ES2753635T3 - Device and procedure for transporting and filling bags - Google Patents

Abstract

A device for transporting and filling bags (1), preferably open-mouth bags, comprising a filling device (2) rotatable about an axis of rotation (10) with a plurality of filling openings (15) distributed on the circumference of the filling device, where to compact the bulk material in the bags (1) a vibrating plate (8) is arranged below at least one filling opening (15), seen from the filling opening is inclined outwards, so that the filled bags (1) rest on the vibrating plate (8), characterized in that, in an end section of the vibrating plate (8), which is remote from the filling opening (15), an element of support movable with respect to the filling opening, to support in the bottom area a full bag (1) resting on the vibrating plate, because a flap (24) is rotatable towards the opening as a support element filling, and po r that the flap (24) forms a plane with the support surface of the vibrating plate (8) for the bag (1) in a first folded position away from the filling opening.

Description

DESCRIPTION

Device and procedure for transporting and filling bags

Field of the Invention

The present invention relates to a device for transporting and filling bags, preferably open-mouth bags, comprising a filling device rotatable about an axis of rotation with a plurality of filling openings distributed over the circumference of the filling device, where To compact the bulk material in the bags, a vibrating plate is arranged below at least one filling opening, which, when viewed from the filling opening, tilts outward, so that the filled bags rest on the vibrating plate, as well as a corresponding procedure.

State of the art

Various devices for transporting and filling bags are known from the state of the art. Among other things, these devices are also used to fill open bags, called open-mouth bags, with bulk material. To increase the performance of such devices, swivels are often designed, with fixing units, which serve to secure the sacks around the filling openings (as in a filling neck) or below the filling openings, being arranged rotating around a rotating column. The empty bags are transported from and received by the feeder to the filling device. After attaching the bags to the filling openings by means of fixing units, the bags are filled and subsequently transported by rotating the filling device until a bag removal device removes them from the filling device again.

According to DE 34 16155 A1, it is known that a so-called side vibrator is provided for each filling neck to compact the bulk material in the bags. These lateral vibrators are attached to the rotating column of the filling device and can be rotated so that the supporting surface of the lateral vibrator is tilted outwards as seen from the filling neck, so that the filled bags are held in the neck fillers rest in an oblique position on the vibrating plate.

However, this device has the disadvantage that the bag material is considerably stretched by the weight of the full bag, since the vibrating plate offers little support to the bag due to its unique slightly oblique arrangement.

Object of the invention

Therefore, an object of the present invention is to relieve the material from the filled sacks.

Description of the Invention

According to the invention, therefore, in a device for transporting and filling bags, preferably open-mouth bags, comprising a filling device rotatable about an axis of rotation with a plurality of filling openings distributed over the circumference of the a filling device, where to compact the bulk material in the bags a vibrating plate is arranged below at least one filling opening, which, when viewed from the filling opening, is tilted outwards, so that the filled bags rest on the vibrating plate, in an end section of the vibrating plate, which is remote from the filling opening, a support element is arranged movable with respect to the filling opening, to support in the ground area a full bag resting on the vibrating plate.

In general, each filling opening is assigned its own vibrating plate, whereby a vibrating plate is provided below each filling opening. This support element, in the state of displacement towards the filling opening, is used to relieve the bag material and, therefore, causes a bulging of the bag, which in turn provides a better filling and, therefore, a reduction in the degree of filling.

As a supporting element, a rotating flap is provided with respect to a filling opening. Thus, since the flap is rotatable, it can be removed when an empty bag is fed with the filling device and / or when the full bag is removed from the filling device from the movement area of the empty or full bag, of so that the feeder and / or the bag removal device can perform the same movements that are possible even with a vibrating plate without a flap. Existing filling devices can also be equipped with a flap according to the invention.

In most cases, the vibrating plate will have a greater length (measured parallel to the axis of rotation of the filling device) than the width (measured in the circumferential direction of the axis of rotation of the filling device). The length is best dimensioned, in this case, to achieve the best possible compaction, so that the bag attached to the filling opening or in the filling neck rests to its bottom on the vibrating plate.

The vibrating plate can be designed as a unit that forms a single continuous support surface for the bag. However, the vibrating plate may also consist of a plurality of independently operable units, which then form a support surface subdivided into a plurality of individual plates for the bag.

