DE2402137A1 - MACHINE FOR MANUFACTURING PACKAGING CONTAINERS - Google Patents

Description

Patent attorney Dr. E. Boeltner O / Λ O 1 O «7

Diploma HJ. Müller J, 4 U I IO /

Dr. Th. Lerendt _T p

D 8 Munich HB

Ä-Grabn-Stt. 38, Tel. «51 pp

Tetra Pak Developpement SA, 2, rue de la Paix, Lausanne

(Switzerland)

Machine for manufacturing packaging containers

The invention relates to a machine for producing Packaging containers, having an apparatus for forming a series of interconnected U-shaped sections by splitting a continuous first band of foldable material, a device for applying the first band to a second band made of foldable material, a device for folding down the edge areas of the second tape against the side edges of the first folded tape, a device for sealing the juxtaposed Areas of the two bands along their contact surfaces for producing cavities in the form of Parallelepipeds and a device for filling these cavities with filling material »

The packaging containers themselves are often used to pack goods at the same time as the feed to be packaged Good made for the packaging containers. The packaging containers are also punched out Preformed flaps which are collapsed in an automatic machine to form a container, or

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the packaging material is fed in the form of a belt, which is e.g. folded into a tube, the longitudinal edges of which are tightly connected to one another, whereupon the liohr is filled with the product and then by means of successive sealing operations in the transverse direction to the pipe axis is sealed. That way severed tubing pieces can then be subjected to molding operations so that ζ.Β «has a parallelepipedic end form arises.

In this known production method for packaging containers inevitable waste arises from the fact that some of the packaging material is used up for the tab assembly or other parts that are not directly parts of the packaging container body. Venn ζ, Β · one pipe section sealed at right angles to the pipe axis If a parallelepipedal shape is given, a triangular, double-walled tab is created at each corner, the packaging material is consumed and not directly part of the packaging container itself but useless Represents waste ο

In practice it has been found that the packaging of packaging containers from a tape of the production of Packaging containers made from preformed parts is preferable. The main reason for this is that tape-shaped packaging material is available in rolls in which the surface of the packaging material is well protected between adjacent turns in the roll, whereas prefabricated parts are not protected in the same way can be. In addition, what is stored in roles takes

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Packaging material considerably less Hardly a and is easier to transport than packaging material in the form of preforms. In addition, the compact rolls of packaging material require considerably less wrapping or packaging during the Transportes, which is a great economic advantage represents.

As mentioned, however, undesirable waste occurs when, for example, parallelepiped packaging is made from a tape which is folded into a tube. To reduce this waste as much as possible, there is a machine of the type described above designed so that the device for folding the first tape comprises a former, on which the first band is formed, that several such formers one behind the other in the direction of advance of the first band are arranged and movable and that the device for applying the second band to the first band is a feed drum which communicates a feed movement synchronous with the movement of the former to the second belt. According to an advantageous embodiment of the invention is provided that the formers for folding the first band are arranged in an endless row one behind the other and with constant speed are movable, and that a rotatable with a shaft molding tool with one or more curved mold surfaces is provided which presses the first tape into the former to bring the tape into contact with it to bring the walls of the former and thereby the tape in a shape corresponding to the contours of the surfaces to bring the shaper.

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In the following the invention is explained using an embodiment of a machine with reference to drawings in which identical items are provided with the same reference numerals everywhere. Show it:

Fig. 1 is a schematic front view of the machine; 2 schematically shows the drive of the machine; Fig. J a and j b a drive device for a

Machine molding tool;

FIGS. 4 a to f show the forming processes when folding a tape

from packaging material;

Fig. 5 is an end view of a feed drum;

Fig. 6 is a side view of the partially sectioned feed drum;

7 shows a drive device for the feed drum;

Figure 8 is a perspective view for bringing them together the tapes of packaging material and the sealing of folded-down flaps of the second tape the folded side edges of the first tape;

Fig. 9 shows a device for sealing the central portion of the second band to the upper ends of the folded one Tape and a device for separating the sealed, individual packaging containers;

Fig. 10 is a partially sectioned end view of that Part of the machine by means of which the strips of packaging material are joined and joined together be tightly connected;

11 is a perspective view of the drive device for the arrangement according to FIG. 10;

Fig.12a shows a series of interconnected packaging containers, made with a machine according to the invention;

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Fig. 12 b shows the machine according to the invention manufactured, separated packaging container.

Even if different materials or material combinations Can be used as packaging material, such as plastic film, plastic-coated Paper, with plastic and paper or other laminatable ones Materials coated metal foil, it is assumed in the following description that the packaging material a band made of foamed plastic, e.g. polystyrene foam, which is at least on one side has a layer of homogeneous plastic, e.g. polystyrene. The two tapes that are after molding butted together and tightly connected to one another do not necessarily have to be of the same strength. Of simplicity However, for the sake of the following it is assumed that the strips of packaging material are made of the same Materials are made and have about the same strength »However, one of the two bands, namely the one above a feed drum is fed, be considerably wider than the other belt, which is made by means of a forming tool will be shaped,

First, a general description of the machine is given to illustrate the principle of the machine, to what the various details of the machine are described in detail in the details shown.

General description of the machine

In the front view of the packaging machine according to FIG. 1 is the housing of the machine with the reference number 1,

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a device for treating and finishing the manufactured packaging containers is denoted by the reference symbol Jj, an automatic packing device is denoted by the reference symbol 1, 5 and a packaging material part is denoted by the reference symbol 58.

The packing material part 5 comprises a number of kollen frames with iiaga.zin rollers for packaging material. Packing material strips are wound onto the rolls 8 and 9, which in the present case consist of exported, foamed plastic tape made of polystyrene, which or is coated on both sides with layers of homogeneous polystyrene. The belts 5 and 6 are taken from the magazine- rolls 8 and 9 unwound and guided over guide rollers 25. A magazine roll 10 carries strip material 7 Made of homogeneous plastic, which is intended to cover openings in the finished packaging containers.

The machine itself comprises the housing or frame 1 carrying a rotatable feed drum 2J over which the band 6 of packaging material is fed and on which operations are carried out at stations distributed along the circumference of the feed drum. In the exemplary embodiment shown, this scope is divided into 12 sections or segments. The packaging machine further comprises a device 2 for forming the band 5. The device 2 comprises movable formers h which are attached to an endless chain which revolves in FIG. 1 in the clockwise direction. The device 2 further comprises a forming tool 3, which can be seen as a rotatable, double-armed wing by means of which the belt 5 is brought into contact with the formers 4 to form a series of interconnected U-shaped ones

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Sections to be formed »In Fig. 1, a supply line 20 for the goods to be filled into the packaging container, a control valve 21 for controlling the filling quantity of the goods and a filling pipe 19 are shown» 15 denotes a heating device and 22 a hot air line. Furthermore, a back and forth movable carrier 13 is provided, which is guided in a bearing Ik connected to the frame 1. The carrier 13 carries a folding tool 16, a sealing device 17 and a cutting tool 18, all of which move together with the carrier as it moves to and fro. This to-and-fro movement is coordinated in such a way that the carrier moves backwards and backwards upwards in synchronism with the molds k.

The finished packaging containers 30 are transferred from the molds k of the molding device 2 to the finishing device 33 by means of a conveyor belt 2b which runs between two end rollers 29 and a transport or drive wheel 27 which is arranged between the end rollers 29. In the finishing device 33, sealing fins or the like are moved in such a way that they give the packaging containers 30 a prettier appearance and free them from protruding corners or hands which the packaging containers could hook into one another during transport or storage. The packaging containers 30 are held in an endless chain in the finishing device, which has protruding parts that have spaces between them, into which the packaging 30 can be introduced with the aid of a conveyor belt 31 which runs around an end roller 32 and the aforementioned end roller 29 . The processing is carried out using

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a processing tool ^r j6, whereupon the packaging containers are finally delivered to the automatic packing device 35 by means of a device 'Jk, from which the packaging containers are placed in transport cartons or baskets for distribution.

