CASES: THE CHOICE OF OUR CUSTOMERS

We decided to use the KSW-AW injector with mechanical actuated ejector when we encountered extraction difficulties at the corners of a molded part near recesses that hindered its exit from the mold. The attached photos clearly show the position of the traditional ejectors, which alone were not sufficient to ensure that the part could be extracted without damage. The integration of ejector-injectors in the corners (position marked in colour) therefore proved to be an effective solution as they can also be used in situations where there is not enough space for traditional ejectors. We are very satisfi ed with the quality and performance of PK products and are happy to share this positive experience”
Daniel Caraghiozov, Responsabile della produzione, Valsir S.p.A.

We use PK injectors with integrated ejectors (Type AWIII) for foaming EPP half-shells for the production of sun visors for the automotive industry. Our machine park using these injectors consists of 12 moulding machines equipped with steam chambers with 6-cavities. Two injectors are used per cavity. Our moulded parts have average dimensions of 450 mm x 200 mm x 12 mm and weigh between 30 g and 60 g. To demould our parts at the end of the process, the piston rod extends 50 mm, detaches our parts and pushes them out so that they fall by gravity onto a conveyor belt before being collected for the next production stage.

“As part of our production processes, we successfully use Kröner KSW-AW ejector fillers in the dimensions 10x25 and 10x50 (d2xL2). These fillers are used particularly for components with complex contours or in situations where the available space does not allow the filler and ejector to be placed at the required distance. In the past, we were regularly confronted with the challenge of insufficient space for fillers and ejectors, both in tool preparation and in the set-up process. In production, this meant that the components had to be demoulded using air alone. This was not a reliable process. In addition, the limited space considerably increased the installation times for the tools. By using Kröner injectors with ejector function, we were able to efficiently solve these problems. The special design enabled us to make best possible use of the available space while significantly reducing preparation and installation times. The fillers have proven themselves both for smaller accessory components and for large inserts and component carriers, and contribute signifi cantly to increasing our production efficiency.”

Timo Schuler, Produktionsleiter & Coordinator Storopack Continuous Improvement Process Storopack Deutschland GmbH + Co. KG