DE2154268A1 - Device and method for packaging objects - Google Patents

Description

WR Grace & Co. (Prio h. November 1970 -

G.B. 52465/70 - 8688) 3j Hanover Square

New York, NY / V.St.A. Hamburg, October 29, 1971

Device and method for packaging objects

The invention relates to an apparatus and a method for packaging objects and preferably for Vacuum packaging of ham.

When packing objects, for example ham, the procedure has already been to put the object in the Inside of a heat-shrinkable thermoplastic bag Bringing material and then shrinking the bag so that it closed tightly around the object. In many cases it does the kind of the item to be packaged is required to evacuate the inside of the bag before the heat is used to shrink the Bag is applied, whereby then the space occupied by the finished package is a minimum. For this were such vacuum packaging by attaching a metal clip

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excess plastic material closed around the collapsed neck of the bag or by heat sealing the bag opening can be removed from the bag by cutting.

When automating such a packaging process, there is, inter alia, the problem that objects of arbitrary size appear very frequently. For example, cooked hams are generally pressed into shapes that are oval in cross-section, and each shape is used to package hams of a range of sizes or weights. The different sizes of the hams, when pressed together in the mold, result in articles of different thickness, although the mold ensures that the length and width for all finished hams are constant and within the size range of the mold. Thus, when packing cooked ham, there are different sizes and, moreover, different ratios of W height to length or width, the length and the width being measured along the largest and the smallest axis of an oval section through the ham.

The invention relates to a device for packaging objects in bags with a bag filling station and a device for feeding objects of arbitrary size to the filling station and

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is characterized by one of at least two size dimensions classifying device for the determination of the bag size based on the simultaneous estimation of the two dimensions. Preferably, the articles can be moved to the filling station along a single path and the classifier may include an indicator that tells the operator the size of the to be enclosed of the item required. It is also possible to provide a plurality of lanes, all of which form a bag filling unit which is part of a variety of bag filling units that use bags of different sizes. the Classifying device guides the object along the appropriate path according to its size.

In a preferred exemplary embodiment of the invention, the classification device uses a determination device for determination the width and the height of the item to be packed, and the bag is based on the sum of certain width and Height chosen. In such a device, the summing process can be performed by a motion-responsive electrical device be performed. The determination device can expediently contain a mechanical scanning plate which is between a retracted position and an article-lifting position

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is movable, and it may have a trigger device which the scanning plate from its retracted position in contact brings with an object. The trigger device can work with a photocell that is aligned with a light source is arranged, which generates a light beam which is interrupted by the object approaching the determination device will.

Another difficulty in packing ham or other Objects of the appropriate shape consists in the fact that the hams have an outer layer of fat that is easily damaged can.

It is therefore necessary that the bag filling station be very careful is designed so that the bags can be drawn over the ham without too much fat rubbing off the sides of the ham will.

The invention thus also relates to a device for packaging objects in bags with a bag filling station that has a Bag filling chute which contains a plurality of guide elements which can be moved relative to one another for holding the bag open effective during the movement of the object along the chute

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will. It also contains a drive device for moving the guide elements between a bag receiving position and a Bag spread position in which the guide elements are further apart and a non-narrowing guide for the object form. A classification unit controls the spacing of the depending on the dimensions of the item to be packaged Guide elements in the spread position. Preferably, the guide elements are arranged so that they are always in a substantially parallel position and form a non-narrowing guide.

When viewed from the front, the cooked hams have a shape after molding Rectangular shape, even if they are along a conveyor belt with the oval surface parallel to this and parallel to the longitudinal axis be moved to the conveying direction. Appropriately, the Führelercente are adjusted so that they the corners of the rectangular Form passageway so that the edges of the object, such as the ham, against damage when introduced into the bag are protected.

So far, objects have been vacuum-packed with sealing the plastic bag by means of clamps so that the object is introduced into the bag, the upper part of the bag is wrapped around a nozzle and the bag is evacuated through this nozzle and then the

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summarized part of the bag closed with a clamp vmrde so that a seal was achieved. A disadvantage of this process is that during the evacuation process atmospheric pressure acts on the pouch and presses the pouch firmly against the surface of parts of the object, what-to leads that bag parts that are far removed from the summarized and subsequently closed by a clamp end, include airy areas.

