DE4443252A1 - Device for banding goods - Google Patents

Description

The present invention relates to a device for ban demolish, strapping or the like of goods with a Transport device for moving forward and backward one can be guided around a product and from a storage facility peelable strapping or strapping, a control device for controlling the banding or Strapping process, at least one first clamping device, a knife device, a connecting device for Connect superimposed areas of the goods around looping strip and a packing table to hang up the Goods, with an over in the case of strips that are led around the goods lapping area with an upper material web and a bottom dimension material web is present.

The banding machines mainly process plastic and paper foils. Form such banding devices an economical replacement for the relatively mate Rial and energy consuming film shrinking machines.

The goods are placed on a packing table for banding. Then the banding process takes place, in which the banding stripes around the goods are looped, then clamped, tensioned, cut and with each other that is connected. The banding can be very nice nend done so that even pressure-sensitive goods without problems banded and combined into larger packaging units can be grasped. The most varied goods are bandero such as banknotes, envelopes, catalogs, le food or the like.  

State of the art

They are banding devices working as fully automatic machines known that circulate a permanently mounted over the packing table of the channel system, which is essentially U-shaped is, in which the banding strip around the ban derolating goods are carried around. A distinction is made here between machines with a tunnel open on one side and both open tunnel. Regarding the loop formation comes the arm folding principle or the ring folding principle for use dung.

A device for banding of the type mentioned is open, for example, in the applicant's EP 0 432 464 beard.

The known devices for banding are in the Re gel to a relatively narrowly limited field of application Quantity, banding cycle and size of goods limited.

Presentation of the invention

Based on the prior art mentioned, this is available underlying invention the object of an improved Device for banding or strapping the Specify the type mentioned at the beginning, the flexible use and a permanently reliable banding / wrapping maturation process ensured on economically simple and is technically precise and manageable trouble-free banding / strapping operation with high cycle frequency enabled.

The device according to the invention for banding goods is given by the features of claim 1. Beneficial  Refinements and developments are the subject of the Un claims.

Accordingly, this invention is characterized in that that a frame releasably attachable to the device direction or a detachably attachable to the device Packing table with frame and one detachable on the front fixable packing table without frame equipment is present, within which the strip around the area Goods can be moved around, the device being attached Frame equipment or attached packing table with frame direction as a fully automatic machine and with a separate frame set-up device or attached packing table without frame equipment as Is semiautomatic.

Such a device can be used in many ways. Of the Use of such a device is particularly for small and medium-sized companies interesting, because here the economical use of the relatively expensive known vollau automatic banding machines is not useful and a conversion by the device according to the invention relatively inexpensive semiautomatic machines by simple attachment easy change frame to a fully automatic machine is possible.

With the device according to the invention it is possible to tapes with a width of 15 mm (millimeters) to 60 mm (millimes ter) to process. Their thickness can range between 50 µm (micrometer) to 300 µm (micrometer).

In a first variant, there is a fixed one Packing table available, on which a frame device can be detached is attachable. When putting on the frame device switches a limit switch puts the control in the fully automatic state. In In this state, the banding process becomes fully automatic carried out, i.e. the banding strip is inserted  shot, led around the package, clamped, tensioned, ver bound and then released. Will the framework detached from the packing table, the control device switches on automatically in the semi-automatic state. The semi-automatic under differs essentially from the fully automatic machine in that the band manually around the goods to be banded at least partially led around and the withdrawal process for tensioning the banderole not automatically but only on Prompted by the operator.

In another variant, a packing table is included a frame device available, the packing table as such is releasably attachable to the rest of the device. To convert from semi-automatic to fully automatic first the detachable existing packing table can be removed alone and the new packing table with integrated frame equipment can be detached be attached, the switching of the control unit direction from semi-automatic operation to fully automatic operation moves automatically.

A particularly preferred embodiment of the invention The device is characterized in that the frame device at least in the Be projecting beyond the packing table rich has a steady gradient, in particular is elliptical. By an elliptical Training of the framework, which as a channel for serves the banderole, the banderole is located itself made of fairly thin film material, in one relatively stable shape, so that the collapse of the bandero lierstreifens is prevented during the channel bypass. There by eliminating the known means for releasing the gang role before the contracting process, since the banderole is not in a closed channel.

Overall, the device according to the invention ensures a easy changeover from semi-automatic to fully automatic and  vice versa, which is also reliably performed by a layperson can be. The simplicity is also favored by that automatically when putting on or taking off the frame equipment or the packing table from Semi to full or from full to semi automatic operation is switched.

