Two-component cartridge with removable cartridge head and additional protective tube

Abstract

A two-component cartridge with a removable cartridge head that attaches to the cartridge. It is securely attached to the cartridge with two connecting screws, allowing the head to be quickly and easily replaced or cleaned. This promotes the cartridge's longevity.

Description

The present invention relates to a two-component cartridge used for applying two-component adhesives or sealants. The innovative character of the invention lies in three central features: a removable cartridge head, an additional protective tube for the static mixer, and the possibility of manufacturing cartridges with customized mixing ratios according to the specific requirements of the customer.The cartridge head is designed such that it can be placed on the cartridge without additional seals. It is securely fastened to the cartridge by two connecting screws, whereby simple dismantling is made possible. This construction greatly facilitates the cleaning or replacement of the cartridge head. This feature contributes substantially to sustainability of the cartridge because it can be used multiple times and resources are saved.In addition, the cartridge is equipped with a protective tube that performs several functions: it protects the static mixer from damage during use and thereby increases the safety during the application process. In addition, the protective tube ensures that the static mixer is firmly connected to the cartridge. For this purpose, the protective tube is inserted over the static mixer and is securely screwed onto the cartridge head via a thread.A further advantage of the invention is the possibility of producing cartridges with specific mixing ratios. In contrast to existing systems, which are usually limited to standardized mixing ratios, this cartridge offers a flexible adaptation. Customers can request individual mixing ratios and the cartridge is manufactured with the corresponding mixing ratio. This ensures precise adaptation to specific requirements and extends the possible uses of the cartridge considerably.The cartridge consists of several components: it comprises the cartridge itself, which consists of two cylindrical chambers, which contain the respective components and preset the mixing ratio by volume. Added to this are two cartridge plungers which are inserted into the respective chambers, and the removable cartridge head having two separate outlets. These outlets ensure that the two components remain separated from one another until they enter the static mixer. Finally, the protective tube belongs to this, which protects the static mixer and connects it firmly to the cartridge head.The two separate components are first brought together in the static mixer, which is fitted after the cartridge head has been placed on. The static mixer ensures that the two components are mixed together homogeneously, whereby a uniform and reliable mixing is achieved.For two-component adhesives or sealants for which a suitable cartridge is not available, the components are mixed conventionally via the mixing ratio by weight. Here, component A and component B are preweighed and mixed manually with an auxiliary tool such as a stirring bar. This process involves an increased risk for errors and negatively influences the process safety. The present cartridge reliably prevents these failures.The combination of removable cartridge head, protective tube and customized mixing ratios makes this two-component cartridge an innovative solution that is both process safe and resource saving.The first claim relates to the removable cartridge head for the two-component cartridge, which is securely fixed on the cartridge by two connecting screws. This embodiment enables simple dismantling for cleaning or replacing the cartridge head.If necessary, an additional seal can be used to ensure the sealing between cartridge and cartridge head.An essential feature is that the cartridge head can be manufactured in different variants. This allows different properties of the media to be processed to be specifically incorporated. Depending on the requirement, cartridge heads can be used which have, for example, different through-holes for the respective components.These through holes are adjusted to the viscosity of the material. In the case of low-viscosity materials, it is advisable to use smaller openings in order to avoid excessively high pressure build-up in the static mixer. For high viscosity materials, on the other hand, larger through openings are required so that the material can be conducted into the static mixer reliably and without blockage.The removable cartridge head thus enables not only simple handling and reuse, but also targeted adaptation to different applications, which is both process-safe and resource-saving.The second claim relates to a protective tube which is used as a structural connecting element in the two-component cartridge and completely encloses the static mixer. The protective tube is pushed over the mixer and mechanically connected to the cartridge head via a thread.The protective tube performs two technical functions:Mechanical fixing of the mixer:By screwing the protective tube to the cartridge head, the static mixer is fixed in the axial direction. This prevents unintentional loosening or twisting of the mixer during the application process.Stabilization under the action of pressure:During the application of the two-component material, an increased internal pressure can build up in the interior of the mixer. This can lead to a radial deformation of the mixer. In such cases, there is the risk that the medium distributes itself in an uncontrolled manner between the mixer wall and the element chain. The protective tube serves as an external stabilization of the mixer and limits its expansion under the action of pressure. This assists a defined flow behavior in the mixer, which is intended to improve the homogeneity of the mixing.The third claim relates to the embodiment of the two-component cartridge with a fixedly predetermined, customer-specific mixing ratio and a disintegratable construction for simplified reuse or cleaning.The cartridge consists of two separate chambers which serve to accommodate the respective components. The chambers are formed as cylindrical tubular bodies and are screwed by means of threads into a base plate. This connection is releasable so that the cartridge can be completely disassembled. Individual components-in particular the chambers-can thereby be easily exchanged, cleaned or combined in a specific application.The mixing ratio results from the volume ratio of the two chambers, which is determined during production according to the customer requirement. A change by the user is not provided.The components are conveyed synchronously by two cartridge plungers. The media are transferred in the desired ratio via the cartridge head into the static mixer and homogeneously mixed there.The combination of individually manufactured chamber sizes and modular, disposable construction enables order-related manufacture with simultaneous serviceability and resource conservation.

Claims

Two-component cartridge with a removable cartridge head which is placed on the cartridge. It is securely fastened to the cartridge by two connecting screws, whereby the head can be replaced or cleaned quickly and easily. This promotes sustainability of the cartridge.The two-component cartridge of claim 1, wherein the removable cartridge head comprises an innovative protection mechanism, such as an additional protection tube, protecting the static mixer and making the application process more secure.Two-component cartridge according to any of the preceding claims, wherein the cartridge is manufactured with a mixing ratio according to the specific requirements of the customer, which enables a customized solution beyond common standard mixing ratios, and wherein the cartridge is designed to be disintegratable such that individual components such as the chambers are detachably attached and replaceable.

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