BRPI0812173B1 - HYBRID PART, MOLDED AND MANUFACTURING PROCESS OF THIS PART - Google Patents

Abstract

hybrid part, molded and part manufacturing process. The present invention relates to the hybrid part comprising a metal body (14a, 148) and a plastic body (16) partially covering the metal body (14a, 148). the metal body (14a, 148) comprises first and second opposing surfaces (18a 1, 18a2, 1881, 1882). first and second opposing surfaces (18a1, 18a2,1881, 1882) respectively comprise first and second zones released (22a 1, 22a2, 2281, 2282) of plastics material having at least one burnished zone (26a, 268). In the course of the workmanship process, the zones 22a1, 22a2, 2281, 2282 of the metal body 14a, 148 are intended to be released from plastic between a first and a second clamping surface 32a. , 32a2, 3281, 3282) and the zones (22a 1, 22a2, 2281, 2282) contained between the clamping surfaces (32a1, 32a2, 3281, 3282) are joined when closing the mold ( 10).

Description

Descriptive Report of the Invention Patent for HYBRID, MOLDED PIECE AND MANUFACTURING PROCESS OF THIS PART.

[001] The present invention relates to a manufacturing process of a hybrid part.

[002] It applies, in particular, but not exclusively, to the field of the automobile.

[003] It is known, notably from US 2005/0127564, a process that makes it possible to manufacture a hybrid piece comprising a metallic body, usually in the form of a plate, and a plastic body that partially covers the metallic body. The metallic body comprises a first and a second opposite face connected by edges. The opposing surfaces comprise respectively a first and a second zone released from plastic.

[004] During the process described in US 2005/0127564, the metal body is placed in a mold, comprising a first and a second part displaceable in relation to each other between positions of opening and closing the mold. The two parts of the mold are configured to contain the edges of the metallic body and leave it free in its central part.

[005] During this process, the plastic material is injected in contact with one of the surfaces of the metallic body. It is contained in a molding space bounded, on the one hand, by the contained edges and, on the other hand, by this surface. Thus, under the effect of the pressure of the plastic material, the metallic body is formed against one of the parts of the mold.

[006] Now, the metallic body of the hybrid piece thus manufactured being covered, on one of its opposite surfaces, with plastic material, this hybrid piece does not allow to explore separately the advantages of metal and plastic material.

Petition 870180052192, of 06/18/2018, p. 7/33

2/18 [007] The purpose of the invention is to provide a manufacturing process for a hybrid part, allowing to exploit to the maximum the advantages of metal and plastic.

[008] For this purpose, the invention has for its object a manufacturing process of a hybrid part for a motor vehicle in a mold, the part comprising a metallic body and a plastic body that partially covers the metallic body, the metallic body comprising a first and second opposing surfaces, the first and second opposing surfaces comprising respectively the first and the second areas released from the plastics, the mold comprising a first and a second part displaceable with respect to each other between opening and closing positions of the mold, and between which the metallic body is installed, a process in which it contains the zones of the metallic body destined to be released of plastic material between a first and a second clamping surfaces supported by the first and the second parts of the mold, characterized by the fact that the areas contained between the clamping surfaces of the mold are printed, which closing the mold.

[009] Indeed, when making a hybrid part, it is sought to explore the different advantages of plastic and metal over the parts of the hybrid part for which the use of plastic and metal is advantageous. Thus, metal is generally chosen for relatively larger parts of the piece that do not require complex forming, the larger metal parts being, moreover, cheaper than the larger plastic parts. On the contrary, the plastic material is generally chosen for parts of the hybrid piece that presents complex shapes, the plastic material being easier to form by molding than the metal by stamping.

Petition 870180052192, of 06/18/2018, p. 8/33

3/18 [0010] The process, according to the invention, allows, in the middle of the same mold, to burnish the metallic body and to mold the plastic material body. Thus, you benefit from the advantages of metal and plastic for parts of the hybrid part for which the use of metal or plastic is advantageous. Indeed, it is possible to manufacture a hybrid piece that comprises, on the one hand, a relatively large metallic body, released from plastic material in the areas released and stamped by the clamping surfaces, and, on the other hand, a plastic body molded on the metallic body, outside the areas released from plastics, and presenting complex shapes, allowing, for example, to fix the hybrid part in a vehicle gearbox.

