CN219766582U - Self-punching riveting die and self-punching riveting equipment - Google Patents

Abstract

The utility model relates to a self-piercing riveting die and self-piercing riveting equipment, comprising: the riveting die comprises a riveting die base, wherein the top surface of the riveting die base is inwards recessed along the riveting direction to form a cavity, and the plate to be riveted is riveted in the cavity; and at least one wing portion extending outwardly from the rivet die base in the first direction; and the wing portions are coplanar with the top surface of the rivet die base. The self-punching riveting die and the self-punching riveting equipment can improve the situation of riveting cracking.

Description

Self-punching riveting die and self-punching riveting equipment

Technical Field

The utility model relates to the technical field of battery assembly, in particular to a self-punching riveting die and self-punching riveting equipment.

Background

Self-piercing riveting, namely Self-Piercing Riveting, simply called SPR riveting, is a mechanical cold forming connecting process for connecting two or more metal or non-metal material plates through an SPR Self-piercing riveter; particularly in the technical field of battery assembly, self-piercing riveting utilizes the plastic large deformation of plates to form a mechanical internal lock to achieve the purpose of connecting a piece to be riveted, so that the self-piercing riveting is gradually applied to structural connection of a PACK battery PACK shell, a battery module shell and the like.

Because the extensibility of the material in the plate to be riveted is higher, when the extensibility of the plate to be riveted is lower or the crimping force is overlarge, the riveting cracking phenomenon is easy to occur.

Disclosure of Invention

Based on this, it is necessary to provide a self-piercing riveting die and a self-piercing riveting apparatus to improve the condition of riveting cracking.

The first aspect of the utility model provides a self-punching riveting die, which is used for continuously processing a plate to be riveted, wherein the plate to be riveted and the self-punching riveting die move relatively along a first direction; the self-piercing riveting die comprises:

the riveting die comprises a riveting die base, wherein the top surface of the riveting die base is inwards recessed along the riveting direction to form a cavity, and the plate to be riveted is riveted in the cavity;

and at least one wing portion extending outwardly from the rivet die base in the first direction; and the wing portions are coplanar with the top surface of the rivet die base.

In one embodiment, in a second direction, the width of the wing portion is no greater than the width of the rivet die base; wherein the first direction, the second direction, and the staking direction intersect each other.

In one embodiment, the self-piercing riveting die comprises at least two wing parts, and at least one wing part is arranged on two opposite sides of the riveting die base along the first direction.

In one embodiment, the wings on opposite sides of the rivet die base along the first direction are symmetrically disposed.

In one embodiment, the area where the riveting die base is connected with the wing part adopts a smooth curved surface.

In one embodiment, the cavity is a bowl-shaped cavity with a small bottom and a large opening.

In one embodiment, the self-piercing riveting die comprises a mounting rod which is arranged on the bottom surface of the riveting die base, which faces away from the die cavity, along the riveting direction.

A second aspect of the present utility model provides a self-piercing riveting apparatus comprising the self-piercing riveting die described above.

In one embodiment, the self-piercing riveting apparatus includes a base supported below the die base.

In one embodiment, the self-piercing riveting apparatus includes a connecting arm and a self-piercing rivet; the lower end of the connecting arm is connected with the base, the upper end of the connecting arm is connected with the self-punching rivet head, and the self-punching rivet head can press the plate to be riveted into the cavity for riveting; the plane of the connecting arm is perpendicular to the first direction.

Advantageous effects

According to the self-punching riveting die and the self-punching riveting equipment, a riveting die base and at least one wing part are arranged; the wing parts are flush with the top surface of the riveting die base, so that when the plate to be riveted is placed on the riveting die base, the part of the plate to be riveted can be contacted with the wing parts, the stress area of the plate to be riveted is increased, the pressure intensity is reduced, and the situation that the plate to be riveted is cracked in the riveting process is reduced; and outwards extend from riveting die base along first direction through setting up the wing portion for the wing portion can not interfere other structures of self-piercing riveting equipment, gives the space that waits to rivet the panel and enough advance in first direction, in this space, wait that the bottom of riveting the panel homoenergetic is supported jointly by riveting die base and wing portion, makes things convenient for waiting to rivet the panel and carry out the multiple spot riveting along first direction on self-piercing riveting die.

