Details

October 2018

Let us help you phase-in your tools

Hjerno tools always come with a total warranty. This means that we do not release a tool before we are sure it will function in our customer's production. Therein lies the warranty that we provide tools, which are ready for production.

This is why our specialists often visit our customers to participate in the commissioning of the tool in the customer's production.

This is how we ensure that the finished part is manufactured in a way that matches the tool and the injection moulding machine – which ultimately helps improve the total economy of the part.

"It also means that we obtain great insight in how the tool is used in practice at the customer's location. We use this knowledge to optimise our tools", says managing director Aage Agergaard.

Essential sample moulds
Prior to the commissioning at the customer’s location, a comprehensive test and quality assurance process takes place at the Hjerno factory.

When a tool is finished, quality tests are thus performed on the basis of a predefined test cycle of usually 33 points. Among other things it includes functional tests of electronics, hydraulics, pneumatics, pressure and flow measurement of cooling circuits as well as a lot of detailed tests of various mechanical functions. The test usually also involves a final functional test of the tool in our sample moulding test centre as well as moulding of samples with subsequent visual and technical inspection of the samples.

These sample moulds are afterwards checked against - and evaluated on the basis of - the flow simulations, which were created during the design process.

"We try to flip the flow simulation process 180 degrees by letting the simulations take their starting point in our specialists’ knowledge from the sample mould department rather than the design department. Thus, we achieve more realistic predictions of the mould, taking the challenges of the mould of the samples in the tool design into account," explains Aage Agergaard.

Commissioning may also take place at the customer's location
Finally it is possible to assist the customer with the commissioning at the customer's production location. This may be particularly beneficial in connection with technically complicated tools such as 2K tools where the processes and the injection moulding machine are often very specific for the tool in question.

Aage Agergaard experiences this as a great success. Occasionally Hjerno’s specialists even return with the tool in the company car because there was just one tiny thing that could be optimised - even though the customer had expressed his immediate satisfaction.

"Our customers have over time gained a great deal of respect for our moulding specialists and now consider them as valuable sparring partners, which I really appreciate. In this way we do also contribute to the fact that the tools can be taken into service in our customers' production even faster than in the past," adds Aage Agergaard.

The photo shows Hjerno’s moulding specialist, Jørgen Poulsen, at a tool commissioning at J. Krebs & Co together with J. Krebs & Co's technical manager, Martin Ranhauge.