In-die riveting mold, and component-manufacturing method using same

Abstract

Disclosed are an in-die riveting mold, and a component-manufacturing method using same. The disclosed in-die riveting mold includes: a lower die for supporting a pair of members each having a joining part, such that the pair of joining parts overlap each other; an upper die that can move with respect to the lower die in a direction of approaching the lower die and in the opposite direction thereof and approach the lower die supporting the pair of members, so as to hold the pair of members; and rivet punches installed in one of the upper die and the lower die, each supporting a rivet at an end portion thereof. While the pair of members are held between the upper die and the lower die, the rivet punches move with respect to the pair of joining parts to approach same and the rivets couple the pair of joining parts.

Description

In-die riveting mold and method for manufacturing parts using the same

[0001] The present invention relates to an in-die riveting mold for manufacturing a part by riveting a plurality of fixed members within a mold, and a method for manufacturing a part using the same.

[0002] For example, automotive components such as duct mountings, which form the floor of a bus' passenger compartment, are typically manufactured by joining multiple steel plates using welding methods such as Tungsten Inert Gas Welding (TIG). However, with the demand for lighter components to improve fuel efficiency, steel plates are increasingly being replaced in automotive components with non-ferrous metal or plastic plates. However, these non-ferrous metal or plastic plates present a problem in that they are unsuitable for welding.

[0003] Meanwhile, a method of manufacturing parts by riveting non-ferrous metal or plastic sheets may be considered. However, this method requires multiple rivet joints per part, requiring repeated riveting, which reduces part manufacturing productivity. Furthermore, the variation in joint quality depending on the skill level of the worker can increase, potentially reducing the yield of good products.

[0004] The background technology of the present invention is disclosed in Korean Patent Publication No. 10-2147098 (registered on August 24, 2020, title of invention: self-piercing riveting device).

[0005] The present invention was created to improve the above-mentioned problems, and provides an in-die riveting mold that fixes a plurality of members in a mold and simultaneously connects a plurality of points by riveting, and a method for manufacturing parts using the same.

[0006] The present invention provides an in-die riveting mold comprising: a lower die for supporting a pair of members, each having a joint portion, so that the pair of joint portions overlap; an upper die, which is relatively movable with respect to the lower die in a direction approaching the lower die and in an opposite direction, and approaches the lower die on which the pair of members are supported to hold the pair of members; and a rivet punch, which is installed in one of the upper die and the lower die and supports a rivet at a distal end thereof; wherein the rivet punch moves relatively with respect to the pair of joint portions so that the pair of members are held between the upper die and the lower die, so that the rivet joins the pair of joint portions.

[0007] The above rivet may be a self-piercing rivet (SPR) having a head portion supported by the end of the rivet punch, and a hook portion protruding from the head portion so as to penetrate a pair of joints.

[0008] The in-die riveting mold of the present invention may further include an anvil block installed on a die opposite to the die in which the rivet punch is installed among the upper die and the lower die, and inducing deformation of the hook portion dug into the pair of joints so that the rivet is fastened to the pair of joints.

[0009] The above anvil block can be removably fixed to the opposite die.

[0010] The lower die may include a base block, a joint mounting surface on which the pair of joints are mounted in an overlapping state, a core block supporting the pair of members, and a spring that elastically urges the core block in a direction away from the base block.

[0011] The rivet punch is installed in the base block, a rivet punch through hole is formed in the core block for the rivet punch to penetrate, and when the pair of members are supported on the core block and the upper die and the base block come close to each other, the upper die first holds the pair of members in close contact, and then the rivet supported by the rivet punch can join the pair of joints.

[0012] The in-die riveting mold of the present invention may further include a shaped punch installed in one of the upper die and the lower die and moving relatively toward one of the pair of members to form a concave groove or hole in the one member.

[0013] At least one of the above pair of members may be made of non-ferrous metal or plastic.

