B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/708
B29C 45/44 (2006.01) B29C 45/33 (2006.01) B29C 45/43 (2006.01)
Patent
CA 1206716
Abstract The object of the invention is an injection mold for the manufacture of sealing elements (D) consisting of elastic material and having undercuts, particularly sealing bellows for joints, for example ball joints in automotive vehicles, theld having followers which are divided centrally in the longitudinal direction of the sealing element (D) and form the outer contour and having a core plunger which forms the inner contour and is divided into an upper core plunger part (10) and a lower core plunger part (6) which are movable relative to each other and from which the sealing element (D) is removed after the opening of the followers. In order to be able to remove the sealing element (D) automatically from the mold without the use of parting agent it is proposed that the followers be split in transverse direction into an upper and a lower pair of followers (4 and . 3 respectively) in the region between the inner undercut of smallest diameter and the outer undercut of smallest diameter (H5 and H3 respectively), the pairs of followers being movable independently of each other, and that the lower core plunger part (6) be guided in a shaped ejection sleeve (5) which is movable relative to the lower core plunger part (6) and with its end surface forms a part of the outer contour of the end surface of the sealing element (D).
432892
Barbet Karl-Heinz
Busch Peter
Gowling Lafleur Henderson Llp
Trw Ehrenreich Gmbh & Co. Kg
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