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Factory OEM High Quality Steel Plastic Injection Mould Machine for Navigator Housing

Factory OEM High Quality Steel Plastic Injection Mould Machine for Navigator Housing
Factory OEM High Quality Steel Plastic Injection Mould Machine for Navigator Housing
Factory OEM High Quality Steel Plastic Injection Mould Machine for Navigator Housing

Factory OEM High Quality Steel Plastic Injection Mould Machine for Navigator Housing

Papler Industry Co.,Ltd utilise a rapid injection moulding a technology-driven process that leverages manufacturing automation. CAD models are sent directly to the production floor where mould milling begins, but in most cases, moulds are fabricated from aluminium, not steel. This allows for faster and most cost-effective tooling when compared to traditional steel moulds.

Injection Molding Equipment

 

  • plastic injection mould machine: 

plastic injection mould machine, also known as presses, consist of a material hopper, an injection ram or screw-type plunger, and a heating unit. Molds are clamped to the platen of the molding machine, where plastic is injected into the mold through the sprue orifice. Presses are rated by tonnage, which is the calculation of the amount of clamping force that the machine can exert. If the plastic material is very stiff, it will require more injection pressure to fill the mold, thus more clamp tonnage is needed to hold the mold closed. The required force can also be determined by the material used and the size of the part, with larger plastic parts requiring higher clamping force.

 

  • Mold: 

The mold or die refers to the tooling used to produce inject mould plastic parts. Traditionally injection molds have been expensive to manufacture and were only used in high-volume production applications where thousands of parts were produced. Molds are typically constructed from hardened steel, pre-hardened steel, aluminum, and/or beryllium-copper alloy. Selecting a material for mold building is primarily a question of economics. steel mould generally cost more to construct but offer a longer lifespan that will offset the higher initial cost over a higher number of parts made before wearing out. Aluminum molds cost substantially less than steel molds, and when higher grade aluminum such as QC-7 and QC-10 aircraft aluminum is used and machined with modern computerized equipment, they can be economical for molding hundreds of thousands of parts. Aluminum molds also offer quick turnaround and faster cycles because of better heat dissipation. They can also be coated for wear resistance to fiberglass reinforced materials. Beryllium copper is used in areas of the mold which require fast heat removal or areas that see the most shear heat generated.

 

 

Injection Molding Cycle 

 

The sequence of events during the inject mold of a plastic part is called the injection molding cycle. The cycle begins when the mold closes, followed by the injection of the polymer into the mold cavity. Once the cavity is filled, a holding pressure is maintained to compensate for material shrinkage. In the next step, the screw turns, feeding the next shot to the front screw. This causes the screw to retract as the next shot is prepared. Once the part is sufficiently cool, the mold opens and the part is ejected.

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