The machine works as follows:

From the magazine reel 8, a band 5 of packaging material is first unrolled, which is guided over a guide roller 25. The tape 5 is unwound with the aid of a drive roller 24 which is controlled by a photocell arrangement with two photosensors 11. If an excessive length of tape 5 is unwound by means of the drive roller 24, the loop of the tape according to FIG. 1 covers the lower photocell sensor 11. In this case, a pulse is emitted which stops the drive device for the drive roller Zh also stopped, so that the loop becomes smaller, and when the loop has become so lclein that it releases the photocell sensor 11, the manual feed is switched on again. The tape 5 is brought into contact with the formers k of the molding device 2. The formers 4 are arranged on an endless chain that moves at constant speed in a closed path. The band 5 is brought into contact with the mold 4 by means of a molding tool 3. This molding tool 3 consists of a rotatable and pivotable double-armed wing, the mode of operation of which is explained in detail in the detailed description of the machine. Hit help of the molding tool 3 that will

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Belt 5 brought exactly into contact with the formers, h and thereby folded into an endless series of U-shaped sections, which are formed by the forming device 2 during the downward movement at constant speed.

The second end 6 is unrolled from its magazine roll and guided over a guide roll 26 and then brought into contact with the feed drum 23. As already mentioned, the feed drum 23 has 12 shaped surfaces, the width of which corresponds approximately to the distance between two successive formers h of the forming device 2. The feed drum 23 rotates at a constant speed, while a vibrating plate 59 moves around the feed drum 23 in an oscillating rotary motion. The oscillating plate 59 carries processing devices such as a punch, an application device 60 for a cover strip, a forming and cutting tool 61 and a heating device 02. When the belt 6 is guided past the processing stations 60, 61 and 02 with the aid of the feed drum 23, pouring holes are made in the belt punched in, a cover strip applied over the casting holes, the tape heated and possibly thermoformed, and land areas of the tape cut at right angles to its longitudinal direction. A strip 7 of homogeneous plastic is unwound from the magazine roll 10 and is brought over the pouring hole by means of the application device 60 for the cover strip, so that it is closed. Furthermore, the front end of the strip 7 is cut off by means of the application device for the strip, so that this front end is separated from the remaining strip 7 in order to cover the pouring hole. The band 6 with the pouring hole and the opening

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device in the form of the applied strip, which is also provided with the slots on its side edges, which have a length approximately corresponding to the height of the former k , is moved by means of the feed drum at the same speed as the cancellation 4, whereby the Band 6 is advanced until its central area is located above the upper ends of the former 4, while the slotted side areas of the band protrude laterally beyond the former 4. By means of a control device, not shown, the tape is fed with the aid of the feed drum 23 in such a way that the slots in the tape 6 are aligned directly in the extension of the right-hand dividing walls of the formers 4.

While the belt 6 is moved on by means of the feed drum 23 synchronously with the formers 4, the carrier 13 assumes its upper end position and begins a downward movement, which also takes place synchronously with the movement of the formers 4 - 4. The carrier 13 carries a heating device 15 which is connected to the hot air line 22. Via the heating device 15, hot air is blown through the holes, which are arranged in a special pattern next to the underside of the strip zones of the belt 6, which are delimited by the slots, whereby the strip material is smoothed and activated for sealing and at the same time the strip zones of the strip 5 ^A n the side edges of the molds can be heated by blowing hot air on them.

Simultaneously with the heating of the edge zones of the ligaments and 6, which are to be tightly connected to each other, with the assistance of the heating device 15, the through the Slits in the band 6 formed tabs or tabs

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folded down, with the help of folding wings of the folding device 16 against the sides of the former k. As a result, the edge zones of the tabs of the band 6 and the edge zones of the parts of the band 5 come together, which in a previous operation were heated by the heating device 15 to such an extent that the folded areas of the bands are welded to form a mechanically permanent and permanently tight connection which is stabilized by the folding tool 16, which cools the sealing surfaces during the period in which it is in contact with the folded-down flaps of the band 6. When the belts 5 and 6 are connected to one another by the side seal in the manner described, the filling material is introduced into the container through the filling pipe 19, which is arranged under the belt 6, but above the upper ends of the former k , the box-like , lläume formed under the belt 6 are filled with the filling material. The box-like spaces are sealed by means of the sealing device 17 to form tight individual packages, in which the band 6 is tightly connected to those areas of the band 5 which are located above the upper ends of the upright parts of the former k . The sealing device 17 is also connected to the carrier l'J and follows it in its reciprocating movement. The sealing thus takes place while the carrier moves downward in synchronism with the formers k. In the example shown, the sealing device is of an ultrasonic type. However, it is also possible to use a heating device of a conventional type. The closed individual packages are finally separated from one another with the aid of the cutting device 18, which the closed

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Packaging by means of a cut through the sealing zoria separates, which were produced by means of the sealing device 17.

The filled and closed packaging containers 30 are held at the bottom in the formers by a conveyor belt 28 which runs between end rollers 29 below the forming device. The packaging containers 30 are conveyed by means of transport wheel 27 having extending therefrom wings to the processing apparatus, -where any projecting sealing edges are removed by means of a processing device '} &, after which the finished packaging container will eventually be brought to the automatic packing apparatus 35 by means of the device 34, where the Container 30 can be accommodated in cardboard boxes or transport boxes. The machine can be controlled by a control and actuation pulse 12, which has the necessary actuation devices and control instruments for displaying the temperature in the various heating zones, etc.

The drive of the machine can be seen from FIG. 2, in which the main motor is denoted by 37 and a gear unit coupled to it is denoted by 38. The transmission output wheel 39 of the transmission 38 meshes with an intermediate wheel 49, which transmits the drive torque of the motor to a wheel 41 which sits on the same skin as the V-shaped belt pulley or toothed belt pulley 42 in cross section. This shaft simultaneously represents the drive shaft for the forming device 2 and the chain carrying the former 4. By means of the belt pulley 42, a torque is transmitted via a V-belt or a toothed belt 43 to the intermediate wheel 44, which is seated on a shaft 48. There is one on shaft 48

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further belt pulley is arranged, of which a V-belt or toothed belt kjy transmits a moment to a pulley 46, which is seated on a shaft k7 driving the feed drum 23.

The Iiad 41 also drives a Had 57 seated on a shaft 50. A transmission wheel 27 is also seated on the shaft 50. The gear 57 drives a had 56, which in turn is seated on a shaft 51 by means of which the finishing device j'J is driven. Furthermore, on the shaft 51 sits a large cage 55 j which meshes with a smaller wheel 5 ^ which drives a chain 5'J from an auxiliary motor 52 via a chain wheel with a locking device or coupling. The small wheel 56 sits on the shaft 51 which is connected to the shaft 50 via a locking device.

When the main motor 37 drives the engine, the torque is transmitted via the wheels jy, 40, 41 and 57 to the wheel 56, which transmits the torque to the shaft 51 via the locking device. The auxiliary motor 52 is then switched off and the chain 513 is immovable on the same shaft as the wheel 54 due to the locking device in the chain wheel. When the main motor 37 has stopped, the auxiliary motor 52 can be started and the finishing device 33 can drive the finishing device 33 via the sprocket with locking device of the chain 53> the iiad 5 '* dcis wheel and the shaft 51. The locking device between the shaft 5 'and the wheel 5 ^ uncouples the shaft 51 from the wheel 56', the purpose of this arrangement is that the finishing device 33 should also be drivable when the other parts of the machine are not working.

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BAD ORIGINAL COPY

402137

Ση Fig. I'd a is a series partially in cross section

-en
of interconnected ". packaging containers shown j.

how they are in. the. H formers of the forming apparatus 2 · represent "1 / IE of FIG» 12a visible, the associated üeihe the packaging container formed from the folded to XJ-försigen portion .5 band and the belt 6 30, which along its side. Edges with slots 6'J for forming lobes or flaps. _S 64 is provided which is folded U-shaped against the ends of the sections of the belt 5 and are sealed against it. The upper ends of the folded U-Ab schult te of the tape 5 are with the. central areas of the band 6 along the diclitsons 6 ^ connected. By means of a cut through the Diclitzoner * 65, individual packaging containers of the type shown in are shaped and are tightly connected to one another along surface areas through which they are brought into contact with one another «

A series of interconnected packaging containers according to rig. 12a can only be produced when the cutting tools for cutting, individual containers are removed or uncoupled "However, this is oiine effort raüglich sv / hen a AeIIiO of interconnected containers jevransclii v" ^r ird <The oebneidweriezeuge may further such a manner are arranged la , ciaiJ one desired "number" on. uiiteinaiider linked packaging containers., Ξ.Γ .. fvto ± and sv / ei or five and five, ν ο sei nand ei "separate.

