EP3271251A1

EP3271251A1 - Filling apparatus

Info

Publication number: EP3271251A1
Application number: EP16706660.4A
Authority: EP
Inventors: Markus Schwarz
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2015-03-19
Filing date: 2016-02-29
Publication date: 2018-01-24
Anticipated expiration: 2036-02-29
Also published as: EP3271251B1; WO2016146366A1; DE102015204951A1; US20180079536A1

Abstract

The invention relates to a filling apparatus for filling containers (12a-d) with liquid and/or pasty materials, in particular for a packing machine (14a; 14d), having a metering apparatus (26a-d) having at least one metering pump (16a-d) having at least one metering stroke chamber (18a-d) having a stroke volume (24a-d) that can be varied by a metering piston (20a-d) in a piston stroke. According to the invention an overall stroke chamber (28a-d) of the metering apparatus (26a-d), comprising all metering stroke chambers (18a-d), corresponds at least to a multiple of a filling volume to be discharged to at least one container (12a-d) in one metering operation.

Description

description

filling

State of the art

There has already been proposed a filling device for filling containers with liquid and / or pasty substances for a packaging machine, with at least one metering pump having at least one metering stroke space with a metering piston which can be varied by a metering piston in a piston stroke.

Disclosure of the invention

The invention relates to a filling device for filling containers with liquid and / or pasty substances, in particular for a packaging machine, with at least one metering pump with at least one

Dosierhubraum with a variable by a metering piston in a piston stroke variable displacement metering device.

It is proposed that a total stroke space of the metering device comprising all metering stroke spaces be at least a multiple of one in one

Dosing to at least one container to be dispensed filling volume corresponds. In this context, a "container" is to be understood as meaning, in particular, a packaging container, such as a can, a bucket, a bottle or a vial, or preferably a bag, in particular a three-edge sealed bag, such as a tubular bag or a stick-pack, for example a four-edge sealed bag such as a sachet. A "metering pump" should be understood in this context to mean, in particular, a piston pump which is intended to deliver an adjustable amount of a substance. In this context, a "metering stroke space" is to be understood as meaning, in particular, the part of a space of the metering pump which can be changed by the piston stroke and which is delimited by the metering piston and intended to receive and / or discharge the substance to be filled In particular, the volume of the

Dosierhubraums be understood in the current piston stroke of the metering. The metering device may have one or more metering pumps. The metering device can be provided to fill a container or at the same time several containers in a metering process. In this context, the sum of all metering stroke spaces of the metering device is understood to mean at least a multiple of a filling volume to be dispensed into at least one container in a metering operation Preferably, the metering device delivers a partial volume of the metering device during each metering operation During each metering operation, each of the metering pumps preferably delivers a partial volume of their respective metering stroke space for filling the at least one container to be filled in this metering operation in this

Connection should be understood in particular a desired filling volume of the substance with which the container is to be filled. The metering device of the filling device may with the total stroke preferably a plurality of

Perform dosing in sequence. A suction process, which is intended to fill the total stroke space with the substance to be metered, can be between

Metering operations that are performed with a filling of the total stroke, eliminated. If the total stroke space is exhausted, a suction process can take place before the next dosing process and the total stroke space can be filled. If the metering device has a plurality of metering pumps, these can be filled simultaneously during the intake process. It may also be possible that the suction of the individual metering pumps takes place at different times. Dosing processes can be carried out in a particularly rapid sequence. A time window between two metering operations, which is required for a suction process, can be carried out in successive metering operations, which are carried out with a filling of the total stroke space. the, eliminated. A suction process can be carried out after two, preferably in each case after three, particularly preferably in each case after four or more metering operations. It can be done in a time interval especially many dosing. In particular,> 50, preferably> 80, particularly preferably> 100 doses per minute can take place. The metering device can be particularly powerful.

