Riveting device for cylindrical battery

Abstract

A riveting device for a cylindrical battery is disclosed. The riveting device for a cylindrical battery includes a guide pin to improve assembly defects when assembling a rivet with a gasket and when assembling a rivet-gasket assembly with a can. The riveting device for a cylindrical battery according to an embodiment of the present invention arranges the central axis line of the gasket, the central axis line of the rivet, the central axis line of the can, and the central axis line of the guide pin on the same line when assembling the rivet with the gasket and when assembling the rivet-gasket assembly with the can.

Description

Riveting device for cylindrical batteries

[0001] The present invention relates to a riveting device used in manufacturing a cylindrical battery.

[0002] In general, secondary batteries are classified into cylindrical and prismatic batteries, in which the electrode assembly is built into a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is built into a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.

[0003] Cylindrical batteries typically include a cylindrical can, rivets, and gaskets.

[0004] During the manufacturing process of a cylindrical battery, a rivet is combined with a gasket. Then, a rivet-gasket assembly comprising the rivet and gasket is fastened to a central hole formed on one side of the can.

[0005] During the process of joining the rivet and gasket, the centers of the rivet and gasket may not match or the gasket may be tilted, resulting in assembly failure.

[0006] In addition, during the process of joining the rivet-gasket assembly with the center hole of the can, assembly defects may occur due to poor rivet-gasket assembly and poor tolerance with the can.

[0007] These assembly defects need to be improved as they degrade the quality and durability of secondary batteries.

[0008] Korean Patent Publication No. 10-2023-0078926 (publication date: June 5, 2023) proposes a riveting structure for electrode terminals, but this aims to improve the electrode terminal structure of a battery cell to increase space efficiency within a battery can, and does not propose a method for improving the aforementioned assembly defects.

[0009] The purpose of the present invention is to provide a riveting device for a cylindrical battery that improves assembly defects of a rivet and a gasket and improves assembly defects of a rivet-gasket assembly and a can.

[0010] The above-described object of the present invention is achieved by the specific contents described below.

[0011] A riveting device for a cylindrical battery according to an embodiment of the present invention comprises a gasket, a guide pin, and a rivet. The gasket has a through hole formed in its center. The guide pin is inserted into the through hole of the gasket. The rivet is seated on one side of the guide pin and is coupled with the gasket. The gasket is movable along the guide pin. In addition, when the gasket and the rivet are coupled, the central axis of the gasket, the central axis of the rivet, and the central axis of the guide pin are arranged on the same line.

[0012] A riveting device for a cylindrical battery according to an embodiment of the present invention includes a gasket guide. The gasket guide has a central hole formed in its center, and a guide pin is inserted into the central hole. The gasket guide moves along the guide pin to support the gasket.

[0013] Specifically, a gasket mounting portion on which a gasket is mounted is formed on one side of the gasket guide.

[0014] A riveting device for a cylindrical battery according to an embodiment of the present invention includes a rivet guide. The rivet guide secures a rivet to one side of a guide pin. The rivet guide moves toward one end of the guide pin so that one end of the guide pin is inserted into the center groove of the rivet.

[0015] Specifically, when one end of the guide pin is inserted into the center groove of the rivet, the rivet guide moves toward the guide pin and presses the rivet and the guide pin. By pressing the rivet guide, the rivet and the guide pin move in one direction, and the rivet moves and engages with the gasket.

[0016] Specifically, the edge of one end of the guide pin is formed with a slope.

[0017] Specifically, a rivet mounting portion for mounting a rivet is formed on one side of the rivet guide.

[0018] Specifically, the side surface of the rivet mounting portion is formed to be inclined.

[0019] A riveting device for a cylindrical battery according to an embodiment of the present invention includes a can, a guide pin, and a rivet assembly. The can has an open end and a central hole formed in the other end. One end of the guide pin is inserted into the can through one end of the can and then passes through the central hole formed in the other end of the can to be exposed to the outside. The rivet assembly is secured to one end of the guide pin and is coupled with the central hole of the can. The rivet assembly is a combination of a rivet and a gasket. When the central hole of the can and the rivet assembly are coupled, the central axis of the rivet assembly, the central axis of the can, and the central axis of the guide pin are arranged on the same line.

[0020] Specifically, a riveting device for a cylindrical battery according to an embodiment of the present invention includes a pressurizing portion. The pressurizing portion seats a rivet assembly on one side of a guide pin and presses the rivet assembly. In addition, the pressurizing portion moves toward one end of the guide pin so that one end of the guide pin is inserted into the central groove of the rivet.

[0021] Specifically, when one end of the guide pin is inserted into the center groove of the rivet, the pressurizing member moves toward the guide pin and presses the rivet assembly and the guide pin. By the pressurizing of the pressurizing member, the rivet assembly and the guide pin move in one direction, and the rivet assembly moves and engages with the center hole of the can.

[0022] Specifically, an assembly mounting portion is formed on one side of the pressurized portion, on which a rivet assembly is mounted.

[0023] Specifically, the side surface of the assembly mounting portion is formed to be inclined.

[0024] A riveting device for a cylindrical battery according to an embodiment of the present invention has a guide pin, thereby having the effect of improving assembly defects when assembling a rivet and a gasket and when assembling a rivet-gasket assembly and a can.

[0025] More detailed effects of the riveting device for a cylindrical battery of the present invention are described in the form for implementing the invention below.

[0026] Figure 1 shows the process of assembling a gasket and a rivet.

[0027] Figure 2 shows the gasket and rivet being assembled.

[0028] Figure 3 shows areas A and B shown in Figure 2.

[0029] Figure 4 shows the process of assembling the rivet assembly and the can.

[0030] Figure 5 shows (a) of Figure 4 in detail.

[0031] Figure 6 shows (b) of Figure 4 in detail.

[0032] Figure 7 shows the rivet guide loading (adsorbing) the rivet.

[0033] Figure 8 shows the pressurizing part loading (adsorbing) the rivet assembly.

[0034] Hereinafter, examples of embodiments of the present invention will be described in more detail with reference to the attached drawings. For components of the present invention that are clearly understandable and easily reproducible by those skilled in the art using conventional techniques, a detailed description thereof will be omitted so as not to obscure the gist of the present invention.

[0035] The attached drawings are only provided to facilitate understanding of examples of embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings.

[0036] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0037] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0038] Hereinafter, a riveting device for a cylindrical battery according to an example of an embodiment of the present invention will be described.

[0039] In general, secondary batteries are classified into cylindrical and prismatic batteries, in which the electrode assembly is built into a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is built into a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.