[0011] Furthermore, the process, according to the invention, is particularly advantageous in the case where, for purposes of stamping the metal body, no previous complex operations are carried out, different from the unwinding and cutting operations of the sheet which is usually packaged in the form of a sheet coil.

[0012] In addition, before placing the metallic body in the mold, it is cut, according to a desired shape. The closer the shape of the stamped metallic body is to that of the unrolled unrolled body, the more the loss of matter linked to the cut of the metallic body will be minimized.

[0013] Advantageously, the metallic body having an edge that connects the cohesive surfaces of the opposite surfaces, the edge and the cohesion surfaces being intended to be overmolded by the body in plastic, the edge and the cohesion surfaces are positioned in a plastic molding space.

[0014] You can then easily connect the metallic body and the plastic body. In effect, positioning the edge and the surfaces of the surface of the surface. 9/33

4/18 of cohesion in the space for molding the body in plastic, cover the edge and the cohesion surfaces by connecting the edge of the metallic body with the plastic.

[0015] Advantageously, the edge and the cohesion surfaces are positioned, displacing the cohesion surfaces in relation to the areas destined to be released of plastic material, preferably when the first and second parts of the mold are in position for closing the mold, in which the areas destined to be released from the plastic matter are contained between the clamping surfaces. [0016] According to an embodiment of the process, according to the invention, the edge is folded in relation to the areas intended to be contained between the clamping surfaces, preferably before the mold is closed.

[0017] By folding the front edge of the mold closure, you can then more accurately and easily position the metal body between the two parts of the mold. In effect, the folded edge forms a reference edge that allows the metal body to be positioned in relation to the part of the mold on which it is arranged.

[0018] In addition, in certain mold configurations, when closing the mold, it is avoided that one of the parts of the mold comes into contact with the metallic body and does not move it.

[0019] Optionally, the metal body is fixed on one of the clamping surfaces.

[0020] This immobilizes the metallic body that cannot move in relation to the clamping surface on which it is fixed during the closing of the mold.

[0021] According to another embodiment of the process, according to the invention, the metallic body is separated into at least two secondary metallic bodies, moving the first and second parts of the mold towards the closing position of the mold.

Petition 870180052192, of 06/18/2018, p. 10/33

5/18 [0022] In this embodiment, the closing of the mold is used to separate the metallic body, for example, by tearing or cutting the metallic body.

[0023] The invention also has as its object a mold for the manufacture of a hybrid part for a motor vehicle, the part comprising a metallic body and a plastic body partially covering the metallic body, the metallic body comprising a first and a second opposing surfaces, the first and second opposing surfaces comprising respectively the first and the second areas released from the plastics, the mold comprising a first and a second part between which the metallic body is intended to be placed, displaceable in relation to each other between the opening and closing positions of the mold, the first and second parts comprising respectively a first and a second clamping surface, intended to come into contact with the first and the second surfaces of the metallic body, characterized by the fact that at least one of the first or second clamping surfaces include stamping means of released zones.

[0024] The mold, according to the invention, allows the metal body to be embedded and the plastic body to be molded in the same mold. To manufacture a hybrid part, it is then no longer necessary to use a stamping tool for the metal body and a molding tool for the body in plastic.

[0025] According to an optional characteristic of the mold, according to the invention, the mold comprises means of positioning an edge of the metallic body in a molding space of the plastic material.

[0026] The positioning means allow to maintain and, if necessary, move the edge of the metallic body in the molding space

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6/18 once the mold is in the closed position.

[0027] In addition, these positioning means allow to center the edge in the molding space. In this way, the positioning means prevent the edge or one of the opposite surfaces of the metallic body from being in contact with the mold and thus do not prevent the plastics from covering the edge and / or one of the opposite surfaces.

