Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2472—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device comprising several containers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
  • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
  • B05B7/241—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus the container being pressurised
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2481—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device with a flexible container for liquid or other fluent material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/00503—Details of the outlet element
  • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
  • B05C17/00513—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the thread type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
  • B05C17/00559—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components the different components being stored in coaxial chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
  • B05C17/0106—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like with means for longitudinally cutting container walls during relative displacement of the piston and its cooperating container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
  • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
  • B05C17/015—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with pneumatically or hydraulically actuated piston or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
  • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2467—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device a liquid being fed by a pressure generated in the container, which is not produced by a carrying fluid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
  • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
  • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
  • B05B7/2478—Gun with a container which, in normal use, is located above the gun

Definitions

• the present invention relates to metering and mixing devices comprising multi-chamber cartridges. Furthermore, the invention relates to a method for conveying, metering, mixing and / or application of multicomponent systems using the metering and mixing devices according to the invention.
• Multi-component systems for the purposes of the present invention are those systems whose individual components are stored separately before application and are mixed together only in the required proportions before the application.
• Typical multicomponent systems are, for example, room-temperature-crosslinking coating agents, such as, for example, paints, but also many sealants or adhesives.
• those systems are also regarded as multicomponent systems whose individual components do not chemically react with one another, but after the mixing of the components changes in physical properties occur. For example, these may be increases in viscosity after mixing two low-viscosity components without having to undergo a chemical crosslinking reaction.
• mixing devices are known from the prior art, which are designed differently for the respective purposes.
• mixing devices such as those used in painting processes, in particular spray painting processes, often differ greatly from those used for adhesives and sealants, as are offered, for example, in many construction and home improvement stores.
• the material is discharged from the cartridge by plungers, that is to say positively displaceable pistons. Since the mixing devices of the present invention can be used universally, the state of the art for both the spray painting and the adhesive and sealant applications is outlined below.
• Spray painting processes are widely used, for example, without electrostatic paint charging in industrial and artisanal paint shops.
• processes are characterized above all by the fact that they can be used manually, have a high degree of flexibility with regard to the shape, size and materials of the objects to be painted, the choice of paint and the change of paint, are mobile in use and entail relatively low investment costs (H Kittel, "Textbook of Paints and Coatings", Second Edition, Volume 9, pp. 26-40, S. Hirzel Verlag Stuttgart Stuttgart, 2004).
• the spray painting processes can be distinguished essentially in compressed air spraying in the high pressure or low pressure method on the one hand and airless spraying, with or without air assistance.
• the compressed air flows from an annular opening which is formed by a central bore in the air cap and the paint nozzle arranged therein. Further air jets from different air cap holes serve to regulate the jet shape and aid atomization. Due to the compressed air flowing out at high velocity, a negative pressure area is created directly at the paint nozzle orifice, which, especially in the case of the unpressurised paint supply from a so-called suction cup, supports the paint outflow through its suction effect (H. Kittel, ibid). In addition to the promotion of the paint material from a suction cup is also possible to supply the paint material depending on the volume requirement and viscosity by conveying systems such as flow cup, pressure vessel or circulation systems of the spray gun nozzle.
• Two component (2K) coating agents are predominantly sprayed due to their limited processing time (pot life).
• the dosing of base lacquer and hardener is the central problem.
• the ZK material is usually mixed manually in the specified ratio and sprayed like a one-component material.
• a fast drying and curing behavior of the paint film is desired, which is why curing catalysts are often incorporated into the base paint and / or hardener of the 2K or multi-component mixture.
• WO 93/13872 A1 describes a method for applying a multicomponent refinish coating composition in which at least two paint components are held in separate containers and at least one component is supplied under pressure to a kinetic dosing system comprising two piston-mounted double-acting cylinders with cylinder rods , The metered components are fed to a mixer, which opens into a paint spray gun.
• the structure of the metering device is rather complex.
• WO 2013/104771 A1 discloses a device for conveying, metering and mixing liquid paint components, comprising a paint supply device which comprises two or more paint reservoirs, each with at least one outlet opening for different paint components to be mixed with one another; or a paint reservoir comprising two or more chambers for different paint components to be mixed together, each chamber having at least one outlet port.
