Flat cantilever
Enough space for a cool head
What to do when an ergonomic lifting aid is required but the room height is too low for conventional crane systems? Schmalz has a modular flat jib made of aluminum in its product range that is used by Erkodent, a manufacturer of dental thermoforming units.
Erkodent manufactures high-quality products for dental technology, dentistry and foot orthopaedics. It all began with a dental practice in Pfalzgrafenweiler near Freudenstadt, for which Erich Kopp was licensed by the health insurance fund in 1954. Based on his practical experience, he soon began to develop his own instruments to make treatment easier for him and his patients. Erkodent Erich Kopp GmbH grew out of this. In 1980, the company founder established a second mainstay with foot orthopaedics. Today, this accounts for around ten percent of turnover.
Around 80 employees in Pfalzgrafenweiler develop, manufacture and package pressure and vacuum devices for thermoforming on a production area of around 8,000 square meters. Dental technicians use them to shape individual impression trays, molded parts for temporary restorations and bleaching trays. Corresponding accessories and materials such as foils, silicones and waxes are also part of the range, as are protectors for athletes and protrusion splints for sleep-related breathing disorders. All products share the same high quality standard, which the family-run company maintains with the help of audits and multi-stage quality controls in incoming goods, production and the finished solutions.
After testing, the load follows
"When a vacuum thermoforming unit reaches the end of the assembly line, it is first tested and then securely packed for shipping," explains Andreas Weiß, responsible for process optimization at Erkodent. Together with the operating instructions and padding material, a finished package weighs between 15 and 25 kilograms - and the trend is rising. "The package was then positioned by hand on a pallet so that the serial number is always visible," says Weiß, describing the part of the packaging process that he wanted to improve. "We pack twelve to fifteen thermoforming appliances per day. Stacking them on the pallet by hand without a lifting aid was a real strain on our backs and arms," recalls Helmut Seeger. He has been working at Erkodent for five years and works together with six other colleagues at the various assembly and packaging stations.
No room for crane and co?
In search of an ergonomic solution, Weiß turned to Schmalz. "We already have vacuum lifters from Glatten in use at several workstations, and they have impressed us," he emphasizes. The long-standing contact, the positive experiences and the close proximity - there are only 15 kilometers between the two company headquarters - were decisive factors for the project managers to turn to Schmalz again.
Their idea was to install an overhead crane system with a vacuum lifter. "A common solution, but one that we couldn't implement for space reasons," explains Weiß. Even if the system had still fitted between the existing ventilation and media shafts, there would have been no room for the suspension crane once the air conditioning system was installed. "We discussed the problem with Schmalz at Motek 2018 and discovered that the modular flat jib made of aluminum was the ideal concept for us," recalls Andreas Weiß.
The aluminum flat jib is based on the construction kit for slewing jib cranes. The flat-designed solution reduces the overall height of the jib by up to 96 millimetres compared to the conventional steel construction. Measured against a standard aluminum jib, lifting equipment can even be suspended up to 340 millimeters higher with the same overall height of the crane. "Thanks to the extra-flat boom, the crane fits under the ventilation shafts and media routes and still leaves enough working space for the tube lifter," says Weiß.
But it wasn't just the low height that was convincing: the modular aluminum construction was cheaper for Erkodent and could also be set up more quickly. Instead of being mounted on the ceiling, the column-mounted slewing jib crane with its four-meter-long jib is securely mounted on the floor using a base plate. "This makes us even more flexible because we can theoretically also use the crane at a different assembly site," adds the process manager.
The extra-flat crane solution has been in use since February 2019. Erkodent has attached the JumboFlex 50 vacuum tube lifter with quadruple suction pads to the flat jib to support its employees. They can use it to pick up cartons weighing up to 50 kilograms and lift, lower and release them intuitively using the central one-finger control. Stacking based on serial numbers is also easy thanks to the endlessly rotating handle. "Where our employees used to have to use their full physical strength, today one hand is practically enough," summarizes Weiß aptly. "The reduction in workload is clearly noticeable. My colleagues and I are fitter and simply feel healthier," confirms Helmut Seeger. as












