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US 5,312,241 AGranted
Hot runner nozzle having lateral electrode terminals
AssigneeDipl. -Ing. Herbert Gunther Gesellschaft mbH
InventorHerbert Gunther
Life of this patent
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AssigneeDipl. -Ing. Herbert Gunther Gesellschaft mbH
InventorHerbert Gunther
Estimating the term…
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).
A hot runner nozzle for use in an injection molding machine, said machine having a casing comprised of a mold cavity plate and a mold insert, said nozzle comprising a flow tube, a broad flange body connected to and surrounding an upper portion of said flow tube, said broad flange body provided with electrode terminals, a slender shaft connected to said broad flange body and surrounding a middle portion of said flow tube, a thermally separating body connected to said slender shaft, a high-strength foot portion connected to said thermally separating body, at least one nozzle tip heat-conductingly attached to said foot portion and directed outwardly at an angle to the axis of said flow tube, said thermally separating body and said high-strength foot portion surrounding a lower portion of said flow tube and heating means enclosing said flow tube for heating said runner nozzle.
A hot runner nozzle assembly comprising in combination
Dependencies are inferred from the claim text.