An embodiment of the banding device according to the invention device that ensures a permanently reliable banding process guaranteed, is characterized in that a sensor direction is present, which a first sensor unit for De tektieren the upper material web and a second sensor unit for detecting the sub-material web, wherein after detecting the upper material web and the lower material the subsequent clamping, cutting and connecting process is triggered and the sensor units are arranged so that only the assigned material web is detectable is.

The provision of two sensor units for the upper material web and the sub-material web ensures that always over mutually lying banding strip sections are present and the further banding process is carried out reliably can be. The arrangement of the Senso according to the invention ren it is not possible that only through one material address both sensors and incorrectly the closing clamping, tensioning, cutting and connecting process is carried out. Because the presence of both Material webs are reliably detected, it happens prak no failures due to faulty materials albahnzufuhr. This enables a particularly economical Lichen use of the banding device according to the invention.

It turned out to be cheap, the sensor units to train as triangulation sensors that the presence a material web within a predefinable distance range  ches detected. This distance range is preferably approximately 4 mm to 10 mm.

A particularly preferred embodiment is characterized by this that the directional characteristic of a sensor unit in the we considerable perpendicular to the material web and the directional character teristics of the other sensor unit spatially inclined to the appropriate track is formed. Because of the different types order of the directional characteristics of the sensor units can these are attached in compact positioning, whereby at the same time the reliably separate detection of the waiters or sub-material web is guaranteed.

The known banding devices usually have a transport device made up of at least two opposite drivable located under contact pressure There are transport rollers between which the banding strip fen is passed through. With such a transport direction there is a risk of prolonged standing the device give impressions on the roles that when loading drive the transport device to run out of round ken, so that there are problems with the transport of the banding can come in strips. This is due to the invention Banding device avoided in that, according to a preferred embodiment, the transport device Has rotatably mounted roller on its outer contour in terms of areas, an endlessly circulating transport unit rests elastically pressing, and the banding strip between the transport unit and the area around the area catching contour of the roller can be passed.

A structurally particularly simple reliable development dung is characterized in that the transport unit too at least one / two axes of rotation spaced apart revolving belt or band. Doing a reliable transportation process  found to be favorable that the at least one belt be the tape has a high coefficient of friction points. Rubber material can be used here. By the area-related concern of the transport unit on the rotary bar mounted roller, which is preferably driven the danger of creating impressions no longer. It has in practical tests it was found that even a part wise crumpled banding through the transport device is pulled through and smoothed.

In the known device there is the transport unit from a roller and a single pressed, rotatable Role. As a result of the point load, a high level occurs locally Film web loading, which may damage the Foil web can lead during the transport process or only low pressure forces of the roll on the roller allows what again have a negative impact on the transport process itself can. According to the invention, the claimed trans port device to a significantly higher pressure Apply transport purposes, since the transport device is flat In terms of chen, preferably the contact angle in the loading ranges between 300 (degrees) and 450 (degrees). Thus, egg ne higher tension can be applied to the film web without one To fear material damage. At the same time the transport process in terms of accuracy and reliability be further optimized.

A particularly preferred embodiment of the invention The device is characterized in that the pressure of the Transport device adjustable to the outer contour of the roller is formed, in particular a lever system with a Eccentric unit is present, and by turning the eccentric purity the height of the pressure is adjustable.

In a known banding device is on one Welding stamp inclined to its direction of displacement  Cutting knife with sawtooth contour available, which with the movement heating stamp is also moved and the under cut the material strip of the banding strip. In the In practice, this solution has proven to be less than satisfactory shows that a clean cut is not always possible. According to a further particularly important embodiment of the The banding device according to the invention becomes this disadvantage avoided. This banding device is characterized by this from that the clamping device a first displaceable clamping Stamp unit has a continuous recess for possesses the banding strip and by means of which the upper terialbahn is clampingly fixable, and one in particular the first clamping stamp unit slidably mounted second Clamp stamp unit, by means of which the lower material web is clampingly fixable, and has a relative to the Clamping stamp units movable knife device for Cut through the lower material web when the bandero is tensioned liner is present. The edge of the Knife device during the cutting process in one of the cutting edges Knife device opposite recess in some areas on.