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Following this general description of the machine will be in the following details and assemblies of the machine according to FIG. 1 are described in detail.

Special description of the machine I) Folding device

The folding process is shown in FIGS. 4a to f, the band 5 being shaped into a series of interconnected U-shaped sections by means of the shaping device 2 (FIG. 1). The shaping is carried out in such a way that the belt 51, which may have been previously provided with fold lines to facilitate folding, is brought into contact with the formers 4, which are articulated to one another to form an endless chain. Each former 4 consists, as can be seen from FIG. 4, of an L-shaped link with an upright part 66 and a bottom part 67 β. The chain formed by the former 4 is guided and driven by means of drive wheels. The shaft of the upper drive wheel is denoted by 48. The formers can advantageously be provided with guide rollers which can run in fixed guideways which are arranged along the path of movement of the molding device.

By means of the drive shaft 49 (Fig. 2), which is described in the Way is driven by the main motor, the chain formed by the former 4 is at a preferably constant Speed driven in the direction of the arrow. That too folding belt 5 is connected to the formers 4 by means of the rotatable Forming tool 3 in. Brought in touch, which made two vanes 68 attached to a shaft 104.

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The i / eile 1 O4 is for its part on a back and forth moveable Swivel arm mounted, the drive of which will be explained in the following. The two wings 68 have a curved one lateral rolling surface 125 and curved rolling surfaces at the ends"

The molding process is such that the chain of the former 4 moves at a constant speed in the direction of the arrow and that the swivel arm of the ¥ elle 104 of the molding tool communicates an approximately synchronous movement with the former. In Fig. 4a it is shown how the plate 104, which carries the wings 68, rolls over the upper end surface 70 of the upright parts 66 of the former 4 and at the same time moves in a clockwise direction synchronously with the former 4. When the heads 104 rotate, the wings 68 of the forming tool rotate with it, and the band 5 is moved into the next following former.

In FIG. 4b the molding process is shown at a somewhat later point in time, and in FIG. 4c the wing 68 of the molding tool 3 has moved the band 5 almost into the corner point 6y of the former 4. The pivot arm begins a return movement at the same time as the contact between the shaft 104 and the upper end surface 70 of the former is broken. While the swivel arm and the molding tool 3 are moved against the direction of movement of the former, the curved end face 124 of one wing 68 of the molding tool J presses the belt 5 against the bottom part 67 of the former 4 in a sliding-free rolling motion.

In Figure 4e, the edge of the wing 68 has the distal end

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of the bottom part 67, whereupon the belt 5 comes into contact with the front wall of the next following former in the direction of movement by means of the curved rolling surface 1 25 of the wing 68. In Fig. 4f the entire rolling surface of the wing has rolled over the front wall of the next former 4 and the shaft 104 has just come into contact with the upper end surface 70 of this former, over which the shaft 104 can roll while the belt 5 simultaneously is pressed against the end face 70. In the position according to FIG. ^ F, the shaft 104 is again communicated a movement by the pivot arm 102 which is synchronous with the movement of the former h , and the position according to FIG. 4a is reached again

In the foregoing, a complete cycle is described which is repeated each time the belt 5 is in contact comes with the formers 4 ·. Due to its rigidity, the packaging material remains in its old condition, without that the contact between the mold surfaces of the formers would be interrupted, which is a prerequisite for represents a successful molding.

The band 5 can expediently with a printed text or Ornament of promotional or informative character can be printed, and it is important that the fold is in alignment is made on the imprint. It was found that a pre-printed tape 5 »which is provided with fold lines will facilitate the folding with proper alignment of the prints on the U-shaped sections, because the folding takes place along fold lines that can be previously aligned with the imprints. When bands 5 to be used without fold lines, it is necessary that the

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To design the feed of the tape so that it is matched to the imprint ". Normally the position of imprints or ornaments relating to the U-shaped sections by means of photocell devices, not shown determined which marks on the tape 5 detect and the advance of the tape as a puncture of the measurement result adjust so that the print aligns with the folds of the molded sections. In the present case the feed can be adjusted in such a way that the swivel arm in which the shaft 104 is mounted briefly pans forward at a greater speed, than the feed rate of the former 4 without however, the contact between the shaft 104 and the upper end surfaces 70 of the former 4 is broken. Such a one a slight adjustment of 1 to 2 mm has no noticeable effect on the appearance and the liaum content of the finished container, but is sufficient to align the imprint on the container.

To allow sliding between the shaft 104 and the belt 5 to avoid on which the shaft 104 rolls while passing the upper end surfaces 70 of the former 4, the Surface of the shaft 104 with a friction-enhancing Coating, ζ.Β «with a rubber lining, or grooves or other interruptions on the rolling surface exhibit.

In Fig. 3a is a view of a drive device in a section for the molding tool 3, while FIG. 3 shows the drive arrangement in a perspective view from the other side shows "Xm is the following the drive arrangement is described using these two figures,

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The drive arrangement: comprises a housing 100 with an opening 101 through which protrudes the elle 104 on which the molding tool 3 is seated. The shaft 10-1 is rotatably mounted in the upper pipe section IO3 of the swivel arm 102, and a bearing 126 (FIG. Jb) of the shaft carries a belt pulley 105 which is firmly connected to the shaft 104. The pulley 1 0'J is coupled via a toothed belt 106 with another pulley which is seated in turn fixed on a shaft 111, which further comprises a cam disk 108 and a wheel. 110 carries ο The gear 110 meshes with a gear 109, d- ^as seated on the shaft 48, which is driven by a wheel mentioned in connection with FIG. The lower end of the pivot arm 102 is freely supported by the shaft 48 and is therefore not influenced by the rotational movement of this shaft. The lower end of the pivot arm 102 also carries cam rollers II3 and 114, which can follow the cam disk 108 and the guide vanes. The rollers or at least one of them are always in contact with the surface of their cam disk and are pressed against them by means of a spring or an air cylinder II6 which is connected to the swivel arm 102 via an articulation member.

To keep the toothed belt 106 taut when the Swivel arm moves oscillating back and forth, a belt tensioner 107 is provided, which is not by a Spring shown on the carrier 123 is actuated to the Belt tensioner, at the ends of which tensioning rollers 122 are mounted, to pivot. As can be seen from Fig. 3a, the runs Toothed belt 106 between the tensioning rollers 122, which on the

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- Act on the outside of the toothed belt.

The drive arrangement is also provided with regulating segments or wings 115 which are articulated at support points 121 on the cam disk 108. The insides of the regulating wings II5 run on an eccentric disk 119 ^ n ₁ which can be pivoted about the shaft 111, from which it can be uncoupled by means of an air cylinder 118, the actuating rod 129 of which engages the attachment point I30 of the eccentric disk 119.

By means of the drive arrangement according to FIG. 3, the movement of the molding tool required for folding the strip 5 is achieved 3 generated. The function of the drive arrangement is as follows: The shaft 48, which can also be the shaft for the former, rotates at constant speed around and thereby drives the wheel I09, which in turn is a smaller one Wheel 110 drives. The gear 110 rotates in bearings 112 supported shaft 111 with a speed that due to of the gear ratio between the wheels IO9 and 110 is six times greater than the speed of the shaft 48. the Pulley 127 rotates with shaft 111, and the toothed belt 106 transmits this orbital movement to the pulley 105, which in turn drives the shaft 104 and that on it seated molding tool 3 drives "

As described with reference to FIG. 4, the molding tool 3 has not only a rotary movement, but also an oscillating one Communicated to and fro movement, which is generated by means of the cam disk 108 seated on the shaft 111. How out As can be clearly seen in FIG. 3 a, the cam disk 108 has two symmetrically opposite parts, resulting in

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As a result, the pivot arm 102 makes two complete back and forth movements with each revolution of the cam disk 108. The cam disk 108 acts on the pivot arm 102 via the cam roller 113, which is pressed against the curved surface of the cam disk by means of the spring 116. When the cam disk 108 lifts the cam roller 113 as it rotates, the swivel arm 102 is moved in the same direction as the former k and synchronously with these - when the radius of the cam disks becomes smaller again after reaching its maximum, the spring 116 pushes the swivel arm 102 back thus producing its return motion. In order to prevent the movement of the swivel arm 102 from having an effect on the angular speed of the pulley 105 and consequently also on the angular speed of the shaft 104, and to avoid a change in the belt tension, the drive arrangement is provided with the belt tensioner 107. By means of the belt tensioner 107, on the one hand, the toothed belt 106 is held open with almost always the same belt tension regardless of the position of the swivel arm 102 and, on the other hand, prevents the movement of the swivel arm 102 from producing a rotary movement of the pulley 105 and consequently a change in the angular speed of the shaft 104, which should be kept constant.

