Removal of injection-molded tie from mold by utilizing...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/00 (2006.01) B29C 45/44 (2006.01) B65D 63/10 (2006.01) D07B 7/16 (2006.01) F16G 11/14 (2006.01)

Patent

CA 2193301

In a method of injection molding a tie that includes an abutment wall surface having at least one tooth inside a locking head facing a pawl, a first mold part defines a portion of the abutment surface that includes the at least one abutment surface tooth and a second mold part defines at least a portion of a surface of the abutment wall that is on the opposite side of the abutment wall from the portion of the abutment surface that includes the at least one abutment surface tooth. The first mold part is separated from the second mold part while retaining the abutment wall in the first mold part to separate the second mold part from the opposite side of the abutment wall to thereby enable the abutment wall to flex in a direction away from the pawl into a space vacated by separation of the second mold part from the opposite side of the abutment wall so that the tie can be removed from the mold without significantly damaging the at least one abutment surface tooth.

La présente invention concerne une méthode de moulage par injection d'attaches. L'attache ainsi obtenue est constituée de la surface d'une paroi munie d'au moins une dent située à l'intérieur d'une tige de blocage faisant face à un cliquet, d'une première section de moule formant une partie de la surface de la paroi qui est munie d'au moins une dent et d'une deuxième section de moule formant au moins une partie d'une surface de la paroi qui se trouve du côté opposé de la paroi munie d'au moins une dent. La première section de moule est séparée de la deuxième et retient la paroi de cette première section pour diviser la deuxième partie de moule du côté opposé de la paroi, afin de permettre ainsi à la paroi de s'incliner dans la direction opposée au cliquet, dans un espace libéré par la séparation de la deuxième partie du moule de l'autre côté de la paroi, de manière que l'attache puisse être retirée du moule sans causer de dommages importants à la dent de la paroi.

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