Mold is industrial production medium-term a widely used technique
and equipment, the development of modern industry and technology can increase
the level of mould. According to statistics, industrial parts of 75% and rough
precision by Custom Plastic Mold 50% to finish. According to their kinds can be
divided into: cold Injection Molding, rush Die, Die Casting Mold, rubber Mold,
etc.
A, injection molding profile
1.1, practical scope:
Injection Molding practical at thermoplastics like ABS, PP, PC, PO M, etc.,
and such thermosetting plastic phenol, aldehydes, plastic, epoxy plastic used
the rubber mold;
1.2, injection molding classification:
According to the structure: SanBanstandatd of mold, mold
Press shuikou: big shuikou, some shuikou, hot water mouth
130, injection mould structure
·
moulding plastic
injection
·
plastic molding company
A, the Plastic Injection Molding parts: namely we usually say
before, back mould CORE, is also the most closely linked with products; site
B, gating system: molten plastic from the nozzle to cavity flow can be divided
into: mainstream way, split way, runner, cold material well;
C, guiding system: sure, before and after mode when shut the mould of relative
positions, generally have guiding pole, guiding set, the necessary, ejection
part also need to guide pin, guide sleeve positioning;
D, parting structure: is from mould plastic pieces of ejection device, commonly
have: thimble, roof, cheese canister, etc.;
E, temperature control system to meet the injection forming process, to mold
temperature requirements, in front and back mould for cooling channel;
F, lateral subtypes and lateral core-pulling: when the glue thing
upside down with existing is not consistent demoulding direction when they have
to use line structure of position, common form: the slider, lifter,
core-pulling, etc.;
G, exhaust structure: common exhaust form has two kinds: exhaust slot, forming
parts clearance. In order to eliminate the process of plastic injection mold in
air and shaping process produced gas, often set in parting surface air exhaust
slot. Setting the principle is, vents are not affected when overflow
anticipates the beatles, should as far as possible big spike the exhaust slot.
And ejector, thimble, set piece is to use molding parts clearance exhaust.
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