CZ135093A3 - Exchangeable tank - Google Patents

Abstract

The exchangeable container which can be attached to application units, vehicles, robots and the like serves for receiving, mixing or homogenising and also discontinuously dispensing single or multicomponent fluid coating materials and/or repair materials. It is relevant to the container that it possesses, as main components, an outer container (1.1) for the coating material and/or repair material (1.2) and a mixing insert (1.4) which can be inserted in said outer container (1.1) and removed from it again, the two front sides (1.6, 1.7) of the exchangeable container being designed such that, when the mixing insert is inserted in the container, they can be brought into contact with fixing counter-surfaces. A plurality of partial containers and also active or passive mixing inserts may be present; the latter may also comprise a conveying unit. <IMAGE>

Description

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BACKGROUND OF THE INVENTION The present invention relates to a replaceable container for storage, mixing and / or homogenization and continuous and intermittent extrusion of mono-component or multi-component liquid coating and / or refurbishment materials, as well as the use of such a removable container which can be mounted on application devices, robots and the like.

BACKGROUND OF THE INVENTION

Wire repair and recovery robots and similar devices provided with replaceable material repair cartridges are already known from EP-B1 0 211 825, and only with these devices can truly continuous renovation and restoration work be carried out.

However, EP-B1 0 211 825 does not describe in detail the construction of a container, for example a replaceable container for various, even multi-component renovation materials.

Containers for multi-component liquid substances, in particular for resinous materials and the like, are also known from the patent literature.

For example, CH-A5 659 629 illustrates and describes a two-chamber container for pasty mixtures and materials consisting of a housing and an extrusion device, wherein the housing is divided into two separate chambers by a partition bar extending in the longitudinal direction of the housing. At the upper end of each sub-chamber there is an outlet opening which can be closed by a closing sliding piece adapted to transverse to the longitudinal direction. In addition, a plunger is provided in each sub-chamber for displacement towards the outlet port.

There are no modifications to the cartridge that would allow its use in automatic machines and machines, and no corresponding modifications or descriptions are described or described herein. The mixing end of the cartridge is mentioned in the text of this publication, but it is neither shown in the drawings nor described in more detail in the description.

In US-A 4,811,549 a material container is shown in Figures 4 and 5 which is designed as a two-chamber container for two-component resin materials. From the exemplary embodiment of FIG. 5 contained in the drawings, it can be seen that the separating membrane is removed before applying the resin. Accordingly, this known device does not allow intermittent dispensing of resin.

Due to the structure of this container, the use of a material container in application equipment is not recommended in the description.

US-A-4 771 919 discloses a mixing head that can be screwed onto the front end of the material container. It is apparent from its embodiment that the whole of such a kit cannot be used in applicators and the like, and neither the shape of the front of the mixing head nor the design of the rear of the container is considered in the extrusion direction.

Accordingly, it is not apparent to those skilled in the art to design a cartridge that is a replaceable cartridge suitable for use in application equipment.

SUMMARY OF THE INVENTION

The drawbacks of the prior art cartridges are overcome by the replaceable storage cartridge according to the invention.

mixing and / or homogenizing and continuous and intermittent extrusion of mono-component or multi-component liquid coating and / or refurbishment materials, which can be mounted on application devices, vehicles, robots and the like, characterized in that the main components of the replaceable container are a coating and / or refurbishment material and a mixing insert adapted to be inserted into and removed from the outer container, wherein upon insertion of the mixing insert into the outer container, the two front walls of the replaceable container are formed such that they can be brought into contact with the reinforced and joined surfaces.

In a preferred embodiment of the replaceable cartridge according to the invention, the outer cartridge is cylindrical, has a circular forming curve and comprises at least one coaxial or non-aligned cylindrical sub-cartridge in its interior. Preferably, the central axial sub-magazine is provided with a through guide for the rod, tube, conductor and the like.

The sub-containers holding all materials are in another preferred embodiment of the replaceable container according to the invention provided on their downstream end with a mechanically or hydraulically operated piston or a solid sealing means. In the case of solid sealants, the mixing insert comprises a conveying device, in particular a centrifugal pump, gear pump, rotary piston pump or screw pump, the unit conveying the coating or refurbishment material through the mixing insert.

In particular, the passive mixing insert consists of layers of which the backsheet in the material extrusion direction is a compact layer comprising only through holes, the subsequent layer having a forward-softening sintered or filler structure, the outermost front layer having an outlet opening corresponding substantially to the abutment surface. The active mixing insert consists of a mixing head, a blade mixing device, a screw mixing device and comprises a drive motor coupled to the mixing tools mechanically, hydraulically or electrically by means of a rod, tube or conductor passing through the intermediate sub-reservoir or hardeners in a one component epoxy resin mixture prior to extrusion.

The mixing insert preferably comprises, on the one hand, the structural elements of the passive mixing inserts and, on the other hand, the structural elements of the active mixing inserts.