[0040] Cylindrical batteries typically include a cylindrical can, rivets, and gaskets.

[0041] The can houses the electrode assembly inside.

[0042] The rivet is fastened into a center hole formed in the can.

[0043] The gasket is joined to the rivet and seals the gap between the rivet and the center hole of the can.

[0044] Hereinafter, the 'riveting device for a cylindrical battery according to an example of an embodiment of the present invention' may be simply referred to as 'the riveting device of the present invention'.

[0045] Figure 1 shows the process of assembling a gasket (10) and a rivet (40).

[0046] Referring to FIG. 1, the riveting device of the present invention includes a gasket (10), a guide pin (20), and a gasket guide (30).

[0047] A gasket (10) is placed between the can (70) and the rivet (40) to fill the gap between the can (70) and the rivet (40).

[0048] The gasket (10) can be formed of various materials such as various synthetic resins or metals.

[0049] The gasket (10) is formed in a ring shape.

[0050] The gasket (10) includes a gasket body (11) and a gasket wing (12).

[0051] The gasket body (11) has a preset length in one direction (e.g., the up-down direction in Fig. 1).

[0052] A through hole (13) (see Fig. 2) is formed in the center of the gasket (10) (specifically, the gasket body (11)). The through hole (13) is a hole that penetrates the gasket body (11) in one direction. In other words, the gasket body (11) corresponds to the body of the gasket (10) surrounding the through hole (13).

[0053] A through hole (13) is located inside the cross-sectional shape of the gasket body (11). Here, the cross-sectional shape refers to the shape of a cross-section when the gasket body (11) is cut in a direction orthogonal to one direction (e.g., the up-down direction in Fig. 1).

[0054] In the cross-sectional shape of the gasket body (11), the center point of the through hole (13) is positioned on the center axis line (Z line) of the gasket body (11) (e.g., line Z in Fig. 1).

[0055] The central axis (Z-line) of the gasket body (11) represents a line passing through the center of the through hole (13) in a direction perpendicular to the radial direction of the through hole (13) (in one direction, for example, the up-down direction in Fig. 1). The central axis (Z-line) of the gasket body (11) may be the central axis (Z-line) of the gasket (10).

[0056] The gasket wing (12) is connected to the gasket body (11) and is formed on one side of the gasket body (11).

[0057] The gasket wing (12) is formed with a preset length from one side of the gasket body (11) to the radial outer side of the gasket (10) (specifically, the gasket body (11)).

[0058] The gasket wing (12) is formed on one edge of the gasket body (11) and is formed in a ring shape along the edge.

[0059] The gasket (10) is movably connected to the guide pin (20).

[0060] The guide pin (20) aligns the centers of the rivet (40) and the gasket (10).

[0061] That is, the guide pin (20) is arranged so that the center of the rivet (40) and the gasket (10) is placed on the vertical center axis (Z line) of the guide pin (20) during the process of fastening the rivet (40) and the gasket (10).

[0062] The guide pin (20) is formed in a rod shape with a preset length in one direction.

[0063] The cross-sectional shape of the guide pin (20) corresponds to the shape of the through hole (13) of the gasket (10). Here, the cross-sectional shape represents the shape of the cut surface when the guide pin (20) is cut in a direction orthogonal to the longitudinal direction of the guide pin (20).

[0064] The guide pin (20) is arranged in one direction (e.g., the up-down direction in Fig. 1) in the riveting device of the present invention. At this time, the longitudinal direction of the guide pin (20) coincides with the one direction.

[0065] The guide pin (20) includes one side (21) and the other side (22) opposite the one side (21) (see Fig. 1). The one side (21) and the other side (22) of the guide pin (20) point to opposite sides in the longitudinal direction.

[0066] The guide pin (20) has a central axis line (Z line). The central axis line (Z line) refers to a line passing through the center of the guide pin (20) in the longitudinal direction of the guide pin (20).

[0067] The guide pin (20) is coupled with the gasket (10). That the guide pin (20) is coupled with the gasket (10) indicates that the guide pin (20) is inserted and placed into the through hole (13) of the gasket (10).

[0068] Specifically, one side (21) (e.g., the upper side in FIG. 1) of the guide pin (20) penetrates the through hole (13) of the gasket (10) and is placed in the through hole (13).

[0069] When the guide pin (20) is combined with the gasket (10) (one side (21) of the guide pin (20) is inserted and placed into the through hole (13) of the gasket (10)), the central axis line (Z line) of the gasket (10) and the central axis line (Z line) of the guide pin (20) are placed on the same line.

[0070] In addition, when the guide pin (20) is combined with the gasket (10), there is no space (gap) between the outer surface of the guide pin (20) and the inner surface of the gasket (10) (specifically, the gasket body (11)). However, the gasket (10) can slide along the guide pin (20).

[0071] In detail, when the outer surface of the guide pin (20) and the inner surface of the gasket (10) are in contact with each other, the gasket (10) can move along the guide pin (20).

[0072] Accordingly, even if the gasket (10) is coupled to the guide pin (20), it does not tilt in one rotational direction, and the central axis (Z line) of the gasket (10) and the central axis (Z line) of the guide pin (20) are arranged on the same line.

[0073] In this way, the guide pin (20) aligns the center (or central axis (Z line)) of the gasket (10) to the center (or central axis (Z line)) of the guide pin (20).

[0074] Meanwhile, the edge of one end of the guide pin (20) is tapered along the edge (see Fig. 3). Accordingly, the edge of one end of the guide pin (20) is formed with an inclined surface (211a) along the circumferential direction. The one end of the guide pin (20) refers to the end of one side (21) of the guide pin (20).

[0075] In other words, the edge of one end of the guide pin (20) is formed in a tapered shape. Accordingly, the edge of one end of the guide pin (20) is tapered along the circumferential direction, forming an inclined surface (211a).

[0076] The cross-sectional diameter of one side (21) of the guide pin (20) increases from one end of the guide pin (20) to the other side (22).

[0077] The inclined surface (211a) formed on the edge of one end of the guide pin (20) is formed with a preset length from one end of the guide pin (20) toward the other end (22).

[0078] Due to this, one end of the guide pin (20) is easily inserted into the through hole (13) of the gasket (10) and the center groove (411) of the rivet (40) described later.

[0079] According to an example of an embodiment of the present invention, one side (21) of the guide pin (20) may include a plurality of inclined surfaces (211a, 213a) (see FIG. 3).

[0080] That is, a plurality of inclined surfaces (211a, 213a) may be formed on one side (21) of the guide pin (20). The inclined surfaces (211a, 213a) are formed in a circumferential direction along the edge of one side (21) of the guide pin (20). The inclined surfaces (211a, 213a) represent surfaces formed by tapering the edge of one side (21) of the guide pin (20).

