DE3243058A1 - DEVICE FOR A VACUUM SEAL OF CONTAINERS - Google Patents

Description

LLAMAS, S.A. 22 424/25

Coll y Pujol 90-112
Badalpna (Barcelona) / Spain

Device for vacuum sealing of containers description

The invention relates to a device for a vacuum closure of containers, which is used to contain such products as paints, varnishes, etc., to containers
close, the closure itself being effected by a lid which is placed under pressure on the opening of the respective container.

It is a known fact that a filled, in his upper area a relatively small air space having container stores a pressure in its interior, if the sealing or closing process is carried out with a pressure cap, the smaller this pressure becomes, the greater it is the upper airspace is made.

In certain cases, the pressure in the upper part of the container allows it to open unintentionally, for example in one fell swoop or if the container falls down
itself is due, and this is particularly true in the event that the container has a smooth, lacquered texture on its inner surface.

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This is the reason for the problems that result from ejecting or throwing pressure lids, in particular with for paints, varnishes and the like. Specific containers with varnished inner surfaces result.

In order to overcome these problems, according to the invention a device for sealing containers is provided, which works with regulated vacuum or negative pressure, which makes it possible to put a pressure lid in a container with a To use a given negative pressure and to secure it therein, with no pressure whatsoever then being present within the filled container. This is where they usually come for closing certain types of containers, mainly those for holding paints, varnishes and enamel varnishes, used pressure cover for use.

The device according to the invention essentially comprises a head with a part serving as a kind of housing on, in which a plate or a plate is received to bring the container into a correct position and pressure exercise on the lid so that it can seal the container tightly. With the housing part or head is down a cylindrical body known as a hermetically sealed Body can be referred to, and this cylindrical body is in the radial direction of a Bore penetrated, which can be opposite a vacuum connection piece, which is attached to a vacuum valve operated by a compressed air cylinder.

Furthermore, a compressed air cylinder for actuating the on the lid pressing plate and another compressed air cylinder to operate the head.

This head is od on a side stand, a support

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Plate carries on which the tightly sealed container is arranged in the correct position, while on the upper part of the stand or support the driving the head Air cylinder is attached.

It follows from the above that the device is operated pneumatically, with proximity sensors being used, the progressive the partial and total movements of the device steer. There is also a low pressure regulator for controlling the vacuum and a vacuum gauge for visual Observation present.

The device can be operated manually or automatically < work; it can also be placed in synchronism with an automatic packaging conveyor, in which case the lower plate for positioning the container is omitted and a corresponding device for the Set and / or the transport of the container is replaced.

The subject of the invention is based on one in the drawings illustrated preferred embodiment explained. Show it:

1 shows sections through the device according to the invention, shown broken off above and below, namely (right) in the rest position and (left) in the working position, ie. ready to seal a container;

Fig. 2 is a partially sectioned side view of the device.

The schematically illustrated vacuum sealing device according to the invention consists inter alia of a stand 1, an the lower end of which is a plate 2, while a compressed air cylinder 3 is attached to the top of the stand 1,

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under which a frame or bracket 4 is attached to the stand. At the lower end of the bracket 4, the head 5 is welded, with which in turn a sealing ring body 6 is connected, in which a compressed air cylinder 8 movable closure plate 7 is guided in a sealed manner.

On one side of the device a suction air or vacuum valve 9 is provided, which is a compressed air cylinder has as a drive and its connecting piece 11 by means of a hose with a vacuum pump (not shown) is connected.

The arrangement of the head, as shown in the drawing, can be rigid, although height adjustment is also possible is considered in order to process containers with different heights with one and the same device can. In this case, the stand receives screw spindles to move the head and to the different container heights to adjust.

The device works in the following way:

First, a can or container 12 filled with the product to be sealed is placed on the plate 2 and centered with the aid of the ring body 6, the lid 13 associated with the container 12 being loose, i.e. without applying pressure, lies on the container opening.

After centering the container 12 with the lid lying loosely, the compressed air cylinder 3 is actuated to the Bracket with head 5 and ring body 6 from the rest position 14 to bring into the working position 15. The bracket 4 moves downwards until the seal 16 present on the ring body 6 exerts a pressure on the upper edge of the container 12, the spaces 17 and 18 against the external atmosphere be completed because the air cylinder 10 also

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the valve 9 from the rest position 19 into the working position 20 moves. In this working position the Vacuum pump to suck the air out of rooms 17, 18, so that when the vacuum regulator detects a predetermined vacuum level, it sends a command to the air cylinder 8 gives, which then leads the Verschußtel ler 7 down from the rest to the working position. Here then presses the closure plate 7 against the cover 13 and guides it into the opening enclosed by the edge of the container, with which at this moment the vacuum-tight closure of the container 12 is effected.

After the tight seal has been made, the valve 9 out of the working position 20 up into the rest position 19, so that the room 18 on normal or atmospheric Pressure comes while the desired vacuum is still maintained in space 17. Ultimately, the sealing plate will then be 7 and also the bracket 4 is raised, with which the sealing process is ended.

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Claims (1)

LLAMAS, S.Aο 22 424/25 Coll y Pujol 90-112
Badalona (Barceiona) / Spain Device for vacuum sealing of containers Claims Device for a vacuum closure of containers with a lid placed under pressure on the edge of the opening, in particular for containers containing paints, lacquers, enamel lacquers and the like, with a stand _s a compressed air cylinder attached to the top of this and a compressed air cylinder attached to the bottom of the stand, the to The plate carrying the sealing container, characterized in that a bracket (4) is arranged on the stand (1) below the upper compressed air cylinder (3) which carries a head (5) with a sealing ring body (6) attached to it at the bottom, the one when the container (12) is closed, the sealing ring (16) is located at the edge of the opening and a closing plate (7) is sealed and concentrically accommodates, which exerts a pressure on the lid (13) to enter and close the container opening, so that the upper compressed air cylinder (3) moves the bracket (4) from the rest position (14) into the working position (15) and that a second compressed air cylinder (8) is arranged above the closure plate (7) within the bracket is that moves the locking plate up and down. Device according to claim 1, characterized in that the side of the head (5) A vacuum valve that occupies two positions - an upper resting position (19) and a lower working position (20) (9) is arranged, its adjustment in the two positions (19, 20) by means of a third compressed air cylinder (10) takes place, and that a connection piece with the vacuum valve (9) (11) is connected for a line leading to a vacuum pump, which is in the working position (20) the vacuum valve creates a negative pressure in that of the mirror of the product contained in the container (12) and the container lid (13) limited space (17) when closed of the container generated. Device according to claim 2, characterized in that the sealing ring body (6) of one in the working position (20) of the vacuum valve (9) with the connecting piece (11) connected on the air side Hole is penetrated.