Injection moulding
Automatic inline de-flashing of injection-moulded work pieces

From Doris Schulz 4 min Reading Time

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A global garden and power-tool brand has brought the production of two critical thermoset engine components in-house at its US plant to stabilise dimensional accuracy and functional quality. Central to the new injection moulding cell is a fully automated, inline de-flashing solution from Rösler.

The blast nozzles, placed at the top and bottom of a vertical linear shuttle unit, can be moved up/down and individually turned on or off. (Source:  Rösler Oberflchentechnik)
The blast nozzles, placed at the top and bottom of a vertical linear shuttle unit, can be moved up/down and individually turned on or off.
(Source: Rösler Oberflchentechnik)

For quality reasons a globally leading manufacturer of garden implements and motorized tools established a plastic injection moulding system for engine parts at its production facility in the United States. The geometrically complex work pieces are de-flashed in a swing chamber blast machine, model RWS 1200-I4-SAT2, supplied by Rösler. This system, completely integrated into the manufacturing flow, allows fully automatic de-flashing of the work pieces and their transfer to the assembly line at the precise output speed of the injection moulding machine.

In forest and garden maintenance as well as landscaping and construction the tools and implements of this company, headquartered in Germany, enjoy a first-class reputation around the world. They are produced at various locations on several continents. To maintain the excellent international quality reputation of the motorized tools, purchased components must meet extremely high standards regarding dimensional accuracy and functionality. Two injection-moulded thermoset engine components, supplied by external suppliers for the US manufacturing facility, did not consistently meet the specified quality standards. For this reason, the company decided to make these components in-house, including the removal of flashes created during the moulding operation. Since in Europe the company cooperates with suppliers, who offer excellent solutions from Rösler for the “de-flashing of plastic components”, the engineers responsible for this project contacted the Rösler US subsidiary in Battle Creek (Michigan).