HẮT_12144031_3_VN

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REPORT
DESIGN AND MANUFACTURING PLASTIC MOULD

CONTENT
NOTICES about THE SHAPE oF PRODUCT DESIGN PRODUCTS
FOR INJECTION INJECTION MOLD


Content

The shape of the product
The thickness of the product
circle Corner nerve
Lugs protruding? hole on product? Corner
exit mold? thread on products


The thickness of the product.
Nên thiết kế thành mỏng, tạo nhiều gân tăng độ cứng


Figure 1.1 The transition from part design


The related disability
Hìn 1.2 Common disabilities when designing the thickness mismatch.


warping

Fg 1.4 warping the uneven thickness.


Remedy

Figure 1.5 Comparison.

To correct the warping, the need to design a uniform thickness,
the following
is some way designed to make uniform thickness:


circle Corner
By about 25-60% boron corner thickness, 50% is the best

Outer radius radius should equal the thickness of the product plus: R = r+ T.


circle Corner

Figure 2.2 Dimensions Design bo corner.
floors


Defects involving round corner


RIBS
The thickness tendon thickness not exceeding ½ set tendon

• tendon thickness affects the priority flow
Geometric parameters of the tendon
Tendon thickness: t = <0.5T
Nearby Height: h = <3T
Bo corner radius: r> = (0.25-0.5) T
Research Corner: ᶲ> = 0.5 degrees
The distance of the tendon: S> = 2T


The thickness of the tendon does not exceed
the ½ thickness placed near, the site
less shrinkage material and does not affect the aesthetic can put a little thick.


Figure 3.2 The designations tendon.

The ribs should be placed along one direction to achieve
good rigidity.


RIBS
The ribs should be designed in parallel.
• It should be placed along a direction to increase the stiffness
Create corrugated ribs increase the strength and aesthetics.
• Create cross tendon cungvung increases, resistance to stress.


Reinforcement such

The design parameters stiffening ribs

Vấu lồi
The thickness is less than 75% lugs protruding put the lug thickness.

Outer radius equal to 25% transition
should put the paw thickness
or by 0.04mm to reduce stress.




DESIGN

• The taper angle of 0.5 degrees in addition to the minimum
and should taper in the smallest
0.25 degrees.
• The lugs protruding far into the product put up extra hard
team tendon increase
firmly.


DESIGN SIZES


5. hole on products
• hole depth does not exceed 3 times the diameter of the hole (hole not informed).
• Lengths of holes evenly, without the
sharp corner..

• Two hole distance or distance than the outer edge of the hole
should equal twice the thickness or twice size
measure the circumference most hole (hole smoothly).


6. DRAFT ANGLE

• Products with ribs, lugs protruding, deep groove ... or beveled surface, you
should
design towards open mold taper angle.
• We can rely on to design the diagram below for proper taper angle.


• The value depends on the angle shoulder of plastic shrinkage and height
Slovak.
• Structural molds suitable for easy product.


7 Products with thread
Lace and lace foot radius should be greater focus to avoid application
productivity.