Riveting die and new rivet
By using the riveting components and novel rivet design in the riveting mold, uniform wrapping of the riveted parts and rivets is achieved, solving the problems of root skewing and detachment when riveting thin sheet metal parts, and improving the riveting strength and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LCFC HEFEI ELECTRONICS TECH
- Filing Date
- 2025-04-16
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technologies, when thin sheet metal parts are riveted to rivets, the root of the rivet is prone to skew and the rivet may fall off, affecting assembly.
By using the riveting components in the riveting mold, the extruder simultaneously presses towards the center of the rivet shank, so that the riveting edge of the riveting component evenly wraps around the periphery of the rivet. Combined with the riveting part design of the new rivet, the riveting strength between the rivet and the riveting component is improved.
It significantly improves the radial bending strength of rivets after riveting, solves the problem of rivet root misalignment during riveting, which affects assembly, and enhances the riveting firmness.
Smart Images
Figure CN224406359U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of riveting equipment technology, and in particular to a riveting mold and a novel rivet. Background Technology
[0002] In the fields of system equipment and general electronic products, due to the need for miniaturization, mounting structures typically employ multi-layered, high-specification connectors, such as screw studs with high protrusions. Figure 1 As shown, in related technologies, rivets are used to connect sheet metal parts. The rivet body is typically cylindrical, and the riveting holes in the sheet metal parts are correspondingly cylindrical bosses with open centers. This results in relatively poor riveting stability between the rivet and the riveting holes in the sheet metal parts. Furthermore, to meet the demands of lightweight and compact designs, sheet metal parts are usually made of thinner material. This leads to weaker rivet root strength, making the rivet prone to misalignment and detachment at the connection point, resulting in misalignment of the screw holes and affecting assembly.
[0003] In view of this, there is an urgent need in the market for a new type of riveting mold to solve the problems of root misalignment and rivet falling off when riveting thin sheet metal parts with rivets, which affect assembly. Utility Model Content
[0004] This disclosure provides a riveting mold to solve the problems in related technologies where thin sheet metal parts are easily riveted to rivets, resulting in root misalignment and rivet detachment, which affects assembly.
[0005] The riveting mold provided in this embodiment includes an upper riveting mold, a lower riveting mold, and a riveting assembly;
[0006] The riveting lower die has a recessed riveting hole, and a riveting assembly is provided in the riveting hole;
[0007] The riveting assembly includes a receiving hole for receiving a rivet and an extrusion member disposed on the inner periphery of the receiving hole.
[0008] The riveting die can press the rivet and the riveting member into the riveting assembly, and the extruder can simultaneously extrude towards the center of the receiving hole so that the riveting member is at least partially wrapped around the periphery of the rivet.
[0009] In one embodiment, the riveting assembly further includes a linkage disposed in the receiving hole;
[0010] The linkage can be pressed by the rivet and moved along the depth direction of the receiving hole, and simultaneously drive the pressing member to move towards the center of the receiving hole.
[0011] In one possible embodiment, the extrusion member is hinged to the riveting assembly via a hinge shaft.
[0012] The extrusion side of the extrusion member is provided with a recessed slot;
[0013] The linkage component has a mating part that is engaged in the recessed slot;
[0014] When the linkage moves along the depth direction of the receiving hole, the mating part can correspondingly press the recessed slot, and cause the pressing member to rotate and press around the hinge axis toward the center of the receiving hole.
[0015] In one embodiment, along the depth direction of the receiving hole, one end of the recessed bayonet forms a pressing edge for pressing the riveted part, and the other end forms a blocking edge for blocking the mating part.
[0016] In one possible embodiment, the riveting assembly further includes a spring element;
[0017] One end of the elastic member is connected to the riveting lower die, and the other end is connected to the extrusion member;
[0018] The elastic member can apply elastic force to the extrusion member, so that the recessed latch tends to rotate away from the mating part;
[0019] When the mating part presses against the recessed slot, the recessed slot can overcome the elastic force of the elastic member and rotate toward the center of the receiving hole.
[0020] In one possible embodiment, the riveting assembly further includes a reset member;
[0021] Along the depth direction of the receiving hole, one end of the linkage is connected to the reset member;
[0022] The reset component is used to reset the linkage component along the depth direction of the receiving hole to the position before it was squeezed by the rivet.
