Pantone/RAL Injection Moulding Kit Dinosaur Blue Box Hot Runner
Brand Name:Liqi
Certification:ISO,GE
Model Number:OEM
Minimum Order Quantity:Negotiable
Delivery Time:7-10 days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Contact Now
Add to Cart
Active Member
Location:
Quanzhou Fujian China
Address:
Anping Industrial Area Anhai town Jinjiang,Quanzhou,Fujian
Supplier`s last login times:
within 14 hours
Product Details
Company Profile
Product Details
Dinosaur Blue Box Injection Moulding Parts Hand Models Kits Set
Injection Moulding Parts Process Method:
The process cycle for Injection Moulding Parts are very short, typically between 2 seconds and 2 minutes, and consists of the following four stages:
1. Clamping - Prior to the injection of the material into the
mould, the two halves of the mould must first be securely closed by
the clamping unit. Each half of the mould is attached to the
injection moulding machine and one half is allowed to slide. The
hydraulically powered clamping unit pushes the mould halves
together and exerts sufficient force to keep the mould securely
closed while the material is injected. The time required to close
and clamp the mould is dependent upon the machine - larger machines
(those with greater clamping forces) will require more time. This
time can be estimated from the dry cycle time of the machine.
2. Injection - The Injection Moulding Parts’ raw plastic material,
usually in the form of pellets, is fed into the injection moulding
machine, and advanced towards the mould by the injection unit.
During this process, the material is melted by heat and pressure.
The molten plastic is then injected into the mould very quickly and
the buildup of pressure packs and holds the material. The amount of
material that is injected is referred to as the shot. The injection
time is difficult to calculate accurately due to the complex and
changing flow of the molten plastic into the mould. However, the
injection time can be estimated by the shot volume, injection
pressure, and injection power.
3. Cooling - The Injection Moulding Parts’ molten plastic that is
inside the mould begins to cool as soon as it makes contact with
the interior mould surfaces. As the plastic cools, it will solidify
into the shape of the desired part. However, during cooling some
shrinkage of the part may occur. The packing of material in the
injection stage allows additional material to flow into the mould
and reduce the amount of visible shrinkage. The mould can not be
opened until the required cooling time has elapsed. The cooling
time can be estimated from several thermodynamic properties of the
plastic and the maximum wall thickness of the part.
4. Ejection - After sufficient time has passed, the cooled part may
be ejected from the mould by the ejection system, which is attached
to the rear half of the mould. When the mould is opened, a
mechanism is used to push the part out of the mould. Force must be
applied to eject the part because during cooling the part shrinks
and adheres to the mould. In order to facilitate the ejection of
the part, a mould release agent can be sprayed onto the surfaces of
the mould cavity prior to injection of the material. The time that
is required to open the mould and eject the part can be estimated
from the dry cycle time of the machine and should include time for
the part to fall free of the mould. Once the part is ejected, the
mould can be clamped shut for the next shot to be injected.
Pantone/RAL Injection Moulding Kit Dinosaur Blue Box Hot Runner
Inquiry Cart
0