FIELD: manufacture of hollow thermoplastic articles by the method of extrusion-blow moulding. SUBSTANCE: hinge-joint pin 8 of turning levers 6 and 7 is furnished with a drive of reciprocating motion along locking line BB of half- moulds 4 and 5. The drive is made in the form of power cylinder 9 installed in the mould locking line, cylinder rod 10 is linked with pin 8. The turning drive of levers 6 and 7 is made in the form of guides 18 and power cylinders 11. Guides 18 are secured on the half-moulds in parallel with the locking line. Rods 12 are perpendicular to the locking line and have cams with rolling-contact bearings on the ends. The rolling-contact bearings are installed in the grooves of guides 18. EFFECT: smooth and precise locking and parting of half-moulds. 2 cl, 3 dwg