[0014] In addition, the present invention provides a method for manufacturing a part in which a pair of members are joined by the rivet using the above-described in-die riveting mold, the method comprising: a part preparation step for manufacturing the pair of members; a rivet loading step for mounting a rivet so that the rivet is supported by a distal end of the rivet punch while the upper die and the lower die are spaced apart from each other; a part loading step for seating and supporting the pair of members on the lower die so that the pair of joints overlap; a mold closing step for moving at least one die of the upper die and the lower die toward the other die so that the upper die and the lower die come closer to each other to hold the pair of members; a rivet joining step for bringing the rivet punch close to the pair of joints so that the rivet joins the pair of joints; and a mold opening and part removal step for separating the upper die and the lower die and removing the part from between the upper die and the lower die.

[0015] At least one of the above pair of members is made of metal, and the member preparation step may include a step of manufacturing the at least one member by pressing a metal plate.

[0016] According to the present invention, a plurality of members can be fixed within a mold and a plurality of points can be simultaneously riveted to join them, thereby improving productivity in manufacturing parts and increasing the yield of good products regardless of the skill level of the worker.

[0017] According to the present invention, it is possible to join non-ferrous metal or plastic materials that are difficult to join by welding. Therefore, in particular, it is possible to easily reduce the weight of parts for transportation machinery such as automobiles and aircraft.

[0018] FIG. 1 is a perspective view illustrating a part manufactured using an in-die riveting mold according to an embodiment of the present invention.

[0019] FIG. 2 and FIG. 3 are cross-sectional views of an indie riveting mold according to an embodiment of the present invention, wherein FIG. 2 is a cross-sectional view corresponding to a cross-sectional view taken along line II-II of the part of FIG. 1, and FIG. 3 is a cross-sectional view corresponding to a cross-sectional view taken along line III-III of the part of FIG. 1.

[0020] Figure 4 is a flowchart of a method for manufacturing a component according to an embodiment of the present invention.

[0021] Figures 5 and 6 are enlarged cross-sectional views of part A of Figure 2. Figure 5 is a drawing showing the mold in an opened state, and Figure 6 is a drawing showing the mold in a closed state.

[0022] Figure 7 is an enlarged cross-sectional view of part B of Figure 3, showing the mold being opened.

[0023] Hereinafter, with reference to the attached drawings, an in-die riveting mold and a method for manufacturing parts using the same according to embodiments of the present invention will be described in detail. The terminology used in this specification is intended to adequately express preferred embodiments of the present invention and may vary depending on the intent of the user or operator or the customary practices in the field to which the present invention pertains. Therefore, the definitions of these terms should be based on the contents throughout this specification.

[0024] Fig. 1 is a perspective view illustrating a component manufactured using an in-die riveting mold according to an embodiment of the present invention. Specifically, the component illustrated in Fig. 1 is a duct mounting (10) that constitutes the floor of a passenger space inside a bus. Referring to Fig. 1, the duct mounting (10) is manufactured by connecting a first member (11) and a second member (21) so that they are connected. The first member (11) and the second member (21) have the same cross-section when cut in the width direction.

[0025] The first member (11) and the second member (21) each have flange portions (15, 25) at both ends in the width direction, and channel portions (12, 22) that are connected to the flange portions (15, 25) and protrude stepwise from the flange portions (15, 25). The channel portions (12, 22) extend in one direction so that a cable (not shown) can be accommodated in the stepped internal space, and the flange portions (15, 25) also extend parallel to the channel portions (12, 22). A plurality of grooves (13, 23) that are concavely dug inward are formed at the center of the channel portions (12, 22) so as to reinforce rigidity against bending or torsion.

