Compact molding apparatus and method

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 33/28 (2006.01) B29C 33/20 (2006.01) B29C 45/04 (2006.01) B29C 45/14 (2006.01) B29C 45/68 (2006.01)

Patent

CA 2346236

A molding apparatus (20) including a support frame (21) and a molding method utilizing a moveable mold platen (22) and a second or door platen (26) both of which may hold, have affixed to, or carry a first or second portion of a mold. The door platen (26) is opened and shut by a hinge means (29), is movable using tie bars (70) and tie bar plates (71) and is operated by the use of a fluid cylinder (38) and control valves (88, 89, 90). The door platen (26) advances a mold base (24) adjacent a mold core (25), and is brought adjacent to the moveable mold platen (22), so that the portions of the mold engage one another. A molding material is injected into the mold cavity, after which the moveable platen (22) is retracted, the door platen (26) is opened, and the part is removed. A part to be encapsulated may be placed into the mold and held by vacuum heads (94) operated by control valves (90, 93) before the molds are closed.

La présente invention concerne un dispositif de moulage (20) comprenant un cadre support (21) et un procédé de moulage utilisant un plateau de moulage mobile (22) et un second plateau ou plateau porte (26), ces deux plateaux pouvant maintenir, contenir de manière fixe, ou porter une première ou une seconde partie d'un moule. Le plateau porte (26) est ouvert ou fermé à l'aide de moyens charnières (29), rendu mobile à l'aide de colonnes de presse (70) et de plaques de colonnes de presse (71) et il est mis en mouvement à l'aide d'un vérin hydraulique (38) et de vannes de commande (88,89,90). Le plateau porte (26) permet de placer une base de moule (24) adjacente à un noyau de moule (25), puis il est amené en position adjacente au plateau de moulage mobile (22), de manière à ce que les parties du moule s'engagent l'une avec l'autre. Un matériau de moulage est injecté dans la cavité du moule, après quoi le plateau mobile (22) est rétracté, le plateau porte (26) est ouvert, et l'objet est retiré. Un objet qui doit être encapsulé peut être placé dans le moule et maintenu à l'aide de ventouses (94) manoeuvrées à l'aide de vannes de commande (90, 93) avant que le moule ne soit fermé.

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