Full Automation Sets New Standards In Encapsulation


TARTLER GROUP implements an integrated system solution for cutting-edge encapsulation technology

For increased productivity and efficient production of large quantities, more and more electrical engineering companies are taking advantage of the possibilities offered by automated encapsulation. In order to serve these needs, the TARTLER GROUP has developed a complete solution consisting of a resin dosing and mixing system, a robot-assisted encapsulation station and an external refilling unit for a renowned manufacturer of plug connector and motor protection products.

Regardless of the quantities involved, grouting is a traditional encapsulation process used in the production of electrical and electronic components and assemblies. Circuit boards, transformers, controllers or sensors, for example, are coated with a synthetic resin coating or encased in a block of synthetic resin that offers electrothermal insulation and protection against splash water, dust and humidity. Two-component systems of polyurethane, epoxy resin or silicone are usually used for this purpose, which have to be processed according to defined parameters. Dosing and mixing are just as important as application and pouring of the free-flowing compounds. These requirements are fully covered by the portfolio of Tartler Group, a leading medium-sized plant manufacturer based in Germany. When the group recently received an order from a well-known manufacturer of motor contactors and plug connectors to implement a fully automatic electric encapsulation station, a decisive factor for the award was the finely balanced interaction between the parent company – TARTLER GmbH – and its subsidiaries. The result was a modern complete solution consisting of a flexibly controllable dosing and mixing system, a robot-assisted application system and a 2K refill unit that enables continuous encapsulation of already wired assemblies.

Precise dosing and mixing

The dosing and mixing epicenter of this encapsulation station is a controlled PU system of the TARTLER NODOPUR series with automated refilling. It has a volumetric flow meter for the A and B components and a Siemens PLC with color touch screen and allows automatic, variable control of the mixing ratio and output. The system ensures that the potting compound can be precisely metered and has the desired properties when cured. It masters even the processing of resins in delicate mixing ratios and with high viscosity differences. Its range of functions includes permanent pressure and level monitoring, shot quantity control, recipe management, numerous safety features, and the use of rotating static mixers from Tartler‘s injection molding line.

Accurate application of precise quantities

The resin mass produced in the NODOPUR is applied by a 6-axis cobot working in a booth (180 x 170 x 250 cm) with exhaust air extraction. It is connected to the dosing and mixing process by a control unit and guides the mixing head with the outlet nozzle – supported by a camera system – with high precision over a workpiece carrier fed through a pneumatic gate. In doing so, it recognizes which positions are equipped with components standing in mold trays and only allows the defined amount of synthetic resin to flow in there. As specified by the customer, certain areas of the components are left out of the potting compound. Sensors for sensing distances and positions are located in the robot cell. Multiple windows ensure easy accessibility to all major system areas. For reasons of work safety, the cell is designed so that the potting process can only start when the booth is completely closed. On its front side there is space for a roller table for manual potting operations. For this purpose, another mixing head with tension balancer can be latched into the system. This allows small batches of special parts to be cast manually while the system is automatically processing the standardized series parts.

Über die TARTLER GmbH

Dosing, mixing and filling technology for multi-component resins

TARTLER GmbH has its headquarters in Michelstadt in the Hessian Odenwald. The medium-sized family business was founded in 1981 and has been managed by Udo Tartler and Sandra Tartler-Herbst since 2008. It is part of the TARTLER GROUP, which also includes ETP Walther GmbH, ZT Odenwald GmbH, SOMATA GmbH and the foreign subsidiaries TARTLER Shanghai China Ltd., TARTLER India Pvt. Ltd. The total turnover of the TARTLER GROUP in 2020 was around 12.2 million euros; it currently employs 76 people.

In cooperation with material manufacturers and tailored to customer requirements, TARTLER develops and produces modern single- and multi-component metering and mixing systems for polyurethane, epoxy resin and silicone processing.

The company‘s special services include the realization of customized solutions, such as special systems for processing pastes and synthetic resins with unusually large differences in viscosity or extreme mixing ratios. Two technical in-house developments are also worth mentioning: The dynamic static mixer(rotating disposable plastic mixer), which largely eliminates the need for environmentally harmful rinsing agents, and universally usable, very compact mixing head versions without dead spaces. Since 2016, the company has also been implementing innovative vacuum-supported drum changing and filling stations for air-free material handling.

In addition to the installation and commissioning of the machine, TARTLER‘s service includes the instruction and training of the customer‘s employees, and their support during the entire period of use of the machine. In 2013, the company commissioned its new main factory in Michelstadt, which combines all process stages from development to final acceptance at one site.

Here, the mixing plants get linked to handling systems as well. In this way, customers can be offered process-oriented metering technology, mixing technology and filling technology with downstream CNC application systems, robots, winding systems, vacuum chambers or presses.

Firmenkontakt und Herausgeber der Meldung:

Relystr. 48
64720 Michelstadt
Telefon: +49 (6061) 9672-0
Telefax: +49 (6061) 9672-295

Jana Zajicek
Telefon: +49 (6061) 9672-11
E-Mail: j.zajicek@tartler-group.com
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