Mold comprising shells and at least one slide

Patent metadata

Field	Value
Publication number	US-9643341-B2
Application number	US-201414765614-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Feb 4, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A mold includes a first shell and a second shell that are suitable, in the closed position, for imparting a shape to a part that is to be molded in the mold, a main axis being perpendicular to the main plane in which the first shell and the second shell extend. The mold further includes a slide that is situated between the first shell and the second shell and that is in contact with the first shell and the second shell when the mold is in the closed position, and that is to come into contact with the molded part, the slide presenting a first face that constitutes its interface with the first shell, the first face presenting a primary direction along which the slide is suitable for sliding along the first face when the mold is in the open position.

First claim

The invention claimed is:

1. A mold, comprising:
a first shell and a second shell that are suitable, in a closed position, for imparting a shape to a part that is to be molded in said mold, a main axis being perpendicular to a main plane in which said first shell and said second shell extend; and
first and second slides that are situated between said first shell and said second shell and that are in contact with said first shell and said second shell when said mold is in the closed position, and that are to come into contact with said molded part, each of said first and second slides presenting a first face that constitutes an interface with said first shell, said first face presenting a primary direction along which each of the first and second slides is suitable for sliding along said first face when said mold is in the open position, the first slide being suitable for moving in translation in the main plane in a longitudinal direction along a longitudinal axis when the mold is in the open position, and the second slide being suitable for moving in translation in the main plane in a direction perpendicular to said longitudinal axis,
wherein a contact interface between each of the first and second slides and the second shell is situated in line with a contact interface between the first shell and the second shell, in a direction having a non-zero component with respect to the main axis.

2. The mold according to claim 1 , wherein each of the first and second slides presents a second face in contact with said second shell, said second face being an outer face and being such that in any transverse plane of one of the first and second slides, there exists a main direction defined by a line Δ at an angle β that lies strictly between 0° and 90° relative to said main axis, in such a manner that the second face of one of the first and second slides and said second shell are suitable for sliding relative to each other along said second face in said main direction when said mold is in the open position, the angle β between said line Δ and said main axis being constant regardless of the transverse plane of one of the first and second slides in which said line Δ extends.

3. The mold according to claim 1 , further comprising:
at least one return device that is suitable for exerting a force between said first shell and said second shell in such a manner as to move the first shell and the second shell apart from each other away from the closed position of the mold towards the open position of the mold.

4. The mold according to claim 1 , wherein when the mold is in the closed position, the second shell prevents movement in radial translation of each slide.

5. The mold according to claim 1 , wherein the first shell includes a border which surrounds a section of an inner portion of a surface of the first shell which is to be filled by the part that is to be molded, the border forming a fraction of a perimeter of the inner portion in the main plane, and the border being elevated relative to the inner portion so as to contain material of the part to be molded on the inner portion.

6. The mold according to claim 5 , wherein when the mold is in the closed position, the first and second slides are in contact with each other and with the border so as to form the entire perimeter of the inner portion.

Assignees

• Snecma
• Safran

Inventors

• Varin Franck Bernard Leon
• Chauvin Thierry

Classifications

• B29C33/44

  with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles · CPC title

• B29C37/005

  Compensating volume or shape change during moulding, in general · CPC title

• B29C45/33

  having transversely, e.g. radially, movable mould parts · CPC title

• B29C33/30 Primary

  Mounting, exchanging or centering {(moulds, mould parts or cores; B29C33/485 takes precedence)} · CPC title

• B29C33/0044 Primary

  for sealing off parts of inserts projecting into the mould cavity · CPC title