dip angle of angle pin in the core-pulling mechanism of a mold
The size of dip angle is not only related with the bending force of angle pin and the actually realized pulling force but also connected with the working length of angle pin, […]
Side core-pulling mechanism drived by spring in mold
When the side concave of plastic parts is shallow and requires relatively smaller pulling force, spring or ebonite can be used to achieve core-pulling.
Power-driven core-pulling in mold
Such mechanism pulls out the active cores by utilizing the mold opening force of injection machine and through the driving of parts. […]
Hydraulic or Pneumatic Core-pulling in mold
Use pressure oil compressed air as power, equipped the molds with special hydraulic or pneumatic tank, […]
Manual pulling in mold
Manual pulling refers to the pulling of side-direction cores with hand or hand tools. Such mechanism is simple in structure yet low in productivity and large in labor intensity.
what is core-pulling mechanism
the flanks of plastic parts are usually provided with holes or flutes, under such cases, side-direction forming cores must be employed to form plastic parts. […]
computation of core working dimension in mold design
computation of core working dimension. Cores are used to mold the internal shape of plastic parts. […]
computation of cavity working dimension in mold design
computation of cavity working dimension. Cavities are mold parts for forming the external shape of plastic parts. […]
shrinkage plays a different role in different plastic parts
therefore, shrinkage plays a more important part in the dimension of plastic parts when molding large parts, whereas when molding small parts, […]
abrasion loss influences working dimension
abrasion loss during use. The abrasion and restoration during production can lessen the dimension of cores and enlarge the dimension of cavities.