摘要:
The invention relates to an ejector pin (8) receivable in a mould part of a mould for encapsulating electronic components mounted on a carrier, wherein the substantially cylindrical ejector pin (8) is provided with a side wall in which at least one recess (11) is arranged close to the end which makes contact with the product for ejecting. The invention also relates to a mould part (16) in which an opening is arranged for guiding an ejector pin, wherein at least one recess (19) is arranged in the wall of the opening. The invention also comprises a mould for encapsulating electronic components in addition to a method for sealing an interspace between an ejector pin and an opening in a mould part.
摘要:
A fixture (142) for fixing an annular upper air isolation member (120) which is provided around an outer side of an upper mold section (100) to an upper mounting plate (114) is released, thereby rotating the air isolation member (120) by a rotational member (140) and fixing the same by a rotational position regulating member (141). An upper chase unit (110) is exchanged through an upper opening (122) which is defined by the upper mounting plate (114) and the rotated air isolation member (120). A lower chase unit (210) is also exchanged in a similar manner. Due to this structure, a sealing mechanism for a resin sealing/molding apparatus for electronic parts which can readily and quickly exchange a mold in response to small lot production of various types of products is provided.
摘要:
A method and apparatus for forming a plastic component with at least a first and second set of integrally molded castellations for retaining an O-ring therebetween; the component therefrom; and further embracing a method and apparatus for forming such a plastic component comprising one or more filtration windows with filtration material outwardly of the castellations.
摘要:
An apparatus (10) for molding a thin-wall plastic shell includes a powder box (12) and a mold box (14). The powder box (12) is positioned to an operative position wherein an opening (18) in the powder box (12) is brought in proximity to the mold surface (20) of the mold. A bellows member (34) having a gasket (42) about the end thereof is extended from the opening (18) to perfect a sealed passageway between the opening (18) and the periphery (22) of the mold surface (20).
摘要:
Three-part vertical stack-up mold apparatus for molding a composite styled wheel (20) wherein the middle mold part is metal disc and rim (22) subassembly operable as metal street wheel when a pneumatic tire is mounted on said rim. The lower mold part defines a mold cavity (260) axially adjacent the outboard face of the disc and rim mold part and has a mold cavity surface to define an ornamental configuration for the outboard face of a plastic body of the composite wheel. An upper mold part seats (52) in the mold-closed condition against the inboard face of the disc urging the same into sealing engagment with the lower mold part. The lower mold part includes outboard body vent pocket forming cores adapted for individual registry with disc air vent openings so as to protrude therethrough into the mold cavity in the closed condition of the mold. The upper mold part includes an expansible lid seal (90) juxtaposed in mold cavity sealing relation to the disc inboard face and the cores in the mold-closed condition. The lid seal is radially outwardly expansible in response to clamping pressure of the upper mold part against the middle mold part as resisted by lower mold part during mold closure to thereby radially outwardly enlarge the sealing engagement of the lid seal against the disc inboard surface in the mold-closed condition, and vice versa during mold opening.
摘要:
Bei einer hydraulischen Presse, die insbesondere zum Formteilpressen von faserverstärkten Kunststoffen vorgesehen ist und bei der die Preßkraft durch mindestens einen hydraulischen Preßzylinder (5) über eine zugeordnete Verbindungsstelle symmetrisch von oben in den seitlich geführten und durch Gegenhalteeinrichtungen abbremsbaren Pressenstößel (9) eingeleitet wird, wird eine querkraft- und momentenarme Relativbewegung zwischen dem Kolben (Plunger 7) des Preßzylinders (5) und dem Pressenstößel (9) dadurch erzielt, daß die Verbindungsstelle durch ein hydrostatisches Lagerelement (8) gebildet ist, in das jeweils ein Teil des zugeordneten Preßzylinders (5) winkelbeweglich eintaucht.