Drawings

Fig. 1 is a schematic structural diagram of a self-piercing riveting die according to an embodiment of the utility model.

Fig. 2 is a schematic cross-sectional view of a self-piercing riveting die according to an embodiment of the utility model.

Fig. 3 is a top view of a self-piercing riveting die according to one embodiment of the utility model.

Fig. 4 is a top view of a self-piercing riveting die according to another embodiment of the utility model.

Fig. 5 is a top view of a self-piercing riveting die according to yet another embodiment of the utility model.

Fig. 6 is a top view of a self-piercing riveting apparatus according to another embodiment of the utility model.

Fig. 7 is a G-G cross-sectional view of the self-piercing riveting apparatus shown in fig. 6.

Fig. 8 is a schematic diagram of a self-piercing riveting apparatus according to an embodiment of the present utility model, in which the connecting arm is omitted.

In each figure, the arrow direction indicated by X is a first direction, the arrow direction indicated by Y is a second direction, and the arrow direction indicated by Z is a caulking direction.

Reference numerals illustrate:

the riveting die comprises a riveting die base (10), a die cavity (11), wing parts (20), a mounting rod (30), a locating surface (31), a plate to be riveted (90), an upper plate (91), a lower plate (92), a self-punching riveting die (100), a base (200), a mounting hole (210), a locating piece (220), a locating groove (230), a connecting arm (300) and a self-punching rivet head (400).

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of the embodiments of the present utility model, these terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance or order of number of features, particular order, or order of primary or secondary relationships of such features.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the terms "plurality" and "a plurality" mean at least two (including two), such as two, three, etc., unless specifically defined otherwise. Similarly, the terms "plurality of sets" and "plurality of sets" when present refer to more than two sets (including two sets), and the terms "plurality of sheets" when present refer to more than two sheets (including two sheets).

In the description of the embodiments of the present utility model, if there are such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counter-clockwise", "axial", "radial", "circumferential", etc., these terms refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In describing embodiments of the present utility model, unless otherwise explicitly indicated and limited thereto, the terms "mounted," "connected," "secured," and the like should be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and various fields such as aerospace and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The present inventors have noted that the battery is connected to the structure such as the battery pack case, the battery module case, etc., by self-piercing riveting (hereinafter, referred to as SPR riveting) during mass production. The SPR riveting is a novel plate cold working connection technology, utilizes plastic large deformation of plates to form a mechanical inner lock to achieve the purpose of connecting the plates, has the characteristics of environmental friendliness, high connection strength, good fatigue resistance and the like, can realize the composite connection requirements of steel, aluminum, metal, nonmetal and the like, has few impurities in the riveting process, and is very suitable for the assembly production of battery shells. When the to-be-riveted plate of the front battery shell is subjected to SPR riveting, the to-be-riveted plate is subjected to multipoint continuous stamping, and the self-punching riveting die is required to give off in the advancing direction of the to-be-riveted plate, so that the size cannot be enlarged at will; in order to control the overall quality of the battery, the size of the plate to be riveted cannot be changed, so that the design of the self-punching riveting die is more limited, and the plate to be riveted is cracked due to the small stress area of the bottom.

In order to alleviate the problem of cracking of the plate to be riveted, the applicant researches and discovers that corresponding stressed wing parts can be designed on the self-punching riveting die along the relative advancing direction of the plate to be riveted and the self-punching riveting die, so that continuous riveting of the plate to be riveted is not interfered, the stressed area of the plate to be riveted can be increased, and the cracking condition of the plate to be riveted is effectively improved.

A first aspect of the present utility model provides a self-piercing riveting die 100; the self-piercing riveting die is used for continuously processing the plate 90 to be riveted, the plate 90 to be riveted and the self-piercing riveting die 100 move relatively along a first direction, and the self-piercing riveting die 100 can rivet multiple points on the plate 90 to be riveted along the first direction.