The replaceable cartridge according to the invention may be used by first inserting a mixing insert into the front of the replaceable cartridge containing at least one material after optionally removing the protective cap over the resin material, and then inserting the replaceable cartridge into a dispensing device adapted to receive the cartridge wherein the rear side of the replaceable container is pressed tightly against the fixed processing surface and compressed air is supplied to the replaceable container, while the front side of the container is sealed onto the treatment surface to which the outlet opening for the material contained in the container is applied.

In an alternative use of the cartridge according to the invention, the mixing insert with the dispensing unit is inserted into the front side of the replaceable cartridge containing at least one working material, after which the dispensing unit is connected to a power source and the replaceable cartridge is sealed to the work surface.

If an active mixing insert is used in the removable container according to the invention, the use of the removable container is adapted in that the removable container is first inserted together with the at least one working material into the receiving device and the rod, tube or at least one conductor is inserted into the central coaxial and then the mixing insert is inserted into the replaceable container provided with a hook and / or fastening and / or fastening element on the rod / tube / conductor, and then the replaceable container is sealed to the mounting surface to be fastened.

When using a replaceable container and sliding sealing elements, the compressed gas for driving the piston is generated either outside the container and supplied through a hose or generated inside the unit by a compressor.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a longitudinal section through an overall configuration of the main components of a replaceable container according to the invention; FIG. 2 shows a longitudinal section through a second embodiment of a replaceable container with a further cylindrical sub-container; cross-section of the passive cartridge of the replaceable cartridge.

All of these exemplary embodiments are oriented so that the shown left ends of the containers are the rear ends in the extrusion direction of the container contents, while the ends on the right side of the figures are the front ends of the containers, considered in the extrusion direction.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a first exemplary embodiment of a replaceable cartridge. provided with a cylindrical outer container 1.1 of metal or reinforced synthetic plastic. In order to reduce the adhesion of the renovation material to the inner surfaces of the cylindrical wall of the cylindrical outer container 1.1. the surface of this wall is provided with a special surface treatment or coating.

The renovation material 1.2 may consist of a one-component material, but in practical industrial applications, two-component materials belonging to the group of structural adhesives are more suitable. Typical representatives of such materials are phenolic resins, polyurethanes, unsaturated polyesters and epoxy resins.

Using these renovation materials, the epoxy resins are cured by amines under normal conditions. The curing reaction takes place with the simultaneous formation of hydroxyl groups which, through hydrogen bridge bonds, ensure good cohesion especially on metal and building materials. Other hardeners, for example aliphatic, cycloaliphatic, aromatic amines, polyaminoamides and mixtures thereof, may be used depending on the desired reaction course and desired properties. Polyaminoamides are long-chain polymers that have the flexibility of cold hardenability and prolongation of both shelf life and cure time.

Standard epoxy resin systems are two-component systems that are either liquid or pasty-like fillers. The reaction properties of the two components of the material are matched to each other, and the rheological properties of the resin and the hardener are similar, so that the two components of the material cannot be misdirected and mixed imperfectly.

The dispensing of certain doses or the continuous dispensing of a certain amount of material, the mixing of the components and the application of the formed mixture can be carried out manually or by means of a suitable device.

Depending on the size of the surface to be repaired and the viscosity of the mixture, the material is applied to the surface to be repaired with a trowel, a notched trowel or a scraper, or the material can be applied to the surface by pouring the surface or by roller. Curing of the material takes approximately 24 hours at 20 ° C and only a few minutes at 120 ° C, depending on the type of system used. The higher the curing temperature, the better the resulting high temperature resistance of the system.

Epoxy resins in the form of one-component systems are used if, after curing, high strength of the cured material is required at a temperature above 100 ° C and if easy processability is required. When these materials are used, the resin and the hardener are present together in the mixture, the hardener being a solid which is insoluble at room temperature. Only after the mixture has been heated by the heat supply does the hardener become liquid and induce a curing reaction. Depending on the type of system used, the storage period is limited to several weeks to one year.

Further information on these systems is given, in particular, in Epoxy Resins, published in Library of Industry No. 51, CIBA-GEIGY.

FIG. 1 shows a longitudinal section of the mixing insert

1.4. Contained in a replaceable container fitted with two front walls 1.6, 1.7.

In the exemplary embodiment of FIG. 2, the replaceable container of the invention is provided with three coaxial cylindrical containers of material, the central container being bounded from the inside and outside by the outer and inner walls 2.1 and the inner container 2.2 comprising a tube 2.4 containing rod / wire and passing through the inner container. 2.2. A plurality of sealing pistons 2.6 are disposed in the individual containers at the rear end in the direction of content displacement. In the exemplary embodiment of FIG. 2, these pistons are formed by two hollow cylindrical bodies; in the example of FIG. 1, the piston is a circular piston which does not have a reference numeral. The various components of the renovation material are covered on the front with a removable protective cover 2.8. which is removed before inserting the mixing insert 1.4.