As mentioned in the description of Fig. H , an adjustment of the feeding of the tape 5 with the aim of aligning an imprint on the fold formation can be produced by the fact that the pivot arm moves faster than the former 4 for a short period of time, the shaft 104 forward the tape a few millimeters past the upper end surface 70 el © ³ upright part 66 of the former h

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pulls. This additional “feed movement of the ¥ elle 104 is achieved by means of the regulating wing 115, which is on the cam disk 108 is articulated at the articulation points 121 is. The insides of the conical wings 115 are, as described, designed so that they come to an angle adjustable eccentric disk 119, the kinkel position is controlled by means of an air cylinder 118, the actuating rod 129 of which is at 130 on the eccentric disk 119 is hinged.

To see if there is an ornament or an imprint on it the tape is in the correct position with respect to the folds formed during molding, the tape 5 is with before provided with printed colored marks or indices, which can be detected by a photo cell device. In the present case it is assumed that a noticeably insufficient supply of the tape 5 by e.g. 0.1 mm for each Imprint is present, which means that the tape is 1 mm long after it has been advanced by a length corresponding to 10 imprints is out of alignment. The marks or indices are arranged on the tape so that the distance between two consecutive rakes the exact one Length of an imprint or several times this length. With the tape misalignment mentioned above a mark or index appears after a number of imprint lengths have been fed immediately in front of the photocell device, which feels the mark and sends an impulse through an electronic amplifier to a valve, which the air cylinder 118 supplies compressed air, which over the Actuating rod 129 rotates the eccentric II9 so that the larger radius parts of the eccentric disc

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be rotated against the cam roller 114 · When the When the cam disk 108 rotates, the wing flaps 115 become raised by the eccentric disk 119 so that parts 131 drive from them beyond the contours of the cam disk 108. The parts 131 of the vanes 115 that overlie the cam disc 108 come out due to the rotation of the cam in contact with the cam roller 114, the sits on the same shaft as the cam roller 113 and immediately next to it. The consequence of this is a short-term one Increase in the movement of the pivot arm 102, which is thus faster than the former 4 in a position of Moves shaft 104, in which this runs over the upper end surfaces 70 of the former 4. Because of this speed difference sliding occurs between the shaft 104 and the former 4, which the shaft. 104 the volume 5 between the shaft 104 and the upper end surface 70 of the former 4 can take away. The additional advance of the tape causes the marks to be moved on the tape 5 and at the next time the photocell device is monitored, no marks are detected / earthed, whereupon the valve closes the air cylinder 118 is switched off, the eccentric 119 in. Is returned to its original position, in which the regulating vanes 115 do not exceed the outer contour of the cam disk 108 when passing the cam roller 114 be moved out. After a feed has expired for a number of folds, new marks appear in front of the photocell device and a new additional feed movement is initiated to decorate the Adjust the tape to the feed.

II) feed drum

The feed drum 23 and its drive will now be described in detail with reference to FIGS. 5, 6 and 7.

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By means of the feed drum 23, the band 6 of packaging material is advanced, which is to be connected to the band of packaging material folded by means of the forming device 2 to form a series of interconnected, filled containers by the folded-down flaps of the band 6 in contact with the edges of the folded tape 5f and that the tapes 5 and 10 are permanently connected by sealing their contacting areas. In order to facilitate the folding down of the edge regions of the band 6, transverse slits 63 are provided therein, the length of which corresponds to the height of the folds of the folded band 5, while the distance between successive slits 63 corresponds to the distance between successive folds of the folded band 5.

In order to enable a connection of the band 6 with the band 5, while both belts are moving, belt 6 must be advanced synchronously with belt 5, and it is further it is imperative that the tape 6 is fed so that its slots 63 always overlap with the relative narrow folds of the tape 5 come to rest.

In FIGS. 5, 6 and 7, the feed drum is denoted by the reference numeral 23, and a vibrating plate for generating a reciprocating, oscillating rotary movement is denoted by the reference numeral 59. The processing stations on the oscillating plate 59 are designated as follows: a hollow punch with 212, 213 »a heating device with 203, an embossing tool with 208 and a cutting tool with 209.

Furthermore, an adjusting cone 256 is provided, which by means of a bellows 253 can be actuated via an ¥ elle 255 and

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cooperates with spring-loaded bumpers 257. the Bumpers 257 are connected to radially arranged connection plates 258, which in the surface area between adjacent Segments 202 of the feed drum 23 are arranged and can be raised or lowered.

The drive of the feed drum 23 and the oscillating plate 59 is done by means of a drive device which has a Itiemens washer 46, gears 2251, 226, 228, 229, 237 and 238 and a cam disk 231 and a cam roller 232 who sits on an arm 233. The drive device is arranged on a base plate 239, and partially housed within a housing 240 in which the vibrating plate 59 is movably arranged with respect to a sliding seal 241. The drive device further comprises a Guide track plate 242 with a curved guide track 243, in v / elcher cam rollers 244, 246 run, which in turn Act on the actuating arms which the machining stations drive.

The idle pulley 46 is driven via a toothed belt 45 from the drive wheel (not shown), which has already been described earlier, and via the ¥ elle 47 connected to the feed drum 23, which is driven directly from the pulley 46. The pulley 46 is integral with the gear wheel 225, which has a smaller gear wheel 22b , which sits on the same position as the gear wheel 228 (FIGS. 6 and 7). The had 228 drives a had 229 on which the cam and the gear 237 supporting i / elle 230. The gear 237 drives the gear 238, which runs freely on the shaft 47 and is integral with the plate 242, which the curved guideway 242 wearing.

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The supply ro turne 1 2.hj has twelve segment surfaces 202 in the embodiment described, which are of identical design and are arranged distributed around the circumference of the supply drum 23 at the same distance. Each segment surface 202 has milled recesses 223 "in which the packaging material is to be thermoformed". The outer parts 262 each have a hole 222 through which a hole can be punched out of the packaging material. Each segment 202 carries a part of the tape 6 of the size corresponding to one side of the finished package, and during the period _f in which the packaging material is in contact with the feed drum 23, operations are carried out on it, such as punching, closing the punched hole by means of a tear-off strip, embossing or hot forming, slitting the edge areas of the tape up to the central area 260.

Since the tools required to carry out the operations described are arranged on the vibrating plate 59 , the vibrating plate 12 has to carry out complete work cycles with one revolution of the feed drum 23. Since the movement of the tools is controlled by the guide track plate 242, the latter must also rotate at the same speed, so that it delivers a drive pulse to the tools during twelve complete work cycles during one rotation of the feed drum 23. The guide track plate 242 now has two equally curved sections offset by 180 relative to one another, so that the guide support plate only needs to revolve at six times the speed of the feed drum 23. The specified speed ratio is taken into account when dimensioning the drive and gear arrangement.

409831/0327

When the drive pulley 46 rotates, the Feed drum 23 driven at the same speed as the belt pulley 46, since the feed drum 23 »as mentioned, is firmly connected to the pulley 46 via the shaft 47.

The vibrating plate 59 is driven by a shaft 259 which is connected to an arm 233 via a spline. The arm 233 carries the cam roller 232. To hold the cam roller against the cam disk 231, the arm 233 of an air cylinder 234 with an operating rod 235 pressed against a lever 236 integral with the arm 233.

Since the vibrating plate must vibrate back and forth twelve times with one revolution of the feed drum, the cam disk must rotate at a speed that is twelve times greater than the speed of the shaft 47. This is done by means of the gears 225, 228 and 229 reached.