The inclination of the vibrating plate, more specifically of the supporting surface of the vibrating plate, with respect to the axis of rotation of the filling device, is approximately 10 ° to 20 ° and can be, for example, 15 °. The inclination of the vibrating plate can be basically adjustable. But since a filling device generally conforms to a particular bulk material and to certain bags, the inclination need not necessarily be adjustable, but can be provided in a fixed manner.

In order to avoid an interruption of the filling operation by the flap, it is provided that the flap in a first folded position outside the filling opening forms a plane with the support surface of the vibrating plate for the bag.

Therefore, a particularly good support of the filled bag results when the flap forms a right angle with the support surface of the vibratory plate for the bag in a second folded position towards the filling opening.

Instead of a fin, which is not within the scope of the invention, the support element can be moved linearly towards the filling opening, in particular, parallel to the support surface of the vibrating plate. As a result, when an empty bag is fed with the filling device and / or when the full bag is removed from the filling device, the support element can be pulled down from the movement area of the empty bag or filled from the opening of the filling, so that the feeder and / or the bag extraction device can (n) perform the same movements that are possible even with a vibrating plate without support element. The existing filling devices could also be equipped with said support element.

Furthermore, the linearly movable support element can be adjusted to different bag sizes, more precisely, to the length of the bag. For shorter bags, the support element to hold the filled bag further towards the filling opening, that is, upwards, moves as for longer bags.

In the event that the support element can move linearly, it is provided that the support surface of the support element forms a fixed angle, in particular a right angle, with the support surface of the vibrating plate. Therefore, rotating parts are not required in this embodiment. However, it would be conceivable the additional linear displacement of a rotating fin or of a support element that can also be displaced linearly relative to the filling opening and that can rotate away from the filling opening.

The method of transporting and filling bags, preferably open-mouth bags, with a device according to the invention provides for a feeder to feed an empty bag through a filling opening. In this case, it is provided that the support element is, during the feeding of the empty bag, in a first position remote from the filling opening, and that the support element is in a second position closer to the filling opening, at the latest when the bag is full. In this way, it is ensured that the empty bag does not catch on the support element when it is placed in the filling opening. This also ensures that the completely full bag is supported.

In particular, during feeding of the empty bag, the flap can be located in a first folded position away from the filling opening, and the flap can be transferred to a second folded position towards the filling opening, at the latest when the bag has been filled. If the support element can be displaced linearly, the support element can be located during the feeding of the empty bag, in a first position remote from the filling opening, and it can be moved at the latest in a second position closer to the opening of filled, when the bag is full.

To support the bag even during filling, provision can be made that the support element has already been transferred during filling of the bag to the second position closest to the filling opening. In particular, it can be envisaged that the flap has already been transferred during the filling of the bag in the second folded position to the filling opening.

An embodiment of the invention establishes that the support element is removed from the second position once it is reached again and moves to the first position, and is transferred again to the second position. In this way, the pressure of the support element, in particular of the flap, towards the bottom of the bag to be filled or of the full bag is produced, which can also contribute to the compaction of the bulk material in the bag.

In particular, it can be envisaged that this procedure is repeated several times, that is, that it is pressed several times. the support element, such as the fin, towards the bottom of the bag.

In order that the procedure of removing the full bag from the filling device is not affected by the support element, it can be provided that the support element, in particular the flap, is transferred to the first position again before removing the full bag. .

Brief description of the figures

The invention is explained in detail below by means of an exemplary embodiment. The drawings are by way of example and should state the ideas of the invention, but in no way limit or reproduce them conclusively.

