DE102012101503A1 - Removal device for removing liquids from containers - Google Patents

Abstract

A removal device (40) for removing liquids from plastic containers (10), wherein the removal device (40) has a tubular body (64) through which a liquid can be guided, and wherein said tubular body in an end portion (94) along a predetermined longitudinal direction (L) and wherein at the end portion (94) a peripheral edge (98) is formed, which is in contact with a portion of the container (10), further comprising at the end portion (94) a piercing means (42) for piercing a portion of the container (10) is arranged. According to the invention, the end section (94) has an outer cross-section tapering towards the end section (95), and the piercing device (42) protrudes in the longitudinal direction (L) towards at least one further section of the peripheral edge (98) Advance movement of the removal device (40) on the container (10) to the piercing device contacted the portion of the container earlier than other areas of the peripheral edge (98).

Description

The present invention relates to a removal device for removing liquids from containers. The invention is described in particular with reference to dispensing systems which remove plastic containers, liquids and drinks in particular. It should be understood, however, that the invention may be applied to other liquid dispensing devices.

Such devices for the removal of liquids from containers have long been known from the prior art.

For example, describes the DE 10 2007 054 431 A1 a device for removing liquids from a container. In this case, a deformation element is used, which deforms the container, said deformation element here folds the container to be emptied and in this way allows almost complete removal of the liquid from the container. The disclosure of the DE 10 2007 054 431 A1 is hereby fully made the disclosure content of the present invention.

From the WO 97 32807 For example, a fluid pressure mechanism is known which is particularly useful for liquids such as adhesives. Again, a container is squeezed and taken from a predetermined withdrawal point liquid from the container.

The US 2005/023307 A1 also describes a beverage dispenser. Again, a stamp member is provided which compresses the container and thus withdraws liquid container.

From the US 2003/0197022 A1 a thin-walled container is known, which is also suitable for removing liquid by compressing the container.

The prior art also discloses a multiplicity of removal means and removal methods which perforate a container or a container closure in a wide variety of ways in order subsequently to be able to remove the liquid from the container. Thus, for example, it is known that thin films are pierced at the container closure and then the liquid flows out of the container in order to be able to be removed.

However, in the application on which the invention is based, the additional problem arises that the container itself is compressed and is therefore under considerable pressure. For this reason, the removal device should be designed so that it allows a sufficient seal against the container.

Advantageously, it should also be possible to apply the invention to conventional container closures known from the prior art. In contrast, special closures are often used in the prior art, which serve only for liquid removal.

These objects are achieved according to the invention by the subject matters of the independent claims. Advantageous embodiments and further developments are the subject of the dependent claims.

A removal device according to the invention for the removal of liquids from plastic containers and in particular compressible plastic containers has a tubular body (or a (pipe) line), through which a liquid can be guided. In this case, this tubular body extends in an end portion along a predetermined longitudinal direction and at the end portion is (at least partially) a peripheral edge formed, which is engageable with a portion of the container and in particular with a portion to be pierced by the container in contact.

Furthermore, a piercing device (also referred to below as a piercing device) for piercing a portion of the container is arranged at the end portion.

According to the invention, the end section has an outer cross-section tapered in relation to the end section of the removal device and the piercing device protrudes in the longitudinal direction relative to at least one further section of the peripheral edge in such a way that when the container is moved onto the removal device the piercing device protrudes the section of the Container contacted earlier than other areas of the peripheral edge.

Thus, in contrast to the prior art, the entire peripheral edge is not placed on the container or the container wall at any given time in order to sever it. In this way, a precise cutting or cutting process can be made with the wall of the container. It should be noted that not only the wall of the container itself is expected to the Behältniswandung, but also the wall of a closure of the container. Advantageously, the piercing device serves for piercing a closure of the Container. However, it would also be conceivable that the container itself (for example, at a shoulder portion of the container) is pierced.

The tapered outer cross section is used in particular for sealing the area between the container closure and the removal device. In this way it can be achieved that during a compression of the container, the exiting liquid flows completely over the removal device and not laterally past this.

Advantageously, the removal device has a circular or elliptical cross section.

The procedure according to the invention makes it possible to open standard closures of containers, in particular plastic closures.

In a further advantageous embodiment, the removal device is arranged on a holding device. Advantageously, this holding device also has a receiving area or a recess for receiving a container closure of the container. Advantageously, the above-mentioned longitudinal direction of the removal device extends in a longitudinal direction of the plastic container (which is preferably also a direction of a relative movement between the container and the lancing device during piercing).

