Wire drawing machines (also known as drawing machines) are widely used in industrial applications including machinery manufacturing, hardware processing, petrochemical, plastics, bamboo and wood products, wire and cable industries. Among these, metal wire drawing machines are pre-processing equipment for standard parts and other metal products. Their purpose is to draw wire or rods to ensure proper diameter, roundness, metallographic structure, surface finish, and straightness — directly affecting final product quality.
Shenzhen KEVAN Drive Technology Co., Ltd., a professional VFD manufacturer and industrial inverter supplier, offers the KV600 series frequency converter as a proven solution for straight wire drawing machine applications. The KV600 inverter delivers precise tension control, stable synchronization, and reliable operation in demanding drawing environments.
Working Principle of a Straight Wire Drawing Machine
A straight wire drawing machine is a small, continuous production device consisting of multiple drawing heads. By drawing the wire in stages, it can cold-draw the wire to the desired specifications in one pass, resulting in high efficiency. However, since the wire diameter changes with each drawing stage, the linear speed of each drawing head must also vary.
The benchmark for drawing speed is that the volume of steel wire passing through the drawing die at each moment remains unchanged. The working speed of each drawing head is based on this principle to ensure synchronous operation. However, due to mechanical transmission errors and gaps, as well as dynamic processes such as starting, accelerating, decelerating, and stopping, the various drawing heads cannot maintain perfect synchronization.
Therefore, a straight wire drawing machine uses tension sensors to dynamically measure the tension of the steel wire between each drawing head. The tension is converted into a standard signal (0-10V) and fed back to the frequency converter. The VFD uses this signal for closed-loop PID process control. The adjustment amount calculated by PID is superimposed on the main speed to keep tension constant at each detection point, ensuring synchronous constant tension operation.
System Configuration with KV600 Frequency Converter
The system uses the KV600 series inverter as the core component. The KV600 frequency converter controls wire speed by regulating the frequency of the main wire drawing machine. The synchronous wire speed is output through the host AO1 and input to the drawing frequency converter via AI1. Take-up tension feedback is input through AI2, and tension position setting is configured via software, corresponding to the position where the tension swing arm should remain stable — adjustable according to actual needs.
The system features a multifunctional design including system start, stop, skip, line speed setting, rewinding jog, and wire break protection. This greatly facilitates operator control and equipment monitoring. A PLC can also be used to control each terminal:
- After receiving the start signal, the X5 and COM terminals of the drawing inverter close, and the VFD starts running
- The main speed signal is sent by button, main potentiometer, or the 485 communication port of the PLC
- During low-speed threading, functions include front linkage, forward jog, reverse jog, and rear linkage
Key Features of KV600 Series Frequency Converter for Wire Drawing Machines
The KV600 frequency converter offers several advantages specifically designed for straight wire drawing machine applications:
- Simple installation – Just connect wires correctly according to the manual, and the machine starts working normally
- Automatic dynamic parameter processing – Winding diameter, transmission ratio, wire diameter, empty reel, half reel, full reel, low/medium/high speed, tension, and wire breakage are all automatically processed by the inverter
- No PID board required – Only external operation switches, a small number of intermediate relays, indicator lights, and display instruments are needed
- Simpler system architecture – Lower cost, easier maintenance, better control effect, and more stable equipment operation
- Flexible startup – The machine can start and operate when the tension rod (displacement sensor) is at the lower limit, middle position, or upper limit. It automatically tracks wire drawing speed, and the tension balance rod or displacement sensor is basically maintained at the midpoint position
- Same power matching – The frequency converter and motor are matched with the same power; no need to enlarge inverter capacity
- Suitable for multi-frequency applications – Ideal for tension control in dual-frequency and multi-frequency drawing or winding. No parameter adjustment needed when changing drawing dies or number of machines
Conclusion: KV600 Wire Drawing Machine Solution Results
The KV600 series frequency converter delivers superior performance for wire drawing machine applications, enabling stable and reliable equipment operation while greatly saving production costs and improving productivity. Customers report high satisfaction with the solution.
Three Key Advantages of the KV600 Straight Wire Drawing Machine Solution
- Unique coil diameter calculation function – Effectively prevents wire breakage during drawing, allowing the equipment to operate stably and reliably for long periods
- Excellent torque control and fast response – Avoids the common problem of wire drawing machines being difficult to start under load
- Unique constant tension control algorithm – Completely surpasses existing products’ tension control capabilities. Applied to wire drawing machine winding, it delivers excellent results and high customer satisfaction
Why Choose KEVAN KV600 for Straight Wire Drawing Machines
The KV600 frequency converter offers features specifically tailored for straight wire drawing machine applications:
- Built-in PID closed-loop control for precise tension management
- Automatic coil diameter calculation to prevent wire breakage
- Excellent torque control for heavy load startup
- RS485 communication for integrated system control
- Flexible parameter configuration for multi-stage drawing
- Proven performance in machinery manufacturing, hardware processing, and wire & cable industries
Contact KEVAN Overseas Sales
For more information about the KV600 frequency converter for straight wire drawing machine applications, or to discuss your specific requirements, please contact our overseas sales team:
Overseas Sales Contact: Mr. Li
Phone: +86-13725501611
Email: Service@kevaninverter.com
Company Address:
Room 501, Building 11, Nangang Second Industrial Park
No. 1026, Songbai Road, Sunshine Community, Xili Street
Nanshan District, Shenzhen, China
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