According to a further proposal according to the invention, a vacuum packaging chamber, means for introducing a filled but not collapsed bag into the chamber and means for gathering the bag neck together in the chamber and fastening means for the gathered bag neck intended. This makes it possible both to combine and to close the neck of the bag within a vacuum chamber and thereby avoid the risk of air inclusions. The evacuation is preferably carried out without introducing a The nozzle is carried out into the bag, and the process is completely automatic. If necessary, the fastening device a stapling device included; however, it preferably has an elongated slot for enclosing the neck of the bag and a pair of stops on which between a position on the respective

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End of the slot and a closed position close to one another in the middle of the slot can be moved, so that the bag neck can be summarized before bracketing. In a particularly advantageous embodiment, the stops contain opposite one another Clip receiving slots which, in the closed position of the stops, form a clip guide through which the clip can be moved during the closing process, so that it pulls the combined bag neck during the closing process.

The invention also relates to a method for vacuum packaging, in which a filled but not combined bag is brought into a chamber and evacuated in this, in which then the neck of the bag is grasped tightly and finally a clamp is fastened around the pooled neck of the bag. If necessary, the neck of the bag can be partially combined in the chamber before evacuation if only the complete summary is not done before the evacuation in the chamber, thus the possibility of air pockets as a result of insufficient outlet cross-sections for the air through the partially collapsed neck of the bag is avoided.

If a clip is placed around a filled pouch, it should, if possible, be in a symmetrical position with respect to the position

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of the object. It is therefore desirable for a ham that the clip is attached at a point which is on the major axis of the central oval section through the Ham lies.

The invention also relates to a packaging device with a clamping station, a conveyor for supplying a bag to the clamping station, a clamping device ₃ which lies essentially in the plane of the conveyor, and a receiving table for holding the bag during the clamping process, which is between a raised Aufnahrr. position for the object and a lowered bag closing position is movable. If necessary, a device for adjusting the locking device of the table can be provided so that an adaptation to changing heights of the objects is possible. If such a setting is not provided, the position of the center plane can be adjusted. The closing station is conveniently located in a vacuum chamber, and the clampering device forms a part with a bag closing device. In this case, the bag closing device can become closed .menfaPeinrichtung located essentially in the plane of a conveying surface -?:, which conveys the bag rn · ¹ closing station.

"Ö 9 8 2 Q / (J ti Ii J ^ ⁰ ORIGINAL

The invention also relates to a method for attaching a clip to a filled bag and is characterized by this that the bag is moved along a conveyor to a sealing station, that the bag is shifted sideways, to bring the center plane of an object in the bag into a flush position with the plane of the conveyor belt and that then the neck of the bag is closed while the bag is in the shifted position.

The invention further relates to a device for packing objects and contains a bag filling station, a device for supplying objects to the bag filling station, a device for displaying the bag size required for packing the next object so that the operator at the bag filling station can recognize this display, a A device for holding a bag selected by the operator, a device for introducing the object into the bag being held and a device for moving the bag forward from the filling station; a vacuum chamber offset in the conveying direction and / or a bag summarizing and fastening device can also expediently be provided be. A shrinking device can be arranged downstream of the vacuum chamber in the conveying direction . v / earth.

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The invention also relates to a package according to the above mentioned method or produced with a device mentioned above.

The invention is explained in more detail below with reference to the figures.

Fig. 1 - shows a side view of the bag filling station of an automated ham packaging device according to FIG

the invention.

FIG. 2 shows a top view of the device according to FIG. 1. Fig. 3 - shows a side view of the vacuum chamber for evacuation

and closing the by means of the device according to

Fig. 1 and 2 filled bag.

FIG. K shows a top view of the chamber according to FIG. 3-FIG. 5 - shows a side view of a possible shrink unit

for use with the device according to FIGS. 1 to H.

