Manufacturing Apparatus and Manufacturing Method for Metal-Resin Composite

Abstract

To prevent a resin material from flowing into a gap between a mold and an extrusion material, when a metal-resin composite is manufactured by integrating the resin material with the extrusion material by press molding.SOLUTION: A resin material 300 is integrated with an extrusion material 200 having wedge-shaped projections 231 and 232 provided in flexible pieces 202 and 203. A first mold 10 for forming a storage part 15 interfered with the extrusion material 300 in a design, and a mold 2 including a second mold 20 movable to the first mold 10 are prepared. The extrusion material 200 is stored in the storage part 15 in a state in which flexible pieces 202 and 203 are recessed to the inside of the storage part 15 by interference of the projections 231 and 232 with the storage part 15, and the resin material 300 is arranged on the first mold 10. The second mold 20 is moved in a mold closing direction M2, and thereby a cavity 40 which is defined by the surface of the extrusion material 200 and the mold 2 and is blocked from a gap 51 between the inner surface of the storage part 15 and the surface of the extrusion material 200 is formed, and the inside of the cavity 40 is filled with the resin material 300.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an apparatus and a method for manufacturing a metal resin composite.

Background Art

[0002] Regarding metal resin composites applied to structural parts such as vehicle frames, various structures and manufacturing methods have been proposed. For example, in the composite disclosed in Patent Document 1, a thermosetting carbon fiber reinforced resin (CFRP) is adhered to the surface of an aluminum extruded material with an adhesive. In the composite disclosed in Patent Document 2, the aluminum plate and CFRP are integrated by thermally pressing CFRP onto the aluminum plate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When applying the hot pressing exemplified in Patent Document 2 to the production of a composite including an aluminum extruded material, it is considered necessary to prepare a mold so as to form an appropriate gap between the mold and an aluminum extruded material virtually having a reference dimension, taking into account the tolerance of the aluminum extruded material. Thereby, every time a composite is manufactured, the aluminum extruded material that is formed within the tolerance can be properly installed in the mold. On the other hand, the aluminum extruded material is extruded hot as taught in Patent Document 1. Therefore, torsion and bending are likely to occur during extrusion, and it is difficult to improve the dimensional accuracy of the aluminum extruded material.

[0005] In view of the low dimensional accuracy of the aluminum extruded material, it is considered necessary to make the gap between the mold and the aluminum extruded material considerably larger than the gap between the mating surfaces of the mold. Then, during the hot pressing, the resin material inadvertently flows into the gap between the mold and the aluminum extruded material, thereby reducing the production efficiency of the composite. For example, when the resin material solidifies in the gap, the release resistance increases. After demolding, a complicated operation of peeling off the unnecessary resin material solidified in the gap occurs. In order to avoid a shortage of the resin material on the aluminum extruded material, it is necessary to fill an excessive amount of the resin material in anticipation of the amount to be peeled off.

[0006] An object of the present invention is to suppress the flow of a resin material into a gap between a mold and an extruded material when manufacturing a metal resin composite by press molding the resin material onto the extruded material.

Means for Solving the Problems

[0007] A first aspect of the present invention is a method for manufacturing a metal resin composite in which a resin material is integrally formed by press molding on a flexible piece and a metal extruded material having a wedge-shaped protrusion provided on an outer surface of the flexible piece, the method including: preparing a mold including a first mold forming a housing portion that interferes with the extruded material in design and a second mold movable with respect to the first mold; housing the extruded material in the housing portion with the flexible piece bent inward of the housing portion due to interference between the protrusion and the housing portion; disposing the resin material on the first mold; forming a cavity defined by a surface of the extruded material and the mold and blocked from a gap between an inner surface of the housing portion and the surface of the extruded material by moving the second mold in a mold closing direction; and pressurizing the resin material to fill the cavity.

