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.
manufacturing tolerance influences working dimension
manufacturing tolerance. The manufacturing tolerance directly influences the dimension tolerance of plastic parts, […]
shrinkage of plastic parts influences working dimension
the shrinkage of plastic parts, due to the nature of plastic ( to expand when hot and to shrink when cold), the dimension of plastic parts after molding and cooling is smaller than that of the cavity.
working dimension of molding parts
today we discuss the working dimension of molding parts. Because it refers to the dimension in direct contact with plastic in cavity and core, […]