DE8805854U1 - Device for closing a valve bag - Google Patents

Description

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DIPL.-ING. BODO THIELKING

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DIPL.- ING. OTTO ELBERTZHAGEN

POSTAL CHECK ACCOUNT: HAM 3O91 93-3O2 ATTORNEY FILE 14 908

DATE

29 April 1988 /see below

Annemarie Teutrine, Borgfeld 16,
4740 Oelde-Stromberg

Device for closing a valve bag

The invention relates to a device for closing a valve bag, the valve of which has mutually corresponding areas of a Velcro fastener.

Valve bags are known whose valves have areas of a Velcro fastener that correspond to one another. When empty, a separating sheet lies between the corresponding areas. When filling, the separating sheet is moved so that the Velcro areas lie directly on top of one another after filling.

The invention is based on the object of providing a device

tu create which is suitable for valve bags with

To close the valves with Velcro fasteners to prevent dripping.

14 908 29.04.1988

This problem is solved by providing a pressure device which is designed as a pressure element to rest on the outside of the valve or the corresponding bag area and to press the corresponding Velcro areas together after the valve has been removed from the filling nozzle of the filling machine.

In a preferred embodiment, the pressure element comprises a roller or cylinder running on the outside of the valve or the corresponding bag area.

In a further preferred embodiment, the pressure element of the pressure device can be moved by means of a piston cylinder unit. As an alternative, it is also provided that the pressure element of the pressure device can be moved by means of an electric motor.

The device according to the invention ensures that the Velcro fastener is pressed tightly together after it has been removed from the filler neck, with the result that an effective valve seal is ensured. For certain filling materials, it is sufficient to provide only one pressure device. For other, particularly less compact materials, it proves to be advantageous to provide a counter-pressure device on the side of the valve opposite the pressure device. This counter-pressure device can preferably be moved into and out of the active position. The provision of a counter-pressure device ensures that the Velcro areas that correspond to one another engage firmly even when difficult filling conditions exist.

14 908 29.04.198

Further features of the invention emerge from the further subclaims and the following description of the drawing. The drawing shows:

Figure 1 is a schematic representation of a first
Design of the closing device
in side view.

Figure 2 shows a second embodiment of the closing device also in side view,

Figure 3 a view of the drive cylinder for the
Pressure element,

Figure 4 is a front view of the pressure device.

In the embodiment shown, a pressure element 1 is designed as a roller or cylinder. The pressure element is freely rotatable in lateral brackets 15, which can be screwed to a swivel arm 16 in certain desired positions. The swivel arm 16 is firmly connected to a shaft 18. When the shaft 18 is rotated, the swivel arm 16 with the pressure element 1 is moved downwards from the starting position shown in the direction of the arrow 20.
pivots. The shaft 18 is in turn connected in a rotationally fixed manner to an actuating arm 19, at the end of which the piston rod of a piston-cylinder unit 6 engages. The piston-cylinder unit 6 is fastened to the sack chair designated 13. The shaft 18 is held in two bearing brackets 17, which are also fastened to the sack chair 13.

12 is a bag that has a valve marked 2 in total. The valve has the two

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14 908 29.04.198&iacgr;

Velcro areas 3 and 4 that correspond to one another. To fill the valve bag, it is pushed onto the filling nozzle 5 of the packer. The tilting frame 14 is in the position shown on the left in Figure 1, which is shown in dashed lines in Figure 2.

11 designates a counterholder for the bag 12, which is only shown in the embodiment according to Figure 2. When the tilting frame 4 is tilted, the counterholder 11 prevents the bag 12 from being released before the pressure element 1 has pressed the Velcro areas 3 and 4 together.

The embodiment according to Figure 2 corresponds practically to the embodiment according to Figure 1 with the proviso that a counter-pressure element 7 is also provided there. The counter-pressure element 7 consists of a loosely mounted roller which is connected to a gear 8 via an arm. With the help of a rack 9 which is actuated by a piston-cylinder unit, the gear 8 can be rotated, with the result that the counter-pressure element 7 is either in the active position or out of the active position. The active position is shown in Figure 2 in solid lines, the non-active position in dashed lines.

Claims (12)

1. Device for closing a valve bag, the valve of which has corresponding areas of a Velcro fastener, characterized, that a pressure device is provided which is a pressure element (1) designed to rest on the outside of the valve (2) or the corresponding bag area and to press together the corresponding Velcro areas (3 and 4) after the valve (2) has been removed from the filling nozzle (5) of the filling machine. 2. Device according to claim 1, characterized in that the pressure element (1) has a roller or cylinder running on the outside of the valve or the corresponding bag area. 3. Device according to claim 1 or 2, characterized in that the pressure element (1) of the pressure device is movable by means of a piston-cylinder unit (6). 908 29.04.1988 4. Device according to claim 1 or 2, characterized in that the pressure element (1) of the pressure device can be moved by means of an electric motor. 5. Device according to one or more of claims 1 to 4, characterized, that a counter-pressure element (7) is provided on the side of the valve (2) opposite the pressure element (1). 6. Device according to one or more of claims 1 to 5, characterized, that the counterpressure element (7) can be moved into and out of the active position. 7. Device according to one or more of claims 1 to 6, characterized, that the counterpressure element can be pivoted into and out of the active position. 8. Device according to one or more of claims 1 to 7, characterized, that the counter-pressure element (7) is a loosely mounted roller and roll. 908 29.04.1988 9. Device according to one or more of claims 1 to 8, characterized, that the counterpressure element (7) is driven by means of a gear wheel (8) nn r\ &ogr; i rna *- 7ahnef^nrtö / Q \ !»«&ngr;&sgr;&eegr;&Kgr; ».»*■* »-» L· W =» &ngr; i &igr;- +- 10. Device according to one or more of claims 1 to 9, characterized, that the rack (9) is displaceable by means of a piston-cylinder unit (10). 11. Device according to one or more of claims 1 to 10, characterized, that the pressure element (1) and the counter-pressure element (7) can be actuated by means of a common drive. 12. Device according to one or more of claims 1 to 11, characterized, that a counterholder (11) for locking the bag (12) during the closing process.