Furthermore, a filling unit connected to an outlet cross section of the metering device is proposed with a filling valve which is provided for selectively opening or closing a filling cross section of the filling unit. In this context, a "outlet cross section" is to be understood as meaning, in particular, a cross section through which the substance to be metered

Dosing device leaves. In this context, a filling unit is to be understood in particular to mean a device which is intended to fill the substance to be metered into a container. In particular, the filling unit may have a lance and / or a cannula, which is preferably partially inserted into a filling opening of the container to be filled. Preferably, the filling cross-section can be arranged at one end of the lance and / or cannula and can be closed by a valve cone of the filling valve, which is preferably designed as a needle valve. A dead space following the filling valve, in which the substance to be filled can accumulate uncontrollably after passing through the filling cross section and / or from which the material to be filled can drip, can be avoided. A closing of the filling valve between two

Metering operations may in particular a dripping and / or Nachfließen and / or a thread formation of the substance to be filled between two

Prevent dosing. Alternatively, a return stroke of the metering piston or the metering piston of the metering device can take place at least between successive metering operations without intermediate suction. A control unit may be provided to control the return stroke. In this context, a "return stroke" is understood to mean a movement of the metering piston or of the metering piston which causes an increase in the stroke volume., Preferably, the return stroke is less than 25%, particularly preferably less than 10%, of the filling volume of a metering process can in the filling unit of the filling cross section and / or of a Be withdrawn filling opening. A dripping or stringing of the substance to be filled between two dosing operations can be prevented.

In a further variant of the invention, a plurality of filling units connected to at least one outlet cross-section of the metering device and provided for simultaneous filling of a plurality of containers are proposed. A number of containers that can be filled in a period of time can be increased. The metering device may have a metering pump whose outlet cross-section is connected to a plurality of filling units. The metering device can preferably have a plurality of metering pumps, particularly preferably each

Filling unit have a metering pump. Preferably, a filling unit is connected to an outlet cross-section of the metering device. A

Metering accuracy of the filling device can be increased.

Preferably, the metering device has at least one switching valve which is provided to selectively connect the at least one metering stroke space with at least one inlet cross section or at least one outlet cross section. It may be provided a switching valve for a plurality of metering pumps. Each metering pump preferably has a switching valve. Preferably, the switching valve is designed as a rotary valve. The change-over valve can be particularly easily integrated into the metering stroke of a metering pump.

It is proposed that the filling device has a control unit which is provided to control a sequence of working cycles, each with a suction process to fill the stroke volume and a plurality of the following dosing operations following the suction process. Preferably, the control unit is at least partially designed as an electrical and / or electronic control unit. In particular, depending on a ratio of the total displacement and the filling volume to be dispensed in a metering operation, the control unit can determine which number of metering operations are permissible after a suction process.

Furthermore, a packaging machine is proposed for packaging liquid and / or pasty substances, in particular a bag machine, with at least one filling device according to the invention. The packaging The machine may be used to fill bottles, vials, buckets, cans and / or similar containers. The packaging machine is preferably provided for producing and filling tubular bags or stick packs or sachets, such as three-cornered and / or four-edge sealed bags. In this context, a "tubular bag" is to be understood as meaning a bag which is formed by forming a film tube by folding around a longitudinal axis and sealing a longitudinal seam from a film web, which is subsequently closed and severed in sections by transverse seals "Stick-Pack" should be understood in this context in particular an elongated in the direction of its longitudinal axis tubular bag. In this context, a "sachet" is to be understood in particular as meaning a bag which is formed by laying two film webs together and then applying four sealing seams along four edges, or a bag which is produced by folding a film web along one edge and then attaching at least three seams are formed along at least three edges Such tubular bags, stick packs and sachets are known in the art.

