What are the common types of power drive systems for coil tilters?

2025-09-03 11:44:22

The power drive system of the Coil Flipping Machine is the core of realizing the coil flipping action, and its type selection mainly depends on the weight, material, flipping accuracy requirements, and production scenario of the coil. At present, mainstream power drive systems can be divided into three categories: hydraulic drive, electric drive, and pneumatic drive. Some scenarios may also use "composite drive". There are significant differences in the structure, principle, advantages and disadvantages, and applicable scenarios of each system, as follows:

1、 Hydraulic Drive System

Hydraulic drive is the mainstream solution for heavy-duty coil flipping machines, with the core being the transmission of power through hydraulic oil to achieve high torque and smooth flipping.

1. Core components

Power source: hydraulic pump, motor;

Execution component: hydraulic cylinder;

Control components: solenoid valve, relief valve, throttle valve;

Auxiliary components: hydraulic oil tank, filter, pressure gauge.

2. Working principle

The motor drives the hydraulic pump to operate, pressurizing the hydraulic oil in the hydraulic oil tank;

The operator sends a flipping command through the control panel, the solenoid valve switches the direction of the oil circuit, and high-pressure oil enters the rodless chamber of the hydraulic cylinder;

Hydraulic oil pushes the piston rod to extend, and the piston rod is connected to the flipping frame, driving the flipping frame to slowly rotate around the fixed axis;

During the flipping process, the throttle valve controls the hydraulic oil flow to ensure uniform flipping speed;

After reaching the preset angle, the solenoid valve is powered off, the oil circuit is locked, and the flipping frame is fixed in position by hydraulic lock.

Advantages: - High output torque, can easily drive heavy-duty coils weighing over 50 tons;

-The flipping process is smooth and impact free, avoiding surface damage to the coil material;

-Strong overload protection capability and high safety.

Applicable scenarios: - Steel plants, non-ferrous metal processing plants;

-Heavy duty sheet metal processing workshop.

Electric drive system

Electric drive uses an electric motor as the core power source and transmits torque through mechanical transmission, suitable for scenarios requiring lightweight coils or high-precision flipping. According to the type of motor, it can be further divided into two categories: "reduction motor drive" and "servo motor drive".

1. Core components

Power source: servo motor, reducer;

Transmission mechanism: gear transmission, chain transmission, worm gear transmission;

Control components: servo drive, encoder PLC。

2. Working principle

PLC receives flipping instructions and sends signals to servo drivers;

The servo drive drives the servo motor to rotate, and the motor power is transmitted to the transmission mechanism after being reduced by the reducer;

The transmission mechanism drives the flipping frame to rotate around the rotation axis, and the encoder detects the motor angle in real time and feeds back the data to the servo drive;

When the flipping angle reaches the preset value, the servo drive controls the motor to stop and the flipping frame is accurately positioned.

Advantages: - High flipping accuracy, suitable for processes with strict posture requirements;

-Fast response speed, capable of achieving quick start stop;

-No hydraulic oil leakage problem, clean and environmentally friendly, low maintenance cost;

-The flipping speed and angle can be flexibly adjusted through the program to adapt to multiple specifications of rolls.

Applicable scenarios: Packaging industry;

-Electronic materials industry;

-Lightweight metal processing.

Pneumatic Drive System

Pneumatic drive uses compressed air as the power source, with a simple structure and low cost, suitable for ultra light coil materials or simple scenarios with low flipping requirements. It is relatively rare in large-scale industrial applications.

1. Core components

Power source: air compressor, cylinder;

Control components: pneumatic valve, pressure regulating valve, muffler.

2. Working principle

The compressed air generated by the air compressor is adjusted to the appropriate pressure through a pressure regulating valve;

The pneumatic valve receives commands, supplies compressed air to the cylinder, pushes the piston rod to extend/retract, and drives the flipping frame to rotate;

After flipping in place, the pneumatic valve loses power, the cylinder exhausts, and the flipping frame stops.

Advantages: - The simplest structure, lowest cost, and easy installation and maintenance;

-Clean and pollution-free, with no oil leakage issues;

-Fast response speed, quick start stop.

Applicable scenarios: - Small packaging factories;

-Laboratory or sample workshop.

Composite Drive System

In some special scenarios, a composite drive system of "hydraulic+electric" or "hydraulic+pneumatic" will be used, combining the advantages of different drive methods.

Example: Hydraulic electric hybrid drive

Core logic: The hydraulic system is responsible for providing high torque and driving the flipping of heavy-duty coils; The electric servo system is responsible for "fine-tuning positioning". When flipping close to the target angle, it switches to electric drive and precisely controls the last 5 ° flipping through the servo motor to ensure that the angle error is less than 0.1 °.

Applicable scenario: High precision heavy-duty metal processing.

Summary: Core Basis for Selecting Power Drive Systems

When choosing the power drive system for the coil flipping machine, the following three factors should be given priority consideration:

Roll weight:<1 ton="" 1-5="" tons="">5 tons hydraulic;

Accuracy requirements: For high precision, choose servo electric, while for general precision, choose hydraulic or deceleration electric;

Scenario adaptation: Choose electric for clean environments, hydraulic for heavy industrial environments, and pneumatic for simple temporary scenarios.