Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1992-08-17
1994-05-17
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
2643288, 26432815, 425572, B29C 4520
Patent
active
053122410
ABSTRACT:
A hot runner nozzle (10) with lateral electrode terminals (28) has a broad flanged body (18) that continues as a thermally graded narrower shaft (20) through which a heatable flow tube (22) extends. Into its high-strength foot portion (38), at least one nozzle tip (50, 50') is insertable; a high-strength heat-conductive envelope tube (30) having a re-entrant outer shoulder (34) adjacent the casing (12) is joined to a separating sleeve (36) of the shaft (20). The lower end of a heating tube (26) is thermoconductively connected to a metal bush (40) whose upper portion is thermally insulated by air gaps (54, 44) from both the separating sleeve (36) and the heating tube (26). A supporting ring (56) of low heat conduction is mounted between axial faces of the heat-conductive bush (40) and the separating sleeve (36). The nozzle tips (50, 50') are form-fitted or welded to the foot portion (38) at an angle between 0.degree. and 90.degree. relative to the axis (A) of the shaft (20). The foot portion (38) is centered in a divided mold insert (16) wedge-fitted into the casing (12).
REFERENCES:
patent: 4682944 (1987-07-01), Muller
patent: 4900560 (1990-02-01), Trakas
patent: 4913912 (1990-04-01), Leverenz
patent: 4921708 (1990-05-01), Gellert
patent: 4981431 (1991-01-01), Schmidt
Dipl.-Ing. Herbert Gunther Gesellschaft mbh
Heitbrink Tim
Philpitt Fred
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