Due to the movable knife device, which in the against immersed overlying recess during the cutting process ensures a clean, smooth cut. Since the Ver binding device, in particular welding stamp, in the immediate The proximity of the interface can be correct Free connection process after the cutting process be guaranteed. The connection is thus hot gluing (sealing) carried out. The connection can also by a different type of connection technology.

It becomes a particularly compact structure of the clamping device according to the invention in that the knife device is slidably mounted on the second clamping stamp unit.  

An improvement in the safety for the operating personnel will according to another embodiment of the invention by ensuring that a displacement device with a Coupling device for moving the after manufacture the band between the goods and banding strips nete pressure plate to release the banded goods is present, the coupling device the pressure plate when releasing the banding strips with the direction is forcibly coupled and then the opposite Decouple the shifting process automatically pelt as soon as the pressure plate encounters resistance. Like this with ensures that the move in the Mo ment is interrupted if, for example, the finger of the loading the person is accidentally present in the opening and the Sliding device just wants to close the opening. In this case, the shifter from the pressure plate uncoupled, so that an injury to the operator is excluded.

Further embodiments and advantages of the invention result themselves by the features listed in the claims and by the exemplary embodiments specified below. The features of the claims can be in any way be combined as far as they are not obvious mutually exclusive.

Brief description of the drawing

The invention and advantageous embodiments and Wei In the following, further developments of the same are based on that in the Drawing illustrated examples described and he purifies. The can be found in the description and the drawing the features can be used individually or in groups arbitrary combination can be applied according to the invention. It demonstrate:  

Fig. 1 is a highly schematic sectional view of a device OF INVENTION to the invention for banding goods with transport means, a clamping punch means with knife means and sensor means,

Fig. 2 ad highly schematic representation of the operation, at a configured as a semi-automatic device for banding goods

FIGS. 3 and 4 very schematic representation of a provided with a lös bar fixed frame means Vorrich tung for banding goods as a semi-automatic machine with a removed frame means (Fig. 3) and as fully automatic with an attached frame means (Fig. 4),

Fig. 5 shows a schematic detail perspective view of a trans-port device with a roller and circumferentially rotatably mounted belt,

Fig. 6 is a schematic representation of a displacement device with a coupling device for a printing plate and

FIGS. 7 and 8 showing a construction of a clamping device in side view and in cross section with a movable first clamping punch unit, egg ner displaceable clamping punch unit and a ver slidable knife means.

Ways of Carrying Out the Invention

The device 10 shown schematically in FIG. 1 for banding goods 11 has a housing 12 in which the essential structural components of the device 10 are housed. From a storage device 14 (bobbin), a banding strip 18 is pulled off by means of a transport device 16 , which is fed between guide units 20 and through a clamping device 22 to a starting position 24 . On the top of the housing 12 there is a pressure plate 26 which forms a support surface for the goods 11 with the housing top surface surrounding it. The pressure plate is slidably present within a packing table 58 transversely to the direction of transport of the banding strip.

At the beginning of the banding process, the beginning of the band 28 of the banding strip 18 is guided around the product 11 to an intermediate position 30 , from which the banding strip is guided below the pressure plate 26 to its end position 32 . In the area between the end position 32 and the intermediate position 30 , the banding strip 18 overlaps and forms an overlap area (double arrow 34 ) consisting of an outer material web 36 and a lower material web 38 . The transport device 16 can transport the banding strip 18 in a forward direction V and in a reverse direction R.

The clamping device 22 has a displaceable first clamping stamp unit 40 with a recess 42 through which the banding strip 18 is guided. Within the first clamping stamp unit 40 , a second clamping stamp unit 44 is also slidably mounted. A knife device 46 is also displaceably mounted within the second clamping stamp unit 44 . In the forward direction V gese hen a welding stamp unit 48 is arranged immediately after the clamping device 22 . In the further course, there is finally a further displaceable clamping device 50 , seen in the forward direction V. The shift direction is shown in Fig. 1 by arrows P.

The distance between the clamping device 22 , the welding stamp unit 48 and the clamping stamp unit 50 seen in the transport direction is shown in the figures in a greatly enlarged manner for reasons of clarity. In reality, these three components are housed in an area in the direction of transport of approximately 1.5 cm (centimeters) to 2.0 cm.

