EP3728051A1

EP3728051A1 - Packaging machine and method for introducing bulk materials into containers

Info

Publication number: EP3728051A1
Application number: EP18833410.6A
Authority: EP
Inventors: Klaus SIEWECKE; Willi Vollenkemper
Original assignee: Haver and Boecker OHG
Current assignee: Haver and Boecker OHG
Priority date: 2017-12-21
Filing date: 2018-12-17
Publication date: 2020-10-28
Also published as: US20200324928A1; BR112020012772A2; CN111741903A; WO2019121561A1; US11377238B2; CN111741903B; DE102017130958A1; EA202091261A1; CA3086597A1

Abstract

The invention relates to a packaging machine (1) and to a method for introducing bulk materials (2) into containers (3) by means of a rotatable machine body (4) and a plurality of filling nozzles (5) distributed over the periphery. During the rotation of the machine body (4), bulk material (2) is introduced into containers (3). A machine silo (6) having a storage volume (7) for storing a bulk material amount (8) for filling a plurality of containers (3) is formed on the machine body (4). From the machine silo (6), bulk material (2) is introduced via the filling nozzle (5) into the associated container (3). The machine silo (6) is connected to a material feed (10) having a controllable closure element (11), in order to feed bulk material to the machine silo (6). A control device (12) is provided, by means of which the closure element (11) of the material feed (10) is controlled in dependence on the fill level (13) in order to reduce a drop height of the bulk material (2) in the feeding of bulk material (2) into the machine silo (6) or to avoid a free fall of the bulk material (2) in the feeding of bulk material (2) into the machine silo (6) during continuous operation.

Description

Packing machine and process

for filling bulk goods in containers

Besehreibung

The present invention relates to a packing machine and a method for filling bulk materials in containers, wherein the

Packing machine arranged a rotatable machine body and a plurality of distributed over the circumference of the packing machine

Filler neck comprises, in order to fill in bulk goods during the rotation of the packing machine or the machine body. In this case, a machine silo with a storage volume for storing a quantity of bulk material for filling a plurality of containers is formed on the machine body. The bulk material is fed from the machine silo to the individual filler neck and filled into the associated or attached container.

In particular, the invention relates to a packing machine and a method for filling fine and dusty bulk materials, such as cement, mortar products, hydrated lime, etc.

In the prior art are a variety of packaging machines and

Method has become known to fill fine and dusty bulk materials such as cement in containers. When bottling

Bulk solids in containers such as open sacks or valve sacks are regularly added with a (small) amount of air to keep the bulk material flowing and to ensure efficient and efficient filling. Contains the bulk material to be filled during filling too little air, so the flowability decreases, the Bulk material may tend to form bridges and bottling conditions will deteriorate. If the bulk material contains too much air during filling, there is the disadvantage that after filling the filled containers are larger than they should be. The bleeding time increases, making the filling slower. In addition, they have only a low surface hardness.

Shaping and stable are filled with bulk goods container, which have a lower proportion of air. In addition, with less air, less material is needed for the packages or sacks, which reduces the cost of the packages. At the same time, the storage volume becomes smaller, which also reduces transport costs.

Therefore, containers filled with bulk goods are already vented at the time of filling or after, in order to remove at least part of the filled air again.

It turns out that the conditions at

Change the filling of bulk materials into containers during operation. So seasonal fluctuations can occur. Furthermore, the flow behavior of the bulk material may also depend on the ambient temperature and the ambient humidity. It has also been shown that after a standstill - so with stale product - the packing machine different filling conditions than during operation.

It is therefore the object of the present invention to provide a

Packing machine and a method for filling bulk goods in containers available, with which an efficient filling of bulk materials in containers is possible and thus more uniform filling results are achieved.

This object is achieved by a packaging machine with the features of claim 1 and by a method with the features of

Claim 20 solved. Preferred developments of the invention are subject of the dependent claims. Further advantages and features of the present invention will become apparent from the general Description and the description of the embodiment.

