Control device for the mechanical thermal adjustment of the nozz

Details Control device for the mechanical thermal adjustment of the nozz Control device for the mechanical thermal adjustment of the nozz

1993-10-13

1995-01-17

Nguyen, Khanh

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

425143, 425466, 264 401, B29C 4792

Patent

active

053821467

ABSTRACT:
The invention relates to a control device for the mechanical or thermal adjustment of the nozzle (1) of an extruder for elongate products (2). In order to eliminate components for wall thickness fluctuations in the longitudinal direction of the elongate product (2) when determining the wall thickness of the elongate product (2) over its width or its periphery, a stationary ultrasonic measuring head (3) is provided in addition to a rotating or reversing ultrasonic measuring head (4). The measured values of the two measuring heads (3, 4) are so linked to one another in an evaluating unit (5) that it is possible to derive therefrom for the controller a correcting variable which leads to an adjustment of the nozzle (1) only if the wall thickness deviations discovered are due to an adjustment error at the nozzle (1).

REFERENCES:
patent: 3844870 (1974-10-01), Donoghue et al.
patent: 4551289 (1985-11-01), Schwab et al.
patent: 4734922 (1988-03-01), Harris
patent: 4749531 (1988-06-01), Borger et al.
patent: 4804557 (1989-02-01), Anthony, Jr. et al.
patent: 5120212 (1992-06-01), Reiber et al.
patent: 5169649 (1992-12-01), Sikora et al.
Plastveranbeiter Bd. 43, Nr. 8, August, Speyer Am Rhein, pp. 37-40--42-43, Ernst Kruger, Rolf Diederichs, Reinhard Klose, `Das Wie und Wo von Ultraschall bei der Automatiserung`.
Plastverarbeiter Bd. 34, Nr. 6, Jun. 1983, Speyer Am Rhein, p. 541, `Mess-und Regelsystem fur Breitschlitzextruder`.

Affiliated with

Also associated with

Rating

Control device for the mechanical thermal adjustment of the nozz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control device for the mechanical thermal adjustment of the nozz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for the mechanical thermal adjustment of the nozz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-744060