Do You Know The Color And Selection Of Mold Springs?

Mold springs are used in automobiles, metal die-casting molds, plastic molds and other fields. It is not used alone and is used as auxiliary power for movable components such as the ejector plate and row positions. Mold springs have different colors, which represent the load level of the spring and reflect the compression amount and elastic force of the compression spring. Commonly used mold spring colors are blue, red, green, and brown.

 

 

Spring selection:
1. The spring length is selected. When the mold is open, the pre-shrink amount of the spring is 2~4mm. When the spring is compressed in the closed mold state, it is less than or equal to the maximum compression amount.
2. Use brown springs for punching dies and forming dies.
3. Use red springs for the outer stripping of the composite mold and brown springs for the inner stripping.
4. The movable positioning pin uses Φ8.0 ejector pin, equipped with Φ10.0*Φ1.0 round wire spring and M12.0*1.5 stop screw.
5. The spring specification is preferably Φ30.0. Other specifications should be considered in small space areas.

Distribution of springs:
1. When the springs are distributed and arranged, the distance from the center of the spring via hole to the edge of the template is greater than the outer diameter D, and the distance between the spring via hole and other via holes should be maintained at a physical wall thickness of more than 5mm.
2. The spring arrangement should consider the stress-bearing parts, and finally consider the entire mold to be balanced and stable. The stress-bearing parts refer to the shape of the inner stripper plate of the composite mold and around the punch, the bending edge of the forming die around the punch of the punching die and the place where teeth are formed.
3. Spring should also be evenly distributed around the inner guide pillar so that the mold can move normally.