FIG. 3 is a longitudinal sectional view of an exemplary construction of a passive mixing element embedded in a replaceable cartridge according to the invention. First layer 3.1. which is the first in the extrusion direction, is a compact layer and comprises various spaced openings through which the renovation material is transferred from the replaceable container to the first mixing layer 3.2 of the mixing insert. This first mixing layer 3.2 is formed from a sintered material or a filler material, or has a mixing structure in which the individual particles are interconnected. The third mixing insert layer 3.3 consists of an even finer sintered material or a material with a finer filler structure.

This sintered or mixed fabric structure need not consist of metallic materials, but ceramic or polymeric materials may be advantageously used.

The active mixing inserts to be inserted into the replaceable container according to the invention belong to the following elements which are part of the prior art:

mixing and / or pumping sets which are driven by mechanical power train by means of a tube 2.4 or a rod; the refurbishment material or refurbishment materials are in each case conveyed to the unit by the pressure exerted on the piston;

corresponding mixing and / or pumping kits which are driven hydraulically or, for example, by compressed air supplied by a pipe 2.4. or by means of a connected electric motor which is supplied by an electric conductor inside the tube 2.4;

heated heads, in particular for one-component epoxy resin compositions, comprising a hardener in the deactivated state which is activated by heating followed by, for example, dissolution of the hardener causing a curing reaction in the material.

Claims (12)

PATENT CLAIMS 1. A replaceable container for storing, mixing and / or homogenizing and continuously and intermittently dispensing single or multi-component liquid coating and / or refurbishment materials, which can be mounted on application devices, vehicles, robots and the like, characterized in that: its main components being an outer container (1.1) for the coating and / or refurbishment material (1.2) and a mixing insert (1.4) adapted to be inserted into and removed from the outer container (1.1), wherein after inserting the mixing insert (1.4) into the outer container (1.1), the two end walls (1.6, 1.7) of the replaceable container are designed so that they can be brought into contact with the reinforced or joined surfaces. The replaceable container according to claim 1, characterized in that the outer container (1.1) is cylindrical with a circular forming curve and comprises at least one coaxial or non-aligned cylindrical partial container (2.1) in its interior. The replaceable container according to claim 1 or 2, characterized in that the central axial partial container (2.2) is provided with a through guide for the rod, tube (2.4), conductor and the like. Replaceable container according to at least one of Claims 1 to 3, characterized in that the partial containers holding all the materials are provided with mechanically or hydraulically actuated pistons or fixed sealing means (2.6) on their rear end in the direction of the material displacement. Replaceable container according to claims 1 to 4, characterized in that, in the case of fixed sealing means (2.6), the mixing insert comprises a conveying device, in particular a centrifugal pump, gear pump, rotary piston pump or screw pump, which unit transports a coating or refurbishment material mixing liner. Replaceable container according to claims 1 and 4, characterized in that the passive mixing insert consists of layers of which the backing layer in the material extrusion direction is a compact layer (3.1) comprising only through holes, the subsequent layer (3.2) having a forward-sintering softening sintered or a filler structure, the outermost front layer (3.3) having an outlet aperture substantially corresponding to the abutment surface to be treated. Replaceable container according to claims 1 to 4, characterized in that the active mixing insert consists of a mixing head, a blade mixing device or a screw mixing device and comprises a drive motor coupled to the mixing tools mechanically, hydraulically or electrically by means of a rod, tube or conductor. or a thermal head adapted to dissolve the solid hardener in the one component epoxy resin composition prior to extrusion. Replaceable cartridge according to claims 6 and 7, characterized in that the mixing insert comprises, on the one hand, the structural elements of the passive mixing inserts and, on the other hand, the structural elements of the active mixing inserts. Use of a replaceable container according to claims 2 and 6, characterized in that, after removing the protective cover (2.8) above the resin material, if necessary, the mixing insert is inserted into the front part of the replaceable container containing at least one material, and then an applicator device adapted to receive the cartridge, wherein the rear face of the replaceable cartridge is pressed tightly against a fixed seating surface and compressed air is supplied to the replaceable cartridge, while the face of the cartridge is sealed to the work surface to which the outlet opening is applied material contained in the container. Use of a replaceable container according to claims 1 and 5, characterized in that the mixing insert with the dispensing unit is inserted into the front side of the replaceable container containing at least one working material, after which the dispensing unit is connected to a power source and the replaceable container is applied to the surface to be treated. sealed. Use of a replaceable container according to claims 3, 7 and 8, characterized in that the replaceable container with at least one working material is first inserted into the receiving device and the rod, tube or at least one conductor is inserted into the central coaxial sub-container, a removable cartridge provided with a hook and / or fastening and / or fastening element on the x-loop / x-tube / guide, respectively, is inserted by the mixing insert and then the removable cartridge is sealed to the mounting surface to be fastened. Use of a replaceable container according to claims 9 and 11, characterized in that the compressed gas for driving the piston is generated either outside the container and supplied via a hose or generated inside the unit by a compressor.