METHOD AND DEVICE FOR MANUFACTURING REINFORCED ENDLESS TOOTHED BELT

摘要

An annular channel on the circumference of a rotatable moulding wheel is closed with a part-circular covering to form a mould cavity at the commencement of which mouldable material is introduced with an injection nozzle. For the production of reinforced toothed belts with a circumference larger by any desired amount than the moulding wheel circumference, a moulding ring consists of a flexible band, the diameter of which is larger than the moulding wheel diameter. The moulding ring is formed with toothing and a force-transmission element coil is wound on the exterior and has its ends fixed on the moulding ring. The moulding ring is inserted between a moulding wheel and covering into the moulding wheel channel and after the laying of the covering upon the moulding wheel and application of the injection nozzle to the mould cavity, the mouldable material is introduced between the covering and moulding ring until the beginning part of the reinforced moulding material continuous length issuing from the mould cavity on the moulding ring is fused together with the end part of the continuous length on reintroduction into the mould cavity of the beginning part. Then the moulding ring with the endless toothed belt is removed from the moulding wheel and separated from the finished endless reinforced toothed belt.