• the device further comprises a metering device, which is connected downstream of the paint supply device and has a number of outlet openings of the paint reservoir or paint reservoir corresponding number of inlet openings for the paint components, wherein the metering device is designed so that the volume flows entering via the inlet openings of the mixed Paint components separated from each other are positively conveyed via serving as dosing units, rotating conveyors and the conveyors are connected together so that their speeds are in fixed proportions to each other, and wherein the metering device has separate outlet openings for the now metered volume flows of the paint components.
• the device has a static mixing device, which is connected downstream of the metering device and the one of the number of outlet openings of the metering corresponding number of inlet openings for the metered Has volume flows, and whose output is designed so that it can be connected to a paint spray gun.
• a simple multi-chamber cartridge for the mixing and application of multicomponent adhesives with at least two concentrically arranged chambers is described in GB 2 276 365 A.
• DE 30 31 798 A1 also discloses a squeezing device for multi-component masses, in particular Mehrkomponentenklebe-, sealing or filling compounds with juxtaposed containers, which are separated by extending parallel to the pressing device partitions.
• Each container has a pressure piece associated therewith, wherein the pressure pieces are connected to each other via a web having a cutting edge which cuts through the partitions of the container during the pressing.
• the container can be arranged coaxially to each other and the connection of the plungers can be done by a realized as a piston rod web, which can be operated for example via a gas column.
• a mixing of the components takes place in a chamber, which connects as a tip to the two containers in the pressing direction.
• the dispensing gun described in EP 2 353 733 A1 makes use of a similar construction, but the cutting edges cut the intermediate wall of the containers of the coaxial cartridge in a spiral manner.
• the ejection device according to DE 30 31 798 A1 has the disadvantage that the cut-open partition wall could prevent a further depression of the piston, which should be avoided by the helical cutting.
• DE 10 2010 019 220 A1 discloses a cartridge system with connected conveying bodies, in particular for mixing and applying a medical cement.
• the delivery pistons can be operated with gas pressure.
• a shown in the figures of this document central mixing space is closed on one side and can, if at all, only partially serve the mixing of the components. It does not replace the necessary mixing in the area of the outlet opening of the cartridge or syringe.
• the material chambers are very small due to the required path of the delivery piston, so that a poor utilization of the total volume of the device is carried out by the cement components.
• the international application WO 2016/020129 A1 discloses a metering and mixing device in which the mixing section is not arranged inside the device and just so that it adjoins the extrusion direction from the material chambers.
• the device comprises a cartridge holder and a multi-chamber cartridge arranged therein.
• the already mentioned mixing section has static mixing elements and is tubular in the central region of the Device, arranged either as part of the cartridge holder or the cartridge. Furthermore, the mixing section is aligned coaxially to the side walls of the cartridge holder and thus also to the side walls of the large area positively fitting to the holder cartridge.
• the actual cartridge has at least two chambers which are likewise arranged coaxially to the mixing section and from which components of a multicomponent system, for example a multicomponent paint, operated by compressed air and connected via webs (cutting device) can be pressed out against the flow direction of the mixing section. Via a directional valve, the components can then be transferred into the mixing section and finally mixed and fed in the mixed state of an application device.
• a multicomponent system for example a multicomponent paint
• webs cutting device
• the components can then be transferred into the mixing section and finally mixed and fed in the mixed state of an application device.
• the dividing walls between two chambers are severed with incipient displacement of the piston and thus allows a continuous displacement of the piston.
• the already described form-fitting concerns of lateral cartridge wall and lateral cartridge holder wall allows a seal, so that the above-described, initiated by compressed air piston displacement is possible.
• the device described ensures precise metering of components of multi-component systems, even if these each have a different viscosity.
• a compact overall design is obtained and still a comparatively long mixing distance and thus effective mixing of components realized.
• a device is obtained which already meets many requirements for the manual coating of multicomponent systems.
• the large-area outer wall (side wall) of the cartridge rests positively on the inner wall of the cartridge holder.
• the said inner wall of the cartridge holder and thus also the side wall of the cartridge have a preferably cylindrical shape.
• the cartridge holder is thus arranged so that all or most of the cartridge can be positively inserted into the holder.
• the holder can, for example, with a Cover for fixing the cartridge to be closed or the cartridge itself can be connected to the top of the holder via a reversible closure connection.
• the closing of the holder with a separate cover means a further step in the commissioning of the device.
• the separate lid means another, individual and thus increasing the complexity of the component.
• An alternative possibility for this is the direct closure connection of the cartridge and holder.