[0028] Advantageously, the means of positioning the edge of the metallic body are movable between:

- a stowed position, in which the positioning means are not in contact with the metallic body; and

- a request position for the metallic body in the molding space, in which the positioning means are in contact with the metallic body.

[0029] These means of positioning allow to improve the appearance of the body in plastic. In fact, when the plastic material is injected, the edge of the metal body is positioned and maintained in the molding space, thanks to the positioning means in the request position. After this injection stage, the positioning means can be moved in a retracted position, so as not to leave an impression on the plastic body.

[0030] Furthermore, the means being mobile, they allow, if necessary, to bend the edge of the metallic body in relation to the released zones destined to be contained between the clamping surfaces.

[0031] Advantageously, at least the first and second clamping surfaces comprise a coating or are treated on the surface, the coating or the surface treatment being preferably of the type with little friction.

[0032] The coating or the hydrotreating of the surface allows to favor the sliding of the metallic body in relation to the surfaces

Petition 870180052192, of 06/18/2018, p. 12/33

7/18 of the mold. In effect, there is a slip when the mold closes between the released parts of plastic material and the clamping surfaces. In certain cases, there is also a slip between the parts intended to be molded by the plastic material and the molding surfaces of the body in plastic material.

[0033] Optionally, the mold comprises means for fixing the metal body able to fix the metal body on one of the clamping surfaces, preferably magnetic means.

[0034] These means allow to ensure that the metallic body cannot move when closing the mold in relation to the clamping surface on which it is fixed. These fixing means can be pneumatic, mechanical and, preferably, magnetic. [0035] In effect, these allow a fixation of the metallic body in the mold without leaving an impression on the plastic body, as mechanical means would eventually do. In addition, the magnetic means can be easily synchronized with the displacements of the mold parts.

[0036] The invention also has as its object a hybrid part for a motor vehicle manufactured by a process, as defined above, characterized by the fact that the first and second areas released from matter comprise at least one stamped area.

[0037] Thanks to the process, according to the invention, it is possible to choose the best material, plastic or metallic, depending on the characteristics that the different parts of the piece must present. Thus, for example, the metal body will form a part of the part which must have high elastic mechanical properties, while the plastic body will more advantageously form a part of the part which must have mechanical properties of resistance to deformation.

[0038] In addition, this hybrid piece has good properties

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8/18 acoustic. In fact, the hybrid part is generally subjected to vehicle vibrations. In certain cases, notably in the case of low frequency vibrations, the metallic body resonates with these vibrations and produces an acoustic annoyance for the vehicle's occupants. The plastic body allows to absorb vibrations, but also to delay the resonance frequencies of the metallic body, so that the acoustic annoyance is suppressed. In other cases, notably in the case of high frequency vibrations, the metallic body absorbs these vibrations. The absorption of these vibrations will be all the more important the more the metallic body has large dimensions.

[0039] Advantageously, the metallic body is overmolded by the plastic body on one edge and on cohesion surfaces linked together by that edge, the plastic body interrupting itself in the first and second released zones.

[0040] The plastic body then contains the metallic body, like tweezers. In this way, a good cohesion between the metallic body and the plastic body is ensured.

[0041] Advantageously, the plastic body covers the entire edge that surrounds the metallic body.

[0042] In this piece, each first and second surfaces of cohesion, covered by the body in plastic material, involve respectively each first and second surfaces released from plastic material. The cohesion between the metallic body and the plastic body of this hybrid piece is, therefore, excellent.

[0043] Thus, the hybrid part comprises at least one part that comprises, in its thickness, only plastic material. The hybrid part also comprises at least a part that comprises, in its thickness, only metal and at least a part that comprises, in its thickness, the plastic material that covers the

Petition 870180052192, of 06/18/2018, p. 14/33

9/18 metallic body on its two opposite surfaces.

[0044] Optionally, the edge is folded in relation to the first and second areas released from plastic.

[0045] Advantageously, the metallic body comprises holes that connect the opposite surfaces.

[0046] The cohesion holes allow for better mechanical cohesion between the plastic body and the metallic body and the deformation of the plastic material on both sides of the holes.