[0026] The ends of the first member (11) and the second member (21) are provided with joints (16, 26) that overlap each other and are joined by a plurality of rivets (1). In order to reduce the weight of the component (10), i.e., the duct mounting, at least one of the first member (11) and the second member (21) may be made of a non-ferrous metal or plastic. When the material of the first member (11) and the second member (21) is a metal plate made of iron (Fe) or a non-ferrous metal, the first member (11) and the second member (21) may be manufactured by press-processing the metal plate as the material before riveting the first member (11) and the second member (21). For example, the non-ferrous metal may be aluminum (Al) or an alloy containing aluminum as a main material. Meanwhile, when at least one of the first member (11) and the second member (21) is made of plastic, the material made of plastic may be manufactured by injection molding.

[0027] FIG. 2 and FIG. 3 are cross-sectional views of an in-die riveting mold according to an embodiment of the present invention, wherein FIG. 2 is a drawing corresponding to a cross-sectional view taken along line II-II of the component of FIG. 1, FIG. 3 is a drawing corresponding to a cross-sectional view taken along line III-III of the component of FIG. 1, FIG. 4 is a flowchart of a method for manufacturing a component according to an embodiment of the present invention, and FIGS. 5 and 6 are enlarged cross-sectional views of part A of FIG. 2, wherein FIG. 5 is a drawing showing an opened state of the mold, FIG. 6 is a drawing showing an opened state of the mold, and FIG. 7 is an enlarged cross-sectional view of part B of FIG. 3, showing an opened state of the mold. The component (10) of FIG. 1 is riveted using the in-die riveting mold (30) according to the embodiment of the present invention shown in FIGS. 2 and 3.

[0028] Referring to FIGS. 1 to 3, the in-die riveting mold (30) is a mold that chucks, i.e., holds and fixes, a separated first member (11) and a second member (21), and performs multiple riveting operations simultaneously to rivet-join the first member (11) and the second member (21). The in-die riveting mold (30) is equipped with a lower die (31), an upper die (50), a plurality of rivet punches (60), a plurality of anvil blocks (70), and a plurality of shape punches (66).

[0029] The lower die (31) supports the first member (11) and the second member (21) so that a pair of joints (16, 26), that is, the joint (16) of the first member (11) and the joint (26) of the second member (21) overlap. The lower die (31) has a base block (32), a core block (40), and a plurality of springs (65). The core block (40) is positioned on the upper side of the base block (32) so that the upper side (33) of the base block (32) faces the lower side (41) of the core block (40).

[0030] On the upper surface (33) of the base block (32), a plurality of rivet punch installation grooves (34) in which a plurality of rivet punches (60) are fixedly installed, a plurality of spring mounting grooves (35) in which a plurality of springs (65) are inserted and mounted, and a plurality of shape punch installation grooves (36) in which a plurality of shape punches (66) are fixedly installed are formed. The plurality of springs (65) are inserted and mounted one by one in the plurality of spring mounting grooves (35) to elastically press the core block (40) in a direction in which the lower surface (41) of the core block (40) is spaced apart from the upper surface (33) of the base block (32).

[0031] On the upper surface of the core block (40), a joint mounting surface (45) is formed on which a pair of joints (16, 26) are supported in an overlapping state, a first member mounting surface (42) on which another portion of the first member (11) excluding the joint (16), i.e., the channel portion (12) and the flange portion (15) of the first member (11) are supported, and a second member mounting surface (43) on which another portion of the second member (21) excluding the joint (26), i.e., the channel portion (22) and the flange portion (25) of the second member (21) are supported. Unlike the form illustrated in FIG. 1, the first member (11) and the second member (21) are supported on the core block (40) in a form in which the channel portions (12, 22) are protruded and turned over.

[0032] The upper die (50) is relatively movable with respect to the lower die (31) in the direction approaching the lower die (31) and in the opposite direction by hydraulic pressure, and approaches the lower die (31) on which the first member (11) and the second member (21) are supported, thereby holding the first member (11) and the second member (21). In other words, the separated first member (11) and second member (21) are chucked without shaking while the joints (16, 26) overlap each other.