Thus, the container closure is advantageously centered by the holding device and the removal device, which can also be referred to below as the removal tube, pierces the closure of the container - particularly preferably substantially centrally.

In an advantageous embodiment, the peripheral edge is at least partially formed as a cutting edge. By this design of the peripheral edge, a very precise and defined opening of the container closure or the container can be achieved.

Advantageously, this cutting edge contains the piercing device and / or even this piercing device. Preferably, the piercing device is formed by the cutting edge in its entirety. In this way, as mentioned above, a defined separation process of the container closure is achieved.

In a further advantageous embodiment, the cutting edge is (only) formed along a circumferential angle which is between 10 ° and 350 ° degrees. It is therefore pointed out that preferably the cutting edge is not formed completely encircling. In this way it can be achieved that a predetermined area of the container or container closure is not cut and in this way no area segment is completely cut out, for example the container closure, but this area segment is indeed cut, but remains hanging on the container closure. This in turn is advantageous so that in the subsequent removal of such a surface element can not hinder the removal process of the liquid.

The circumferential angle is to be understood with regard to the removal device. For example, if the extraction device has the shape of a circular tube, this circumferential angle can be defined with respect to an axis of symmetry of this tube.

In a preferred embodiment, the cutting edge is formed along a circumferential angle which is greater than 20 °, preferably greater than 60 °, preferably greater than 100 °, preferably greater than 140 °, preferably greater than 180 °, preferably greater than 220 °, especially preferably greater than 260 ° and preferably greater than 300 ° and preferably greater than 340 °.

In a further advantageous embodiment, the cutting edge is formed along a circumferential angle which is less than 340 °, preferably less than 300 °, preferably less than 260 °, preferably less than 220 °, preferably less than 180 °, preferably less than 140 °, preferably less than 100 °, preferably less than 60 °.

In a further advantageous embodiment, the peripheral edge has a blunt edge portion. This edge portion is just not suitable for cutting or cutting the container or container closure and causes in this way that no circumferential line is cut into the container closure.

This running edge with the blunt edge portion complements advantageously with the cutting edge to a circumferential angle of 360 °. This means that particularly preferably the peripheral edge is formed closed. However, it would also be possible for the peripheral edge to have one or more recesses.

In a further advantageous embodiment, the peripheral edge extends substantially in one plane. Preferably, this plane is inclined to the above-mentioned longitudinal direction. In this case, an angle between a plane normal and the longitudinal direction is advantageously between 5 ° and 80 °, preferably 10 ° and 70 ° and particularly preferably between 20 ° and 60 °.

By this inclination, as mentioned above, the cutting process when piercing the container closure is improved.

In a further advantageous embodiment of the blunt edge portion is arranged in a region of the peripheral edge, which contacts the container in a feed movement of the removal device to the container to the cutting edge. This means that initially, for example, the container closure, is cut by means of the cutting edge and in a further feed movement, the cut edge piece remains on the container closure and is pushed away by this feed movement. Thus, the partially cut-out portion remains on the closure.

Preferably, the edge portion of the removal device is designed such that after placing the cutting edge or the edge portion on the container closure first full sealing of the pipe end or edge portion relative to the closure or the closure surface occurs and only then is started with the cutting process. This can be achieved by a correspondingly adapted inclination of the cutting edge or its plane relative to the longitudinal direction of the removal device. The concrete angle of inclination depends inter alia on the resilience of the surface of the closure or on its rigidity. Thus, prior to the actual cutting process, a full sealing of the removal device with respect to the surface of the closure preferably occurs on the process side.

In this way it can be prevented that inadvertently gas or product can splash out of the container past the removal device or the removal tube.

In a further advantageous embodiment, the removal device is formed of a metal. In this way, in particular a sufficient stability can be achieved in order to possibly pierce somewhat harder container closures.

In a further advantageous embodiment, the removal device or at least the peripheral edge is formed heatable. For example, a heating wire could be arranged in the end section of the removal device. By such heating, the container to be pierced or the closure to be pierced can be somewhat softened so that the cutting operation can be carried out more easily.

In addition, it would also be possible for the peripheral edge, for example a sawtooth-like structure, to be able to cut the plastic of the container closure more easily. It would also be conceivable that in addition to the feed movement and a rotational movement of the removal device is carried out, for example, with respect to the said longitudinal direction. In addition, the said measures can also be combined with each other.

