This machine is for straightening copper coil tubes, detecting length and chipless cutting automatically.

I Main features:

- Servo feeding, stable and high re-positioning precision

- One time cutting four pieces, high efficient

- With pull-break function, less mouth shrinking rate

- PLC control, high automation—auto feed, auto cut, auto unload, auto alarm.

II Main technical data

No.

Item

Data

1

Suitable copper tube

Coil, TP1/2 (M/M2)

2

Suitable copper tube diameter range

Ф6.0~Ф20mm

3

Suitable copper tube wall thickness

0.3~1.0mm

4

Cutting length range

40~6000mm

5

Pay-off device

4

6

Copper coil reel size

OD: 1000~1250mm,ID: 130mm

Weight: max. 280kg

7

Cutting station

2 x 2 (or 1x4)*

8

Cutting speed

10 cuts per minute (@L=1000mm)*

9

Feeding speed

Max. 0.5m/s

10

One-time feeding stroke

Max. 1200mm

11

Straightness tolerance

≤2‰

12

Cut-to-length tolerance

≤0.3mm /1000mm

13

Length difference between two tubes

≤0.5mm

14

Tube end ID reduction ratio

f *

15

Roundness of cut tubes

Non-roundness ≤3% (diameter ≤Ф12.7mm)

Non-roundness≤0.4mm (dia>Ф12.7mm) 

16

Surface condition after cut

No apparent scratch, drawing marks; no burrs

17

Compressed air

0.5-0.7MPa

18

Total electric consumption

6kW (3kW)

* 1- 2x2 means there are two separate driving system for cutting 2 pairs tubes in different diameter and different length; 1x4 means there is only driving system for cutting 4 tubes in same diameter and length.

* 2- When cutting length is less than 100mm, there will be no pre-stretching function.

III Main buildup:

3.1 Pay-off device: four, active decoiling

3.2 Straightening & rounding device: straightening deformation can be adjusted for different hardness copper tubes. When size changing, rounding wheel and straightening wheel will be changed.

3.3 Feeding device: driven by servo motor; Pulling and clamping dies are driven by enhanced pneumatic cylinders.

3.4 Cutting device: orbital-notching + stretching method, pneumatic driving feeding stroke of orbital blade, stable feeding and quick returning; The feeding stroke can be fine adjusted to assure same mouth shrinking rate; Equipped with lubricant spraying device for lengthening blade life.

3.5 Unloading table: covered with stainless steel, 1500mm long

3.6 All the clamping dies are made by chrome steel, quenched HRC 50

3.7 Control system: PLC + touch screen

IV Main configuration:

- PLC + HMI: Estun from China

- Pneumatic components: SMC from Japan / Pneulead from Italy

- Servo motor: Estun from China

- Limit switch: Autonics from Korea

- Ball screw: TBI from Taiwan

- Buttons & relays: IDEC from Japan / SIEMENS from China

- Main bearings: NSK from Japan