Variable-frequency Drive Wire Drawing Machine Application

Variable-frequency Drive Wire Drawing Machine Application

1. Device Overview

The high-speed wire drawing machine is mainly used for drawing copper wire. Its main electrical transmission part consists of a drafting motor, a take-up motor, and a wire arrangement motor. 

Other auxiliary parts of the equipment include a swing bar (tension frame), positioning wheel, line dividing wheel, reciprocating wire arrangement rod, etc. 

The drafting motor drives the drawing wheel to operate. The four-stage drawing wheel is linked through the belt to realize metal stretching, and the take-up motor realizes winding. 

The equipment overview and functional requirements are as follows:

1.1 Basic parameters of equipment:

Product name: High speed thin wire drawing machine

Drafting motor (KW): 11/4P

Take-up motor (KW): 4/4P

Incoming wire diameter (mm): Φ0.6-1.20

Outlet wire diameter (mm): Φ0.08-0.32

Maximum mechanical speed (m/s): 2500(max)

Tension frame resistance value: 5KΩ

1.2 Technical specifications and requirements:

◎ Synchronization requirements when the equipment starts to increase speed;

◎ Keep the tension constant when the equipment is running;

◎ Synchronization is required when parking, without wire breakage or tension relaxation;

◎ Disconnection protection required for equipment safety production;

◎ Inching threading function

◎ External button starts operation;

◎ Running speed display;

◎ The diameter ratio of the winding empty disk to the full disk is about 1:3;

◎ Full plate weight is about 50kg;

◎The maximum operating frequency is about 70HZ.

2. System composition

◎ According to the equipment conditions, select the following models and components as electrical transmission equipment

INV1: Drafting VFD (Variable-frequency Drive) Sunwoele HSF600

INV2: Winding VFD (Variable-frequency Drive) Sunwoele HFV3000

Braking resistor: 1000W/80Ω

◎ The drafting motor adopts Sunwoele HSF600 VFD (Variable-frequency Drive), and the winding motor adopts HFV3000 winding-specific VFD (Variable-frequency Drive) (with external braking resistor)

The operation command and output frequency signal of the host INV1 is used as the operation command and frequency command of the slave INV2 to achieve synchronous operation.

◎ When parking, brake in the opposite direction for a heavy disc to prevent wire breakage caused by inertia.

◎ Use the JOG function to realize the jogging function during threading operations

◎ The pendulum output voltage signal is used as the feedback signal for internal variable PID correction control, and VFD (Variable-frequency Drive) unique winding curve is used for speed prediction graphic operation to achieve constant linear speed winding to meet process requirements.

◎ The pendulum output voltage signal is used as the feedback signal for internal variable PID correction control, and VFD (Variable-frequency Drive) unique winding curve is used for speed prediction graphic operation to achieve constant linear speed winding to meet process requirements.

3. Conclusion

During the entire working process of the high-speed thin wire drawing machine, the process requirements are mainly to maintain constant tension during winding. 

Especially during high-speed operation and rewinding, there are higher requirements for the acceleration and deceleration synchronization control of VFD (Variable-frequency Drive) and the control of the inertia of the rewinding wheel during deceleration and parking. 

After debugging and running, series VFD (Variable-frequency Drive) meets the user's process requirements during acceleration and deceleration operation, high-speed operation, and parking braking.

In order to meet the requirements for safe production, the disconnection protection function of the series VFD (Variable-frequency Drive), in addition to the normal set correction amount holding area, the winding VFD (Variable-frequency Drive) uses the frequency value given by INV1 As a reference value, the PID adjustment effect caused by the action of the tension frame is limited.

Automatic Wire Drawing Machine Use Precautions

Precautions for the Use of Automatic Wire Drawing Machine

The automatic wire drawing machine is suitable for surface drawing and sweeping treatment of copper, iron, stainless steel, etc., and is widely used in various industries such as machinery, automobiles, and hardware parts. 

