subject: Blow Mold Design And Processing Of Drug Stores [print this page] Cycle fast, life-long blow mold design and manufacturing is the development of blow molding industry needs. Determine the efficiency of mold elements are: l) material; 2) cooling; 3) all blank mouth design; 4) exhaust.
Making molds must have high thermal conductivity material and adequate strength cutting blade blank mouth. Most of the current production of aluminum die 70/75 is used for high alloy. As the good performance of metal machining, so the cavity usually made cutting machine. Copper alloy mold is also a good high heat and corrosion resistance. However, its high cost, expensive, then three times its weight of aluminum, may wear on the forming machine is quite serious. Is easy to use steel alloy die welding repair or Mosaic law.
Thermal conductivity than aluminum mold aluminum die cutting badly. Mouth cavity of the cut billet usually broken copper alloy or stainless steel mosaic, because the strength and hardness of cast aluminum can not meet all the requirements of the blade blank mouth.
Kirk alloy (zinc), steel castings can be produced on the master mold. Bottom pouring into the mold cavity and determine the size. As Kirk alloy strong enough to cut off the plastic, action holes and shoulder area to be copper alloy or stainless steel with a mosaic. The bottom and the neck is inlaid with the two metals. Casting mold can be used cast copper alloy production. Cast steel chamber was relatively easy, because it is relying on pressure or gravity casting. Many of these cavity mold from the steel or ceramic mold master of fine parts.
Account for the cooling in the die design is very important and challenging. Borehole cooling pipe installed in areas most in need of cooling. For better production control, most of the molds are designed with a number of independent cooling areas. Neck and the bottom of the exhaust heat needs the most, and therefore required the most effective cooling.
I cut blanks. The design of the cutting depth of blank mouth parts may be a major factor in yield and quality. Blank areas are cut mouth when the excess plastic blow molding parts into place. I cut blank may determine the type and shape of a part of the welding situation. String 6
The hard resin, the need to use steel or copper alloy material for cutting blanks mouth. Sometimes I cut blank area to use air blowing, to accelerate the plastic cooling, remove excess material, prevent the distortion components. String 2
Exhaust. In part blow molding, in order to enable the rapid escape of gas, the exhaust must die. The most common and economical method is the surface of the exhaust vent. Blasting on the cavity depth or texture processing also help exhaust. Another important reason to exhaust (to be blown into the plastic parts in close narrow range in terms of) is to show detail.
