DE202010016702U1 - Device for producing a ready-to-use filler by mixing a binder and a hardener component - Google Patents

Abstract

Apparatus (10) for mixing at least two components, in particular a binder component (A) arranged in a can-shaped container (40) with an outlet opening arranged centrally or eccentrically in the container bottom plate (41) and having a circular or other geometric shape (42) having a hardener component (B) arranged in a cartridge-type container (50) with an outlet opening (52) formed in the container bottom plate (51), to form a pasty mix for producing a ready-to-use filler for filling surfaces of vehicle bodies, wherein the hardener component (B) consists of a hardener paste without or with in this enclosed micro-air bubbles with the property after pressure load and pressure relief to achieve an automatic outflow of a small amount of hardener to relax, and wherein the device (10) is a device component ( 20), in which the with pressurizable sliding floors (43; 53) provided in their interiors containers (40, 50) are arranged vertically or horizontally lying and in the vertical or horizontal lying a device plate ...

Description

The present invention relates to a device for producing a ready-to-use filler compound by mixing a binder and a hardener component according to the preamble of claim 1.

Such devices for mixing at least two components are used, for example, in the production of fillers, wherein a hardener component with a 1 ... 2% content of a binder component is mixed to produce a curable filler. The mixing device has for the supply of the respective components inlet openings, via which the components are added into the mixing chamber. The components are stored in upstream receptacles such as cartridges or the like, the mixing device being part of a means for providing putties.

Such a device for producing a ready-to-use filling compound for the filling of surfaces, which relate, for example, to vehicle bodies, is known from US Pat DE 203 07 518 U1 known. The apparatus has two reservoirs arranged at a base station, of which one is filled with a binder component, namely a putty component, and the other with a hardener component. By means of a metering device, the two components are each fed via a supply channel continuously to a mixing chamber in which the components come into contact with each other. The mixing chamber is formed from a tube section of a flexible tube, on the outside of which press rollers engage, which compress the tube section and simultaneously drive around a longitudinal axis. Due to the friction occurring and the adhesion of the components to the inner wall of the tube, the components are mixed together. After the mixture has passed through the tube section, it arrives at an outlet opening provided on the tube, where it emerges continuously from the tube. The tube wall is made of an airtight plastic, so that the air surrounding the tube during the mixing process does not get into the mix and can be trapped in this in the form of pores or voids.

The EP 1 900 443 A2 describes a device system for producing a ready-to-use putty by mixing a binder and a hardener component. This device system for mixing at least two components, in particular a binder component A and a hardener component B, to a pasty or liquid mixture for producing a ready-to-use filler for filling surfaces, for example vehicle bodies, comprises a support plate with an inlet opening for the supply of the binder component A from a storage container arranged on the support plate and with at least one further inlet opening for the supply of the hardener component B from a reservoir arranged on the support plate and outlet openings connected to the inlet openings via supply channels in the support plate, and a Functionally connectable to the support plate mixing device with a number of outlet openings in the support plate corresponding number of corresponding with the outlet openings of the mixing device, the a ho hlzylinderartigen stator having a discharge opening formed in its wall for the mix and a concentrically arranged in this rotatable about a longitudinal axis rotor part with an annular gap formed between the stator and the rotor part mixing chamber, wherein a plurality of integrally formed on the stator first mixing teeth radially inwardly and a plurality of Rotor part integrally formed second mixing teeth extend radially outwardly into the mixing chamber in order to move by means of a rotational movement of the rotor member in the stator, the mixing teeth against each other to create a mixing of the components A and B, wherein the stator at least one, preferably two connected to the mixing chamber Having inlet openings for the hardener component B and wherein the first mixing teeth are arranged on at least a first mixing tooth plane and the second mixing teeth on at least one second mixing tooth plane, wherein the mixing tooth planes axially in Rich tion of the longitudinal axis are staggered to each other in a stile, so that the second mixing teeth of the rotor part in the respective spaces of the first mixing teeth of the stator rotate radially, with several mixing teeth planes are provided on the rotor part and / or on the stator, preferably the number of mixing tooth planes on the rotor part and on Stator part are the same, for the functional connection between the mixing device and the support plate, the stator at its end facing away from the inlet openings an annular support carries, which has Befestigungsdurchbrechungen and the bayonet-like detachable, lockable and rotatably connected to the stator, the rotation by means of stops is limited such that a fit of the inlet opening for the binder component A in the mixing device with the corresponding outlet opening in the support plate and at the same time a fit of the inlet openings for the hardener component B in the mixing device is achieved with the corresponding outlet openings in the support plate.