A packing machine according to the invention for filling bulk goods in containers is rotatable or has a rotatable machine body. Over the circumference of the packing machine or the machine body, a plurality of filler neck is arranged to fill in bulk goods during the rotation of the machine body. It is possible that the packing machine is designed to fill valve bags. It is also possible that the packing machine is designed to fill bulk goods in open-mouth bags or other containers. On the machine body is a machine silo with a storage volume for storing a quantity of bulk material for filling a plurality of containers

educated. In this case, from the machine silo on the filler neck or the filler neck in each case bulk material in the associated and in particular hanging container can be filled. The machine silo is connected to (at least) one material feeder with a controllable closure member to turn the machine silo

To supply bulk material. This means here that the machine silo is a kind of intermediate silo, in which a storage volume is designed to fill a plurality of containers. As a result, the bulk material does not have to be supplied from an external silo for every container. It is provided a control device, with which a level-dependent control of the closure member of the material supply takes place to a drop height of

To reduce bulk material in the supply of bulk material in the machine silo or to avoid a free fall of the bulk material in the supply of bulk material in the machine silo during continuous operation in particular largely and preferably largely as possible.

The packing machine according to the invention has many advantages. A significant advantage of the packaging machine according to the invention is that during continuous operation of the packing machine a free fall of the bulk material in the machine silo is largely or completely avoided or that the drop height of the free fall is reduced as much as possible. Also preferred is a Unterspiegelbefüllung, in which a free fall of the bulk material in regular operation practically does not occur. By the invention, the filled in the machine silo bulk material in all continuous operating cases is essentially the

have the same properties. The fact that only a small drop height is present and in particular a free fall is avoided if possible, the introduced into the bulk material during filling into the machine silo air is significantly reduced.

As a result, the bulk material in the machine silo much more uniform conditions than in the prior art, where at intervals bulk goods with a drop height of, for example, 1 m or 2 m height was filled into the machine silo (min-max control). Then could directly a bottling of the

Bulk goods in the container or it happened

For example, due to a machine maintenance, a standstill of the system, so that stored in the machine silo bulk material

could vent before the bottling was started. These different conditions also arise

different conditions of the filled containers. With the invention, such differences are considerably reduced. It ensures a continuous filling process and in particular also improves the weight accuracy. This also reduces the reject rate of wrong-weight bags.

In a conventional rotating packaging machine, the replenishment of the bulk material into the machine silo takes place in that the silo by the non-rotating lid in free fall in

Bulk material is fed to periodic intervals. This leads to a heavy dust formation during the catching period. As a result, a lot of air is absorbed in the bulk material, whereby its

Flow properties are changed. Besides that, though

Sealing measures are taken, discharged through the sealing gap between the rotating silo and the standing cover and existing cracks and openings a relatively large amount of dust. This will require a larger dedusting air quantity, thereby increasing equipment costs and operating costs. With the invention, when refilling into the silo no (or very little) air is added to the product, as a free fall of the bulk material is largely avoided. As a result, much more homogeneous conditions prevail in the (rotating) machine silo than in the prior art. It is temporal changes in product quality by the periodic entry of air during refilling avoided and it will also changes the product quality at a standstill reduced because the product contains less air and thus gives off over time.

A considerable advantage is also that the energy consumption is reduced by dedusting. Free-fall pack silos of the prior art are prone to dusting and must be vacuumed with a high volume flow to reduce the dust load. This also creates a significant loss of material.

In all embodiments, it is preferred that the machine silo, for example via product paths or delivery channels with the

Filler is connected. Preferably, a delivery member for (targeted) promotion of the bulk material in the associated or attached container is provided for each filler neck.

In preferred developments, the control device is designed as a passive control device. In particular, the control device can be designed mechanically.

