PLANT FOR MAKING SMALL AND MEAN DIAMETER TUBES BY ELECTRIC WELDING Russian patent published in 1995 - IPC

FIELD: metal pressure forming. SUBSTANCE: tube electric welding plant includes a line for preparing a strip, having a cross-like coil accumulator 1, the receiving apparatus 2 with the mechanism 3 for transferring the coils, uncoiler 4, guillotine shear 5, the butt welding machine 6 with bridle rollers and the helical accumulator 7. The apparatus 8 for looping is arranged after the line for preparing the strip. The apparatus 8 has a photorelay for monitoring a value of the loop. The shaping mill 9, the welding stand 10 with the cooling device 11 and the sizing mill 12 are arranged after the apparatus 8. The plant is also provided by a control unit for checking and measuring tubes, including two guiding stands 13, the flaw detector 14 and the apparatus 15 for touch-free measuring of tube diameter. The cutting apparatus 16 and the speeding up stand 17 are arranged after the unit for checking and measuring. The stand 17 provides a removal with a high speed of a ready cut out tube from a continuous tube blank in the production line in order to ensure a time resource for tube packing. The station 18 for receiving the ready tubes, placed after the stand 17, includes a roller table, a knocking out apparatus with double-side pneumatic drive unit 20. The roller table is in the form of a shaft with sprockets, mounted along it and having special teeth. Pockets are provided in the station for receiving tubes at both sides of the roller table 18. EFFECT: enhanced efficiency. 1 cl, 2 dwg