This mixing device has a hollow cylinder-like stator part and a rotor part rotatably received in this concentric about a longitudinal axis and the mixing chamber between the stator and the rotor part ringpaltartig formed, wherein a plurality of molded on the stator first mixing teeth radially inwardly and a plurality of second rotor teeth integrally formed on the second mixing teeth radially extend outwardly into the mixing chamber to move by means of a rotational movement of the rotor part in the stator, the mixing teeth against each other and to provide a mixing of the two components, wherein the stator at least one, preferably has two connected to the mixing chamber inlet openings for the hardener component

Before the beginning of each mixing process namely before the feed of the binder component or before the start of the continuous mixing process with the rotational movement of the counter-rotating mixing teeth of the mixer, an amount of 0.1 grams to 0.5 grams, preferably 0.2 grams pasty or liquid hardener component injected into the mixing chamber, whereupon the feed of the binder component and the inflow of the hardener component takes place.

And this injection of a minimum amount of hardener component is triggered and monitored by the controller. By injecting or injecting a small amount of pasty or liquid hardener component before or at the beginning of each continuous mixing process in the mixing chamber of the device faulty mixing results are to be avoided, because without this pre-injection always leads to faulty mixing results. This is because the mixing ratio is up to 2% to 98% of binder component and hardener component. The initial amount, which is about 1 cm ³ , then contains either no hardener or so much reduced amount of hardener that it can partially come to deficient curing. A useful cure result is therefore achieved with a benzoyl peroxide content (50% paste) between 0.8% to 5%. If this proportion is not met in over- or under-dosage, then quality problems arise in the mix. The underdosing leads to insufficient final hardness. The overdose leads to an undesirable enrichment of the binder component (putty) with plasticizer, which is about 50% contained in the hardener paste. If these guideline values are not adhered to when curing the final product, then there will be incorrect final results during painting.

However, this advance of the injection of a small amount of hardener component before the beginning of the actual feed of binder component and hardener component for the mixing process is not sufficient to a homogeneous mixing of at least two components for producing a ready-to-use fully curable filler without air pockets to reach. What is due to the fact that the hardener component has to travel a relatively long way until it enters the mixing device, because the distance between the outlet opening and the device plate or support plate of the device and the inlet opening of the mixing chamber of the mixing device is relatively large, so that in the mass of the hardener component trapped and entrained air bubbles are transported into the mixing chamber and are not completely eliminated when mixing the hardener component with the binder component by the rotational movement of the mutually running mixing teeth of the mixing device.

Based on this, the present invention seeks to provide a device for a homogeneous mixing of two components and a hardener component, for producing a ready-to-use fully curable filler, wherein the hardener component from the outlet of the outlet opening, the container for the two components bearing device plate to the mixing chamber of a mixing device of the device has a very small path, preferably a distance of 1 mm, at a diameter of the flow channel of 1.5 to 1.6 mm has to travel to save by shortening the way Wegzeit up the binder component meets the hardener component, so that the first part of the binder component emerging from the outlet opening already contains the necessary amount of hardener of about 2% and thus a uniform time to gelation of 2 to 3 minutes is achieved.

This solution is specified in claim 1.

• a) dass die Zuführung der Binder-Komponente A und der Härter-Komponente B vermittels Steuereinrichtungen zur Mischkammer der Mischvorrichtung derart erfolgt, dass eine geringe Menge an Härter-Komponente B durch Expansion der Mikro-Luftbläschen als Vor-Einspritzung gegenüber der Zuführung der Binder-Komponente A zur Mischkammer zugeführt wird, wobei das Gerät für eine wirksame Expansion der Mikro-Luftbläschen einen zur Hälfte oder zu dreiviertel mit Härter-Komponente B befüllten kartuschenartigen Behälter aufweist, wobei die Austrittsöffnung in der Geräteplatte für den Austritt der Härter-Komponente B in einem Abstand von der Eintrittsöffnung der Mischkammer von bevorzugter Weise 1 mm für eine Weglänge von 1 mm für den Fluss der Härter-Komponente B in die Mischkammer angeordnet ist, wobei der Zuführungskanal für die Härter-Komponente in der Geräteplatte in einem benachbart zur Austrittsöffnung in der Geräteplatte liegenden Abschnitt einen Durchmesser von bevorzugter Weise 1,5 mm bzw. 1,6 mm aufweist, und wobei vor Beginn des kontinuierlichen Mischprozesses vermittels der Expansion der Mikro-Luftbläschen eine Menge von 1,2 Gramm bis 5 Gramm, bevorzugterweise 0,2 Gramm Härter-Komponente B eingespritzt bzw. injiziert wird, und/oder
• b) dass der Zuführungskanal für die, gegenüber der Viskosität der Binder-Komponente A eine geringere Viskosität aufweisende Härter-Komponente B einen Durchmesser von 1,5 mm bis 1,6 mm aufweist, wobei die Mischvorrichtung an der Geräteplatte im Bereich deren Austrittsöffnungen für die beiden Komponenten A und B derart angeordnet ist, dass die Austrittsöffnung für die Härter-Komponente B in der Geräteplatte an der Eintrittsöffnung bzw. Eintrittsbohrung für die Härter-Komponente B der Mischkammer anliegt und mit dieser deckungsgleich ist, wobei der Abstand der Austrittsöffnung zur Eintrittsöffnung der Mischkammer der Wandstärke der Mischkammerwand von bevorzugterweise 1 mm beträgt, so dass die Weglänge für den Fluss der Härter-Komponente B von der Austrittsöffnung in der Geräteplatte in die Mischkammer der Wandstärke der Kammerwand entspricht.