[0081] As a plurality of inclined surfaces (211a, 213a) are formed on one side (21) of the guide pin (20), one side (21) of the guide pin (20) is easily inserted into the through hole (13) of the gasket (10) and the center groove (411) of the rivet (40).

[0082] In addition, one side (21) of the guide pin (20) supports the rivet (40) when the rivet (40) and the gasket (10) are combined, and guides the outer surface of the rivet (40) to move along the inner surface of the through hole (13) of the gasket (10).

[0083] Below, an example of an implementation state in which two inclined surfaces (211a, 213a) are formed is described.

[0084] One side (21) of the guide pin (20) can be divided into a first section (211), a second section (212), a third section (213), and a fourth section (214) that are sequentially connected from one end to the other end.

[0085] The first section (211) is a section in which an inclined surface (first inclined surface) (211a) is formed. That is, in the first section (211), the edge of one end of the guide pin (20) is formed to be inclined along the circumferential direction.

[0086] The first section (211) is formed with a preset length from one end of the guide pin (20) to the other end.

[0087] In the first section (211), the cross-sectional diameter of the guide pin (20) increases from one end to the other end.

[0088] The second section (212) is connected to the first section (211), and no slope is formed.

[0089] The second section (212) is formed with a predetermined length in the other direction from the boundary between the first section (211) and the second section (212).

[0090] In the second section (212), the cross-sectional diameter of the guide pin (20) is constant.

[0091] The third section (213) is connected to the second section (212) and is a section in which an inclined surface (second inclined surface) (213a) is formed. That is, the outer surface (or outer circumference) of the third section (213) is formed to be inclined along the circumferential direction. The third section (213) is formed with a predetermined length in the other direction from the boundary between the second section (212) and the third section (213).

[0092] In the third section (213), the cross-sectional diameter of the guide pin (20) increases from the boundary between the second section (212) and the third section (213) toward the other side.

[0093] The fourth section (214) is connected to the third section (213), and no slope is formed.

[0094] The fourth section (214) is formed with a predetermined length in the other direction from the boundary between the third section (213) and the fourth section (214).

[0095] In the fourth section (214), the cross-sectional diameter of the guide pin (20) is constant.

[0096] In the fourth section (214), the cross-sectional diameter of the guide pin (20) is formed to be larger than the cross-sectional diameter of the guide pin (20) in the second section (212).

[0097] The gasket guide (30) guides the movement of the gasket (10) and supports the gasket (10).

[0098] The gasket guide (30) includes one side (31) (e.g., the upper side in FIG. 1) and the other side (32) opposite to the one side (31) (e.g., the lower side in FIG. 1).

[0099] Additionally, the gasket guide (30) includes a center hole (33). The center hole (33) is a hole that penetrates one side (31) and the other side (32).

[0100] A center hole (33) is located inside the cross-sectional shape of the gasket guide (30). The cross-sectional shape of the gasket guide (30) represents the shape of the cross-section when the gasket guide (30) is cut in a direction orthogonal to one direction (e.g., the up-down direction in Fig. 1).

[0101] In the cross-sectional shape of the gasket guide (30), the center point of the center hole (33) is placed on the center axis line (Z line) of the gasket guide (30) (for example, line Z in Fig. 1).

[0102] The central axis line (Z line) of the gasket guide (30) represents a line passing through the center of the central hole (33) in a direction perpendicular to the radial direction of the central hole (33) (in one direction, for example, the up-down direction in Fig. 1).

[0103] The gasket guide (30) is coupled with the guide pin (20). That the gasket guide (30) is coupled with the guide pin (20) means that the guide pin (20) is inserted and positioned in the center hole (33) of the gasket guide (30).

[0104] When the gasket guide (30) is combined with the guide pin (20) (when the guide pin (20) is inserted and positioned in the center hole (33) of the gasket guide (30)), there is no space (gap) between the outer surface of the guide pin (20) and the inner surface of the gasket guide (30). However, the gasket guide (30) can slide along the guide pin (20). The inner surface of the gasket guide (30) refers to a surface surrounding the center hole (33).

[0105] In detail, when the outer surface of the guide pin (20) and the inner surface of the gasket guide (30) are in contact with each other, the gasket guide (30) can move along the guide pin (20).

[0106] When the gasket guide (30) is combined with the guide pin (20), the gasket guide (30) is placed below the gasket (10). That is, the gasket (10) combined with the guide pin (20) is placed above, and the gasket guide (30) is placed below the gasket (10) (Fig. 1 (a)).

[0107] In the guide pin (20), the gasket guide (30) can move toward the gasket (10) to support the gasket (10). In addition, the gasket guide (30) can guide the movement of the gasket (10) by moving while supporting the gasket (10) by coming into contact with the gasket (10) (Fig. 1 (b)).

[0108] When the gasket guide (30) is combined with the guide pin (20), the central axis (Z line) of the gasket (10), the central axis (Z line) of the gasket guide (30), and the central axis (Z line) of the guide pin (20) are arranged on the same line.

[0109] Accordingly, the guide pin (20) aligns the center (or central axis (Z-line)) of the gasket (10) and the center (or central axis (Z-line)) of the gasket guide (30) to the center (or central axis (Z-line)) of the guide pin (20).

[0110] Meanwhile, a gasket mounting portion (311) is formed on one side (31) of the gasket guide (30).

[0111] A gasket (10) is mounted on the gasket mounting portion (311).

[0112] The gasket mounting portion (311) is formed in a groove shape.

[0113] Specifically, the gasket mounting portion (311) is formed by being sunk to a preset depth from one side (31) of the gasket guide (30) toward the other side (32).

[0114] The gasket mounting portion (311) is formed in a circumferential direction along the edge of the central hole (33). That is, the gasket mounting portion (311) is formed in a ring shape.

[0115] The gasket mounting portion (311) may be formed by two interconnected grooves (311a, 311b), as illustrated in Fig. 1. The two grooves (311a, 311b) may be referred to as a first groove (311a) and a second groove (311b).

[0116] The first groove (311a) is formed by recessing from one side (31) of the gasket guide (30) toward the other side (32) to a preset depth.

[0117] The second groove (311b) is formed on the bottom surface of the first groove (311a). Specifically, the second groove (311b) is formed by being sunken from the bottom surface of the first groove (311a) toward the other surface (32) to a preset depth.

