China Automatic Cold Heading Machine Drywall Screw Making Machine, Find details about China Screw Making Machine, Cold Heading Machine from Automatic Cold Heading Machine Drywall Screw Making Machine
To produce bolt, two machines are necessary--Cold-heading Machine and Thread Rolling Machine:
1. Cold-heading Machine
To cut raw material wire according to length of finished bolt and form bolt head.
Main Technical Parameter:
Model No | Dia. of Nail(mm) | Length of Nail(mm) |
Z12-3 | 1.2-3 | 2-16 |
Z12-4 | 2-4 | 6-48 |
Z12-5 | 2-5 | 6-60 |
Z12-8 | 4-8 | 10-100 |
Z12-10 | 6-10 | 20-120 |
Z12-16 | 10-16 | 25-150 |
2. Thread Rolling Machine
To roll thread on blank shank of bolt after being cold-headed.
Main Technical Parameter:
Model | Dia. of Threading(mm) | Length of Threading(mm) | Length of Screw(mm) |
Z25-4 | 2-4 | 6-25 | 6-25 |
Z25-5 | 2-5 | 6-50 | 6-50 |
Z25-6 | 2-6 | 6-60 | 6-80 |
Z25-6L | 2-6 | 6-60 | 6-100 |
Besides the above two machines, another machine is optional---Edge Trimming Machine
3. Edge Trimming Machine
To make Hex. head after being cold headed.