Transcript Plastic Tooling DFM - Shenzhen University

I C A L
Part image
Client:
DELL
Gate type :
Model:
Berlin
Tool type:
Part name:
NA
Cavities:
Part No.:
C9415
DFM by:
I C A L
DFME follow-up issue.
Page.
OPEN POINTS
Integral Corrective Action List
side
WeiYong
1 - Date of opening (all dates in 2005)
2 - Date of beginning of action
3 - Date foreseen for validation
4 - Date of validation (closing)
SOLUTIONS / ACTION
WHO
1
2
3
P.1
Plastic Flow Analysis
Please confirm - DELL - OK
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29/08
P.2
Gate
Please confirm - DELL - OK
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29/08
Please confirm - DELL - OK
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29/08
Please confirm - DELL – MOVE TO SUIT GATE
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29/08
Please confirm - DELL - OK
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29/08
P.3,4,5,6,7,8 Parting line
P.9
EJECTOR PIN POINT LOCATION
P.10
Slider
P. 11
SUGGESTION
Please confirm - DELL – NO CHANGE
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29/08
P.12
SUGGESTION
Please confirm - DELL – NO CHANGE
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29/08
P.13
SUGGESTION
Please confirm - DELL – NO CHANGE
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29/08
P.14
QUESTON
Please confirm - DELL – NO CHANGE
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29/08
CENTERED GATE PLACEMENT IS INTENDED TO
KEEP CUSTOMER FINGERS AWAY FROM GATE
AREA
4
Plastic Flow Analysis
Gate
One side gate
top View Parting Line
bottom View Parting Line
Right Side Parting line
Left Side Parting Line
back View Parting Line
front View Parting Line
Ejector Pin Point Layout
EJECTOR PIN
EJECTOR SLEEVES
Cavity / Core / Slider / View
CAVITY SIDE GREEN ARROW
CORE SIDE PINK ARROW
SLIDER BLACK ARROW
Texture surface
Which surface need texture?
Please provide 2D drawing!!
Suggestion
All green surface need cut plastics
0.5° for cavity release.
All red surface need cut plastics
1° for core release.
Suggestion
Reverse Notch and this
view. Model is reversed to
recommendations. This
area.
Cut plastics for side gate
Concerns
Here is too thick plastics ,
it will cause sink mark.
R0.3
Suggest change the R0.3 to R1
Recommendations and Concerns
Strongly recommended the previous proposed gate location them present one. Reason for balance
packing of the far end to minimize voids problem or over pack at one end nearer to gating.
The sinkmark as per indicated on Pg#14 is not lightly to happen. Sinkmark will occur at the flat
areas for this case prefer your initial recommended gate position. (Mr Cayou
please be noted). Voids or bubble is the mains issue in the molding. Gate side be at least half the
part thickness to avoid the voids and sinkmark issue.