Electrically heated injection nozzle at the end of a hot runner

Details Electrically heated injection nozzle at the end of a hot runner Electrically heated injection nozzle at the end of a hot runner

1985-05-09

1987-07-28

Spitzer, Robert

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

425588, 425DIG227, 425572, B29C 4520

Patent

active

046829440

ABSTRACT:
The injection nozzle has a central heating rod (1) and jacket components (2 and 3), with the heating rod connected at the upper end with one (3) of the jacket components and at the lower end, through a fork (8), with the other (2). The jacket components are electrically insulated from each other by disks (4 and 5) and demarcate an annular channel (15) for the plastic to flow through. The plastic is introduced into the channel at the top and through exits (14) at the bottom into the supply aperture of an injection mold. The nozzle has two points (11) at the bottom, each extending into or into the vicinity of one supply aperture to a mold cavity. Two mold cavities can accordingly be simultaneously filled with plastic by one injection nozzle.

REFERENCES:
patent: 3822856 (1974-07-01), Gellert
patent: 4094447 (1978-06-01), Gellert
patent: 4171941 (1979-10-01), Votsutsuji et al.
patent: 4285660 (1981-08-01), Mueller
patent: 4340156 (1982-07-01), Muller
patent: 4344750 (1982-08-01), Gellert
patent: 4450999 (1984-05-01), Gellert
patent: 4492556 (1985-01-01), Crandell
patent: 4514160 (1985-04-01), Davidsmeyer
patent: 4580037 (1986-04-01), Muller

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