Copper Tube Straightener & Chipless Cutter

I Main features:

- Servo feeding, accurate cutting length tolerance

- One time cutting four pieces, high efficient

- Pull-apart method eliminates ID reduction of tube end

- Clean, chipless and burrless cutting, no need further end processing

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

II Main technical data

No.	Item	Data
1	Applicable copper tube	Coil, TP1/2 (M/M2)
2	Copper tube diameter range	Ф6.0~Ф20mm
3	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 stations	2x2 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 tubes	≤0.5mm
14	Tube end ID reduction ratio	f < 20%***
15	Roundness of cut tubes	Non-roundness ≤3% (diameter ≤Ф12.7mm) Non-roundness≤0.4mm(diameter>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

* 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, two different options.

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

*** 3- Tube end ID reduction ratio means:

f= (d₁-d₀)/d₀%

III Main buildup

3.1 Pay-off device: active decoiling, with clutch**

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

**Note: When copper diameter is not more than 9.52mm, simple passive pay-off device can be used.

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