成型工艺流程及条件介绍/Molding technique procedure and parameter introduction

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.
Low-pressure section: Mold closing sets low-pressure when plates
meeting. This position is set to the data of machine screen on this time.
This point is the gage of the data. Data lower the point there is no
high-pressure. Data higher the point there is high-pressure easily. It set
speed within 15-25% and pressure within 1-2% depending on type within
1-2% depending on type of injection molding machine.
5.高压设定,按一般机台而言,高压位置机台在出厂时都已作了设定,相对来讲,是不可以随便更改的,比如震雄机在50P.速度相对低压略高,大约在30-35%左右,而压力则视乎模具而定,可在55-85%中取,比如完全平面之新模,模具排气良好,甚至于设在55%即可,如果是滑块较多,原来生产时毛边也较多,甚至于可设在90%还略显不足.
High-pressure section: To normal injection molding machine,
high-pressure position had been set before they were sent to customer. It can not
be modified. For example high-pressure position of CHENHSONG machine is
50P.The speed of high-pressure section is about 30-35% and higher than
that of low-pressure. The pressure is up to mold, it can set within
55-85% For full-plate mold, it’s eject air well, it can set pressure 55%
.If mold has a lot of slides and flash rate high in production,
pressure can set 90%.
加热工艺条件设定
Heating technique parameter setting
1.加热段温度设定必须按照产品所使用的原料的不同而不同,但却必须遵循一个这样的规则,即由射口筒到进科段温度是逐步递减的.且递减温度是以10.度为单位.
The proper temperature setting differs depending on type of resin
material, but it must be abide by a rule that temperature setting should
diminish in step 1０.C from nozzle to feeding resin material position.
2特殊情况下.如料头抽丝,则射口筒温度应降低,如果是比较特殊的原料冷凝比较快的.则射口筒温度则不止比第二节法兰温度高10度.比如PPS.
尼龙等.
Nozzle temperature setting should low if product line. If resin
material such as PPS, PA, cool very soon , Nozzle temperature should higher
more 10.C than the second cylinder temperature.
3.机台马达启动温度视乎机台不同而不同,一般出于对机台油路中的油封保护需要,油温最好能控制在40度-60度,以免油封长期高压而变化,缩短使用寿命,造成成型不稳定.
Pump turning on temperature is different depending on type of injection
molding machine. To protect oil seal of machine it set oil temperature
within 40.C-60.C, If oil seal work on condition that high pressure and
damaged It’s work time will be shorter, it can cause molding stable.