[0023] In one possible embodiment, the riveting assembly further includes an insert;
[0024] The insert is fixedly installed in the riveting lower mold, and has the receiving hole in it;
[0025] Multiple extrusion members are arranged in a ring array along the inner peripheral wall of the receiving hole;
[0026] The linkage is located at the center of the plurality of extrusion members and can synchronously drive the plurality of extrusion members to move radially toward the rivet along the receiving hole.
[0027] In one embodiment, the insert includes a first column segment and a second column segment, wherein the diameter of the first column segment is larger than that of the second column segment;
[0028] The first column segment is fitted into the riveting lower mold, and the end face is recessed to form a circular receiving hole;
[0029] The second column segment is located below the first column segment and has a corresponding through hole for accommodating the riveting assembly.
[0030] In addition, this disclosure also provides a novel rivet that can be used in conjunction with the above-mentioned riveting mold, which includes a rivet head and a rivet shank;
[0031] One end of the rivet rod is connected to the rivet head, and the other end has a connecting hole;
[0032] A riveting portion is also provided at the end peripheral wall of the rivet rod near the rivet head;
[0033] The rivet can be riveted and wrapped around the rivet portion in a manner that is inclined toward the center of the rivet shank.
[0034] In one embodiment, a relief groove is formed between the riveting portion and the rivet head;
[0035] Along a direction away from the relief groove, the peripheral wall of the riveting part is configured as a conical wall inclined toward the center of the rivet shank.
[0036] The technical solution provided in this disclosure has the following advantages compared with related technologies:
[0037] This disclosure provides a riveting mold that, during the riveting of a rivet and a rivet, uses a pressing element to simultaneously press against the rivet shank, thereby ensuring that the riveting edge of the rivet is evenly wrapped around the circumference of the rivet shank under radial pressure. This improves the riveting strength between the rivet and the rivet, significantly increases the radial bending strength of the rivet after riveting, and effectively solves the problem of rivet root misalignment during riveting, which affects assembly.
[0038] In addition, this disclosure also provides a novel rivet that can be adapted to the above-mentioned riveting mold, and can also solve the problem that the rivet root is prone to bend during riveting, which affects the assembly.
[0039] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description
[0040] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:
[0041] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
[0042] Figure 1 A schematic diagram of the first state of the riveting die provided in an embodiment of this disclosure is shown;
[0043] Figure 2 A schematic diagram of the second state of the riveting die provided in an embodiment of this disclosure is shown;
[0044] Figure 3 An exploded view of the riveting assembly in the riveting mold provided in an embodiment of this disclosure is shown;
[0045] Figure 4 A schematic diagram of a novel rivet provided in an embodiment of this disclosure is shown.
[0046] Explanation of the markings in the diagram: 1. Riveting the upper mold;
[0047] 2. Rivet the lower mold;
[0048] 3. Riveting assembly; 31. Receiving hole; 32. Extrusion part; 321. Recessed bayonet; 321a. Extrusion edge; 321b. Stop edge; 33. Linkage part; 331. Mating part; 34. Elastic part; 35. Reset part; 36. Insert; 361. First column section; 362. Second column section;
[0049] 4. Rivet; 41. Rivet head; 42. Rivet shank; 421. Connecting hole; 422. Riveting part; 423. Relief groove;
[0050] 5. Riveted parts. Detailed Implementation
[0051] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0052] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.
[0053] Combination Figure 1 and Figure 2As shown, this embodiment of the present disclosure provides a riveting mold, which includes an upper riveting mold 1, a lower riveting mold 2, and a riveting assembly 3; the lower riveting mold 2 has a recessed riveting hole, and the riveting assembly 3 is disposed in the riveting hole; the riveting assembly 3 has a receiving hole 31 for receiving a rivet, and an extruder 32 disposed in the inner periphery of the receiving hole; the upper riveting mold 1 can press the rivet and the riveting member 5 into the riveting assembly 3, and the extruder 32 can simultaneously extrude toward the center of the receiving hole 31, so that the riveting member 5 is at least partially wrapped around the periphery of the rivet.
