Progressive die forming mechanism for rivet production and progressive die

Abstract

The utility model provides a progressive die forming mechanism for rivet production. The progressive die forming mechanism comprises a material belt, a punch forming assembly and a die core forming assembly. The material belt is provided with a plurality of to-be-stamped deformation areas in an extending mode. The punch forming assembly comprises a first punch piece, a second punch piece and a third punch piece. The mold core forming assembly comprises a first mold core part, a second mold core part and a third mold core part. The first punch piece and the first die core piece are aligned and punched, so that the top of the material strip in the corresponding to-be-punched deformation area protrudes out of a first deformation allowance convex part; and the second punch piece and the second die core piece are subjected to counterpoint punching, so that the first deformation allowance convex part is shrunk and deformed into a second deformation allowance convex part, the third punch piece and the third die core piece are subjected to counterpoint punching, so that a rivet cap of the sealing rivet is formed, and the rivet cap is connected to the material belt of the to-be-punched deformation area. Through progressive stamping deformation of the multiple stations, the stress in the to-be-stamped deformation area of the material belt has the opportunity to be released and distributed again, and therefore the residual stress level of the sealing rivet is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rivet production, in particular to a continuous die forming mechanism and a continuous die for rivet production. Background Art

[0002] In the manufacturing process of lithium batteries, rivet technology is used to manufacture the cover plates of battery cells. Rivets are inserted into the holes of the pressure plate, insulating plate, weak guide plate, base plate, retaining frame, sealing ring and other parts until the rivet pressing surface is flush with the pressure plate, making the rivet cylindrical thicker and its head expand, thus fastening the various parts together. More importantly, the use of sealing rivets ensures that the internal part of the battery is completely isolated from the external environment, which is one of the key measures to ensure battery safety and reliability.

[0003] At present, with the widespread application of lithium batteries, the safety performance of lithium batteries has received more and more attention from people. Therefore, the technical requirements for the production and manufacturing processes of various components of lithium batteries are very strict.

[0004] Among them, some manufacturers usually choose to use stamping dies to produce and manufacture sealing rivets. However, these manufacturers only use the forming mechanism of the stamping die to stamp the material strip once. Although this saves the production time of the sealing rivets, the end face of the rivet cap of the sealing rivet after stamping is prone to low flatness and a high residual stress level of the sealing rivet.

[0005] Therefore, there is an urgent need for a stamping mechanism or a stamping device that can improve the flatness of the end surface of the rivet cap and reduce the residual stress level of the sealing rivet after stamping. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a continuous die forming mechanism for rivet production that can effectively reduce the residual stress level of the sealing rivet and can make the end face of the rivet cap of the sealing rivet after stamping have better flatness.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A continuous die forming mechanism for rivet production, comprising:

[0009] A material strip is extended to have a plurality of deformation zones to be stamped;

[0010] The punch forming assembly includes a first punch member, a second punch member, and a third punch member, which are sequentially arranged along the material conveying direction; the first punch member, the second punch member, and the third punch member are all fixedly mounted on the upper die stamping seat; the forming end surface of the first punch member is provided with a first hourglass groove, the forming end surface of the second punch member is provided with a second hourglass groove, and the forming end surface of the third punch member is formed with a forming pressing plane;

[0011] The core molding assembly includes a first core piece, a second core piece, and a third core piece sequentially arranged along the conveying direction of the material belt; the first core piece, the second core piece, and the third core piece are all fixedly mounted on the lower die stamping seat; a first rivet deformation cavity is formed on the molding end surface of the first core piece, a second rivet deformation cavity is formed on the molding end surface of the second core piece, and a third rivet deformation cavity is formed on the molding end surface of the third core piece;

[0012] When each deformation zone to be punched moves to a first position along the conveying direction of the material strip, the first punch piece and the first core mold piece are counter-punched and punched, so that the top of the material strip of the corresponding deformation zone to be punched is raised with a first deformation allowance convex portion; when each deformation zone to be punched moves to a second position along the conveying direction of the material strip, the second punch piece and the second core mold piece are counter-punched and punched, so that the first deformation allowance convex portion is reduced and deformed into a second deformation allowance convex portion; when each deformation zone to be punched moves to a third position along the conveying direction of the material strip, the third punch piece and the third core mold piece are counter-punched and punched, so that the second deformation allowance convex portion is flattened to form a rivet cap of a sealing rivet, and the rivet cap is connected to the material strip of the corresponding deformation zone to be punched.