The ^w in Figs. 1 and 2 shown Beutelfülleinrichtung includes a feed table with a conveyor belt 1 for receiving ham, which were just removed from the cooking molds and purified. These hams are moved to the right along the table to a further conveyor belt 2, which is driven by the same drive as the conveyor belt 1, but via a corresponding coupling r.it her:

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is connected so that the linear speed of the conveyor belt 2 is twice that of the conveyor belt 1, whereby the distance between two successive hams on the conveyor belt 2 is increased. The hams are moved on the conveyor belt 2 to a photoelectric scanning device 3, in which a ham interrupts the light beam and the two conveyors 1 and 2 stop. Thus, a ham is held between an upper scanning plate 5 and a pair of side scanning plates H , which are then all moved towards the ham in order to contact the respective surfaces and to determine the height and width of the ham. The scanning plates *} and 5 move from a known reference point, and the distance they touched the ham was measured and used to derive a signal proportional to the sun: n: e of the height and width of the ham. The adding process is carried out using an electrical scanning unit in which the downward movement of the upper plate 5 and the relative closing movement of the two side plates U are added to derive a signal which, when the ham moves between plates H and 5, illuminates one of four V.'ahl] arr.pen 6 is used, which are attached to an arrangement 7 of holding bases for bags of different sizes.

0> 9-8 20/06

^SA D ORIGINAL

Thus, the operator only needs one bag of that Take the floor level with the lighted lamp 6 and this bag will fit securely over the next ham arriving at the charging station. In operation, the lamp 6 remains during the movement of the ham from the scanning device over the rollers ^ l and onto a pair of parallel conveyor belts 8 illuminated. These conveyor belts 8 have an oblong slot 8a between them.

The conveyor belts 8 move the ham along another scanning device 9 _S containing a light source, in which the ham interrupts the light beam and is released again when the ham is located between two lateral scanning plates 10. The scanning device 9 is switched so that the conveyor belts 8 are blocked when the light beam is released. The plates 10 are then moved inwardly so that they touch the sides of the ham and measure its width. The corresponding width signal is fed to a control arrangement which causes a lateral separating movement of corner plates 11, which form a filling guide for Aufnahrr.e a bag. The separating movement is indicated in FIG. 2 by the arrows 13. The ham moves away from the scanning plates 10 at the same time as the following ham moves away from the plates ¹ I and 5 · The lamp 6 is switched off before the same

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or another lamp is turned on as a result of the signal obtained by means of the scanning plates 4 and 5 of the size of the next Ham was derived.

So while the plates 10 determine the width of a ham which is just out of the loading chute formed by the corner plates 11 is, the plates 4 and 5 determine the height at the same time and the width of the subsequent ham in order to switch on the corresponding selection lamp 6 for the bag size. Thus can the operator already selects and opens the bag for the next ham just leaving plates 4 and 5, while the corner panels 11 move apart to open a bag for the ham leaving the panels 10.

The corner plates 11 begin their movement iir.mer from a position in which they have a small distance from each other, so that the bag can be easily opened by the operator. Initially the plates 11 are moved laterally apart in the direction of arrows 13, so that the width of the guide is equal to that of the plates 10 determined width of the ham. Then a pair of pivotally attached and spring loaded plates 11 in Direction of arrow 14 raised until the bag is in the desired Is stretched and a pivoting of the spring pressure

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the plates and actuation of microswitches (not shown) causes. The spring tension can of course be adjusted to match the material of the bag used in each case will.

The actuation of the microswitches as a result of the resistance exerted by the bag on the upper plates 11 causes the ham to be advanced from the second scanning position between the plates 10 into the non-narrowing bag filling chute formed by the corner plates 11. This movement of the ham is achieved by a slide located in the. aforementioned slot 8a moves. This slide, which is not shown in the figures for the sake of clarity, contains a forward, extending arm which comes into contact with the rear part of the ham and moves it into, through and out of the guide formed by the corner plates 11 and thereby pulls the bag along. The movement of the ham through the slide is continued in the direction of arrow 15 until the ham has reached the position on the chamber input conveyor h6 at the threshold of the evacuation chamber, indicated by dashed lines at.

The pusher is below the level of the various conveyors 1, 2 and 8, as the ham moves from the first scanning unit.

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direction Ί, 5 to the second scanning device 10 is moved. The slider is raised after the ham has been scanned between the two plates. The rollers 41 held on lever arms are raised and allow for forward and upward movement of the slide in the direction of arrow 15 in FIG. 1, so that the slide emerges from under the rollers 41. The advance and retreat movements of the slide are indicated in FIG. 1 by arrows 15 and 17.

