Heat Staking - fixing parts by riveting thermoplastics

Dispensing technology from the specialist bdtronic processes single and multi-component reactive casting resins in its dispensing systems. Depending on the material and application, different dispensing systems are used. Polyurethanes, epoxy resins, silicones, MS polymers, acrylates, methacrylate or heat conductive pastes are used as dispensing media or materials. They are widely used in a variety of industries, e.g. chemical, pharmaceutical, food and environmental engineering, and enable precise and controlled dispensing of materials. It is therefore possible to develop individual machine solutions for your needs. The dispensing systems are based on different processes. Reliable partner for dispensing bdtronic has the right dispensing process for every requirement and is the right partner for every dispensing task. Our many years of experience guarantee the highest level of process reliability for your applications. Basically, the dispensing processes of bdtronic work with volumetric dispensing systems according to the endless piston principle. The high-precision dispensing pumps are driven by servo-electric motors and material can be carried out continuously without interruption. Depending on the application, material and dispensing process, bdtronic uses screw pumps, internal gear pumps, external gear pumps or peristaltic pumps. The dispensing material is conveyed to the dispensing pumps by the respective material supply systems, which are ideally adapted to the dispensing material and the application. The dispensing pumps perform the respective task with the highest precision and independent of viscosity. Dispensing methods at one glance Bonding : The dispensing process adhesive bonding is used to connect two or more joining partners. Sealing: The sealing dispensing process is used to protect components from external influences by means of a barrier. Application of thermally conductive pastes: The application of thermally conductive pastes is used to dissipate heat in order to protect power electronics from reduced performance or defects caused by overheating. Potting and vacuum potting How to select the right pump? It is relevant to select a dispensing pump that is reliable in all areas. Only the pumps that are matched to the process lead to a faultless result. Viscosity Filling materials type Dispensing media type Dispensing rate Depending on the application area and task, all parameters would have to be coordinated to achieve the perfect result. Static and dynamic mixing The selection of the dispensing system for multi-component reactive casting resins is determined by processing parameters such as viscosity, mixing ratios, pot life and chemical-physical properties. We use different mixing principles. Depending on the properties of the casting resin, different processes are required for this, each of which can be individually adapted. bdtronic offers both static and dynamic mixing processes for dispensing applications to achieve perfect results for every application. Get more info on our website about our dispensing machines or visit our team of experts at our booth #2404. | Cost-efficient and future-oriented joining method Heat staking , also known as hot caulking or hot riveting, is a form-fitting, point-to-point, non-detachable joining process. Plastic riveting is a well-known process that has experienced a major renaissance in recent years. The joining of plastics is a focus topic for product development processes and manufacturing solutions due to the constantly growing consumption of plastic materials. In addition, more and more materials are being developed to meet requirements such as energy and cost efficiency, resource conservation and lightweight construction, but their processing is often challenging. The number of joints of mixed materials is increasing, so joining processes such as adhesive bonding and heat staking are gaining significant interest. This trend calls for innovative, cost-effective and optimal solutions for hybrid joints, i.e. for joining different materials such as plastic with metal or with composites such as FR-4, and for this a reliable partner with many years of experience in processing plastics. Heat staking methods bdtronic offers both HOT STAMP and HOT AIR heat staking methods . Depending on the component and requirement, we select the appropriate process for your product. When selecting the suitable riveting process, component restrictions such as temperature-critical areas, necessary clearance areas around the rivet points, interference contours, or maximum permissible mechanical loads must be taken into account. In addition, the requirements on the riveted joint, axial strength requirements, radial strength or special rivet head shape, also play an important role. And last but not least, the required machine cycle time and production environment can determine the choice of process. A HOT STAMP process applies the lowest thermal and mechanical stress to the component and offers the highest flexibility for special tools or installation situations. The BHS HOT STAMP ® heating stamp process is particularly suitable for temperature- and pressure-sensitive components and riveting environments as well as for confined installation spaces. A HOT AIR riveting process achieves the highest possible axial strength and gap filling (radial strength or positioning and tight fit) and a homogeneous rivet head formation. The BHS HOT AIR® riveting process is a two-stage joining process. This allows the cycle time of the machine to be significantly reduced. Clean and irremovable Thermal riveting processes are suitable for processing all thermoplastics in mating with the same or other materials such as plastics, metals or printed circuit boards. The advantage of these processes is that no contaminating chips or dust are produced, no embrittlement of the thermoplastics and no vibrations occur. In addition, the process is gentle on electronic components and demanding thermoplastics, very high strengths can be reproducibly achieved, and decorative surfaces are not damaged. Get more info on our website about our heat staking machines or visit our team of experts at our booth #2404.