Thereafter, the invention consists in a device according to the preamble of claim 1, which is designed so

• a) that the supply of the binder component A and the hardener component B by means of control means to the mixing chamber of the mixing device is such that a small amount of hardener component B by expansion of the micro-air bubbles as pre-injection compared to the supply of binder Component A is supplied to the mixing chamber, the device for effective expansion of the micro-air bubbles having a half or three quarters filled with hardener component B cartridge-like container, wherein the outlet opening in the device plate for the exit of the hardener component B in a Distance from the inlet opening of the mixing chamber preferably 1 mm for a path length of 1 mm for the flow of Hardener component B is arranged in the mixing chamber, wherein the supply channel for the hardener component in the device plate in a lying adjacent to the outlet opening in the device plate section has a diameter of preferably 1.5 mm or 1.6 mm, and wherein before the start of the continuous mixing process, by means of the expansion of the micro-air bubbles, an amount of 1.2 grams to 5 grams, preferably 0.2 grams of hardener component B is injected or injected, and / or
• b) that the supply channel for, compared to the viscosity of the binder component A having a lower viscosity hardener component B has a diameter of 1.5 mm to 1.6 mm, wherein the mixing device on the device plate in the region of the outlet openings for the two components A and B is arranged such that the outlet opening for the hardener component B in the device plate at the inlet opening or inlet hole for the hardener component B of the mixing chamber and is congruent with this, wherein the distance of the outlet opening to the inlet opening of Mixing chamber of the wall thickness of the mixing chamber wall of preferably 1 mm, so that the path length for the flow of the hardener component B from the outlet opening in the device plate in the mixing chamber corresponds to the wall thickness of the chamber wall.

Thereafter, there is a first technical solution is that due to the structural design of the device, the expansion of the micro-air particles or micro-air bubbles in the mass of the hardener component B is exploited, the expansion only works effectively when the cartridge-like container for the hardener component B is about half or quarter filled, because the lower the cartridge-like container is filled, the lower the pressure of the micro-air inclusions in the mass of the hardener component B. At very low filling the pressure is sufficient not enough to achieve a useful pre-injection. For this reason, it is necessary that the filling of the cartridge-like container is such that sufficient pressure is available that allows the mass to be compressed, with the result that upon release of the pressure on the micro-air pockets, it will collapse and thus the mass can not expand, so that for pre-injection the required amount of hardener component B can flow into the mixing chamber of the mixing device.

Therefore, the invention provides that the outlet of the hardener component B is laid so far that the hardener component only has to travel a little way, so almost only by the material thickness of the mixing chamber of the mixing device of 1 mm, to effectively as a pre-injection In particular, the binder component A is significantly more viscous in viscosity than the viscosity of the hardener component B. It is therefore necessary for the mixing device to remain on the device until a new mixture is made.

Surprisingly, it has been found that by tracking the exit opening for the hardener component B on the cartridge-like container or on the device plate up to the inlet opening for the hardener component B of the mixing device into the mixing chamber of the mixing device irregularities in the mixing of the two Components A and B and in the preparation of the filler after completion of the mixing process and in the then later hardened filler will mix after their processing.

The micro-air bubbles present in the hardener component B, which is preferably a benzoyl peroxide paste or a cyclohexanone peroxide paste, ie the air bubbles, are used here to achieve a very small amount of hardener component B for the pre-injection in the mixing of the binder component A, which is a polyester composition, used with the benzoyl peroxide paste of the curing agent component B. In the preparation of the benzoyl peroxide paste from Bezolychlorid in a water bath for cooling is cooled with ice. If the water temperature rises during the reaction, the more ice melts. The benzoyl peroxide has crystalline structure. Later, a reaction with a plasticizer takes place. In this case, small amounts of air are included. A paste of benzoyl peroxide and plasticizer contains a very small amount of micro-air bubbles, which cause a low compressibility of the material. However, this effect is different depending on the filling level of hardener component in the cartridge-like container, with the result that in a complete filling of the cartridge-like container with the hardener component B, a high compressibility by the plurality of micro-air bubbles in the Hardener mass is achieved and this compressibility allows a flow of hardener component B to the mixing device, especially since it is sufficient for a completely filled cartridge-like container with hardener component that a Nachdrück effect arises sufficient to already a small amount of about 0, To press 1% of hardener component B in the mixing chamber of the mixing device, so that at the beginning of the tapping already passes a lot of hardener component B for pre-injection into the mixing chamber. The injected or injected by means of the expansion of the micro-air bubbles in the mixing chamber of the mixing device Amount of hardener component B is 0.1 gram to 5.0 grams, preferably 0.2 gram.