In order to help you use the automatic wire drawing machine correctly, YF Metal Tech summarizes some precautions for using the automatic wire drawing machine, let’s have a look together.

1. Before operating the automatic wire drawing machine, you need to check the power supply and keep it intact. The specific process of safe start-up of the automatic wire drawing machine is to connect the external power supply first, then turn on the main power switch of the equipment, and finally start the power switch of the equipment.

2. Make sure to check the exhaust port of the body motor before work, and make sure it is unobstructed.

3. Carry out a safety inspection on the automatic wire drawing machine before work, and let the wire drawing machine run idly. In addition, it is also necessary to check whether the fasteners of each part are loose to ensure safe production.

4. During the working process of the automatic wire drawing machine, you should always check whether the impeller and the motor connecting rod are loose, which is conducive to finding problems in time, and can work after adjustment, so as to ensure the safety of personnel in production.

5. When replacing the impeller of the automatic wire drawing machine, the power should be turned off first, and after the power is replaced, check whether the equipment is normal.

6. If it is found that the automatic wire drawing machine is working abnormally, it should stop working immediately and check the equipment. If the problem cannot be solved, find a maintenance worker in time for repair.

7. It is forbidden to extend any part of your body into the polishing area when the automatic wire drawing machine is working automatically to prevent injuries.

8. When the polishing machine is working, if there is an emergency, the main power switch should be turned off immediately.

9. At the working site of the automatic wire drawing machine, it is necessary to keep the ground clean and tidy, and not to place objects randomly.

10. The motor should be maintained regularly, and the bed dust should be cleaned every Saturday, and the motor should be maintained, so as to ensure the normal operation of the wire drawing machine equipment.

11. It is not allowed to randomly connect and pull wires at random. When cleaning or cleaning the equipment, water should be prevented from splashing on the power supply.

12. Non-staff personnel should not enter the work area without authorization to avoid danger.

The above content is organized by YF Metal Tech.

YF Metal Tech focuses on the R&D and manufacturing of wire drawing machines and polishing machines. Currently, it provides automatic wire drawing machines, planar wire drawing machines, plate wire drawing machines, water mill wire drawing machines, round tube wire drawing machines, stainless steel wire drawing machines, and other equipment. Welcome to consult.

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Straight-in Wire Drawing Machine Applicable Standards

The straight-in wire drawing machine is a non-sliding way to draw medium and low carbon steel wire, stainless steel wire, molded steel wire, and non-ferrous metal wire coarse and medium diameter and developed equipment, suitable for standard parts industry, supermarket shelf production industry, steel wire to material processing enterprises.

The straight-in wire drawing machine mainly comprises frame, reducer box, reel, drop wire frame, carriage, pneumatic system, communication frequency control electric control system, and motor.

The reel is placed upside down in the lower part of the reduction box, and the drawn wire can be collected directly to the drop wire frame, and then the end of the large tray collects the wire again.

The drive system of the straight-in wire drawing machine uses a powerful narrow V-belt combination hardened gear reducer or oscillating ring reducer; the wire collecting plate is serious; the reel is forced air cooled; the pneumatic pressure wheel; the lower wire plate is independently driven and the diameter of the lower wire coil is adjustable; the communication frequency conversion speed control makes the machine easy to operate, safe and reliable, and saves more than 30% of energy.

Straight into the wire drawing machine in the motor through the pulley and three-stage gear drive, driving the reel placed on the reducer box rotation output shaft, traction wire end pulling.

After pulling the wire through the lead roller, into the drop wire frame, the drop wire frame and reel synchronous rotation.

The straight-in wire drawing machine is highly automated and can draw and collect wires together.

The wire collecting plate can be as large as 2 tons, easy and reliable to unload, simple operation, high production efficiency, safe, and reliable; it can be positively rotated and decontrolled when the whole machine is running, so as to avoid the formation of accidents by mistake; the appearance is neat and beautiful.

Article Source: Straight-in Wire Drawing Machine Applicable Standards

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