[0013] In one embodiment, a spherical air storage groove is further provided at the center of the bottom of the first hourglass groove;

[0014] The diameter of the notch of the spherical air storage groove ranges from 0.4 mm to 0.6 mm.

[0015] In one embodiment, a first ejector pin hole is formed at one end of the first mold core piece away from the molding end surface, and the first ejector pin hole is connected to the first rivet deformation cavity;

[0016] The core molding assembly also includes a first ejector component, which is located in the first ejector penetration hole and extends into the first rivet deformation cavity; the bottom of the first ejector component is elastically abutted against a first elastic component, and the end of the first elastic component facing away from the first ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

[0017] In one embodiment, a second ejector pin hole is formed at one end of the second mold core piece away from the molding end surface, and the second ejector pin hole is connected to the second rivet deformation cavity;

[0018] The core molding assembly also includes a second ejector component, which is located in the second ejector penetration hole and extends into the second rivet deformation cavity; the bottom of the second ejector component is elastically abutted against a second elastic component, and the end of the second elastic component facing away from the second ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

[0019] In one embodiment, a third ejector pin hole is formed at one end of the third mold core piece away from the molding end surface, and the third ejector pin hole is connected to the third rivet deformation cavity;

[0020] The core forming assembly also includes a third ejector component, which is located in the third ejector penetration hole and extends into the third rivet deformation cavity; the bottom of the third ejector component is elastically abutted against a third elastic component, and one end of the third elastic component facing away from the third ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

[0021] In one embodiment, a plurality of positioning holes are evenly distributed on both sides of the material strip along the extension direction of the material strip, and the plurality of positioning holes on the same side are linearly distributed.

[0022] In one embodiment, the first punch component, the second punch component and the third punch component are all integrally formed structures.

[0023] A continuous die comprises a continuous die forming mechanism for rivet production as described in any of the above embodiments, the continuous die also comprising an upper die blanking punch and a lower die blanking punch; the upper die blanking punch is fixedly mounted on the upper die stamping seat, the lower die blanking punch is fixedly mounted on the lower die stamping seat, the upper die blanking punch and the lower die blanking punch are aligned and punched to separate the rivet cap of the sealing rivet from the material strip in the deformation zone to be stamped.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] When the first punch piece and the first mold core piece are aligned for punching, the first hourglass groove squeezes the top of the material strip in the area to be punched and deformed, causing it to bulge out a first deformation allowance convex portion; when the second punch piece and the second mold core piece are aligned for punching, the second hourglass groove squeezes the first deformation allowance convex portion, causing it to gradually shrink and deform into a second deformation allowance convex portion; finally, the second deformation allowance convex portion is flattened by the forming pressing plane of the third punch piece. The continuous die forming mechanism of the utility model performs progressive punching deformation through multiple stations, so that the stress inside the area to be punched and deformed of the material strip has the opportunity to be released and distributed again, thereby effectively reducing the residual stress level of the sealing rivet; further effectively avoids the adverse effect of metal pulling on the end face of the rivet cap by the rivet rod forming part during the process of punching and forming the rivet rod, so that the end face of the rivet cap of the sealing rivet has better flatness after multiple progressive punching deformations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a continuous die forming mechanism for rivet production in one embodiment;

[0028] Figure 2 for Figure 1 A cross-sectional view of the AA section line of the continuous die forming mechanism for rivet production shown;

[0029] Figure 3 for Figure 2 A partial enlarged schematic diagram of the continuous die forming mechanism for rivet production shown in FIG.