In preferred developments, the closure member is coupled to a pivoting lever and / or a paddle. The pivot lever may in particular be mechanically coupled directly to the closure member. But it is also possible that the pivot lever via a deflection or a motor coupling with the

Closure member is coupled. It is also conceivable a hydraulic or pneumatic coupling, wherein the closure member

is pivoted for example via a pivoting cylinder with when the pivot lever is pivoted.

Preferably, the closure member comprises at least one

Iris mechanism. An aperture mechanism may, for. B. as

Flap mechanism be formed. It is possible z. Belly, that the aperture mechanism, a shutter or a

Closure flap or the like comprises. A shutter or the like may be in the closure member z. B. from the side and thus the free flow cross-section

reduce continuously or gradually.

The (mechanical) pivot lever is preferably provided to detect a level of the bulk material via a contact with the bulk material in the machine silo. In such embodiments, the pivot lever can serve as a simple passive control device. Due to the pivoting position of the pivot lever, a measure of the level is detected directly. Such a configuration allows a permanently functional and easy to maintain

Embodiment of a packaging machine according to the invention.

In the context of the present invention, the term

"Swing levers" are consistently replaced by the term "swivel part" or "swivel unit".

Preferably, the pivot lever is located (at least in part) on the bulk material in the machine silo (if the level is sufficient). It is possible and preferred that the pivot lever is at least partially immersed in the bulk material in the machine silo. The pivot lever slides in particular partially on the

Material level of the bulk material. The pivoting lever may slide in the manner of a "water ski" on the bulk material which is relative to the pivoting lever during rotation of the machine body

circularly moving product flow deflects the pivoting lever fitting, so that the position of the pivot lever is a measure of the

Level of the bulk material is. The pivot lever may form part of a sensor device. The sensor device serves to detect the fill level of the bulk material in the machine silo.

In preferred embodiments, a pivot axis of

Swiveling lever transversely and in particular off-center to a

Aligned axis of rotation of the machine body. For example, the pivot axis of the pivot lever can be aligned approximately horizontally be while the axis of rotation of the machine body is preferably oriented vertically. In preferred embodiments, the pivot axis of the pivot lever is in particular approximately radially

aligned, but may be inclined to the vertical. In

In preferred embodiments, the pivot axis lies approximately in a plane which encloses or is parallel to the axis of rotation.

Preferably, an angle at which the pivot axis intersects a plane with the axis of rotation of the machine body is <30 ° and preferably less than 15 °. By means of such parameters, an advantageous embodiment is achieved in which upon rotation of the machine body a resting on the bulk material or immersed therein pivot lever and thus a meaningful detection of the level allows.

It is also possible a vertical or a skewed pivot axis of the pivot lever z. B. on the utilization of a dynamic pressure and a return spring. For example, the dynamic pressure can be exploited on a paddle, which is biased by a return device and which is deflected with increasing level against the force of the restoring device and detects a measure of the level. Immediately with it can one

Closing member (mechanically) coupled, which controls the supply to the machine silo.

In preferred developments of the pivot lever is biased by a spring device in particular downwards. As a result, the pivot lever is reliably on the surface of

Bulk stock stored in the machine silo. Preferably, the spring device comprises at least one gas spring. A gas spring offers the advantage that when exceeding the

Spring force springing back is easily possible. In preferred embodiments, a piston-cylinder unit as

Spring device used or the spring device comprises at least one such piston-cylinder unit. About piston-cylinder units and a hydraulic or pneumatic coupling of the pivot lever with the closure member is possible. In all embodiments, it is preferred that the

Material supply includes a filling tube. Bulk material is fed through the filling tube to the machine silo. The filling tube preferably has a stationary tube part and a pivotable tube part. At the pivotable pipe part occurs

refilled bulk material.

The pivotable pipe part can preferably serve directly (also) as a pivoting lever. Then at least one molding and z. B. one (or two or more) wings trained or

be mounted to ensure a deflection of the pivotable pipe part depending on the level. A separate one

Swivel lever is then not necessary.