[0047] In addition, the holes facilitate, if necessary, the folding, stamping and tearing of the metallic body, when they are arranged respectively along the folding, stamping and tearing lines. In this case, the holes generally have a general form of crack.

[0048] According to another characteristic of the hybrid part, according to the invention, the opposite surfaces of the metallic body have a coating or are treated on the surface.

[0049] This coating or surface treatment allows, when it is of the anti-corrosion type, for example, in the case of a coating deposited by cataphoresis or by galvanization to protect the metallic body against corrosion.

[0050] On the other hand, depending on the nature of the coating or the surface treatment, it can form a physical-chemical interface with the plastic body, which improves the cohesion between the metallic body and the plastic body.

[0051] Another object of the invention is a set of a first and a second hybrid parts, as defined below, each comprising a first and a second metallic body, characterized by the fact that the metallic bodies are attached to each other by common plastic body.

[0052] The invention also has as its object a wheel reservoir

Petition 870180052192, of 06/18/2018, p. 15/33

10/18 auxiliary for motor vehicle, characterized by the fact that it comprises a hybrid part, as defined above or a set as defined above.

[0053] The invention, in short, has as its object a floor for a motor vehicle, characterized by the fact that it comprises a hybrid part, as defined above or a set as defined above.

[0054] The invention will be better understood by reading the description that will be made below, given only as a non-limiting example and made with reference to the drawings, in which:

figure 1 represents a top view of an auxiliary wheel reservoir, comprising an assembly, according to the invention, comprising two hybrid parts, according to a first and a second embodiment of the invention;

figure 2 represents a sectional view of a mold for the manufacture of the reservoir of figure 1, according to a first embodiment of the invention in an open position;

figure 3 represents a sectional view of the mold of figure 2 in a closed position;

figure 4 represents an enlargement of zone IV of figure 3;

figure 5 represents a cross-sectional view of a car floor, comprising a hybrid part, according to a third embodiment of the invention;

figure 6 represents a sectional view of a mold, according to a second embodiment of the invention in an open position;

figure 7 represents a sectional view of the mold of figure 6 in a closed position.

[0055] In figures 2 to 4, a mold 10 for the manufacture of the reservoir 12 of figure 1 was represented. In these figures 2 to 4, reprePetition 870180052192, of 06/18/2018, p. 16/33

11/18 sat X, Y, Z axes orthogonal to each other corresponding to the axes of reservoir 12, as illustrated in figure 1.

[0056] With reference to figure 1, the auxiliary wheel reservoir 12 comprises a first and a second hybrid parts 12A and 12B, each comprising, respectively, a first and a second metallic body 14A, 14B attached to each other by a body common in plastics 16 that partially covers each of the metallic bodies 14A and 14B.

[0057] The metallic body 14A has a general disk shape and the metallic body 14B has a general plate shape which has a convex side 15 in a circular arc, that convex side 15 according to a contour part of the metallic body 14A.

[0058] As shown in figures 1 and 3, figure 3 in which the assembly 12 is represented in the mold, the common body 16 comprises two peripheral parts 16A and 16B respectively adjacent to the first and the second metallic body 14A and 14B. The common body 16 also comprises two detachments 16C and 16D connecting, respectively, the part 16A and the metallic body 14A, on the one hand, and the metallic bodies 14A, 14B on the other hand.

[0059] The first metallic body 14A thus lagged, according to the Z direction in relation to the metallic body 14B and the plastic parts 16A, 16B can receive an auxiliary wheel for motor vehicle (not shown). The reservoir 12 is attached to the vehicle body by means of fixations 17, in the form of through holes for screws.

[0060] As shown in figure 2, each metallic body 14A, 14B comprises a first and a second opposing surface 18A1, 18A2, 18B1, 18B2 respectively. Surfaces 18A1 and 18B1 are also visible in Figure 1. These surfaces 18A1, 18B1 are linked together by an edge respectively designated by

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12/18 reference 20A and 20B involving the corresponding metallic body 14A, 14B.

