EP1099499B1 - Procédé d'alimentation pour le moulage d'une pièce avec insert - Google Patents
Procédé d'alimentation pour le moulage d'une pièce avec insert Download PDFInfo
- Publication number
- EP1099499B1 EP1099499B1 EP00420232A EP00420232A EP1099499B1 EP 1099499 B1 EP1099499 B1 EP 1099499B1 EP 00420232 A EP00420232 A EP 00420232A EP 00420232 A EP00420232 A EP 00420232A EP 1099499 B1 EP1099499 B1 EP 1099499B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- support
- openings
- mold
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
Definitions
- the present invention relates to the field of foundry in metal molds, for the production of parts, in particular of metals or light alloys, with placement of one or more inserts in the piece, during the molding operation. More particularly, this invention has for object a process for feeding molten metal or alloy, for molding of such a piece with insert.
- the foundry of light alloys consists of producing pieces of precise dimension, from a metallic material that is first put into fusion, then introduced into a metal mold inside which it is solidifies, taking the shape imposed by the cavity of the mold.
- the form solid thus obtained is extracted from the mold, and the following operation in the separation of the feeding system ("carrot" molding) from the room.
- the part obtained then undergoes finishing operations and finishing, before assembly or use.
- insert 2 can constitute a more or less important obstacle, which must be circumvented by the molten metal or alloy, which thus disrupts the flow of molten material, when filling the mold, the areas where the flow is upset are indicated in 3. This causes defects in part 1, in the areas 4 opposed to the feeding of the mold, indicated in 5. Such defects may not be acceptable, particularly in the case of a coin 1 having a safety function, for example in the automotive field.
- the present invention therefore aims to reduce or even to eliminate these disadvantages, due to the presence of an insert, and to allow thus obtaining pieces with insert by eliminating the negative effects of the presence of the insert on the flow of the material during the filling of the mold.
- the subject of the invention is a feeding method for the molding of a part with insert, of the type specified in the introduction, which essentially consists, when filling the mold, of passing the molten material to be molded through the insert and possibly its support through openings in the insert and, where appropriate, in its support, and creating at least one transverse channel to said insert and able to be traveled by a stream of melt to mold.
- the openings are provided in opposite areas of the insert, so as to create, through the insert, a flow of material between the side of mold feeding and the opposite side to this feed.
- an insert in the form of a sleeve or a ring two diametrically opposed orifices are formed in this sleeve.
- the inventive idea is to create an insert of orifices, suitably arranged on the insert and suitably oriented when placing the insert in the mold, these orifices (combined possibly with orifices formed in the support of the insert) allowing the molten metal or alloy to pass through this insert, to come fill the mold area opposite the feed.
- these orifices combined possibly with orifices formed in the support of the insert
- the solidified material corresponding to the channel passing through the insert can be eliminated during operations carried out after extraction of the solid piece out of the mold.
- the orifices formed in the insert, and finally filled by the solidified molding material allow effective mechanical fastening of the insert on the molded part.
- the feeding method object of the invention, promotes mold filling and contributes to the quality of a piece molded with insert, avoiding areas of defects, whatever the principle of the mold and the feeding side of this mold. So the process according to the invention is compatible with molds and injection molding machines with vertical closure and vertical injection, or with horizontal closure and vertical injection, or with horizontal closure and injection horizontal. This method can be used also in the case of a molding by gravity (without pressure).
- the conformation and the number of the channels, created by the orifices of the insert and possibly of its support, can be adapted in depending on the part to be molded, as well as desired material flows.
- the part 1 to be produced comprising an insert 2 in the form of a sleeve or Ring.
- the insert 2 is positioned on a support 7, formed by raised portions of the fixed mold portion 6a and the mobile mold part 6b (see Figure 3).
- the insert 2 in the form of a sleeve, shown alone in FIG. 4, is feasible in a separate metal, and here it comprises two orifices 8 and 9 of oblong shape, arranged in diametrically opposed positions.
- the insert 2 is positioned in the mold 6, on its support 7, such that one of the orifices 8 is opposite the feed 5 of the mold 6.
- the other orifice 9 of the insert 2 is then placed facing the zone 4 opposite to the power supply 5.
- the support 7 of the insert 2 has a diametrical orifice 10, constituted by two grooves complementary parts, respectively, in the mold parts 6a and 6b (see Figure 3).
- the three orifices 8, 9 and 10, aligned, define a transverse channel 11 to the insert 2, more particularly a diametrical channel, which passes through this insert 2 from one side to the other.
- the molten material from feed 5 is subdivided into several streams, more particularly into two lateral flows flowing on either side of the insert 2, and a flow central flowing through the channel 11, so through the insert 2 and its 3.
- this triple flow and in particular the flow through the channel 11 favor the filling, in matter to be molded, Zone 4 opposite to food 5.
- the mold 6 is opened by away from its fixed parts 6a and mobile 6b.
- the portion of matter solidified, corresponding to channel 11, can then be removed leaving in place the material occupying the two orifices 8 and 9 of the insert 2, in order to ensure mechanical attachment of this insert 2 to the remainder from room 1.
- Figures 5 and 6 illustrate a concrete example of part 1 achievable by the method described above.
- Piece 1 is here a pivot wheel, for a motor vehicle, made of aluminum and provided with a insert 2 in the form of a sleeve or a ring, made of another metal, located in the region of the central hub of this wheel pivot.
- Figure 6 illustrates the molding process of such a part 1 with insert 2 which, except for the forms particulars of part 1, is carried out exactly according to the principle previously described, thanks to the two orifices 8 and 9 of the insert 2 and to the formation of the canal 11.
- Figures 7 and following illustrate some variants of this method, by way of non-limiting examples.