In other embodiments, a separate pivot lever is provided and the pivotable pipe part is pivotable together with the pivot lever. A common pivoting of the pivotable pipe part and the pivot lever can be realized that the pivotable pipe part and the

Swing levers are mechanically coupled directly.

For example, a chain drive or belt drive between the two pivotable parts may be provided. It is also possible a hydraulic or pneumatic coupling, so pivoted upon pivoting of the pivot lever and the pivotable pipe part with. By a spring device, it is also possible that, for example, the pivot lever pivots further than the pivotable pipe part.

It is preferred that on the pivotable pipe part the

Closing member is formed. The closure member may be formed, for example, as a closure flap.

It is also possible that the closure member has a correspondingly formed circular segment-like structure and pushes during the pivoting of the pivotable pipe part in front of the opening of the fixed pipe part and thus the free

Opening cross-section of the filling tube reduced or enlarged. Preferably, the material supply is fully open when the level is less than 30% or 40% or 50% or 60% or 70% of the maximum fill level. In particular, the

Swivel lever arranged so that the closure member the

(Feed opening of the) material supply at least then fully opens when the pivot lever is no longer immersed in the bulk material or the bulk material or no longer touches the product level. It is possible that the supply opening is fully opened when the level is less than 50% (or a

corresponding other value) of the maximum filling level.

Preferably, the material supply is at least partially

closed if the filling level is greater than 70% or greater than 80% or greater than 90% or 95% of the maximum filling level.

In particular, the pivot lever is arranged so that the

Material supply is at least partially or appropriately closed when the level reaches a corresponding proportion of the maximum filling height.

In advantageous developments, the closure member closes the feed opening of the material feed when the level reaches a predetermined height.

In all embodiments it is preferred that a free

Cross-section of the feed opening of the feed material is inversely proportional to the level. Also possible is a digital embodiment in which the free cross section of the feed opening is either completely open or completely closed. It is also possible that the free cross section of the feed opening of the

Material supply over a certain height range is inversely proportional. For example, it is possible that the

Feed opening over a certain height range is fully open and only begins to close when

For example, 50% (or 70% etc.) of the maximum fill level is achieved.

In all embodiments, it is preferred that at least one Non-contact detector for detecting the level is included. The non-contact detector may be part of the sensor device. Such a non-contact detector can be used as a capacitive, inductive optical and / or ultrasonic sensor and / or

Radar sensor or the like may be formed. It is also possible to use several detectors, each of which performs a level measurement independently of one another simultaneously or with a time delay. Such a non-contact detector or a contacting additional detector can be used to enable an active control. Such detectors are also possible to monitor the operation.

In an active control is preferably an actuator for

(Support the) movement of the closure member provided. Also possible is a purely active control.

In all embodiments, it is possible that the tax

Device in response to a sensor signal of the sensor device controls a position of the closure member (active).

An inventive method is used for filling bulk materials in containers with a packaging machine with a rotating

Machine body and a plurality of circumferentially spaced filler neck to during the rotation of the

Machine body to fill bulk material into containers. To the

Machine body is a (co-rotating) machine silo with a storage volume for storage of a bulk material formed, which is sufficient to fill a plurality of containers. The machine silo fills (via product passages or delivery channels) via the filling nozzles (specifically) bulk material into the containers. the

Machine silo is at least one supply of material associated with a controllable closure member to supply bulk material to the machine silo. The replenishment of the bulk material in the

Machine silo can be continuous. A

Control device controls depending on the level in the machine silo the closure member of the material supply to a free fall of the bulk material in the supply of bulk material in To avoid the machine silo during continuous operation or to reduce the drop height of the free fall as much as possible. In preferred developments and refinements, a type of submirror filling is made possible.

The method according to the invention also has many advantages. With the method according to the invention, the amount of air can significantly

be reduced, which is added to the bulk material during filling of the machine silo. This can be significant

more constant conditions for the filling of bulk materials in containers are provided.

