① core cavity and a three-dimensional profile. External and internal
shape of plastic parts by direct molding cavity and core of these complex
three-dimensional surface machining more difficult, especially within the
cavity molding surface machining blind hole, if the traditional processing
methods, not only requiring high skill level of workers, auxiliary fixtures
more tools and more, and a long processing period.
② accuracy and surface quality requirements, long service life
requirements. Currently dimensional accuracy requirements are generally plastic
parts for 1T6? 1T7, dimensional precision surface roughness Ra0.2-0.1um
injection mold parts required to achieve 1T5? 1T6, surface roughness Ra0.1um
less. Long-life plastic injection mold for mention Gao efficiency and reduce
costs necessary to present the life of the injection mold generally require
more than one million times. Precision injection molding to use the stiffness
of the mold. Increase the thickness of the template Increasing support column
or cone positioning
Element to prevent deformation of the mold
under pressure, internal pressure can sometimes reach lOOMPa. Top of the device
is an important factor affecting the product deformation and dimensional
accuracy, so you should choose the best top of the point to make uniform
throughout the release. Precision injection molds most used in the structure or
spelling mosaic structure, which requires precision mold parts
interchangeability are greatly improved.
③ long process, the manufacturing time is tight. For injection molded
parts, mostly with other components to form a complete package of products, and
in many cases are in other parts have been completed, the eagerly awaiting
public on supporting injection molded parts. Because of the product's shape or
size of high precision, combined due to the characteristics of the resin
material is different, after the completion of mold manufacturing, also
requires repeated tryout and revision, enabling developers and delivery time is
very tight.
④ remote design, remote manufacturing. Mold manufacturing is not the
ultimate goal, but to present the final product design, mold making factory
according to user requirements design and manufacture molds by the user, and in
most cases, the products of other manufacturers also produce injection. This
situation resulted in the design, mold design and manufacture products,
production of products carried out in different places.
⑤ specialization, dynamic combination. Mold production volume is
small, generally belong to a single piece of production, but the mold needs a
lot of standard parts, large mold, small thimble, these should not and can not
just be done by a single manufacturer, and manufacturing process complexity,
general equipment and CNC devices use very uneven.
more information www.chinamoldmaker.org
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