Closed loop control of injection moulding hold time

C. L. Thomas, A. A. Tseng, Joseph Lawrence Rose, A. J. Bur

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Closed loop control of the hold time set point for injection molding is demonstrated. Using feedback from a cavity pressure transducer which indicates gate seal from a feature of the pressure profile during molding, the closed loop system has demonstrated the ability to respond to changes in the machine operating point and continually produced well packed parts. This control strategy does not directly control the weight of the part or any other quality parameter. However, it ensures that every part is fully packed according to the existing molding conditions; ensures that every machine cycle operates in the minimum time corresponding to a fully packed part; and relieves the machine operator of a tedious adjustment process. These accomplishments should reduce the number of rejected parts, reduce the machine cost per part, and reduce the required operator labor.

Original languageEnglish (US)
Pages (from-to)100-113
Number of pages14
JournalEngineering plastics
Volume8
Issue number2
StatePublished - Jan 1 1995

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Injection molding
Molding
Pressure transducers
Closed loop systems
Seals
Personnel
Feedback
Costs

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Thomas, C. L., Tseng, A. A., Rose, J. L., & Bur, A. J. (1995). Closed loop control of injection moulding hold time. Engineering plastics, 8(2), 100-113.
Thomas, C. L. ; Tseng, A. A. ; Rose, Joseph Lawrence ; Bur, A. J. / Closed loop control of injection moulding hold time. In: Engineering plastics. 1995 ; Vol. 8, No. 2. pp. 100-113.
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Thomas, CL, Tseng, AA, Rose, JL & Bur, AJ 1995, 'Closed loop control of injection moulding hold time', Engineering plastics, vol. 8, no. 2, pp. 100-113.

Closed loop control of injection moulding hold time. / Thomas, C. L.; Tseng, A. A.; Rose, Joseph Lawrence; Bur, A. J.

In: Engineering plastics, Vol. 8, No. 2, 01.01.1995, p. 100-113.

Research output: Contribution to journalArticle

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Thomas CL, Tseng AA, Rose JL, Bur AJ. Closed loop control of injection moulding hold time. Engineering plastics. 1995 Jan 1;8(2):100-113.