[0118] In addition, the radius of the second groove (311b) is formed narrower than the radius of the first groove (311a). The radius represents the distance from the central axis (Z line) of the gasket guide (30) to the edge of the first groove (311a) or the second groove (311b) in the direction (radial direction) perpendicular to the central axis (Z line).

[0119] A gasket wing (12) is accommodated in the first groove (311a), and a gasket body (11) is accommodated in the second groove (311b).

[0120] Alternatively, the gasket mounting portion (311) may be formed as a single groove (311a), as illustrated in FIG. 2. This single groove (311a) may be referred to as a third groove (311a). The drawing symbol (311a) of the third groove is identical to the drawing symbol (311a) of the first groove.

[0121] The third groove (311a) is formed by recessing from one side (31) of the gasket guide (30) toward the other side (32) to a preset depth.

[0122] A gasket body (11) is accommodated in the third groove (311a), and a gasket wing (12) is placed on one side (31) of a gasket guide (30).

[0123] In addition, the riveting device of the present invention includes a rivet (40) and a rivet guide (50).

[0124] The rivet (40) is combined with the gasket (10).

[0125] The rivet (40) includes a rivet body (41) and a rivet wing (42).

[0126] A rivet body (41) includes one side (e.g., the upper side in FIG. 1), a side opposite to the one side (e.g., the lower side in FIG. 1), and a side surface connecting the one side and the other side. The side surface may be referred to as an outer surface or an outer side surface.

[0127] The rivet body (41) is inserted into the through hole (13) of the gasket (10).

[0128] When the rivet (40) is combined with the gasket (10), the outer surface of the rivet body (41) comes into contact with the inner surface (or inner circumference) of the gasket (10) (specifically, the gasket body (11)) surrounding the through hole (13) of the gasket (10) (specifically, the gasket body (11)).

[0129] The rivet body (41) has a preset length in one direction (e.g., the up-down direction in FIG. 1).

[0130] The central axis line (Z-line) of the rivet body (41) represents a line passing through the center of the rivet body (41) in one direction (e.g., the up-down direction in FIG. 1). The central axis line (Z-line) of the rivet body (41) may be the central axis line (Z-line) of the rivet (40).

[0131] The rivet body (41) includes a center groove (411). That is, a center groove (411) is formed in the rivet body (41).

[0132] The center groove (411) is formed on the other surface (e.g., the lower surface in FIG. 1) of the rivet body (41).

[0133] The center groove (411) is formed by being sunken to a preset depth in the direction from the lower surface (bottom) to one surface (for example, the upper surface in FIG. 1).

[0134] The rivet body (41) includes a groove side wall (411a) surrounding a center groove (411) and a groove bottom surface (411b) corresponding to the bottom surface of the center groove (411).

[0135] For example, as shown in FIGS. 1 to 3, when the center groove (411) is formed by being sunk to a preset depth from the lower surface of the rivet body (41) toward the upper surface, the opening of the center groove (411) is located at the bottom, and the groove bottom surface (411b) of the rivet body (41) is located at the top.

[0136] One side (21) (specifically, one end) of the guide pin (20) is inserted into the center groove (411).

[0137] In an example embodiment in which two inclined surfaces (211a, 213a) are formed on one side (21) of the guide pin (20), when one side (21) of the guide pin (20) is inserted into the center groove (411), the first section (211) and the second section (212) of the one side (21) of the guide pin (20) are inserted into the center groove (411). That is, the center groove (411) of the rivet (40) accommodates the first section (211) and the second section (212) of the guide pin (20) (see (a) of FIG. 3).

[0138] By means of the first inclined surface (211a) formed in the first section (211) of the guide pin (20), one end of the guide pin (20) is easily inserted into the center groove (411).

[0139] And, when one end of the guide pin (20) is inserted into the center groove (411) (when insertion is completed), the outer surface (or outer circumference) of the second section (212) of the guide pin (20) comes into contact with the inner surface (or inner circumference) of the center groove (411). Accordingly, the second section (212) of the guide pin (20) supports the inner surface (or inner circumference) of the center groove (411). Since the inner surface (or inner circumference) of the center groove (411) represents the inner surface (or inner circumference) of the groove side wall (411a), the second section (212) of the guide pin (20) supports the groove side wall (411a) of the rivet body (41).

[0140] In addition, when one end of the guide pin (20) is inserted into the center groove (411) (when insertion is completed), the end of the groove side wall (411a) of the rivet body (41) is positioned on the third section (213) of the guide pin (20).

[0141] That is, the end of the groove side wall (411a) of the rivet body (41) is positioned on the second inclined surface (213a) formed in the third section (213) of the guide pin (20) (see (a) of FIG. 3). The second inclined surface (213a) of the guide pin (20) supports the end of the groove side wall (411a).

[0142] In addition, even if the home side wall (411a) moves downward, the end of the home side wall (411a) can easily move along the second inclined surface (213a), thereby preventing the entire home side wall (411a) from bending.

[0143] Meanwhile, a groove (named 'bottom groove (411c)') is formed on the groove bottom surface (411b) (bottom surface of the center groove (411)) of the rivet body (41). The bottom groove (411c) is formed in a ring shape along the edge of the groove bottom surface (411b).

[0144] The bottom groove (411c) reduces the contact area between one end of the guide pin (20) and the groove bottom surface (411b), so that the guide pin (20) can be easily separated from the rivet (40).

[0145] That is, when the rivet (40) is combined with the guide pin (20), the groove bottom (411b) located in the center of the bottom groove (411c) among the groove bottoms (411b) comes into contact with one end of the guide pin (20), so that the rivet (40) is sufficiently supported by one end of the guide pin (20).

[0146] And, after the rivet (40) is combined with the gasket (10), when the guide pin (20) is separated from the rivet (40), the guide pin (20) is easily separated from the rivet (40) by the bottom groove (411c).

[0147] The rivet wing (42) is connected to the rivet body (41) and is formed on one side of the rivet body (41).

[0148] The rivet wing (42) is formed with a preset length from one side of the rivet body (41) to the radial outer side of the rivet (40) (specifically, the rivet body (41)).

[0149] The rivet wing (42) is formed on one edge of the rivet body (41) and is formed in a ring shape along the edge.

[0150] The rivet (40) is aligned by the guide pin (20).

[0151] The central axis (Z-line) of the rivet (40) (or rivet body (41)) is arranged on the central axis (Z-line) of the guide pin (20) during the process of fastening the rivet (40) and the guide pin (20) and during the process of fastening the rivet (40) and the gasket (10). At this time, the central axis (Z-line) of the rivet (40), the central axis (Z-line) of the gasket (10), and the central axis (Z-line) of the guide pin (20) are arranged on the same line.