[0008] According to the above configuration, when the extruded material is accommodated in the accommodation part, interference occurs between the wedge-shaped protrusion and the accommodation part, but the flexible piece of the extruded material bends inward of the accommodation part due to the wedge action. The wedge-shaped protrusion is pressed against the inner surface of the accommodation part by the reaction force caused by the elastic deformation of the flexible piece, whereby the gap between the surface of the extruded material and the inner surface of the accommodation part can be filled, and the cavity is blocked from this gap. Even if the resin material in the cavity tries to enter the gap, the intrusion is inhibited by the wedge-shaped protrusion. In this way, an undesired flow of the resin material into the gap can be suppressed.

[0009] A tapered surface may be provided on the lower surface side of the protrusion so as to incline closer to the outer surface of the flexible piece as it goes in the accommodation direction of the extruded material into the accommodation part.

[0010] According to the above configuration, when the tapered surface abuts against the entrance of the accommodation part during the accommodation of the extruded material, the flexible piece can be bent inward of the accommodation part by the wedge action. Therefore, even if the accommodation part is formed so that interference occurs in terms of design, the extruded material can be smoothly accommodated in the accommodation part.

[0011] The extruded material includes, in a cross section perpendicular to the longitudinal direction, a pair of opposing walls and two or more connecting walls connecting the pair of opposing walls, the flexible piece is constituted by the opposing walls, and the protrusion may be provided at an intermediate position between two adjacent connecting walls among the opposing walls.

[0012] According to the above configuration, it is possible to prevent the force generated on the flexible piece toward the inside of the accommodation part due to the interference between the accommodation part and the protrusion from being received by the connecting wall, and deformation of the flexible piece can be realized.

[0013] The mold is movable in the opening and closing direction with respect to the first mold, and further includes a third mold that forms the accommodation part together with the first mold. The protrusion protrudes in the opening and closing direction in the accommodation state, and in a state where the third mold has moved to the bottom dead center, the extruded material may be accommodated in the accommodation part in a state where the flexible piece bends inward of the accommodation part due to the interference between the protrusion and the accommodation part.

[0014] According to the above configuration, since the third mold that can move in the opening and closing direction also forms the accommodating portion, even if the cross-sectional shape of the extruded material is complicated, the installation of the extruded material in the mold and the demolding of the extruded material can be easily performed. In this case, when the third mold moves to the bottom dead center, the extruded material interferes with the accommodating portion in terms of design. Thereby, the flexible piece can be bent and the protrusion can be pressed against the inner surface of the accommodating portion, and the gap can be filled.

[0015] A second aspect of the present invention is a manufacturing apparatus for a metal-resin composite in which a resin material is integrally formed by press molding on an extruded material made of metal having a flexible piece and a wedge-shaped protrusion provided on an outer surface of the flexible piece, including a first mold forming an accommodating portion that interferes with the extruded material in terms of design, a mold including a second mold movable with respect to the first mold, and a moving mechanism for moving the second mold, the extruded material being accommodated in the accommodating portion in a state where the flexible piece is bent inward of the accommodating portion due to interference between the protrusion and the accommodating portion, and when the second mold moves by the moving mechanism in a state where the resin material is disposed on the first mold, a cavity defined by a surface of the extruded material and the mold and blocked from a gap between an inner surface of the accommodating portion and the surface of the extruded material is formed, and the resin material is pressurized and filled into the cavity, and a manufacturing apparatus for a metal-resin composite is provided.

Advantages of the Invention

[0016] According to the present invention, when manufacturing a metal-resin composite by press molding a resin material on an extruded material, the flow of the resin material into the gap between the mold and the extruded material can be suppressed.

Brief Description of the Drawings

[0017]

Figure 1A

Figure 1B

Figure 2A

Figure 2B

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0018] Embodiments of the present invention will be described with reference to the drawings. The same or corresponding elements are denoted by the same reference numerals throughout the drawings, and redundant explanations are omitted.

