Automatic Cropping Machines
MTP's automated nut applicator and nibbing machines can process up to 480 tons of roof bolts per month. (Based on 20mm bar, 1800mm long, a single shift of 8 hours. 22 work days per month and 75% operator and loader efficiency). Automated nut applicator and nibbing machines consist of a sorting and loading table which insures the correct positioning of the bars, a vibrating nut sorter to supply the nut applicator, which in turn spins the nuts onto the thread, a nibbing press with a backstop to accurately position and nib the threads and a spinning head to spin the nut back onto the nib. Oil filtering system with magnetic separator for removing bar scale. Safety guards.
Specifications | |
Maximum length of bars | 3m |
Range diameter of bars. | Ø 16mm to Ø 20mm |
Minimum nut | Hex for 18mm to 22mm Din405 on ø16 to ø20 mm bar |
Quantity of nuts in sorter | 1200 off |
Typical production output | |
Based on Ø20mm bars x 2m long at 5kg each, produced on a single 8-hour shift basis for 22 workdays per month at a 70% efficiency with one operator and one loader/unloader (of bars & nuts) | |
Typical cycle time | 5 sec / bolt |
Production rate / day | 4,000 bolts per 8-hour shift at 70% efficiency |
Production rate / month | 440 tons per month (for 22 single-shift days at 70% eff) |