[0030] Figure 4 for Figure 2 A partial enlarged schematic diagram of position B of a continuous die forming mechanism for rivet production is shown;

[0031] Figure 5 It is a structural diagram of the material strip;

[0032] Figure 6 It is a deformation process change diagram of the material strip in the deformation area to be stamped;

[0033] Figure 7 This is a photo of the finished product of the sealing rivet after blanking. DETAILED DESCRIPTION

[0034] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] See also Figures 1 to 6 In order to better understand the continuous die forming mechanism 10 for rivet production of the present application, the continuous die forming mechanism 10 for rivet production is further explained below:

[0038] A continuous die forming mechanism 10 for rivet production in one embodiment includes a material strip 100, a punch forming assembly 200, and a core forming assembly 300. The punch forming assembly 200 includes a first punch member 210, a second punch member 220, and a third punch member 230, which are sequentially arranged along the material strip conveying direction; the first punch member 210, the second punch member 220, and the third punch member 230 are all fixedly mounted on an upper die stamping seat (not shown), the forming end surface of the first punch member 210 is provided with a first hourglass groove 2101, the forming end surface of the second punch member 220 is provided with a second hourglass groove 2201, and the forming end surface of the third punch member 230 is formed with a forming pressing plane 2310; The core molding assembly 300 includes a first core mold piece 310, a second core mold piece 320, and a third core mold piece 330 sequentially arranged along the conveying direction of the material belt; the first core mold piece 310, the second core mold piece 320, and the third core mold piece 330 are all fixedly mounted on a lower die stamping seat (not shown); a first rivet deformation cavity 3101 is defined on the molding end surface of the first core mold piece 310, a second rivet deformation cavity 3201 is defined on the molding end surface of the second core mold piece 320, and a third rivet deformation cavity 3301 is defined on the molding end surface of the third core mold piece 330;

[0039] The first punch part 210 and the first mold core part 310 are counter-punched and punched, so that the top of the corresponding material strip 100 of the deformation zone 110 to be punched is raised with a first deformation allowance convex portion; the second punch part 220 and the second mold core part 320 are counter-punched and punched, so that the first deformation allowance convex portion is reduced and deformed into a second deformation allowance convex portion; the third punch part 230 and the third mold core part 330 are counter-punched and punched, so that the second deformation allowance convex portion is flattened to form a rivet cap of a sealing rivet, and the rivet cap is connected to the material strip 100 of the deformation zone 110 to be punched.

[0040] When each deformation zone 110 to be punched moves to the first position along the material conveying direction, the first punch piece 210 and the first core mold piece 310 are pressed in alignment, so that the top of the material strip 100 of the corresponding deformation zone 110 to be punched is raised with a first deformation allowance convex portion; when each deformation zone 110 to be punched moves to the second position along the material conveying direction, the second punch piece 220 and the second core mold piece 320 are pressed in alignment, so that the first deformation allowance convex portion is reduced and deformed into a second deformation allowance convex portion; when each deformation zone 110 to be punched moves to the third position along the material conveying direction, the third punch piece 230 and the third core mold piece 330 are pressed in alignment, so that the second deformation allowance convex portion is flattened to form a rivet cap of a sealing rivet, and the rivet cap is connected to the material strip 100 of the corresponding deformation zone 110 to be punched.

[0041] It is necessary to add that, if Figures 2 to 4As shown, the above-mentioned first position is the stamping processing station between the first punch part 210 and the first core mold part 310 that are relatively arranged; the above-mentioned second position is the stamping processing station between the second punch part 220 and the second core mold part 320 that are relatively arranged; the above-mentioned third position is the stamping processing station between the third punch part 230 and the third core mold part 330 that are relatively arranged.

[0042] In addition, if Figure 6 As shown, the first deformation allowance convex portion and the second deformation allowance convex portion are located in the deformation area 110 to be punched on the material strip 100 during the deformation process.

[0043] In this embodiment, when the first punch member 210 and the first mold core member 310 are pressed in position, the first hourglass groove 2101 will squeeze the top of the material strip 100 in the deformation zone 110 to be punched, causing it to bulge out the first deformation allowance convex portion; when the second punch member 220 and the second mold core member 320 are pressed in position, the second hourglass groove 2201 will squeeze the first deformation allowance convex portion, causing it to gradually shrink and deform into the second deformation allowance convex portion; finally, the second deformation allowance convex portion is flattened by the forming pressure plane 2310 of the third punch member 230. The continuous die forming mechanism of the present invention performs progressive stamping deformation through multiple workstations, so that the stress inside the to-be-stamped deformation zone 110 of the material strip 100 has the opportunity to be released and redistributed, thereby effectively reducing the residual stress level of the sealing rivet; further effectively avoids the adverse effect of metal pulling on the end face of the rivet cap by the rivet rod forming part during the stamping and forming process of the rivet rod, so that the end face of the rivet cap of the sealing rivet has better flatness after multiple progressive stamping deformations.

