Precision Plastic Injecton Mould of Projector TV with ABS Multi
Injection molding is used for manufacturing a wide variety of
parts, from small components like AAA battery boxes to large
components like truck body panels. Once a component is designed, a
mold is made and precision machined to form the features of the
desired part. The injection molding takes place when a
thermoplastic or thermoset plastic material is fed into a heated
barrel, mixed, and forced into the metal mold cavity where it cools
and hardens before being removed.
Mold and die are used interchangeably to describe the tooling
applied to produce plastic parts. They are typically constructed
from pre-hardened steel, hardened steel, aluminum, and/or
beryllium-copper alloy. Of these materials, hardened steel molds
are the most expensive to make, but offer the user a long lifespan,
which offsets the cost per part by spreading it over a larger
quantity. For low volumes or large components, pre-hardened steel
molds provide a less wear-resistant and less expensive option.
The most economical molds are produced out of aluminum. When
designed and built using CNC machines or Electrical Discharge
Machining processes, these molds can economically produce tens of
thousands to hundreds of thousands of parts. Note that beryllium
copper is often used in areas of the mold that require fast heat
removal or places that see the most shear heat generated.
The injection molding process uses a granular plastic that is
gravity fed from a hopper. A screw-type plunger forces the material
into a heated chamber, called a barrel, where it is melted. The
plunger continues to advance, pushing the polymer through a nozzle
at the end of the barrel that is pressed against the mold. The
plastic enters the mold cavity through a gate and runner system.
After the cavity is filled, a holding pressure is maintained to
compensate for material shrinkage as it cools. At this same time,
the screw turns so that the next shot is moved into a ready
position, and the barrel retracts as the next shot is heated.
Because the mold is kept cold, the plastic solidifies soon after
the mold is filled. Once the part inside the mold cools completely,
the mold opens, and the part is ejected. The next injection molding
cycle starts the moment the mold closes and the polymer is injected
into the mold cavity.
INJECTION MOLDING MATERIALS
Materials Selection: Many types of thermoplastic materials are
available. Selection depends on the specific application. The chart
below shows some of the most common materials being used.
Today, as we drive our automobiles, a great many of us, can enjoy
the same comfort levels that we are accustomed to at home and at
work. With the push of a button or the slide of a lever, we make
the seamless transition from heating to cooling and back again
without ever wondering how this change occurs. That is, unless
something goes away.
This is a frame of projector.We built this mold with 1 cavity and
the raw material of plastic parts is ABS.
Yaxing can provide the service from design to production,which we
have 9 injection machine from 50T to 650T.
Mould Design, Mould Manufaturing, Injection, Assembly etc.
2D, 3D , Samples or pictures of multiple points
15--50days, on basis of the difficulty level
Single cavity, Multiple cavity
Hot runner , Cold runner
Words corrosion, Mirror polish, Frosted surface, Dermatoglyph,
HASCO,DME or according to custom's request
Milling, grinding, CNC, EDM, Wire Cutting, Carved...
AutoCAD, ProE, UG , Solidworks, etc.
Within 3 days(generally)
ABS ,PP, PC , PA6, PA66, TPU, POM , PBT, PVC,HIPS, PMMA, PS etc...