工艺流程及成型条件设定EC

成型工藝流程及條件介紹

Introduction to technique and parameter of molding 第一節成型工藝

Section 1 technique of molding.

1.成型工藝參數類型

types of molding parameter.

(1). 注塑參數

parameter of Injection.

a.注射量

amount of Injection .

b.計量行程

Screw back position

c.餘料量

Cushion

d.防誕量

Sucking back rate

e.螺杆轉速

Screw speed

f.塑化量

Plastic rate

g.預塑背壓

Screw back pressure

h.注射壓力和保壓壓力

Injection pressure and holding pressure

i.注射速度

Injection speed

(2)合模參數

Clamping parameter

a.合模力

Clamping force

b.合模速度

Clamping speed

c.合模行程.

Clamping stroke

d.開模力

Opening force

e.開模速度

Opening speed

f.開模行程

Opening position

g.頂出壓力

Ejector advance pressure

h.頂出速度

Ejector advance speed

i.頂出行程

Ejector advance position

2.溫控參數

Temperature parameter

a.烘料溫度

Dry resin material temperature

b.料溫與噴嘴溫度

Cylinder temperature and nozzle temperature

c.模具溫度

Mold temperature

d.油溫

Oil temperature

3.成型周期

Molding cycle

a.循環周期

Cycle time

b.冷卻時間

Cool time

c.注射時間

Injection time

d.保壓時間

Holding pressure time

e.塑化時間

Plastic time

f.頂出及停留時間

Knocking out and delay time

g.低壓保護時間

Mold protect time

成型工藝參數的設定須根據產品的不同設置.

The setting of molding parameter are different by types of product

第二節 成型條件設定

Section 2 Molding parameter Setting

按成型步驟:可分為開鎖模,加熱,射出,頂出四個過程.

Molding steps: mold opening/closing, heating, injection and knocking out. 開鎖模條件:

Mold opening parameter:

快速段 中速度

低壓 高壓速度

High-speed mid-speed

Low pressure high pressure speed

鎖模條件設定:

Mold closing parameter setting

1.鎖模一般分: 快速→中速→低壓→高壓

Mold closing: high-speed →low-speed →low pressure→high pressure

2.快速鎖模一般按模具情況分,如果是平面二板模具,快速鎖模段可用較快速度,甚至於用到特快,當用到一般快速時,速度設到55-75%,完全平面模可設定到 80-90%,如果用到特快就只能設定在45-55%,壓力則可設定於

50-75%,位置段視產品的深淺(或長短)不同,一般是開模寬度的1/3.

Mold closing speed depends on type of mold in high-speed section. For two –plate mold, it can set on the mode of quick or extra quick. The speed was set within 55-75% in the mode of quick. For full-plate mold , the speed can be set within 80-90%.While in the mode of extra quick ,the speed only can be set within 45-55% and pressure can be set within 50-75% ,The setting of position distance differs depending on the volume of product .Generally, it can be set by the digit about 1/3 of mold opening position.

3.中速段,在快速段結束后即轉換成中速,中速的位置一般是到模板(包括三板模,二板模)合在一塊為止,具體長度應視模板板間隔,速度一般設置在30%-50%間,壓力則是20%-45%間.

Mid-speed section: Mold closing speed changes into mid-speed after high-speed section finish. Start position of mid-speed is where two plates meets (include three-plate mold and two-plate mold ) . Distance of mid-speed was decided by the distance of two plates. The speed is set within 30-50% and pressure is set within 20-45%.

4.低壓設定,低速設定一般是在模板接觸的一瞬間,具體位置就設在機臺顯示屏顯示的一瞬間的數字為準,這個數字一般是以這點為標準,,即於此點則起不了高壓,高於此點則大,輕易起高壓.設定的速度一般是15%-25%,視乎不同機种而定,壓力一般設定於1-2%,有些機則可設於5-15%,也是視乎不同機种不同.

Low-pressure section: Mold closing sets low-pressure when plates meeting. This position is set by the data of machine’s display screen on this time. This point is the gauge of the data. If the data is lower than the point, there is no high-pressure. If the data is higher than the point , there is high-pressure easily. The speed is set within 15-25% and the pressure is set within 1-2% which depends on type