[0061] With reference to figure 3, each opposite surface 18A1, 18A2, 18B1, 18B2 comprises, on the one hand, areas released from plastic material respectively referenced 22A1, 22A2, 22B1, 22B2 and cohesion surfaces covered by the common body 16 and respectively referenced with 24A1, 24A2, 24B1, 24B2.

[0062] Thus and as shown in figures 1, 3 and 4, each metallic body 14A, 14B is overmolded of plastic material on a part of cohesion P formed by the edge 20A, 20B and on the cohesion surfaces 24A1, 24A2, 24B1 , 24B2. Common body 16 is interrupted in the first and second released zones 22A1, 22A2, 22B1, 22B2.

[0063] As shown in figure 4, each edge 20A, 20B is folded in relation to the first and second released zones 22A1, 22A2, 22B1, 22B2.

[0064] In addition, each metallic body 14A, 14B comprises, on the first and second released zones 22A1, 22A2, 22B1, 22B2, embedded zones respectively referenced with 26A, 26B.

[0065] In figures 2 to 4, the mold 10 for the manufacture of the set 12 has been represented according to a first embodiment of the invention.

[0066] This mold 10 comprises a first and a second part 28, 30 displaceable with respect to each other between opening (figure 2) and closing (figure 3) positions.

[0067] With reference to figure 2, each part 28, 30 comprises respectively a first and a second clamping surfaces 32A1, 32A2, 32B1, 32B2 intended to come into contact with the surfaces 18A1, 18A2, 18B1, 18B2 of the corresponding metallic body . In addition, each part 28, 30 contains a priPetition 870180052192, of 06/18/2018, p. 18/33

13/18 and a second molding surface 36, 38 of the common body 16 in plastic.

[0068] As shown in figure 3, in the mold closing position, the molding surfaces, 36, 38 define a molding space E of the common body 16.

[0069] Each part 28, 30 comprises means for positioning 40 of each edge 20A, 20B in the molding space E. In the species and as shown in figures 2 to 4, the means 40 comprise movable pistons 42 able to slide in a housing 44 The means 40 are disposed per pair, each pair comprising a first means disposed in the first part 28 and a corresponding second means disposed in the second part 30, generally facing the first means.

[0070] As shown in figure 2, the pistons 42 are in a stowed position in the housing 44. In that position, the pistons 42 do not penetrate the molding space E and are not in contact with the metallic bodies 14A, 14B. As shown in figures 3 and 4, the pistons 42 are in a position to request the metallic body 14A, 14B. In this position, the pistons 42 are in contact with each corresponding metallic body 14A, 14B, notably with the cohesive surfaces 24A1, 24A2.

[0071] As shown in figures 2 to 4, each piston 42 of the same pair slides along an axis C common to the two pistons of the same pair. This C axis is substantially perpendicular to the molding surfaces 36, 38 so that the request for the corresponding metallic body 14A, 14B is optimal. In these same figures, thanks to positioning means 40, each metallic body 14a, 14B is centered in the molding space E.

[0072] Each clamping surface 32, 34 includes embossing means 46A and 46B, allowing the formed zones 22A1,22A2 and 22B1,22B2 to be formed respectively.

Petition 870180052192, of 06/18/2018, p. 19/33

14/18 [0073] With reference to figure 2, the stamping means 46A comprise, on the one hand, staggered spans 48 in a star shape around a circular hole 50 arranged on the surface 32 and, on the other hand, staggered intervals 52 in a star shape around a cylindrical cable 54 opened in figure 34. The spans 48 and the orifice 50 have a complementary shape of the gaps 52 and the cable 54, in order to stamp the metal body 14A and give it the desired shape. [0074] The embossing means 46B comprises, on the one hand, an open gap 56 on the surface 32 and, on the other hand, an open gap 58 on the surface 34. The gap 56 and the gap 58 extend in the Y direction. Analogously to means 46A, the gap 56 has a complementary shape to the gap 58.

[0075] The mold 10 allows to manufacture the set 12 of hybrid parts 12A, 12B, according to the process, according to a first embodiment of the invention, of which the main aspects related to the invention will be needed below.