Preferably, the packaging machine has a control unit, which is intended, a container feed at least during one on one

Dosing process following slow suction. In this context, a "container advance" is to be understood as meaning, in particular, a rate at which containers to be filled are transported into a filling region of the filling device In this context, a "continuous container advance" is to be understood in particular to mean that containers are transported in a continuous movement to the filling area, moved further during filling and removed after filling. It may be possible that the movement is temporarily slowed down, in particular during filling, with speed changes preferably taking place continuously. In particular, the container feed can be formed in a bag machine by a film feed speed, with the one or more webs of material in a feed direction along the Filling area to be transported. A slowing down of the container feed "during an intake process following a metering operation" should be understood in this context to mean that a cycle time of the discontinuous container feed is prolonged, or a feed rate of a continuous container feed, at least following a metering operation followed by a suction process The time between two dosing operations can be advantageously compensated for in comparison to directly successive dosing processes by the suction process The containers can be operated at a dosing time in the filling area The performance of the packaging machine can be increased, it is proposed that the control unit of the packaging machine is provided to start a dosing operation depending on a closing operation of at least one container bottom of the respective at least one container to be filled in the dosing process. In this context, a "closing operation" of a container bottom should be understood to mean, in particular, a process in which a lower end in the direction of gravity of the container is closed

Container is closed so that no filled material escapes through the container bottom. In particular, the closing operation may be that a transverse sealing seam is applied to a film tube for forming a container. The container bottom can be closed as soon as the transverse sealing seam of the cross-sealing jaws of the packaging machine is pressed together.

In particular, it is advantageously not necessary to wait for completion of the sealing process. Preferably, the dosing process is started immediately after closing the container bottom. Particularly preferred is the

Metering started a short time after closing the container bottom. The period of time is preferably chosen so that it is closed until the time at which the product reaches the area of the container bottom. The dosing process can be started very early. The time from filling a container to filling the next container can be further reduced. The performance of the packaging machine can be further increased. Preferably, the control unit of the packaging machine is provided for, at least during at least one dosing and / or more

Dosage operations to adapt at least one Dosierkolbengeschwindigkeit to a container feed rate. Under one

In this context, "metering piston speed" is to be understood as meaning, in particular, a speed with which the at least one metering piston of the metering device is moved during metering in order to reduce the stroke volume In particular, the metering piston speed may be slowed down as the container advance speed is slowed down

Dosierkolbengeschwindigkeit is reduced. In particular, the control unit of the packaging machine can be provided to set the lowest possible metering piston speed. The control unit can the

Set metering piston in particular depending on a filling volume and / or the container feed speed. Cavitation effects, which can arise due to high flow velocities of the substance to be filled, can be reduced. The metering device can make particularly good use of a time window for filling which exists as a function of the container feed speed. Preferably, the packaging machine and / or the control unit has measuring devices to the

To detect metering piston speed and / or the container feed rate. The control unit can advantageously match the container feed rate and / or the metering piston speed with one another in a control loop with the aid of the measured values. Alternatively, the controller may control the tray advance speed and / or the metering piston speed. In this case, a movement in the feed direction and / or the at least one metering piston is advantageously driven by means of stepper motors, so that a defined control of the speeds is possible. Furthermore, a method is proposed for filling at least one container, with a filling device, in which at least one suction process of a metering device is followed by a plurality of metering operations for filling at least one container.

The filling device according to the invention and / or the packaging machine according to the invention should not be limited to the application and embodiment described above. In particular, the filling device according to the invention and / or the packaging machine according to the invention may have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein.

drawing

Further advantages emerge from the following description of the drawing. In the drawing, four embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

1 is a schematic representation of a detail of a packaging machine with filling devices according to the invention, FIG. 2 is a schematic representation of a working cycle with a

Suction process and two subsequent to the suction dosing,

Fig. 3 is a schematic representation of a metering pump one of

Filling devices of FIG. 1,

4 is a schematic representation of a filling device in a second embodiment,

Fig. 5 is a schematic representation of a filling device in a third embodiment and a schematic representation of a packaging machine with filling devices according to the invention in a fourth embodiment.