[0054] The riveting mold provided in this embodiment can specifically, but is not limited to, riveting and fixing rivets and riveting parts 5, wherein the riveting parts 5 can be, but is not limited to, sheet metal parts, metal sheets, etc.
[0055] The riveting die includes an upper riveting die 1 and a lower riveting die 2. A riveting assembly 3 is installed in the riveting hole of the lower riveting die 2. The receiving hole 31 of the riveting assembly 3 is used to place the rivet and the riveting part 5 to be riveted. In addition, a pressing member 32 that can move radially is also provided in the receiving hole 31. When the upper riveting die 1 presses down to push the rivet into the receiving hole 31 and rivets it with the riveting part 5, the pressing member 32 can press towards the center under the pressing action, forcing the riveting edge of the riveting part 5 to wrap and press towards the circumferential wall of the rivet shank. This improves the radial bending strength of the rivet after riveting and increases the riveting firmness between the rivet and the riveting part 5, thereby effectively solving the problem that the rivet root is prone to bend during riveting, which affects the assembly.
[0056] In summary, the riveting mold provided in this embodiment can, during the riveting of the riveting member 5 and the rivet 4, use the extrusion member 32 to simultaneously extrude, so that the radial pressure of the riveting edge in the riveting member 5 evenly wraps around the circumference of the rivet shank, thereby improving the riveting strength between the rivet and the riveting member 5 and significantly increasing the radial bending strength of the rivet after riveting.
[0057] In one embodiment, the riveting assembly 3 further includes a linkage 33 disposed in the receiving hole 31; the linkage 33 can be pressed by the rivet and move along the hole depth direction of the receiving hole 31, and simultaneously drive the pressing member 32 to move toward the center of the receiving hole 31.
[0058] Specifically, in combination Figure 1 and Figure 2In further detail, the riveting assembly 3 is also specifically provided with a linkage 33 located in the receiving hole 31. The linkage 33 can be pressed by the rivet and move along the depth direction of the receiving hole 31. Moreover, the linkage 33 can be specifically provided with a tapered contact surface for cooperating with the pressing member 32. Thus, when the riveting upper die 1 presses the rivet toward the riveting member 5, the rivet pushes the linkage 33 to move downward along the depth direction of the hole. The tapered inclined surface in the linkage 33 causes the pressing member 32 to shrink radially inward along the hole of the receiving hole 31, thereby realizing the function of pressing the riveting edge in the riveting member 5 and making it evenly wrap around the circumference of the rivet shank under radial pressure.
[0059] The specific arrangement of the linkage 33 can convert the vertical motion pressure of the riveting upper die 1 into the horizontal motion pressure along the diameter direction of the accommodating hole 31, and apply it to the extrusion member 32 simultaneously, so as to ensure that during the riveting process between the rivet and the riveting member 5, the riveting edge in the riveting member 5 can simultaneously wrap around the circumference of the rivet rod.
[0060] In one embodiment, the extrusion member 32 is hinged to the riveting assembly 3 via a hinge shaft, and a recessed slot 321 is provided in the extrusion side of the extrusion member 32; the linkage member 33 has a mating part 331 that is engaged in the recessed slot 321; when the linkage member 33 moves along the depth direction of the receiving hole 31, the mating part 331 can correspondingly extrude the recessed slot 321, and cause the extrusion member 32 to rotate and extrude around the hinge shaft toward the center of the receiving hole 31.
[0061] Specifically, in combination Figure 2 and Figure 3 In further detail, the middle part of the extrusion member 32 can be hinged to the riveting assembly 3 via a hinge shaft, so that the extrusion member 32 can move one end toward or away from the center of the receiving hole 31 by rotating around the hinge shaft.
[0062] Furthermore, the extrusion side of the extrusion member 32 is provided with a recessed slot 321, and the linkage member 33 has a mating part 331 that is engaged in the recessed slot 321. The mating part 331 can be specifically configured as a boss that is engaged in the recessed slot 321. In this way, when the linkage member 33 moves downward along the depth direction of the receiving hole 31, the mating part 331 can push the extrusion member 32 downward accordingly, so that the extrusion member 32 can rotate around the hinge axis and move one end of itself toward the center of the receiving hole 31 to extrude.