[0076] When the mold 10 is in the open position, each metallic body 14A, 14B is placed between the two parts 28, 30. In the species, the body 14A is fixed on the surface 32A1 and the body 14B on the surface 32B2, thanks to fixing means 60A, 60B arranged in parts 28 and 30 of the mold 10. In the example illustrated in figures 2 and 3, these means 60A, 60B comprise magnetic means, for example, a controlled magnet.

[0077] As shown in figure 2, before closing the mold, the edges 20A and 20B are folded to form the undocking 16D in relation to zones 22A1, 22A2, 22B1, 22B2 intended to be contained between the clamping surfaces 32A1 , 32A2, 32B1, 32B2. In this way, it is avoided that these two edges 20A and 20B come into contact with each other, when closing the mold. The bending step can be performed manually by

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15/18 an operator, but also with the aid of automatic means, for example, an articulated robot. When performed by automatic means, this folding step allows the edges 20A and 20B to be reproducibly positioned in the E molding space.

[0078] Then, the mold 10 is closed, bringing the parts 28 and 30 together.

[0079] When closing the mold 10, the edges 20A and 20B, as well as the cohesive surfaces 24A1, 24A2, 24B1, 24B2 come into contact respectively with the molding surfaces 36 and 38. In order to allow the edges to slip 20A, 20B and the surfaces 24A1, 24A2, 24B1, 24B2 on the molding surfaces 36, 38, the mold comprises, on the molding surfaces 36, 38, a Teflon coating. As a variant, the molding surfaces 36, 38 are treated on the surface. This sliding is favored by a coating or, as a variant, a hydrotreating of the surfaces 18A1, 18A2, 18B1, 18B2 of each body 14A, 14B. In the species, each body 14A, 14B comprises a calendered film.

[0080] When closing the mold, zones 22A1, 22A2, 22B1, 22B2 are contained between the clamping surfaces 32A1, 32A2, 32B1, 32B2. In order to facilitate the sliding of the metallic bodies 14A, 14B in relation to the clamping surfaces 32A1, 32A2, 32B1, 32B2, when stamping, the clamping surfaces also have a Teflon coating.

[0081] Then, the edges 20A1, 20A2, 20B1, 20B2 and the cohesive surfaces 24A1, 24A2, 24B1, 24B2 are positioned in the molding space E with the aid of the means 40. To do this, then move the pistons 42 from their retracted position to their request position. The pistons 42 then request the metallic bodies 14A, 14B, in order to center them in the molding space E.

[0082] Then in the species, the plastic material is injected in the space

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16/18 molding E. The plastic material can be notably a thermoplastic polymer, possibly reinforced, such as polypropylene or polyamide. The plastic material can also come from a thermosetting resin, type AMC or BMC (respective acronyms for the English expressions Advanced Molding Compound and Bulk Molding Compound). When the plastic material hardens, either by heating, in the case of a thermosetting resin, or by cooling, in the case of a thermoplastic polymer, the edges 20A, 20B are maintained with the pistons 42. This prevents that, under the effect of injection pressure, the edges 20A, 20B and / or the cohesion surfaces 24A1, 24A2, 24B1, 24B2 are placed against one or the other of the molding surfaces 36, 38.

[0083] After the mold has cooled, pistons 42 are retracted, in order to be able to eject the set 12. As a variant, pistons 42 are retracted, before the plastic material completely hardens, which allows to avoid leaving an impression on the common body 16 in plastic.

[0084] In figure 5, a floor 62 for a vehicle was represented, comprising a hybrid part, according to a third embodiment. In this figure and in those that follow, the elements analogous to those represented in the previous figures are designated by identical references.

[0085] The metallic body 14A comprises the holes 64A, 64B opened on the embossing lines 65A, 65B. Each hole has a general slit shape so that the stamping lines 65A, 65B form stippled outlines of the stamped parts 66A, 66B.

[0086] Cohesion part P also includes cohesion holes 66. The plastic body 16 extends through holes 66 and connects the cohesion surfaces 24A1,24A2, 24B1,24B2 between them.