• it is again dependent on a difficult handling. Because by the positive concern of the cartridge and a holder necessary for common closure principles against each other to take place rotation of the two components is quite difficult to carry out.
• Another disadvantage of the device lies in the rather complicated to be ensured identification of the cartridge.
• a label also known as a belly label
• the label will usually be too thick and / or may wrinkle during the insertion process, so that an effective seal to pressurize or even insert the cartridge becomes impossible.
• it is necessary to sufficiently label the materials including, for example, hazard and safety symbols and explanations. This is difficult to realize on small labels.
• a metering and mixing device in particular for multi-component systems, which no longer has the disadvantages of the prior art. Accordingly advantageous would be a device that is very easy to connect by connecting cartridge and cartridge holder, preferably incorporating a ringgewindesch gleiches, and also disassemble and also has components that may have Entformungsschrägen, so that their production by injection molding in a very effective manner is possible. Last but not least, it would be advantageous to enable labeling on generally large side surfaces of cartridges.
• the metering and mixing device should also allow precise metering, a compact overall structure and, moreover, effective mixing of components of multicomponent systems, that is to say ultimately exhibit the outstanding properties of the device described in WO 2016/020129 A1. This is where the object of the present invention is based.
• a dosing and mixing device comprising
• an upper portion comprising a directional control valve (2.1 .1);
• a middle section (2.2) whose center is designed as a space (2.2.1) extended in the direction of the longitudinal axis of the cartridge and equipped with static mixing elements (2.2.1.1), and the space (2.2.1) of at least two chambers (2.2.1) .2) is enclosed, wherein the chambers are arranged stretched in the direction of the longitudinal axis of the cartridge and adjacent chambers by a common partition wall (2.2.4) are separated from each other and each chamber (2.2.2) with the upper portion (2.1) above each at least one opening (2.2.5) is connected; and a lower section (2.3) comprising a piston (2.3.1) for each of the chambers, the pistons (2.3.1) sealing the chambers (2.2.2) from below and interconnecting them via cutting devices (2.3.3) are connected, and the cutting devices (2.3.3) are arranged so that they the common partition (2.2.4) respectively adjacent chambers (2.2.2) when moving the piston (2.3.1) in the direction of the upper portion (2.1) to be able to sever
• multi-chamber cartridge (2) and cartridge holder (1) have mutually complementary means (5) for producing a reversible closure connection (6) of cartridge and holder and wherein between the cartridge and holder in the closed state of the reversible closure connection (6) also a flat, at least form-fitting and the entire circumference of the cartridge comprising compound which extends over a portion of the upper portion (2.1) and / or at least a portion of the lower portion (2.3) and / or only a portion of the central portion (2.2) of the cartridge.
• the present invention relates to metering and mixing devices as defined above.
• the invention relates to a method for conveying, metering, mixing and / or application of multicomponent systems using a metering and mixing device according to the invention.
• FIG. 1 shows a cartridge holder to be used according to the invention.
• Figures 1 a and 1 b show detailed views of portions of the cartridge holder comprising means (5a) for producing a reversible closure connection (6).
• FIG. 2 shows a cartridge to be used according to the invention.
• Figures 2a and 2b show detailed views of portions of the cartridge comprising means (5b) for producing a reversible closure connection (6).
• FIG. 3 shows a metering and mixing device according to the invention which comprises the components described in FIGS. 1 and 2.
• FIGS. 3a and 3b show detailed views of portions of the metering and mixing device comprising a reversible closure connection (6) in the closed state. Furthermore, areas of surface positive and non-positive connections (7b) are shown.
• FIGS. 4a and 4b show alternative regions to FIGS. 3a and 3b comprising a reversible closure connection (6) in the closed state. Both areas of surface only form-fitting connections (7a) and areas of form-fitting and non-positive connections (7b) are shown.
• FIG. 5 likewise shows an alternative region comprising a reversible closure connection (6) and a region of planar connection.
• the planar connection (7b) is again formed positive and non-positive, wherein it is not configured planar ( Figures 3a and 3b), but conical.
• Figure 6 also shows such an alternative range.
• both an area flat only positive connection (7a), as well as a range of surface positive and non-positive connection (7b) is shown.
• the space or the chamber can be shaped in particular as a cylinder or prism, in particular as a straight cylinder or straight prism, wherein the respectively existing cavity forms the space or the chamber.