The track plate 242 is driven by the gear 237, which is seated on the same shaft as the cam plate 231. Since the guide track plate 242, as mentioned above, should rotate at half the speed of the cam disk 231, is the gear ratio between gears 237 and 237 238 one and two. The guideway plate 2'l2 also rotates in the opposite direction of rotation.

The cam roller 246 having the arm 247 is mounted on a bearing 263 that is rotatably disposed in the vibrating plate 59 _e The bearing 263 also carries a toothed segment 248 which can cooperate with a second toothed segment 249th In the same way, a bearing 264 is rotatably arranged in the oscillating plate 59 . The bearing 26h stands over a tooth

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coupling 250 in engagement with a likewise rotatable in The bearings 265 arranged on the vibrating plate. The bearings 264 and 265 carry shafts 220, 221 fixedly connected to them.

As can be seen from FIG. 5, the arms are 214 and 215 connected to shafts 220 and 221. The arm 214 carries a hollow punch 213 »which protrudes from the open inner end of the feed drum 23 into the feed drum, and the arm 215 carries a punching die 212

Since the cam roller 246 follows the curved guide path 243, the arm 247 is periodically pivoted so that the skins 220 and 221 and with them the arms 21 * i and 215, which the Punching tools 212 and 213 are pivoted. When the cam roller outwards in that part of the guideway 243 is forced, which has the largest diameter, the arms 214 and 215 are pivoted towards each other, and the punch 213 interacts with the punching die 212 and punches a hole in the tape 6. This hole represents a pouring opening in the finished package 212 is arranged outside and the punch 213 is arranged inside the feed drum 23, the feed drum 23 must an opening 222 in the actuating surface of the punch have (Fig. 6).

The shaft 266 connected to the bearing 263 carries an arm 267 * on which, on the one hand, a cutting device 219 and on the other hand a heated jaw 224 for sealing and concentric with the bearing 263 a feed roller 216 for the band 211 of masking strip material is arranged. the Feed roller cooperates with a counter pressure roller 218. The liollen 216 and 218 can be one with letters or with

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have a surface provided with a friction lining to ensure the clock function and the roller 216 can rotate with its roller in one direction of rotation, while it is disengaged in the other direction of rotation Freewheel clutch is arranged, is driven by the movement of the oscillating plate 59 either via a linkage, not shown, which is attached to the machine housing, or by means of a remote segment attached to the machine housing, which meshes with a gearwheel which sits on the drive shaft of the pulley 216 »The band 211 for the peel-off strips is guided into the guide channel 217 between the hollows 216 and 218 and to the cutting device 219, which has a firmly held cutting edge and a cutting edge arranged on a tension spring, with which a cut can be made across the front end of the tape.

In the embodiment shown, the heating device 203 takes up three segments 202 of the feed drum 23 and comprises a hollow body with holes or slits which are directed towards the feed drum 23. Hot air can flow through these holes in order to heat the strip guided over the feed drum 23 either uniformly or in a predetermined pattern which can be generated by the arrangement of the holes or slots. The heating device 203 is attached to the oscillating plate 59 by means of a holder 206 and follows its movement. Air is fed to the heating device 203 via a feed line. The supply line 204 is connected to a fan (not shown). The air flow generated by this is guided past a heating element 205 before it reaches the hollow body of the heating device and blows against the belt 6.

409831/0327

The embossing device 208 comprises a printing plate with a relief-like pattern, which is similar to those previously described Pattern of the recesses 223 in the outer segment plates 261 and 262 of the feed drum is adapted. Furthermore, the embossing device comprises a knife 209 by means of which the tape can be slit in the manner described can. The embossing device 20b is arranged on an arm 210 which is actuated by means of the heads 207. This is connected to an arm 245 in the manner shown in FIG. 7, to which the cam roller 244 is attached. The cam roller 244 rides in the curved track 243, and there these two has identical parts arranged opposite one another, the roll runs out at the same time as the roll 246 the part with the smaller radius in the part with the larger iladius of the curved raceway, When the cam roller is in the part of the curved track with the larger radius, the arm 245 experiences a fin movement, which to a rotation of the heads 207, which in turn produces an angular movement of the arm 210, which thereupon the embossing tool connected to it presses against one of the segments 202 of the feed drum 23 and thereby the heated Band 6 carries and cuts the edge areas of the band 6 by means of the knife 209 “If the band 6 is made of packaging material with a uniform feed rate of the Feed drum 23 is moved further, the following work cycles take place:

It is assumed that the oscillating plate 59 has reached its end position and is moving in the same direction and starts synchronously with the feed drum 23. The cam rollers 244 and 246 run in those at this stage Section of the guide track 243 of the plate 242, which

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has a smaller radius. Immediately after the oscillating plate 59 begins to move synchronously with the feed drum 23, the curved guide track has reached a position in which the cam rollers 244 and 246 run into the section with the larger radius of the guide track 243. This means that the arms 245 and 247 must make a pivoting movement. Due to the pivoting movement of the arm 247, the arms 214 and 215 are moved towards each other, so that the punch 213 interacts with the punching die 212 and punches a hole in the band section arranged in between, the punched-out packaging material corresponding to the hole area being incurred as inevitable waste.

At the same time as the punching process, a previously punched hole is made in a section of tape that has already been advanced covered with a tear strip, namely by means of an application device which is arranged on the adjacent segment 202 of the feed drum 23. The tear-off strip is applied in such a way that part of the tape 211 made of tear-off strip material, e.g. homogeneous polystyrene and is fed by means of a feed wheel 216, with the aid of the heated jaw 224, which via the arm 247 is actuated by the shaft 266, which in turn is controlled by the guide track 243, into the belt 6 in the area of the punched hole is pressed, the tear strip with the surface layer of the tape along a closed sealing seam around the hole in the tape is heat sealed. Simultaneously with the upward swiveling of the heated jaw 224, the cutting edge 219 is pressed down and hits the fixed cutting edge 2191 in one piece with the arm 264 ^ st, the band 211 being cut and its leading portion is severed from the tape.

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A few drum segments 202 further in the direction of movement of the feed drum 23, the belt 6 is heated by means of the heating device 203. As a result, the band 6 is prepared for the embossing, which still takes place a few drum segments further and is caused by the embossing tool 208 being pressed against the heated band, on which it creates a relief-like pattern that corresponds to the pattern 223 in the outer parts 261 and 262 of the drum 23 and in the embossing plate of the embossing tool. At the same time, when the embossing tool 208 is pressed against the band 6 by means of the arm 210 controlled by the shaft 207, the inland zones of the band 6 are slit by means of the knife 209 in the manner described. All the work processes described are carried out simultaneously, with the swinging plate 59 following the feed drum 23 in synchronous movement, when the swinging plate 59 reaches its next reversal point, the cam rollers 244 and 246 are again transferred to that part of the curved guide track 243 with a smaller radius. As a result, the arms 210, 267, 214 and 215 are raised and moved away, so that the oscillating plate 59 can be quickly returned to its original position, whereupon a new working cycle begins.

The embossing tool 208 can, in addition to the aforementioned projections and recesses, which have a corresponding relief pattern shape in the heated strip, have nozzles for compressed air or vacuum suction spaces, which contribute to the shaping can. Such a vacuum suction space or a nozzle for Compressed air may be located below the punched hole, around the portion located above the hole of the peel-off strip down into the hole, which is then also heated by means of the heating device 203 and is softened.

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It is important that the belt 6 be conveyed synchronously and in alignment with the belt 5 because any ornament on the belt 6 must be positioned in relation to the drum so that it always appears correctly on the surface of a segment 202 of the drum lies. This control of the tape feed can be done, which are radially movably disposed in the drum 23 and is connected to the bumpers 257 by means of mobile terminal plates 258, at the surface of the cone 256 abut _a The cone 256 is a shaft 255 having a bellows or an air cylinder 253 connected, which can be fed with compressed air via a control valve (not shown).