In order to reduce the time required to evacuate the bag, the Doppe1 evacuation chamber shown in FIGS. 3 and Ί is used used in the two bags side by side at the same time to be evacuated. In this way, the throughput of ham can be increased to around 10 per minute. This is the maximum throughput with the available cooking and molding systems for ham.

The filling of the double chamber is controlled by means of two parallel rows of conveyor rollers 19 , 20, which can optionally be driven in the feed direction. Between the rollers of the rows 19 and 20 there are push rods 18 which can be moved vertically and horizontally between the rows in order to alternately move ham from the position 16 on the rollers 20 to a parallel one

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Position l6a on the other row of rollers 19 to promote. The operation of the push rods 18 is adapted to the operation of the corner panels 11 and the conveyors 8, so that the push rods each perform only one cycle of lateral movement while the corner panels go through two cycles. The push rods 18 are raised to let the ham 16 free from the rollers 20 and then moved horizontally into alignment with the ψ rollers 19 and finally lowered to bring the ham 16 onto the rollers 19, whereupon the bars settle 18 move horizontally under the rollers 20.

Has the device gone through a cycle of feeding two consecutive hams to the rows of rolls 19, two consecutive hams to the rows of rolls 19, two consecutive hams to the rows of rolls 19 and 20 and retracting the push rods 18 under the rolls ^ 20 corresponds, the rollers 19 and 20 are driven to produce a feed movement for the two hams, which move side by side into the open vacuum chamber. The chamber contains a pair of infeed conveyor belts 21 and main conveyor belts 22 which define two parallel tracks for the hams along each side of the chamber. The conveyor belts 21 are separated from the conveyor belts 22 by a gap. In the gap there is a vertically movable scanning roller 2 ^l \. To the left of this scanning roller 2 * 1 is a path extending laterally over the chamber.

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which includes four bracket stops, the operation of which will be described later. The conveyors 22 stop when the trailing edge of each ham has passed the follower roller 2k and the roller has thereby been raised. This indicates that the two hams have reached the closed position. The conveyor belts 22 are vertically movable in order to allow a lowering by half the height of an average ham to be packaged. This enables the clip to be attached essentially in the median plane of the ham, ie in a plane which is located midway between the upper and lower surfaces of the ham.

After the sealing process has ended, the conveyors 22 are raised again and convey the ham to an immersion shrink bath 37 (Figure 5). Of course, the movement of the hams along the conveyors 21 and 22 is very carefully linked to the operation of the The vacuum chamber is synchronized so that the cover of the chamber is only lowered when the ham is completely on the Conveyor 22 is located. The cover then comes sealingly into engagement with the base plate of the chamber, so that the chamber, which is now Contains two adjacent bags, the necks of which are enclosed in a manner to be described, can be evacuated. Is the the desired negative pressure is reached in the chamber, a pressure

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switch actuated, which effects both the final gathering and closing as well as a SehneidVorgang the excess bag material is cut off. It is clear that the cutting process is intentionally carried out incompletely, so that the excess material sticks to the bag and can later be removed by an operator. To this In this way, an additional separating device which removes the ρ cut end from the chamber is avoided. There are also difficulties avoided, which can arise from the fact that cut bag ends sit in front of the vacuum lines. the subsequent movement of the vacuum-packed ham into the immersion bath takes place automatically when the cover 26 of the vacuum chamber has been raised.

The immersion shrink bath, which is shown in a side view in Fig. 5, contains a double-walled container 37, on the upper part k of a holder with a plurality of driven rollers 38 is provided, which are rotated by an endless chain by means of a driven shaft . The driven shaft can be coupled to a drive shaft via a pneumatically operated coupling (not shown). If a vacuum-packed ham reaches the row of rollers 38 , their rotational movement is interrupted, the coupling is released and the row of rollers is lowered into the container 37.

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The container 37 also contains an automatic liquid level and control unit j to ensure that the water level is kept constant. Furthermore, a heating and thermostatic control device provided.

In order to avoid steam losses from the hot water bath, which would require a compensation of the heat losses and through which high humidity in the area of the bag filling station could result in dissolution of the unpackaged ham can lead, the rollers 38 are arranged above a plate 39, which seal an inwardly directed flange 39a touched. So when the rollers 38 are in their raised position the Schruir.pfbad is sealed. Before the downward movement the rollers 38 begins to immerse the packaging, a cover 40 is lowered and lies on the sealing upper wall of the container 37. Only in the sealing position of the covering hood ^ O are the rollers 38 for dipping the ham in the shrinking medium, in this case in hot water.