- the variants concern positions and shapes of the orifices of the insert 2, and of the orifices of the support 7 of the insert 2, these examples showing various possibilities orientation of molten metal streams inside the mold 6.
- the insert 2 in the form of a sleeve still has two opposite ports 8 and 9, but these are positioned laterally.
- the support 7 of the insert 2 it comprises two lateral grooves 10a and 10b, in correspondence with the positions of the openings 8 and 9 of the insert 2.
- the two side flows of molten material can thus be brought closer to the center of the mold 6, and to cross partially insert 2, to fill more directly zone 4 located at the opposite of the power supply 5.
- the channel 11 has a configuration in "Y” or flared (the orifices 8 and 9 being unequal), ensuring a better distributed distribution of the molten material in zone 4 opposed to food 5.
- the invention embraces all the embodiments and within the scope of the appended claims, whatever in particular: the nature of the material to be molded, the shape and the material of the insert, the number and distribution of the orifices of the insert, and the resulting configuration of the channel or channels transverse to this insert, the or the channels can be straight, cranked, "Y", cross, etc ...
- the method of the invention can be implemented by creating a channel only in this insert, without the need to spare one or holes in a support insert.
- this process is compatible with all principles of molding and casting, in particular under pressure or by gravity (without pressure).
- the method of the invention can apply to molded parts of all sizes, and all destinations, insofar as these parts include one or more inserts.
Description
- Le flux de matière fondue circule, de la manière la plus directe possible, vers la zone du moule opposée à l'alimentation.
- La solidification de cette matière est, elle aussi, dirigée.
- Le ou les canaux créés dans l'insert et/ou dans son support assurent une transmission éventuelle de la pression initiale en tout point de la cavité du moule, correspondant à la pièce à mouler.
Claims (4)
- Procédé d'alimentation en métal ou alliage fondu, pour le moulage de pièces notamment en métaux ou alliages légers, avec mise en place d'un ou plusieurs inserts dans la pièce, lors de l'opération de moulage, caractérisé en ce qu 'il consiste, lors du remplissage du moule (6), à faire passer la matière fondue à mouler à travers l'insert (2) et éventuellement son support (7), grâce à ces orifices (8, 9, 10) ménagés dans l'insert (2) et, le cas échéant, dans son support (7), et créant au moins un canal (11) transversal audit insert (2) et apte à être parcouru par un flux de matière fondue à mouler.
- Procédé selon la revendication 1, caractérisé en ce que, dans le cas d'un insert (2) de forme évidée, les orifices (8, 9) sont ménagés dans des zones opposées de l'insert (2), de manière à créer, au travers de l'insert (2), un flux de matière entre le côté de l'alimentation (5) du moule (6) et le côté (4) opposé à cette alimentation (5).
- Procédé selon la revendication 2, caractérisé en ce que l'insert (2), en forme de manchon ou de bague, comporte deux orifices (8, 9) ménagés dans des positions diamétralement opposées, cet insert (2) étant positionné dans le moule (6), sur son support (7), de telle sorte que l'un des orifices (8) se situe face à l'alimentation (5) du moule (6), l'autre orifice (9) étant alors placé face à la zone (4) opposée à l'alimentation (5), tandis que le support (7) de l'insert (2) comporte, entre les positions prises par les orifices précités (8, 9), un orifice diamétral (10) définissant, avec les orifices (8, 9) de l'insert (2), le canal (11) transversal à l'insert (2).
- Procédé selon la revendication 3, caractérisé en ce que l'orifice diamétral (10) du support (7) de l'insert (2) résulte de deux gorges complémentaires ménagées, respectivement, dans les parties fixe (6a) et mobile (6b) du moule (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9914397A FR2800655B1 (fr) | 1999-11-10 | 1999-11-10 | Procede d'alimentation pour le moulage d'une piece avec insert |
FR9914397 | 1999-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1099499A1 EP1099499A1 (fr) | 2001-05-16 |
EP1099499B1 true EP1099499B1 (fr) | 2003-06-25 |
Family
ID=9552174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00420232A Expired - Lifetime EP1099499B1 (fr) | 1999-11-10 | 2000-11-10 | Procédé d'alimentation pour le moulage d'une pièce avec insert |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1099499B1 (fr) |
AT (1) | ATE243592T1 (fr) |
DE (1) | DE60003507T2 (fr) |
ES (1) | ES2202025T3 (fr) |
FR (1) | FR2800655B1 (fr) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2971495B2 (ja) * | 1990-01-25 | 1999-11-08 | 旭テック株式会社 | アルミニウム合金鋳物製品 |
DE19703399A1 (de) * | 1997-01-30 | 1998-08-06 | Itt Mfg Enterprises Inc | Verfahren zur Herstellung eines Gehäuseblocks für ein Hydraulikaggregat |
-
1999
- 1999-11-10 FR FR9914397A patent/FR2800655B1/fr not_active Expired - Fee Related
-
2000
- 2000-11-10 DE DE60003507T patent/DE60003507T2/de not_active Expired - Fee Related
- 2000-11-10 EP EP00420232A patent/EP1099499B1/fr not_active Expired - Lifetime
- 2000-11-10 ES ES00420232T patent/ES2202025T3/es not_active Expired - Lifetime
- 2000-11-10 AT AT00420232T patent/ATE243592T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2800655A1 (fr) | 2001-05-11 |
ES2202025T3 (es) | 2004-04-01 |
FR2800655B1 (fr) | 2001-12-14 |
EP1099499A1 (fr) | 2001-05-16 |
DE60003507D1 (de) | 2003-07-31 |
DE60003507T2 (de) | 2004-04-29 |
ATE243592T1 (de) | 2003-07-15 |
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