This flow of injection of a small amount of hardener component before the beginning of the actual feed of binder component and hardener component for the mixing process is no lead to achieve a proportional application of the binder component and the hardener component, because the hardener Component must not be more than 4%, because otherwise unacceptable reactions occur and u. a. Also, a peroxide bleaching action of the colorant pigments contained in the hardener component may occur.

A second technical solution that can also be combined with the first technical solution is that the flow channel for the hardener component B in the device plate has a diameter of 1.5 to 1.6 mm, so that the way the hardener mass is just as large as the wall thickness of the mixing device, namely 1 mm. Due to the low viscosity of the hardener component B, mixing with the supplied binder component B in the mixing zone thus occurs immediately, resulting in a slight pre-injection, or pre-injection is unnecessary. The pre-injection may thus be wholly or only partially necessary. By shortening the path from the outlet opening in the device block to the mixing chamber of the mixing device Wegzeit is saved until the binder component A meets the hardener component B, then with the help of the rotational movement of the rotor of the mixing device and the mixing teeth with each other mixed. The combination of the hardener component with the low viscosity and the resulting thin liquid plus rotational movement of the rotor of the mixing device leads to the result of a mixing of the two components A and B from the beginning, as already at the meeting of the two components A and B, so that the first part of the binder component A, which emerges from the outlet opening of the device plate, already contains the necessary amount of hardener component B of about 2%, whereby a uniform time until gelation, namely 2 to 3 minutes is reached.

Particularly advantageous is the arrangement of a check valve in the supply channel in the device plate for the supply of the hardener component B to the mixing device, because thereby a reflux of the hardener component B after cancellation of the pressing pressure on the hardener mass in the supply channel for the hardener component B in the Device plate is prevented. It is prevented by this technical embodiment, any reflux, so that no malfunction can occur.

Furthermore, the invention comprises the use of a device for mixing at least two components, in particular of a binder component A with a hardener component B in a pasty mix for producing a ready-to-use filler for filling surfaces of vehicle bodies with the features of the claims to shorten the path of the hardener component B to the binder component A to obtain a uniform time to gelling the two components of 2 to 3 minutes.

Further, the invention improving measures are specified in the dependent claims or are shown in more detail below with the description of the invention with reference to the figures, which are also the subject of the invention.

Show it:

1 a schematic perspective view of a mixing device for producing a ready-made filler with two vertical containers for the binder component and the hardener component, with a device plate and with a mixing device for the two components,

2 a schematic perspective view of a mixing device for producing a ready-made filler with two horizontal containers for the binder component and the hardener component, with a device plate and with a mixing device for the two components,

3 a schematic perspective view of the mixer for producing a ready-made filler with two containers for the binder component and the hardener component, with the device plate and with a mixing device for the two components, wherein the flow path of the two components from the two containers to the mixing device indicated by arrows,

4 a perspective view of a part of the device for producing a ready-made filler with inserted into the device plate containers for the binder component and the hardener component and with inserted mixing device,

5 a perspective view of the plate or block-shaped device plate with the inlet openings and the outlet openings for the binder component and the hardener component and with the inlet openings and the outlet openings connecting supply channels,

6 a section of the device plate having a supply channel for the hardener component with a smaller diameter supply channel section and with attached mixing device in a vertical section,

7 a further representation of a portion of the device plate with the supply channel for the hardener component and with attached mixing device in a vertical section,

8th a further representation of a portion of the device plate with the supply channel for the hardener component and with attached mixing device with leaked mix partly in view, partly in a vertical section,

9 an enlarged view of a portion of the device plate with a small diameter portion of the supply channel for the hardener component and with attached mixing device, partly in view, partly in a vertical section,

10 a portion of the device plate with the supply channel for the hardener component and attached mixing device, wherein in the supply channel a check valve is inserted, partly in view, partly in a vertical section,

11 an enlarged view of a portion of the device plate with inserted in the supply channel for the hardener component check valve, partly in view, partly in a vertical section,

12 a further enlarged view of a portion of the device plate with inserted in the supply channel for the hardener components check valve, partly in view, partly in a vertical section,

13 a further enlarged view of a portion of the device plate with inserted in the supply channel for the hardener components check valve, partly in view, partly in a vertical section,

14 a perspective view of the consisting of a stator and a rotor part mixing device with inlet openings for the supply of the binder component and the hardener component

15 a perspective exploded view of the mixing device with the stator and the rotor part, and

16 a perspective view of the stator of the mixing device with inlet openings for the binder component and the hardener component.

