EP1571102A1 - System for spraying a lacquer - Google Patents

Abstract

The system for spraying two-component lacquers comprises spray cans (1, 3) for each of the components. The valve seats (8) of these are inserted into recesses (7) on either side of an adapter (5) containing valve-release components (6) so that one can is upside-down.

Description

The present invention relates to a system for spraying a paint at least two components, with a valve and a first component having first can.

A system of the aforementioned type is known for example from DE 203 14 994 U1 known. In the known system, an aerosol can is provided which a Outer housing in which a first component is received, and a Inner housing which receives the second component and to the outer housing is sealed in an initial position. The aerosol can further indicates a valve member for metering the reaction product of the two Components after mixing them up.

In other words, the known system has two containers, the contents of which - one component each of a paint - via a common valve after the Mixing of the two components is sprayable.

In the known system is problematic that the structure of the common Valve is very complicated. Furthermore, it has been shown in practice that the complicated valve of the known system in operation often glued. A safe Function of the known system for spraying a paint from at least two components is not guaranteed.

The present invention is therefore based on the object, a system for Spraying a paint of the type mentioned in such a way and educate that allows safe operation with simple design means is.

According to the invention the above object is achieved by a system with the Characteristics of claim 1 solved. After that, the system is through at least a valve and a second component having second can and an adapter for establishing a flow connection between the first Can and the second box characterized by an actuation of the valves of the cans.

In accordance with the invention, it has first been recognized that it is for the provision a varnish of at least two components just before its processing is not necessary, a complicated valve system to mix two originally in a can housing separately accommodated components of a paint provide. Rather, it has been further inventively recognized that the provision of a suitable adapter in a simple manner the content of two separate doses within one of the two doses miscible and then through the original simple valve of the mixture receiving can sprayable is. For this purpose, the system has in concrete at least one a valve and a second component having second box, which by means of an adapter with the first can is coupled, wherein through the adapter a flow connection between the two doses produced by pressing the valves of the cans is.

In other words, in the system according to the invention only one, if necessary existing spray head be removed from the valves of the cans and the adapter then be coupled between the cans. In the inventive However, it is also conceivable that the first and the at least a second can together with the appropriate adapter - even without usual spray heads - packaged and sold as a set. A commercial Spray head could then be mixed after mixing the components onto the mixture receiving socket or placed on the valve, whereby the can becomes ready to spray.

Finally, in the system according to the invention, only care must be taken that the adapter in a suitable manner to that of the first can and the second Can existing valves is adjusted. A safe spraying of the at least two components existing lacquer is then by a conventional, proven in practice valve of the first box allows.

Consequently, with the paint spraying system of the present invention System specified in which safe operation with structurally simple means is possible.

With regard to a particularly safe and fast flow of the second component in the first can in the second can a higher internal pressure than in the first can prevail. For example, the pressure in the second can between 3.8 and 6.2 bar at 20 degrees Celsius. In practice, this has maximum flow times for the second component in the first can of maximum 15 s result. Typically, a flow time of 10 to 12 seconds been found. After flowing the second component into the first can could still be a shake of the first can done to a particularly safe To achieve mixing of the two components. The subsequent processing time or time to spray the paint from the two components typically about 6 hours.

As components of the paint could, for example, in the first box Epoxy resin and in the second can a hardener to provide a protective coating to be provided. However, other components are also conceivable. In particular, more than two components could be mixed in the first can become. In any case, it is important to ensure that the original Filling quantity of the first can to the still to be filled further component or the still to be filled other components is adjusted. In other words the volume of the first can must be chosen such that all desired Components can be filled into the first can.

With regard to a particularly easy to produce and very simple handle adapter, the adapter could be formed substantially cylindrical be. With regard to a particularly stable and possibly multiple reusable adapter, the adapter could be made of metal, preferably made of metal Aluminum, to be made. However, plastic adapters are also conceivable, which could be produced by injection molding, for example.

With regard to a particularly secure and simple coupling of the first and the second socket with the adapter, the adapter could be conical at least one end or be formed bevelled. This is a particularly secure insertion of the adapter in the wells typically formed by a valve disc in the upper area of a can. This could be the adapter at a cylindrical conformation in each case a conical or bevelled end in Have area of the base surfaces of the cylinder.