Another advantage is that when replenishing the

Machine silos less dust is created, which must be dedusted consuming. This can reduce dedusting performance, saving energy and costs. Also, the seal between the rotating machine silo and the fixed lid can be made simpler.

Depending on the configuration, it is possible that at the first

Commissioning or after a product change considerable

Freefallstrecken arise at the first replenishment of the stock volume. Since such measures take place relatively infrequently and are of course known at the moment, this can be taken into account in the directly following bottling in order to achieve again constant conditions in the filled containers.

Further advantages and features of the present invention will become apparent from the embodiment, which will be explained below with reference to the accompanying figures.

In the figures show:

Figure 1 is a schematic sectional view of a

Packing machine according to the invention during the first filling with a bulk material to be filled; Figure 2 shows the packing machine of Figure 1 in a schematic sectional view in normal operation;

Figure 3 different positions of the material feed in the current

Business;

Figure 3 shows different cross sections of pipe parts of

Material feed;

Figure 4 is a highly schematic plan view of a

Machine silo with another material feeder; and

Figure 5 is a highly schematic cross-sectional view of

Machine silo according to FIG. 5.

FIG. 1 shows a packing machine 1 for filling bulk goods 2 in containers 3. The packing machine 1 is designed rotatable and has over its circumference a plurality of spaced-apart filler neck 5 to during rotation

Fill bulk material 2 in container 3.

Here in Figure 1, a valve bag is schematically shown as a container 3 in a schematic manner. But it is also possible that the packing machine is used for filling bulk material in open-mouth bags or other types of containers. Regularly, the container is attached to the filling of the bulk material to the filler and taken there tightly closed to prevent the escape of dust during the filling process.

During the filling of the bulk material 2 in the container 3 is on the product paths the bulk material 2 regularly added a small proportion of air to keep the bulk material 2 flowable and order

to set uniform and reproducible conditions during the filling process. The transport of the bulk material 2 in the container 3 is carried out regularly via a conveying member 9. Such

Conveyor can, for example, designed as a conveyor turbine his. However, it is also possible to use screw conveyors or conveyance by gravity or the use of others

Conveying organs.

Above the filler neck 5 and the conveying members 9 is here a machine silo 6 on the (rotatable) machine body. 4

educated. The machine silo 6 provides a storage volume 7 for receiving a quantity of bulk material 8. The storage volume 7 is greater than the volume of the largest possible to be filled with the packaging machine 1 container. In particular, the storage volume is several times greater than the volume of a filled container 3.

The quantity of bulk material 8 serves for intermediate storage of bulk material in order to provide continuous and uniform conditions within the packaging machine 1. As a result, a homogenization and a better consistency of the filling conditions can be achieved.

Same filling conditions are achieved here to a significantly improved extent, that the material supply 10 is controlled such that after the initial filling shown in Figure 1 only small (or virtually no or no) drop heights or even a Unterspiegelbefüllung done during operation.

The material supply 10 here comprises a closure member 11, which is designed as a type of flap mechanism 17.

The material supply 10 is formed by a type of stuffing tube 24, which has a fixed tube part 25 and a

pivotable pipe part 26 includes. The pivotable pipe part 26 is pivotable about the pivot axis 19. Depending on the swivel angle, the free cross sections of the fixed tube part 25 and of the pivotable tube part 26 are more or less aligned with one another and thus only release a part of the possible cross section of the feed opening 28.

As a result, the product spilling out of a storage silo accumulates in the fixed pipe part, which leads to a calming and venting. When "laying" the bulk material on the filling level or when introducing under the filling level so the ventilation of the bulk material (product) and dust in the

Machine silo drastically reduced. In addition, a much more homogeneous texture of the bulk material in the machine silo and during filling is ensured.

The cross section of the fixed pipe part 25 and the

pivotable tubular member 26 may be round, triangular, rectangular, polygonal, oval and / or rounded. The

Cross-sections can be adapted product-specifically. Through a targeted choice of cross sections of the pipe parts or a

In between insertable diaphragm or a valve can be taken into account specific properties of products.