The sheet material to be riveted 90 includes at least one upper sheet material 91 and at least one lower sheet material 92. The riveting die base 10 is used for being matched with other parts of a self-piercing riveting device to fixedly rivet and connect an upper plate 91 and a lower plate 92 of a plate 90 to be riveted. It should be understood that since the deformation amount of the lower plate 92 at the time of caulking is larger, the phenomenon of bottom cracking easily occurs when the ductility of the lower plate 92 is low.

According to some embodiments of the present utility model, referring to fig. 1 to 8, a self-piercing riveting die 100 includes: a die base 10 and at least one wing 20.

The top surface of the riveting die base 10 is concaved inwards along the riveting direction to form a cavity 11, and the plate 90 to be riveted is riveted in the cavity 11.

The die pad 10 is used to withstand impact pressure from other components of the self-piercing riveting apparatus and may be of a relatively high load bearing material such as carbon steel, stainless steel or other cemented carbide.

The top surface of the die base 10 is formed in a plane for placing the sheet material 90 to be riveted. The cavity 11 is a cavity having an opening on the top surface, and is typically formed by recessing from the top surface of the riveting die base 10, that is, the riveting die base 10 is provided with a pre-groove recessed downward. The cavity 11 is disposed in the top surface center area of the riveting die base 10, when the plate 90 to be riveted is riveted, the plate 90 to be riveted is deformed under force, and meanwhile, is pressed into the cavity 11, and the upper plate 91 and the lower plate 92 of the plate 90 to be riveted are extruded under the action of the force, so that a firm riveting buckle is finally formed. The depth of the cavity 11 determines the protruding height of the rivet, and the shape of the cavity 11 determines the shape of the rivet. The bottom wall of the cavity 11 may be a plane or an arc surface, and accordingly, the outer surface of the riveted buckle formed by riveting is a corresponding plane or an arc surface, and the shape of the corresponding cavity 11 may be set according to the shape requirement of the riveted buckle, for example, the cross section of the cavity 11 may be a circle, a square or other polygons, which is not limited in the utility model.

The wing 20 extends outwardly from the die base 10 in a first direction; and the wing 20 is coplanar with the top surface of the rivet die base 10. By arranging the wing parts 20, the wing parts 20 are flush with the top surface of the riveting die base 10, so that when the plate 90 to be riveted is placed on the riveting die base 10, part of the plate 90 to be riveted can be contacted with the wing parts 20, the stress area of the plate 90 to be riveted is increased, especially the stress area of the lower plate 92 is increased, the pressure is reduced, and the situation that the lower plate 92 of the plate 90 to be riveted is cracked is effectively reduced; and by providing the wing portions 20 to extend outwardly from the die base 10 in the first direction so that the wing portions 20 do not interfere with other structures of the self-piercing riveting apparatus, such as the connecting arms 300 (mentioned below), a space is given to the sheet material 90 to be riveted for sufficient travel in the first direction, in which space the bottom of the sheet material 90 to be riveted can be supported by the die base 10 together with the wing portions 20, facilitating multi-point riveting of the sheet material 90 to be riveted on the self-piercing riveting die 100 in the first direction.

Alternatively, the lower plate 92 may be a cast aluminum plate, and the upper plate 91 may be a cast aluminum plate or an aluminum alloy plate.

According to some embodiments of the present utility model, as shown with reference to fig. 1-5, the width of the wing portion 20 in the second direction is no greater than the width of the rivet die base 10 in the second direction, that is, the width B of the wing portion 20 in the second direction is no greater than the width C of the rivet die base 10. Wherein the first direction, the second direction and the riveting direction intersect each other.

In this way, the wing portion 20 can be prevented from interfering with other structures of the self-piercing riveting apparatus, so that the plate 90 to be riveted is ensured to be subjected to a larger stress area only in the first direction, and the plate 90 to be riveted is conveniently riveted at multiple points on the self-piercing riveting die 100 along the first direction.