To ensure safe operation of the valves of the cans could Adapters at opposite ends in each case a raw-shaped engagement or actuation element for a valve. Such an engagement or actuation element could be present in the usual conventional doses Passage be inserted in the valve seat to actuate the valve.

With regard to a particularly safe actuation of the valve or the valves could the engagement or actuation element in a substantially cylindrical Be arranged recess of the adapter. The engagement or actuation element could basically at the circular bases of a cylindrical Adapters can be arranged. In such bases could continue a cylindrical recess may be formed, in which the engaging or actuating element is arranged. The arrangement in such a recess offers on the one hand a protection of the engaging or actuating element against damage and on the other hand the possibility of a secure arrangement of the adapter on the valve seat of a can. The valve seat could be in the coupling of the cans in the cylindrical recess are inserted, which continues to be a particularly secure fit of the adapter to the cans and thus a particularly safe Coupling and flow connection of the cans is guaranteed. For this could the inner diameter of the recess in the adapter substantially the the same amount as the outer diameter of a valve seat one of the cans exhibit. More specifically, the outer diameter of a valve seat in the With regard to easy insertion of the adapter to be slightly smaller than the inner diameter of the recess.

With regard to a particularly simple and secure flow connection between the first can and the second can could be the tubular engaging or actuators are aligned and together a common flow path form for the flowing component.

With regard to a particularly stable arrangement of the system of the two Cans and the adapter could be associated with one of the cans a guide for a can be. By means of such a guide could one of the cans during the Coupling process of the two doses are performed. In a particularly favorable Case could be both the adapter through the valve plate and / or the valve seat a can or both doses and could then continue at least one of the cans additionally be guided by the guide.

A particularly simple guide could by a protective cap in a Can be formed trained passage. It could initially an arrangement be formed from the first box, the adapter and the protective cap. Subsequently could be the second can through through the passage in the protective cap formed leadership, creating a secure coupling of the second can with the adapter could be brought about. This is then ultimately a particularly stable and in terms of the desired flow process realized particularly secure arrangement. A flow of a component one can into the other can then squeeze through This arrangement can be realized along the longitudinal axis of the system, as a result the valves of both cans are actuated. With regard to a particularly safe Guide could be the inside diameter of the passage in the protective cap correspond approximately to the outer diameter of the other box. More precisely The inside diameter could be slightly larger than the outside diameter of the other Can be a particularly easy passing through the other can to ensure through the passage.

To avoid unwanted actuation of the valves, especially in the case where appropriate in a sales package already coupled by means of the adapter Cans could be a fuse element for the adapter and / or one of the cans Avoiding unwanted actuation of the valves associated with the cans. The fuse element could in a structurally particularly simple way be formed around the adapter can be arranged ring. Such, to the adapter Anordenbarer ring could have a height corresponding to the distance of the valve disc the coupled via the adapter doses in the unactuated state of the valves in approximately corresponds. Such a ring could move towards one another unintentionally the cans and thus prevent triggering of the valves. To produce the desired Mixing of the two components could be the ring - for example after a temporary uncoupling of one of the two cans - easy be removable. The ring could also have a predetermined breaking point, so that the Ring would be removable without having to uncouple one of the cans. In each Case could by the fuse element or the ring an unintentional operation the valves are prevented.

To avoid confusion of the color design of the cans provided components could be the protective cap and / or the securing element as a color recognition element with respect to the color of the can contained in the can Be colored component. In other words, a user could be in easy way to the color of the cap and / or the fuse element recognize what color the component contained in the can has. confusion of the colors and thus the production unusable or unwanted Color mixtures is avoided.

As a color recognition element could be in a particularly simple manner at least one the cans are assigned a preferably closed ring. Such a Ring could, for example, to the entire sprayer and thus to the Valve plates are arranged around what a color detection from virtually all Could enable viewing directions. The ring could be open or as required be formed closed, with an open ring usually easier from the can body is removable.

In a further concrete embodiment, the color recognition element as ring-like outer jacket of a hollow spherical layer or a hollow truncated cone each formed with an upper smaller and a lower major passage be. Such an outer sheath could be assigned to the can body or be arranged on the can body such that the spray device or the valve disk or the upper fold of the valve disk, as it were, from the upper one protrudes smaller passage. In other words, the valve plate would be in this Case surrounded by the outer sheath. Such an outer jacket has a relatively large color detection area, which simplifies the overall color detection.