[0063] The specific arrangement of the extrusion member 32 and the linkage member 33 can form a lever mechanism, which amplifies the downward pressure of the linkage member 33 through the leverage effect, so that the extrusion member 32 can generate a larger extrusion force to extrude towards the center of the receiving hole 31.
[0064] In addition, the recessed notch 321 in the extrusion part 32 can also limit the downward stroke of the linkage part 33, and avoid the problem of excessive extrusion of the extrusion part 32 due to excessive downward movement of the linkage part 33, which would cause deformation and damage to the rivet or the rivet 5.
[0065] In one embodiment, along the depth direction of the receiving hole 31, one end of the recessed bayonet 321 forms a pressing edge 321a for pressing the riveting member 5, and the other end forms a retaining edge 321b for retaining the mating part 331.
[0066] Specifically, in combination Figure 2 and Figure 3 In further detail, along the depth direction of the receiving hole 31, one end of the recessed bayonet 321 is formed as a pressing edge 321a for pressing the riveting part 5. The side of the pressing edge 321a near the recessed bayonet 321 can be specifically set as an inclined surface that is inclined at an acute angle to the depth direction of the hole. In this way, the pressing edge 321a can form an edge wall with gradually thinning thickness, which facilitates the concentration of pressure on the edge of the riveting part 5. The other end of the recessed bayonet 321 is formed as a retaining edge 321b for the retaining mating part 331. The side of the retaining edge 321b near the recessed bayonet 321 can be specifically set as an inclined surface that is inclined at an acute angle to the depth direction of the hole. In this way, the retaining edge 321b and the mating part 331 can form a barb structure, thereby better limiting the downward stroke of the linkage 33.
[0067] The specific arrangement of the extrusion edge 321a and the stop edge 321b described above has the advantages of simple structure, ability to concentrate the extrusion force of the extrusion member 32, and limitation of the downward stroke of the linkage member 33.
[0068] In one embodiment, the riveting assembly 3 further includes an elastic member 34; one end of the elastic member 34 is connected to the riveting lower die 2, and the other end is connected to the extruder 32; the elastic member 34 can apply elastic force to the extruder 32 so that the recessed slot 321 tends to rotate away from the mating part 331; when the mating part 331 extrudes the recessed slot 321, the recessed slot 321 can overcome the elastic force of the elastic member 34 and rotate toward the center of the receiving hole 31.
[0069] Specifically, in combination Figure 2 and Figure 3In further detail, the riveting assembly 3 also includes a spring element 34, which can be specifically configured as a compression spring. One end of the spring element 34 is connected to the riveting lower die 2, and the other end is connected to the extrusion member 32. This allows the spring element 34 to apply a spring force towards the extrusion member 32, causing the recessed bayonet 321 to tend to rotate away from the mating part 331 under normal conditions. During riveting, the downward pressure of the linkage 33 temporarily overcomes the spring force of the spring element 34, driving the extrusion member 32 to retract and compress. After riveting is completed, the downward pressure of the linkage 33 disappears, the spring element 34 automatically resets, and drives the extrusion member 32 to expand outward.
[0070] The specific arrangement of the elastic element 34 ensures that the extrusion element 32 is in an outward expansion state under normal conditions, and that the extrusion element 32 can be automatically reset to the outward expansion state after riveting is completed, so as to facilitate the next riveting process.
[0071] In one embodiment, the riveting assembly 3 further includes a reset member 35; one end of the linkage member 33 is connected to the reset member 35 along the depth direction of the receiving hole 31; the reset member 35 is used to reset the linkage member 33 along the depth direction of the receiving hole 31 to the position before it was squeezed by the rivet.
[0072] Specifically, in combination Figure 2 and Figure 3 In further detail, a reset member 35 is also provided in the riveting assembly 3, and one end of the linkage member 33 is connected to the reset member 35 along the depth direction of the receiving hole 31. The reset member 35 can also be set as a compression spring. When riveting is performed, the downward pressure of the linkage member 33 temporarily overcomes the elastic force of the reset member 35, driving the extruder 32 to retract and extrude. After the riveting is completed, the downward pressure of the linkage member 33 disappears, and the reset member 35 pushes the linkage member 33 upward to rise and reset to the position before it was extruded by the rivet.
