成型工艺流程及条件介绍

Molding technique procedure and parameter introduction

第一节 成型工艺
Section 1 molding technique.
1.成型工艺参数类型
Sorts of molding parameter.
(1). 注塑参数
Injection parameter.
a.注射量
Injection rate.
b.计量行程
Screw back position
c.余料量
Cushion
d.防诞量
Sucking back rate
e.螺杆转速
Screw speed
f.塑化量
Plastic0 rate
g.预塑背压
Screw back pressure
h.注射压力和保压压力
Injection pressure and holding pressure
i.注射速度
Injection speed
(2)合模参数
Clamping parameter
a.合模力
Clamping force
b.合模速度
Clamping speed
c.合模行程.
Clamping stroke
d.开模力
Opening force
e.开模速度
Opening speed
f.开模行程
Opening position
g.顶出压力
Ejector advance pressure
h.顶出速度
Ejector advance speed
i.顶出行程
Ejector advance position
2.温控参数
Temperature parameter
a.烘料温度
Dry resin material temperature
b.料管与喷嘴温度
Cylinder temperature and nozzle temperature
c.模具温度
Mold temperature
d.油温
Oil temperature
3.成型周期
Molding cycle
a.循环周期
Cycle time
b.冷却时间
Cool time
c.注射时间
Injection time
d.保压时间
Holding pressure time
e.塑化时间
Plant time
f.顶出及停留时间
Knocking out and delay time
g.低压保护时间
Mold protect time
成型工艺参数的设定须根据产品的不同设置.
Molding technique parameter setting differs depending on type of product
第二节成型条件设定
Section 2 Molding parameter Setting
按成型步骤:可分为开锁模,加热,射出,顶出四个过程.
Molding steps: mold opening/closing, heating injection and knocking out.
开锁模条件:
Mold opening parameter:
快速段中速度
低压高压速度
High-speedmid-speed
Low pressure high pressure speed
锁模条件设定:
Mold closing parameter setting
1锁模一般分: 快速→中速→低压→高压
Mold closing: high-speed →low-speed →low pressure→high pressure
2.快锁模一般按模具情况分,如果是平面二板模具,快速锁模段可用较快速度,甚至于用到特快,当用到一般快速时,速度设到55-75%,完全平面模可设定到 80-90%,如果用到特快就只能设定在45-55%,压力则可设定于50-75%,位置段视产品的深浅(或长短)不同,一般是开模宽度的1/3.
In high-speed section, Mold closing speed depends on type of mold. For two –plate mold it can set quick and
even especially quick usually, it set speed within 55-75%. For full-plate mold it set speed within80-90%
while using especially high speed it set speed within 45-55% and pressure within 50-75% position distance
setting differs depending on the volume of product and usually it can be set 1/3 of mold opening position.
3.中速段,在快速段结束后即转换成中速,中速的位置一般是到模板(包括三板模,二板模)合在一块为止,具体长度应视模板板间隔,速度一般设置在30%-50%间,压力则是20%-45%间.
In mid-speed section: Mold closing speed changes into mid-speed after high-speed section finish. Mid-speed start
position is where two plates meet (include three-plate mold and two-plate mold ) Distance of mid-speed is up to
distance of two plates plate it speed within 30-50% and pressure 20-45%.
4.低压设定,低速设定一般是在模板接触的一瞬间,具体位置就设在机台显示屏显示的一瞬间的数字为准,这个数字一般是以这点为标准,即于此点则起不了高压,高于此点则大,轻易起高压.设定的速度一般是15%-25%,视乎不同机种而定,压力一般设定于1-2%,有些机则可设于5-15%,也是视乎不同机种不同.

供应厂商提供--如有兴趣,可联络愿提供分享及参考各位意见.