In this case, they show:

Figure 1 shows a general view of a device according to the invention in a perspective view from above, to Figure 2 the device when collecting a bag in a perspective view,

to figure 3 the device when picking up a bag in plan view,

to figure 4 the device when picking up a bag in the side view,

una vista en perspectiva, a figura 6 el dispositivo después del giro hacia arriba de un saco en la vista en planta, a figura 7 el dispositivo después del giro hacia arriba de un saco en una vista lateral, a figura 8 el dispositivo al colocar un saco en la abertura de llenado en una vista en perspectiva,to figure 5 the device after the upward turn of a bag in

a perspective view, to figure 6 the device after the upward rotation of a bag in plan view, to figure 7 the device after the upward rotation of a bag in a side view, to figure 8 the device when placing a sack in the filling opening in a perspective view,

to figure 9 the device when placing a bag in the filling opening in plan view,

to figure 10 the device when placing a bag in the filling opening in a side view,

to figure 11 the device when filling a sack in a perspective view,

to figure 12 the device when filling a sack in plan view,

to figure 13 the device when filling a bag in a side view,

a figure 14 shows the device during retraction of the bag extraction device in a perspective view, a figure 15 shows the device when retracting the bag extraction device in plan view,

to figure 16 the device when retracting the bag extraction device in a side view,

Figure 17 shows a perspective view of the device before removing the filled bag,

Figure 18 shows the device before removing the filled bag in plan view,

Figure 19 the device before removing the filled bag in a side view,

FIG. 20 shows the device after the backwards rotation of the bag extraction device in a perspective view,

FIG. 21 the device after the rearward rotation of the bag removal device in plan view, FIG. 22 the device after the rearward rotation of the bag removal device in a side view, FIG. 23 the device with the mounted guide of the second bracket in a perspective view,

24 shows the complete view of the supports according to FIG. 8.

FIG. 25 shows the complete view of the supports according to FIG. 9.

Modes of carrying out the invention

Figure 1 shows an overview of a device according to the invention for transporting a bag 1. The device comprises a filling device 2, the filling openings of which are formed by filling necks 3. Above each filling neck 3 , a hopper 4 is arranged, on which a device, not shown, with bulk material acts. The device further comprises a feeder, which is here composed of a holding device 5 and a pivoting device 6. The device also comprises a bag removal device 7 for removing a full bag from the filling opening of the filling neck 3. Beneath each filling opening or below each filling neck 3 is provided a vibrating plate 8 arranged obliquely down, on which the filled sacks 1 rest. By shaking the vibrating plate 8, the bulk material is compacted within the bag 1. In addition, a rotating flap 24 is provided to support a full bag 1 on the vibrating plate 8 over the bottom area.

The flap 24 is arranged at the lower end of the vibrating plate 8, specifically pivotally mounted. In Figure 1, the flap 24 is folded down, and in this case, it can be located, for example, in the same plane as the support surface of the vibrating plate 8. This flap 24 is used in the folded state, where it is, for example, approximately normal to the vibrating plate 8, but, in any case, in order to relieve the material of the bag from the full bag 1. The flap 24 can also help to compact the bulk material in the bag 1 .

Instead of the flap 24, a plate could also be provided that can move parallel to the vibrating plate and that forms a fixed angle, for example 90 °, with the vibrating plate 8. In such a case, the plate would be slightly tilted upwards in figure 1 and would be located approximately at the level of the lower edge of the flap 24. Between the plate and the vibrating plate 8 there would, therefore, be a separation in this position away from the filler neck 3.

The filling device 2 has a rotating column 9 arranged vertically in the operating state, which can rotate about an axis of rotation 10. The filling device 2 here rotates at a constant speed counterclockwise. Of course, the filling device 2 can be moved according to the mirror arrangement of the device according to the invention also in a clockwise direction. With the clamps 11 movably mounted on the filling device 2, which are adapted to the shape of the filling neck 3, the bags 1 can be fixed to the filling neck 3 by clamping. The circular disk-shaped carrier 16 of the filling device 2 carries, on the one hand, the hopper 4 located on the carrier 16 and the filling neck 3 arranged below the carrier 16. The diameter of the carrier 16 thus forms the largest diameter of filling device 2 in this example.

In FIG. 1, the first support 12, which is movably mounted on the filling device 2, is largely covered by the filler neck 3, which is largely covered by the filler neck 3. Only the second bracket 13 can be seen, which is movably mounted on a fixed guide in space. The guide fixed in space 14 is here formed as a curved guide rail, and is spatially fixed so that it is not attached to filling device 2 and therefore does not rotate together with filling device 2. The Guide 14 can, for example, be attached to a housing surrounding the device according to the invention.