[0044] It should be noted that the working principle of the continuous die and the working principle of conveying the material strip 100, as well as the working principle of the continuous die and the material strip conveyor (not shown) cooperating with each other to complete the stamping of the material strip 100 are all technical means well known to those skilled in the art, so they will not be described in detail here. Figure 2 As shown, the direction of the X arrow is the conveying direction of the material strip 100 .

[0045] like Figures 1 to 5 As shown, in one embodiment, a spherical air storage groove 2102 is further provided at the center of the bottom of the first hourglass groove 2101; the diameter of the groove of the spherical air storage groove 2102 ranges from 0.4 mm to 0.6 mm.

[0046] It can be understood that in the process of the first deformation allowance protrusion protruding, the spherical air storage groove 2102 can play the role of accommodating air, thereby effectively avoiding the problem of compressed air between the outer wall of the first deformation allowance protrusion and the inner wall of the first hourglass groove 2101, thereby facilitating the formation of the first deformation allowance protrusion; further, the formation of the first deformation allowance protrusion can provide more metal stretching allowance for the next stamping processing station, that is, effectively ensuring that when the second punch part 220 and the second mold core part 320 are in position for stamping, the second punch part 220 can gradually squeeze the material strip 100 of the deformation zone 110 to be stamped into the second rivet deformation cavity 3201 without affecting the flatness of the end face of the rivet cap.

[0047] like Figures 1 to 2 As shown, in one embodiment, a first ejector pin hole 3102 is provided at one end of the first core mold part 310 away from the molding end face, and the first ejector pin hole 3102 is connected to the first rivet deformation cavity 3101; the core mold assembly 300 also includes a first ejector pin 340, the first ejector pin 340 is located in the first ejector pin hole 3102, and the first ejector pin 340 extends into the first rivet deformation cavity 3101; the bottom of the first ejector pin 340 is elastically abutted against a first elastic member, and the end of the first elastic member away from the first ejector pin 340 is elastically abutted against the bottom of the core mounting groove of the lower mold stamping seat (not shown).

[0048] It should be noted that the first elastic member can be a rubber spring or a metal spring. In this embodiment, the first elastic member is a metal spring.

[0049] It can be understood that when the first punch member 210 and the first core mold member 310 are being aligned for stamping, the formed end surface of the first punch member 210 squeezes and fills the material strip 100 of the deformation zone 110 to be stamped into the first rivet deformation cavity 3101, so that the material strip 100 extruded and filled in the first rivet deformation cavity 3101 pushes the formed end of the first ejector member 340, so that the first ejector member 340 will move downward as a whole to compress the metal spring; when the first punch member 210 and the first core mold member 310 complete the alignment stamping, that is, when the first punch member 210 and the first core mold member 310 are reset respectively, the elastic restoring force of the metal spring will lift up the first ejector member 340, so that the formed end of the first ejector member 340 quickly lifts up the rivet rod part of the sealing rivet in the first rivet deformation cavity 3101, thereby helping the material strip 100 to continue to be conveyed along the direction of the X arrow to prepare for the alignment stamping processing of the next workstation.

[0050] like Figures 1 to 2As shown, in one embodiment, a second ejector pin hole 3202 is provided at one end of the second core member 320 away from the molding end face, and the second ejector pin hole 3202 is connected to the second rivet deformation cavity 3201; the core molding assembly 300 also includes a second ejector pin 350, the second ejector pin 350 is located in the second ejector pin hole 3202, and the second ejector pin 350 extends into the second rivet deformation cavity 3201; the bottom of the second ejector pin 350 is elastically abutted against a second elastic member, and the end of the second elastic member away from the second ejector pin 350 is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat (not shown).

[0051] It is understandable that the working principles of the second mold core member 320, the second ejector member 350 and the elastic member are the same as those of the first mold core member 310, the first ejector member 340 and the metal spring, so they will not be described in detail here.

