegt und gleichzeitig die Schubstange 13 ein entsprechend durch die Walzenkurve 21 gesteuertes Herunterschwenken des Umlenkbogens 11 um die Drehstelle 14 in Gegenuhrzeigerrichtung besorgt. Hierdurch ist es möglich, die Abzugsgeschwindigkeit der Papierbahn 10 mit der Bewegung des Umlenkbogens 11 so zu erhalten, daß die Papierbahn immer gleichmäßig vorgeschoben werden kann, ohne daß die träge Masse der grossen Materialrolle 9 eine nachteilige Rolle spielt. Nach dem Abzug hinter der Drehstelle 14 gelangt die Papierbahn 10 zunächst in die Querprägeeinrichtung 15, wo die notwendigen, zur Bahnrichtung schrägen oder quer verlaufenden Rillungen bzw. Prägungen eingebracht werden. Die Längsnaht wird in der Einrichtung 16 geschweißt, wonach die Papierbahn 10 die Vorschubeinrichtung 17 nach unten durchläuft und in die Quersiegelstation 18 gelangt, unter der in der Ausformstation 19 eine Packung vorgeformt und schließlich vereinzelt wird.

The vertical drive shaft 5 is arranged with various cam disks, not specified, and the cup 20 with the roller cam 21. The deflection bend 11 and the work stations 15 to 19 are driven by these elements in a manner as described as follows:

• While the jaws or rollers of the cross-embossing device 15, which are described later, are closed, the push rod 13 ensures that the deflection sheet is pivoted upward, so that the paper web 10 is folded upwards from the material roll 9 by the pair of rollers 22 for the longitudinal creasing and along the center line shown in broken lines under double layers the paper web 10 folded over becomes. The paper web 10 lies on the outside over the deflection sheet 11 and is slid vertically downwards on the right side at the moment opposite the deflection sheet 11 when the working tools of the embossing device 15 move apart while the feed 17 moves downwards and at the same time the push rod 13 is inserted correspondingly controlled by the roller cam 21 pivoting down the deflection 11 about the pivot 14 in the counterclockwise direction. This makes it possible to obtain the withdrawal speed of the paper web 10 with the movement of the deflection sheet 11 so that the paper web can always be advanced evenly without the inertial mass of the large roll of material 9 playing an adverse role. After the take-off behind the turning point 14, the paper web 10 first arrives in the transverse embossing device 15, where the necessary creases or embossings which are oblique or transverse to the web direction are introduced. The longitudinal seam is welded in the device 16, after which the paper web 10 passes through the feed device 17 downward and reaches the transverse sealing station 18, under which a package is preformed in the forming station 19 and finally separated.

The isolated package 30, which falls down after leaving the molding station 19, is shown in perspective in FIG. 2. Its bottom closure 31 is fully formed except for the protruding tabs 32, while the upper closure 33 is still stretched The double triangular flaps 32 are also located at the front and rear at the upper closure 33, the transverse sealing seam 34 can also be seen at the top and at the bottom, and the longitudinal sealing seam 35 at the rear right , 3 and 5 from the front narrow side 36 and in the illustration of FIG. 4 from the wide side wall 37 hen, the improved molding station 19 is first explained below.

This is to be understood in broken-off and partially sectioned views with reference to FIGS. 3 to 5. One can see in the upper part the transverse sealing station, generally designated 18, and underneath it, the forming station 19. The sealing jaws 43 are held on a carrier 41, which is arranged on both sides of the paper web 10 and can be moved back and forth in the direction of the double arrow 42, and by means of unspecified ones Screws connected to the carrier 41 so that they move in the direction of the double arrow 42 just like the carrier. To produce the transverse sealing seam 34, they move towards the paper web 10 and press it between them in the manner shown in FIG. 3. When the sealing jaws 43 move apart, a transverse sealing seam is created which has a double width, namely for the upper transverse sealing seam 34 of the lower package 30 and also for the lower transverse sealing seam 34 of the upper pack 30 or above. This pair of transverse sealing seams is represented by the bottom The blades 50 shown are severed centrally to form the two transverse sealing seams 34 mentioned.

Below the cross-welding device 18 is the shaping station 19, which, in addition to the device with the pair of cutting blades 50, essentially consists of longitudinal metering jaws 51 and transverse metering jaws 52 and two support plates 53. 3 shows the two longitudinal metering jaws 51 which can be pivoted about the axes 54 and which bear against the longitudinal side walls 37 of the pack 30 shown in FIG. 2, while around axes 55 arranged transversely to the axes 54, a transverse metering jaw 52 on each side against the narrow side walls of FIG Pack 36 comes into contact, of which only the left transverse dosing jaw 52 is shown in FIG.

The metering jaws 51, 52 are driven mechanically via tie rods, lever gears, etc., of which only the tie rod 56 is shown in FIG. 3, which is attached to the left metering jaw 51 so that it moves in the direction of the curved double arrow 57 around the axis 54 pivots. Due to the sliding block 58 attached to the axis 54 and the left longitudinal metering jaw 51, which is movably arranged in a fork 59 attached to the right longitudinal metering jaw 51, the latter right longitudinal metering jaw 51 is simultaneously moved in the direction of the curved double arrow 57.