[0073] The specific arrangement of the aforementioned reset component 35 enables the linkage component 33 to rise and reset to its initial position after riveting is completed, which also facilitates the next riveting process and improves riveting efficiency.
[0074] In one embodiment, the riveting assembly 3 further includes an insert 36; the insert 36 is fixedly installed in the riveting lower die 2 and has a receiving hole 31 in itself; multiple extruders 32 are arranged in a ring array along the inner peripheral wall of the receiving hole 31; the linkage 33 is disposed at the center of the multiple extruders 32 and can synchronously drive the multiple extruders 32 to move radially toward the rivet along the receiving hole 31.
[0075] Specifically, in combination Figure 2 and Figure 3In further detail, the aforementioned insert 36 can be specifically configured as an annular body, and the receiving hole 31 can be concentrically arranged in the insert 36; the extruder 32 can be configured as a fan-shaped body arranged in an annular array along the inner peripheral wall of the receiving hole 31, so that it can be circumferentially arranged along the inner wall of the receiving hole 31, and multiple extruders 32 can simultaneously and synchronously move radially toward the rivet along the receiving hole 31 to extrude.
[0076] The specific arrangement of the riveting assembly 3 described above enables the extrusion members 32 to be arranged in a ring array and multiple extrusion members 32 to be extruded simultaneously and synchronously, so that all parts of the rivet rod periphery can be wrapped and extruded, avoiding local stress concentration.
[0077] In one embodiment, the insert 36 includes a first column section 361 and a second column section 362, and the diameter of the first column section 361 is larger than that of the second column section 362; the first column section 361 is embedded in the riveting lower mold 2, and a circular receiving hole 31 is formed by recessing the end face; the second column section 362 is located on the lower side of the first column section 361, and a through hole for receiving the riveting assembly 3 is correspondingly opened.
[0078] Specifically, in combination Figure 2 and Figure 3 In further detail, the insert 36 is specifically configured as a first column segment 361 and a second column segment 362, and the first column segment 361 and the second column segment 362 can be concentrically arranged to form an inverted stepped structure with a larger top and a smaller bottom. This can improve the installation stability of the insert 36 in the riveting lower mold 2, and the larger diameter first column segment 361 has a larger contact area with the riveting lower mold 2, which can better dissipate the heat during the riveting process.
[0079] In addition, this disclosure also provides a novel rivet 4, which can be used in conjunction with the above-mentioned riveting mold. It includes a rivet head 41 and a rivet shank 42. One end of the rivet shank 42 is connected to the rivet head 41, and the other end is provided with a connecting hole 421. A riveting portion 422 is also provided on the peripheral wall of the end of the rivet shank 42 near the rivet head 41. The riveting member 5 can be riveted and wrapped around the riveting portion 422 in a manner that is inclined toward the center of the rivet shank 42.
[0080] Specifically, in combination Figure 4In further detail, the new type of rivet 4 can be used in conjunction with the aforementioned riveting mold. The new type of rivet 4 includes a rivet head 41 and a rivet shank 42, and a riveting portion 422 is provided on the peripheral wall of the end of the rivet shank 42 near the rivet head 41. The riveting member 5 can be riveted and wrapped around the riveting portion 422 in an inclined manner toward the center of the rivet shank 42. This can improve the radial bending strength of the new type of rivet 4 after riveting and improve the riveting firmness between the new type of rivet 4 and the riveting member 5, thereby effectively solving the problem that the root of the rivet is easily skewed during riveting, which affects the assembly.
[0081] In one embodiment, a relief groove 423 is formed between the riveting portion 422 and the rivet head 41; along the direction away from the relief groove 423, the peripheral wall of the riveting portion 422 is provided as a conical wall inclined toward the center of the rivet shank 42.
[0082] Specifically, in combination Figure 4 In further detail, a relief groove 423 is formed between the riveting part 422 and the rivet head 41, and the peripheral wall of the riveting part 422 is set as a conical wall inclined towards the center of the rivet shank 42. In this way, when the edge of the riveting part 5 is riveted and fixed to the new type of rivet 4, the edge of the riveting part 5 can be narrowed and constricted along the peripheral wall of the riveting part 422, thereby further improving the radial bending strength of the new type of rivet 4 after riveting and improving the riveting firmness.