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17/18 [0087] A mold according to a second embodiment of the invention has been shown in figures 6 and 7.

[0088] In this embodiment, part 28 comprises two bowls 68A, 68B arranged on both sides of a gap 69. Part 30, complementary to part 28, comprises two intervals 70A, 70B and a bowl 71. The mold 10 it comprises, with the difference of the first embodiment, cutout means 72. In the species, cutout means 72 comprise a cutting edge 73.

[0089] As shown in figure 6, the metallic bodies 14A and 14B are connected together by a metallic body 14C, to form the metallic body 14. In the species, the metallic body 14C is connected to each metallic body 14A and 14B by a tightening zone 74A, 74B. As a variant, the metallic body 14 can comprise holes that have a general shape of crack, delimiting the part 14C of the parts 14A and 14B, according to a dotted outline that forms a shattering line of the metallic body.

[0090] The mold 10, according to the second embodiment of the invention, allows to apply a process, according to a second embodiment of the invention, of which the particulars will be specified below.

[0091] When closing the mold 10, the magnetic fixing means 60A, 60B, while maintaining the metallic bodies 14A, 14B, respectively, the gap 69 exerts a force on the metallic body 14C. The metallic body is then separated into three secondary metallic bodies 14A, 14B, 14C, shattering the clamping areas 74A, 74B.

[0092] In addition, the metal body 14B is cut with the aid of the cutting means 72.

[0093] When the plastic material is injected, the body 14C is preferably maintained by means of positioning 40. The body 14C allows the body 16 to be reinforced locally in plastic material.

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18/18 [0094] The invention is not limited to the previously described embodiments.

[0095] Indeed, you can also perform compression molding.

Claims (12)