[0033] On the lower surface of the upper die (50), a joint contact surface (53) that is in close contact with a pair of overlapping joints (16, 26), a first member contact surface (51) that is in close contact with another part of the first member (11) excluding the joint (16), that is, the channel part (12) and the flange part (15) of the first member (11), and a second member contact surface (52) that is in close contact with another part of the second member (21) excluding the joint (26), that is, the channel part (22) and the flange part (25) of the second member (21) are formed. In addition, a plurality of anvil block installation grooves (57) in which a plurality of anvil blocks (70) are fixedly installed are formed on the lower surface of the upper die (50).

[0034] When the lower die (31) and the upper die (50) come closer to each other so that the first member (11) and the second member (21) are chucked between the lower die (31) and the upper die (50), this is called 'molding closing', and conversely, when the lower die (31) and the upper die (50) move apart from each other, this is called 'molding opening'. Meanwhile, in the in-die riveting mold (30) illustrated in FIGS. 2 and 3, the lower die (31) is not raised and lowered, but only the upper die (50) is raised and lowered to switch between the mold closing and mold opening states, but the in-die riveting mold of the present invention is not limited to this structure. In other words, the present invention also includes an in-die riveting mold having a structure in which only the lower die is raised and lowered without the upper die being raised and lowered to switch between the mold-closing and mold-opening states, or an in-die riveting mold having a structure in which the upper die and the lower die are simultaneously moved in opposite directions to switch between the mold-closing and mold-opening states.

[0035] Referring to FIGS. 1 to 3, 5, and 6 together, a plurality of rivet punches (60) are removably and securely installed one by one in a plurality of rivet punch installation grooves (34) of a base block (32). Each rivet punch (60) has the shape of a column or rod extending in the vertical direction, and a rivet installation groove (61) in which a rivet (1) is installed is formed at the end, that is, the upper end.

[0036] A plurality of rivet punch through holes (46) are formed in the core block (40) so that a plurality of rivet punches (60) can penetrate through them. Each rivet punch through hole (46) is formed so as to penetrate the core block (40) in the thickness direction at a position aligned vertically with the corresponding rivet punch (60).

[0037] A rivet (1) is a self-piercing rivet (SPR) having a head portion (2) that is supported and seated in a rivet mounting groove (61) of a rivet punch (60), and a hook portion (3) that protrudes and extends from the head portion (2) so as to penetrate a pair of overlapping joints (16, 26). The hook portion (3) may have a plurality of projections at the ends (4) that are spaced apart from each other.

[0038] A plurality of anvil blocks (70) are detachably and fixedly installed one by one in a plurality of anvil block installation grooves (57) formed in an upper die (50), which is an opposite die of a lower die (31) in which a plurality of rivet punches (60) are installed. Each anvil block (70) is installed at a position aligned vertically with the corresponding rivet punch (60).

[0039] When a plurality of rivet punches (60) are moved relative to a pair of overlapping joints (16, 26) so as to approach the pair of overlapping joints (16, 26) while the first member (11) and the second member (21) are held steady between the upper die (50) and the lower die (31), a plurality of rivets (1) supported by being seated in the rivet mounting grooves (61) simultaneously join the pair of overlapping joints (16, 26).

[0040] Specifically, when the upper die (50) and the lower die (31) are spaced apart and the first member (11) and the second member (21) are supported and fixed on the upper surface of the core block (40), and the upper die (50) approaches the lower die (31), the upper die (50) first holds the first member (11) and the second member (21) supported on the core block (40) in close contact so as not to shake. In other words, the first member (11) and the second member (21) are chucked. At this time, the core block (40) and the base block (32) are spaced apart by a plurality of springs (65).

[0041] As the upper die (50) continues to descend to approach the base member (32), the core member (40) descends toward the base member (32) while the first member (11) and the second member (21) are chucked, so that the plurality of rivet punches (60) move relative to each other to approach a pair of overlapping joints (16, 26). Accordingly, the plurality of rivets (1) supported by the plurality of rivet punches (60) join the pair of overlapping joints (16, 26).