The setting is made in such a way that the position of the belt 6 with respect to the feed drum 23 by means of a photocell device or by means of a mechanical one Device can be scanned »When the scan indicates that the tape position is within a given tolerance range is correct nothing happens. However, if the scan indicates that the tape 6 is not correctly on the Feed drum 23 is aligned, and the tolerance limits are exceeded, a pulse is sent to a valve device released, which the air supply to the BaIs or the air cylinder 253 turns on. As a result, the shaft 255 is pushed forward and the cone 256 in FIG. 6 afterwards left.moves. This will make the bumpers 257 »the in the same circumferential distances around the circumference of the cone 25 ^ arranged are, pressed outwards and thereby press the connection plates 258 a little outwards, whereby the circumference the feed drum 23 is enlarged a little so that more material is fed and the ornament on the belt 6 is brought back into the tolerance limits.

409831/0327

III) Forming, filling and sealing the packaging containers

As already described, the packaging containers are produced by folding a first band 5 of packaging material by bringing it into contact with the formers h , while a second band 6 of packaging material is combined with the first band 5 and hollow bodies are closed by sealing adjacent areas of the two bands are formed. The joining and sealing of the bands 5 and 6 takes place by means of devices which are arranged on the carrier 13 which can be moved to and fro and which is supported in a stationary bearing 14.

In Fig. 10 is an overall view partially in cross section of the carrier 13 shown, the folding device 16 and the Sealing device 17 carries.

The carrier 13 can be moved back and forth by means of an arm 301 and an air cylinder 300, the forward movement being in the same direction and synchronous with that of the former h , while the return movement is significantly faster. The carrier 13 carries by means of a support arm 3 ^ 0 the heating device 15 »which is fed with air via a stationary pipe 22 which opens telescopically into a pipe assigned to the heating device, which moves together with the carrier or with the heating device 15 by means of a flexible one Line is coupled. The goods to be filled into the packaging container are supplied via the filling pipe 19 which runs directly over the upper end surfaces of the upright parts of the former h . In the embodiment shown

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the filling pipe 19 has a long and narrow flattened one Cross-section and is preferably made of plastic. In order to save cleaning work, the filling tube can be exchanged and be attached to the filling assembly with a coupling device 355. The filling material is via the Line 20 supplied. The amount to be fed to the filling pipe 19 is regulated by means of the regulating device 21 controlled valve 356 controlled.

The folding device 16 comprises folding wings 333, which over the Folding axis 307 can be actuated, which at one end is connected to a swivel arm 3O4. The sealing device 17 includes the sealing heads or sealing heads 317i are connected to ultrasonic generators, which are actuated by means of the rotating shaft 308, which in the hollow support 13 is received and in its own cavity the rotating shaft 307 receives. The shaft 308 is actuated by means of the arm 303 which sits at one end of the shaft.

In Fig. 10, a Uchneidvorrichtung can be seen, the one centrally supported pivoting plate 312, which is movable with the Trägez "13 and carries cutting blades and a resilient arm 310, which via a cam disk 311 is actuated by means of a swivel arm 3 ^ 1 with a Pressure roller 309 is connected.

In the following, the folding device 16, the Sealing device I7 and the cutting device 18 together with their function described with reference to Figures 8, 9 and 11, which the actuating device for the carrier I3 and the show mentioned devices.

409831/032 7

In Fig. 8, the previously briefly described folding device 1ό is shown, which comprises a housing attached to the carrier 12, in which two ¥ ellen 357 are mounted on each side of the housing. Folding wings are fastened to the bells 357 in that an actuating arm 328 for each folding wing is firmly connected to one of the shafts 357, while it runs freely with respect to the other shaft. Each shaft 357 has a pivot arm 332 which is connected to an actuating rod 331. The actuating rods 331 are pivotably arranged on arms 33Ο attached to the shaft 3Ο7, so that a rotation of the shaft 307 produces a displacement of the rods 331, which in turn causes an angular movement of the pivot arms 332 and thereby rotation of the shafts 357. As a result, the folding wings 333 with their pressure plates 339 are pivoted either upwards apart or downwards against one another (FIG. 8). The shaft 307 is actuated by the drive device shown in FIG. 11, the shaft 49 of which is driven by the gear wheel 41. A guide track 399, which is fixedly arranged on the shaft 49, can interact with a cam roller 351 which is fastened to an arm 35 'which is rotatable about a pin 352. At the end of the arm 35Ο an actuating rod 354 is attached via a ball joint 353, which is connected via a further ball joint 306 to the pivot arm 304, which is rigidly coupled to the chain.

From Fig. 8 it can be seen how the band 6 provided with slots 63 by means of a guide device 335 over the heating device 15 is guided. This has on its upper side holes or slots 336, which in a certain patterns corresponding to the zones of the tabs 64

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are arranged to be heated for sealing or sealing. As described, the carrier 13 moves with its associated heating element 15 synchronously with the formers 4 and with the belt 6. This movement is controlled so that the tabs 64 come to lie above the heating device 15 so that the hole pattern of the holes 336 the inland zones the tabs 64 covered. The machine shown is designed so that the devices carried by the carrier 13 carry out operations on two packages at the same time. The heating device 15 therefore assumes a width which corresponds to the width of two tabs 64 and also has two complete hole patterns with holes' Jj6 . The erection of the folding wings 333 is so large that two flaps 64 can be folded at the same time and come into contact with the band 5 over a surface area which corresponds to two formers 4. Finally, there are two sealing heads or sealing heads 317 (FIG. 9) intended for the simultaneous sealing of two packaging containers

8 also shows pressure rollers 33 &, which are arranged on the folding wings 333 and can interact with a stationary cam 337. With the help of this cam, the tabs 64 of the belt 6 are filtered down and held pressed with great force by the pressure plates J39 of the folding wings 333 as long as the sleeve 31/8 rolls along the cam 337.

In Fig. 9 is the sealing device or sealing device shown in the embodiment shown works with ultrasound, but can also work according to a pressure or high-frequency heat sealing process. The sealing device 17 comprises two ultrasound-üclrwingkörper 318, which via the electrical lines 319 with

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Energy can be supplied. The ultrasonic oscillating bodies 318 pivot in a yoke 320 which is hingedly suspended from a base 325 which is connected to the carrier 13. The sealing device 17 further comprises two sealing heads or sealing heads 317 'which, together with the ultrasonic oscillating bodies 318, are movable between a first position in which the areas of the bands 5 and 5 to be welded against the upper end surfaces of two adjacent formers and the areas in between are located 6 are pressed, and a second position in which the sealing heads are in the raised position. The sealing or sealing heads 317 are actuated by means of an actuating arm which protrudes through an opening (not shown) in the base 325 and is connected to the hollow shaft 308, which is connected at one end to a pivot arm 303 according to FIG Ball joint is coupled to an actuating rod 358, which in turn is articulated via a ball joint 359 with an arm 36O, which carries a cam roller, not shown, which can run in the curved track 3 ^ 8 _o The arm 36O is on the machine housing in the same way as hinged to the x ^ rm 35O. The rod 358 is coupled to the arm 36O via an eccentrically supported pivot plate 362 and a spring 36I. The swivel plate 362 and the spring J61, which in the present case is formed by an air cylinder with an easily adjustable pressure, have the task of enabling the setting of the sealing or sealing pressure and of absorbing any excessive movement of the cam disk 3 ^ 8. In order to hold down the binding surfaces of the packaging container during the sealing or oiegolung process, pressure rollers 315 are provided which are actuated by the air cylinder 316 via dev. Arm 32 'can be operated

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The filled and sealed packaging containers v / ground separated by means of the cutting device 18 (Fig. 10) having a cutting tip 312 having cutting edges' J lh (Fig. 9) which is pivotally mounted on a central shaft 313 with a support 326, which is attached to the carrier 13. The cutting device also comprises a pressure roller 309, the axis j 27 of which (FIG. 9) is mounted in an arm 3 * M (FIG. 10). The Arn 3 ^ 1 is connected to a Federai-ni 3IO (Fig. 10, 11), at the end of which a squat roller 3 ^ 2 is arranged, which is controlled by the cam disk 311. The cam disk 'jii is in such a way connected to the drive of the carrier 13. synchronized, that the cam roller 3 ^ 2 is raised during the rapid return movement of the carrier, while it is in its lower position during the synchronous movement of the carrier 13 with the dander 5 and 6. The pressure roller 309 is also raised during the return movement of the carrier 13 and is pressed down against the cutting plate 312 ^{during the synchronous movement of the carrier 13 with the bands 5 and 6.}

The cutting process takes place in such a way that the Pressure roller 309, which during the return movement of the carrier 13 is moved away, is lowered when the synchronous Movement of the carrier with belts 5 and 6 begins. the Pressure roller 309 then runs against the front edge of the insert 312 and presses the cutting edge 31 ^, which in Direction of movement is seen in front, against the sealing point between the bands 5 and 6, which in the preceding Work step has been created in order to separate a packaging container by means of a cut through the sealing zones. The Holle 3Ο9 rolls on over the plate 312,

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which thereby swings a little over the shaft 313 and tips over, so that the rear cutting edge 314 is pressed against the following sealing zone, whereby a further packaging container 30 is separated.