The figures are exemplary technical embodiments of the present invention; These are also the subject of the invention.

This in 1 illustrated device 10 for producing a ready-to-use putty for filling surfaces, for example those of vehicle bodies, by mixing a binder component A with at least one hardener component B comprises one in a device component 20 ( 4 ) arranged plate-shaped or block-like device plate 30 made of a metallic material or plastic with an inlet opening 31 for the binder component A and an inlet opening 32 for the hardener component B. Furthermore, the device plate 30 an outlet opening 33 for the binder component A and an outlet opening 34 for the hardener component B on. The entrance openings 31 . 32 are via feeder channels 35 . 36 with the outlet openings 33 . 34 connected ( 1 . 2 . 3 and 5 ).

The device component 20 is in a pedestal 21 ( 4 ) or placed on a support plate and takes the device plate 30 on, as a base plate for a can-shaped container 40 for the binder component A and for a cartridge-like container 50 for the hardener component B. The two containers 40 . 50 show in their bottom plates 41 . 51 outlet openings 42 . 52 on, the center or off-center in the bottom plates 41 . 51 are arranged and have a circular or other geometric shape ( 3 ).

Furthermore, the containers have 40 . 50 in their interiors pressurizable sliding floors 43 . 53 on top of the contents of both containers 40 . 50 rest and the means of hydraulic or electric motor operated piston rods are displaceable in the direction of arrow x, y are displaceable when component mass from the containers 40 . 50 to be pressed out ( 3 ).

The containers 40 . 50 are with their outlet openings 42 . 52 on or on the device plate 30 arranged such that the outlet openings 42 . 52 with the inlet openings 31 . 32 the device plate 30 correspond, with both containers 40 . 50 such with the device plate 30 are firmly connected, that the support-shaped outlet openings 42 . 52 airtight in the inlet openings 31 . 32 the device plate 30 intervention.

At the in 1 shown embodiment, the device 10 a horizontally arranged devices plate 30 on top of which the containers 40 . 50 be arranged vertically.

In the 2 embodiment shown shows a device 10 in which the device plate 30 is arranged vertically, with the container 40 . 50 lying horizontally with the device plate 30 get connected.

The mixing of the binder component A with the hardener component B takes place by means of a in the device 10 arranged mixing device 60 ( 1 . 2 . 3 and 4 ).

The 3 and 5 show the flow of binder component A and hardener component B from the containers 40 . 50 through the device plate 30 to the mixing device 60 , Become binder component A and hardener component B from their containers 40 . 50 pushed out, then binder mass and hardener mass in the direction of arrow x1, y1 in the inlet openings 31 . 32 the device plate 30 pressed and arrive in the direction of arrow x1, y1 on the supply channels 35 . 36 (Arrow direction x2, y2) to the outlet openings 33 . 34 in the device plate 30 and from there into entrance openings 64 . 65 (Arrow direction x3, y3) of the mixing device 60 in which the two components A, B are mixed with each other to the ready-to-use filler SM. The putty then exits the outlet 66 of the mixing device in the direction of arrow x4 ( 3 . 4 and 5 ).

The mixing device 60 according to 14 . 15 and 16 includes a stator part 61 and a rotor part 62 which is in the stator part 61 used and rotatably mounted in this. At C, the drive for the rotor part engages 62 at ( 14 ). The motor drive for the rotor part 62 is in the device component 20 of the device 10 arranged, which also drives the piston rods to move the sliding floors 43 . 53 the container 40 . 50 receives. For supplying the binder component A and the hardener component B, the stator part 61 inlet openings 64 . 65 on that with the outlet openings 42 . 52 the device plate 30 correspond when the mixing device 60 on the device plate 30 attached or attached to this.

To illustrate the supply of the two components A and B respective arrows are marked with x4 and y4 ( 14 ). Should be a supply of hardener components from two cartridge-type containers 50 be required, then points the mixing device 60 another entrance opening. The device plate 30 In this case, it is correspondingly designed to remove the hardener component B from the second cartridge-type container 50 into the mixing device 60 to convict.