[0019] In the manufacturing apparatus 1 and the manufacturing method of the metal resin composite 100, the resin material 300 is integrated with the metal extruded material 200 by press molding using the mold 2 (see FIGS. 1A and 2A). The X direction in the drawings corresponds to the extrusion direction or the longitudinal direction of the extruded material 200. When simply referring to a "cross-section", it refers to a cross-section perpendicular to the X direction. The Y direction is a direction within the cross-section and corresponds to the width direction of the extruded material 200. The Z direction is perpendicular to the Y direction within the cross-section, corresponds to the height direction of the extruded material 200, and also corresponds to the opening and closing direction of the mold 2. Since the Z direction is oriented vertically on the paper surface in some of the drawings, hereinafter, for convenience of explanation, the Z direction is considered vertical and the XY direction is considered horizontal. The upper side (+Z direction) corresponds to the mold opening direction M1, and the lower side (-Z direction) corresponds to the mold closing direction M2. However, this is just an example, and the postures of the metal resin composite 100 and its components, as well as the manufacturing apparatus 1 and its components, can be changed as appropriate.

[0020] (First Embodiment) Referring to FIGS. 1A and 1B, the metal resin composite 100 according to the first embodiment includes a metal extruded material 200 and a resin material 300 provided on the extruded material 200. The metal resin composite 100 is suitably applied to structural parts, such as the body frame of an automobile, for example.

[0021] The metal material of the extrusion material 200 is not particularly limited. Light alloys such as aluminum alloys and magnesium alloys are suitable examples of metal materials, and contribute to achieving both light weight and high rigidity of structural parts. In the following, as a mere example, the extrusion material 200 is made of an aluminum alloy.

[0022] Although detailed illustration is omitted, the extrusion material 200 is obtained by heating and compressing a billet-shaped metal material in the main body of an extrusion molding machine, and extruding it from a die attached to the main body. After being extruded from the die, required processes such as cooling, drawing, and cutting are performed. The cross section of the extrusion material 200 is uniform in the longitudinal direction X because it is determined by the shape of the die. However, twists and bends occur due to hot forming. Each element of the extrusion material 200 extends in the longitudinal direction X, and is seamlessly integrated with one another.

[0023] The resin material 300 is obtained by press-molding a compound in a manufacturing apparatus 1 (see FIG. 2A and FIG. 2B). The compound may be a sheet-shaped SMC (Sheet Molding Compound) or a bulk-shaped BMC (Bulk Molding Compound). The SMC or BMC is realized by fiber-reinforced plastic (FRP) in which a matrix resin is impregnated with fibers. The matrix resin contains a thermosetting resin such as unsaturated polyester as a main component, and additives are mixed into the main component. The additives include, for example, a mold release agent. The fibers are, for example, glass fibers or carbon fibers, cut short, and oriented in random directions within the compound. However, the resin material 300 is not limited to a thermosetting resin, and may be a thermoplastic resin. In the following, the resin material 300 is made of SMC as a mere example.

[0024] In this embodiment, the extruded material 200 has a rectangular cross-section. The long side of the rectangle extends in the height direction Z, and the short side extends in the width direction Y. The resin material 300 is provided above the extruded material 200 and is formed into a plate shape having a width larger than that of the extruded material 200. The cross-section of the metal resin composite 100 is formed in a T shape and is line-symmetric with respect to the center line in the width direction. The cross-sections of the extruded material 200 and the resin material 300 are also line-symmetric in the same manner.

[0025] Note that the planar shape of the resin material 300 is not particularly limited. Here, as merely an example, the planar shape is a rectangular shape in which the long side extends in the longitudinal direction X and the short side extends in the width direction Y, the short side of the resin material 300 is aligned with both ends in the longitudinal direction X of the extruded material 200, and the cross-section of the metal resin composite 100 is uniform in the longitudinal direction X.

[0026] Referring to FIGS. 2A and 2B, the manufacturing apparatus 1 mainly includes a mold 2, a driving unit 3, and a heating unit 4. The mold 2 includes a first mold 10 and a second mold 20. The first mold 10 is configured as a fixed mold, a lower mold, or a die. The second mold 20 is configured as a movable mold, an upper mold, or a punch. The second mold 20 is disposed above the first mold 10 (i.e., in the mold opening direction M1) and is movable in the vertical direction (i.e., the opening and closing direction) with respect to the first mold 10.

