Lab 6 Plastic Injection Moulding (1)

UNIVERSITI TEKNOLOGI MARA FAKULTI KEJURUTERAAN MEKANIKAL UiTM (Pulau Pinang)

Program : Bachelor of Mechanical Engineering (Manufacturing) (EM241) Course : Manufacturing Processes Laboratory Course Code : MEM564

LAB SHEET NO : 6 Manufacturing Processes Laboratory

1.0 TITLE : Plastic Injection Moulding

2.0 OBJECTIVES: 1. To st u d y t h e p r in cip le o p er at io n o f a p last ic in ject io n m o u ld in g m ach in e 2. To p r o d u ce a sim p le p last ic p r o d u ct u sin g t h e m o u ld an d m ach in e 3. To in sp ect t h e q ualit y o f p r o d u ct g en er at ed u sin g t h e m ach in e 3.0 INTRODUCTION: An In ject io n m o ld in g m ach in e, also kn o w n as an in ject io n p r ess, is a m ach in e f o r m an u f act u r in g p last ic p r o d u ct s b y t h e in ject io n m o ld in g p r o cess. Th e p last ic in ject io n d evice w o r ks b y h eat in g t h e p last ic m at er ial & in ject in g in t o m o ld cavit y. It can b e id eal, b ecau se it m ay g en er at e st r o n g er an d p r ecise p r o d u ct s. Th e m o ld in ject io n w ill p er m it t h e lef t o ver p last ics t o b e r eu sed an d m elt ed ag ain . Th e p last ic in ject io n

m o ld in g m ach in e can b e t h e essen t ial in t h e p r o cess o f m an u f act u r in g o f p last ic p ar t s. 4.0 APPARATUS MATERIALS: Plast ic p ellet s o r an y o t h er m at er ials in t h e lab EQUIPMENT: Plast ic In ject io n Mo u ld in g Mach in

5.0 EXPERIMENTAL PROCEDURE i. To p r ep ar e/f ix t h e m o u ld in p lace ii. Mixin g an d p r ep ar in g t h e p ellet s in t o t h e h o p p er iii. Gen er at e t h e in ject io n m o u ld in g m ach in e u sin g ap p r o p r iat e t em p er at u r e an d co n d it io n s. iv. Par t in g t h e m o ld an d o b t ain t h e p r o d u ct V. In sp ect t h e p r o d u ct q u alit y 6.0 RESULTS & DATA ANALYSIS Dem o n st r at e t h e p r in cip le o p er at io n o f p last ic in ject io n m o u ld in g u sin g ap p r o p r iat e d iag r am s. Lab el all t h e p ar t s in t h e m ach in e an d exp lain t h e f u n ct io n alit y o f each sect io n .

7.0 DISCUSSION OF RESULT By in sp ect in g t h e p r o d u ct o b t ain ed , d iscu ssed t h e p o ssib le d ef ect s o ccu r r ed af t er t h e in ject io n m o u ld in g p r o cess. Discu ss p ar am et er s in vo lved t o p r o d u ce t h e p last ic p r o d u ct s. 8.0 CONCLUSION 9.0 RECOMMENDATION 10.0 REFERENCES