In Figure 1, the state during the initial filling is shown, in which the level 13 is still far lower than the maximum filling level 27th

The pivot lever 16 is here part of a sensor device 18 or preferably forms the sensor device 18, the part of

Control device 12 is. Part of the control device is also the gas spring 22 of the piston-cylinder unit 23, with which the pivotable tube member 26 and the pivot lever 16 are biased in the illustrated lower position. When the level in the machine silo 6 continues to rise, the product level of the bulk material 2 reaches the lower edge of the pivot lever 16, which is subsequently raised by the bulk material 2 during the rotation of the machine body 4 by pivoting about the pivot axis 19. This will be the free

Reduces cross section of the feed opening 28, whereby the supply of bulk material 2 is reduced.

In Figure 1, an alternative (or additional)

Control device 12 dotted marked, which has a Drive has and is controlled by detectors 29 of the sensor device 18. The detectors 29 or at least one detector 29 detect the level 13 contactless and direct a

corresponding position of the closure member 11 from the

From measurement results to allow a Nachfuhr the bulk material 2 in the machine silo 6, in which as little air is supplied with. In such an alternative embodiment, no pivot lever 16 is necessary or provides a redundant emergency stop function available.

Figure 2 shows the packing machine 1 of Figure 1 in the normal

Operating condition after initial filling. Then one has

Level 13 is set, which is only slightly below the maximum level 27. In the illustrated state is the

Pivoting lever 16 partly on the surface of the bulk material 2 in the machine silo 6 on and immersed therein and was pivoted during the rotation of the packing machine 1 and the machine body 4 so that the pivotable pipe member 26 and the

fixed pipe part 25 are no longer aligned with each other, but are aligned with each other angled.

As a result, the closure member 11 has partially closed the supply opening 28, so that the further supply of bulk material 2 is reduced.

If the level 13 decreases again in the further operation, so by the weight and the force of the piston-cylinder unit 23, the pivot lever 16 back down

pivoted so that the closure member 11 of the material supply again releases a larger proportion of the feed opening 28, which again more bulk material 2 in the machine silo. 6

can be refilled.

If no bulk material is removed for filling, the level rises to the maximum and leads via a pivoting of the pivot lever 16 in the end position to the closure of

Feed opening 28. In all embodiments, the free fall height 14 of the newly supplied bulk material 2 in normal operation but always less than the diameter 15 of the pivotable tubular member 26th

Preferably, the free fall height is almost zero or a Unterspiegelbefüllung is realized. As a result, the absorption of air during the refilling of bulk material into the machine silo 6 is considerably reduced. Also the dust is reduced considerably.

FIG. 3 shows very schematically different positions of the closure member 11 of the material supply 10 in one embodiment

Embodiment in which a fixed tube member 25 and a pivotable tube member 26 are pivoted against each other and by the closure member 11 at different degrees of pivoting different free area proportions of

Feed opening 28 result.

In the upper part of FIG. 3, the state according to FIG. 1 is shown

shown. The level 13 in the machine silo 6 is still so small that the pivot lever 16 does not yet rests on the surface of the bulk material 2. Then the fixed ones curse

Pipe part and the pivotable pipe part with each other and release the maximum cross section of the supply port 28, whereby a maximum amount of bulk material 2 can be refilled into the machine silo 6.

In the middle of Figure 3, an intermediate state is shown, in which the level 13 has already risen so far that the pivot lever 16 rests on the surface of the bulk material 8 in the machine silo 6. The pivot lever 16 has been pivoted a piece, so that only a part of the free

Cross sections of the two pipe parts 25 and 26 are aligned. This results in the hatched illustrated free area of the feed opening 28. Such a state will be set regularly during operation. Because the free area of the

Feed opening 28 is less than in the upper part of Figure 3, only a small portion of bulk material can be refilled. But this part is enough to keep the refill what is filled on the other hand by the filler neck in the container and can compensate for fluctuations in the purchase quantity.