[0027] The first mold 10 has a base portion 11 and a shoulder portion 12. The upper surface of the base portion 11 forms a horizontal lower molding surface 41. The shoulder portion 12 projects upward from the peripheral edge of the base portion 11, and the inner surface of the shoulder portion 12 extends upward from the lower molding surface 41. The inner surface of the shoulder portion 12 is equivalent to the planar shape of the resin material 300 of the metal resin composite 100 in a cross-section perpendicular to the opening and closing direction (not shown in detail). In this example, since the planar shape of the resin material 300 is rectangular (see FIG. 1A), the shoulder portion 12 is in a rectangular window frame shape in plan view as seen from FIGS. 2A and 2B. The lower part of the inner surface of the shoulder portion 12 forms a vertical side molding surface 42. The upper part of the inner surface of the shoulder portion 12 forms a lower mating surface 14.

[0028] The first mold 10 has a housing portion 15 for housing the extruded material 200. The housing portion 15 is recessed in the lower molding surface 41. The housing portion 15 has a U-shaped inner surface 16 and is configured as a groove opened to the lower molding surface 41. The inner surface 16 of the housing portion 15 includes a pair of inner side surfaces 16a that extend downward continuously with the lower molding surface 41, and an inner bottom surface 16c that horizontally connects the inner side surfaces 16a, 16b.

[0029] The second mold 20 has a main body portion 21. The main body portion 21 is, for example, in the shape of a rectangular parallelepiped. The lower surface of the main body portion 21 forms an upper molding surface 43 that faces the lower molding surface 41 in the opening and closing direction. The side surface of the main body portion 21 forms an upper mating surface 24 that extends upward from the periphery of the lower molding surface 41. The upper mating surface 24 is similar to the cross-section of the inner surface of the shoulder portion 12 in a cross-section (not shown in detail) perpendicular to the opening and closing direction, and is slightly smaller than this. For convenience, this interval is exaggerated in the drawings.

[0030] The drive unit 3 moves the second mold 20 in the opening and closing direction between the retracted position (refer to the solid line) and the bottom dead center (refer to the two-dot chain line). The heating unit 4 heats the mold 2.

[0031] Hereinafter, a method for manufacturing the metal resin composite 100 (refer to FIG. 1A) using the above manufacturing apparatus 1 will be described. At the same time, the structures of the mold 2, the extruded material 200, the resin material 300, and the metal resin composite 100 will be further described.

[0032] Referring to FIGS. 2A and 2B, the mold 2 is configured as described above and below and is prepared in the manufacturing apparatus 1. Also, each time one metal resin composite 100 is manufactured, a compound of the extruded material 200 and the resin material 300 is prepared. The second mold 20 is positioned at the retracted position. In a state where the second mold 20 is at the retracted position, the upper molding surface 43 is sufficiently far above the upper end surface of the first mold 10 so that the installation of the extruded material 200 and the compound and the removal of the metal resin composite 100 can be easily performed.

[0033] Referring to FIG. 3, the extruded material 200 to be prepared has a bottom wall 201, a pair of side walls 202, 203, and an upper wall 204. The pair of side walls 202, 203 form the long sides of a rectangular cross-section and extend in the height direction Z, and the bottom wall 201 and the upper wall 204 form the short sides of the rectangular cross-section and extend in the width direction Y. The pair of side walls 202, 203 are erected upward from respective side edges of the bottom wall 201. The upper wall 204 connects the upper portions of the side walls 202, 203. Further, the upper wall 204 protrudes on both sides in the width direction Y with respect to the side walls 202, 203.

[0034] The extruded material 200 has a hollow 210 defined by the inner surfaces of the walls 201 to 204 and one or more partition walls 205 partitioning the hollow 210. The hollow 210 is open at both ends in the longitudinal direction X. In the present embodiment, the partition wall 205 is single and connects the inner surfaces of the side walls 202, 203 between the bottom wall 201 and the upper wall 204 in the height direction Z, and the hollow 210 is divided into a first chamber 211 and a second chamber 212 in the height direction Z by the partition wall 205. However, a plurality of partition walls may be arranged at intervals in the height direction Z, or the partition wall may be omitted.