• Possible are circular cylinders, elliptical cylinders or ultimately with regard to their cross-sectional area arbitrarily shaped and individually adapted prisms.
• a circular cross-sectional area in two or more be divided equal or different sized segments and thus different stretched areas (space, chambers).
• segments are partitions, such as partitions of adjacent chambers.
• almost any other geometries can be realized, for example, can also take the place of the straight hollow cylinder with annular segment-shaped cross-sectional area, individual tubes with a circular cross-sectional area.
• connection that is, the closing
• opening of the connection that is, the release
• closure connection can be realized for example by means of at least one bayonet closure or at least one screw thread closure.
• the means for producing such a closure connection are then attached to the elements to be connected and correspond correspondingly to each other (are complementary to each other).
• a Bayonettverschiuss are the corresponding ittel longitudinal slot with at the end Anteriodem transverse slot and button which is inserted into the longitudinal slot and anchored by then following rotational movement in the transverse slot.
• the corresponding means are threaded pieces which have a screw thread comprising at least one thread and a corresponding screw thread.
• Ais screw thread closure in accordance with the narrower sense so closures are considered in which the at least one thread of a screw thread has a thread pitch in the direction of torque of the closing direction.
• connection may be limited to the means (5).
• a connection extending beyond the range of the means (5) can additionally exist, which results in particular from the geometries of the elements to be connected. So it is certainly possible that there is also a surface connection. In that case, one surface of one element then bears against a surface of the other element. Of course, in each case several pairs of surfaces abut each other.
• a flat connection as described is essential in the context of the present invention. By definition, such a two-dimensional connection is distinguished from connections existing directly in the area of means (5).
• Such a flat connection can for example be configured over a large area, that is, very large sections of the elements are interconnected. This is the case, for example, in connection with the WO 2016/020129 A1 described at the outset.
• connection is to distinguish between a merely positive connection and a positive and non-positive connection.
• regions with both positive and non-positive connection (7b) While in a positive connection areas of the elements only to each other lie on or abut each other, there is an explicit force acting on the connection areas normal force in traction. In the context of the present invention, if present, this normal force and thus the frictional connection is preferably effected by connecting the means (5).
• the multi-chamber cartridge (2) of the dosing and mixing device according to the invention is designed as a coaxial cartridge for a cartridge holder (1) as defined above, the cartridge comprising the following sections:
• an upper portion comprising a directional control valve (2.1 .1);
• a middle section (2.2) whose center is designed in the direction of the longitudinal axis as a stretched space (2.2.1.1) equipped with static mixing elements (2.2.1.1), and the space (2.2.1) of at least two chambers (2.2.2 ) is enclosed, wherein the chambers are stretched in the direction of the longitudinal axis of the cartridge and coaxial with each other and the space (2.2.1) and adjacent chambers are separated by a common partition (2.2.4) and each chamber with the upper portion (2.1 ) is connected via in each case at least one opening (2.2.5); and
• a lower section (2.3) comprising a piston (2.3.1) for each of the chambers, the pistons (2.3.1) sealing the chambers (2.2.2) from below and connecting them to one another via cutting devices (2.3.3) are, and the cutting devices (2.3.3) are arranged so that they the common partition wall (2.2.4) respectively adjacent chambers (2.2.2) when moving the piston (2.3.1) in the direction of the upper portion (2.1) sever power.
• Such a structure can be obtained for example by coaxial arrangement of three nested tubes or circular cylinders.
• the inner tube encloses the space (2.2.1).
• the space between the outer surface of the inner tube and the inner surface of the middle tube forms, closed in the direction of the lower portion (2.3) by a piston (2.3.1) and in the direction of the upper portion (2.1) through an opening (2.2. 5) to the upper section (2.1) completed, a first chamber (2.2.2).
• the space between the outer surface of the middle tube and the inner surface of the outer tube closed in the direction of the lower portion (2.3) by another piston (2.3.1) and in the direction of the upper portion (2.1) through an opening ( 2.2.5) to the upper section (2.1) completed, a second chamber (2.2.2).
• the lateral walls of the chambers and the space are thus arranged coaxially.
• the generatrices of a chamber and a room are strictly parallel.
• the space (2.2.1) and the chambers (2.2.2) accordingly represent as a straight circular cylinder, which are arranged coaxially with each other.
