Distribution device for coloring products

Distribution device for coloring products, comprising a collector for dispensing nozzles and corresponding nozzles mounted thereon. The collector comprises a containing body provided with one or more through cavities. In correspondence with one end associated to an external surface the containing body is provided with a positioning element. The containing body is provided with a seating, inside the external surface, disposed at the end of each of the through cavities, defining a wider portion with respect to the cross section of the corresponding through cavity.

FIELD OF THE INVENTION

The present invention concerns a distribution device for coloring products, comprising a collector for dispensing nozzles and the corresponding nozzles mounted thereon.

The distribution device is applied in all the fields of the state of the art in which it is necessary to guide and keep one or more dispensing nozzles of any type of product, whether it is solid or fluid, accurately positioned. In particular, but not only, the device according to the present invention is applied in dispensing machines, also called dispensers, able to prepare and distribute coloring products, such as varnishes, paints or similar.

BACKGROUND OF THE INVENTION

A distribution device for coloring products is known, having a collector for dispensing nozzles which comprises a containing body provided with a plurality of through holes, in each of which a dispensing nozzle is suitable to be inserted, which in correspondence to one of its delivery ends a pair of flexible positioning tongues of the snap-in type is provided.

In this known collector, when the corresponding dispensing nozzle is inserted in the collector, the two flexible positioning tongues cooperate directly with the external surface of the collector that faces downward, that is, toward the delivery side, which is normally flat and smooth.

This known collector however has the disadvantage that it does not guarantee a precise positioning of the dispensing nozzles, because the corresponding flexible tongues are not guided laterally and can bend to a greater or lesser extent, depending on the axial thrust which is applied on the dispensing nozzle.

Document U.S. Pat. No. 5,730,363 A describes a water delivery head for a shower, which comprises a first holed plate and a second plate in which a plurality of channels for the delivery of jets of water is made.

EP 283.137 A describes a collector for nozzles comprising a plate with a plurality of holes in each of which a corresponding nozzle is inserted.

U.S. 2005/092386 A1, WO 2011/163227 A1, U.S. 2009/230149 A1 and U.S. 2012/111887 A1 also concern in general holed plates to house and support corresponding distribution elements of fluid products.

Purpose of the present invention is to manufacture a distribution device for coloring products comprising a collector for dispensing nozzles which allows the latter to be positioned with precision, in a simple, reliable and inexpensive way.

SUMMARY OF THE INVENTION

The present invention is set forth and characterized in the independent claim, while the dependent claims describe other characteristics of the invention or variants to the main inventive idea.

The new and original technical solution, which achieves said purpose, with immediate, surprising and unforeseeable advantages, yet still contains the production costs, provides to manufacture a collector for dispensing nozzles which comprises a containing body provided with one or more through cavities, each suitable to contain a dispensing nozzle, which in correspondence to one of its ends associated, during use, to an external surface of the containing body of the collector, is provided with at least a positioning element of the snap-in type.

In accordance with a main characteristic of the present invention, the containing body is provided with a seating, disposed inside the external surface at the end of each of the through cavities, defining a wider portion with respect to the cross section of the corresponding through cavity, and in which the positioning element of the corresponding dispensing nozzle is suitable to be housed.

In a preferential form of embodiment of the present invention, the seating comprises a notch with a transverse size greater than that of the corresponding through cavity.

Moreover, in accordance with a secondary feature of the present invention, when the pair of snap-in positioning elements comprises two flexible tongues, the transverse size of the notch is substantially equal to the maximum bulk of the two flexible tongues when they are in the extended position.

With the present invention, since the housing seating, or notch, of the positioning tongues is disposed inside with respect to the external surface of the containing body of the collector, a precise positioning of the dispensing nozzles is guaranteed, since the corresponding tongues are guided laterally and cannot bend as a function of the axial thrust which is applied on the dispensing nozzle.

DETAILED DESCRIPTION OF ONE FORM OF EMBODIMENT

With reference toFIGS. 1 and 2, a distribution device for coloring products comprises a collector10suitable to support a plurality of dispensing nozzles11of the known type, for example suitable to dispense coloring products, such as liquid pigments. The collector10is suitable to be mounted on a dispensing machine of the known type, for example of the type described in the international patent application WO-A-2011/161532, or in the Italian patent application for industrial inventions UD2012A000126, both in the name of the Applicant.

The collector10comprises a containing body12which is substantially disc shaped, made, for example, of polyoxymethylene (POM). The containing body12is passed through by a plurality of through cavities13, of which there are twenty-four in the example given here, but there could be more or fewer, since their number is not an important feature of the present invention. Indeed, the body12could have just one through cavity13. In each through cavity13a single dispensing nozzle11is suitable to be housed.

In this case, each dispensing nozzle11has a cylindrical tubular shape, is made of plastic material, for example DELRIN© 500, or of metal, for example stainless steel, and is provided at one of its dispensing ends14with a pair of flexible tongues15, disposed diametrically opposite and which act as positioning elements. During use, when the nozzles11are inserted in the respective through cavities13, the dispensing end14exits with respect to an external surface12aof the body12normally facing downward.

Similarly, each through cavity13also has a substantially cylindrical shape and sizes mating with those of the dispensing nozzles11, in order to house, with precision, one of these inside it. Each of the two flexible tongues15is elastically mobile between an extended position and a compressed position.

At the external end of each through cavity13, but in an internal position with respect to the external surface12a, a seating16is made in which the two flexible tongues15of a corresponding dispensing nozzle11(FIG. 3) are suitable to be housed. Each seating16has the shape of a notch, cylindrical or with a truncated cone shape, substantially centered with respect to the corresponding through cavity13and having a transverse size greater than that of the latter. For example, if the diameter of the through cavity13is about 5 mm, the seating16has a transverse size of about 6 mm and a depth of about 1 mm.

Therefore, when a dispensing nozzle11is inserted in a corresponding through cavity13, the flexible tongues15of the dispensing nozzle11snap-in elastically inside the seating16, so that the bottom wall of the latter will define the axial position of the delivery nozzle11, while the lateral wall of the seating16will define the field of action of the flexible tongues15, limiting stress and danger of breakage thereof. In this way, each dispensing nozzle11will be perfectly centered and positioned axially with respect to the containing body12of the collector10.

It is clear that modifications and/or additions of parts may be made to the distribution device for coloring products as described heretofore, without departing from the field and scope of the present invention.

It is also clear that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of collectors for dispensing nozzles, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.