In general, the angle between the first direction, the second direction, and the riveting direction in the embodiment of the present utility model may be 90 °, and may also be an intersection angle close to 90 °. The direction of staking is typically vertical, but in some embodiments, staking may be performed in a horizontal direction.

It should be understood that the die base 10 may be a cylinder, and the lengths of the die base 10 in all directions are equal, and the width C along the second direction is the diameter. In other embodiments, the die base 10 may be a directional body, which is not limited herein.

According to some embodiments of the present utility model, referring to fig. 1 to 5, the length a of the wing 20 in the first direction is generally less than twice the length D of the cavity 11 in the first direction, so that the wing 20 can be prevented from being excessively large and taking up more space.

According to some embodiments of the present utility model, referring to FIGS. 1-5, the wing 20 has a length A in the first direction of 5 mm.ltoreq.A.ltoreq.25 mm; and can be designed to be 10mm-20mm according to the field processing condition.

According to some embodiments of the present utility model, the self-piercing riveting die 100 includes at least two wings 20, and at least one wing 20 is provided on each of opposite sides of the riveting die base 10 in the first direction.

As shown in fig. 2, at least one wing portion 20 is respectively arranged on two sides of the riveting die base 10 along the first direction, when the plate 90 to be riveted is riveted on the self-piercing riveting die 100 along the first direction, no matter from left to right or from right to left, the stress area can be increased through the wing portions 20, so that the pressure is reduced, and the situation that the lower plate 92 of the plate 90 to be riveted is cracked in the riveting process is reduced.

According to some embodiments of the present utility model, as shown in connection with fig. 1, 2 and 5, the wing portions 20 located on opposite sides of the rivet die base 10 in the first direction are symmetrically arranged; in this way, the plate 90 to be riveted is conveniently riveted back and forth in multiple points along the first direction on the self-piercing riveting die 100; in the process of reciprocating riveting, the stress pressure conditions of the bottoms of the plates to be riveted 90 are consistent, so that the riveting consistency of the plates to be riveted 90 can be improved.

It should be noted that, depending on the apparatus, the site, or the specific shape of the sheet material 90 to be riveted, the wing portions 20 located on opposite sides of the riveting die base 10 in the first direction may also be designed separately. As shown in connection with fig. 4, the left wing 20 may be hemispherical + square, and the right wing 20 may be square of a shorter length, as is designed, but the line connecting the wings 20 on both sides should extend in the first direction to ensure that it does not interfere with other structures of the self-piercing riveting apparatus and to give the sheet material 90 to be riveted sufficient space to travel in the first direction.

According to some embodiments of the present utility model, as shown in fig. 1 to 5, the top surface of the wing portion 20 may have a rectangular, semicircular or diamond shape, or may have other shapes extending along the first direction, which is not limited herein, specifically, according to the design.

According to some embodiments of the present utility model, as shown in fig. 3, the plate 90 to be riveted is riveted on the self-piercing riveting die 100 only in the first direction at multiple points, and the self-piercing riveting die 100 may also be provided with a wing portion 20 only on the right side of the riveting die base 10, so that the structure can be simplified, and the overall cost can be reduced.

According to some embodiments of the present utility model, the riveting die base 10 and the wing portion 20 are integrally connected, and the riveting die base and the wing portion may be integrally formed by casting or may be integrally fixed by welding. In this way, the riveting die base 10 and the wing portion 20 have high connection strength, so that the self-punching riveting die 100 can bear high impact pressure conveniently.

According to some embodiments of the present utility model, referring to fig. 1 to 5, the region where the rivet die base 10 is connected to the wing portion 20 is excessively curved with smooth surfaces; preventing the sheet material 90 to be riveted from forming an indentation in the region where the die base 10 and the wing portion 20 are connected, resulting in an unsightly appearance.

According to some embodiments of the present utility model, as shown in fig. 1 to 5, the cavity 11 is a bowl-shaped cavity with a small bottom and a large mouth; and the riveting is convenient, and the die is smoothly removed.

