Injection mold

Details Injection mold Injection mold

1983-07-18

1985-06-25

Woo, Jay H.

Static molds

Mold including core and means to remove core

264334, 425554, 425577, B29C 1100

Patent

active

045249431

ABSTRACT:
An injection mold for the manufacture of sealing elements consisting of elastic material and having undercuts, particularly sealing bellows for joints, for example ball joints in automotive vehicles, includes followers which are divided centrally in the longitudinal direction of the sealing element and form the outer contour. The mold has a core plunger which forms the inner contour and is divided into an upper core plunger part and a lower core plunger part which are movable relative to each other. The sealing element is removed from the foregoing parts after the opening of the followers. In order to be able to remove the sealing element automatically form the mold without the use of parting agent the followers are split in transverse direction into an upper and a lower pair of followers in the region between the inner undercut of smallest diameter and the outer undercut of smallest diameter. The pairs of followers being movable independently of each other for successive gripping of the sealing element during opening of the mold.

REFERENCES:
patent: 2966702 (1961-01-01), Soubier
patent: 3016579 (1962-01-01), Schlitzkus
patent: 3843088 (1974-10-01), McLoughlin et al.
patent: 3905740 (1975-09-01), Lovejoy
patent: 4039644 (1977-08-01), Saumsiegle et al.
patent: 4131665 (1978-12-01), Bodson et al.
patent: 4155698 (1979-05-01), Aichinger
patent: 4209160 (1980-06-01), Vanotti
patent: 4375948 (1983-03-01), von Holdt

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