Description of the embodiments

Figure 1 shows a schematic representation of a section of a packaging machine 14a with filling devices 10a according to the invention for filling containers 12a with liquid and / or pasty substances, each with a metering pump 16a each with a Dosierhubraum 18a with a variable by a metering piston 20a in a piston stroke Stroke volume 24a having metering device 26a. The packaging machine 14a is multi-lane, i. in a width direction perpendicular to the illustrated drawing plane of Figure 1, several webs of containers 12a are filled next to each other, each web having one of the filling devices 10a. FIG. 1 shows one of these webs with a filling device 10a. A total stroke space 28a of a metering device 26a corresponds in each case to a multiple of a filling volume to be delivered to a container 12a in a metering process. The total stroke space 28a corresponds in the example shown, in which each

Dosing device 26a has a metering pump 16a, the respective

Dosierhubraum 18a of the respective metering pump 16a. In the example shown, the total stroke space 28a of a metering device 26a is more than twice as large as the filling volume to be delivered to a container 12a in a metering operation, so that two dosages each can take place before the stroke volume 24a of the metering pumps 16a again in a suction process be filled. Furthermore, the metering devices 26a each have a filling unit 34a with a filling valve 36a which selectively opens or closes a filling cross section 38a of the filling unit 34a. The filling valves 36a are each formed as a valve cone, not shown here, which opens or closes the respectively arranged at the ends of metering tubes 62a filling cross sections 38a, having needle valves. Valve needles of the filling valves 36a designed as needle valves are driven by a respective valve drive 30a. The filling valves 36a thus open and close the filling cross-sections 38a directly at the place of discharge of the substance to be filled from the filling unit 34a into the container 12a to be filled. The metering pumps 16a of the metering devices 26a also each have a switching valve 40a (FIG. 3), which is provided to selectively connect the metering stroke chamber 18a to an inlet cross section 42a or an outlet cross section 32a. The switching valve 40a is designed as a rotary valve and is driven by a valve drive 84a.

The packaging machine 14a is designed as a sachet machine, in the example for the production of four-edge sealed bags formed containers 12a. Two material webs 56a only indicated here are deflected around sealing rolls 66a of a longitudinal sealing unit 64a in the direction of gravity and transported downwards in a feed direction 58a. The longitudinal sealing unit 64a connects the two material webs 56a with two longitudinal sealing seams which are parallel to the feed direction 58a and are spaced by one bag width in the width direction of the packaging machine 14a, which delimit a container volume of the respective container 12a. The packaging machine 14a has for this purpose in

Width direction, a plurality of sealing rollers 66, which are each spaced in pairs by a bag width and are driven synchronously.

The continuous, that is continuous, movement in the feed direction 58a forms a continuous container feed 48a of the packaging machine

14a. The metering tube 62a extends in the region of the longitudinal sealing unit 64a with its filling cross section 38a between the material webs 56a forming the respective container 12a. In the feed direction 58a below the longitudinal sealing unit 64a is a transverse sealing unit 68a. The transverse sealing unit 68a has two transverse sealing jaws opposite one another with respect to the material webs 56a

70a, which are drivable in a direction perpendicular to the feed direction 58a in the direction of the material webs 56a. When the transverse sealing jaws 70a are pressed against the material webs 56a, a transverse sealing seam 72a is formed under the action of pressure and heat, which forms a container bottom 50a of the respective container 12a. The transverse sealing unit 68a is in and opposite to

Feed direction 58a movably mounted and is moved during the Siegeins in the feed direction 58a in synchronism with the container 12a and moves between the sealing operations in a feed direction 58a opposite movement back to an initial position. Thus, a relative speed of the transverse sealing jaws 70a to the container 12a in Vorschubrich- tion 58a are avoided and the container feed 48a can take place continuously. In the advancing direction 58a below the transverse sealing unit 68a, there is a separating unit 74a with two rotating transverse knives 76a which separates the individual containers 12a forming a contiguous container chain up to this time. Alternatively, it may also be possible for the transverse knives 76a to produce only perforation lines at which the containers 12a can be easily separated by tearing off the container chain if necessary.