[0035] In the present embodiment, the three, i.e., the bottom wall 201, the partition wall 205, and the upper wall 204, serve as connection walls connecting the pair of side walls 202, 203. The pair of side walls 202, 203 serve as flexible pieces.

[0036] The extruded material 200 has protrusions 231, 232 protruding from its surface. In the present embodiment, the protrusions 231, 232 are paired in the width direction Y. The pair of protrusions 231, 232 are respectively provided on the outer surfaces of the pair of side walls 202, 203 and protrude outward in the width direction Y from the pair of side walls 202, 203. In particular, the pair of protrusions 231, 232 are provided at an intermediate position between the upper wall 204 and the partition wall 205 in the height direction Z among the pair of side walls 202, 203.

[0037] The extruded material 200 has tapered surfaces 233 and 234 provided on the lower surface sides of the protrusions 231 and 232. The tapered surfaces 233 and 234 connect the side surfaces of the protrusions 231 and 232 and the outer surfaces of the side walls 202 and 203, and slope downward as they go inward in the width direction Y. Here, downward corresponds to the accommodation direction of the extruded material 200 into the accommodation portion 15.

[0038] Next, referring to FIG. 4, the prepared extruded material 200 is accommodated in the accommodation portion 15. Thereafter, the compound of the prepared resin material 300 is placed on the first mold 10. The extruded material 200 and the compound may be installed manually. The manufacturing apparatus 1 may be provided with a manipulator for installing the extruded material 200 and the compound.

[0039] Returning to FIG. 3, the width of the accommodation portion 15 is defined as the distance between the inner surfaces 16a and 16b in the width direction Y. The depth of the accommodation portion 15 is defined as the length in the opening and closing direction from the lower molding surface 41 to the inner bottom surface 16c. The width of the extruded material 200 is defined as the distance between the side end surfaces of the protrusions 231 and 232 in the width direction Y. The height of the extruded material 200 is defined as the length in the height direction Z from the lower surface of the bottom wall 201 to the upper surface of the upper wall 204. The difference between the maximum allowable dimension and the minimum allowable dimension is defined as the dimensional tolerance. The dimensional tolerance of the extruded material 200 is set, for example, within the range of 0.5 to 1.0 mm. In addition to the dimensional tolerance, the extruded material 200 may be molded taking into account geometric tolerances such as, for example, the flatness of the lower surface of the bottom wall 201 and the outer surfaces of the side walls 202 and 203. The prepared extruded material 200 is molded within the tolerance.

[0040] The width of the accommodation portion 15 is smaller than the minimum allowable dimension of the width of the extruded material 200. That is, the accommodation portion 15 is formed so as to cause a design interference with any of the extruded materials 200 molded within the dimensional tolerance. Also, the depth of the accommodation portion 15 is smaller than the minimum allowable dimension of the length in the height direction Z from the lower surface of the bottom wall 201 to the lower surface of the upper wall 204 of the extruded material 200.

[0041] Referring to Fig. 4, in the accommodation of the extruded material 200, the extruded material 200 is inserted into the accommodation portion 15 in an insertion posture with the bottom wall 201 facing downward. As the insertion progresses, the tapered surface 233 abuts against the corner of the inner surface 16a of the accommodation portion 15 and the lower molding surface 41, and the tapered surface 234 abuts against the corner of the inner surface 16b of the accommodation portion 15 and the lower molding surface 41. When a further downward force is applied to the extruded material 200, the protrusions 231, 232 move inward in the field direction Y due to the action of the wedge, and the upper parts of the side walls 202, 203 (the portion between the upper wall 204 and the partition wall 205) are bent and deformed inward in the width direction Y. As a result, the extruded material 200 can move downward with respect to the first mold 10. The extruded material 200 moves downward until the bottom wall 201 seats on the inner bottom surface 16c of the accommodation portion 15. The upper wall 204 is exposed from the accommodation portion 15 and is positioned above the lower molding surface 41.