To drive the carrier 13, it is articulated to an arm 301 which is seated on a shaft 346 which is connected to another arm 3 ^ 5 which has a cam roller jhh which runs against a cam disk 343 and is guided by it. So that the roller 344 is always kept in contact with the cam disk 343, the carrier 13 or the arm 301 is subjected to a constant pressure which is derived from the air cylinder 300 (FIG. 10). When the carrier 13 moves synchronously with the advance of the belts 5 and 6, that is, in an oblique downward direction (see also FIG. 1), this happens against the spring force in the air cylinder 300, the air content of which is compressed. The movement is controlled by the cam disk 343 driven by the shaft 49, the convex section of the cam track being designed in such a way that the movement is synchronous with that of the formers 4 and thus of the belts 5 and 6 When the cam disk 343 runs, in which the convex part of the cam disk merges into the concave part, the cam roller 3 ^ is kept pressed against the cam disk by the air cylinder 300, which presses against the carrier 13 and the arm 301. As can be seen from FIG. 11, the concave part of the cam disk is considerably steeper than the convex part and also forms a considerably smaller angle with respect to the center of the cam disk 343. This means that the carrier 13 controlled by the cam plate 343 has a

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makes relatively quick upstroke, which is controlled by the concave part of the cam and is generated by the air cylinder 300, which pushes the carrier 13 quickly upwards. When the cam roller 3 ^ 4 has reached the bottom of the cam disk, i.e. that part of the cam track with the smallest radius, a further upward movement of the carrier 13 is prevented and instead a downward movement synchronously with the belts 5 and 6 due to the increasing radius of the cam disk 3 ^ 3 initiated, wherein the cam roller 'Jhk is pushed outwards and produces a rotation of the ¥ elle 3k6 and an angular movement of the arm 301, which is hinged to the carrier. So that the carrier 13 cannot pivot during its upward and downward movement, it is guided in the axial direction through two lobes 36 ^r J.

The forming, filling and sealing or sealing of the "packaging" proceeds as follows: The band 5, which is folded into U-shaped sections with the aid of the forming device 3, is in surface contact with the formers h, which are connected to one another to form an endless chain which is connected to After passing through the feed drum 23, the tape 6 is fed to the upper end faces of the formers h so that the tape 6 comes into contact with the tape 5. Between the tapes 5 and 6 is arranged the flat filling pipe 19 which is in communication via a control valve 356 with a tank containing the filling material, for example milk, water, wine or the like.

It is assumed that the carrier has just reached its upper reversal point, that is, its return movement

A09831 / 0327

has ended and its synchronous movement with belts 5 and 6 begins. At this point in time, hot air from the heating device 15 assigned to the carrier 13 flows through the holes yj> 6 (FIG. 8) on the one hand against the underside of the tabs 6k of the band 6, which is in contact with the upper side of the heating device 15, and on the other hand against blown the edge zones of the belt 5, which protrude slightly from the shapes k. Due to the arrangement of the holes 336, the hot air blown out is concentrated on those areas of the strips 5 and 6, the surface of which is made of thermoplastic material to be brought to the sealing temperature. The heating lasts over the entire period of movement of the carrier 13 until the end of its forward movement or the beginning of its. Backward movement.

At the same time as the heating, the flaps or tabs 6k of the band 6, which were heated in the previous operation, are placed against the slightly protruding and equally heated .uand areas of the folded band 5 by means of the folding wings 3'J'j whereby those areas of the bands 5 and 6 which are heated to the sealing structure are brought into contact with one another in order to produce a tight and mechanically permanent seal between the areas of the bands 5 and 6 which are in contact with one another. After the tabs of oxide tape 6 have been sealed to the side edges of tape 5, a series of interconnected, tight "pockets" is formed, the individual pockets being connected to one another through not yet sealed slots which are located between the upper ends of the tape 5 and the middle area of the belt 6 are present. Through these slots da.s filling pipe 19 runs through, which immediately

Ä09831 / 0327

_ Li

ends in front of the sealing device 17. The filling material is now filled in via the filling pipe 19 so that the pockets are filled with the material, but the level of the content must not rise so high that the filling material penetrates into the as yet unsealed parts of the band 5 and to the folding wings 333 can penetrate ₀

Simultaneously with the heating of the sealing surfaces of the band and 6, the folding down of the already heated flaps 64 by means of the folding wings 333, the final sealing or sealing of the filled pockets is carried out by the sealing heads 317 (Fig. 9) against the upper end surfaces of the former 4 is pressed, the carrier 13 begins its downward movement synchronously with the formers 4. As already mentioned, this takes place in that the shaft 308 is rotated by means of the arm 36O guided through the curved guide track 3 ^ -8, whereby the rod 358 acts via the pivot arm / on the shaft 308. When the sealing heads 317 are pressed against the bands 5 and 6 and these press against one another in the region of the upper end faces of the former 4, the ultrasonic oscillating bodies 318 are actuated, which generate the ultrasonic energy required for sealing or sealing. The separation of the individual packages 30 takes place during the downward movement of the carrier 13 in that the roller 309 runs in the manner described over the cutting plate 312 and thus presses the pivotable cutting edge 314 of the cutting plate 312 against the sealing area obtained in the previous operation, so that a Section through both bands 5 and 6 is carried out in the sealed area.

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All the operations described are carried out simultaneously on different parts along the belts 5 and 6, wherein the carrier 13 moves a stroke which is slightly smaller than the length of two packages · Am At the end of the working cycle, the folding wings 333 are again folded outwards and upwards, the sealing heads 317 and the roller 309 is raised, whereupon the carrier 13 with the help of the air cylinder 300 and controlled by the cam 3 ^ 3 makes a quick return movement upwards, so that a new work cycle can begin. Since it is important that the folding wings 333, the sealing heads 317 and the Cutting edges 314 correct with respect to the moving Former 4 are aligned, and since the operations described are carried out simultaneously on two packaging containers are to be, the movement of the carrier 13 must be such be that the length of time for a complete working cycle including the return movement is exactly that of the Further conveying the former by two packaging container lengths corresponds to the time required.

In the embodiment shown, it has been assumed that the packaging containers 30 have a parallelepiped shape. However, the shape of the packaging container can be changed within wide limits. For example, the formers 4 can have inverted T-shaped links instead of L-shaped links, and the links can be designed so that the U-shaped fold portions have a round, semicircular bottom instead of a flat bottom. The folded strip 5 then obtains a cross-section having U-shaped sections with rounded bottom, that is, \ SUUU ~ lJ] J [j · ^r De strip 6 must also be modified slightly in this case. Instead of simple slots

409831/0327

in the edge areas of the strip 6 material is in punched out a curved cut so that the flaps formed thereby have a rounded free end, that for the rounded bottom of the band 5 fits. The packaging containers thus obtained have a rounded side that is cup-shaped in appearance creates.