[0042] Each anvil block (70) supports the overlapping joints (16, 26) so that the ends (4) of the hook portions (3) of the rivets (1) pressed by the corresponding rivet punches (60) can easily dig into and be inserted into the overlapping joints (16, 26). In addition, the anvil block (70) induces deformation of the hook portions (3) dug into the overlapping joints (16, 26) so that the rivets (1) are fastened to the overlapping joints (16, 26) and the pair of joints (16, 26) are joined without separation.

[0043] Specifically, the anvil block (70) has a central protrusion (73) that protrudes toward the rivet punch (60) so as to be aligned vertically with the center of the head portion (2), and an annular groove (73) that is concavely formed along a circumferential orbit centered on the central protrusion (73). As illustrated in FIG. 6, the hook portion (3) that has dug into a pair of overlapping joints (16, 26) has its end (4) penetrate to the joint portion (26) that is relatively farther from the rivet punch (60) among the pair of joints (16, 26). Unlike the hook portion (3), the head portion (2) cannot dig into the pair of joints (16, 26).

[0044] The hook portion (3) is deformed plastically in the direction of spreading within the pair of joints (16, 26) by avoiding the central protrusion (73). Unlike the central protrusion (73), the concavely dug annular groove portion (73) provides a space in which the hook portion (3) is deformed and the pair of joints (16, 26) pushed by the hook portion (3) are partially deformed and filled.

[0045] A plurality of shape punches (66) are detachably and fixedly installed one by one in a plurality of shape punch installation grooves (36) of the base block (32). Each shape punch (66) is provided with an upwardly protruding projection (67) so as to form a concave groove (13, 23) in the channel portions (12, 22) of the first member (11) and the second member (21). Meanwhile, the shape punch (66) illustrated in FIGS. 3 and 7 is for forming a concave groove (13, 23) in the component (10), but the in-die riveting mold of the present invention is not limited thereto, and may also be provided with a shape punch for forming a hole penetrating the first member (11) and the second member (21).

[0046] A plurality of shape punch penetration holes (47) are formed in the core block (40) so that a plurality of shape punches (66) can penetrate therethrough. Each shape punch penetration hole (47) is formed so as to penetrate the core block (40) in the thickness direction at a position aligned vertically with the corresponding shape punch (66). A fine concave surface (55) is formed on the lower surface of the upper die (50) so that a portion of the first member (11) and a portion of the second member (21) pressed against the plurality of protrusions (67) can be plastically deformed into the shape of a concave groove (13, 23).

[0047] As described above, a plurality of rivet punches (60) and a plurality of shape punches (66) are detachably fixedly installed to the base block (32), and a plurality of anvil blocks (70) are detachably fixedly installed to the upper die (50). Therefore, even if one of the rivet punches (60), the shape punches (66), and the anvil block (70) is damaged through repeated work, only the damaged part needs to be replaced and installed without having to remanufacture the entire lower die (31) or upper die (50), thereby reducing the maintenance cost of the in-die riveting mold (30).

[0048] In the case of the in-die riveting mold (30) described with reference to FIGS. 2, 3, and 5 to 7, the rivet punch (60) and the shape punch (66) are installed in the lower die (31) and the anvil block (70) is installed in the upper die (50). However, conversely, an in-die riveting mold in which the rivet punch and the shape punch are installed in the upper die and the anvil block is installed in the lower die may also belong to the present invention. In addition, the in-die riveting mold (30) described with reference to FIGS. 2, 3, and 5 to 7 has the rivet punch (60) fixedly installed in the base block (32) and does not have a separate actuator for raising and lowering the rivet punch (60) in addition to the actuator for raising and lowering the upper die (50). However, an in-die riveting mold that has a separate actuator for raising and lowering the rivet punch may also belong to the present invention.