[0042] The deformation of the side walls 202, 203 remains within the elastic range. The side walls 202, 203 attempt to restore to their original shapes and exert a reaction force toward the outer side in the width direction (the side approaching the inner surface of the accommodation portion 15). The side surfaces of the protrusions 231, 232 are pressed against the inner surfaces 16a, 16b of the accommodation portion 15 by the reaction force due to this elastic deformation. Since the protrusions 231, 232 are attached to the upper parts of the side walls 202, 203, they are in close contact with the upper parts of the inner surfaces 16a, 16b of the accommodation portion 15. As a result, the gap 51 between the surface of the extruded material 200 and the inner surface of the accommodation portion 15 is filled.

[0043] Referring to Fig. 4, next, the mold 2 is preheated in the heating portion 4, and the temperature of the mold 2 is raised to a predetermined temperature. Next, as an example, a compound of the resin material 300 (for example, SMC) is placed on the upper wall 204 and covers the extruded material 200 accommodated in the accommodation portion 15 from above.

[0044] Next, referring to FIG. 5, the drive unit 3 moves the second mold 20 from the retracted position to the bottom dead center in the mold closing direction M2 (downward). In the process of the second mold 20 moving downward, the main body portion 21 is fitted into the shoulder portion 12, and the upper mating surface 24 faces the lower mating surface 14 with a slight mold gap 52 therebetween. The second mold 20 is guided by the shoulder portion 12 and slides downward. The second mold 20 presses the compound of the resin material 300 downward. The compound is softened by the heat of the mold 2 and flows by being pressed by the molding pressure applied from the second mold 20.

[0045] Referring to FIG. 6, in the bottom dead center state where the second mold 20 is positioned at the bottom dead center, the upper molding surface 43 and the lower molding surface 41 are separated in the opening and closing direction. The lower mating surface 14 is a portion of the inner surface of the shoulder portion 12 that is above the upper molding surface 43 in the bottom dead center state of the second mold 20. The side molding surface 42 is a portion of the inner surface of the shoulder portion 12 that is below the upper molding surface 43 in the bottom dead center state of the second mold 20. The lower molding surface 41, the side molding surface 42, and the upper molding surface 43 define a cavity 40 intended to be filled with the compound. The cavity 40 communicates with the mold gap 52. The gap 51, similar to the mold gap 52, is not intended to be filled with the resin material 300.

[0046] In this regard, in the process of the second mold 20 moving downward, the resin material 300 is pressurized downward and flows into the accommodating portion 15. However, the protrusions 231 and 232 are in close contact with the inner side surfaces 16a and 16b of the accommodating portion 15, and the resin material 300 cannot flow over the protrusions 231 and 232 and into the lower part of the accommodating portion 15. In other words, the cavity 40 is blocked from the gap 51 by the protrusions 231 and 232. As a result, the inflow of the resin material 300 into the accommodating portion 15 is blocked by the protrusions 231 and 232. Since the protrusions 231 and 232 are in close contact with the upper parts of the inner side surfaces 16a and 16b, the inflow of the resin material 300 into the accommodating portion 15 is suppressed from decreasing. Note that the mold gap 52 is narrow and the inflow resistance is high. Therefore, even if the resin material 300 flows into the mold gap 52, the amount thereof can be small.

[0047] Although detailed illustration is omitted, when a predetermined period of time elapses with the second mold 20 positioned at the bottom dead center, the resin material 300 hardens. After the resin material 300 hardens, the drive unit 3 moves the second mold 20 in the mold opening direction M1 (upward) to the retracted position. Next, the metal-resin composite 100 is taken out from the first mold 10.

