潜伏式浇口设计
Subgate Design
n 30 w=浇口宽度[mm]
W=
15º~ 25º
gate width in mm
30 ~
A=型腔表面积[mm2 ] surface area of cavity in mm2 n=材料常数[material constant ] 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC 浇口厚度[gate thick. in mm] = nt t=零件壁厚[wall thick. in mm ]
Rectangular Edge Gate Design
L = 0.5 ~ 0.75 mm W
矩形边缘浇口设计
n A 30
W
h=nt
t
L
W = 浇口宽度 ( mm ) gate width in mm A =型腔表面积 ( mm2 ) surface area of cavity in mm2 n =材料常数 material constant 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC h =浇口厚度( gate thick. in mm ) t =零件壁厚( wall thick. in mm )
流道尺寸设计(A2)
Runner Sizing (A2)
for PE, PP, PA, POM
G :重量 weight S :零件厚度 thickness D' :参考直径 reference diameter
G( g )
D' ( mm )
流道尺寸设计(B)
Runner Sizing (B)
D = D' ‧fL
流道尺寸设计(1)
Runner Sizing (1)
D
W L 3.7
4
D :流道直径 ( mm ) runner diameter in mm W :下游塑料重量 ( g ) downstream plastic weight
L :流道长度 ( mm ) runner length in mm
流道尺寸设计(2)
Runner Sizing (2)
流道尺寸设计(3)
Runner Sizing (3)
W1 4 L1 D1 3.7 L1 30 mm 10 2 2 W1 0.9 g / cm 0.2 cm 4 cm 14 .14 g
D' :参考直径 reference diameter L :长度 length fL :长度系数 Length coefficient D :流道直径 runner diameter
L (mm) fL
Cold Slug Well Design
2d 次流道
Secondary runner
冷料井设计
3
D1 2.38 ~ 3 mm
流道尺寸设计(4)
Runner Sizing (4)
W2 4 L2 D2 3 .7 L2 80 mm
2 0 . 3 3 2 W2 W1 0.9 g / cm 3cm 4 cm 2 14 .14 g 0.19 g 2
重迭式浇口设计
Overlap Gate Design
W= n 30 w=浇口宽度 [mm] gate width in mm A=型腔表面积 [mm2 ] surface area of cavity in mm2 n=材料常数[material constant ] 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC 浇口厚度[gate thick. in mm] = nt 浇口长度[land length in mm ] L1 = 0.5~0.75 L2 = h+( w/2 ) t=零件壁厚[wall thick. in mm ]
28 .66 g D2 4.33 ~ 5 mm
流道尺寸设计(A1)
Runner Sizing (A1)
for PS, ABS, SAN, CAB
G :重量 weight S :零件厚度 thickness D' :参考直径 reference diameter
G( g ) D' ( mm )
浇口设计(避免凹陷和气泡)
Gate Design to Avoid Sink Mark & Void
澆口 gate
澆口 gate
差的 Poor
好的 Good
使用重迭浇口以避免喷流
Avoid Jetting by Using Overlap Gate
差的 Poor
好的 Good
正确的浇口位置以避免喷流
浇口
Gate
d 主流道
Primary runner
型腔
Cavity
Cold Slug Well Design
倒椎度冷料井 竖浇道拉料杆
Reverse taper cold slug-well sprue puller
冷料井设计
Z型冷料井 竖浇道拉料杆
" Z "- taper cold slug-well sprue puller
针点浇口设计
Pin Gate Design
d 0.206n t 4 A
L t
d
L = 0.5 ~ 0.75 mm d =浇口直径( mm ) gate diameter in mm t =零件壁厚( mm ) wall thick. in mm A =型腔表面积( mm2) surface area of cavity in mm2 n =材料常数 material constant 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC
凸耳浇口设计
Tab Gate Design
L= 0.5~0.75mm n W= 30 w=浇口宽度 [mm] gate width in mm A=型腔表面积 [mm2 ] surface area of cavity in mm2 n=材料常数[material constant ] 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC 浇口厚度[gate thick. in mm] h1 = n t h2 = 0.9 t t=零件壁厚[wall thick. GateCorrectly
差的 Poor
好的 Good
使用凸片浇口以避免喷流
Avoid Jetting by UsingTab Gate
使用適當的澆口形狀以避免噴流
Avoid Jetting by Profiling Gate Properly
差的 Poor
好的 Good
阀式浇口
Valve Gate
Gate Types
浇口种类
針點澆口 Pin Gate
扇型澆口 Fan Gate
潛伏澆口 Submarine Gate
邊緣(薄膜)澆口 Edge ( Film ) Gate
凸片澆口 Tab Gate
閥澆口 Valve Gate
環狀澆口 Ring Gate
沟型冷料井 竖浇道拉料杆
Grooved cold slug-well sprue puller
h
扇形浇口设计
Fan Gate Design
L= 1.3mm n W= 30 w=浇口宽度 [mm] gate width in mm A=型腔表面积 [mm2 ] surface area of cavity in mm2 n=材料常数[material constant ] 0.6 for PE, PS 0.7 for POM, PC, PP 0.8 for CA, PMMA, PA 0.9 for PVC 浇口厚度[gate thick. in mm] h1 = n t h2 = wh1/D t=零件壁厚[wall thick. in mm ]