In order to prevent the ham from floating up during the lowering process, the covering hood 40 is provided with a perforated basket h 5, which is automatically locked with the rollers 38 and lowered with them after the hood has been placed on top. on

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in this way the ham is pressed under water for the length of time required to shrink. After the shrinking process has ended, the rollers 38 are raised until the plate 39 rests against the flat 39a in a sealing manner. Then the basket ^ 5 comes free from the rollers 39 and is ^{fixed on the cover hood 1} ^ O , which then lifts up with him. At the same time, the clutch is re-engaged and the rollers 38 move the processed product to a collection point. It can be seen that the basket * 15 can be dispensed with if it is unlikely that the packaging will float in the water.

Steam which enters the cover hood during the immersion process and which would otherwise be distributed after opening the immersion shrink container is hotter than the surrounding air and is retained in the hood. Any possibility of the steam to cool in the air under the hood, to condense and precipitate, can be prevented by reacting, for example, providing a cooling jacket in the hood ¹ JO cooling devices. In this embodiment there is a water spray device which condenses the steam for a short period of time before the shrink bath is opened so that it, together with the sprayed water, gets between the rollers 38 and during the next immersion process it becomes immersed in the remaining water Container 37 mixed.

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It can be seen that the machine shown and described forms a fully automatic packaging device in which only the bag of the appropriate size must be pulled by hand over the corner plates 11 forming the filling chute. Even the Selection of the correct size bag is mechanical and there is practically no possibility that the machine as a result of the Activity of the operator works incorrectly.

If too large a bag is selected by the operator, the device will operate completely normally and none will occur Interruption, although it is possible that this oversized pouch will only loosely around the ham even after it has been shrunk lies. If, however, a bag that is too small is selected, the two upper plates 11 prematurely indicate a tension in the bag, whereby their upward movement ends and a disturbance arises when the next ham coming into the guide arrives. In any case, the rail 12, which extends across the device at the entrance to the filling guide, rises together with the upper ones Plates 11. If the lifting process of this rail 12 is interrupted before it reaches a point above the upper part of the next one Ham has reached, this ham hits a switching plate 12a, whereby the conveyor 8 and the pusher are stopped. The stopping of the conveyor 8 leaves a second subsequent

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Ham the light beam of the scanning device 9 at the entrance interrupt the plates 10 and prevent the release of this light beam. This stops conveyors 1 and 2, and the Ham transport is interrupted until the operator removes the wrong bag and a bag that fits Size for the next ham.

Although not described above, a further switching plate is located behind the rail 12, based on the transport direction 12b, which must be pressed by the operator during operation of the bag filling unit in order to indicate that a Bag is located on the plates 11 in a position. As long as the switching plate 12b is not depressed, the moves Slide not forward to insert the ham into the guide.

The separation and approach of the various plates 11 is by means of controlled by a hydraulic system, which acts as a combined brake and lock on the drive of these plates. The movement of the Plates 11 is reached by pneumatic cylinders, which are in the appropriate Move their piston rods in a direction that corresponds to the separating movement of the plates 11. Each piston rod carries a secondary piston and extends sealingly through a second

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cylinder in which the secondary piston can be moved in a sealing manner. The opposite ends of the secondary pistons are on hinged to a closed hydraulic circuit containing a shut-off valve. The amount of horizontal separation movement 13 of the corner plates 11 is controlled so that when a separation of the plates 11 is reached, that determined by the plates 10 Width of the ham corresponds, the check valve is closed and the hydraulic system immediately the piston rod locked against further movement. Accordingly, in the vertical separating movement in the direction of the arrow I ^ a Interruption achieved by means of the associated hydraulic system at the moment when the associated limit switch starts the pivoting movement of the top panels 11 due to the tension of the bag.

The closing and summarizing process that takes place in the vacuum chamber is carried out, is described below with reference to the closing and summarizing devices used.

