Valve actuation system housing

For encapsulating the housings for the Valvetronic VVT3 valve actuation system, ARBURG has designed a fully automated injection molding system, which is managed centrally via the SELOGICA control system. Use of the finished product in the engine compartment places the most stringent demands on the production process.

Handling of the controller housing is performed by a vertical MULTILIFT robotic system. It transfers the parts to a pre-heating station and then to a turning station. In order to transfer them to the mold with positional accuracy, they are realigned and centered on a turning station. A hydraulic ALLROUNDER injection molding machine then encapsulates the inserts with a high-tech liquid crystalline polymer (LCP).

Highlights

  • Reliable: 0-ppm failure quota as target
  • Precise: torsionally resistant, temperature-stable component with high resistance to vibration and ambient conditions for four-cylinder engines manufactured by the BMW Group and PSA Peugeot Citroën meets the highest requirements
  • User friendly: central SELOGICA controls the entire production cell, including the machine sequence and six further servo axes

Basic specifications

Valve actuation system housing
Cavities: 1
Part weight: 240 g
Material: LCP (liquid crystalline polymer)
Cycle time: 35 s

Technology

Machine
The centerpiece of the production cell is a hydraulic ALLROUNDER 470 S with a single-cavity mold. In order to process the 30%-reinforced LCP, the machine is equipped with a highly wear-resistant cylinder module. The entire cycle takes around 35 seconds and is coordinated with the downstream final assembly operations.
to the hydraulic machines

Robotic system
The automation around a vertical MULTILIFT V is designed to handle two housing types with different flange positions. All the transfer sequences require maximum precision in order to ensure that the controller housings are sealed and fully functional. After cooling, all the parts are checked and palletized.
to the linear robotic systems

Process

Encapsulating inserts
The system for encapsulating the controller housings was custom-designed for the application by ARBURG in close cooperation with the customer and mold maker. The production cell encapsulates two housing types, which feature different flanges. These are recognized at the turning station via reference points.
to the process

Industry

Automotive
In the case of large unit volumes, the integration of automated upstream and downstream operations pays. Because the Valvetronic VVT3 valve actuation system plays a vital role in four-cylinder engines, quality, reliability and zero-faults quality are of particular importance.
to the sector

Partners

MoldStraberger
GripperBarth
PeripheralsSchuma
ManufacturerSonceboz