• the cartridge (2) has a label on its large outer wall (side wall). As described above, such a label can be applied without impairing the insertion of the cartridge into the cartridge holder, since in particular the above-described positive engagement in the ultimately entire area of the large-area outer wall (side wall) of the cartridge is dispensed with.
• the dosing and mixing device according to the invention has a cartridge holder (1). This cartridge holder comprises a receptacle for the cartridge (2).
• the receptacle and its shape can ultimately be chosen arbitrarily, as long as the type of flat and at least positive connection between the cartridge (2) and cartridge holder (1) described in more detail below is realized when the closure connection (6) is closed. It is possible in this context, for example, that the receptacle covering the side walls of the cartridge into the region of the upper portion (of course without over the entire central portion positively fit, for example by appropriate geometric design of the outer side wall of the cartridge (2) and / or the lateral inner wall of the holder (1) or the lateral inner wall of the container (1.1)).
• the means (5) for producing the reversible closure connection (6) can then be arranged in the upper section (2.1), but also in the middle section (2.2) or lower section (2.3). Of course, complementary means (5) can also be present multiple times, so that the reversible closure connection (6) can comprise a plurality of closures, for example bayonet closures and / or screw thread closures.
• the receptacle (1.1) is designed as a receiving tray.
• the receptacle (1 .1) only partially covers the cartridge (2) arranged therein, ie preferably only the lower portion (2.3) or the lower portion (2.3) and a lower portion of the middle portion (2.2). the cartridge (2) covers.
• the means (5) for producing the reversible closure connection (6) are then arranged so that the at least one closure, with respect to the cartridge (2), in a lower portion of its central portion (2.2) and / or an upper portion Part of its lower section (2.3) is set up.
• exactly one closure is present.
• the described embodiment has particular advantages. On the one hand, the introduction of the cartridge described above is facilitated once again. Even if the special type of flat and at least positive connection between cartridge (2) and cartridge holder (1) described below is sufficient to achieve advantages over the prior art, a further improved handling is achieved by the construction described. Because in these embodiments, only very little air must be displaced when inserting the cartridge into the holder. Basically, because of the at least positive connection between the cartridge and the cartridge holder during the insertion process, the air between the cartridge and holder is compressed.
• the air compressed to a high pressure must be removed via a very difficult to manufacture topography of the cartridge holder surface over most of the insertion path before the positive sealing takes place.
• the counterpressure that then arises must be overcome by the painter by increased force.
• the air can be removed via a valve in the cartridge holder, which must be closed again after introduction.
• the yergewindver can basically be designed arbitrarily, provided that the above criteria are realized in terms of thread pitch of the threads.
• the screw threads of the closures can be catchy or multi-threaded.
• a thread can make one or more complete revolutions.
• a thread can make less than a round.
• screw threaded fasteners in which the corresponding screw threads have threads which make up at most one complete circulation, preferably at most one half circulation, for example one third circulation, are preferred. In this way, a very simple assembly of the metering and mixing device is ensured.
• it is then preferably multi-threaded threads. This means that a screw thread has at least two threads, preferably 2 or 3 threads. The respective corresponding screw thread then of course has the corresponding number of threads.
• the cartridge (2) and the holder (1) in the closed state of the reversible closure connection (6) there is also a flat, at least positive connection and the entire circumference of the cartridge compound which extends over a portion of the upper portion (2.1 ) and / or at least a portion of the lower portion (2.3) and / or only a portion of the central portion (2.2) of the cartridge extends.
• the means (5) and thus the reversible closure connection (6) are to be arranged and / or which geometries the
• connection encompasses the entire circumference of the cartridge. Only in this way can it be possible to realize a pressure build-up as described below. Consequently, it is also clear that the individual choice of a region or partial region is possible only via the dimensions existing in the direction of the longitudinal axis of the cartridge. Due to the fixed dimensioning, namely the circumference of the cartridge, and an individually selectable extent with respect to the longitudinal axis of the cartridge, there is a connection surface or a flat connection region.
• connection extends over a partial region of the upper portion (2.1) of the cartridge.
• the portion of the upper portion which is assigned to the lateral walls or the circumferential side wall of the cartridge, for connection to the cartridge holder, namely a portion of the lateral inner wall of the container (1.1) is provided.
• the top (front) of the cartridge and the corresponding portion of the upper portion (2.1) is obviously not suitable for such a connection, since the cartridge holder would have to be arranged correspondingly above the top of the cartridge, so that the introduction of the cartridge into the holder would be virtually impossible.
