What is the selection guide for rubber molding equipment?

A brief introduction to rubber vulcanization equipment and selection guide

The choice of clamping force, i.e. pressure, is critical when purchasing equipment. If the pressure is too low, the density of the extruded product may be poor, which will affect the vulcanization setting. If the pressure is too high, the mold may be damaged. Choosing a reasonable clamping force is a key. This can generally be calculated based on the projection of the product and the number of molds, the size and the thickness of the mold. However, a 20% margin must be left on the calculated clamping force. For example: if we calculate that the product should use 80 tons of clamping force, then we can choose equipment with 100 tons of clamping force. Of course, in some cases, as long as the plate is suitable, we can also take the approach of reducing the system pressure to achieve the purpose of one machine for multiple uses.

The most important thing when purchasing equipment is how to consider the size of the plate. First, let's take a general look at the thickness of the plate:

When the clamping force is less than 40 tons, the plate size is less than 450mm×450mm, and the general thickness is 40mm-50mm;

When the clamping force is less than 50 tons, the plate size is less than 500mm×500mm, and the general thickness is 50mm-60mm;

When the clamping force is less than 100 tons, the plate size is less than 600mm×600mm, and the general thickness is 60mm-70mm;

When the clamping force is less than 300 tons, the plate size is less than 1000mm×1000mm, and the general thickness is about 80mm;

When the clamping force is less than 500 tons, the plate size is less than 1500mm×1500mm, and the general thickness is more than 100mm;

Note: If you order equipment, the thickness of the plate must be indicated in the contract. Why do we need to know the thickness of the plate? Of course, the thicker the plate, the more stable its flatness and the better its temperature uniformity, but your purchasing cost will definitely be relatively high. Imagine that the diameter of the current electric heating rod is generally between 18mm and 20mm. If the thickness of the plate is 50mm, then 50-20=30, 30÷2=15, so there is only 15mm on the upper and lower layers of the electric heating rod, which will easily cause the plate to deform.