Sheet material wrapping system

Auto horizontal stretch wrapper

Horizontal wrapper wraps tube or plate that won’t fit on a turntable, require banding, compression or extra packing for shipment. It has a proven record of success in many industries such as profiled product, tubular product and plank stuff etc. 
We offer a wide variety of options to meet your specific requirements. Each application is evaluated to provide the right solution to your needs.

Specification

Rotating ring inner diameter: 450-2000mm (to be customized)
Wrapping dimension: Width & Height: to be designed; Length: 1800-5000mm; Weight: 300-1000kgs
Rotating ring speed: Max. 33rpm
Compressed air pressure: 0.5Mpa
Air consumption: 10L/M
Rotary ring

Film carriage

Pre-stretch film carriage
Width: 500mm; 
Core size: 3’’; 
Film roll diameter: max 240mm
Thickness: 17-35μm
Auto cutting & feeding film device   (Pneumatic control)

Hold the film head for feeding;
Automatically cut the film after wrapping and hold film for the next pallet 
Pneumatic components: AirTAC brand
Air consumption: 1000ml
Air pressure: 0.4-0.6Mpa
Top presser (Option)
Control system 
Ring rotating speed controlled by the inverter
In-feed & out-feed conveyor speed controlled by the inverter
Start and finish cycles are controlled by photocells
Auto film cutting.

Auto rotary arm wrapper

Machine main frame                                                               
Gantry type frame, made of square steel tube, material: Q235 steel
Driving motor base is installed on the frame
The rotary arm are fixed on the frame connecting with slew bearing
Frame size: (to be confirmed by drawing)
Driving device for rotary arm                               
Frequency control motor with brake 
Brand of motor: SEW   
Power rated: 1.5KW   
Rotary arm speed: n=15rpm (frequency motor with brake)
Two position limits equipped on two ends of rotary arm 

Film carriage                                                              

Open-door type pre-stretch film carriage, stretch ratio 250% (1m to 3.5m), with spare sprocket ratio 200% for customer to replace for different stretching.
Film carriage lifting driving: chain driving, good stability and high reliability 
Driving reducer: worm gear reducer 
Motor power: 0.37kw, SEW brand

LLDPE pre-stretch film

Stretch wrapping film: Core size: 3''
Film width: 500mm
Diameter: max 260mm
Thickness: 12-35μm           
One roll of stretch film to be supplied along with machine for trial running
Film carriage delivery device
The photoelectric switch is installed on the film carriage, automatic detect the height of the pallet 
Driving motor: AC motor, speed adjustable
Power rated of film delivery driving motor: 0.37KW, SEW brand
Film delivery following up mechanism 
The film delivery following up the rotary arm rotating, the proximity switch control the start/stop of film delivery motor to follow up the rotary arm

Film auto feeding and cutting device
When stretch wrapping finish, the film will be cut and clamped automatically. 
When the film tail is released from the clamp, the air shooter will blow the film tail up, then the film tail will be wrapped by stretch film and keep it tightly with the pallet to ensure no film tail produced. 
Film hot melt cutting adopts electrical heating wire to cut the film. 
After film being cut, the hot sealer will seal the film tail automatically to ensure no film tail come out. Pneumatic component: FESTO brand

Pneumatic control system

Air source required: the compressed air shall be supplied by end user to the inlet of the stop valve.
The pneumatic cylinder is controlled by control box.

Control system

Photo-eye goods height sensor. 
0-9 separate top, bottom & up-down wrap count selectors.
Photo-eye sensing delay.
Reinforce wrap allow more wrap on same location.
Film Tension Control adjustment on the panel.
3-15RPM arm variable a speed by frequency changer
Separate variable carriage up/down speed 
Cycle pause capability.
Separate start, reset and emergency stop buttons.
Manual carriage up/down switch.
Turntable jog button.
Flash light for machine in operation.
Rotary arm stop by safety bumper and reflection photo eye sensing and obstacle in the rotating area.
Maintenance platform and ladder (option)

Main control System

PLC electric control system, touch screen panel.
Inverter control motor speed.