[0152] When one side (21) of the guide pin (20) is inserted into the center groove (411) of the rivet body (41), the groove side wall (411a) of the rivet body (41) moves along the inclined surface (211a) formed on one side (21) of the guide pin (20), so that the center of the rivet body (41) (or the center groove (411)) moves and is placed on the center axis line (Z line) of the guide pin (20).

[0153] That is, the central axis (Z line) of the rivet (40) (or rivet body (41)) is placed on the central axis (Z line) of the guide pin (20). As a result, the guide pin (20) aligns the center (or central axis (Z line)) of the rivet (40) with the center (or central axis (Z line)) of the guide pin (20).

[0154] And, when fastening the rivet (40) and the gasket (10), the central axis (Z line) of the rivet (40) and the gasket (10) is placed on the central axis (Z line) of the guide pin (20), so that the rivet (40) and the gasket (10) are aligned on the central axis (Z line) of the guide pin (20).

[0155] The rivet (40) can be combined with the rivet guide (50). At this time, the rivet guide (50) can be combined with the rivet (40) by vacuum-absorbing the rivet wing (42).

[0156] The rivet guide (50) moves the rivet (40) after being combined with the rivet (40) and also combines the rivet (40) with the guide pin (20).

[0157] The rivet guide (50) is combined with the rivet (40) by vacuum suction.

[0158] The rivet guide (50) moves to adsorb the rivet (40), and while the rivet (40) is adsorbed, the center groove (411) of the rivet (40) moves to a position facing one end of the guide pin (20) (Fig. 1 (a)).

[0159] Then, the rivet guide (50) moves toward one end of the guide pin (20) so that one end of the guide pin (20) is inserted into the center groove (411) of the rivet (40) (Fig. 1 (c)). By inserting one end of the guide pin (20) into the center groove (411) of the rivet (40), the rivet (40) and the guide pin (20) are coupled to each other.

[0160] At this time, a gasket guide (30) is coupled to the guide pin (20), and a gasket (10) is seated on the gasket seating portion (311) of the gasket guide (30).

[0161] When one end of the guide pin (20) is inserted into the center groove (411) of the rivet (40), the rivet guide (50) moves toward the guide pin (20) and presses the rivet (40) and the guide pin (20) (see Fig. 2).

[0162] By the pressure of the rivet guide (50), the rivet (40) and the guide pin (20) move in one direction (e.g., downward in FIG. 1) (see (b) of FIG. 3). At this time, the gasket (10) and the gasket guide (30) do not move.

[0163] Accordingly, the rivet (40) absorbed into the rivet guide (50) is combined with the gasket (10).

[0164] Specifically, the rivet body (41) is inserted into the through hole (13) of the gasket (10) (specifically, the gasket body (11)). The outer surface of the rivet body (41) is in contact with the inner surface (or inner circumference) of the gasket (10) surrounding the through hole (13) of the gasket (10).

[0165] When the rivet body (41) is inserted into the through hole (13) of the gasket (10), the outer surface of the rivet body (41) presses the inner surface of the gasket (10) (see (b) of FIG. 3).

[0166] Due to this, the gasket body (11) surrounding the through hole (13) of the gasket (10) is stretched (elastically deformed) radially outwardly of the gasket (10). Since the elastic force of the gasket body (11) is applied to the rivet body (41), the outer surface of the rivet body (41) and the inner surface of the gasket (10) are in close contact and sealed.

[0167] A space of a preset volume can be formed in the gasket mounting portion (311) formed in the gasket guide (30) so that the gasket body (11) can extend outward in the radial direction of the gasket (10).

[0168] In the process of fastening the rivet (40) and the guide pin (20) and the process of fastening the rivet (40) and the gasket (10), the central axis (Z line) of the rivet (40), the central axis (Z line) of the gasket (10), and the central axis (Z line) of the guide pin (20) are arranged on the same line.

[0169] An air intake hole (52) is formed on one side (51) of the rivet guide (50). The one side (51) of the rivet guide (50) is the side that comes into contact with the rivet (40) when the rivet guide (50) adsorbs the rivet (40).

[0170] When the rivet (40) comes into contact with one surface (51) of the rivet guide (50), the contact surface of the rivet (40) includes one surface (e.g., upper surface) of the rivet body (41) and one surface (e.g., upper surface) of the rivet wing (42).

[0171] Air is sucked in through the air intake hole (52).

[0172] One or more air intake holes (52) may be formed.

[0173] For example, two air intake holes (52) may be formed as shown in Fig. 1, or one may be formed as shown in Fig. 2. Three or more air intake holes (52) may be formed as needed.

[0174] When one air intake hole (52) is formed, the air intake hole (52) is formed at the center of the rivet guide (50). In other words, the central axis (Z line) passing through the center of the air intake hole (52) coincides with the central axis (Z line) of the rivet (40). As a result, the central axis (Z line) of the rivet (40) also coincides with the central axis (Z line) of the rivet guide (50).

[0175] When two air intake holes (52) are formed, each air intake hole (52) is formed at a position symmetrical with respect to the central axis (Z line) of the rivet (40) (or rivet guide (50)). Accordingly, when the rivet guide (50) absorbs the rivet (40), the rivet (40) is positioned at the center of the rivet guide (50).

[0176] According to an example of an embodiment of the present invention, a rivet mounting portion (511) is formed on one side (51) of the rivet guide (50).

[0177] The aforementioned air intake hole (52) is formed in the rivet mounting portion (511).

[0178] A rivet (40) is seated in the rivet seating portion (511). When air is sucked in through the air intake hole (52), the rivet (40) is sucked into the rivet guide (50) and seated in the rivet seating portion (511). Specifically, one surface (e.g., the upper surface in FIG. 1) of the rivet (40) is seated in the rivet seating portion (511).

[0179] The rivet mounting portion (511) is formed in a groove shape.

[0180] Specifically, the rivet mounting portion (511) is formed by recessing from one side (51) of the rivet guide (50) to the opposite side to a preset depth.

[0181] The rivet mounting portion (511) can be formed in a shape corresponding to the contact surface of the rivet (40). The contact surface of the rivet (40) refers to one side of the rivet (40) (e.g., the upper surface in FIG. 1). Specifically, the one side of the rivet (40) refers to one side (e.g., the upper surface) of the rivet body (41) and one side (e.g., the upper surface) of the rivet wing (42).

[0182] The rivet mounting portion (511) includes a bottom surface (511a) and a side surface (511b). In the present specification, the bottom surface (511a) of the rivet mounting portion (511) may be referred to as a 'rivet mounting portion bottom surface (511a)', and the side surface (511b) of the rivet mounting portion (511) may be referred to as a 'rivet mounting portion side surface (511b)'.

