Method of manufacture of an injection molding integral heated pr

Details Method of manufacture of an injection molding integral heated pr Method of manufacture of an injection molding integral heated pr

1984-12-10

1986-09-16

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Electrical device making

228221, H05B 300

Patent

active

046113940

ABSTRACT:
This invention relates to a method of manufacturing integral melt conveying nozzle probes for injection molding. The generic term nozzle probe is used herein to include both nozzles through which the melt flows centrally and probes which it flows along the outside of. The method includes forming a stainless steel outer member to receive an electrical heater member therein with a longitudinal space therein. A long thin thermocouple sleeve having a closed forward end is located in the space, which is then sealed against leakage by applying a nickel brazing paste to the joints and brazing them in a vacuum furnace. Copper is then cast into the space in a vacuum furnace to provide a metallurgical bond between the highly conductive copper and the heating element, the thermocouple sleeve and the other parts of the nozzle probe. After casting, a long thin drill is inserted into the sleeve to drill through the closed forward end and a predetermined distance into the copper. The use of the sleeve avoids the problem of the drill wondering slightly off line and ruining the whole unit. A thermocouple can be removably inserted into the bore with its head precisely located in the highly conductive material adjacent the forward end of the nozzle probe to provide an accurate and reliable measurement of temperature in this critical area.

REFERENCES:
patent: 4120086 (1978-10-01), Crandell
patent: 4238671 (1980-12-01), Gellert
patent: 4355460 (1982-10-01), Gellert
patent: 4376244 (1983-03-01), Gellert
patent: 4403405 (1983-09-01), Gellert
patent: 4424622 (1984-01-01), Krause

Affiliated with

Also associated with

Rating

Method of manufacture of an injection molding integral heated pr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacture of an injection molding integral heated pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacture of an injection molding integral heated pr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1989138