[0049] Referring to FIGS. 1 to 4 together, a method for manufacturing a part (10) in which a first part (11) and a second part (21) are joined by a plurality of rivets (1) using an in-die riveting mold (30) comprises a part preparation step (S10), a rivet loading step (S20), a part loading step (S30), a mold closing step (S40), a rivet joining step (S50), and a mold opening and part removal step (S60).

[0050] The member preparation step (S10) is a step for manufacturing the first member (11) and the second member (21). When the first member (11) and the second member (21) are made of metal, the metal plate material that is the material of the first member (11) and the second member (21) can be press-processed using a separate press mold rather than an in-die riveting mold (30) to manufacture the first member (11) and the second member (21). The metal plate material can be, for example, a non-ferrous metal plate material made of a non-ferrous metal such as aluminum (Al) or an alloy containing aluminum as a main material.

[0051] Meanwhile, at least one of the first member (11) and the second member (21) may be made of plastic. In this case, the member made of plastic may be manufactured by injection molding.

[0052] Referring to FIGS. 1 to 5 together, the rivet loading step (S20) is a step of loading a plurality of rivets (1) so that the plurality of rivets (1) are supported in the distal rivet loading grooves (61) of the plurality of rivet punches (60) in a mold-open state where the upper die (50) and the lower die (31) are spaced apart. The member loading step (S30) is a step of supporting and fixing the first member (11) and the second member (21) on the lower die (31) so that the pair of joints (16, 26) overlap each other.

[0053] Specifically, a pair of joints (16, 26) are supported in an overlapping state on the joint mounting surface (45) of the core block (40), and other parts of the first member (11) excluding the joint (16), i.e., the channel portion (12) and the flange portion (15) of the first member (11), are supported on the first member mounting surface (42) of the core block (40), and other parts of the second member (21) excluding the joint (26), i.e., the channel portion (22) and the flange portion (25) of the second member (21) are supported on the second member mounting surface (43) of the core block (40). The rivet loading step (S20) and the member loading step (S30) can be performed by a worker or a robot arm (not shown).

[0054] In the absence loading step (S30), the first member (11) and the second member (21) are supported and secured to the lower die (31) in a state where the pair of joints (16, 26) overlap each other so that the joint (16) with greater rigidity among the pair of joints (16, 26) is positioned closer to the rivet punch (60) than the other joint (26).

[0055] For example, when the first member (11) is made of stainless steel and the second member (21) is made of aluminum (Al) or an aluminum alloy having lower rigidity than the first member (11), a pair of joints (16, 26) overlap so that the joint (16) of the first member (11) is in contact with and supported by the joint mounting surface (45) of the core block (40), and the joint (26) of the second member (21) is in contact with and supported by the joint (16) of the first member (11).

[0056] Referring to FIGS. 1 to 6 together, the mold closing step (S40) is a step of moving the upper die (50) toward the lower die (31) so that the upper die (50) and the lower die (31) come closer to each other, thereby holding the first member (11) and the second member (21) without shaking during the riveting process. The rivet joining step (S50) is a step of bringing a plurality of rivet punches (60) close to a pair of joints (16, 26) in which a plurality of rivets (1) are overlapped so as to join the pair of joints (16, 26). The mold closing step (S40) and the rivet joining step (S50) have been described in detail while explaining the in-die riveting mold (30) with reference to FIGS. 2, 3, 5, and 6, so that a duplicate description will be omitted. As can be seen from the description with reference to FIGS. 2, 3 and 7, a rivet (1) is fastened to an overlapping joint (16, 26) by a riveting step (S50) and at the same time, a concave groove (13, 23) is formed in the first member (22) and the second member (21) by a plurality of shape punches (66).

[0057] The mold opening and component removal step (S60) is a step of separating the upper die (50) and the lower die (31), and removing the component (10) in which the first component (11) and the second component (21) are combined from between the upper die (50) and the lower die (31) to the outside of the in-die riveting mold (30). The upper die (50) can be raised and separated from the lower die (31). The operation of removing the component (10) can be performed by a worker or a robot arm (not shown).