Such an outer jacket has a predetermined material thickness, which on the off in each case of application. Especially with a not too thick Design of the outer sheath, the outer sheath could be a certain elasticity exhibit. This offers itself as a material for the outer shell in particular a Plastic on. Due to an existing elasticity of the outer sheath could Provide areas of the can body a mutual clamping effect, the for a reliable assignment of the color recognition element to the can body contributes. In other words, then an unintentional release of the color detection element largely avoided by the can body.

Cans or spray cans for paints or varnishes usually have a sealing fold, which is finally formed ring-like directly around the spray. hereby is a seal between the can body and the spray, the Valve reached. The valve having the spray is usually called attached separate element to the can body. Furthermore, a conventional Aerosol can have another fold or sealing fold in the upper Is formed portion of the can body and ultimately as a gain of Can serves. With regard to a particularly simple assignment of the outer sheath to the can body, the inner edge of the upper passage of the outer shell, to be inward-sloping, bevelled. When assigning the outer jacket to the can body, the outer shell slips due to the bevel thus easier on the ring-like sealing fold between spray or Valve and can body.

Fig. 1

in einer schematischen Seitenansicht, teilweise geschnitten, ein Ausführungsbeispiel eines erfindungsgemäßen Systems zum Versprühen eines Lacks,

Fig. 2

in einer schematischen Draufsicht den Adapter aus Fig. 1,

Fig. 3

in einer schematischen Seitenansicht, geschnitten, eine Schutzkappe mit einer Führung für eine Dose,

Fig. 4

in einer schematischen Draufsicht, von oben, die Schutzkappe aus Fig. 3,

Fig. 5

in einer Seitenansicht, schematisch und vergrößert, das Farberkennungselement des Ausführungsbeispiels aus Fig. 1,

Fig. 6

in einer Draufsicht, schematisch und vergrößert, das Farberkennungselement des Ausführungsbeispiels aus Fig. 1 und

Fig. 7

in einer perspektivischen Ansicht, schematisch und vergrößert, das Farberkennungselement des Ausführungsbeispiels aus Fig. 1.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the claims subordinate to claim 1, on the other hand, to refer to the following explanation of a preferred embodiment of the invention with reference to the drawings. In conjunction with the explanation of the preferred embodiment of the invention with reference to the drawing, generally preferred embodiments and developments of the teaching are explained. In the drawing show

Fig. 1

in a schematic side view, partially in section, an embodiment of a system according to the invention for spraying a paint,

Fig. 2

in a schematic plan view of the adapter of FIG. 1,

Fig. 3

in a schematic side view, cut, a protective cap with a guide for a can,

Fig. 4

in a schematic plan view, from above, the protective cap of Fig. 3,

Fig. 5

in a side view, schematically and enlarged, the color recognition element of the embodiment of Fig. 1,

Fig. 6

in a plan view, schematically and enlarged, the color detection element of the embodiment of Fig. 1 and

Fig. 7

in a perspective view, schematically and enlarged, the color recognition element of the embodiment of FIG. 1.

Fig. 1 shows a schematic and partially sectioned side view Embodiment of a system according to the invention for spraying a Lacks of at least two components with a valve 2 and a first Component having first can 1. With a view to easy deployment a lacquer of two components, which can then be processed within a short time is, the system has at least one valve 4 and a second component having second box 3 and an adapter 5 for establishing a flow connection between the first can 1 and the second can 3. The flow connection is produced by an actuation of the valves 2, 4 of the cans 1, 3. For this purpose, the second can 3 has a higher internal pressure than the first Can 1, so that the component contained in the second box 3 in the can 1 can flow, where then the mixing of the two components takes place.

The adapter 5 is substantially cylindrical and is at least one end conical or bevelled. This is a simplified Insertion of the adapter 5 in the valve disc area allows.

To trigger the valve, the adapter 5 at both opposite ends in each case a tubular engagement or actuation element 6 for the valves 2 and 4 on. The triggering of the valves 2 and 4 for mixing the two components is done by moving the two cans 1 and 3 together along their Longitudinal axis with interposed adapter 5. The engagement or actuation elements 6 of the adapter 5 are in a cylindrical recess 7 of the Adapters 5 arranged. The cylindrical recess 7 allows a stable Positioning the adapter 5 on the valve seats 8 of the valves 2 and 4. This is a particularly secure coupling of the doses 1 and 3 and the adapter 5 allows. For this purpose, the inner diameter of the recess 7 substantially the the same amount as the outer diameter of the valve seats 8 of the cans 1 and 3 on. The engagement or actuation elements 6 are aligned and together form a common flow path 9 for one of the two components.