The mixing device 60 has a hollow cylinder-like stator part 61 with an outlet opening formed in its wall 66 for the delivery of the mixed material ( 4 and 16 ). The rotor part 62 is in the stator part 61 concentrically arranged and rotatable about a longitudinal axis LA ( 15 ). Between the stator part 61 and the rotor part 62 the mixing device 60 is an annular gap-like mixing chamber 63 educated ( 16 ). The stator part 61 has several first mixing teeth 67 on, on the inner wall surface of the stator 61 are formed and extending radially inward into the mixing chamber 63 extend into it. On the outer wall surface of the rotor part 62 are also several second mixing teeth 68 molded, extending outward into the mixing chamber 63 extend into it. The arrangement of the mixing teeth 67 . 68 is such that during a rotational movement of the rotor part 62 in the stator part 61 the mixed teeth 67 . 68 move against each other to create a mixing of the two components A and B ( 14 . 15 and 16 ).

The first mixing teeth 67 are on at least a first mixing tooth plane 70 and the second mixing teeth 68 on at least a second mixing tooth plane 71 arranged, wherein the mixing tooth planes 70 . 71 axially staggered towards each other in the direction of the longitudinal axis LA, so that the second mixing teeth 68 of the rotor part 62 in the respective spaces of the first mixing teeth 67 of the stator part 61 rotate radially, with multiple mixing tooth planes 70 . 71 on the rotor part 62 and / or on the stator part 61 are provided. Preferably, the number of mixing tooth planes 70 . 71 on the rotor part 62 and on the stator part 61 equal ( 16 ).

In order to control the supply of the hardener component by means of a visual inspection, it is provided that at least the stator part 61 is formed of a transparent material, wherein the transparent material from the group of plastics comprising a polycarbonate (PC), a polymethyl methacrylate (PMMA) and / or a styrene-acrylonitrile (SAN) or PP in random quality, preferably transparent , is trained. It is also of particular advantage to color the hardener component. The supply of the hardener component is visible through the transparent stator part, so that the operator can control the supply of the hardener component of the seeing eye during the operation of the mixing device.

The rotor part 62 is advantageously formed of polyoxymethylene (POM), also called polyacetal or polyformalehyde. This material has better sliding properties with a polycarbonate or polypropylene (PP).

According to a further embodiment of the invention, the device 10 so educated that the Supply of the binder component A and the hardener component B by means of control means to the mixing chamber 63 the mixing device 60 such that a small amount of hardener component B by expansion of the micro-air bubbles in the hardener mass as a pre-injection compared to the supply of the binder component A to the mixing chamber 63 is supplied. The device 10 for efficient expansion of the micro-air bubbles, a cartridge-like container filled half or three quarters with hardener component B. 50 which can also be completely filled with hardener component. The outlet opening 34 in the device plate 30 for the exit of the hardener component B is according to the invention at a distance from the inlet opening 65 the mixing chamber 63 the on the device plate 130 attached mixing device 60 of preferably 1 mm, so that the hardener component B has a path length of 1 mm to enter the mixing chamber 63 to get. Furthermore, the supply channel 36 for the hardener component B in the device plate in a adjacent to the outlet opening 34 in the device plate 30 lying section 36a a diameter of preferably 1.5 mm or 1.6 mm. The actual supply channel 36 for the hardener component B faces the supply channel section 36a a larger diameter. Preferably, according to 9 the diameter for the feed channel 36 preferably 6.0 mm and the diameter for the feed channel section 36a 1, 5 mm. With this embodiment it is achieved that before the beginning of the continuous mixing process by the expansion of the micro-air bubbles, an amount of 0.1 grams to 5.0 grams, preferably 0.2 grams of hardener component B in the mixing chamber 63 is injected ( 6 . 7 and 8th ).

The holder of the mixing device 60 on the device plate 30 done with the in 6 shown inventive structural design, according to the mixing device 60 in the area of the outlet opening 34 for the hardener component B in the device plate 30 is inserted or clipped in an annular groove formed in this. The holder or the attachment for the mixing device 60 on the device plate 30 is designed so that the mixing device can be exchanged for a new, unused mixing device after the production of a batch of putty. At the in 7 the embodiment shown has the feed channel 36 a diameter of 6 mm and the end section has a diameter of 1.5 mm.

According to a further embodiment of the device according to the invention 10 this is designed such that without any pre-injection by means of the hardener component B a good mixing of the two components A and B and a flawless, ready-to-use filler is achieved in that the hardener component B during insertion into the mixing chamber 63 the mixing device 60 impinges directly on the simultaneously introduced binder component A and thus simultaneously subject to the mixing process. The device 10 is in accordance with 9 formed in such a way that the supply channel 36 in the area of its end section 36a for the hardener component B in the device plate 30 has a diameter of preferably 1.5 mm to 1.6 mm and that the mixing device 60 on the device plate 30 in the area of their outlet openings 33 . 34 for the two components A and B is arranged such that the outlet opening 34 for the hardener component B in the device plate 30 at the entrance 65 or inlet hole for the hardener component B of the mixing chamber 63 is present and congruent with this, wherein the distance of the outlet opening 34 to the entrance opening 65 the mixing chamber 63 the wall thickness of the mixing chamber wall 63a preferably 1 mm. The diameter of the feed channel 36 is opposite to the diameter of the feed channel section 36a taller, like the 9 shows.