The present invention is further directed to a method for withdrawing liquids from a plastic container, wherein a removal device pierces a wall portion of the container and is subsequently discharged therefrom in the container liquid through the removal device from the container.

According to the invention, a predetermined piercing region is first pierced by means of a piercing device, and then the removal device is introduced in sections into the interior of the container. Furthermore, a sealing movement between the removal device and the container is achieved by a feed movement of the container relative to the removal device. Advantageously, a removal of the liquid from the container is then carried out through the removal device. Advantageously, the container is compressed for the purpose of removal. The sealing effect is achieved in particular by the further introduction of the removal device and the tapered or upwardly widening region of the removal device.

Advantageously, the removal device is introduced into the container only so far that a peripheral edge of the removal device completely immersed in the liquid in the container.

Advantageously, the removal device does not completely cut the container closure, but partially. With particular preference, a partially cut-out region thus remains suspended on the container closure. In this way it is achieved that no components of the container closure fall into the container.

An advantageous device for removing liquids from plastic containers has a first holding device, which is suitable for holding a first portion of the plastic container. Furthermore, the device has a second holding device, which is suitable for holding a second portion of the plastic container, on. In this case, said second portion of the plastic container in one Initial state of the container - ie in particular a completely filled state of the container - arranged spaced from the first portion of the plastic container.

Furthermore, the holding devices are advantageously arranged such that the container can be arranged at least in sections between these holding devices and so by a relative movement of a holding device relative to the other holding device is deformable. Furthermore, a drive device for generating a relative movement between the first holding device and the second holding device is provided, so as to deform the container arranged between these holding devices such that its inner volume is reduced.

Furthermore, the device advantageously has a removal device, which has a flow connection to the interior of the container and in particular to the liquid therein and over which the liquid can be removed as a result of compression of the container.

Advantageously, the device has a control device which controls the relative movement of one holding device relative to the other holding device in (at least indirect) dependence on an internal pressure within the container. The inventive method is in particular the subject of the above application DE 10 2007 054 431 The manner and direction in which the container is deformed is broadened and, in particular, the manner in which the emptying of the container is controlled. By "at least indirect dependence" is meant that a control in immediate dependence on the internal pressure is possible, but also in indirect dependence (for example, depending on a drive torque of the drive device, which degrades from the internal pressure in the container or in dependence on the pressure the liquid in the withdrawal device.

The drive device may in particular be an electric motor, which controls the relative movement of the holding devices relative to one another via a spindle drive, for example. Advantageously, therefore, the drive device also has a transmission device which converts a drive speed of the drive motor into a lower movement speed.

In addition, however, the use of hydraulic or pneumatic drives for moving the holding devices relative to each other would be conceivable. Advantageously, the movement of the holding device relative to each other is rectilinear and in particular along a longitudinal direction of the container. It would be possible that a holding device is arranged stationary and moves the other of these opposite. However, it would also be possible for both holding devices to be moved.

In a further advantageous embodiment, a carrier is provided, to which at least one holding device is arranged. Advantageously, the other holding device is arranged on a corresponding carrier.

In a further advantageous embodiment, a holding device extends in the longitudinal direction of the container and preferably has a preferred length, which corresponds to at least one third of the total length of the container.

In a further advantageous embodiment, the first holding device serves to hold a bottom region of the container. For this purpose, for example, the first holding device may have a recess into which a bottom region of the container can be introduced. It would be possible that the holding device is adapted to a shape of the bottom of the container. However, it would also be possible that this holding device, for example, hemispherical or formed in a similar manner. Advantageously, the device according to the invention is designed such that it is suitable for liquid removal from commercially available containers. In particular, the device is also designed such that it is suitable for removing liquids from containers which have standard closures, such as plastic screw closures.

In a further advantageous embodiment, the second holding device serves to hold a mouth region of the container. It would be possible that an inner surface of the first holding device is adapted in terms of their geometric shape to an outer surface of the container. In this case, the container can be compressed so strong with correspondingly strong drives that almost the entire liquid can be removed from the container. Unlike the one in the DE 10 2007 054 431 A1 shown device in which a special container is used, this is also possible in such containers, which have differently shaped bottoms, such as in PET bottles usual floors. Advantageously, the second holding device has a recess for receiving a closure of the container.

The control device according to the invention causes, for example, a compression of the Container is stopped at a certain maximum pressure. In this way, on the one hand the risk of bursting of the container can be prevented and on the other hand, it can also be prevented that liquid is removed with too high pressure. For these control devices described below in detail different ways are conceivable.