[0183] The bottom surface (511a) of the rivet seating portion represents the bottom surface of the rivet seating portion (511) sunken to a preset depth. The bottom surface (511a) of the rivet seating portion comes into contact with one surface (upper surface) of the rivet (40).

[0184] The rivet mounting portion side (511b) represents the inner surface (or inner circumference) of the rivet mounting portion (511) formed in a groove shape.

[0185] The rivet mounting side (511b) surrounds the rivet mounting bottom (511a).

[0186] The rivet mounting side (511b) is formed at a preset depth from one side (51) of the rivet guide (50).

[0187] The rivet mounting side (511b) is formed to be inclined. That is, the rivet mounting side (511b) is formed as a sloped surface. Being formed to be inclined means that the rivet mounting side (511b) is not parallel to the central axis (Z line) of the rivet guide (50).

[0188] The cross-sectional diameter of the rivet mounting portion (511) increases from the bottom surface (511a) of the rivet mounting portion toward one surface (51) of the rivet guide (50).

[0189] The cross-sectional diameter of the rivet mounting portion (511) represents the diameter of the rivet mounting portion (511) when the rivet mounting portion (511) is cut in the same direction as the bottom surface (511a) of the rivet mounting portion.

[0190] In detail, the cross-sectional diameter of the rivet mounting portion (511) represents the diameter of the rivet mounting portion (511) when the rivet mounting portion (511) is cut in a direction perpendicular to the longitudinal direction of the rivet guide (50). The longitudinal direction of the rivet guide (50) is the same direction as the longitudinal direction of the guide pin (20), and represents, for example, the up-down direction in Fig. 1.

[0191] The rivet mounting side (511b) can be formed to be inclined overall. That is, the entire rivet mounting side (511b) can be formed as an inclined surface.

[0192] Alternatively, the inclined surface may be formed only at a certain portion (depth) on the rivet mounting side (511b).

[0193] In detail, the inclined surface on the side surface (511b) of the rivet seating portion can be formed only at a certain depth in the depth direction of the rivet seating portion (511). In the example of this embodiment, the inclined surface starts from one side (51) of the rivet guide (50) and is formed only to a preset length (depth) toward the bottom surface (511a) of the rivet seating portion (see Fig. 7).

[0194] And, on the rivet mounting side (511b), it is formed without an incline from the end of the inclined surface to the bottom surface (511a) of the rivet mounting side. Being formed without an incline means that the rivet mounting side (511b) is parallel to the central axis (Z line) of the rivet guide (50). This part guides and supports the edge of the rivet wing (42) so that the rivet wing (42) does not come off.

[0195] Since the rivet seating portion side (511b) is formed as an inclined surface or is formed to partially include an inclined surface, when the rivet guide (50) adsorbs the rivet (40), the edge of the rivet wing (42) is guided along the inclined surface and moves toward the bottom surface (511a) of the rivet seating portion.

[0196] As a result, one side (upper side) of the rivet (40) that is seated on the rivet seating portion (511) (specifically, the bottom surface (511a) of the rivet seating portion) is seated on the bottom surface (511a) of the rivet seating portion without being tilted. In addition, the central axis (Z line) of the rivet (40) coincides with the central axis (Z line) of the rivet guide (50) or the central axis (Z line) of the rivet seating portion (511). The central axis (Z line) represents, for example, the Z line or a line connecting the up-down directions in FIG. 1.

[0197] The inclined surface formed on the side surface (511b) of the rivet mounting portion is formed along the edge of the bottom surface (511a) of the rivet mounting portion, and surrounds the bottom surface (511a) of the rivet mounting portion.

[0198] Meanwhile, a groove (511c) (referred to as an 'internal groove (511c)') can be formed on the bottom surface (511a) of the rivet mounting portion (see Fig. 7).

[0199] The inner groove (511c) is formed in a ring shape along the edge of the bottom surface (511a) of the rivet mounting portion.

[0200] The inner groove (511c) reduces the contact area between one surface of the rivet (40) and the bottom surface (511a) of the rivet seat, so that the rivet (40) can be easily separated from the rivet seat (511).

[0201] The riveting device of the present invention includes components necessary for the rivet guide (50) to move and components necessary for the rivet guide (50) to vacuum-absorb the rivet (40).

[0202] Figures 4 to 6 illustrate the process of assembling a rivet assembly (60) and a can (70).

[0203] Referring to Fig. 4, a rivet assembly (60) represents a combination of a rivet (40) and a gasket (10). That is, the rivet assembly (60) is a rivet-gasket assembly. The combination of the rivet (40) and the gasket (10) is as described above.

[0204] The central axis (Z line) of the rivet assembly (60) coincides with the central axis (Z line) of the rivet (40) and the central axis (Z line) of the gasket (10). That is, the central axis (Z line) of the rivet assembly (60), the central axis (Z line) of the rivet (40), and the central axis (Z line) of the gasket (10) are arranged on the same line.

[0205] The can (70) has a receiving space inside and receives an electrode assembly. Since the electrode assembly is well known, a description thereof is omitted.

[0206] The can (70) has a preset length in one direction (e.g., the up-down direction in FIG. 4). The one direction coincides with the longitudinal direction of the can (70).

[0207] The can (70) has a central axis line (Z-line) (Z-line in FIG. 4). The central axis line (Z-line) of the can (70) represents a line passing through the center of the can (70) in the longitudinal direction of the can (70).

[0208] The can (70) includes one side and the other side. The one side and the other side of the can (70) refer to opposite sides in the longitudinal direction of the can (70).

[0209] One side of the can (70) is opened, and a center hole (71) is formed in the center of the other side of the can (see Fig. 4).

[0210] The center hole (71) of the can (70) is a hole that penetrates the other side of the can (70), and the center of the center hole (71) of the can (70) is positioned on the center axis line (Z line) of the can (70).

[0211] The rivet assembly (60) is coupled to the can (70).

[0212] The process of combining the rivet assembly (60) with the can (70) is described as follows.

[0213] (1) One side (21) of the guide pin (20) is inserted into the interior of the can (70) through one side of the can (70), and then passes through the center hole (71) formed on the other side of the can (70) to be exposed to the outside. At this time, the center axis (Z line) of the guide pin (20) and the center axis (Z line) of the can (70) are arranged on the same line. This means that the center (or center axis (Z line)) of the can (70) is aligned on the center axis (Z line) of the guide pin (20).