Wherein the depth from the top opening of the cavity 11 to the bottom surface of the cavity is E, and E is generally more than or equal to 0.5mm and less than or equal to 3mm, and the actual design is specific. The side wall of the cavity 11 is a smooth curved surface and is inclined outwards; the angle of inclination may be 95-120.

Specifically, the connection between the side wall of the cavity 11 and the bottom surface of the cavity should be over-rounded, and the connection between the side wall of the cavity 11 and the top opening should be over-rounded; r is more than or equal to 0.1mm and less than or equal to 0.3mm, and R can be specifically selected to be 0.2mm.

According to some embodiments of the present utility model, referring to fig. 1 and 2, the self-piercing riveting die 100 includes a mounting bar 30, and the mounting bar 30 is disposed on a bottom surface of the riveting die base 10 facing away from the cavity 11 along the riveting direction, so that the self-piercing riveting die 100 is conveniently fixed to an external structure.

Alternatively, the mounting rod 30 is integrally connected with the riveting die base 10, and the mounting rod and the riveting die base can be integrally formed through casting or can be integrally fixed through welding. In this way, the riveting die base 10 and the mounting rod 30 have high connection strength, so that the self-punching riveting die 100 can bear high impact pressure conveniently.

A second aspect of the present utility model provides a self-piercing riveting apparatus comprising the self-piercing riveting die 100 described above.

According to some embodiments of the present utility model, referring to fig. 5 to 8, the self-piercing riveting apparatus includes a base 200, the base 200 being supported below the die base 10.

The base 200 may be formed with a mounting hole 210, and the mounting bar 30 is inserted into the mounting hole 210.

The end of the mounting bar 30 remote from the die base 10 is formed with a locating surface 31. The base 200 includes a positioning member 220 disposed in the mounting hole 210, and the positioning member 220 abuts against the positioning surface 31.

Specifically, the positioning member 220 may be a tightening screw, and the positioning member 220 is laterally disposed on the base 200 and protrudes into the mounting hole 210. The positioning surface 31 can be a flat inclined surface designed on the mounting rod 30, and the end of the positioning piece 220 can be propped against the flat inclined surface, so that the positioning piece 220 can be ensured to be more firmly abutted against the positioning surface 31.

According to some embodiments of the present utility model, the top surface of the base 200 is supported below the rivet die base 10 and the wing 20; the upper self-piercing die 400 gives a certain impact pressure to the self-piercing die 100, and the impact pressure is dispersed and transmitted to the base 200 by the die base 10 and the wing parts 20.

According to some embodiments of the present utility model, referring to fig. 8, a positioning groove 230 adapted to the rivet die base 10 and the wing portion 20 is formed on the base 200. The self-piercing riveting die 100 is placed on the base 200 and can be circumferentially positioned through the positioning groove 230, so that the angle of the self-piercing riveting die 100 cannot be changed in the process of multi-point riveting on the plate 90 to be riveted along the first direction by the self-piercing riveting equipment, the wing part 20 can be ensured to provide stressed support for the plate 90 to be riveted along the first direction, the stressed area is increased, and the cracking risk is reduced.

According to some embodiments of the present utility model, referring to fig. 8, the mounting hole 210 extends downward from the bottom of the positioning groove 230; the depth of the mounting hole 210 should be greater than the length of the mounting bar 30.

According to some embodiments of the present utility model, referring to fig. 6 to 8, a self-piercing riveting apparatus includes a connecting arm 300 and a self-piercing rivet 400.

The lower end of the connecting arm 300 is connected with the base 200, the upper end of the connecting arm 300 is connected with the self-punching rivet 400, and the self-punching rivet 400 can press the plate 90 to be riveted into the cavity 11 for riveting.

The whole connecting arm 300 can be in a C-shaped structure, and connecting wires at two ends of the connecting arm 300 are arranged along the riveting direction. The plane of the connecting arm 300 is perpendicular to the first direction; in this way, the connecting arm 300 can be ensured to be connected with the base 200 along the second direction, the distance between the connecting arm 300 and the riveting die base 10 reaches the maximum, interference between the wing part 20 and the connecting arm 300 is avoided, and reliable riveting of the self-piercing riveting device is ensured.

