Injection Molding
To register, fill out the registration form and fax it to (978) 934-2028. For more information about
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5 DAY LECTURE/WORKSHOP
OFFERED FIVE TIMES:
January 11-15, 2010 (CRS# 00.716-001)
March 15-19, 2010 (CRS# 00.716-002)
June 7-11, 2010 (CRS# 00.716-011)
July 12-16, 2010 (CRS# 00.716-012)
August 2-6, 2010 (CRS# 00.716-021)
8:30am-5:00pm
TUITION: $1495
OVERVIEW
This seminar provides comprehensive information about the injection
molding process, and covers both the underlying engineering principles as
well as their application in the molding environment. Classroom lectures
cover the basics of the injection molding process and provide practical
analyses that yield results and can be applied in the molding shop.
Injection molding workshops supplement the class material to provide
experience with actual machine operation and practical molding techniques.
Machine start-up, operation and shutdown procedures are demonstrated.
Molding trials that show the relationships between processing variables and
part quality are conducted.
Workshop emphasis is on practical setup
procedures that optimize molding cycle and product requirements.
Troubleshooting techniques and solutions to practical molding problems are
also addressed.
CONTENT
Overview of the Injection Molding Process
- Molding behavior of thermoplastics; molding functions - plastication & injection, forming &
solidification; machine & mold operations, machine sequence; process sequence &
variables - plastication, injection, packing & holding, cooling
Plastics Materials and Their Molding Requirements
- Molecular structure - polymer
types, amorphous vs. crystalline; thermal characteristics - transitions & energy
requirements; flow characteristics - non-Newtonian effects
Plastic Melting, Filling, Holding and Cooling
- Processing mechanisms -
feeding, melting & mixing; screw problems & solutions; special screw options:
mixing, multi-stage
- Isothermal cavity filling -
filling modes - filling problems; thermal effects - flow length, orientation,
stresses; runner & gate flows, flow balancing; pressure requirements - pressure
traces; packing/holding & cooling-heat transfer effects; pvT applications
Elements of Injection Molds
- Mold types & configurations:
2-plate, 3-plate, stack, etc.; ejection systems; cooling systems; thermal
systems/hot runners
Injection Molding Machinery
- Injection units - variants &
options; clamp systems - toggle, hydraulic, hydromechanical;
hydraulic/electrical systems, energy saving features; specialized machines:
multicomponent, coinjection, gas-assist, etc.
Process Setup and Troubleshooting
- Scientific and decoupled molding* concepts; troubleshooting; cycle time minimization and yield
Process Monitoring & Control
- Machine and mold sensors; proportional & servo valves; closed-loop control; velocity and temperature
profiling; statistical process monitoring
WORKSHOPS
Attendees will use both electric and hydraulic molding machines, and
non-instrumented and instrumented molds.
ENROLLMENT LIMIT
Course enrollment is limited to 12 students.
INSTRUCTORS Dr.Stephen Petrie and Andy Routsis
© 1995-2009 University of Massachusetts Lowell,
Continuing Studies, Corporate & Distance Education