[0214] The guide pin (20) (first guide pin (20)) used in the process of combining the rivet assembly (60) with the can (70) is identical to or similar to the guide pin (20) (second guide pin (20)) used in the process of combining the rivet (40) and the gasket (10) described above. The second guide pin (20) refers to the guide pin (20) described above.

[0215] The description of the first guide pin (20) is replaced with the description of the second guide pin (20). In addition, hereinafter, the first guide pin (20) and the second guide pin (20) are referred to as 'guide pin (20)' without distinction.

[0216] When the guide pin (20) moves inside the can (70), a pin support (72) is placed inside the can (70) to guide the movement of the guide pin (20) and align the central axis (Z line) of the guide pin (20) (see FIGS. 5 and 6).

[0217] The pin support (72) is not limited to a specific shape and includes a through hole (73) penetrating the pin support (72) in one direction. The guide pin (20) moves through the through hole (73).

[0218] The central axis (Z line) passing in one direction through the center of the pin support (72) or the center of the through hole (73) is arranged on the same line as the central axis (Z line) of the guide pin (20).

[0219] (2) The pressurizing part (80) moves the rivet assembly (60) after being combined with the rivet assembly (60) and combines the rivet assembly (60) with the can (70). A description of the pressurizing part (80) will be provided later.

[0220] The pressurized portion (80) is combined with the rivet assembly (60) by vacuum suction.

[0221] The pressurizing part (80) moves to adsorb the rivet assembly (60), and while the rivet assembly (60) is adsorbed, the center groove (411) of the rivet (40) moves to a position facing one end of the guide pin (20).

[0222] Then, the pressurizing portion (80) moves toward one end of the guide pin (20) so that one end of the guide pin (20) is inserted into the center groove (411) of the rivet (40). By inserting one end of the guide pin (20) into the center groove (411) of the rivet (40), the rivet assembly (60) and the guide pin (20) are coupled to each other. FIG. 4 (a) and FIG. 5 show a state in which the rivet assembly (60) and the guide pin (20) are coupled.

[0223] When one end of the guide pin (20) is inserted into the center groove (411) of the rivet (40), the pressurizing portion (80) moves toward the guide pin (20) and pressurizes the rivet assembly (60) and the guide pin (20).

[0224] By the pressure of the pressure part (80), the rivet assembly (60) and the guide pin (20) move in one direction (e.g., downward in FIG. 4).

[0225] Accordingly, the rivet assembly (60) absorbed by the pressurized portion (80) is fastened to the center hole (71) of the can (70). This means that the rivet assembly (60) is coupled to the can (70). Figure 4 (b) and Figure 6 show a state in which the rivet assembly (60) and the can (70) are coupled.

[0226] When the rivet assembly (60) is combined with the can (70), the inner surface (or inner circumference) of one side of the can (70) surrounding the central hole (71) of the can (70) comes into contact with the outer surface (or outer circumference) of the gasket (10) (specifically, the gasket body (11)) surrounding the rivet (40).

[0227] Specifically, when the rivet assembly (60) is inserted into the center hole (71) of the can (70), the outer surface of the gasket (10) comes into contact with the inner surface (or inner circumference) of the can (70) surrounding the center hole (71) of the can (70).

[0228] In the process of fastening the rivet assembly (60) and the guide pin (20) and the process of fastening the rivet assembly (60) and the can (70), the central axis (Z line) of the rivet assembly (60), the central axis (Z line) of the can (70), and the central axis (Z line) of the guide pin (20) are arranged on the same line. This means that the central axis (Z line) of the rivet assembly (60) and the central axis (Z line) of the can (70) are aligned on the central axis (Z line) of the guide pin (20).

[0229] Below, the pressurizing part (80) is described (see Fig. 8).

[0230] The pressurizing portion (80) is similar to the rivet guide (50) described above. In describing the pressurizing portion (80), the same or similar content as that described in the rivet guide (50) is omitted and replaced with the content described in the rivet guide (50).

[0231] An air intake hole (82) is formed on one side (81) of the pressurizing portion (80). The one side (81) of the pressurizing portion (80) is the side that comes into contact with the rivet assembly (60) when the pressurizing portion (80) absorbs the rivet assembly (60).

[0232] When the rivet assembly (60) comes into contact with one surface (81) of the pressurizing portion (80), the contact surface of the rivet assembly (60) includes one surface (e.g., upper surface) of the rivet body (41) and one surface (e.g., upper surface) of the rivet wing (42).

[0233] According to an example of an embodiment of the present invention, an assembly mounting portion (811) is formed on one side (81) of the pressurizing portion (80).

[0234] An air intake hole (82) is formed in the assembly mounting portion (811).

[0235] A rivet assembly (60) is mounted on the assembly mounting portion (811). When air is sucked in through the air intake hole (82), the rivet assembly (60) is sucked into the pressurized portion (80) and mounted on the assembly mounting portion (811). Specifically, one surface (e.g., the upper surface in FIG. 8) of the rivet (40) is mounted on the assembly mounting portion (811).

[0236] The assembly mounting portion (811) is formed in a groove shape.

[0237] Specifically, the assembly mounting portion (811) is formed by recessing from one side (81) of the pressurizing portion (80) to the opposite side to a preset depth.

[0238] The assembly mounting portion (811) can be formed in a shape corresponding to the contact surface of the rivet assembly (60) (specifically, the rivet (40)). The contact surface of the rivet (40) refers to one side of the rivet (40) (for example, the upper side in FIG. 8). Specifically, the one side of the rivet (40) refers to one side (for example, the upper side) of the rivet body (41) and one side (for example, the upper side) of the rivet wing (42).

[0239] The assembly mounting portion (811) includes a bottom surface (811a) and a side surface (811b). In this specification, the bottom surface (811a) of the assembly mounting portion (811) may be referred to as the 'assembly mounting portion bottom surface (811a)', and the side surface (811b) of the assembly mounting portion (811) may be referred to as the 'assembly mounting portion side surface (811b)'.

[0240] The bottom surface (811a) of the assembly mounting portion represents the bottom surface of the assembly mounting portion (811) sunken to a preset depth. The bottom surface (811a) of the assembly mounting portion comes into contact with one surface (upper surface) of the rivet (40).

[0241] The assembly mounting portion side (811b) represents the inner surface (or inner circumference) of the assembly mounting portion (811) formed in a groove shape.

[0242] The assembly mounting side (811b) surrounds the assembly mounting bottom (811a).

[0243] The assembly mounting portion side (811b) is formed at a preset depth from one side (81) of the pressurizing portion (80).

[0244] The side surface (811b) of the assembly mounting portion is formed to be inclined. That is, the side surface (811b) of the assembly mounting portion is formed as an inclined surface. Being formed to be inclined means that the side surface (811b) of the assembly mounting portion is not parallel to the central axis (Z line) of the pressurizing portion (80).

