The upper and lower track shoes are the core of the double track press, and its design, material selection, machining and processing are very important and complicated. The double crawler machine is installed in the continuous production line, which is used for foaming and curing of the core material in the sandwich panel, and curing and shaping of the sandwich panel in the laminated state.
When the track shoe is in working state, it needs to be under pressure for a long time (foaming pressure is 3kg/cm2) and temperature resistance (working temperature is 45ºC-80ºC), especially when producing PIR, and when phenolic, the temperature of the track shoe reaches 70ºC, which When the two conditions are combined together, the metal of the track shoe during long-term work will produce a creep phenomenon, which will deform the track shoe, destroy the geometric accuracy of the track shoe, and affect the surface quality of the composite shoe. In view of the above situation, this track shoe is made of high-quality special materials. The processing technology of the double track machine adopts the combination of multiple heat treatment and stress relief annealing. At the same time, it finally adopts grinding processing and complicated welding process. The special double-stage transmission design makes the track shoe. The width of the track shoe can reach 270mm. Through finite element mechanical analysis and special reinforced structure design, the track shoe has high hardness, good wear resistance and no deformation. The above conditions ensure stiffness, strength and fatigue resistance. and weather resistance to prevent metal creep.
The function of the side belt is mainly to overcome the lateral tension generated by the polyurethane foam, determine the width of the composite board, and play a precise guiding role for the composite board during the production process; the double crawler, as a continuous running movable grinder, needs to avoid the deformation and deformation of the board. The surface is scratched, ensuring a high-quality composite sheet.