As mentioned above, the device for removing the liquid can be carried out with relatively simple means. For example, the PET container can be compressed by means of threaded spindles and an electric drive so that the container can be reduced to a very small volume in order to empty the container to a very small residual volume. Advantageously, the container is a container having a size between 2 and 10 liters and in a commercial application between 10 and 30 liters.

In a further advantageous embodiment, the first holding device and the second holding device are arranged such that the container can be arranged standing and with its mouth facing upwards between them. In this way, it can be prevented that, for example, fluid leaks unintentionally if the removal system becomes defective.

In a further advantageous embodiment, the first holding device has a stamp element which has a smaller cross-section than a base body of the container. In this way, the container can be folded so that its inner volume is minimized as possible. This was in the above mentioned DE 10 2007 054 431 A1 explained.

In a further advantageous embodiment, in an initial state, a distance between the first holding device and the second holding device can be changed so as to be able to adapt to different containers. It would also be possible for the holding devices to be interchangeable or for adapter elements to be provided which allow adaptation to different containers.

Advantageously, at least one section between the two holding devices is formed without a housing. This means that at least a portion of the container to be compressed during the compression process is not surrounded by an immediately adjacent housing. Such an immediately surrounding housing would disturb the movements of the holding devices. While in the prior art housings are provided in many removal devices, which support the containers during their emptying, the Applicant has found that such housing, to which the container is directly applied, are not absolutely necessary.

In a further advantageous embodiment, the control device has a switching device which switches on or off the drive device in response to an internal pressure within the container. This may be, for example, a mechanical switch. So it is possible that the container pressure is readjusted when taking the liquid. Thus, it would be possible, for example, that the pressing force is applied via compression springs and / or readjusted via a two-point control. This will be explained in more detail with reference to the figures. It would also be possible that for a residual emptying of the pressure is largely or even completely drained.

The switching device may be a mechanical switching element. However, it would also be an electronic switch conceivable that reacts, for example, to a measured pressure. Advantageously, at least one holding device is resiliently mounted and particularly preferably connected to the switching device.

In a further advantageous embodiment, the removal device has at least one flexible conduit section. Advantageously, a flow rate change element is arranged on this flexible line section, for example a compression element which can reduce the line cross section.

In a further advantageous embodiment, a pressure sensor element is provided which detects an internal pressure in the container and the control device controls the drive device as a function of values which are output by this pressure sensor element.

In a further advantageous embodiment, it would also be possible for the pressure to be determined indirectly via a drive torque of the drive device and for the drive device to be switched off when a specific limit drive torque is exceeded.

In a further advantageous embodiment, the device has an actuatable valve for removing the liquid. Thus, for example, the device may have an outlet which, for example, is manually operable so as to remove the liquid from the container. As a result of such removal, the internal pressure in the container will change and the drive means In particular, continue with the compression of the container.

By a punch movement or a relative movement of the two holding devices towards each other, the pressure of the container is increased and by this pressure increase, the decrease amount can be specified. In a further advantageous embodiment, a pressure regulating valve can also be provided for this purpose. This pressure control valve can advantageously be a combination of a shut-off valve, a pressure regulator and a diffuser.

The above-mentioned flexible conduit means can be tightly squeezed off to shut off and be opened to remove the liquid, in particular only be opened so far that is reduced by a small opening of the container pressure to a desired flow rate. Furthermore, it is also possible for a tube cross section to expand starting from a throttle cross section in the length and shape of a diffuser.

In addition, it is also possible that a further, in particular separate, piston surface is provided for activating a closing mechanism.

In a further advantageous embodiment, the flexible conduit element or the hose is advantageously squeezed to the outlet during the closing operation so as to be able to express residual fluid. This serves, for example, as Auspresshilfe.

In a further advantageous embodiment, the device has a movement element, which moves the container relative to a holding device. In this movement element is in particular a moving element, which moves the container relative to the holding device when moving apart of the two holding devices. In this way, at least partial stripping of the container can be achieved, so that the container can be more easily removed from the holding device. Characterized in that a holding device has a smaller cross section than the main body of the container, this then penetrates when emptying the container in this. In order not to have to remove the container completely manually from this holding device, it is therefore proposed that by means of the movement element or stripping element in particular a backward movement of the holding device or a movement apart of the two holding devices is used to strip the container of the holding device.

In a further advantageous embodiment, the holding device is designed such that it can receive an opening region of the container. For this purpose, the holding device itself may have a recess, which is designed to receive the mouth region of the container.