The support plates 53, which rotate about the axes 60, are driven in a similarly pivotable manner, specifically from the horizontal position shown in solid lines in FIG. 3 to the position shown in broken lines, that is to say corresponding to the curved double arrow 61.

These pivoting or translationally moving parts are driven via the various cam or cam disks according to FIG. 1. The execution of these rotary movements, even so that they are synchronized with one another in the desired manner, can be carried out by a person skilled in the art after appropriate task and instruction, so that a complicated representation of these drives can be dispensed with here in detail. This also applies to the illustration in FIG. 4, in which control lever 62 ensures the pivoting movement of the transverse metering jaw 52 in the direction of the curved double arrow 63.

• Aus der in Figur 3 gezeigten Stellung fahren zunächst die Siegelbacken 43.in Richtung des Pfeiles 42 nach rechts bzw. links auseinander, während der Vorschub von oben die Papierbahn weiter nach unten so fördert, daß die Siegelstelle, d. h. die zwei direkt aneinander angeordneten Querschweißnähte 34 aus der in Figur 3 gezeigten Position nach unten in Höhe des Schneidklingenpaares 50 fahren, wo sie durchtrennt werden, so daß nach dem Vorformen durch die auseinanderfahrenden Dosierbacken 51, 52 und Herunterfördern dann die unten gezeigte vorgeformte Packung 30 vereinzelt ist und auf die in Figur 1 gezeigte Förderkette 1 fallengelassen werden kann. Man erkennt bei der die Ausformstation 19 verlassenden Packung 30 die untere sowie die obere Querschweißnaht 34, den unteren vollständig ausgeformten Verschluß 31, während die Oberseite der Packung nur erst schwach vorgeformt ist.

The paper web or partially preformed package is shown in the forming station 19 with solid or dashed lines. Based on this, the function should be briefly explained:

• From the position shown in FIG. 3, the sealing jaws 43 first move to the right or left in the direction of the arrow 42 while the feed of above the paper web further down so that the sealing point, that is, the two cross welds 34 arranged directly next to each other, move downward from the position shown in FIG Dosing jaws 51, 52 and then conveying down the preformed package 30 shown below is isolated and can be dropped onto the conveyor chain 1 shown in FIG. 1. In the case of the package 30 leaving the molding station 19, the lower and the upper transverse weld seam 34 and the lower, fully molded closure 31 can be seen, while the upper side of the package is only slightly preformed.

Before the pair of cutting blades 50, however, cuts through the transverse weld seams 34 in the center, the dashed position of the pack is reached between the metering jaws 51, 52. When the transverse welding seams 34 are moved down from the sealing jaws 43 to the height of the pair of cutting blades 50, the longitudinal and transverse metering jaws 51 and 52 move inwards from the position shown in order to support and hold the thin tube of the paper web 10 filled with liquid. It goes without saying that in this case the support plates 53 simultaneously pivot downward, so that finally the positions of the pack and dosing jaws shown in broken lines are adopted. The weight of the liquid causes the pack walls to be pushed apart, although the lower transverse sealing seam is hardly loaded. After being cut by the pair of cutting blades 50, it is immediately clamped and held between the two support plates 53. Now the actual shaping begins by raising the support plates 53 according to the double arrow 61 upwards, while at the same time the longitudinal dosing jaws 51 pivot outward in the direction of the double arrows 57. Finally, the position shown in solid lines in FIG Pack 30 reached. The measure starts again.

In the embodiment shown in FIG. 5, the longitudinal metering jaws 51 'are again shown, the left of which are controlled by the ball joint head 65 via sliding block 58 and fork 59 in the manner described above. The difference between the embodiment of FIG. 5 and that of FIG. 3 is that here a pressure ram 66 is arranged adjustable in a recess 68 via a dosing screw 67 in order to reduce the volume of the package 30 shown in FIG. 3 by a small amount Increase or decrease values. If necessary, both longitudinal metering jaws 51 'could also be provided with such a pressure stamp 66.

The cross-embossing device 15 shown schematically in FIG. 6 has two half-shell-shaped embossing rollers 70 and 71, the roller 70 being provided with webs 72 and the roller 71 with grooves 73 at certain points spaced apart from one another in order to achieve the usual transverse and oblique folds or creases to provide. The embossing shells 70, 71 can be rotated about the axes 74, in an oscillating or reciprocating movement. The right half-shell 74 is connected directly to the left half-shell 70 via a gear, not shown, so that when the left is driven, the right half-shell automatically runs synchronously.

In contrast to the right embossing shell 71, the left shell 70 can be pivoted via a schematically illustrated eccentric 75 in such a way that the distance b between the axes 74 is adjustable. The eccentric 75 is mechanically displaced by a lever 76 which is driven by a compressed air cylinder 77. The latter is pressurized with compressed air, which is controlled via the feed 17 schematically indicated below.

