FR2527548A1 - VACUUM CLOSURE SYSTEM FOR CONTAINERS - Google Patents

Abstract

CLOSURE OF CONTAINERS OF PRODUCTS SUCH AS PAINTS. VACUUM CLOSURE SYSTEM FOR CONTAINERS 12 WITH A LID 13 CHARACTERIZED IN THAT IT INCLUDES A SUPPORT FOR CONTAINER 12, A MOBILE ASSEMBLY 6 INTENDED TO CIRCUMBRATE THE MOUTH OF CONTAINER 12 AND CREATE A VACUUM AT ITS UPPER PART, AND MEANS 7 AND 8 TO APPLY THE COVER WHEN THE VACUUM HAS BEEN ACHIEVED.

Description

The present invention relates to a system of

  vacuum sealing of containers, which can be applied to

  the closing of the containers which contain products such as paints, varnishes, etc., the closure itself being carried out by means of a cover that is available and

  that is placed by pressure on the mouth of said container.

  It is well known that, when the closing operation is carried out with a lid by pressure in the container, a relatively small air chamber is provided, this compressed air having a pressure all the greater as the chamber

of air is reduced.

  In specific cases, this pressure in the

  container may cause accidental opening of the container

  ci, under the effect of a shock, or under the effect of a fall, etc. of the container itself, especially if the containers comprise

slippery interior lacquering.

  The object of the invention is to remedy this drawback by producing a closure apparatus operating by virtue of a vacuum or a controlled vacuum, which makes it possible to insert and

  press the cover under pressure under a prede-

  completed, so that there appears to be no pressure on the

  inside the container, using the lids

  with which normally defined types are closed.

  containers, and precisely those intended for

  -contain varnishes, paints and enamels in general.

  The equipment that constitutes the closure system

  according to the invention is constituted from a bridge which comprises

  a body acting as a carcass, housing in its interior, a tray for adequately positioning the container and to exert pressure on the cover to perform the

  closure of said container, while providing, in solidarity with

  carcass, a lower cylindrical body, which will be called sealing vessel, the latter having radially an orifice may be placed opposite a vacuum nozzle mounted on a vacuum valve that is actuated by means of a

pneumatic cylinder.

  The set includes another pneumatic cylinder for

  move the tray that pushes the lid, as well as a third

  second pneumatic cylinder to move the bridge.

  Said bridge is mounted on a column or a lateral support which makes up a plate on which

  place the receptacle in a suitable position

  sea, while one climbs to the top of this

  column or support the pneumatic cylinder actuating the bridge.

  As we have seen, the apparatus which constitutes the system is pneumatically actuated with

  proximity which gradually control his movements

  and general, and it further comprises a pressure switch of

  control of depression or "depressostat", allowing control

  vacuum, and a vacuum gauge to observe it

visually.

  The apparatus can be manual or automatic, and it can also be mounted to be synchronized with an automatic bottling line, in which case the bottom tray of the container would be removed, and replaced by the support means. and / or transport corresponds

da nts.

  The invention will now be described with more

  details, with reference to a particular embodiment

  link, given as an example only and represented in

  FIG. 1 is a sectional view of the apparatus which constitutes the system, the section of which corresponds to the two halves in which one distinguishes the apparatus at rest, and in the other, the apparatus in actuating position for closing the container 7

  FIG. 2 corresponds to another sectional view,

  ferent of the one shown in the previous figure and on which we can see the support column with its

  lower plate and the upper pneumatic cylinder.

  As shown in the figures, the apparatus which constitutes the system according to the invention comprises a column or general support 1 which comprises, in its lower part

  a tray 2 and in the upper part a pneumatic cylinder

tick 3.

  On the column (or support) 1 itself, is fixed, below the pneumatic cylinder 3, a frame 4 on which is welded inferiorly a bridge 5 which is itself secured to a body 6 called "sealing vessel" ", corresponding joints being inserted between a closing plate 7 which is moved

by a pneumatic cylinder 8.

  On a lateral zone, there is provided a vacuum valve 9 which is actuated by a pneumatic cylinder 10, and on which is disposed a connecting nozzle 11 connected to the

  means of a flexible tube to a vacuum pump not shown.

  The entire bridge can be rigid according to the

  design, although it can also be adjustable in height so that one can manufacture with the same machine containers of different heights, the support comprising in this case a worm to move and adjust the

  bridge at different heights of containers.

  Under these conditions, the apparatus operates in the following manner: Firstly, the pot or container 12, full of the product to be packaged, is placed on the tray 2, the container 12 being

  centered by means of the sealing vessel 6 and the cover 13 cor-

  respondent being placed on the mouth of said container but in an unclosed position, ie without being subjected to a pressure

if we.

  Once the container 12 centered with the lid 13 in position on its mouth, the cylinder 3 is actuated.

  down the frame 4 of the position designated by the reference

  The frame 4 moves downward until the seal 16 in the sealing vessel 6 presses on the upper edge (or crown).

  of the container 12, the chambers 17 and 18 remaining isolated from the

  outside of the atmosphere, so that the cylinder 10 displaces the

  pope 9 from the rest position 19 to the 20 called position

  also rest and work positions, respectively.

  In the latter position, the vacuum pump will begin to ab-

  sorb the air from chambers 17 and 18, so that when the

  "depressostat" signals the predetermined vacuum level, it trans-

  puts an order to the cylinder 8 and the latter causes the plate 7 to descend to its rest position at the working position, both being shown in FIG. 1, said plate 7 exerting a pressure on the cover 13 and introducing the latter into the upper annular ring of the container 12,

  the vacuum closure of the container 12 being at this moment effected

carried out.

  Once the closure is completed, the valve 9 rises from the working position 20 to the rest position 19, so that the chamber 18 remains at normal or atmospheric pressure and the chamber 17 of the container 12 remains under

  Finally, the tray 7 returns to its initial position.

  Of course, the invention is not limited to the mode

  which has just been described and shown

  ra bring many modifications of details without going out

for this purpose of the scope of the invention.

Claims (1)

Container vacuum closure system (I 2) and especially designed to constitute a container closure apparatus (I 2) intended to -hold products such as paints, varnishes and enamels in general by realizing the closure itself by means of a lid (13) placed by pressure on the mouth of said container (I 2) and comprising a column or general support with a lower positioning plate 10 of the container to be closed and a pneumatic cylinder (8), characterized in that it comprises on the column (I) below the upper pneumatic cylinder (8), a general frame acting as support for a bridge (5) which comprises inferiorly a body referred to as a "sealing vessel" (6) with respect to which is disposed concentrically a body acting as a closure plate, with the particularity that said sealing vessel (6) comprises a int (I 6) intended to be placed on the upper edge of the container (I 2) when closing is performed, while the closing plate (7) is intended to exert pressure on the lid (I 3) so that it enters by pressing on the mouth of the container (I 2) which closes, the passage of the rest position or elevated frame (I) to the working position or lower, these movements being controlled by the pneumatic cylinder upper (3) while the lowering of the closure plate is performed by a second pneumatic cylinder (8) located on said plate and placed in the frame (4) to which the bridge (5) is secured. System according to claim 1, characterized in that it comprises, laterally with respect to the bridge (5), a vacuum valve (II) capable of occupying two positions, a first upper or rest position and a second position, lower or working, these two positions being determined by the corresponding actuation of a third pneumatic cylinder in connection with this valve (II), a nozzle being connected thereto, a nozzle to which access 2552? 48   an elastic conduit from a vacuum pump which acts when the valve (11) is in the lower or working position, producing a vacuum in the chamber which is   between the level of the product contained in the reci-   (I 2) and the lid (13) at the time of closing.