Trouble Shooting in Plastic Injection Molding Machines
– By Zafar Kamal
The purpose of this thesis is to find the solution of those problems which occur during plastic injection molding process. Molding cycle problem analysis is an important field in plastic injection process. It is very necessary to catch the problems during operation. Therefore on the basis of research trouble shooting criteria is prepared.
Good quality control is an essential feature for finding any sort of fault. Quality control is associated with each and every step of operation to maintain the required shape and surface finishing.
Most of the molding problems are solved by varying the machine conditions and by changing the design of the mold. But some problems remain unchanged, therefore in such cases possible solution may be find out by means of examining the entire operation or by changing the variables. Therefore on the basis of this research a trouble shooting program or a program solver is prepared, which helps to get the correct solution of the problems.
ACKNOWLEDGMENT
I would like to thank my adviser Dr. Steve Kotefski for his guidance and advice in this research. I also thank Mr. Mohammed Nawaz without whose help completion of this work would have been difficult.
I would like to thank my friend Asim Zubeiri for his kind help during this research.
Specially, I am grateful to my cousin Aisha Nizam, who morally supported me to finish this degree.
Finally, I would like to thank my family, for their help, understanding and patience during the years that I studied.
TABLE OF CONTENTS
1. PROCESSING OF PLASTIC
2. MOLDING AND FINISHING
3. CLAMP SYSTEM
4. SYSTEMS FOR INJECTION MOLDING MACHINE
5. INJECTION MOLDING TECHNIQUES
6. FEED SYSTEM
7. DESIGN OF THE GATES
8. PLASTIC MOLDING
9. POLYETHYLENE AND POLYPROPYLENES
10. CONTROL OF PROCESS
11. DIE TOLERANCES FOR PLASTIC MOLDING
12. TROUBLE SHOOTING PROGRAM
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