Figures 2 to 4 show the device according to the invention of figure 1 during the collection of a bag 1 by the pivoting device 6. This can rotate about a pivoting axis that extends horizontally and tangentially to an imaginary circle on the axis of rotation 10 of the rotating column 9. Two pivoting arms are rigidly connected to each other and have hooks at their ends with which an empty bag 1 can be taken in a horizontal storage position.

The second support 13 is located, seen in the direction of rotation of the filling device 2, at this time at the beginning of the guide 14 and can already be aligned in the radial direction with a filling opening 15. At the moment of the rotational movement of the pivoting device 6, the supports 12, 13 do not necessarily have to be at the beginning of the guide 14. The pivoting device 6 can also, in the vertical position of the bag 1 (see Figures 5 to 7), wait for the retractable supports 12, 13. In addition, there must be no alignment with the filling opening, this is required only after opening of bag 1, that is, during the fixing of bag 1.

In Figure 4, the structure of the first support 12 and the second support 13 can be seen. To better recognize the details of the supports 12, 13, only a part of the carrier 16 is shown to the left of the rotating column. The first support 12 has two pairs of pivoting arms 17, between which a means for suction is fastened, here a suction nozzle 19. The pivoting arms 17 are hinged on one side to the suction nozzle 19, on the other side in a rotating arm 26 (see Figures 24, 25) which is rotatably mounted on the rotating column 9. Thus, the first support 12 moves in space along a circular arc. By means of the pivoting arms 17, which are designed as a parallelogram, the suction nozzle 19 can be raised or lowered parallel to the axis of rotation 10. The suction nozzle 19 is further mounted radially movable with respect to the pivoting arms 17 by means of a piston 18. The second support 13 also has two pairs of pivoting arms 17, between which a means for suction is held, here a suction nozzle 19. The pivoting arms 17 are hinged on one side to the suction nozzle 19, on the other side in a guide element which is movable on the guide rail of the guide 14. The pivoting arms 17 form a parallelogram. The guide rail is in the shape of a circular arc that is concentric to the axis of rotation 10. By means of the pivoting arms 17, the suction nozzle 19 can be raised or lowered parallel to the axis of rotation 10. The suction nozzle 19 is not mounted so that it is radially movable.

The supports 12, 13 and their suction nozzles 19 are in Figures 2 to 4 in the transfer position, where the pivoting device 6 can take an empty bag 1.

The paths of the supports 12, 13 are formed as circular arcs concentric to the axis of rotation 10, and therefore extend parallel to each other. The path of the first support 12, more precisely the path of the mounting of the pivoting arms 17, extends within the filling openings 15, the path of the second support 13, more precisely the path defined by the guide 14, extends outside of the filling openings 15. The guide 14 of the second support 13 is arranged radially outside the carrier 16, the second support 13 is partially radial inside and partially radial outside the carrier 16 or the larger diameter of the filling device 2.

The supports 12, 13, as it will be described, are synchronized around the axis of rotation 10, that is, it always rotates a part on the axis of rotation 10 in one direction and then rotates a part in the other direction and then again a part in the one direction, and so on, while the filling device 2 rotates continuously at a constant speed around the axis of rotation 10, so that neither the direction of rotation nor the speed of rotation change.

Figures 5 to 7 show the device according to the invention of figure 1 after the upward rotation of a bag 1 by the pivoting device 6. The two pivoting arms of the pivoting device 6 have the empty bag 1 pivoted from the position of horizontal storage to a vertical transfer position. In this case, the pivoting arms of the pivoting device 6 protrude radially towards the outer end of the filling neck 3 in the filling device 2. The sack 1 rests with its wall facing outwards from the rotating column 9 in the suction nozzle 19 of the second support 13. The piston 18 of the first support 12, whose piston 18 carries the suction nozzle 19, moves radially outwards until this suction nozzle 19 rests against the bag 1, on its side facing the wall of the rotating column 9. Now the bag 1 can be held by means of the suction nozzles 19 and the hooks of the pivoting device 6 can be released. The pivoting device 6 turns again and can catch the next bag 1 with the tweezers.