The filling devices 10a, the longitudinal sealing units 64a and the transverse sealing units 68a of the packaging machine 14a are driven synchronously. The

Filling devices 10a each have a reservoir 78a, which is connected via a hose to the inlet cross section 42a of the respective metering pump 16a. The metering pumps 16a each have a pump drive 80a, which moves the metering piston 20a of the metering pump 16a. From the outlet cross-section 32a of the respective metering pump 16a, a further hose leads to the respective metering tube 62a with the filling cross-section 38a of the respective filling unit 34a. The filling units 34a are displaceably mounted in and against the feed direction 58a by a drive unit 82a. A position of the filling units 34a in the feeding direction 58a can thus be optimally adjusted to a size of the containers 12a to be filled. It may also be possible for the filling units 34a to be driven by the drive unit 82a in the feed direction 58a during the metering process. This can in particular facilitate the filling of the containers, if they are not moved away during the filling as in the example shown in the feed direction of the filling unit.

The packaging machine 14a has a control unit 46a, which is provided to slow down the container advance 48a during an aspiration process following a dosing process. The control unit 46a of the packaging machine 14a also has control units 44a of the filling devices 10a in the example shown. Alternatively, it is also possible that the control units 44a, 46a are formed separately. The control units 44a are provided to control a sequence of working cycles of the filling devices 10a, each with a suction process to fill the total stroke space 28a and a plurality of the following dosing operations following the suction process. The control unit 46a is provided to start a dosing operation depending on a closing operation of the container bottoms 50a of each to be filled in the dosing process container 12a to start.

The control of the packaging machine 14a and the filling devices 10a by the control unit 46a during a working cycle is shown in FIG. 2:

FIG. 2.1 shows along a time axis t the stroke volume 24a set by the piston stroke between the values "0" (minimum stroke volume 24a) and "1" (maximum stroke volume 24a). FIG. 2.11 shows over the time axis t the position of the switching valve 40a between the positions "E" (connection of the

Dosing stroke space 18a with the inlet cross-section 42a) and "A" (connection of the dosing stroke space 18a with the outlet cross-section 32a.) Figure 2. III shows over the time axis t the position of the filling valve 36a between the positions "O" (open) and "G" ( Figure 2.1V shows over the time axis t a container advancement speed 54a between the values "S" (fast) and "R" (reduced) Figure 2.V shows over the time axis t the position of the transverse sealing jaws 70a of the transverse sealing unit 68a between the positions "O" (open) and "G" (closed) First, the switching valve 40a is set to the position "E" (inlet section 42a) (Figure 2. II).

At a time ti, when the switching valve 40a reaches the position "E", the suction process in which the metering piston 20a starts with a

Dosierkolbengeschwindigkeit 52a is moved in a suction direction, which is chosen so that the stroke volume 24a increases (Figure 2.I). At the same time, the container advancing speed 54a is reduced to the value "R".

At a time t ₂ at which the stroke volume 24a reaches the value "l" and the total stroke space 28a or the Dosierhubraum 18a is completely, or alternatively filled with a set set amount, the movement of the metering piston 20a is stopped, the container feed rate 54a begins to accelerate the value "S" and the switching valve 40a is moved in the direction of the position "A" (outlet section 32a). At a time 3, the first dosing begins. At this time, the filling valve 36a is in the "O" position (Fig. 2. III), and the transverse sealing unit 68a is in the "G" position, so that the container bottom 50a of the container 12a to be filled is closed and the metering piston 20a becomes with the

Dosierkolbengeschwindigkeit moves 52a in an ejection direction, which is chosen so that the stroke volume 24a decreases. The movement of the filling valve 36a into the "O" position and the movement of the transverse sealing unit 68a into the "G" position already start at a point in time 3 shortly before the point in time 3. The preprocessing time with which these movements are started depends on a switching time required to move the filling valve 36a from the position "A" to the position "E" and to move the transverse sealing unit 68a from the position "O" to the position "G".