Claims

409831/0327

Claims (26)

Claims Θ Masculine for the manufacture of packaging containers, with a device for forming a series of interconnected U-shaped sections by folding a continuous first band of foldable material, a device for applying the first sand to a second band of foldable material, a device for unfolding the xiand areas of the second band against the overlying edges of the first folded band, a device for sealing the adjacent areas of the two bands along their contact surfaces for producing cavities in the form of parallelepipeds and a device for filling these cavities with filling material, characterized in that the device For folding the first Bincles (5) comprises former (4), the first band is formed on Mielchen so that several such formers are arranged and movable one behind the other in Vocrschubriclitung the first country and that the device for applying the: second band (6 ) to the ex'Ste Belt (5) has a feed tube (23), which is not connected to the second belt (6) with a pathway; the former (■ ') divides synchronous feed movement. 2. Machine according to claim 1, characterized in that the former (Ji) sum folds de3 first band (5) arranged in vain endless Lieilie one behind the other and can be moved at constant speed, and that one with a ',. ^r clle (iO't) rotatable jporr-iwerkzeug (3) with one or more jekrüniaten Forofläciien (12 ^ t, 125) is provided, which presses the first Eatid (5) into the Foirnier (4) to the tape in contact to bring with the ^T ./ändon of the former and d? .durcli to bring the tape in oitie shape according to the contours of the surfaces of the former. - 47 - 409831/0327 3 · Machine according to claim 2, characterized in that the molding tool ('J) has oppositely equally curved molding surfaces (124) which are arranged on diametrically opposite slides with respect to each (104), 4. Machine according to claim 2, characterized in that the! / Rush (1O4) of the mold (3) in a back and forth movable pivot arm (102) is supported. 5 · Machine according to claim 4, characterized in that the pivot arm (102) is driven by a cam disk (108). 6. Machine according to claim 5 »characterized in that the cam disk (108) from the circumference of the cam disk has pivotable lips or wings (115), by means of which the cam effect can be changed in this way can that the speed of the pivot arm (102) temporarily to the speed of the former (4) exceeding Vert can be increased, as a result of which an excessive amount of tape material of the first tape is temporarily advanced is to that the position of the lips or wings is controlled by controls, the control marks on the Feel tape (5) which are spaced apart which correspond to a full length of an ornament or several full lengths of ornaments. 7. Machine according to claim 2, characterized in that the former (4) form a series of spaces arranged one behind the other with an approximately U-shaped cross-section, each space being delimited by a bottom (67) and two associated side walls (66) . - 48 - 409831/0327 8. Machine according to claim 2 or 7 »characterized in that that the formers (4) are formed by a series of equally sized, L-shaped members which are connected to one another connected by an endless chain. 9 · Machine according to claim 8, characterized in that the L-shaped members are provided with guide rollers that run in a guide track which is designed so that the protruding parts of the L-shaped members are always aligned in a plane perpendicular to the direction of transport are, 10. Machine according to claim 7 »characterized in that the shaft (104) of the molding tool (3) the first belt (5) in contact with the upper surfaces (17) of the protruding parts (66) of the L-shaped former (4) brings and rolls over the end faces (70), while the curved mold surfaces (124) of the molding tool (3) bring the first band into contact with the entire upper side of the base in a largely non-sliding, rolling-like movement with respect to the base (67) is formed by the horizontal leg of the relevant L-shaped member. 11. Machine according to claim 10, characterized in that the shaft (104) clamps the first band (5) between itself and the end surfaces (70) of the protruding parts (66) of the former (4) and maintains this clamping until one of the curved mold surfaces (124) pulls the first band (5) down into the adjacent, U-shaped mold space and presses it into a corner area (69) of this cavity. 409831/0327 - k-9 - 12. Machine according to claims h or 7 »characterized in that the pivot arm (102) of the mold (3) against the direction of movement of the former (k) can pivot at the time when one of the curved mold surfaces (12k) of the mold over one of the Rolls off bottoms (67) of the gaps and thereby brings the belt (5) into contact with the relevant bottom, and that the swivel arm is brought into such a position that the shaft (104) of the molding tool (3) supported in it the belt ( 5) brings into contact with the Obex ^ side (70) of an upright part (66) of the former (h) before or while this curved forming surface (1 24) has reached the end phase of its l / älzbewegung and out of contact with the band to be formed comes. 13. Machine according to claim 2, characterized in that the rear edge of the molding tool (3) seen in the direction of rotation is designed as a curved surface (125) which, due to a rolling movement, pushes the first band (5) against the inside of the rear, upright molding surface ( 66) in U-shaped iiaura presses. 14. Machine according to one of the preceding claims, characterized in that the feed drum (23) has a number of uniform segments (202) on v / eist, which are arranged at the same distance along the surface of the drum and one the distance between the formers * ( ^l i) have a corresponding width and each have a central section, the length of which corresponds approximately to the length of the former and outer sections, the length of which corresponds to the height of the formula. 409831/0327 15 «Lias chine according to claim 1h, characterized in that the Liegmente (202) have tracks or recesses. 16. Machine according to claim 14 or 15 characterized by a component arranged leoaxially with the feed tube (23) (59) »clas perform an oscillating rotary motion can, wherein the forward rotation takes place in synchronism with that of the feed drum, while the reverse rotation takes place is directed faster and opposite to the direction of rotation of the feed drum. 17 · lips chine according to claim 16, characterized in that the component (59) carries tools by means of which operations can be carried out on the second belt (6) which is conveyed through the feed drum (23), 18. Machine according to claim 17 _f, characterized in that one of the tools is designed as a cutting tool (209), by means of which the Aand zones of the second belt (6) can be cut or slotted in lines running transversely to the longitudinal direction of the sand, and in a length that corresponds approximately to the height of dec * rorraer (h) or slightly exceeds this. 19 · machine neich one of claims 1 to 18 h, characterized in that the feed drum daf3 having radially projecting parts (258) between the üegnenten (202) are arranged and can be adjusted in their position in order to adjust the scope of the feed drums and thus the Increase or decrease the length of the second dand (6) see below. 409831/0327 20. Machine according to claim 19 »characterized in that that the radially projecting parts (258) by means of a Cone (256) are adjustable, which is arranged within the feed drum (23) and in its axial direction is movable, whereby its conical peripheral surface elements connected to the radially projecting parts (25S) (257) acts, which are also arranged within the feed drum and with the conical peripheral surface of the Cone are in contact. 21. Machine according to one of the preceding claims, characterized in that the feed drum (23) and the component (59) are driven by a drive device which also drives a curved guide track (253) which guides the cam rollers (2kk, 2h6) which are connected to arms supported on the component (59) for operating the tools. 22. Machine according to claim 21, characterized in that the curved guideway (2 ^ 3) with a speed revolves which is n / 2 times the speed of the feed drum (23), where η denotes the number of segments (202) of the feed drum. 23. Machine according to one of claims 16 to 22, characterized characterized in that the component (59) is a heating device (203) for heating the second strip (6) running around the feed drum (23), a punching device (212, 213) for punching holes from the second strip, a thermoforming or embossing device (208) for thermoforming of the second belt and a device (219, 22 ^) Applying a tear-off strip over the punched out Includes holes " - 52 - 4 09831/0327 24. Machine according to one of the preceding claims, with a device for folding down the side flaps of the second band, which are formed by slitting the edge zones of the second band so that they are attached to the Lateral edges of the first folded band rest, characterized in that the device folding wings (333) which is brought into the open and closed position and axially by means of a carrier (13) are movable, which is arranged parallel to the movement path of the former (4), which the device (16) with the folding wings (333) in the closed position in the direction of movement of the former (4) at one of their speed and the speed corresponding to the feed speed of the second tape (6) is movable and can be moved back with the folding wings open at a much higher speed. 25 · Machine according to claim 24, characterized by a Heating device (15) made of a hollow body attached to a hot air source (22) is connected and with a Number of small holes or slits arranged in a row is provided, through which hot air is blown can be, the holes and slots in one of the edge areas of the slotted tabs (64) of the second Ribbon (6) corresponding pattern are arranged 26. Machine according to claim 24 or 251, characterized in that that the heating device (15) together with the device (16) for folding down the slotted flaps (64) of the second belt (6) is movable and that the second belt is guided in its feed movement in such a way that the Tabs (64) separating slots (63) in the second band straight with the holes or slots of the heater in Overlap come * - 53 - 409831/0327 27 · Machine according to one of the preceding claims, with a transport device for filled and closed Containers that are delivered from the molds to an endless, chain-like conveyor device with receiving spaces are characterized by an endless belt (28) that runs between two guide rollers and a drive wheel (27), which is arranged between sections of the belt at a point between the guide rollers (29) and has fingers protruding from it, which form spaces for receiving the container (30) » 28 · Machine according to claim 27 »characterized in that that the endless belt (28) comprises a number of narrow bands or strips which are parallel to one another are arranged and run between the fingers of the drive wheel (27) » 409831/0327 SV Blank page