In the lower part of FIG. 3, a state is shown in which, for example, the maximum fill level 27 of the bulk material 2 in the machine silo 6 is reached. The pivot lever 16 is pivoted so far that the two pipe parts 25 and 26 not

aligned with each other, so that the closure member 11 of the material supply 10 has prevented the further supply of bulk material 2. This closed state of the closure member 11 remains in existence until the level 13 drops again. Then, the pivot lever 16 is automatically pivoted back and it opens again a part of the feed opening 28. By a shaping or matching design of the cam guide 30 of the pivotable pipe part it is raised in the end position and thus achieved a secure closure. The pivot axis 19 is spring-mounted for this purpose.

FIG. 4 shows further cross-sectional shapes of the pipe parts 25, 26 of the material supply. The pipe parts 25, 26 may each (or only one of the two) a z. B. triangular or square (or round, etc.) have cross-sectional shape. This allows the

Product supply can be adjusted as desired to ensure optimum supply of bulk material, as the hatched cross-section of the feed opening 28 shows.

Figures 5 and 6 show a highly schematic plan view and a highly schematic cross-sectional view of a machine silo 6 with a different material supply, in which case the pivot axis 19 is aligned parallel to the axis of rotation of the machine silo 6. Here agrees the pivot axis 19 with the axis of rotation of the

Machine silos 6 match. That does not have to be that way. The

Pivot axis 19 may also be arranged (slightly) off-center and does not have to be vertically aligned. At this

Embodiment is provided in the bulk material from above immersed paddle 33, which corresponds to the level height generates a corresponding dynamic pressure and thus pivoted against the force of the return spring 34 (or linearly deflected) is. As a result, a measure of the level can be detected. Here, the cross section of the feed opening 28 is directly influenced, so that the Nachfuhr of bulk material in the

Machine silo 6 is controlled. Through the cross sections of the

Closure organ can be made a corresponding control. It is possible that a slider is immersed or that a pipe part is moved or pivoted to the

Cross section to vary.

Overall, the invention offers many advantages, since in normal operation a significantly lower amount of dust is obtained, whereby only a significantly lower dedusting performance is needed.

This also requires less use of energy. In addition, more consistent and homogeneous conditions prevail during bottling, so that the bottling result is better.

This allows the containers to be reproduced and filled with even greater quality.

List of reference numbers:

1 packing machine 18 sensor device

2 bulk material 19 pivot axis of 16

3 bundles 20 rotary axis of 4

4 machine body 21 spring device

5 filler neck 22 gas spring

6 Machine silo 23 Piston-cylinder unit

7 storage volume 24 filling tube

8 Bulk solids 25 fixed pipe part

9 conveying member 26 pivotable pipe part

10 material feed 27 maximum filling level

11 closure member 28 feed opening

12 control device 29 detector

13 Level 30 Curve guide

14 height of fall 31 cover

15 diameter 32 sealing

16 swing lever 33 paddle

17 Shutter mechanism 34 Reset mechanism Flap mechanism

Claims

Claims :

1. Packing machine (1) for filling bulk materials (2) in containers

(3) having a rotatable machine body (4) and a plurality of distributed over the circumference

Filler (5) to during rotation of the machine body

(4) bulk material (2) in container (3) to be filled, wherein on the machine body (4) a machine silo (6) with a

Supply volume (7) for storing a quantity of bulk material (8) for filling a plurality of containers (3) is formed, wherein from the machine silo (6) via the filling nozzle (5) bulk material (2) in the associated container (3) can be filled, and wherein the machine silo (6) with a material feed (10) with a controllable closure member (11) is connected to the machine silo (6) to supply bulk material,

characterized,

a control device (12) is provided with which a control of the level dependent on the level (13)

Closure member (11) of the material feed (10) takes place to a drop height of the bulk material (2) in the supply of

To reduce bulk material (2) into the machine silo (6) or to avoid a free fall of the bulk material (2) when feeding bulk material (2) into the machine silo (6) during continuous operation.