At a time t4 at which the filling volume to be delivered to the container 12a is reached, the movement of the metering piston 20a is stopped and the

Filling valve 36a is closed in the position "G." As an alternative to closing the filling valve 36a, a return stroke of the metering piston 20a can also take place in order to prevent dripping of the substance to be filled into the container is started before the time I4, which is dependent on the switching time of the filling valve 36a. The transverse sealing unit 68a is already in the position "O" (open) again at the time I4. The time period in which the transverse sealing unit 68a remains in the position "G" between the time point 3 and the time point I4 depends on a sealing time, which is needed to form the transverse sealing seam 72a.

At a time t ₅ , a further dosing process is carried out, which corresponds to the dosing process at time 3. The period of time with which the further dosing operation is started after completion of the preceding dosing operation depends on the time required to bring the next container 12a into a position in which the dosing process can be started with the container advance speed 54a ,

At a time t ₆ , the further dosing process is completed. It starts after a short period of time dependent on the container advance speed 54a at a time ti ', the intake cycle of a next cycle. The control unit 46a is further provided to adjust the metering piston speed 52a to the container advance speed 54a during metering operations. If the container advancing speed 54a is reduced during the dosing operation, for example by an external engagement, the metering piston speed 52a is also proportionally reduced. Likewise, the tray advance speed 54a is reduced if the

Dosierkolbengeschwindigkeit 52a is reduced during the dosing. The packaging machine 14a can advantageously have an adjustable machine speed, with which a user or even a forward and / or downstream process can determine which number of containers 12a is to be filled in a time interval. A change in this machine speed causes a change in the container feed rate 54a and thus the Dosierkolbengeschwindigkeit 52a. In addition, the metering piston speed 52a is set by the control unit 46a in such a way that a time window for filling the respective container 12a fixed with the container advance speed 54a is used as completely as possible. In particular, unnecessarily high metering piston speeds 52a are thus avoided. In order to control the bin advancing speed 54a and the metering piston speed 52a, the control unit 46a has measuring means for measuring the bin advancing speed 54a and the metering piston speed 52a.

FIGS. 4 to 6 show three further exemplary embodiments of the invention. The following description and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle to the drawings and / or the description of the other exemplary embodiments, in particular FIGS. 1 and 2, with respect to components designated the same to 3, can be referenced. To distinguish the embodiments of the letter a is the reference numerals of the embodiment in the figures 1 to 3 adjusted. In the exemplary embodiments of FIGS. 4 to 6, the letter a is replaced by the letters b to d. FIG. 4 shows a schematic illustration of a filling device 10b in a second exemplary embodiment. The filling device 10b differs from the filling device 10a in particular in that a metering device 26b has two metering pumps 16b and two filling units 34b for filling a container 12b. A total stroke space 28b of the filling device 10b is the sum of metering stroke spaces 18b of the metering pumps 16b. Dosing piston 20b of

Metering pumps 16b, switching valves 40b of the metering device 26b and filling valves 36b of the filling units 34b arranged on filling cross sections 38b are each actuated synchronously.

FIG. 5 shows a schematic representation of a filling device 10c in a third exemplary embodiment. The filling device 10c differs from the filling device 10a in particular in that a metering device 26c has a metering pump 16c with a total lifting space 28c and a switching valve 40c and two filling units 34c with filling cross sections 38c connected to an outlet cross section 32c of the metering device 26c of the filling device 10c for simultaneously filling two containers 12c. The filling device 10c can be particularly cost-effective, since only a small number of metering pumps 16c is required.