[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.
[0084] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A clinching die characterized in that, include: Rivet the upper mold (1); The lower die (2) is riveted and has a recessed riveting hole, and a riveting assembly (3) is provided in the riveting hole; The riveting assembly (3) includes a receiving hole (31) for receiving rivets and an extrusion member (32) disposed on the inner periphery of the receiving hole. The riveting die (1) can press the rivet and the riveting member (5) into the riveting assembly (3), and the extruder (32) can simultaneously extrude toward the center of the receiving hole (31) so that the riveting member (5) at least partially wraps around the periphery of the rivet.
2. The clinching die of claim 1, wherein, The riveting assembly (3) also includes a linkage (33) disposed in the receiving hole (31); The linkage (33) can be pressed by the rivet to move along the depth direction of the accommodating hole (31), and simultaneously drive the pressing member (32) to move toward the center of the accommodating hole (31).
3. The clinch die of claim 2, wherein, The extrusion member (32) is hinged to the riveting assembly (3) via a hinge shaft. The extrusion side of the extrusion member (32) is provided with a recessed slot (321); The linkage (33) has a mating part (331) that is engaged in the recessed slot (321); When the linkage (33) moves along the depth direction of the receiving hole (31), the mating part (331) can correspondingly squeeze the recessed slot (321) and cause the squeezing member (32) to rotate and squeeze around the hinge axis toward the center of the receiving hole (31).
4. The riveting die of claim 3, wherein Along the depth direction of the receiving hole (31), one end of the recessed mortise (321) forms a pressing edge (321a) for pressing the riveted part, and the other end forms a blocking edge (321b) for blocking the mating part (331).
5. The riveting die of claim 4, wherein, The riveting assembly (3) also includes a spring element (34); One end of the elastic member (34) is connected to the riveting lower die (2), and the other end is connected to the extrusion member (32); The elastic member (34) can apply elastic force to the extrusion member (32) so that the recessed latch (321) tends to rotate away from the mating part (331); When the mating part (331) presses against the recessed latch (321), the recessed latch (321) can overcome the elastic force of the elastic member (34) and rotate toward the center of the receiving hole (31).
6. The rivet die of claim 2, wherein, The riveting assembly (3) also includes a reset component (35); Along the depth direction of the receiving hole (31), one end of the linkage (33) is connected to the reset member (35); The reset member (35) is used to reset the linkage member (33) along the hole depth direction of the receiving hole (31) to the position before it was squeezed by the rivet.
7. The clinching die of any one of claims 2-6, wherein, The riveting assembly (3) also includes an insert (36); The insert (36) is fixedly installed in the riveting lower mold (2), and has the receiving hole (31) in itself; Multiple extrusion members (32) are arranged in a ring array along the inner peripheral wall of the receiving hole (31); The linkage (33) is located at the center of the plurality of extrusion members (32) and can synchronously drive the plurality of extrusion members (32) to move radially toward the rivet along the receiving hole (31).
8. The rivet die of claim 7, wherein, The insert (36) includes a first column segment (361) and a second column segment (362), and the diameter of the first column segment (361) is larger than that of the second column segment (362). The first column segment (361) is fitted into the riveting lower mold (2), and the end face is recessed to form the circular receiving hole (31); The second column segment (362) is located below the first column segment (361) and has a corresponding through hole for accommodating the riveting assembly (3).
9. A new rivet (4) capable of fitting into the riveting die according to any one of claims 1 to 8, characterized in that, Includes rivet head (41) and rivet shank (42); One end of the rivet rod (42) is connected to the rivet head (41), and the other end is provided with a connecting hole (421); The rivet rod (42) is also provided with a riveting part (422) at the end peripheral wall near the rivet head (41); The rivet can be riveted and wrapped around the rivet portion (422) in a manner that is inclined toward the center of the rivet shank (42).
10. A new rivet (4) according to claim 9, characterized in that: A relief groove (423) is formed between the riveting part (422) and the rivet head (41); Along the direction away from the relief groove (423), the peripheral wall of the riveting part (422) is configured as a conical wall inclined toward the center of the rivet rod (42).