Standard |
MCA 233 – Mold Construction I
Emphasizes practical application of principles of Mold Design I. Students will design piece parts and mold bases on the drawing board for production. Topics include: design of piece part; design of injection mold; and calculations of projected areas, clamping pressure, short volume, and weight of assigned piece part.
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Competency Areas |
Hours
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Design of Piece Part |
Class |
0 |
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Design of Injection Mold to Include Mold Components, Runners, Gates, and Vents |
D. Lab |
4 |
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Calculations of Projected Areas, Clamping Pressure, Shot Volume, and Weight of Assigned Piece Part |
P. Lab/O.B.I. |
6 |
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Credit |
4 |
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Prerequisite: |
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Corequisite: |
MCA 230, MCA 232 |
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Course Guide |
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Competency |
After completing this
section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/
O.B.I. |
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DESIGN OF PIECE PART |
0 |
20 |
0 |
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Drawing or sketching |
Demonstrate drafting/drawing skills by drawing or sketching a piece part. |
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DESIGN OF INJECTION MOLD TO INCLUDE MOLD COMPONENTS,
RUNNERS, GATES, AND VENTS
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0 |
20 |
30 |
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Drawing or sketching |
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Draw the location of runners, gates, and vents. |
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Create an assembly view showing the location of injector port and ejector system. |
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CALCULATIONS OF PROJECTED AREAS, CLAMPING PRESSURE,
SHOT VOLUME, AND WEIGHT OF ASSIGNED PIECE PART
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0 |
0 |
30 |
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Math processes |
Using appropriate mathematical equations, calculate the volume of the assigned piece part. |
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Calculate the clamping pressure required to mold a given piece part. |
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Calculate the cavities' total clamping pressure. |
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Determine what machine the mold can fit. |
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Describe the relationship between material costs and molding material weight and volume. |
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Suggested Resources |
Allyn, E. (1987). Mold design I: For plastic injection. Woodstock, NY: Allyn Air.
Bhattacharya. (1987). Metal-filled polymers: Properties and applications. New York:
Dekker.
Birley, A. W., et al. (1988). Plastics materials: Properties and
applications (2nd ed.). New York: Chapman & Hall.
Brown, R. L. (1980). Design and manufacture of plastic parts. New York: John Wiley &
Sons.
Calvert, E. (1980). Injection moulding. Philadelphia: Trans-Atl Phila.
Chkeremisinoff. (1989). Handbook of polymer science and technology: Performance properties of
plastics and elastomers (Vol. 2). New York: Dekker.
DuBois, J. H., & Pribble, W. I. (1987). Plastics mold design engineering handbook
(4th ed.). New York: Van Nos Reinhold.
Dym, J. B. (1987). Injection molds and molding (2nd ed.). New York: Van Nos Reinhold.
Epstein, G., & Schwartz, S. (Eds.).
(1985). Mold design and moldmaking for
plastics products. New York: T-C Pubns CA.
Gastrow, H., & Stoeckhert, K. (1983). Injection molds: One hundred two designs.
New York: Oxford University Press.
Glanvill, A. B., & Denton, E. N. (1965). Injection-mould design fundamentals. New
York: Industrial Press.
Isayev, I. A. (1987). Injection and compression molding fundamentals. New York: Dekker.
Johannaber, F. (1983). Injection molding machines: A user's guide. New York: Oxford
University Press.
Menges, G., & Mohren, P. (1986). How to make injection moulds. New York:
Oxford University Press.
Nyborg, R. L. (1990). Plastic injection molding made easy. Provo, UT: Regal Pubns.
Robinson, J. S. (Ed.). (1981). Plastics molding: Equipment, processes, and
materials. Lake Mary, FL: Polymers and Plastics Tech Pub.
Rosato, D. V., & Rosato, D. V. (1985). Injection molding handbook. New York:
Van Nos Reinhold.
Rosato, D. V., & Rosato, D. V. (Eds.).
(1989). Blow molding handbook. New
York: Macmillan.
Schwartz, S., & Goodman, S. (1982). Plastics materials and processes. New
York: Van Nos Reinhold.
Society of Plastics Engineers Staff. (1985). Tooling challenges for the 80's: Injection
molding tooling: Design, materials, methods. New York: Bks Demand UMI.
Sors, L. (1981). Plastics molds and dies. New York: Van Nos Reinhold.
Sors, L., & Balazs, I. (1989). Design of plastic moulds and dies. New
York: Elsevier.
Stoeckhert, K. (1983). Mold-making handbook: For the plastics engineer. New York: Oxford
University Press.
T-C Pubns CA. (1981). Proceedings of SPE Pactec '81, August 25-27, 1981, Los Angeles,
California. New York: Author.
T-C Pubns CA. (1983). Foams: Molding thermosetting and thermoplastic structural foam. New
York: Author.
T-C Pubns CA. (1983). Injection molding-plastics. New York: Author.
T-C Pubns CA. (1984). Injection molding machinery and accessories, 1976-January 1985. New
York: Author.
T-C Pubns CA. (1984). Injection molding of plastics. New York: Author.
T-C Pubns CA. (1984). Mold release agents for rubbers and plastics, 1973-1986. New York:
Author.
T-C Pubns CA. (1984). Reaction injection molding of polymers. New York: Author.
T-C Pubns CA. (1985). Machining processes and properties of plastics and elastomers,
1973-April 1985. New York: Author.
Tobin, W. J. (1985). Quality control manual for injection molding. New York: T-C Pubns
CA.