A first sensor unit 52 and a second sensor unit 54 are arranged in the region of the end position 32 of the banding strip start 28 . The first sensor unit has the task of detecting the presence of the upper material web 36 . The second sensor unit 54 has the task of detecting the presence of the lower material web 38 . The sensor units are designed as triangulation sensors, that is to say they have a predefinable detection range, which in the present exemplary embodiment is approximately 4 millimeters. The sensor units 52 , 54 are arranged in such a way that they can only detect the respectively associated path 36 , 38 . The sensor units 52 , 54 emit a signal to a control device 60 , shown schematically as a rectangular block in FIG. 1, upon detection of the respective web 36 , 38 , which then causes the further banding process by means of an interposed, not shown drive device. The control device 60 controls the entire banding process, for example the drive of the transport device 16 and the displacement movement of the clamping device 22 with its components, the welding stem unit 48 and the further clamping stamp 50 . The Dar position of the sensors is selected enlarged for clarity in Fig. 1 pulled out to the left.

The banding process now proceeds in detail as follows. After the band start 28 has reached its end position 32 , be it as shown in FIG. 1, by means of a semi-automatic machine or a fully automatic machine, not shown in FIG. 1, the first sensor unit 52 reports the presence of the upper material web 36 and the second sensor unit 54 the presence of the sub-material web 38 to the control device 60 . The following steps then run in a controlled manner by the device 60 . The first clamping stamp unit 40 is moved upward and fixes the upper material web 36 to the pressure plate 26 . Then the control device 60 emits a signal to the transport device 16 to transport the banding strip 18 in the reverse direction R. After reaching a predeterminable clamping force, the trans port device 16 stops and the second clamping stamp unit 44 is moved upwards together with the further clamping stamp unit 50 , so that the lower material web 38 is also clamped to the pressure plate 26 . With a short time delay, the knife device 46 is then moved upward, severing the lower material web 38 , whereupon the adjacent welding stamp unit 48 then moves upward and connects the upper material web 36 to the lower material web 38 . During the cutting process, the cutting edge 68 of the knife device 46 dips into an opposite recess 62 provided on the first clamping stamp unit 40 , so that a clean cutting cut is possible. Thereafter, the clamping means 22 with knife means 46 and the white tere clamping punch unit 50 and the welding pad unit 48 moves back. Now the pressure plate 26 is still between the banding strip 18 and the banded goods 11 . In the last step, the pressure plate 26 is now pushed out of the space between the goods 11 and the banding strips 18 so that the finished banded goods 11 can then be removed.

The control device 60 , which is designed, for example, for the displacement movement of the structural components as a curve control device, is responsible for the individual processes which take place over time.

The guide units 20 are only shown schematically in FIG. 1. They ensure that the guidance of the Bandero lierstreifens 18 within the housing 12 of the device 10 is possible without tape transport problems.

In Fig. 2 ad the basic working way is schematically shown when designing the device 10 according to the invention as a semi-automatic. First, the banding strip 18 is moved to the start position 24 . Then the beginning of the band 28 is manually guided around the goods 11 to be banded (see FIG. 2) to the intermediate position 30 , then transported under the goods 11 and the pressure plate 26 to the end position 32 . Then there are the further banding processes described above, such as clamping the upper material web, tensioning the banding strip by moving it in the reverse direction, clamping the lower material web, severing the lower material web with subsequent welding to the upper material web, release by moving back the clamping units with welding stamps and processes the pressure plate for removing the banded goods.

In Fig. 4 is shown schematically how a semi-automatic machine according to FIG. 3 can be converted into a fully automatic machine by simply placing a frame device 70 on the housing 12 of the device 10 . In the fully automatic machine in accordance with Fig. 4, an automatic loop formation occurs around the goods to banderolierende without the operator must intervene.

The frame device 70 is partially elliptical and serves as an open channel guide for the film web. The means for releasing the band before the contraction process can be omitted. The device 10 has in the connection area of the frame device 70 a schematically illustrated connection structure 56 , which enables the frame device 70 to be easily attached or detached. At the same time, a limit switch device, not shown, is present on the frame device 70 , which, when the frame device is placed on the packing table 58, automatically causes the control device 60 to switch from semi-automatic to fully automatic operation.

