The thermoforming process enables the economical production of plastic packaging in large quantities. A leading manufacturer of the machines installs rack and pinion gears from LEANTECHNIK in its automatic compressed air forming machines and punching machines. The components guarantee process-reliable operation of the systems even if the specified technical data are fully utilized.
Short molding cycles, high output and low investment costs: thermoforming systems have major advantages over other methods of plastic processing. The central elements of the compressed air forming machines are the pre-stretcher and the stenter frame. These devices pre-stretch the heated plastic, fix it and thus define the desired contour of the deep-drawn part. A well-known manufacturer of these machines uses lean SL rack and pinion gearboxes from LEANTECHNIK as the drive for both parts of the system.
lean SL rack and pinion gearboxes were developed for simple synchronous positioning tasks where there is already a guide and no lateral forces need to be absorbed. lean SL rack and pinion gearboxes are available in different sizes and in two variants, can accommodate lifting forces of 800 N to 25,000 N and achieve lifting speeds of up to 0.6 m/s. The gearboxes are not only available in a standard version, but also as a lean SL double with two racks for applications with gripping, closing and centering movements. LEANTECHNIK also has the particularly compact lean SL 5.m for applications with very small installation spaces and the
lean SL 5.5 with very high lifting forces in its range.
A product from LEANTECHNIK is also used in the thermoforming specialist’s punching machines. A gearbox from the lifgo series takes over the pushing out of the molded parts from the punching tool in the so-called pusher drive. lifgo rack and pinion gears are characterized by their high level of robustness and are ideal for the precise, synchronous positioning of heavy loads. LEANTECHNIK manufactures the gearboxes in various series with lifting forces from 2,000 to 25,000 N and lifting speeds of up to 3 m/s. The lifgo rack and pinion gears position with an absolute accuracy of ±0.05 mm and a repeatability of ±0.02 mm.