The Chamber according to Pig. 3 and ¹¹ contains a magazine 29 for receiving two parallel rows of clips, each of these rows belonging to a closing device for one of two bags located in the chamber. The device works so that the front

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Clamp of each row is moved laterally in the direction of arrow 31 into a position J> 6 , in which it is aligned with a clamp guide 35 held by the cover hood 26. At this point the clip is ready to be attached to the bag, and attachment requires only that the clip be pushed up at the appropriate time by means of a clip blade 30 operated by a pneumatic piston and cylinder assembly J> H. The actuation of the pneumatic cylinder J> k can, however, only begin when the neck of the bag has been completely collapsed.

The full summary becomes more appropriate as you move Faare of summary stops 33 reached that laterally over the Device are moved towards each other in a position in which they serve as a guide for a single U-shaped bracket.

^ Before the final summarization, however, the Bcutelhals was partially summarized by lowering a transverse rail 32 together with the cover 26 into a position in which it is above and at a distance from the scanning roller 24. In this position, the bag neck is held between the scanning roller 2k and the transverse rail 32, but can extend laterally over the entire associated half of the vacuum chamber. Thus, when closing

209820/0653 BATH ORIGINAL

the Chamber at the same time a partial summary of the Bag neck causes. The vacuum chamber is then evacuated until the pressure switch indicates that the desired Vacuum is reached, whereupon the pairs of summarizing stops 33 move towards one another around the neck of the bag completely by bringing the side edges of the collapsed bag in a position in which they are only a very small distance apart. If the attacks are in this position, they serve as guides for the brackets, as each of the stops has a slot extending longitudinally along one edge. The stops of each pair are arranged so that the slots face each other. The staple sheet 30 needs then only to be lifted to the clamp 36 along the Slide guide slots in the cooperating stops 33 so that the free ends of the legs of the U are in engagement with the Clamp shape 35 come and are bent over so that they have a sealing Form a seal around the neck of the bag.

After the clips have been attached to the respective neck of the bag, a cutting knife 28 held within the hood 26 is lowered, to partially cut off the superfluous bag material along the clip. This leaves the cut material in the

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Chamber and in connection with the bag from which it is afterwards be torn off by an operator, for example during the stacking of the packaged hams at the collection point can.

The illustrated arrangement of the Klar.reermagazin outside the vacuum chamber is particularly advantageous because the chamber volume to be evacuated only has the vertical path through which the clamp 36 between the "ready" position: according to FIG. 1 and the "consumption" position is moved, in which the clamp is placed around the bag. This area is opposite to the rest of the Klar: - mermagazins sealed so that it is not necessary to evacuate the magazine continuously and again under atmospheric pressure To put pressure. In this way, the volume to be evacuated the chamber can be reduced considerably.

Although the invention has been described in connection with the packaging of ham W and although some preferred features have resulted from the packaging of ham in a fully automatic machine and without damaging the hams, it will of course be understood that many of the inventive features apply equally to the Packaging of various types of other items can be used. Thus, the invention is by no means limited to packaging

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limited by ham. Although in the described and illustrated preferred embodiment, the individual parts of the device were connected to one another and a fully automatic device for filling bags, evacuating the bags, sealing the bags and shrinking the bags cooperated to represent, it is clear that the invention also Use of one or more of the elements of the device according to the invention in connection with conventional elements. For example, the bag filling device according to FIGS. 1 and 2 can be used together with any other type of bag evacuation and sealing device and / or other types of shrinking devices. Likewise, the vacuum chamber according to FIGS. 3 and 3 can be used together with other feed devices and shrink containers.

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Claims (1)