[0048] Since the flow of the resin material 300 into the gap 51 is suppressed, the production efficiency of the metal-resin composite 100 is increased. That is, since the amount of the resin material 300 hardened in the housing portion 15 is small, the release resistance can be kept low. After release, the operation of peeling the unnecessary resin material 300 from the surface of the extruded material 200 can also be simplified, and only the minimum necessary deburring is required. Since the leakage of the compound is suppressed, it is easy to secure an appropriate amount of the resin material 300 in the cavity 40, and the yield rate and the yield are improved.

[0049] Returning to FIGS. 1A and 1B, the hardened resin material 300 has a plate portion 301 that protrudes on both sides in the width direction Y from the extruded material 200 on the extruded material 200, and a protruding portion 302 that protrudes downward from the central portion of the plate portion 301 in the width direction Y. The profiles of the upper molding surface 43, the side molding surface 42, and the lower molding surface 41 (see FIG. 6) are transferred to the upper surface, the side surface, and the lower surface of the plate portion 301, respectively.

[0050] The protruding portion 302 is provided on the protrusions 231 and 232 that contributed to filling the gap 51 (see FIG. 6) in appearance. The protruding portion 302 is provided so as to cover the upper portions of the side walls 202 and 203. The wide upper wall 204 is built into the plate portion 301. Therefore, the strength of the metal-resin composite 100 can be ensured.

[0051] Although the embodiments of the present invention have been described so far, the above configuration can be appropriately changed, added, and deleted within the scope of the gist of the present invention.

Explanation of Reference Numerals

[0052] 1 Manufacturing apparatus 2 Mold 3 Drive unit 4 Heating unit 10 First mold 20 Second mold 30 Third mold 200 Extruded material 201 Bottom wall 202, 203 Side walls 204 Top wall 205 Partition wall 210 Hollow 231, 232 Protrusions 233, 234 Tapered surfaces 300 Resin material

Claims

1. A method for manufacturing a metal-resin composite body, comprising: integrating a resin material with a flexible piece and a metal extrusion having a wedge-shaped protrusion on an outer surface of the flexible piece by press molding; Preparing a die including a first die forming a receiving portion that is designed to interfere with the extruded material, and a second die movable relative to the first die; the extrusion material is accommodated in the accommodation portion in a state in which the flexible piece is bent toward the inside of the accommodation portion due to interference between the protrusion and the accommodation portion, and the resin material is placed on the first die; moving the second die in a die closing direction to form a cavity that is defined by a surface of the extruded material and the die and is isolated from a gap between an inner surface of the accommodation portion and the surface of the extruded material, and pressurizing the resin material to fill the cavity; A method for producing a metal-resin composite comprising the steps of:

2. A tapered surface is provided on the lower surface side of the protrusion, the tapered surface being inclined so as to approach the outer surface of the flexible piece as it moves in the direction in which the extruded material is accommodated in the accommodation portion. The method for producing the metal-resin composite body according to claim 1 .

3. The extrusion material has a pair of opposing walls and two or more connecting walls connecting the pair of opposing walls in a cross section perpendicular to the longitudinal direction, the flexible piece is formed by the opposing walls, and the protrusion is provided at a middle position between two adjacent connecting walls of the opposing walls; The method for producing the metal-resin composite body according to claim 1 .

4. A manufacturing apparatus for a metal resin composite body, comprising: a flexible piece; and a metal extrusion member having a wedge-shaped protrusion provided on an outer surface of the flexible piece; and a resin material is integrated with the metal extrusion member by press molding, A die including a first die forming a receiving portion that is designed to interfere with the extruded material, and a second die movable relative to the first die; A moving mechanism that moves the second die; Equipped with the extrusion member is accommodated in the accommodation portion in a state in which the flexible piece is bent toward the inside of the accommodation portion due to interference between the protrusion and the accommodation portion, When the second die is moved by the moving mechanism with the resin material placed on the first die, a cavity is formed that is defined by the surface of the extruded material and the die and is isolated from the gap between the inner surface of the housing portion and the surface of the extruded material, and the resin material is pressurized and filled into the cavity. Metal-resin composite manufacturing equipment.

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