DBL System Of PU/Rock wool Panel Production Line

Function:

DBL is mainly used to overcome the expansibility of foaming and make it solid, and decide panel thickness and production speed. Side belt is overcome horizontal expansion and decide width of panel and guiding to the panels. As active running moulds, it avoids panel deformation and scratch and to ensure panels quality.

Components:

It consists of upper and lower steel belts, transmission system, side belts and transmission mechanism.

Main structure

(reference only)                                                            

The DBL consists of two heavy duty independent conveyor structures (lower and upper) supported by columns which are placed on the floor. The lower conveyor is fixed to the columns by means of welded metal structures and with coupling bolts and screws. The surface of DBL is covered a group of polished steel panels of 200mm chain plates, these panels is connected with wearable bears so that to form a chain driven system with high strength. For these panels, we adopt anti-corrodant welding structure and tooled on high accurate lathe so that to ensure that user can change the panels in future. And for workpiece we adopt double surface seaming and double side in time to keep the level sliding surface smooth 、high precise and hard to deform.

Lower belt is installed a corrugated panel moulds that is anti high temperature and

anti corrosion, and also installed magnetic steel and pins on the moulds for easy installation and disassembling.

There’s side belt on each side of DBL, speed is same with the double belts. Level distance can be adjusted to suit different width. It’s driven by motors and adjustment device is high precision and operation easy, high automatization.

Different panel thickness and profiles nylon moulds is different.

A)DBL upper and lower belt structure

The upper and lower DBL is driven by gear box controlled by motor and inverter; the speed can be adjusted in order to keep the same phase. The position of lower

DBL is fixed and the height of upper DBL can be adjusted through adjusting the electrical controlling hydraulic jack so that it is very convenient to adjust the different height to suit for different panel thickness. This adjusting technique already applied for the country patent.

Different panel thickness and different panel profile request different nylon mould. The mould material adopt nylon which is anti-high temperature and anti-corrupt. It is mounted with high absorbability magnetic steel and pin. It is  easy to be equipped and disassembled.

B)Side belt structure

There are two sides DBL at the two sides of upper and lower DBL which can be kept with the same running speed. The distance of two sides DBL can be adjusted through inverter motor to suit for different sandwich panel width. The adjustment is high precision, convenient operation and high automatization.

Workflow：

Adjust the upper DBL height---------Preheat the DBL to be appropriate temperature--------Deliver the preheated sheet------Pour the mixed material on the lower sheet------Enter into the DBL body -------Foaming and solidifying------Pull the panel forward by DBL

Conclusion: 

The Double Band Laminator (DBL) system for PU (Polyurethane) and Rock Wool panel production lines represents a highly efficient, automated solution for manufacturing insulated sandwich panels used in construction, cold storage, and industrial