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Perfect Holding with Modern Vacuum Technology

05-06-2021 07:43 AM CET | Industry, Real Estate & Construction

Press release from: Busch Vacuum Solutions

The MINK MV claw vacuum pump as a mobile unit with a vacuum vessel in use on three holding devices

The MINK MV claw vacuum pump as a mobile unit with a vacuum vessel in use on three holding devices

Ernst Hombach GmbH & Co. KG has now found the perfect solution for holding plastic parts during bonding. The company is using a mobile MINK MV claw vacuum pump from Busch Vacuum Solutions to precisely fix various plastic parts in clamping and holding devices so that they can be joined together by bonding. The highlight of this solution is that the vacuum pump is mounted on a vacuum vessel and is frequency-controlled. It therefore delivers the required output depending on demand, regardless of whether one or three parts need to be fixed on the holding devices. This makes bonding parts extremely flexible, effective and efficient.

With 130 employees, Ernst Hombach manufactures plastic products in Uehlfeld, Franconia, ranging from high-quality individual parts to prefabricated mass-produced components for medical technology, railway vehicles and many other industries.
The company was founded in 1947 by Ernst Hombach. During the early years, they only manufactured lampshades, but in the 1960s Ernst Hombach became involved with vacuum thermoforming and revolutionized this process with the development of closed-chamber twin-sheet forming. This process makes it possible to thermoform two thermoplastic plates simultaneously into an upper and lower mold, allowing hollow bodies to be produced in a single operation. Today, twin-sheet technology is used, among other things, to produce cladding for machines or equipment in medical technology, such as housings for magnetic resonance imaging equipment. Hombach can offer virtually all steps of production to its customers, from the concept to series production – from design, construction and prototyping to thermoforming, further processing, pre-assembly and finishing. Timo Tobolla, Managing Director, thus rightly sees himself as a system supplier for his customers.

Individual thermoformed parts are bonded in a separate production hall. In this process, the individual plastic parts are fixed in a holding device under vacuum and joined to other components by bonding. Due to the required high level of precision of these bondings, it is indispensable that the parts are securely and precisely fixed. In the past, an oil-lubricated vacuum pump was used for this purpose, which was placed on a pallet at the respective work stations and to which a maximum of two holding devices could be connected at any one time. The disadvantage of this solution was that this system was not very flexible. What's more, the vacuum pump always ran at full speed and thus always had an unnecessarily high power consumption. In addition, the vacuum pump was relatively loud, which was annoying when operating directly at the work stations.

After consulting with a vacuum expert from Busch Vacuum Solutions, the expert offered a solution that was precisely tailored to these needs, namely a MINK MV claw vacuum pump. This vacuum pump does not require oil as an operating fluid. It therefore works completely dry and contact-free. This makes it nearly maintenance-free: no oil change, no filter change, no wearing parts.

The MINK MV is standard-equipped with frequency control. This means that the vacuum pump can be programmed to set a specific vacuum level necessary to hold the parts. The vacuum pump adapts its performance to the respective requirements. For example, if the necessary vacuum is applied to a holding device, the pump reduces the rotational speed until it comes to a standstill. If a second holding device is connected, vacuum is also immediately applied there by the buffer in the vacuum vessel. If the pressure in the vacuum vessel rises above the programmed level, the vacuum pump automatically starts to lower and maintain it again via the rotational speed.

The MINK MV claw vacuum pump is installed together with the vacuum vessel to form a compact and mobile unit, which can be easily moved to the respective work stations.
Timo Tobolla sees the main advantage of this solution in the fact that he uses considerably less energy with the MINK MV and that, instead of two holding devices in the past, three can now be simultaneously operated under vacuum. Furthermore, the regular maintenance work previously required and the associated costs are no longer necessary. "In addition," Timo Tobolla continues, "handling the new vacuum supply is much easier and, what's more, the new vacuum pump is quieter than the vacuum pump used previously."

Jasmin Markanic
Coordinator Global Press & Media Relations

+49 (0) 7622 681-3376
Jasmin.markanic@busch.de

Busch Vacuum Solutions
Schauinslandstraße 1
79689 Maulburg, Germany

www.buschvacuum.com

Busch Vacuum Solutions is one of the world’s largest producers of vacuum pumps, vacuum systems, blowers and compressors.
Its extensive product portfolio comprises solutions for vacuum and overpressure applications in all industries, including the chemical, semiconductor, medical technology, plastics, and food sectors. It also covers the design and construction of customized vacuum systems, as well as a global service network.
The Busch group is a family-owned company and is still managed by the Busch family. Busch Vacuum Solutions has 3,500 employees in more than 60 companies in over 40 countries worldwide. Busch is headquartered in Maulburg, in southwest Germany. This is the location of Busch SE headquarters, as well as the German production facility and German sales company. In addition to Maulburg, Busch also has its own production plants in Switzerland, the UK, Czech Republic, Korea and the USA.

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