vulcanization process of polyester conveyor belt
Preparation of polyester conveyor belt bonded money
1, the adhesive site is required to keep dry, clean, no particulate dust, no sun exposure, and convenient to build the workbench, the working environment is clean.
2, Prepare a variety of tools, including: screwdriver, electric mold, various cutter, wire wheel, wire brush, wrench, wire cutter, stripping pliers, hoist (tractor), marking equipment, tape measure, thermometer, stainless steel bucket, basin, rubber gloves, etc.
3, prepare the materials needed: soak the glue in advance for 24 hours, prepare the gasoline, the ratio of gasoline and rubber is 5:1, and the surface rubber core rubber should also be prepared in place.
Bonding process of polyester conveyor belt
1. Lay the conveyor belt flat on the work table and clean the part that needs to be connected. This is followed by a line, as shown in the figure.
2, according to the size line shown in the above figure, cut off the peel diagonally, and can not hurt the lower canvas.
3, electric wire brush clean the residual glue, do not produce too high temperature scorch, glazing and other phenomena.
4, the two sides of the cut conveyor belt overlap, pay attention to the same fabric layer to leave a 5-15mm gap, check whether the joint is compatible with each other, if not the standard to amend.
5. Clean the cut glass layer of the conveyor belt with gasoline, and begin to apply glue, and then apply glue again after drying. After the second glue dries, the buffer strip is affixed to the gap between the same cloth layer.
6, after the glue solvent volatilizes and dries, the tightness of both sides of the adhesive tape side of the tightness is consistent, the joint step alignment, the center line alignment, from the middle of the adhesive tape to both sides of the adhesive tape to facilitate the air escape from both sides.
7, vulcanization, polyester conveyor belt on both sides of the upper pad iron, width 40-50mm, thickness is 0.5-1mm thinner than the conveyor belt body, the length is 300mm longer than the length of the joint, and then use a splint to fix the joint part of the tape. Before the two joints are fitted, place the lower frame of the vulcanization machine, the water pressure plate pressure device, the lower heating plate and the white cloth in turn, lay the white cloth on the part of the tape joint, and then cover the electric heating plate of the vulcanization machine, the heat insulation plate, the upper frame, and the lower frame to find and align, and tighten evenly. Vulcanization needs to control some process parameters, to do the heating while pressing, when the temperature reaches about 70 degrees, the pressure should reach 10kg/cm; The temperature should reach about 100 degrees, and the pressure should reach 16kg/cm. When the temperature reaches 100 degrees, it is necessary to stop pressing and continue to heat the temperature, when the temperature reaches 145 degrees, the heating will stop and the vulcanization time will be counted, the vulcanization will end after 35 minutes of insulation, and the vulcanization machine can be removed when the natural cooling reaches 75 degrees.
8. After removing the vulcanizing machine, remove the raw edge and overflow glue at the conveyor belt joint, trim the conveyor belt clean and smooth, and the whole vulcanized bonding work is over.