What are the requirements for selecting the ejector rod for mold making?
Ejection rod launching products out of the action of molding cavity, have a plenty of, powered by oil cylinder piston is driven by compressed air, or fixed on the plate, by the process of action makes ejection rod work.The action of the ejector rod has some influence on the smoothness of the product and the quality of the products.Therefore, it is necessary to put forward the following requirements for the use of ejector rod.
The shape of the structure should ensure that the ejector rod has enough working strength.
The rod is made of high-quality carbon steel, the mating part should be grinded, and the surface roughness Ra should not be greater than 0.63.
In order to improve the wear resistance of the working surface, heat treatment should be carried out and the surface hardness of HRC=50 ~ 55.
The installation is solid and reliable, with H7/f6 with the guide sleeve.It should not be greater than 0.03mm.
The rod should be configured according to the size of the end face of the product, the position arrangement is reasonable, and the top output of each rod should be uniform and uniform.
The working face should be slightly higher than the cavity plane, and the range is 0.05 ~ 0.10mm.
After the rod assembly is fixed, it should be tested by the opening and closing module.Note that adjusting the ejector rod does not interfere with other parts and cause collision.