In a further advantageous embodiment, the removal device has a piercing device for piercing at least one wall of the container or a container closure of the container. In particular, a piercing device is provided for piercing the container closure. In this way, the removal of liquids from standard containers can be made possible. Thus, for example, this lancing device may be formed as a tubular body with a cutting edge. In this embodiment, on the one hand, a removal of liquid from the container can be achieved, on the other hand, however, preferably also during the removal of a reliable seal the piercing device or the removal device relative to the container.

In a further advantageous embodiment, the removal device is integrated in one of the two holding devices. In particular, the removal device is integrated in that holding device which is provided for receiving the mouth region of the container. In this case, the removal device may be arranged on or particularly preferably within this holding device. Thus, a preferably central cavity can be formed in the holding device, in which the said piercing device and in particular also a pipeline is arranged.

The present invention is further directed to a method of withdrawing liquids from a container, wherein a container is provided with a first portion (of the container) on a first holder and with a second portion (of the container) which is spaced from the first portion , Is arranged on a second holding device, that the container is at least partially between this first holding device and the second holding device. Furthermore, a holding device is moved to the other holding device in order to deform the container and so as to reduce the inner volume of the container. In this case, liquid is removed from the container by means of a removal device (in particular during compression of the container).

Advantageously, the movement of the first holding device relative to the second Holding device controlled in response to an internal pressure of the container.

Advantageously, the container is standing upright and arranged with its mouth up between the holding devices.

In a further advantageous method, at least one holding device is substantially stationary. Advantageously, the upper holding device, which holds the mouth region of the container, is substantially stationary and the lower holding device is moved relative to the upper holding device.

Further advantages and embodiments will be apparent from the attached drawings:

Show:

1 a first schematic representation of a device according to the invention;

2 a schematic representation of a device according to the invention in a second embodiment;

3 a representation of the use of an upright container;

4 a representation of a partially emptied container;

5 a representation of an over-inserted container;

6 an illustration of an embodiment in which the first holding means comprises a receiving element;

7 Representation of another embodiment of a device according to the invention;

8th a representation of another embodiment, which additionally causes a reduction in the height of the device;

9 a representation of a removal device;

10 an illustration of an inserted into the container removal device;

11 a representation of a piercing operation;

12 a detailed representation of the removal device; and

13 a detailed view of the introduced into the container removal device.

1 shows a representation of a first embodiment of a device according to the invention 1 , In this case, the reference numeral refers 10 on a container to be emptied, this container has a floor area 10a and a mouth area 10b having. The reference number 30 indicates a closure of the container, which may be a standard closure. The reference number 10e shows a current folding area, where the container 10 is bent to remove fluid. In a relative movement of a first holding device 2 opposite a second holding device 4 will also be this folding area 10e postponed.

The reference number 40 indicates in its entirety a removal device to remove liquid from the container. This is a valve 52 provided and optionally a throttle body 56 who prefers this valve 52 upstream. The reference number 54 indicates an outlet for the liquid.

The reference number 42 indicates a lancing device, the container closure 30 can pierce.

The reference number 20 indicates in its entirety a control device for controlling the removal of the liquid from the container 10 depending on its internal pressure. This is a drive device 22 , as here an electric motor, provided, which, as indicated by the arrow P1, the first holding device 2 upwards and thus on the here secondarily arranged second holding device 4 can move. The first holding device 2 here has a recording device 24 for picking up the floor area 10a on. Furthermore, there are springs 28 provided, which the receiving device and a bottom plate 29 Press apart.

The reference number 32 indicates a switching element which can be switched when the receiving device 24 on the bottom plate 29 is moved. Depending on this switching element, the drive device 22 be switched on or off. Thus, a two-point control can be provided here, which depends on a pressure within the container 10 which is here as pressure on the holding device 2 affects, controls.

The reference number 16 indicates a movement device, which for removing the compressed container 10 from the second holding device 4 serves. These Movement device can, for example, fixed to the first movable holding device 2 be arranged. In a reverse movement of the first holding device 2 down this movement device comes into contact with the container 10 and pulls this at least partially from the second holding device 4 from.

Preferably, this movement device 16 therefore arranged movably and preferably at least temporarily with a movement of the first holding device 2 coupled. It would also be conceivable that the movement of the movement device only in a backward movement with the movement of the first holding device 2 is coupled. Preferably, the movement device is located 16 on the second holding device 4 , or their outer circumference. However, it would also be conceivable that a separate drive for moving the movement device is provided. It would also be conceivable that the movement device is manually movable. Also, the movement device could be designed as a relative to the second holding device displaceable ring.