[0052] like Figures 1 to 2 As shown, in one embodiment, a third ejector pin hole is provided at one end of the third core member 330 away from the molding end face, and the third ejector pin hole is connected to the third rivet deformation cavity 3301; the core molding assembly 300 also includes a third ejector member 360, and the third ejector member 360 is located in the third ejector pin hole, and the third ejector member 360 extends into the third rivet deformation cavity 3301; the bottom of the third ejector member 360 is elastically abutted against a third elastic member, and the end of the third elastic member away from the third ejector member 360 is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat (not shown).

[0053] It is understandable that the working principles of the third mold core member 330 , the third ejector member 360 and the elastic member are the same as those of the first mold core member 310 , the first ejector member 340 and the metal spring, so they will not be described in detail here.

[0054] It should be noted that, in order to ensure that the elastic restoring force of the metal spring lifts the first ejector member 340, thereby enabling the first ejector member 340 to relatively smoothly eject the rivet shank portion of the sealing rivet, in another embodiment, a spacer or washer is further provided between the metal spring and the first ejector member 340. Similarly, a spacer or washer is further provided between the second ejector member 350 and the corresponding metal spring, and between the third ejector member 360 and the corresponding metal spring.

[0055] like Figure 5 As shown, in one embodiment, the material strip 100 has a plurality of positioning holes 101 evenly distributed on both sides along the extension direction of the material strip 100 , and the plurality of positioning holes 101 on the same side are linearly distributed.

[0056] It can be understood that the positioning hole 101 is used to cooperate with the guide column provided on the upper die stamping seat (not shown) to effectively correct the fixed-distance movement accuracy of the material strip 100, thereby effectively ensuring the positioning stamping accuracy of each workstation, and further making the end face of the stamped rivet cap have better flatness.

[0057] like Figure 1 As shown, in one embodiment, the first punch member 210, the second punch member 220 and the third punch member 230 are all integrally formed structures. In one embodiment, the first mold core member 310, the second mold core member 320 and the third mold core member 330 are all integrally formed structures.

[0058] It can be understood that each stamping component adopting an integrally formed structure has better structural strength support, which can ensure the forming quality of each stamping component during the aligning stamping.

[0059] See also Figures 1 to 6 The present application also provides a continuous die, including the continuous die forming mechanism 10 for rivet production described in any of the above embodiments, the continuous die also including an upper die blanking punch 400 and a lower die blanking punch 500; the upper die blanking punch 400 is fixedly installed on the upper die stamping seat (not shown in the figure), and the lower die blanking punch 500 is fixedly installed on the lower die stamping seat (not shown in the figure), and the upper die blanking punch 400 and the lower die blanking punch 500 are aligned and punched to separate the rivet cap of the sealing rivet from the material strip in the deformation area to be stamped.

[0060] In this embodiment, the progressive die is progressively stamped and deformed through multiple stations, allowing the stress in the to-be-stamped deformation zone of the material strip to be released and redistributed, thereby effectively reducing the residual stress level of the sealing rivet. This further effectively avoids the adverse effect of metal pulling on the end face of the rivet cap by the rivet shank forming portion during the stamping and forming process, resulting in the end face of the rivet cap of the sealing rivet having better flatness after multiple progressive stamping deformations. Furthermore, the upper die blanking punch and the lower die blanking punch are aligned and stamped to achieve blanking of the rivet.

[0061] Compared with the prior art, the present invention has at least the following advantages:

[0062] When the first punch piece and the first mold core piece are aligned for punching, the first hourglass groove squeezes the top of the material strip in the area to be punched and deformed, causing it to bulge out a first deformation allowance convex portion; when the second punch piece and the second mold core piece are aligned for punching, the second hourglass groove squeezes the first deformation allowance convex portion, causing it to gradually shrink and deform into a second deformation allowance convex portion; finally, the second deformation allowance convex portion is flattened by the forming pressing plane of the third punch piece. The continuous die forming mechanism of the utility model performs progressive punching deformation through multiple stations, so that the stress inside the area to be punched and deformed of the material strip has the opportunity to be released and distributed again, thereby effectively reducing the residual stress level of the sealing rivet; further effectively avoids the adverse effect of metal pulling on the end face of the rivet cap by the rivet rod forming part during the process of punching and forming the rivet rod, so that the end face of the rivet cap of the sealing rivet has better flatness after multiple progressive punching deformations.