Expectations 1. Device for vacuum packaging of objects in bags with a vacuum chamber and a conveyor for feeding a filled but not summarized bag to the chamber, characterized by a device {2.K, 32, 33) in the chamber for combining the bag neck and by a fastening device ψ (30 »35) for fastening the combined bag neck · inside the chamber. 2.Vorrichtung according to claim 1, characterized in that the fastening device a closure device contains and that in the collator elements (24, 32) to form an elongated slot partially enclosing the neck of the bag and a pair of summarizing stops (33) are provided between positions at the respective ends of the slot and a closure layer can be moved close together, in which they are located near the center of the slot and gather the neck of the bag together before sealing. 3.Vorrichtung according to claim 2, characterized in that the stops (33) have opposing Klarnmeraufnanmeschlitze, which in the closed position of the Stops form a bracket guide through which one ORIGINAL BATHROOM 209820/0653 Clip (36) can be guided during the closing process, so that it pulls the combined neck of the bag with it during the closure. 4 »Device according to claim 2 or 3 * characterized in that that the chamber has a receiving table (22) for holding the bags during the summarizing and closing process contains, which is movable between a raised receiving position and a lowered closed position that the Elements a roller (24) arranged at the entrance of the table (22) and a rod (32) arranged above the roller have, which is movable to form the elongated slot during the gathering process down to the roller. 5. Apparatus according to claim 4, characterized by an adjusting device to change the position of the closing pitch of the table (22) in order to adapt to changes in height of the To reach objects. 6. Device according to one of claims 1 to 5 * by a pair of parallel conveyors (19> 20) for the simultaneous conveyance of two filled bags into the chamber, in which they are evacuated and closed by another, supplying one of the adjacent conveyors Conveyor (8b) and a transfer device (18), the objects from one of the parallel conveyors (20) moving the other conveyor (19), the two being parallel Conveyor (19 »20) to Auf'narne, jewel Ls one filled 2098 2 0/0653 " ³⁰ " received om 2ir, / e? Z _t Bag can be operated at the same time. 7, device according to claim 6, characterized in that the both parallel conveyors (19, 20) are roller conveyors and that the transfer device (l8) consists of slides, extending up between the rollers of the conveyors, around an object to the side of a roller conveyor (20) to be moved to the other roller conveyor (I9) "gen. 8. Packaging device with a sealing station and a conveyor for feeding the bag to the sealing station, characterized in that a closing device (33> 35) in the closing station essentially in the the same level as a feed conveyor (21) and a receiving table (22) for receiving the bag during the Closing process, the receiving table between a raised pick-up position and a lowered closing position is movable. 9. Apparatus according to claim 8, characterized by a device (24, 32, 33) for combining the bag before closing. 10. Apparatus according to claim 8 or 9, characterized in that the closed position of the Aufnahrnetlsches (22) for adjustment is adjustable to changed heights of the objects. 209820 / 0B53 received .Device according to claim 9> characterized in that the locking device has a pair of locking barrel stops (33) which cooperate with bag locking rods (24, 32) which can be moved towards and away from one another, and that the gathering stops (33) are movable parallel to the rods (24, 32) and one Form clip guides that are used to close the bag is aligned with a bracket shape (35). 12. Device for packing objects in bags with a bag filling station and a conveyor for feeding objects of arbitrary size to the bag filling station, characterized by a display and size detector (4.5 * 6) for displaying the size of the for the next in the Loading station (11) required bag to be packaged by a device for holding one of the Operator selected bag and by a filling device (8) for introducing the object into the held Bag and for moving the bag from the bag filling station. 15. device for packing objects in plastic bags, which are then heat-shrunk, marked through a container for receiving a heated liquid, through one between a closed and a sealed position for the container and a remote position movable cover and by a holder for receiving 209820/0663 eifigsgoogen of an object between a raised and a submerged position, the holder having a Contains means for sealing the container in the raised position of the holder. 14.A method for vacuum packing, characterized in that a filled, niohtzusammengefaßter bag placed in a chamber sealed this chamber and evacua- * is ated that then the bag neck is tightly grouped together and that, finally, a bracket is placed around the combined bag neck. 15. The method according to claim l4, characterized in that the neck of the bag is enclosed prior to evacuation of the chamber and that the complete summary of the bag neck is not carried out before the end of the evacuation process. 16. The method according to claim 14 and 15, characterized in that the bag is placed horizontally in the chamber and then lowered during evacuation by a distance corresponding to half the height of the filled bag will. 17 · The method according to one of claims 14 to 16, characterized in that the filled bags along a first lane to be transported to the entrance of the chamber 209820/0653 received nm and then every other filled bag is laterally shifted to a second position at the entrance of the chamber and that at the same time two bags located in the first and in the second position into the chamber be introduced. 18.Verfahren for attaching a clip to a filled ^N bag, which is brought via a conveyor belt to a closing station in which the clamp is attached, characterized in that the bag is moved in the vertical before closing, so that the horizontal The middle plane of the filled bag is in an aligned position with the conveyor belt and that the clamp is fastened in this position. su: ms 209820/0653