At the in 1 As shown embodiment takes place a pressure-controlled decrease. 2 shows a further embodiment of the device according to the invention. In this embodiment, the removal device 40 a flexible conduit section 72 on, of a cross-sectional constriction element 74 which by a spring 76 is loaded, can be squeezed. Upon request, this item can 74 be slightly moved by the user, so as to move a liquid over the outlet 54 to omit (by an enlargement of the cross section of the line section 72 ).

The drive device 22 For example, it may be controlled in such a way that it only allows a maximum torque or drive torque and stops when this drive torque is exceeded. As soon as the pressure in the container drops, the engine becomes 22 or the drive device 22 move the first holding device upwards and thus further compress the container (whereby the internal pressure in the container rises again). Thus, even with this procedure decreases the decrease in the liquids, the internal pressure in the container, but it is more accurate, a volume-controlled decrease of the liquid.

The reference number 42 here again denotes the piercing body or the piercing device, which closes the container 30 can pierce. This piercing body is advantageously formed as a tube through which a liquid can flow.

3 shows a further schematic representation of a device according to the invention. As you can see, the container is inserted here upright. The second holding device 4 has a cavity or receiving space 62 within, within which a lead 64 for removing the liquid (but preferably also an orifice of the container 10 ) is arranged. This line 64 here also extends along the longitudinal direction L of the container 10 , One recognizes further that, to a basic body 10c of the container 10 around no housing is formed, or no wall on which this body portion 10c of the container can rest. In the embodiment shown here, the first holding device 2 on a bottom structure of the container 10 customized. However, this is not essential.

4 shows the device in a partially empty state of the container. At the same time, the puncture body first stands out 42 through the container closure 30 and is then introduced until the puncture body 42 is arranged with its entire cross section within the product or the liquid F. It is possible that with a movement of the piercing body 42 already the entire holding device 4 or the stamp 4 moved down. Preferably, however, these two bodies are arranged stationary.

This is how the container is made 10 here from the shoulder by a movement of the holding device 2 impressed, with particular preference is paid that in the field of refolding 10e no product, only air or gas.

By the holding device 4 But the punch remain the mouth and also the inner part of the container shoulder upright. It can be seen that the holding device 4 not only the mouth, but also a starting portion of the shoulder of the container takes up. Accordingly, the holding device to the area 4a the shoulder shape of the container 10 adapted and after impressions, the holding device or the stamp in mirrored form is formed such that the unwound distance of the container shoulder of the unwound punch shoulder 4a equivalent. Furthermore, it would be possible that the unwound punch shoulder is slightly shortened to pull the outside diameter easier inward.

As already mentioned move the punch (ie the holding device 4 ) and the support shell (the first holding device 2 ) relative to each other.

As mentioned above, the first holding device is preferred 2 moved and against the stationary holding device 4 pressed. This has the advantage that also the withdrawal facility 40 as well as possibly the tap can be arranged stationary.

5 shows an embodiment in which the container 10 is used overhead. In this case, only a puncture of the lancing device 42 necessary so that a corresponding opening is created to empty as much as possible. The mouth of the container is arranged here below.

In this embodiment, the container bottom is advantageous 10a curled into the container to also have the Börtelrand above, so that no product puddle results within the Börtelrandes so. In this variant, a very extensive residual emptying of the product can be achieved. The disadvantage here, however, that when removing the container 10 the container can dribble.

6 shows an embodiment in which the first holding device 2 a receiving element, which is adapted in terms of its shape to a container bottom, for example on a so-called Petaloidboden. This embodiment has the advantage that the container is very stable in the holding device 2 can be held.

7 shows a further embodiment of a device according to the invention. In this embodiment, the holding device 2 no receiving device, which is adapted to the shape of the bottom of the container. Rather, the container is pressed here in a different form. Thus, the container bottom between the first holding device 2 and the second holding device 4 , or between stamp 4 and the shell 2 reshaped. In this case, the bottom and the feet of the container 10 deformed or wrinkled so that the smallest possible cavity remains. This irregular configuration allows for the plastic material of the container. In other words, the bottom and the feet are brought into a suitable shape by the axial deformation force, the internal pressure of the container, and in particular by mechanical compression, around the container 10 best possible to empty. However, this requires relatively high pressing forces of the drive device (and / or a strong reduction ratio).