Figures 8 to 10 show the device according to the invention of figure 1 during the fixing of the bag 1 to the filling opening of the filling neck 3. For this purpose, the bag 1 must first be opened by the supports 12, 13. This happens because the piston 18 of the first support 12 moves again radially inward and the rotating column 9 that faces the wall of the sucked bag 1 pulls radially inward. The pivoting arms 17 of the supports 12, 13 can be raised, so that the bag is pushed out of the filler neck 3. The bag 1 is then pressed by a pair of clamps, which act only centrally on the neck filling 3, pressing against the filling neck 3 and, therefore, are taken by the supports 12, 13. After the pivoting arms 17 have been lowered, the clamps 11 are applied to the filling neck 3, of so that it is completely enclosed by the clamps 11, and therefore the bag 1 attached to the filler neck 3. During these operations, when opening and placing the bag 1, the second support 13 moves along the guide 14 synchronously with the filling device 2, that is, it has the same angular velocity with respect to the axis of rotation 10 of the rotating column 9 as the filling device 2. Furthermore, the first support 12 moves synchronously with the filling device 2, that is, it has the same speed Angularity with respect to the axis of rotation 10 of the rotating column 9. Instead of the arm 26 rotating around the axis of rotation 10 (see Figures 24 and 25) of the first support 12, for example, by means of a gear mounted on the rotating column 9, a rail or rail could also be attached to the filling device 2, for example on the carrier 16. The first support 12 could then be fixed by opening and covering the bag 1 in relation to the filling device and Only then against the direction of rotation along, for example, the rear slide rail or slide rail to collect the next bag 1.

The first support 12 moves back to the transfer position after the bag 1 has been secured by the clamps 1 on the filler neck 3 by a rotary movement of the arm 26, according to Figures 2 to 7. The second support 13 moves back to the transfer position after the bag 1 has been secured by the clamps 1 in the filler neck 3 along the guide 14 in the transfer position, according to Figures 2 to 7 .

Figures 11 to 13 show the device according to the invention of figure 1 during the filling of a sack 1. The flap 24 is already in the up-folded state in this case. The inclination of the vibrating plate 8 with respect to the rotating column 9 or its axis of rotation 10 is approximately 15 ° and in this case it is not adjustable. Brackets 12, 13 have been omitted from these illustrations. The clamps 11, which attach the bag 1 to the filler neck 3, are better recognized. The bulk material is now, in particular to an extent, such as weighing, predetermined quantity, filled into the hopper 4 and passes through the filler neck. filling 3 to bag 1. Bag 1 is now in the inclined vibrating plate 8, whereby the bulk material is compacted in the bag 1. The flap 24 at the lower end of the vibrating plate 8 supports the full bag 1 in the bottom area.

If, instead of the flap 24, a linearly movable plate is provided which forms a fixed angle of, for example, 90 °, with the vibrating plate 8, this plate would be in Figure 13 in exactly the same position as the illustrated flap 24. There would therefore be no gap between the plate and the vibrating plate 8.

The flap 24 could be removed again from the second position as shown in Figure 13 and moved to the first position as shown in Figure 1, and transferred back to the second position. The flap 24 would exert pressure on the bottom of the bag to be filled or on the bag already filled 1. Furthermore, it is conceivable to exert said pressure several times on the bottom of the bag to be filled and / or on the bag already filled 1. Even with a linearly movable plate, such pressure could be exerted.

Figures 14 to 16 show the device according to the invention of figure 1 during retraction of the bag extraction device 7 in the direction of the filling device 2. Once the bags 1 are completely full and the material in bulk is compacted, the bag 1 can be removed from the filling device 2. For this purpose, the corresponding gripping means 23 of the bag removal device 7 should also move with the filling device 2. For this purpose, a guide 20 is provided fixed in space, which in this embodiment has a circular arc shape and is concentric to the axis of rotation 10, so that the gripping means 23 can be transported along a circular arc with the filling device 2. To remove the bag filled down and out of the filler neck 3, the gripping means 23 are mounted in two pairs (relative to the guide 20 and the gripping means 23) of arms pivot tes 21, 22 to form a parallelogram. The flap 24 in Figures 14 to 16 is still in the second position, that is, in the upward folded position. If, instead of the flap 24, a linearly movable plate is provided which forms a fixed angle of, for example, 90 °, with the vibrating plate 8, this plate would be in Fig. 14 in exactly the same position as the illustrated flap 24.

