Engineer berbagi cerita: Daftar isi

Jumat, 27 Mei 2016

Daftar isi

1 Dasar-dasar injeksi plastik

1.1 Pemahaman awal plastic injection

1.1.1 Konsep injeksi plastik ke dalam mold

1.1.2 Cycle time

1.1.3 Mesin injeksi

1.1.4 Tuntutan & batasan umum

1.1.4.1 tuntutan umum

1.1.4.2Batasan mesin manufaktur

1.1.4.3Batasan assembly

1.1.4.4 Batasan mesin plastic injection

1.2 Produk design

1.2.1 Ketebalan produk

1.2.2 Rib

1.2.3 Boss

1.2.4 Gusset

1.2.5 Draft

1.2.6 Lubang

1.2.7 Undercut

1.2.8 Molded-In Threads (ulir)

1.2.9 Lettering

1.2.10 Toleransi

1.3 Material plastik

1.4 Masalah-masalah pada injeksi molding

1.4.1 Masalah cooling /pendingin

1.4.1.1 Cycle time terlalu lama

1.4.1.2 Mold hot spot

1.4.1.3 Cooling tidak seragam

1.4.2 Masalah flow

1.4.2.1 Hesitation

1.4.2.2 Shrinkage berlebihan

1.4.2.3 Overpacking

1.4.2.4 Racetrack effect

1.4.2.5 Unbalance flow

1.4.2.6 Underflow

1.4.3 Masalah mold

1.4.3.1 Udara terjebak/ air trap

1.4.3.2 Flash

1.4.3.3 Flow mark

1.4.3.4 Jetting

1.4.3.5 Short shot

1.4.3.6 Sink mark dan void

1.4.3.7 Warpage/ bending

1.4.3.8 Weld line dan meld line

2 Mold Basics

2.2 Mold Base dan Cavity

2.3 Molding Undercut

2.4 Part Ejection

2.5 Mold Venting

2.6 Sprue, Runner, dan Gate

2.6.1 Sprue

2.6.2 Runner

2.6.4 Gate

2.6.5 Gate Optimization

2.6.6 Posisi gate

2.6.7 Hot-Runner System

2.6.8 Hot-Runner Design

2.6.9 Hot-Runner Gate

2.6.10 Valve Gate

2.9 Thermal Expansion and Isolation

2.9.1 Flow Channel Size

2.10 Mold Cooling

2.10.1 Mold-Cooling Considerations

2.10.2 Cooling-Channel Placement

2.10.3 Cooling-Line Configuration

2.10.4 Coolant Flow Rate

2.11 Mold Shrinkage

2.12 Mold Metals

2.13 Surface Treatments

2.14 Mold Cost and Quality

2.15 FEA

3 Komponen & Standard parts

Antara satu perusahaan dan yang lain seringkali penamaan komponen sedikit berbeda.

3.1 Komponen standard

3.1.1 Ejector rod

3.1.2 Stopper stroke

3.1.3 Sekat cooling

3.1.4 Mold lock

3.1.5 Mold leg

3.1.6 Support pin collar

3.1.7 Plug tembaga

3.1.8 Manifold cooling

3.1.9 Manifold hydraulic

3.1.10 Mold positioning

3.1.11 Taperlock

3.1.12 Insulating plates

3.1.13 Support pillar

3.1.14 Ejector cover

3.1.15 Parting plate

3.1.16 Lifter rod

3.1.17 Lifter guide

3.1.18 Sepatu lifter

3.1.19 Slide block/ swifel base

3.1.20 Wear plate

3.1.21 Guide rail

3.2 Standard parts

3.2.1 Stop ring

3.2.2 Ejector pin

3.2.3 Ejector blade

3.2.4 Ejector sleeve

3.2.5 Ejector block

3.2.6 Locating ring

3.2.7 Sprue bush

3.2.8 Recycle & date mark pin

3.2.9 Ball plungers

3.2.10 Slide core units

3.2.11 Runner lock pin

3.2.12 Taper block set

3.2.13 Locking blockset

3.2.14 Stop bolt

3.2.15 Puller bolts

3.2.17 Tension link

3.2.19 Cooling fitting

3.2.20 Baffle boards

3.2.21 Screw plugs

3.2.22 Dowel pin

3.2.24 Stripper bolt

3.2.25 Shoulder bolts

3.2.27 Spring

3.2.28 Urethane spring

3.2.29 O-ring

3.2.30 Hydraulic ejection

3.2.31 Pneumaticejection

3.2.32 Limit switch

3.2.33 Eye bolts

3.2.34 Hot runner

3.2.35 Sprue puller

4. Umum

4.1 Kontur setting mch

4.2 Machining plan

4.3 Wire cut drawing

4.4 Gun drill drawing

4.6 Non rotating parts

4.9 Cavity mark

4.10 Produk presisi

4.11 Deep draw ejection

4.12 Delayedejection

4.13 Positive ejection return

4.14 Spring loaded return pin

4.15 Early return ejector plateconstruction

4.16 Pry bar slots

4.17 Stripping undercut

5. Proses design

5.1 Kelengkapan data awal

5.2 Part validasi

5.3 Perhitungan dan standard

5.4 Mold validasi

5.5 Form standard

6 Contoh-contoh design produk dan masalahnya

7 Referensi