Core working principle: Through-hole winding
When the equipment is operating, the steel coil is supported by idler rollers and rotates slowly. A "carriage" carrying packaging materials runs along a hinged circular track that passes through the center hole of the steel coil (i.e., "through-hole"), thereby uniformly winding the materials around the outer circle and the ends of the steel coil, forming a tight protective layer.
Main technical advantages
Compared to manual packaging, the improvements brought by the automatic film winding machine are comprehensive:
1. Efficiency improvement: The packaging speed is much faster than manual operation. For some models, it can complete the packaging of 20 to 45 rolls per hour.
2. Better protection: The film wound by the machine has uniform tension and tight adhesion, which can effectively prevent moisture, dust and corrosion. It can also be used in combination with VCI anti-rust paper to achieve a more advanced anti-rust protection.
3. Safe and effortless: It significantly reduces manual lifting and bending operations, thereby lowering labor intensity. The equipment is usually equipped with safety light curtains, which will stop the machine as soon as someone approaches, ensuring safety.
4. Cost savings: By precisely controlling the film tension (such as pre-stretching technology), significant waste of consumables can be reduced.
Common technical parameters (taking a certain model as an example)
The parameters of different models of equipment may vary. Here is a typical parameter set for a medium-sized device for your reference:
Steel coil weight: 200~5000kg
Steel coil outer diameter: 700~1600mm
Steel coil width: 300~850mm
Packaging materials: LLDPE stretch film, VCI rust-proof paper, woven fabric, etc.
Control system: PLC (Programmable Logic Controller) in conjunction with touch screen (HMI)
The brands of main components: Siemens, Mitsubishi, etc.
Key Technical Components
An automatic film winding machine is mainly composed of the following parts:
1. C-shaped track and sports car: The packaging materials are rotated by this track.
2. Rolling machine: It is used to support and drive the steel coil to rotate slowly.
3. PLC control system: The brain of the equipment. Parameters such as the number of packaging loops and overlap rate can be set through the touch screen.
4. Automatic film feeding and film breaking mechanism: Achieve automatic material loading and film cutting, completing the fully automatic cycle.
How to Choose the Configuration?
1. Selecting based on requirements: The main factors to consider are the weight, outer diameter and width of your steel coils, as well as the production requirements.
2. Optional Function Upgrade:
Multi-layer synchronous packaging: It can simultaneously wrap rust-proof paper and film at one time, resulting in higher efficiency.
Automatic loading and unloading: Combined with conveyor belts or trolleys, it enables unmanned operation.