In Figures 14 to 16, the gripping means 23 (seen in the direction of rotation of the filling device 2) are located at the beginning of the circular arc defined by the guide 20. The gripping means 23 now pivot in and up in the filling device 2, so that the gripping means 23 can grip the sack 1. The gripping means 23 move along the guide 20 at the same speed with the filling device 2.

Figures 17 to 19 show the device according to the invention of figure 1 before the filled bag 1 has been removed from the filling device 2 by the bag removal device 7. Here, the flap 24 is already folded towards down in the first position. If, instead of the flap 24, it were a linearly movable plate that forms a fixed angle of, for example, 90 °, with the vibrating plate 8, this plate would move downwards in Figures 17 and 19 of the plate vibratory 8, as described in figure 1. Until the gripping means 23 reach the end of the guide 20, the gripping means 23 grip the sack 1. After the gripping means 23 have gripped the bag, the clamps 11 open and bag 1 is placed down. At the same time or only then the arms 21, 22 pivot outward and downward.

Figures 20 to 22 show the device according to the invention of figure 1 after the bag removal device 7 has pivoted back away from the filling device 2. The bag 1 is still held by the gripping means 23 and can be parked and removed, for example, on a conveyor belt arranged below the bag removal device 7 by releasing the gripping means 23. Before and during parking of the bag 1, it extends into the upper space of the bag 1 for proper transfer by the gripping means 23.

Figure 23 shows an example of how the guide 14 fixed in the space of the second support 13 can be implemented. The longitudinal ends of the guide rail of the guide 14 are mounted on spatially fixed pillars 25.

It is not necessary to provide these pillars 25 especially for the guide 14, the existing spatially fixed pillar 25 can be used, which is approximately part of a housing surrounding the device according to the invention.

Reference list

1 bag

2 filling device

3 filler neck

4 hopper

5 retention device

pivoting device

bag removal device

vibrating plate

rotating column

axis of rotation

gripper

first support

second support

guide for second support 13

filling opening

carrier

pivoting arms

piston

suction nozzle (suction means) guide for the bag extraction device 7 arm

arm

gripping medium

fin (support element)

pillar

swivel arm

Claims (9)

1. A device for transporting and filling bags (1), preferably open-mouth bags, comprising a filling device (2) rotatable about an axis of rotation (10) with a plurality of filling openings (15) distributed over the circumference of the filling device, where to compact the bulk material in the bags (1) a vibrating plate (8) is arranged below at least one filling opening (15), which seen from the filling opening is inclined towards outside, so that the filled bags (1) rest on the vibrating plate (8), characterized: because in an end section of the vibrating plate (8), which is remote from the filling opening (15), a support element is arranged movable with respect to the filling opening, to support a filled bag in the bottom area (1) resting on the vibrating plate, because a flap (24) that can rotate towards the filling opening is arranged as a support element, and because the flap (24) forms a plane with the support surface of the vibrating plate (8) for the bag (1 ) in a first folded position away from the filling opening. A device according to claim 1, characterized in that the flap (24) forms a right angle with the support surface of the vibrating plate (8) for the bag (1) in a second folded position towards the filling opening . 3. A device according to claim 1, characterized in that the support element can be moved linearly towards the filling opening, in particular parallel to the support surface of the vibrating plate (8). A device according to claim 3, characterized in that the support surface of the support element forms a fixed angle, in particular a right angle, with the support surface of the vibrating plate (8). A method of transporting and filling bags (1), preferably open bags, with a device according to one of claims 1 to 4, wherein a feeder feeds an empty bag (1) through a filling opening (15), characterized in that the support element, the flap (24) that can rotate towards the filling opening, during the feeding of the empty bag (1) is in a first position remote from the filling opening and forms a plane with the surface of support of the vibrating plate (8) for the bag (1), and the support element, the flap (24), is then transferred to a position closer to the filling opening, at the latest once it has been filled the sack (1). 6. A method according to claim 5, characterized in that the support element is already transferred during the filling of the bag (1) in the second position closest to the filling opening. 7. A method according to claim 5 or 6, characterized in that the support element is removed from the second position once it is reached again and moves to the first position, and is transferred again to the second position. 8. A method according to claim 7, characterized in that the method according to claim 7 is repeated several times. 9. A method according to one of the preceding claims, characterized in that the support element is transferred to the first position again before the extraction of the full bag (1).