• connection extends over at least a portion of the lower portion (2.3) of the cartridge.
• the subarea of the lower section which is assigned to the lateral walls or the circumferential side wall of the cartridge, would then be provided for the connection with the cartridge holder, namely a partial region of the lateral inner wall of the container (1.1).
• the bottom of the cartridge and the corresponding portion of the lower portion (2.3) can also serve to make such a connection.
• at least a complete connection at the bottom is not very advantageous.
• components such as compressed air connection (1 .2) and connection for the application device (1.3) occupy a certain volume within the cartridge holder, so that a complete connection of the cartridge and holder in this area would be possible only over an extremely complex cartridge geometry.
• a planar connection which extends only over a portion of the central portion (2.2).
• a compound based on the total length of the section (2.2), not more than 50%, preferably not more than 25%, more preferably not more than 10%, from.
• connection positions it is also possible to realize two or more of the above-mentioned connection positions.
• the bonding area based on the total length of the cartridge, does not extend beyond 30%, preferably not more than 15%, more preferably not more than 5%.
• each individual area is designed to be extensive, at least form-fitting and the entire circumference of the cartridge.
• this does not preclude the existence of further connection surfaces, which for example do not cover the entire circumference of the cartridge.
• planar connection it is preferred for the planar connection to extend over an upper portion of the lower portion (2.3) of the cartridge and / or a lower portion of the central portion (2.2).
• the geometric shapes of the cartridge and cartridge holder are designed and matched to one another such that a positive connection is not realized before the end of the insertion process of the cartridge into the cartridge holder.
• a positive connection is not realized before the end of the insertion process of the cartridge into the cartridge holder.
• the planar connection is at least partially both positive and non-positive. As described above, this can be achieved by abutting surfaces of cartridge (2) and holder (1), which are not arranged strictly parallel to the torque of rotation of the inserted closure, in particular preferably of the screw thread closure (see also FIGS. 3a, 3b, 4a) , 4b, 5 and 6). In the context of the present invention, therefore, if present, the frictional connection is preferably effected by connecting the means (5).
• a form-fitting and non-positive planar connection which is present in accordance with the invention is one which also exists without pressurization. Any pressurization of the cartridge onto the holder, which may occur in particular in the area of only positive-locking areas (7a), is not comparable to an actual non-positive connection.
• these preferably contain different components to be mixed for use as conveying, metering and mixing units in the individual chambers.
• masterbatches and their hardeners can be stored separately in the chambers of the cartridges or low-viscosity liquids that build up only after their mixing a higher viscosity or thixotropy.
• differently colored components such as, for example, a black filler component and a white filler component can also be mixed into a gray blend in this way.
• the components to be mixed can be stored separately in the required proportions for later application.
• the volumes of the chambers are defined by the diameters of the tubes.
• the volume flows of the components such as, for example, the master varnish and hardener, are fed to one another separately from the directional control valve (2.1.1) of the upper section (2.1).
• the directional control valve (2.1.1) is particularly preferably a 3/2-way valve (2.1.1).
• the directional control valve (2.1.1) or 3/2-way valve (2.1.1) can, in a preferred embodiment, also have a premixing chamber integrated in the directional control valve (2.1.1), in which the initially separate volume flows of the components meet and can mix , If the directional control valve (2.1.1) is in the "dosing / mixing" position, ie in the working position, the components which are premixed either in the premixing chamber integrated in the directional control valve (2.1.1) or as far as possible in the absence of such a premixing chamber
• the mixing section is provided by the stretched space (2.2.1.1) equipped with static mixing elements (2.2.1.1), whereby the entire space (2.2.1) can have static mixing elements (2.2.1.1)
• the pistons (2.3.1) press pneumatically driven the appropriate components from their Chambers in the upper section (2.1) of the multi-chamber cartridge (2).
• the cutting device (2.3.3) which connects the piston (2.3.1)
• the partition wall (2.2.4) is severed between the chambers, whereby only a further emptying of the chambers is possible.
• the cutting device (2.3.3) connects the pistons (2.3.1) serving as the bottom of the chambers, thereby also ensuring that the pistons (2.3.1) are moved simultaneously under pressure and thus, even at strongly different viscous components, the pressing out of the components from the chambers in the ratio of the chamber sizes to each other and thus takes place independent of viscosity.