Because of the distance between the outlet 34 for the hardener component B and the inlet opening 65 the mixing chamber 63 the strength of the chamber wall 63a is equal to, preferably 2 mm, the path length for the flow of the hardener component B from the outlet opening 34 to the entrance opening 65 or until it enters the mixing chamber 63 very short with the result that in the mixing chamber 63 inflowing hardener component B impinges on the simultaneously flowing binder component A. Through the rotating rotor part 62 then takes place by means of the mixing teeth 67 . 68 Mixing of the two components A and B for ready-made filler SM, on a spatula 5 submitted or filed ( 9 ).

Since the hardener component B has a lower viscosity compared to the viscosity of the binder component A, the hardener mass during pressing out of its cartridge-like container 40 as well as when passing through the feed channel 36 in the device plate 30 due to the fact that micro-air bubbles are in the hardener mass, compressed. If the pressure is taken back to the hardener mass, then the hardener mass is expanded with the result that a backflow of hardener mass takes place.

To prevent this backflow of hardener component B is in the feed channel 36 for the hardener component B, a check valve 80 arranged, whose arrangement in the feed channel 36 and its embodiment in the 10 . 11 . 12 and 13 is shown. preferably, is the check valve 80 in the feed channel section 36a arranged. In addition to a check valve 80 From a spring-loaded ball also differently designed check valves can be used.

The check valve 80 is set so that at a slight pressure on the check valve by flowing back hardener mass, the check valve is closed, so that a reflux is prevented.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 20307518 U1 [0003]
• EP 1900443 A2 [0004]

Claims (5)