The left embossing shell 70 is driven by a belt 78, which is placed over sprockets or pulleys 79, which are freely rotatable. A rod 80 is fixedly attached to the feed, which is firmly connected at 81 to the belt or chain 78 in such a way that when the feed is ramped up during the return stroke, the belt 78 makes a movement such that the left embossing shell 70 is pivoted counterclockwise and vice versa.

Finally, a specific location of a printed image is identified by arrow 82, which, for. B. can be scanned by a photocell 83.

The operation of the transverse embossing device 15 according to FIG. 6 now takes place in such a way that the two half-shells 70 and 71 are rotated out of engagement from one another even further than in the illustration in FIG. 6, while the center distance b had the greater value. Now the pneumatic cylinder 77 is actuated and moves the eccentric 75 to the right so that the distance b between the axes 74 takes on the small value. The feed 17 begins with the downward stroke and pulls down the right run of the belt 78 via the connection point 81. As a result, the two embossing trays 70 and 71 are rotated in such a way that the single-layer or double-layer paper 10 passing therebetween is punched at the desired locations. After reaching the bottom dead center, the pneumatic cylinder 77 increases the center distance b, the feed moves upward, the half-shells 70, 71 rotate again in the starting position, and the game can start again.

Instead of introducing the longitudinal embossing into the material web before the transverse embossing, as described above, the entire embossing, that is to say longitudinally and transversely, can be carried out by the described embossing device 15. In other words, with the cross embossing too the _L ängsprägung performed. This has various advantages. With regard to the liquid pack to be created, it can be very important, cheap and advantageous if the longitudinal embossing is only carried out at certain, desired locations. For example, it may be desirable to interrupt the longitudinal embossing at certain points in order not to endanger the tightness of the liquid pack there later. It is also possible in this way to provide not only the transverse embossing lines but also the longitudinal embossing lines in a defined manner, that is to say partly weaker and partly stronger. It can namely be expedient and advantageous for the pack to be produced to make a deep groove in some places for the purpose of sharp bending and in other places only shallow or shallow grooves for less sharp folding in the material web. This applies to the longitudinal embossing as well as the transverse embossing.

These advantages, which result from the two embossing shells 70 and 71, which are driven synchronously with one another, enable the production of reliable, correctly folded and sealed liquid packs with great output.

Claims (7)

1. Device for producing liquid-filled packs with a device for shaping a paper web having a thermoplastic coating to form a tube which can be pushed vertically downwards in the device, with a longitudinal and a transverse embossing device (22), furthermore with Sealing jaws (18), which can be moved in the horizontal direction and interact in pairs, for transverse sealing of the tube when it stops, at intervals corresponding to a pack length, with a pair of cutting blades (50) arranged one feed step length below the sealing jaws (18) for separating the package from the tube in the area of one Cross weld seam (34) and with rotatable support plates (53) for the pack arranged between the cross sealing jaws (18) and the pair of cutting blades (50), characterized in that the cross embossing device (15) above and the shaping station (19) below a feed device (17 ) are arranged, wob ei their movements are coupled to each other, and that the shaping station (19) has the respective pack (30) encompassing movable metering jaws (51, 52) on all sides. 2. Device according to claim 1, characterized in that two parallel to the axes of rotation (60) of the support plates (53) arranged pivot axes (54) movable longitudinal dosing jaws (51) and two transverse dosing jaws (52) rotatable therewith are provided. 3. Apparatus according to claim 1 or 2, characterized in that the parts (50-53) of the molding station (19) are controlled in relation to each other in the working cycle of the device such that after cutting the cross seal (34) the bottom closure (31) of the package (30) forming above it is held by the support plates (53), which pivot upwards into the horizontal while forming the bottom closure (31), while the dosing jaws (51, 52) move in synchronized motion move apart, then close and seal the sealing jaws (43) of the transverse sealing device (18), after which they move apart while the closed package (30) is being pushed downwards, pivot the dosing jaws (51, 52) towards one another and liquid into the stretched partially formed package (30 ) flows against the side walls (36, 37) of the pack (30) supported by the dosing jaws (51, 52), and that the transverse sealing seam (34) is then cut again. 4. Device according to one of claims 1 to 3, characterized in that an adjustable pressure stamp (66) is arranged in at least one dosing jaw (51 '). 5. Device according to one of claims 1 to 4, characterized in that the transverse embossing device X15) is fixed stationary on the machine frame (7) and two synchronously rotatable, the packing web (10) between them, circular in cross-section, circumferential grooves ( 73) and webs (72) having shells (70, 71), of which a shell (70) is driven by a belt or chain (78), on which or a part fastened to the feed device (17) (80) is attached. 6. Device according to one of claims 1 to 5, characterized in that one of the shells (70) is mounted eccentrically and the eccentric (75) is pneumatically controlled. 7. Device according to one of claims 1 to 6, characterized in that the shells (70, 71) as half shells are trained.

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