• the emptying is therefore done in the predetermined by the chamber size volumes and thus in the desired dosage.
• the components stored in the separate chambers can thus, after leaving the chambers (2.2.2) through the openings (2.2.5), either already in a premixing chamber integrated in the directional control valve (2.1 .1) of the upper section (2.1), an optional section between the directional control valve (2.1 .1) and the first static mixing elements (2.2.1 .1) or in contact with the static mixing elements (2.2.1.1) come into contact with each other.
• the described mixing is achieved via static mixing elements in the form of a mixed raw rs with fixed internals.
• mixer rods can be used.
• Very particularly preferred mixer bars are, for example, from the company Fluitec Georg AG (Neftenbach, Switzerland) under the name CSE-X® mixer or from the company Industra GmbH (Heusenstamm, Germany) under the name "mixing element" with the article number 205059 (76-104 ) available.
• the cartridge holder (1) has a compressed air connection (1 .2), which is preferably arranged at the bottom of the receptacle (1 .1) and a connection (1 .3) for an application device. Placement of the compressed air connection (1.2) is such that the compressed air flowing in during operation moves the piston (2.3.1) serving as the bottom of the chamber, so that the components can be forced out of the chambers.
• the cutting device (2.3.3) for cutting the wall between two adjacent component chambers (2.2.2) is preferably designed as a wedge-shaped gap, similar to an open scissors. Thus, a material compression can be prevented when cutting the partitions and at the same time the Anschneidekraft be reduced.
• the components to be mixed transferred into the mixing section and thus into the stretched space (2.2.1) must of course be fed to the application device after they have been thoroughly mixed. This is apparently done via the annex (1.3). Accordingly, the mixed components are supplied to the attachment (1.3), for example via an extension of the preferably cylindrical (tubular) space (2.2.1) in the lower portion of the cartridge and fluid-conducting connection of this space with the Anschiuss (1.3).
• connection of the terminal (1.3) at the bottom of the receiving tray (1.1) of the cartridge holder (1) with an application device is not a problem and can be done with all common compounds, preferably by a screw thread or Schnelikupplept or dovetail connections. It is also possible to integrate static mixing elements in the connection (1.3) and / or to position the static mixing elements (2.2.1.1) of the space (2.2.1) extended up to the connection (1.3).
• any type of application device is suitable as the application device.
• the application devices are used to apply the mixed components, which are preferably coating agents such as paints, fillers, sealants or adhesives, to substrates.
• coating agents such as paints, fillers, sealants or adhesives
• a very particularly preferred application device is spray guns, preferably those for spray application of coating compositions.
• connection (1.3) at the bottom of the receptacle (1 .1) of the cartridge holder (1) with the spray gun is unproblematic and can be done with all common compounds, preferably by a screw thread or quick couplings or dovetail connections.
• Paint spray guns are available, for example, from Sata GmbH & Co. KG (Kornwestheim, Germany) under the name SATAjet®, as HVLP or RP spray guns.
• All components and materials of the dosing and mixing device are chosen so that they are designed for the pressures occurring and their intended function and chemically largely inert to the mixed and the mixed components.
• pistons (2.3.1) are usually suitable polyethylenes and / or composite materials and as a material for the cutting device (2.3.3) polycarbonate and / or polyoxymethylene.
• the metering and mixing device and its components are not limited to these materials.
• metals, for example, for the execution of the cutting device (2.3.3) can be used or coated materials, for example, to allow an inert behavior against any chemically aggressive components.
• the cleaning of the metering and mixing devices according to the invention can be carried out in a simple way via the directional control valve (2.1 .1), wherein the multi-chamber cartridge (2) during cleaning in the receptacle (1.1) may remain.
• the directional control valve (2.1 .1) located in the upper section (2.1) of the multi-chamber cartridge (2) is moved from its "dosing / mixing" operating position into the "flushing" cleaning position.
• the components can be pushed out of the chambers into the directional control valve (2.1 .1), with simultaneous shut - off of the flushing connection (4), while in the Cleaning mode "rinsing" the supply of the components from the component chambers is interrupted and the central mixing channel can be connected to a rinsing connection (4)
• the rinsing takes place with a rinsing medium, preferably with commercially available solvents and / or water, the rinsing medium being desired or required
• the flushing medium should be able to dissolve the components of the multicomponent system and any reaction products as completely as possible, during purging, the flushing medium will pass through the static mixing elements After cleaning, the multi-chamber cartridge (2) can be easily removed from the metering and mixing device and stored.
