This equipment is mainly used for longitudinal shearing of cold-rolled precision copper plates and aluminum plates. It can be trimmed and divided into strips.

Its components mainly include: coil material storage saddle (storing one coil), winding car, unwinding machine (with paper feeder), loop I, longitudinal cutting unit, edge material ball machine, loop II, follow-up tension device, winding machine (with lining paper machine), side support (one for each roll), hydraulic control system, power supply and electrical control system, pneumatic system, supporting tooling and molds, tools, and random spare parts.

The seller guarantees that this equipment is complete, the latest design, qualified materials, brand new, capable of meeting the buyer's stable production and long-term operation requirements, and ensures that the structure, performance, parameters, and other indicators of this equipment can fully meet the buyer's technical requirements.

One overview

This project is to construct a cold-rolled copper/aluminum material production line with a specification of 0.1-1.3 × 650mm and an annual output of 20000 tons for Zhejiang Jinte New Materials Technology Co., Ltd. Used for trimming, slitting, rewinding or rewinding strip into finished products.

1. Purpose

This longitudinal cutting unit is used to perform multiple cuts along the longitudinal direction of a metal coil after unwinding, and to neatly wind the cut strips back into a coil under a certain tension;

2. Characteristics

For thin and soft states with color band characteristics, it has high shear accuracy and no scratches on the material surface;

All rollers inside the machine are made of lightweight rollers with surface coating to reduce scratches caused by non rotating rollers;

Flexible pressure plate tension machine, and the tension machine can change height with the increase of winding radius, keeping the angle and position of the winding line unchanged, meeting the requirements of high-quality thin strip winding;

The cutting width tolerance of the processed material is strict, with small burrs and no scratches on the surface. It is equipped with multiple specifications of winding core shaft diameters and has a high degree of automation.

II Production scale and product plan

2.1. Production scale: Copper aluminum strip (0.1-1.3) mm × (200-650) mm, 20000 tons/year;

2.2. Raw materials: copper and copper alloy strip, aluminum and aluminum alloy;

2.3. Material properties:

σb=190～800N/mm2

σs=70～420N/mm2

δ=2～30%

E=10,500～13,500 Kg/mm2

Soft state, semi hard state, hard state

2.4. Roll size:

Inner diameter specification I: Φ 500mm

Inner diameter specification II: Φ 610mm

Maximum outer diameter of raw material roll: Φ 1600mm

Raw material roll width: 200-650mm

2.5. Roll weight: ≤ 8.0T

III Basic configuration and requirements of production line

Production scale: Copper aluminum strip 0.1-1.3mm, 20000 tons/year

Unit direction: from right to left (viewed from the operating side)

Wearing speed: 10m/min

Unit speed: 10-200m/min;

Speed control accuracy: ± 0.1%;

Tension control accuracy: ≤ 2% (in steady state), ≤ 3% (during acceleration and deceleration);

Meter accuracy: ≤ 0.3%

Winding tension: 0.35-12.1KN;

Parking brake time: ≤ 10s

Emergency braking time: ≤ 3s

Precision of disc scissor holder:

Shoulder bounce: ≤ 0.0045mm;

Axial clearance of blade shaft: ≤ 0.0045mm;

Parallelism of two blade axes: ≤ 0.005mm;

The tension table device has high-precision pressure gauges and pressure holding devices for pressure adjustment;

The tension table device is a follow-up mechanism that can rise and fall with the change of winding radius;

Material preparation station: 1 unit (storing 1 roll of material)

Paper delivery machine: 1 unit

Loading trolley: 1 unit

Uncoiler: 1 unit

Longitudinal cutting machine: 1 unit

Edge rolling machine: 1 unit

Follow up tension table: 1 unit

Winder: 1 unit

Unloading trolley: 1 unit

Side support: 2 units

Lining paper machine: 1 unit

Total length of the unit:~17m

Installed capacity:~182 Kw

Production energy: water, electricity

Unit transmission mode: AC variable frequency speed regulation transmission

4、 Quality requirements for finished products

1. Number of cuts:

When δ=0.1-0.3mm: 30 strips

When δ=0.3-0.6mm: 15 strips

When δ=0.6-1.3mm: 10 strips

2. Inner diameter size:

Inner diameter specification I: Φ 300mm

Inner diameter specification II: Φ 400mm

Inner diameter specification III: Φ 500mm

3. Outer diameter size: ≤Φ 1600mm

4. The narrowest cutting width; 15mm

5. Precision requirements for finished rolls:

Sickle bend: ≤ 1mm/1000mm (when width ≥ 20mm)

Width tolerance: ± 0.015mm when the width is 12-40mm

± 0.02mm when width is 40-100mm

When the width is ≥ 100mm, ± 0.025mm

Roll up tower parallelism: ± 0.85mm

Misalignment: ± 0.75mm

Burr: ≤ 5% of strip thickness (soft state),<2% of strip thickness (hard state)

VI technological process

Material transportation → loading → unwinding (paper delivery) → inlet loop → guided pressing → longitudinal cutting → edge wire ball machine → outlet loop → pre sorting, damping, tension → winding (lining paper) → unloading → discharging

1.9. Characteristics of Unit Process

1.9.1. In response to the quality requirements of precision belts, the longitudinal cutting machine equipment has high precision, with blade axis parallelism and blade axis end face runout below 0.005mm, and no axial clearance;

1.9.2. For soft and precision belts, the tension table device is a follow-up mechanism that can automatically rise and fall with the change of winding radius, always maintaining the same winding angle to ensure the quality of winding and the follow-up change of tension;

1.9.3. The vertical scissor shaft bearing adopts the NSK/P4 high-precision series, and the lubrication is centralized lubrication;

1.9.4. High control accuracy, simple operation, interlocking actions to ensure the safety of operators;

1.9.5. The transition rollers of the unit are made of lightweight rollers or lightweight roller wrap, used to protect the board surface;

1.9.6. Adopting AC frequency conversion control, with low maintenance costs;

1.9.7. Unit winding with constant tension and constant linear speed control;

1.9.8. Roll up can achieve parking with sheets, ensuring the quality of roll up during secondary startup;

1.9.9. Main working parameter storage function of the unit;

1.9.10. Automatic prompt function for unit linkage conditions;

1.9.11. Unit process monitoring screen function;

1.9.12. Data setting and display functions;

1.9.13. A comprehensive unit safety system;

7、 Energy requirements

1. Compressed air:

Pressure (dry): 0.5-0.7MPa

Dew point: -20 ℃ (under normal pressure)

2. Power supply conditions:

Power supply voltage: AC 380V ± 10% 50Hz ± 10% 3PH

AC 220V ± 10% single-phase

Control components and valve body: DC 24V

Usage environment: Suitable for -10 ℃~50 ℃, humidity 20%~80% (non condensing);

Protection level: Electrical control cabinet, control console: IP40;