[0058] Meanwhile, unlike the above, the upper die (50) may not be raised and lowered, and only the lower die (31) may be raised and lowered, or the upper die (50) and the lower die (31) may be raised and lowered simultaneously in opposite directions to perform the mold closing step (S40), the riveting step (S50), and the mold opening and component removal step (S60).

[0059] According to the in-die riveting mold (30) described above and the method for manufacturing parts using the same, a plurality of members (11, 21) can be fixed within the mold (30) and a plurality of points can be simultaneously riveted together, thereby improving the productivity of manufacturing the members (10) and increasing the yield of good products regardless of the worker's skill level. In addition, members (11, 21) made of non-ferrous metal or plastic that are difficult to join by welding can be joined, thereby making it possible to easily reduce the weight of parts for transportation machinery such as automobiles and aircraft.

[0060] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined solely by the appended claims.

Claims

1. A lower die that supports a pair of members each having a joint portion so that the pair of joint portions overlap each other; An upper die that is relatively movable with respect to the lower die in a direction approaching the lower die and in an opposite direction, and that approaches the lower die on which the pair of members are supported and holds the pair of members; and A rivet punch is installed in one of the upper die and the lower die and supports a rivet at the end; An in-die riveting mold characterized in that the pair of members is held between the upper die and the lower die, and the rivet punch moves relatively to the pair of joints so as to approach the pair of joints, and the rivet joins the pair of joints.

2. In paragraph 1, The above rivet, A head portion supported at the end of the above rivet punch, and An in-die riveting mold characterized by being a self-piercing rivet (SPR) having a hook portion protruding from the head portion so as to penetrate a pair of joints.

3. In paragraph 2, An in-die riveting mold characterized in that it further comprises an anvil block, which is installed on the die opposite the die in which the rivet punch is installed among the upper die and the lower die, and which induces deformation of the hook portion dug into the pair of joints so that the rivet is fastened to the pair of joints.

4. In paragraph 3, An in-die riveting mold characterized in that the anvil block is detachably fixed to the opposite die.

5. In paragraph 1, The above lower die, base block, A core block having a joint mounting surface on which the pair of joints are mounted in an overlapping state, and supporting the pair of members; and An in-die riveting mold characterized in that it comprises a spring that elastically presses the core block in a direction away from the base block.

6. In paragraph 5, The above rivet punch is installed in the above base block, A rivet punch through hole is formed in the core block so that the rivet punch can penetrate through it. An in-die riveting mold characterized in that when the upper die and the base block come close to each other while the pair of members are supported on the core block, the upper die first holds the pair of members in close contact and then the rivet supported on the rivet punch joins the pair of joints.

7. In paragraph 1, An in-die riveting mold further comprising a shaped punch installed in one of the upper die and the lower die and moving relatively toward one of the pair of members to form a concave groove or hole in the one member.

8. In paragraph 1, An indie riveting mold, characterized in that at least one of the pair of members is made of a non-ferrous metal or plastic.

9. A method for manufacturing a part in which a pair of members are joined by the rivet using the indie riveting mold of the first clause, A member preparation step for manufacturing the above pair of members; A rivet loading step of loading the rivet so that the rivet is supported at the end of the rivet punch while the upper die and the lower die are spaced apart; A member loading step for supporting and fixing the pair of members on the lower die so that the pair of joints overlap; A mold closing step of holding the pair of members by moving at least one die among the upper die and the lower die toward the other die so that the upper die and the lower die come closer; A riveting step of bringing the rivet punch close to the pair of joints so that the rivet joins the pair of joints; and, A method for manufacturing a part, characterized by comprising a mold opening and part removal step of separating the upper die and the lower die and removing the part between the upper die and the lower die.

10. In paragraph 9, At least one of the above pair of members is made of metal, A method for manufacturing a part, characterized in that the above-mentioned member preparation step comprises a step of manufacturing the at least one member by press-processing a metal plate.

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