Automated, reject-free joining and dispensing processes at IFM

Details: Released: 30.08.2018; Last updated: 17.07.2024; Hits: 7662

Fichter Maschinen GmbH designed for IFM Ecomatic in Kressbronn a system that can carry out various joining and dosing processes. It consists of two dosing stations and one joining station. The dosing are each equipped with a 2K dispenser and a “Viscotreat-R” storage container from Viscotec Equipped with pump and dosing technology.

IFM Viscotec dosing technology

Since 1969, headquartered in Essen, Germany, IFM Electronic GmbH has been producing sensors for motion control and safety technology, position and process sensors, products for industrial image processing and communication as well as identification systems and systems for mobile work machines.

First dosing station

Dosing system viscotec ifm fichter At the first station of the new system, the material “Delo Duopox AD821” is removed via suction lances from the 20 L hobbock of the material supplier into the Viscotreat-R storage tank. The 2-component material, pressure-controlled from the storage container, fed via a hose line to the mixing and dosing head of the dosing cell - separately for each component. The next step involves mixing and then dosing the material for sealing into the housing frame. Numerous challenges were mastered for this process:

The system should be as long as possible, self-sufficient run without operator intervention. The delivery containers should be handled ergonomically using suction lances. A closed system was required to protect the environment and employees. The thread should be broken off cleanly at the end of each dosing to avoid contamination of the component and the system

Second dosing station

Housing sealing ifm delo In the second dosing station of the system, the Thermal Compound “Henkel-Bergquist Gapfiller 1500LV” is applied. The paste is removed from the material supplier’s 600 ml cartridges using cartridge squeezers. The gap filler is fed via chemical hoses to the mixing and dosing head in the dosing cell, after which the material is dosed onto specified areas on a circuit board.

The aim of the application: to transfer the temperatures generated there to the housing. This allows the Heat balance of the control unit as low as possible. Some hurdles had to be overcome in this part of the system:

It was a sufficient Material supply of the mixing and dosing head when dosing the defined quantity, and in the available dosing time. In addition, the dosing of the highly abrasive thermal paste with a long service life of the dosing equipment had to be ensured by using special materials in the area of the mixing and dosing head.

The process reliability achieved was achieved, among other things, by the know-how about the materials to be processed by the dosing specialist. They selected component materials specially tailored to the medium to be dosed in the product-contacting area. This particularly affected the dispensers and removal pumps.

3D Camera | Industrial image processing

Very gentle on materials The processing of the media was very gentle on the material, thanks in particular to the low-shear mode of operation of the dispensers during removal and dosing. The system now promises absolute process reliability. Production at IFM Ecomatic succeeds without rejects.