Hot runner nozzle

Details Hot runner nozzle Hot runner nozzle

1996-01-25

1998-06-02

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

26432815, B29C 4520

Patent

active

057595950

ABSTRACT:
A hot runner (10) with an externally heated material pipe (16) and die tip (26) comprises a pre-mounted heating unit (20) with a sealing body (24) which supports a pipe (40) for a heat sensor (34) in a circumferential segment (46). The sealing body (24) made in particular of brass encloses concentrically an insulated heating coil (23) in a steel pipe (22) which is mechanically protected by a partly sleeve-shaped retaining element (42). For example the sensor pipe (40) is supported in the sealing body (24) and is positively and/or adhesively retained between the edges of peripheral ends of a perforated sheet (42). The steel pipe 22) has a lateral recess (44) for inserting the connection points (36) of the heat sensor (34). The material pipe (16) is insertable into the heating device (20) and is able to conduct heat with the close positioning of its shaft (17) against the inner wall (25).

REFERENCES:
patent: 3091812 (1963-06-01), Witkowski
patent: 4586887 (1986-05-01), Gellert
patent: 4663811 (1987-05-01), Gellert
patent: 5569475 (1996-10-01), Adas et al.
Webster's Ninth New Collegiate Dictionary, p. 175, 1986.

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