• the present invention also relates to a method for conveying, metering and mixing of two or more components, preferably paint components, adhesive components or Dichtmitteikomponenten, more preferably paint components, which makes use of the metering and mixing device according to the invention.
• the present invention relates to a method for coating substrates with 2-component (2K) or multi-component coating compositions using the metering and mixing device according to the invention in combination with an application device, preferably a paint spray gun.
• the coating process according to the invention is particularly advantageously carried out purely manually.
• the inventive method for coating using small amounts of paint is suitable.
• the process is carried out as HVLP spraying or RP spraying.
• HVLP spraying or RP spraying Most preferably, it is used in automotive refinish.
• the aforementioned method can also be used in the context of OEM OEM painting especially in the so-called assembly repair.
• the inventive method for coating substrates with 2K or multi-component coating compositions using the inventive Dosing and mixing device in combination with an application device comprises in a particular embodiment, a rinsing step.
• the application of the 2K or multi-component coating agent is interrupted once or several times, the multi-chamber cartridge (2) is cleaned within the interruption of the application and the application is after cleaning the multi-chamber cartridge (2) with the same multi-chamber cartridge (2) or continued another multi-chamber cartridge (2) according to the invention.
• the static mixing device that is to say the space (2.2.1) and the mixing elements (2.2.1.1) arranged therein, are flushed in the metering and mixing device according to the invention.
• the process is carried out as an HVLP spraying process, then the atomization pressure is usually 1.5 to 2 bar. In the case of RP guns, work is usually carried out at an atomization pressure of 1.5 to 3 bar.
• one component may be, for example, a so-called parent lacquer and the second component may be a hardener tailored to the master lacquer.
• the masterbatches are preferably hydroxy-functional polymers such as polyhydroxy-functional poly (meth) acrylates, polyester polyols, polyether polyols, polyurethane polyols or mixed polyester / polyether polyols used. Polythiols, for example, can be used.
• the hardener components are usually polyisocyanates such as hexamethylene diisocyanate, tolylene diisocyanate, isophorone diisocyanate or diphenylmethane diisocyanate or the dimers, trimers and polymers of the aforementioned isocyanates, and / or aminoplast resins such as melamine resins used.
• polyisocyanates such as hexamethylene diisocyanate, tolylene diisocyanate, isophorone diisocyanate or diphenylmethane diisocyanate or the dimers, trimers and polymers of the aforementioned isocyanates, and / or aminoplast resins such as melamine resins used.
• epoxy systems both conventional and aqueous. Of course, it is also possible to use those systems which only become reactive at the time of exposure to atmospheric moisture (for example aldimines, silanes).
• parent lacquer and hardener have compounds with complementary functional groups. That is, groups that react with each other
• the following complementary groups may be mentioned: amine / isocyanate, hydroxy / isocyanate, Thiol / isocyanate, amine / epoxy / isocyanate, amine / epoxy, epoxy / anhydride, epoxy / carboxyl, amide anhydride, anhydride / hydroxy, hydroxy / isocyanatoWAmin, or Carbodiimide / carboxyl, thiol / ene, amine / cyclocarbonate, hydroxyl / cyclocarbonate, amine / hydroxyl / cyclocarbonate, alpha, beta unsaturated carbonyl / amine and / or thiol, oxazoline / Carboxyl, silane / silane, silane / hydroxyl groups.
• base lacquer and hardener react after application at temperatures of 0 to 100 ° C, preferably 10 to 80 ° C, that is under conditions conventional refinish conditions.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Accessories For Mixers (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Nozzles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

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Family Applications (1)

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• 2018
  • 2018-08-15 CA CA3072285A patent/CA3072285A1/en not_active Abandoned
  • 2018-08-15 US US16/642,519 patent/US11389812B2/en active Active
  • 2018-08-15 AU AU2018326211A patent/AU2018326211A1/en not_active Abandoned
  • 2018-08-15 JP JP2020512661A patent/JP2020531275A/ja active Pending
  • 2018-08-15 CN CN201880056220.2A patent/CN111032228A/zh active Pending
  • 2018-08-15 WO PCT/EP2018/072102 patent/WO2019042772A1/de unknown
  • 2018-08-15 EP EP18752166.1A patent/EP3676017A1/de not_active Withdrawn

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