Casting head with toggle lever actuated valve

Dispensing – Motor operated outlet element

Patent

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Details

222509, 222518, 251 634, 425564, B29F 103

Patent

active

040748340

ABSTRACT:
A casting head for cooperation with a mold in which hardenable synthetic resins can be cast under a high temperature, comprising: a stationary and a respectively movable head part; at least one hydraulic cylinder in the stationary head part to change the relative position of a portion of the movable part, between a closed rest position and a casting position, in which latter a passage of the casting head is open to feed the resin to an inlet opening of the mold; the movable head part includes a housing with bottom and top parts; at least one toggle lever is slidably journaled and pivotable in the bottom housing part while the movable head part has therein a lengthwise movable closure rod, the outer end of the latter carrying a closure head which acts on the passage to open and close the same; and spring means for closing the passage when the pressure applied to the cylinder has been released, the spring means being compressed by way of the closure rod and the closure head when the passage is being opened. Among other optional features, a removable casting nozzle is suggested which has a low heat conductivity.

REFERENCES:
patent: 2083734 (1937-06-01), Noble
patent: 3097396 (1963-07-01), Ludwig
patent: 3912133 (1975-10-01), Hehl

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