Method and apparatus for making an article from a formable...

B - Operations – Transporting – 29 – C

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B29C 43/18 (2006.01) A61M 5/30 (2006.01) B29C 33/00 (2006.01) B29C 33/30 (2006.01) B29C 43/04 (2006.01) B29C 43/42 (2006.01) B29C 57/00 (2006.01) C03B 11/10 (2006.01) C03B 21/04 (2006.01) C03B 23/09 (2006.01) A61M 5/24 (2006.01)

Patent

CA 2266678

A method and apparatus are described for making an article such as the body of a needleless injector capsule, from a formable material, such as glass, the article having a cavity communicating with the exterior via an orifice. A blank (1a) having an open end is mounted on a first forming tool, and the open end is engaged by a second forming tool (22) while an end region of the blank (1a) adjacent the open end is in a condition to permit it to be formed. One of the tools (7a) has a pin (21) extending therefrom, and when the tools are brought together to form the end region into the desired shape the pin (21) defines the orifice.

On décrit un procédé ainsi qu'un dispositif de fabrication d'un article tel que le corps d'un cylindre d'injection sans aiguille, à partir d'un matériau pouvant être formé, tel que du verre, cet article présentant une cavité communiquant avec l'extérieur via un orifice. On monte, sur un premier outil de formage, une ébauche (1a) présentant une extrémité ouverte, puis on introduit dans l'extrémité ouverte un second outil de formage (22) tandis qu'une région d'extrémité de l'ébauche (1a) adjacente à l'extrémité ouverte est dans un état permettant sa formation. L'un de ces outils (7a) présente une broche (21) s'étendant à partir de l'outil, et lorsque les outils sont rapprochés l'un de l'autre afin de former la région d'extrémité et lui donner la forme voulue, la broche (21) délimite l'orifice.

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