During the riveting process, the plate material 90 to be riveted is pressed into the cavity 11 by the punching force of the self-punching rivet head 400 to rivet the plate material 90 to be riveted.

During riveting, the self-punching rivet head 400 descends along the riveting direction, pretensions the plate 90 to be riveted with the riveting die base 10, and fixes the position of the plate 90 to be riveted so as to prevent the plate 90 to be riveted from moving in the riveting process. Then, the self-punching rivet head 400 continues to press the upper plate 91 and the lower plate 92 of the plate 90 to be riveted into the cavity 11 of the riveting die base 10, the plate 90 to be riveted deforms in the cavity 11 along with the increase of pressure, and the upper plate 91 and the lower plate 92 form an inlaid structure, namely a riveting buckle, and the pressure of the self-punching rivet head 400 is relaxed and returns.

According to some embodiments of the present utility model, the self-piercing rivet 400 may be configured in a cylindrical shape, and the quality of the connection of the riveted joint formed after riveting is uniformly distributed, which is beneficial to improving the connection strength of the riveted joint. The bottom surface of the self-piercing rivet 400 may be adapted to the cavity 11, i.e. the two shapes should be similar, so that the plate 90 to be riveted can be deformed in the cavity 11 smoothly, however, the self-piercing rivet 400 may also have other shapes, such as a cuboid or a truncated cone, and the utility model is not limited thereto.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A self-piercing riveting die (100) for continuously processing a sheet material (90) to be riveted, the sheet material (90) to be riveted and the self-piercing riveting die (100) being relatively moved in a first direction; the self-piercing riveting die (100) is characterized by comprising:

the riveting die comprises a riveting die base (10), wherein a die cavity (11) is formed by inwards recessing the top surface of the riveting die base (10) along the riveting direction, and the plate (90) to be riveted is riveted in the die cavity (11);

and at least one wing (20), the wing (20) extending outwardly from the die base (10) in the first direction; and the wing (20) is coplanar with the top surface of the rivet die base (10).

2. The self-piercing riveting die (100) of claim 1, wherein in a second direction, the width of the wing portion (20) is no greater than the width of the riveting die base (10);

wherein the first direction, the second direction, and the staking direction intersect each other.

3. The self-piercing riveting die (100) according to claim 1 or 2, characterized in that the self-piercing riveting die (100) comprises at least two of the wings (20), at least one of the wings (20) being provided on opposite sides of the riveting die base (10) in the first direction.

4. A self-piercing riveting die (100) as claimed in claim 3, characterized in that the wings (20) on opposite sides of the riveting die base (10) along the first direction are symmetrically arranged.

5. The self-piercing riveting die (100) according to claim 1 or 2, characterized in that the region of the riveting die base (10) connected to the wing (20) is overcurved with a smooth surface.

6. The self-piercing riveting die (100) as claimed in claim 1 or 2, characterized in that the cavity (11) is a bowl-shaped cavity with a small bottom and a large mouth.

7. The self-piercing riveting die (100) according to claim 1 or 2, characterized in that the self-piercing riveting die (100) comprises a mounting bar (30), which mounting bar (30) is arranged in the riveting direction on a bottom surface of the riveting die base (10) facing away from the die cavity (11).

8. A self-piercing riveting apparatus comprising a self-piercing riveting die (100) as claimed in any one of claims 1 to 7.

9. The self-piercing riveting apparatus of claim 8, characterized in that the self-piercing riveting apparatus comprises a base (200), the base (200) being supported below the riveting die base (10).

10. The self-piercing riveting apparatus of claim 9, wherein the self-piercing riveting apparatus comprises a connecting arm (300) and a self-piercing rivet (400); the lower end of the connecting arm (300) is connected with the base (200), the upper end of the connecting arm (300) is connected with the self-punching rivet head (400), and the self-punching rivet head (400) can press the plate (90) to be riveted into the cavity (11) for riveting; the plane of the connecting arm (300) is perpendicular to the first direction.