Description Overview Frame structures formed by high quality welding carbonaceous steel, through shaped treatment, both up and down crossbeams are processed refined. Needle beam and working beam are backfired and shaped. Oil tank adopts circulated lubrication, the axletree in the trunk is imported originally. Materials of main axletree adopt 40cr, and made finely after high quality finishing. Materials of guiding beam adopt 38crmoal, the surface adopts nitric finishing, and is milled very carefully. Specifications Needle density: 3000 s/m Needle length: 3300 mm Needle stroke: 75 mm Working frequency: ≤1000 n/min Needle hole is φ1.83 mm. Main motor 18.5 kw controlled by inverter. Lifting motor for needle beam: 1.5 kw Lifting motor for web stripping plate: 1.5 kw Construction and Materials Needle plate adopts aluminum-magnesium alloy plate, with irregular computerized perforating. The bottom plate and stripping plate which surface plated by hard chromium both adopt δ12 mm manganic armour plate. The surface of outputting and inputting roller is plated by hard chromium, driven separately by inverters and adjusted by cylinder. Operation and Controls The lifting and dropping of the needle beam (bottom plate) is controlled by grade 6 worm wheel electromotor, while stripper plate manual. The machine has the function of up(down)-limit to reduce the needle breaking rate due to improper operation.