Device ( 10 ) for mixing at least two components, in particular one in a can-shaped container ( 40 ) arranged binder component (A) with a in the container bottom plate ( 41 ) arranged centrally or eccentrically and having a circular or other geometric shape outlet opening ( 42 ) with one in a cartridge-like container ( 50 ) arranged hardener component (B) with a in the container bottom plate ( 51 ) formed outlet opening ( 52 ), to a pasty mix for producing a ready-to-use filler for the filling of surfaces of vehicle bodies, wherein the hardener component (B) of a hardener paste without or with trapped in this micro-air bubbles with the property after pressure load and pressure relief to achieve a automatic discharge of a small amount of hardener to relax, and the device ( 10 ) a device component ( 20 ), in which the pressurizable sliding floors ( 43 ; 53 ) containers provided in their interiors ( 40 . 50 ) are arranged vertically or horizontally lying and in the vertical or horizontal lying a device plate ( 30 ) with an inlet opening ( 31 ) for the supply of the binder component (A) from the with the device plate ( 30 ) connectable can-shaped containers ( 40 ) and with at least one further inlet opening ( 32 ) for the supply of the hardener component (B) from the on or on the device plate ( 30 ) arranged cartridge-like container ( 50 ), wherein the inlet openings ( 31 . 32 ) via feeder channels ( 35 . 36 ) in the device plate ( 30 ) with in this formed outlet openings ( 33 . 34 ) connected to one of the number of outlet openings ( 33 . 34 ) in the device plate ( 30 ) corresponding number of with the outlet openings ( 33 . 34 ) corresponding inlet openings ( 64 . 65 ) one on the device plate ( 30 ) arranged mixing device ( 60 ), characterized in that the device ( 10 ) is adapted to a) that the supply of the binder component (A) and the hardener component (B) by means of control means to the mixing chamber ( 63 ) of the mixing device ( 60 ) is carried out such that a small amount of hardener component (B) by expansion of the micro-air bubbles as pre-injection compared to the supply of the binder component (A) to the mixing chamber ( 63 ), the device ( 10 ) for effective expansion of the micro-air bubbles, a half-way or three-quarters filled with hardener component (B) cartridge-like container ( 50 ), wherein the outlet opening ( 34 ) in the device plate ( 30 ) for the exit of the hardener component (B) at a distance from the inlet opening ( 65 ) of the mixing chamber ( 63 ) of the mixing device ( 60 ) is preferably 1 mm for a path length of 1 mm for the flow of the hardener component (B) into the mixing chamber ( 63 ), wherein the supply channel ( 36 ) for the hardener component in the device plate ( 30 ) for the hardener component (B) in an adjacent to the outlet opening ( 34 ) in the device plate ( 30 ) section ( 36a ) has a diameter of preferably 1.5 mm or 1.6 mm, and wherein prior to the start of the continuous mixing process by means of the expansion of the micro-air bubbles, an amount of 01, grams to 5.0 grams, preferably 0.2 grams of hardener Component B into the mixing chamber ( 63 ) of the mixing device ( 60 ) and / or b) that the supply channel ( 36 ) for the, compared to the viscosity of the binder component (A) has a lower viscosity hardener component (B) in the region of its end portion ( 36a ) has a diameter of 1.5 mm to 1.6 mm, wherein the mixing device ( 60 ) on the device plate ( 30 ) in the region of the outlet openings ( 33 . 34 ) is arranged for the two components (A) and (B) such that the outlet opening ( 34 ) for the hardener component (B) in the device plate ( 30 ) at the entrance opening ( 65 ) or inlet hole for the hardener component (B) of the mixing chamber ( 63 ) and is congruent with this, wherein the distance of the outlet opening ( 34 ) to the entrance opening ( 65 ) of the mixing chamber ( 63 ) the wall thickness of the mixing chamber wall ( 63a ) of preferably 1 mm, so that the path length for the flow of the hardener component (B) from the outlet opening ( 34 ) in the device plate ( 30 ) into the mixing chamber ( 63 ) of the mixing device ( 60 ) the wall thickness of the chamber wall ( 63a ) of the mixing chamber ( 63 ) corresponds. Apparatus according to claim 1, characterized in that in order to prevent a backflow of the hardener component (B) after cancellation of the pressing pressure on the hardener mass in the supply channel ( 36 ) for the hardener component (B) in the device plate ( 30 ) a check valve ( 80 ), which is set so that at a minimum pressure on the check valve ( 80 ) by refluxing hardener mass the check valve ( 80 ) is closed, so that a reflux is prevented. Device according to one of the preceding claims 1 or 2, characterized in that the device plate ( 30 ) is block-shaped and inlet openings ( 31 . 32 ) and outlet openings ( 33 . 34 ) for the binder component (A) and the hardener component (B) and the inlet openings ( 31 . 32 ) with the outlet openings ( 33 . 34 ) connecting feeder channels ( 35 . 36 ) and a holder for the with the device plate ( 30 ) functionally connectable mixing device ( 60 ) having. Device according to one of the preceding claims 1 to 3, characterized in that the mixing device ( 60 ) one of the number of outlet openings ( 33 . 34 ) in the device plate ( 30 ) corresponding number of with the outlet openings ( 33 . 34 ) corresponding inlet openings ( 64 . 65 ) and from a hollow cylinder-like stator part ( 61 ) with a discharge opening or outlet formed in its wall ( 66 ) for the mix or putty (SM) and one in the stator ( 61 ) concentrically arranged and about a longitudinal axis (LA) rotatable, motor-driven rotor part ( 62 ) with a between the stator ( 61 ) and the rotor part ( 62 ) annular gap formed mixing chamber ( 63 ), wherein several on the inner wall surface of the stator ( 61 ) molded first mixing teeth ( 67 ) radially inwardly and a plurality, on the outer wall surface of the rotor part ( 62 ) formed second mixing teeth ( 68 ) radially outward into the mixing chamber ( 63 ) extend, by means of a rotational movement of the rotor part ( 62 ) in the stator part ( 61 ) the mixing teeth ( 67 . 68 ) to move against each other to create a mixing of the components (A, B), wherein the stator ( 61 ) at least one with the mixing chamber ( 63 ) connected inlet opening ( 65 ) for the hardener component (B) and wherein the first mixing teeth ( 67 ) of the stator part ( 61 ) on a first mixing tooth plane ( 70 ) and the second mixing teeth ( 68 ) of the rotor part ( 62 ) on a second mixing tooth plane ( 71 ), wherein the mixing tooth planes ( 70 . 71 ) axially in the direction of the longitudinal axis (LA) are staggered to one another, so that the second mixing teeth ( 71 ) of the rotor part ( 62 ) in the respective interstices of the first mixing teeth ( 67 ) of the stator part ( 61 ) radially, with several mixing tooth planes ( 70 . 71 ) on the rotor part ( 62 ) and / or on the stator part ( 61 ), wherein preferably the number of mixing tooth planes ( 70 . 71 ) on the rotor part ( 62 ) and on the stator part ( 61 ) is equal to. Use of a device for mixing at least two components, in particular a binder component (A) with a hardener component (B) in a pasty mix for producing a ready-to-use filler for filling surfaces of vehicle bodies with the features of the claims for shortening the path of the hardener component (B) to the binder component (A) in the mixing chamber ( 63 ) of the mixing device ( 60 ) to obtain a uniform time to gelation of the two components (A, B) of 2 to 3 minutes.

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