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Wood stoves on the welding robot

More and more wood stove, pellet stoves, and fireplace manufacturers choose to use welding robots. Especially in Scandinavia and Middle European countries, where these stoves are used a lot for burning wood and brown coal briquettes, Valk Welding delivered multiple installations into this branch. The Czech manufacturer Haas + Sohn Rukov is one of those manufacturers. ‘’We mainly made the decision to invest in welding robots not only to cover the loss in manpower, but also to increase the productivity, and improve the quality and productivity’’, Michael Cintlová marketing specialist at Haas + Sohn explains.

Haas + Sohn

Haas + Sohn invests in welding robot automation

Haas + Sohn has about 500 employees, divided over production establishments in the Czech Republic and Hungary. Annually, the company produces over 17 thousand stoves that are being exported to the European market. Because the manufacturer adjusts its systems to the specific market demands per country and meets the strictest criteria of the European Union, Haas + Sohn managed to get a leading position in this market. ‘’In order to keep maintaining this position, we are aware that in order to increase the quality and productivity, it is needed to keep investing in production automatisation and robotisation,’’ Michael Cintlová says. Based on the specifications, options, and flexibility, the company chose for a Valk Welding system, with Panasonic welding robots.

A step towards robotised welding

‘’Currently, we have nine welding boxes for manual welding, which are still the base of the production. These will eventually be replaced by new, automatic, and ergonomically better solutions.’’ The first installation Valk Welding delivered is a welding robot installation based on an approved E-frame concept with a Panasonic TAWERS TL-2000WG3 welding robot and two workstations. Both workstations are equipped with a drop center positioner for maximum availability for the welding of the stoves.

Programming training at Valk Welding

At this moment, four production models are being made on the welding robot. ‘Housings that are too complex to weld manually. In the future, we will also weld sub-groups with the robot, like ashtrays, smoke channels and simple parts,’’ Michael Cintl explains. The first stove model is programmed in close collaboration with Valk Welding CZ . The other models were programmed by technicians and welders from Haas + Sohn, who were trained by Valk Welding CZ. ‘’The collaboration with Valk Welding has worked very well from the beginning, and we are very satisfied. We are looking forward to the installation of the next welding robots’’, Michael Cintlová says.

Automatisation is essential

Increasing the production capacity, expansion of the programme, and higher efficiency are important reasons for Haas + Sohn to invest in automatisation. However, a general lack of professional welders plays an important role in welding production. ‘’A situation in which we see no progress in the future. We partially cover this by automatisation and robotisation. Besides that, we intensively collaborate with technical schools, and we offer students professional coaching with an eye on their future employment at Haas + Sohn,’’ Michael Cintlová says.

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