LATEST ISSUE

SIGMA Engineering Smart Molding Banner 368x150px

Tags
Shows
28. - 30. September 2021
Interplas
Birmingham, UK
12. - 16. October 2021
Fakuma
Friedrichshafen, Germany
15. - 18. November 2021
Arabplast
Dubai, UAE
Have some relevant information to share? Send a message to info@smart-molding.com — we are always happy to discuss!

CPS22 ICL Smart molding 368x90

AsiamoldAOG22 368x90 eng Smart Molding

Логотип сайта
Simulate compression molding for the first time

Simulate compression molding for the first time

News 08.10.2021

During Fakuma (12-16 October 2021) in Friedrichshafen, Germany, SIGMA Engineering GmbH will present new developments of SIGMASOFT®. The new version 5.3.1 now allows the simulation of Compression Molding processes of rubber compounds.

Picture 1 25 cavities und 9 Preforms

25 cavities and 9 preforms in a compression molding process

Up to now, simulative design of mold and process was mainly focusing on modern injection molding technology. Since SIGMASOFT® is successfully introduced at many leading elastomer-molders, there was always a request to also implement the older processes, which remain technically required and/or cost-critical for manufacturing precision parts and O-rings, partly in small series. The simulation allows reliable prediction of curing degree and cycle-data. Questions around shape, weight, position and number of preforms can also be investigated. The quality of the molded parts can be optimized while reducing the material consumption, without time-consuming and costly trial-work.

“It sounds easy, but implementation was relatively complex”, explains SIGMA CTO Timo Gebauer: “The challenge is, that the cavity, or the room into which we inject, constantly changes during the closing of the mold. At the same time the inserted preforms are already heating up, are plasticizing and deforming. This development would not have passed the finish line without continuous advise and validation through our customers.”

Different to Thermoplastics, in the industry only few standardized elastomer compounds are available. Therefore, SIGMASOFT® features the creation of own material laws, based on internal or external measurements and supports users during implementation.

“It’s interesting, with this approach there is practically no remaining difference between Transfer and Compression Molding processes for the simulation. Technically, the injection sprue in the middle platen becomes part of the cavity. In the validation, we therefore also calculated Transfer Molding Tools successfully”, says Gebauer. “We are curious, how the most advanced simulation approach is accepted by the experienced rubber manufacturers for the oldest processes.”

SIGMASOFT® v5.3.1 not only includes the first possibility to simulate Compression Molding of Elastomers, but offers especially in the area of Thermoplastics numerous innovations and improvements for example a more precise prediction of warpage and shrinkage. The Autonomous Optimization feature included in the software now also works for 2 component parts. Additionally, the material data base was enhanced.

Our website makes use of cookies to ensure we give you the best experience on our website.
By continuing browsing on our website you give your consent to our use of cookies.