Blow molding mold design process control1
Blow molding is the formation of hollow plastic parts manufacturing process. Blow molding, generally there are three main types, namely the extrusion blow molding, injection blow molding and stretch blow molding. Blow molding mold used in the manufacture of plastic containers, including a substrate, within the matrix can accommodate to make the body of the container and the interior surface of the substrate completely surrounded with manufacturing container, including blow molding mold has a ring to relative blow molding mold a neck support vessel, in which relative to the ring on the ring set up the circular edge inward projection distance protection device, the distance protection device to prevent, in the case of a vessel relative blow molding mold tilt the body of the container and blow molding mold wall contact. Long life blow molding mold design and manufacturing is blow molding industry demand. Decide the efficiency of the die factors are: l) Materials; 2) Cooling; 3) Cutting mouth design; 4) Exhaust. Making mould materials must have high thermal conductivity and enough cutting blade intensity. The current aluminum 70/75 is making most of the mold with advanced alloys. Because of the metal machining performance is good, so the cavity is usually made from cutting machine. Is copper alloy mould also has a high heat resistance and good corrosion resistance. But its cost is high, the price is expensive, and because the proportion of three times the aluminium, can wear more serious on the molding machinery. Be alloy steel mold is easy to repair by welding or Mosaic method. The performance of thermal conductivity of cast aluminum mold less than cutting aluminum mold. Cavity of the cutting mouth often need to break the copper alloy or stainless steel Mosaic, because the strength and hardness of the aluminum can't satisfy the cutting blade requirements
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