Depending on the design of the bottom of the container can be more or less press his feet. Limiting here is the thick-walled portion in the middle of the soil. The deformation of the shoulder of the container is applied to the thus formed bottom (or immediately before it) and there is a kind of annular channel in the middle of the bottom, in which the residual liquid flows when unloading the container towards the center. The lancing device 42 here advantageously extends to the bottom of the container.

8th shows a further embodiment, which additionally causes a reduction in the height of the device. In this embodiment, the second holding device 4 shorter than half the container length, for example in the range of the third container length. In addition, radially encircling projections or a collar 48 be provided, which cause the container not only to the fold shown in the above figures 10e is rolled, but in addition also a squeezing in the area 10g of the container. In this way, as mentioned, the punch length and thus the height can be reduced. More specifically, a reduction in the length of the second holding device 4 in the longitudinal direction L of the container by almost half possible.

Furthermore, it can be achieved in this way that the residual volume in the container is further reduced. Furthermore, with a gas in the container headspace, the liquid can be further pushed out.

If now the container 10 so far rolled that the deflected container wall at the end of the holding device 4 or at the federal government 48 pending, usually ranks of this covenant 48 a wave or a fold after the other. However, if the container wall is pushed together shapeless, but this is not disturbing.

9 shows a representation of a removal device 40 pointing to a container 10 , more precisely a container closure 30 is delivered. In this case, the removal device 40 a tubular body 64 through which liquid can be passed through. The reference number 94 indicates an end portion of the tubular body, which serves for piercing the container closure. For this purpose, the tubular body or tubular body 64 a circumferential edge 98 on, which is inclined here in relation to a longitudinal direction L, so first an area and then other areas of the container closure 30 to pierce.

The reference number 95 indicates a to the end portion 94 subsequent area of the tubular body 64 , One recognizes (cf. 12 ), that this end section 95 opposite this adjoining area 95 is formed tapered. Advantageously, this taper is formed circumferentially. The taper can be continuous starting from the adjoining area. The reference A denotes an angle of the taper or bevel with respect to the longitudinal direction L, this angle is preferred between 5 ° and 50 °, preferably between 5 ° and 40 °, preferably between 10 ° and 35 ° and preferably between 10 ° and 30 °.

10 shows a representation in which the removal device 40 in the container 10 is introduced. It can be seen that the piercing device or the peripheral edge 98 completely immersed in the liquid F. Subsequently, the container can be compressed from below and the liquid through the tubular body 64 be pushed out of the container and fed, for example, a tap. The peripheral edge is partly as a cutting edge 82 educated. The reference E denotes a plane in which the peripheral edge 98 or whose surface extends. The longitudinal direction L is obliquely opposite this plane E.

11 schematically shows the actual piercing process. It can be seen that here is the flexibility of the lid 30 or the lid surface 30a is used to bridge the piercing opening. The bevelled pipe 64 makes it easier to pierce the lid 30 , This is due to the outer slope, which in 12 is shown widened by the resulting bore and produces a cutting edge. Preferably, however, before the cutting operation is started, the edge of the tube completely seals against the lid surface 30a from. A radius or blunt edge section 84 an opposite side (see. 12 ) serves that the pierced middle part ( 30b ) does not get loose and gets into the container. A corresponding sharp-edged cutting edge 82 is needed so that the hole is cut and on the other hand no fibrous edges are created. In this way it can be prevented that such fibers get into the drink and later in the dispensing.

13 shows a representation of the hole, which in the closure 30 was stung. It can be seen that on the one hand an inwardly curved seal 30c is created, which is circumferential and at the same time dynamically seals. In this way it would even be possible for the tubular body 64 in particular in the longitudinal direction can be moved back and forth and a seal between the closure 30 and the outer periphery of the tubular body 64 arises, this seal is gas-tight and liquid-tight to push through and also manages without additional sealing elements. In addition, however, it would be possible to attach to a tubular body 64 to attach another sealant, such as a washer, to the tubular body 64 is arranged and additionally from above on the closure 30 suppressed, in which case additional sealing element, such as rubber seals, could be placed. Furthermore, it would also be possible, a seal, for example, with respect to the support ring 10f to reach the container.

Also the attached hole section 30b is not annoying for the seal. The Applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided they are novel individually or in combination with respect to the prior art.