[0063] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A continuous die forming mechanism for rivet production, characterized in that: include: A material strip is extended to have a plurality of deformation zones to be stamped; The punch forming assembly includes a first punch member, a second punch member, and a third punch member, which are sequentially arranged along the material conveying direction; the first punch member, the second punch member, and the third punch member are all fixedly mounted on the upper die stamping seat; the forming end surface of the first punch member is provided with a first hourglass groove, the forming end surface of the second punch member is provided with a second hourglass groove, and the forming end surface of the third punch member is formed with a forming pressing plane; The core molding assembly includes a first core piece, a second core piece, and a third core piece sequentially arranged along the conveying direction of the material belt; the first core piece, the second core piece, and the third core piece are all fixedly mounted on the lower die stamping seat; a first rivet deformation cavity is formed on the molding end surface of the first core piece, a second rivet deformation cavity is formed on the molding end surface of the second core piece, and a third rivet deformation cavity is formed on the molding end surface of the third core piece; When each deformation zone to be punched moves to a first position along the conveying direction of the material strip, the first punch piece and the first core mold piece are counter-punched and punched, so that the top of the material strip of the corresponding deformation zone to be punched is raised with a first deformation allowance convex portion; when each deformation zone to be punched moves to a second position along the conveying direction of the material strip, the second punch piece and the second core mold piece are counter-punched and punched, so that the first deformation allowance convex portion is reduced and deformed into a second deformation allowance convex portion; when each deformation zone to be punched moves to a third position along the conveying direction of the material strip, the third punch piece and the third core mold piece are counter-punched and punched, so that the second deformation allowance convex portion is flattened to form a rivet cap of a sealing rivet, and the rivet cap is connected to the material strip of the corresponding deformation zone to be punched.

2. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: A spherical air storage groove is also provided at the center of the bottom of the first hourglass groove; The diameter of the notch of the spherical air storage groove ranges from 0.4 mm to 0.6 mm.

3. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: A first ejector pin hole is formed at one end of the first mold core piece away from the molding end surface, and the first ejector pin hole is connected to the first rivet deformation cavity; The core molding assembly also includes a first ejector component, which is located in the first ejector penetration hole and extends into the first rivet deformation cavity; the bottom of the first ejector component is elastically abutted against a first elastic component, and the end of the first elastic component facing away from the first ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

4. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: A second ejector pin hole is formed at one end of the second mold core piece away from the molding end surface, and the second ejector pin hole is connected to the second rivet deformation cavity; The core molding assembly also includes a second ejector component, which is located in the second ejector penetration hole and extends into the second rivet deformation cavity; the bottom of the second ejector component is elastically abutted against a second elastic component, and the end of the second elastic component facing away from the second ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

5. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: A third ejector pin hole is formed at one end of the third mold core piece away from the molding end surface, and the third ejector pin hole is connected to the third rivet deformation cavity; The core forming assembly also includes a third ejector component, which is located in the third ejector penetration hole and extends into the third rivet deformation cavity; the bottom of the third ejector component is elastically abutted against a third elastic component, and one end of the third elastic component facing away from the third ejector component is elastically abutted against the bottom of the core mounting groove of the lower die stamping seat.

6. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: A plurality of positioning holes are evenly distributed on both sides of the material strip along the extension direction of the material strip, and the plurality of positioning holes on the same side are linearly distributed.

7. The continuous die forming mechanism for rivet production according to claim 1, characterized in that: The first punch component, the second punch component and the third punch component are all integrally formed structures.

8. A continuous die, characterized in that: A continuous die forming mechanism for rivet production comprising the continuous die forming mechanism according to any one of claims 1 to 7, wherein the continuous die further comprises an upper die blanking punch and a lower die blanking punch; the upper die blanking punch is fixedly mounted on the upper die stamping seat, and the lower die blanking punch is fixedly mounted on the lower die stamping seat, and the upper die blanking punch and the lower die blanking punch are aligned and punched to separate the rivet cap of the sealing rivet from the material strip in the deformation zone to be stamped.

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