1. Process of manufacturing a hybrid part (12) for a car in a mold (10), the hybrid part (12) comprises a first and a second hybrid part (12A and 12B), each containing, respectively, one first and a second metallic body (14A, 14B) attached to each other by a common plastic body (16) partially covering each of the metallic bodies (14A, 14B), each metallic body (14A, 14B) comprises a first and a second opposing surfaces (18A1, 18A2, 18B1, 18B2), the first and second opposing surfaces (18A1, 18A2, 18B1, 18B2) comprising respectively the first and second released zones (22A1, 22A2, 22B1, 22B2) of the plastics material , the mold (10) comprising a first and a second part (28, 30) displaceable with respect to each other between positions of opening and closing the mold (10), and between which the metallic bodies (14A, 14B) are placed, process in which the zones (22A1, 22A2, 22B 1, 22B2) of the metallic bodies (14A, 14B) intended to be released of plastic material between a first and a second clamping surfaces (32A1, 32A2, 32B1, 32B2) supported respectively by the first and the second parts (28, 30) the mold (10), and the materials for making the part are introduced into the mold; characterized by the fact that the zones (22A1, 22A2, 22B1, 22B2) are stamped between the clamping surfaces (32A1, 32A2, 32B1, 32B2) of the mold (10), when the mold is closed (10), metallic body (14A, 14B) has an edge (20A, 20B) that connects cohesion surfaces between them (24A1, 24A2, Petition 870180154608, of 11/23/2018, p. 6/12 2/4 24B1, 24B2) of the opposite surfaces, the edge (20A, 20B) and the cohesion surfaces (24A1, 24A2, 24B1, 24B2) being intended to be overmoulded by the plastic body (16), and the edge ( 20A, 20B) and the cohesion surfaces (24A1, 24A2, 24B1, 24B2) in a molding space (E) of the plastic material. 2. Process, according to claim 1, characterized by the fact that the edge (20A, 20B) is folded in relation to the zones (22A1, 22A2, 22B1, 22B2) intended to be contained between the clamping surfaces (32A1, 32A2, 32B1, 32B2), preferably before closing the mold (10). Process according to any one of the preceding claims, characterized by the fact that the metallic body (14A, 14B) is fixed on one of the clamping surfaces (32A1, 32A2, 32B1, 32B2). 4. Process according to any one of the preceding claims, characterized by the fact that the metallic body (14) is separated into at least two secondary metallic bodies (14A, 14B, 14C), the first and second parts being displaced (28, 30) from the mold (10) to the closed position of the mold (10). 5. Mold (10) for the manufacture of a hybrid part (12A, 12B) for a motor vehicle by a process as defined in claim 1, wherein the hybrid part (12) comprises a first and a second hybrid part (12A and 12B), each containing, respectively, a first and a second metallic body (14A, 14B) attached to each other by a common plastic body (16) that partially covers each of the metallic bodies (14A, 14B), the metallic body (14A, 14B) comprising a first and a second opposing surfaces (18A1, 18A2, 18B1, 18B2), the first and second opposing surfaces (18A1, 18A2, Petition 870180154608, of 11/23/2018, p. 7/12 3/4 18B1, 18B2) comprising first and second released zones (22A1, 22A2, 22B1, 22B2) of plastic, respectively, the mold (10) comprising a first and a second part (28, 30), including the metal bodies (14A , 14B) are intended to be placed, movable in relation to each other between mold opening and closing positions (10), the first and second parts (28, 30) comprising respectively a first and a second clamping surfaces ( 32A1, 32A2, 32B1, 32B2), designed to come into contact with the first and second surfaces (18A1, 18A2, 18B1, 18B2) of the metallic body (14A, 14B), characterized by the fact that at least one of the first or second clamping surfaces (32A1, 32A2, 32B1, 32B2) contain means for stamping the released zones (22A1, 22A2, 22B1, 22B2), the mold comprising means for positioning an edge (20A, 20B) of the metallic bodies (14A, 14B ) in a molding space (E) of plastic . 6. Mold (10), according to claim 5, characterized by the fact that the means for positioning (40) the edge (20A, 20B) of the metallic bodies (14A, 14B) are movable between: - a stowed position, in which the positioning means (40) are not in contact with the metallic body (14A, 14B); and - a request position for the metallic bodies (14A, 14B) in the molding space, in which the positioning means (40) are in contact with the metallic bodies (14A, 14B). Mold (10) according to either of Claims 5 or 6, characterized in that at least the first and second clamping surfaces (32A1, 32A2, 32B1, 32B2) have a coating or are treated on the surface , the coating or the surface treatment is preferably of the low friction type. Petition 870180154608, of 11/23/2018, p. 12/12 4/4 8. Mold (10) according to any one of claims 5 to 7, characterized in that it comprises fixing means (60A, 60B) of the metallic bodies (14A, 14B) capable of fixing the metallic body (14A, 14B) on one of the clamping surfaces (32A1, 32A2, 32B1,32B2), preferably magnetic means. Hybrid part (12) for a motor vehicle, manufactured by a process, as defined in any one of claims 1 to 4, the hybrid part (12) comprises a first and a second hybrid part (12A and 12B), containing, each, respectively a first and a second metallic body (14A, 14B) attached to each other by a common plastic body (16) that partially covers each of the metallic bodies (14A, 14B), characterized by the fact that the first and the second released zones (22A1, 22A2, 22B1, 22B2) of material comprise at least one stamped zone (26A, 26B), the metallic bodies (14A, 14B) are molded by the plastic body on one edge (20A, 20B ) and on cohesion surfaces (24A1, 24A2, 24B1, 24B2), connected by this edge (20A, 20B), the plastic body (16) interrupting itself in the first and second released zones (22A1, 22A2 , 22B1, 22B2). 10. Hybrid piece (12A, 12B), according to claim 9, characterized by the fact that the plastic body (16) covers the entire edge (20A, 20B) that surrounds the metal bodies (14A, 14B). 11. Hybrid part (12A, 12B) according to claim 9 or 10, characterized by the fact that the edge (20A, 20B) is folded in relation to the first and second released zones (22A1, 22A2, 22B1, 22B2 ) of plastics. Hybrid part (12A, 12B) according to any one of claims 9 to 11, characterized in that the metallic bodies (14A, 14B) comprise holes (64, 66) that connect the opposite surfaces (18A1, 18A2 , 18B1, 18B2).