In Fig. 5 a detailed view of a Transportein direction 16 of a preferred embodiment of an inventive device for banding goods is shown. A drivable roller 72 mounted about an axis of rotation 74 has a relatively large diameter. At the same time, there are three endless revolving belts 79 which are rotatably mounted on rollers 76 with rotary axes 78 on the outer contour of roller 72 . The axes of rotation 78 of the roller 76 are arranged parallel to the axis of rotation 74 of the roller 72 . The rollers 76 are stored within a frame structure, not shown. Between the outer contour of the roller 72 and the contact surface of the belt 79 , the banding strip 18 is guided, the belts 79 being evenly distributed over the width of the banding strip 18 . The contact surface of the belts 79 is approximately 45 degrees in FIG. 5. There are also conceivable design variants in which this system area of the belt 79 is larger in the circumferential direction of the goods 72 than shown in Fig. 5. The belts 79 are preferably made of a material that has a high friction component, in particular rubber or the like plastic.

By creating a circumferentially distributed contact surface of the belt 79 , the problem of pressing in ge opposing roles is avoided according to the invention. Even after a long standstill, there are no irregularities with regard to the transport of the banding tape 18 through the transport device 16 .

In a variant not shown, the endless belt formed as a belt unit.

Fig. 6 shows schematically a displacement device 80 which causes a displacement of the pressure plate 26 to release the banding strip 18 , since this pressure plate 26 is net angeord after completion of the manufacture of the band between the goods and the upper material web 36 of the banding strip 18 . For this purpose, the shifting device 80 must perform a movement F movement. After this movement has been carried out, the banded goods can be removed. Subsequently, the displacement device 80 must cause the Druckplat te 26 is again moved in the closing direction S, so that the next banding process is carried out.

Before the pressure plate 26 has reached its closed position, there is a risk that the operator will inadvertently introduce finger limbs into the then existing opening, so that there is a risk of injury during the subsequent closing process (Rich device S). This Verligungsge driving is excluded according to the invention in that the displacement device 80 has a coupling device 82 which ensures that as soon as the device 80 comes into resistance during the closing process S, a decoupling between the displacement device 80 and the pressure plate 26 takes place immediately, so that a Injury to the limbs of the operator is not to be worried.

The release movement F and the closing movement S of the pressure plate 26 is ensured by a cut-out crank mechanism 84 for the displacement device 80 .

The coupling means 82 is in the constructive Substituted staltung FIG. 6 formed such that it has a shaped T-cross-sectionally substantially hingedly related to the crank mechanism 84 in connection cross-sectional contour, wherein the designed as a round profile web 86 of the T-shaped cross-section within a connected with the pressure plate 26 NEN recess unit 88 is basically gela gerert. Unit for fixing the position of the web 86 on the recessing 88, the latter has a circumferential groove 89, a form-fitting elastically mounted in the wall of the ball 88 Ausnehmungseinheit 85 form-fitting partially engaged with the. When moving the coupling device 82 in the release direction F, the inner flange edges 87 of the T-shaped cross-section are on corresponding counter flanks 83 of the recess unit 88 , so that during the release process F positive connection or a positive coupling is ensured. In the opposite direction, namely in the closing direction S, the construction shown ensures that as soon as the pressure plate 26 encounters resistance during the closing process against a Wi, the coupling between a form-fitting grip of the elastically mounted ball 85 and the groove 89 is released and thereby the further shifting process in direction S is interrupted. In the subsequent release process F, the recess unit 88 and thus the pressure plate 26 connected to it are automatically carried along, in which case the ball 85 engages in a positive manner in the groove 89 .

In Figs. 7 and 8 show a structural embodiment of the clamping device 22 is shown, wherein the same components already beschrie bene carry the same reference numeral and will not be explained again. Both the first clamping stamp unit 40 and the second clamping stamp unit 44 are mounted ela stically via bearing springs 66 . The great advantage of this embodiment is that as a result of the displaceably mounted knife device 46 , which is immersed in a recess 62 on the first clamping stamp unit 40 during the separation process, a clear cut can be made and thereby a perfect welding or connecting process of the immediately adjacent sweat - or connection stamp between the upper material web and the lower material web can be guaranteed.

The control of the individual components of the clamping device 22 is not shown in the figures for the sake of clarity and does not pose any difficulties for the person skilled in the art, since this control can be carried out, for example, via known curve control devices. The movement of the individual component components can also be controlled electronically via servomotors, pneumatically or hydraulically.