FIG. 6 shows a schematic representation of a packaging machine 14d with four filling devices 10d according to the invention for filling containers 12d with liquid and / or pasty substances, each with a metering pump chamber 18d forming a total lifting space 28d with a metering stroke chamber 18d with a metering piston 20d a piston stroke variable stroke volume 24d and a switching valve 40d having metering device 26d in a fourth embodiment. The packaging machine 14d differs from the packaging machine 14a in particular in that it is designed as a four-lane tubular bag machine, in the example for the production of containers 12d designed as so-called "stick packs." A material web 56d only indicated here is deflected in the direction of gravity, in FIG a feed direction 58d transported down and cut by three not shown here cutting knife in the feed direction 58d so that the material web 56d forms four equal width partial webs, each one of Filling devices 10d are supplied. A movement in the feed direction 58d forms a container feed 48d of the packaging machine 14d. From each partial web of the material web 56d, a film tube 60d is formed in each case. For this purpose, the respective partial path of the material web 56d is turned over by a forming shoulder (not shown here) and a metering tube 62d of the respective filling unit 34d. A longitudinal sealing unit 64d seals the two layers of material abutting each other by folding the partial web of the material web 56d, using pressure and heat, to form the film tube 60d. In the feed direction 58d below the longitudinal sealing unit 64d is a transverse sealing unit 68d. In the case of a sealing process, the transverse sealing unit 68d forms in each case a transverse sealing seam 72d, which forms a container bottom 50d of the respective container 12d. The container feed 48d is clocked, ie the movement in the feed direction 58d is stopped briefly when attaching the transverse sealing seam 72d. The transverse sealing unit 68d simultaneously forms a transverse sealing seam 72d forming the container bottom 50d of the respective container 12d to be filled, as well as a further transverse sealing seam closing the container 12d in the feed direction 58d. The transverse sealing unit 68d here has transverse knives not shown in greater detail, which cause the containers 12d following in the feed direction 58d to be separated from the film tube 60d when forming the transverse sealing seams 72d. The other functions of the packaging machine 14d and the filling device 10d correspond to the packaging machine 14a and the filling device 10a of the first embodiment.

Claims

claims

1. filling device for filling containers (12a-d) with liquid

and / or pasty substances, in particular for a packaging machine (14a; 14d), having at least one metering pump (16a-d) with at least one metering stroke space (18a-d) with a stroke volume variable by a metering piston (20a-d) in a piston stroke (24a-d) having metering device (26a-d),

characterized in that

a total stroke space (28a-d) of the dosing device (26a-d) comprising at least a multiple of a filling volume to be dispensed into at least one container (12a-d) in a dosing operation, comprising all dosing lifting spaces (18a-d).

2. Filling device according to claim 1, characterized by at least one with an outlet cross-section (32a, 32c) of the metering device (26a-d) connected filling unit (34a-d) with a filling valve (36a, 36b), which is provided to a filling cross-section ( 38a-c) of the filling unit (34a-d) optionally open or close.

3. Filling device according to claim 1 or 2, characterized by a

A plurality of at least one outlet cross section (32c) of

Metering device (26c) of connected filling units (34c) provided for simultaneously filling a plurality of containers (12c). Filling device according to one of the preceding claims, characterized in that the metering device (26a-d) has at least one switching valve (40a-d), which is provided, the at least one Dosierhubraum (18a-d) optionally with at least one inlet cross-section (42a) or at least one outlet cross-section (32a; 32c) to connect.

Filling device according to one of the preceding claims, characterized by a control unit (44a), which is intended to control a sequence of working cycles, each with a suction to a filling of the total stroke space (28a-d) and a plurality of the following dosing operations on the suction.

Packaging machine for packaging liquid and / or pasty substances, in particular a bag machine, with at least one filling device (10a-d) according to one of the preceding claims.

Packaging machine according to Claim 6, characterized by a control unit (46a) which is provided for slowing down a container advance (48a, 48d) at least during an intake operation following a metering operation.

Packaging machine at least according to claim 6, characterized in that the control unit (46a) is provided to start a metering operation depending on a closing operation of at least one container bottom (50a, 50d) of each at least one in the

Dosing to be filled container to start (12a-d).

Packaging machine at least according to claim 6, characterized in that a control unit (46a) is provided, at least during at least one metering operation and / or more

Dosage operations at least one Dosierkolbengeschwindigkeit (52a) to a container feed speed (54a) adapt. Method for filling at least one container (12a-d), with a filling device (10a-d) according to at least one of claims 1 to 5, characterized in that at least one suction process of a metering device (26a-d) a plurality of metering operations for filling at least one container (12a-d) connects.