To detect the color of the component contained in cans 1 and 3 the cans designed as a closed ring 12 color detection element assigned. The ring 12 has an annular outer jacket 13.

To spray the paint is after the mixing of the two components the adapter 5 is removed from the socket 1 and there is a spray head on the Valve seat 8 attached. The paint consisting of at least two components can then be sprayed within a processing time of typically 6 hours become.

The valves 2 and 4 of the cans 1 and 3 are shown in Fig. 1 only schematically and may be formed by commercially available valves.

Fig. 2 shows a schematic plan view of the adapter 5 of Fig. 1, wherein here the engagement or actuator 6 in the recess 7 can be seen. The Engagement or actuating elements 6 form a common flow path. 9

Fig. 3 shows a schematic and sectional side view of a protective cap 11 for a can 1. In the protective cap 11 a passage is formed, which serves as a guide 10 for the can 3 when coupling the two cans 1 and 3.

Fig. 4 shows the protective cap 11 shown in Fig. 3 in a plan view, wherein here the round shape of serving as a guide 10 passage is recognizable. The protective cap 11 could be used as a color detection element in terms of the color of the can be colored component contained.

5 to 7 show the ring 12 in a schematic side view, in a schematic plan view and in a perspective view, each enlarged. The ring 12 has a ring-like outer casing 13 of a hollow spherical layer each with an upper smaller and a lower major passage 14 and 15 on. In other words, the color recognition element formed by the ring 12 is cupped.

The outer sheath 13 is elastically made of plastic, so that a simple Arranging the outer sheath 13 on the can 1 is made possible.

With regard to further advantageous embodiments and developments of the invention Teaching is to avoid repetition on the one hand on the general part of the description and on the other hand to the appended claims directed.

Finally, it should be emphasized that this was previously purely arbitrary chosen embodiment only for the discussion of the invention Teaching is used, but this does not restrict to this embodiment.

Claims (13)

System for spraying a paint comprising at least two components, with a first can (1) having a valve (2) and a first component, characterized by at least one second can (3) having a valve (4) and a second component and an adapter (5) for establishing flow communication between the first can (1) and the second can (3) by actuation of the valves (2, 4) of the cans (1, 3). System according to claim 1, characterized in that in the second can (3) there is a higher internal pressure than in the first can (1). System according to claim 1 or 2, characterized in that the adapter (5) is substantially cylindrical in shape and / or that the adapter (5) is conical or beveled at at least one end. System according to one of claims 1 to 3, characterized in that the adapter (5) at opposite ends in each case a tubular engagement or actuation element (6) for a valve (2, 4). System according to claim 4, characterized in that the engagement or actuating element (6) in a cylindrical recess (7) of the adapter (5) is arranged. System according to claim 5, characterized in that the inner diameter of the recess (7) has substantially the same amount as the outer diameter of a valve seat (8) of one of the cans (1, 3). System according to one of claims 4 to 6, characterized in that the engagement or actuation elements (6) are aligned and together form a common flow path (9). System according to one of claims 1 to 7, characterized in that one of the cans (1, 3) is associated with a guide (10) for a can (3). A system according to claim 8, characterized in that the guide (10) is formed by a passage formed in a protective cap (11) of a can (1), wherein preferably its inner diameter corresponds approximately to the outer diameter of the other can (3). System according to one of claims 1 to 9, characterized in that the adapter (5) and / or one of the cans (1, 3) has a securing element for preventing accidental actuation of the valves (2, 4) of the cans (1, 3) is assigned, wherein preferably the securing element as around the adapter (5) can be arranged ring. System according to claim 9 or 10, characterized in that the protective cap (11) and / or the securing element is colored as a color recognition element with regard to the color of the component contained in the can (1). System according to one of claims 1 to 11, characterized in that at least one of the cans (1) is associated with a preferably closed ring (12) as a color recognition element. System according to claim 12, characterized in that the color recognition element as a ring-like outer shell (13) of a hollow spherical layer or a hollow truncated cone, each having an upper smaller and a lower major passage (14, 15) is formed.

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