This rigid frame strander (RFS) has combined
domestic first-class stranding process and adsorbs the advantages of domestic
and international similar machines. It is convenient and efficient to load and
unload. Frame structure helps enhance the rigidity of this rigid frame
stranding machine and ensure its high rotational speed.
Compared with traditional gear box
transmission strander, rigid frame strander is characterized by lower noise
(70dB(A)), higher speed (30m/min), no leakage and maintenance free.
Features
1. Strong
rigidity
The cage and its flange are fabricated by 25mm
and 45mm steel sheets respectively, enjoying steady structure. They are tempered
and sandblasted to eliminate stress, and machined by CNC completely for high
strength. Structure design and machining of the cage makes it suitable for
working at high rotational speed.
2. High
rotational speed of cage
Diameter of stranded single wire
| AL: Φ1.5-Φ5.0mm
|
Cage speed (full/empty bobbin)
| Cage12
190/205
|
| Cage18
170/205
|
| Cage24
150/205
|
| Cage30
120/205
|
Twisted lay length
| 45-1100mm
stepless adjustment
|
3. Built-in position sensing system is
designed to ensure the precision of loading bobbin.
The built-in position sensing system
consists of position sensor and pneumatic unit. When loading/unloading, the
signal of sensor will be transmitted to PLC, which will send command to the pneumatic
position system and lock the cage. Pneumatic brake unit is from a joint venture
in China.
4. This rigid frame strander is equipped
with constant tension control system and intelligent brake system.
By tracking (ultrasonic) the length of wire
wrapped on bobbin, the length of wire remaining on bobbin will be detected and
transmitted to PLC. The PLC will control the air intake by proportional valve
and make the tension of wire constant. Two groups control the tension of brake
disc for paying-off to ensure the pressure on disc equal. Pneumatic brake
system is controlled by intelligent brake system. When emergently stop the machine,
the speed signal of each cage will be transmitted to PLC by sensor. PLC will
make calculation automatically and provide different brake forces to each cage
by proportional valve accordingly. The cages then will synchronously stop.
5. Converter control ensures loading
successfully in one time.
The trolley is controlled by converter, the operation is slow-fast-slow. It means the trolley starts slowly, moves quickly and approaches cage slowly. It ensures stable, reliable and precise running of trolley.
6. This rigid frame stranding machine is equipped with motorized cover.
Fully-covered unit helps to ensure safe operation. The cover will open once loading/unloading or stop of production line.
Electric control system
The synchronous control system for separate
motorized strander is different from similar strander systems by other manufacturers.
It is easy to operate by setting-up all parameters on the touch screen. Unique
program and data collection system ensure machine running stably and reliably.
The precision of lay length is less than 3% when emergency stop and less than
1% when normal stop of production line (PROFIBUS communication control).
Application
Our rigid frame strander is specially
designed to make copper and aluminum conductors as well as ACSR at high speed
and excellent conductor surface for the high-voltage cables produced in
continuous vulcanization.
Technical Data
No. of drums in cage
| 6,12, 18, 24, 30
|
Dia. of single wire
| Copper 1.5-4.5mm
|
Aluminum 1.8-5.0mm
|
Aluminum alloy 1.5-4.5mm
|
Cage rotational speed
| 6 bobbin 200rpm
12 bobbin 180rpm
|
18 bobbin 160rpm
24 bobbin 140rpm
|
30 bobbin 120rpm
|
Lay length
| 6 bobbin 37-500mm
12 bobbin 44-590mm
|
18 bobbin 52-694mm
|
24 bobbin 61-819mm
|
30 bobbin 72-1100mm
|
Line speed
| 6.9~53m/min
|
Sizes of bobbin in cage
| PND 630
|
Centre height
| 1100mm
|
Capstan
| φ2000 (2500) dual pull out capstan
|
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