The SILVER GO CAD and SILVER FAST CAD is a fully automatic rotating arm wrapping machine for stretch wrapping palletised loads that is equipped with an automatic device to protect the four corners of the load.
The automatic CAD device applies protective corners to all four corners of the load using a suction cup system installed on four independent mechanical arms.
The automatic CAD corner protection device consists of:
- 8 cardboard corner holders, two for each corner of the load. A maximum of two different sizes of cardboard corners can be used. Each holder has a maximum capacity of approx. 40 protective corners (2.5 mm thick).
- 4 pick and place units which take the corner from the holder and place it on the load. Each pick and place unit moves along linear rails, controlled by a motor with an inverter and adjusted by an encoder. The cardboard corner is picked up by a suction cup.
- Motorised pre-stretch carriage (model MS-Pro) controlled by an inverter, with pre-stretch with fixed interchangeable ratios. The speed with which the film unwinds is controlled by a sensor which constantly adjusts the motor speed to ensure the pressure exerted on the film is the same over the whole perimeter of the load. The force exerted by the film on the product is electronically controlled and adjusted from the electrical control panel.
- Cutting and welding unit which cuts and welds the stretch film after wrapping. This prevents loose film tails which could cause load stability problems during transportation. This clamping system can be used with any kind of load; the welding unit never comes into contact with the product as it operates against a contrast bar that is then folded away.