Method and device for producing a profiled rim on a component, and glazing provided with a profiled rim
First Claim
1. A method for producing a profiled bead made of a plastic on a piece, comprising:
- positioning a flexible mold including a forming face and a flexible support on a support frame, wherein the forming face is supported by the flexible support which has a shape that can vary under pressure of a fluid;
fixing the piece with respect to the support frame via rests positioned beneath the piece such that the forming face is not pressed against the piece when the flexible support is not inflated by the fluid;
positioning a mating mold on the support frame such that the mating mold is in contact with the support frame and the forming face is not pressed against the mating mold when the flexible support is not inflated by the fluid;
after the fixing the piece and the positioning the mating mold, inflating the flexible support with the fluid such that the forming face moves from a position not pressed against the mating mold or the piece to a position in contact with at least a partial portion of an edge region or lateral face region of a surface of the piece and the mating mold to form a cavity in which the plastic is deposited without the mating mold contacting the piece; and
depositing, in the cavity, the plastic to be stuck to at least part of a periphery of the surface of the piece not covered by the forming face and defining external dimensions of the profiled bead by the forming face and the mating mold.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for producing a profiled bead made of a plastic, particularly of a polymer, on a piece, particularly on a window pane. In the method at least a partial portion of an edge region or lateral face region of a surface of the piece is brought into contact with a forming face. The plastic is deposited stuck to at least part of the periphery of a surface of the piece untouched by the forming face and the external dimensions of the profiled bead formed are also defined by the forming face. The forming face is pressed against the edge region or lateral face region of the fixed piece using a flat support, the shape of which can vary under the pressure of a fluid. This then gives a better matching of the forming face to the contour and to any dimensional discrepancies of the piece.
15 Citations
23 Claims
-
1. A method for producing a profiled bead made of a plastic on a piece, comprising:
-
positioning a flexible mold including a forming face and a flexible support on a support frame, wherein the forming face is supported by the flexible support which has a shape that can vary under pressure of a fluid; fixing the piece with respect to the support frame via rests positioned beneath the piece such that the forming face is not pressed against the piece when the flexible support is not inflated by the fluid; positioning a mating mold on the support frame such that the mating mold is in contact with the support frame and the forming face is not pressed against the mating mold when the flexible support is not inflated by the fluid; after the fixing the piece and the positioning the mating mold, inflating the flexible support with the fluid such that the forming face moves from a position not pressed against the mating mold or the piece to a position in contact with at least a partial portion of an edge region or lateral face region of a surface of the piece and the mating mold to form a cavity in which the plastic is deposited without the mating mold contacting the piece; and depositing, in the cavity, the plastic to be stuck to at least part of a periphery of the surface of the piece not covered by the forming face and defining external dimensions of the profiled bead by the forming face and the mating mold. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11)
-
-
4. The method as claimed in 1, wherein the forming face is used to form and to support a flexible lip of the finished profiled bead, extending freely from the piece.
-
12. A device for producing a profiled bead in a plastic on a piece, comprising:
-
a support frame; a flexible mold including a forming face supported by a flexible support which has a shape that can vary under pressure of a fluid such that, when the flexible support does not have the fluid therein, the forming face is not positioned in contact with the piece and, when the flexible support does have the fluid therein, the forming face is positioned in contact with the piece, wherein the flexible mold is positioned on the support frame; means for fixing the piece with respect to the support frame; a mating mold positioned on the support frame such that, when the flexible support does not have the fluid therein, the forming face is not positioned in contact with the mating mold or the piece and, when the flexible support does have the fluid therein, the forming face is positioned in contact with the mating mold and the piece to form a cavity in which the plastic is deposited; and means for depositing in the cavity the plastic on at least part of a periphery of the piece, in which external dimensions of the formed profiled bead, sticking to a surface of the piece, are defined also by the forming face and the mating mold, wherein the forming face is configured to be pressed against the fixed piece and the mating mold in a direction of extension of the profiled bead that is to be fashioned on the forming face without the mating mold contacting the piece. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A device for producing a profiled bead of plastic on a piece, comprising:
-
a support frame; a flexible mold including a forming face supported by a flexible support which has a shape that can vary under pressure of a fluid such that, when the flexible support does not have the fluid therein, the forming face is not positioned in contact with the piece and, when the flexible support does have the fluid therein, the forming face is positioned in contact with the piece, wherein the flexible mold is positioned on the support frame; a support unit to fix the piece with respect to the support frame; a mating mold positioned on the support frame such that, when the flexible support does not have the fluid therein, the forming face is not positioned in contact with the mating mold or the piece and, when the flexible support does have the fluid therein, the forming face is positioned in contact with the mating mold and the piece to form a cavity in which the plastic is deposited; and an extrusion nozzle to deposit in the cavity the plastic on at least part of a periphery of the piece, wherein external dimensions of the formed profiled bead sticking to a surface of the piece are also defined by the forming face and the mating mold, wherein the forming face is configured to be pressed against the fixed piece and the mating mold in a direction of extension of the profiled bead that is to be fashioned on the forming face without the mating mold contacting the piece. - View Dependent Claims (23)
-
Specification