2. Packing machine (1) according to the preceding claim, wherein the control device (12) as a passive control device

is trained.

3. packing machine (1) according to any one of the preceding claims, wherein the closure member (11) with a pivot lever (16) is coupled.

4. packing machine (1) according to any one of the preceding claims, wherein the closure member (11) has a shutter mechanism (17) such. B. includes a flap mechanism, a shutter or a flap.

5. packing machine (1) according to any one of the preceding claims, wherein the pivot lever (16) is provided for detecting a level (13) of the bulk material (2) via a contact with the bulk material (2) in the machine silo (6).

6. packing machine (1) according to one of the preceding claims, wherein the pivot lever (16) on the bulk material (2) in the machine silo (6) rests or in the bulk material (2)

dips.

7. packing machine (1) according to any one of the preceding claims, wherein a pivot axis (19) of the pivot lever (16) transversely to an axis of rotation (20) of the machine body (4) is aligned and wherein the pivot axis (19) of the pivot lever (16) in particular Off-center to a rotation axis (20) of the

Machine body (4) is aligned.

8. packing machine (1) according to one of the preceding claims, wherein the pivot lever (16) via a spring means (21) is biased.

9. packing machine (1) according to any one of the preceding claims, wherein the spring means (21) comprises at least one gas spring (22).

10. Packing machine (1) according to one of the preceding claims, wherein the spring device comprises a piston-cylinder unit (23).

11. Packing machine (1) according to one of the preceding claims, wherein the material supply (10) comprises a filling tube (24) having a fixed tube part (25) and a pivotable tube part (26), wherein the pivotable tube part (26) as

Swivel lever is used or together with the pivot lever (16) is pivotable.

12. Packing machine (1) according to one of the preceding claims, wherein at the pivotable tube part (26) the

Closing member (11) is formed.

13. packing machine (1) according to any one of the preceding claims, wherein the material supply (10) is at least then fully open when the pivot lever (16) is no longer immersed in the bulk material (2).

14. packing machine (1) according to any one of the preceding claims, wherein the closure member (11) closes the feed opening (28) of the material supply (10) when the filling level (13) reaches a predetermined height.

15. Packing machine (1) according to one of the preceding claims, wherein a free cross section of the feed opening (28) of the material supply (10) is inversely proportional to the level (13).

16. packing machine (1) according to any one of the preceding claims, wherein at least one non-contact detector (29) for

Detection of the level (13) is included.

17. packing machine (1) according to any one of the preceding claims, wherein the non-contact detector (29) is designed as a capacitive, inductive, optical and / or ultrasonic sensor and / or radar sensor.

18. Packing machine (1) according to one of the preceding claims, wherein an actuator (30) for movement of the closure member (11) is provided.

19. Packing machine (1) according to one of the preceding claims, wherein the control device (12) in response to a sensor signal of the sensor device (18) controls a position of the closure member (11).

20. Method for filling bulk materials (2) in containers (3) with a packaging machine (1) with a rotating machine body (4) and a plurality of circumferentially spaced filler (5) to fill during the rotation of the machine body (4) bulk material in containers (3), wherein on the

Machine body (4) a machine silo (6) with a

Reservoir volume (7) for storing a quantity of bulk material (8) is formed, which is sufficient to fill a plurality of containers (4), wherein the machine silo (6) via the filling nozzle (5) bulk material (2) into the container (3) fills, and wherein the machine silo (6) (at least) a material supply (10) is associated with a controllable (11) closure member to the machine silo (6) to supply bulk material (2), characterized

in that a control device (12) controls, dependent on the level in the machine silo (6), control of the

Closing member (11) of the material feed (10) controls to a drop height of the bulk material (2) in the supply of