流道设计

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
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 ]
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. in mm ]
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
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 ]
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
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
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 )
Avoid Jetting by Locating 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
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
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
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(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
沟型冷料井 竖浇道拉料杆
Grooved cold slug-well sprue puller
差的 Poor
好的 Good
阀式浇口
Valve Gate
GaBaidu Nhomakorabeae 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
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