Claims (13)

1. Device ( 10 ) for banding, strapping or the same of goods ( 11 ) with

• - A transport device ( 16 ) for moving forward and backward around a goods ( 11 ) and from a storage device ( 14 ) removable strapping band ( 18 ) or strapping,
• - a control device ( 60 ) for controlling the banding or strapping process,
• - at least one first clamping device ( 22 ),
• - a knife device ( 46 ),
• - A connecting device ( 48 ) for connecting over mutually lying areas of the goods ( 11 ) loop around the strip ( 18 ) and
• - a packing table ( 58 ) for placing the goods ( 11 ),
• - wherein, when guided around the goods (11) strip (18), an overlap region (34) is provided with an upper material web (36) and a lower material web (38) characterized in that a detachably attachable to the apparatus (10) frame means ( 70 ) or a detachably attachable to the device ( 10 ) packing table ( 58 ) with frame device and a detachably attachable to the device packing table without a neon device, within which the strip ( 18 ) can be passed around the goods ( 11 ) in some areas, whereby the device ( 10 ) can be operated by means of the control device ( 60 ) with a frame device ( 70 ) or a packing table with a frame device as a fully automatic device and with a separate frame device ( 70 ) or a packing table without a frame device as a semi-automatic device.

2. Apparatus according to claim 1 or according to the preamble of claim 1, characterized in that a sensor device is provided which has a first sensor unit ( 52 ) for detecting the upper material web ( 36 ) and a second sensor unit ( 54 ) for detecting the lower material web ( 38 ), whereby after the detection of the upper material web ( 36 ) and the lower material web ( 38 ) the subsequent clamping, cutting and connecting process is triggered and the sensor units ( 52 , 54 ) are arranged such that only the assigned mate rialbahn ( 36 ; 38 ) is detectable. 3. Device according to claim 2, characterized in that the sensor unit is designed as a triangulation sensor is. 4. Apparatus according to claim 2 or 3, characterized in that the directional characteristics of a sensor unit essentially chen perpendicular to the material web and the directional characters The other sensor unit is spatially inclined to proper path is formed. 5. The device according to the preamble of claim 1 or according to one or more of the preceding claims, characterized in that the transport device ( 16 ) has a rotatably mounted roller ze ( 72 ), on the outer contour of which is extensively be an endlessly rotating transport device ( 16 ) rests in an elastically pressing manner, and the banding strip ( 18 ) can be carried out between the transport device ( 18 ) and in some areas the outer peripheral contour of the roller ( 72 ). 6. The device according to claim 5, characterized in that the transport device ( 16 ) has at least one / one around two spaced axes of rotation ( 78 ) circumferential belt ( 79 ) or circumferential belt. 7. The device according to claim 6, characterized in that the at least one strap or the strap one has a high coefficient of friction. 8. The device according to the preamble of claim 1 or according to one or more of the preceding claims, characterized in that the clamping device ( 22 )

• - A first displaceable clamping stamp unit ( 40 ) has a continuous recess ( 42 ) for the ban derolierstreifen ( 18 ) and by means of which the upper material web ( 36 ) can be clamped, and
• - A second clamping stamp unit ( 44 ), in particular displaceably mounted in the first clamping stamp unit, by means of which the lower material web ( 38 ) can be fixed by clamping and
• - A relative to the clamping stamp units displaceable knife device ( 46 ) for severing the Untermate rialbahn ( 38 ) with a stretched banding strip ( 18 ) is available.

9. The device according to claim 8, characterized in that the knife device ( 46 ) on the second clamping stamp unit ( 44 ) is slidably mounted. 10. The device according to the preamble of claim 1 or according to one or more of the preceding claims, characterized in that a displacement device ( 80 ) with a coupling device ( 82 ) for moving the after the manufacture of the band between the goods ( 11 ) and banding strips ( 18 ) arranged pressure plate ( 26 ) for releasing the banded goods ( 11 ) is present, the coupling device ( 82 ) the pressure plate ( 26 ) upon releasing (F) of the banding strip with the displacement device ( 80 ) is forcibly coupled and during the subsequent counter sets ongoing displacement process (S) automatically uncouples as soon as the pressure plate ( 26 ) encounters resistance during the displacement process. 11. The device according to claim 1, characterized in that the frame device ( 70 ) in the projecting area from the area has a steady gradient, in particular is elliptical. 12. The device according to one or more of claims 5 to 7, characterized in that the amount of pressure of the transport device ( 16 ) on the outer contour of the roller ( 72 ) is adjustable, wherein in particular a lever system with an eccentric unit is available. 13. The apparatus of claim 1 and / or claim 11, characterized in that a switching unit on the frame device or on the pack table is present, which the control unit when opening set the frame equipment or the Packti in the fully automatic or Semi-automatic switches.