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07-20-2015

Insert Molding with EPDM

Automated Elastomer Processing

At the Deutsche Kautschuk-Tagung DKT 2015 in Nuremberg, Germany from June 29th to July 2nd, Arburg GmbH + Co KG, Lossburg, Germany, presented a compact manufacturing cell for removal suction cups with a threaded brass insert. The system is centered around a vertical injection molding machine (type: Allrounder 275 V) fitted with an elastomer processing package.

At the Deutsche Kautschuk-Tagung, removal suction cups with threaded brass insert were produced in a compact manufacturing cell (figure: Arburg)

As soon as the metal insert is placed in the single-cavity mold (manufacturer: Edegs Formenbau GmbH), the mold is evacuated by means of a vacuum system integrated in the Selogica machine control unit. The insert is then overmolded with EPDM in cycle time of about 60 s. Injection takes place via a pneumatic cold runner system with needle valve. Two P 160 S tempering units (manufacturer: Regloplas AG), which are also fully integrated in the machine controller, regulate the temperatures of cold runner and cylinder module. A six-axis robot (type: Agilus from Kuka Roboter GmbH) removes the finished molding, puts it in a camera inspection unit, and places the OK part on a conveyor. The robot then places a new insert in the mold, which starts the next cycle.

To prevent premature vulcanization, a precisely defined temperature profile must be maintained. This is achieved by means of liquid-cooled tempering jackets on the injection molder’s elastomer cylinder module. The injection unit contains an automatic band feeder and a special conveyor screw for processing the strip material. The mold is heated via adaptive temperature control units, which are programmed and controlled directly via the machine’s Selogica control system. In addition, the vulcanization times and dosing delays can be entered, and venting as well as brushing or demolding devices can be controlled.

Translated from Kunststoffe 6/2015, p. 43.

Company profile

ARBURG GmbH + Co KG

Arthur-Hehl-Straße
DE 72290 Loßburg
Tel.: 07446 33-0
Fax: 07446 33-3365

Internet:www.arburg.com
E-mail: contact <AT> arburg.com



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