LIST OF REFERENCE NUMBERS

1

contraption

2

first holding device

4

second holding device

4a

punch shoulder

10

container

10a

floor area

10b

mouth area

10c

body

10e

fold area

10f

support ring

10g

Squeezed area

16

mover

20

control device

22

driving means

24

recording device

28

feather

29

baseplate

30

container closure

30a

Cover surface of the container closure

30b

attached hole section

30c

sealing portion

32

switching element

40

removal device

42

piercer

48

Federation

52

Valve

54

outlet

56

throttle body

62

accommodation space

64

Pipe, tubular body

72

flexible line section

74

Cross section narrowing element

76

feather

82

cutting edge

84

dull edge section

94

End portion of the tubular body 64

95

to the end section 94 subsequent section

98

surrounding border

P1

Movement of the first holding device upwards

L

Longitudinal direction of the container

F

liquid

e

level

A

angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102007054431 A1 [0003, 0003, 0049, 0053]
• WO 9732807 [0004]
• US 2005/023307 A1 [0005]
• US 2003/0197022 A1 [0006]
• DE 102007054431 [0043]

Claims (11)

Withdrawal device ( 40 ) for the removal of liquids from plastic containers ( 10 ), the removal device ( 40 ) a tubular body ( 64 ), through which a liquid can be guided and wherein this tubular body is in an end portion ( 94 ) extends along a predetermined longitudinal direction (L) and at the end portion (FIG. 94 ) an at least partially circumferential edge ( 98 ) formed with a portion of the container ( 10 ) is brought into contact, wherein further at the end portion ( 94 ) a lancing device ( 42 ) for piercing a portion of the container ( 10 ), characterized in that the end section ( 94 ) one opposite a region adjoining the end section ( 95 ) has a tapered outer cross-section and the lancing device ( 42 ) in the longitudinal direction (L) with respect to at least one further section of the peripheral edge (FIG. 98 ) protrudes in such a way that during a delivery movement of the removal device ( 40 ) on the container ( 10 ) to the lancing device ( 42 ) the section of the container ( 10 ) contacted earlier than other areas of the perimeter ( 98 ). Withdrawal device ( 40 ) according to claim 1, characterized in that the peripheral edge ( 98 ) at least in sections as a cutting edge ( 82 ) is trained. Withdrawal device ( 40 ) according to claim 2, characterized in that the cutting edge ( 82 ) the lancing device ( 42 ) or is. Withdrawal device ( 40 ) according to claim 2, characterized in that the cutting edge ( 82 ) is formed along a circumferential angle which is between 10 ° and 350 °. Withdrawal device ( 40 ) according to claim 4, characterized in that the cutting edge ( 82 ) is formed along a circumferential angle which is greater than 20 °, preferably greater than 40 °, preferably greater than 100 °, preferably greater than 140 °, preferably greater than 180 °, preferably greater than 220 °, more preferably greater than 240 ° , more preferably greater than 300 ° and more preferably greater than 340 °. Withdrawal device ( 40 ) according to claim 4, characterized in that the cutting edge ( 82 ) is formed along a circumferential angle which is less than 340 °, preferably less than 300 °, preferably less than 240 °, preferably less than 220 °, preferably less than 180 °, preferably less than 140 °, preferably less than 100 °, preferably less than 40 ° Withdrawal device ( 40 ) according to at least one of the preceding claims, characterized in that the peripheral edge ( 98 ) a blunt edge portion ( 84 ) having. Withdrawal device ( 40 ) according to at least one of the preceding claims, characterized in that the peripheral edge ( 98 ) extends substantially in a plane (E) which is oblique to the longitudinal direction (L). Withdrawal device ( 40 ) according to claim 7, characterized in that the blunt edge portion ( 84 ) in a region of the peripheral edge ( 98 ), which holds the container ( 10 ) during a delivery movement of the removal device to the container ( 10 ) to the cutting edge ( 82 ) contacted. Withdrawal device ( 40 ) according to at least one of the preceding claims, characterized in that the removal device ( 40 ) is formed of a metal. Process for removing liquids from a plastic container ( 10 ), wherein a removal device a wall portion of the container ( 10 ) and then in the container ( 10 ) located liquid through the removal device from the container ( 10 ) is discharged. characterized in that first by means of a lancing device ( 42 ) a predetermined piercing region is pierced and then the removal device ( 40 ) in sections in the interior of the container ( 10 ), and wherein further by a feed movement of the removal device ( 40 ) on the container ( 10 ) to a seal between the removal device ( 40 ) and the container ( 10 ) is achieved.

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