[0245] The cross-sectional diameter of the assembly mounting portion (811) increases from the bottom surface (811a) of the assembly mounting portion toward one surface (81) of the pressurizing portion (80).

[0246] The cross-sectional diameter of the assembly mounting portion (811) represents the diameter of the assembly mounting portion (811) when the assembly mounting portion (811) is cut in the same direction as the bottom surface (811a) of the assembly mounting portion.

[0247] In detail, the cross-sectional diameter of the assembly mounting portion (811) represents the diameter of the assembly mounting portion (811) when the assembly mounting portion (811) is cut in a direction orthogonal to the longitudinal direction of the pressurizing portion (80). The longitudinal direction of the pressurizing portion (80) is the same direction as the longitudinal direction of the guide pin (20), and represents, for example, the up-down direction in FIG. 4.

[0248] The assembly mounting portion side (811b) can be formed to be inclined overall. That is, the entire assembly mounting portion side (811b) can be formed as an inclined surface.

[0249] Alternatively, the inclined surface may be formed only at a certain portion (depth) on the assembly mounting side (811b).

[0250] In detail, the inclined surface on the side surface (811b) of the assembly mounting portion can be formed only at a certain depth in the depth direction of the assembly mounting portion (811). In the example of this embodiment, the inclined surface starts from one side (81) of the pressurizing portion (80) and is formed only up to a preset length (depth) toward the bottom surface (811a) of the assembly mounting portion (see Fig. 8).

[0251] And, on the side surface (811b) of the assembly mounting portion, the portion from the end of the inclined surface to the bottom surface (811a) of the assembly mounting portion is formed without an incline. Being formed without an incline means that the side surface (811b) of the assembly mounting portion is parallel to the central axis (Z line) of the pressurizing portion (80). This portion guides and supports the edge of the rivet wing (42) or the gasket wing (12) so that the rivet wing (42) or the gasket wing (12) does not come off.

[0252] Since the side surface (811b) of the assembly mounting portion is formed as an inclined surface or is formed to partially include an inclined surface, when the pressurizing portion (80) adsorbs the rivet assembly (60), the edge of the rivet wing (42) or gasket wing (12) is guided along the inclined surface and moves toward the bottom surface (811a) of the assembly mounting portion.

[0253] As a result, one side (upper side) of the rivet (40) that is seated on the assembly mounting portion (811) (specifically, the bottom surface (811a) of the assembly mounting portion) is seated on the bottom surface (811a) of the assembly mounting portion without being tilted. In addition, the central axis (Z-line) of the rivet assembly (60) coincides with the central axis (Z-line) of the pressurizing portion (80) or the central axis (Z-line) of the assembly mounting portion (811). The central axis (Z-line) represents, for example, the Z-line or a line connecting the up-down directions in FIG. 8.

[0254] The inclined surface formed on the side surface (811b) of the assembly mounting portion is formed along the edge of the bottom surface (811a) of the assembly mounting portion, and surrounds the bottom surface (811a) of the assembly mounting portion.

[0255] Meanwhile, a groove (811c) (referred to as an 'internal groove (811c)') can be formed on the bottom surface (811a) of the assembly mounting portion (see Fig. 8).

[0256] The inner groove (811c) is formed in a ring shape along the edge of the bottom surface (811a) of the assembly mounting portion.

[0257] The internal groove (511c) formed on the bottom surface (511a) of the rivet mounting portion described above may be named a 'first internal groove (511c)', and the internal groove (811c) formed on the bottom surface (811a) of the assembly mounting portion may be named a 'second internal groove (811c)'.

[0258] The second internal groove (811c) reduces the contact area between one surface of the rivet (40) and the bottom surface (811a) of the assembly mounting portion, thereby allowing the rivet assembly (60) to be easily separated from the assembly mounting portion (811).

[0259] The riveting device of the present invention includes components necessary for the pressurizing portion (80) to move and components necessary for the pressurizing portion (80) to vacuum-absorb the rivet assembly (60).

[0260] The drawing symbol P1 shown in Fig. 7 represents a rivet support (P1) on which a rivet (40) is mounted.

[0261] The rivet guide (50) moves to vacuum-absorb the rivet (40) seated on the rivet support (P1), and while absorbing the rivet (40), moves to a position where the center groove (411) of the rivet (40) faces one end of the guide pin (20). In Fig. 7, the drawing symbol P11 indicates a groove or hole formed in the rivet support (P1).

[0262] And, the drawing symbol P2 shown in FIG. 8 represents an assembly support (P2) on which a rivet assembly (60) is mounted.

[0263] The pressurizing part (80) moves and vacuum-absorbs the rivet assembly (60) seated on the assembly support (P2), and while absorbing the rivet assembly (60), moves the center groove (411) of the rivet (40) to a position facing one end of the guide pin (20). In Fig. 8, the drawing symbol P21 indicates a groove or hole formed in the assembly support (P2).

[0264] As described above, the riveting device of the present invention is provided with the above-described guide pin (20) to align the centers of the rivet (40) and the gasket (10).

[0265] That is, the guide pin (20) ensures that the centers of the rivet (40) and the gasket (10) are positioned on the vertical central axis (Z line) of the guide pin (20) during the process of joining the rivet (40) and the gasket (10). Accordingly, the concentricity tolerance defect of the rivet assembly (60) is resolved, and assembly defects are improved.

[0266] In addition, the guide pin (20) ensures that the centers of the rivet assembly (60) and the can (70) are positioned on the vertical center axis (Z line) of the guide pin (20) during the process of joining the rivet assembly (60) and the can (70). Accordingly, the concentricity tolerance defect of the rivet assembly (60) and the can (70) is resolved, and assembly defects are improved.

[0267] In addition, the riveting device of the present invention has a plurality of guide pins (20), so that assembly tolerance defects can be simultaneously eliminated when assembling a rivet (40) and a gasket (10) and when assembling a rivet assembly (60) and a can (70).

[0268] In addition, the riveting device of the present invention is effective in precision assembly processes and increases production efficiency.

[0269] In addition, the riveting device of the present invention can be applied even when the sizes and shapes of rivets, gaskets, and cans are different, and assembly tolerances can be minimized.

[0270] In addition, the riveting device of the present invention can minimize assembly tolerances, which is effective in improving yield.

[0271] In addition, the riveting device of the present invention can simultaneously perform assembly of a plurality of rivets (40) and a gasket (10) and assembly of a plurality of rivet assemblies (60) and a can (70).

Claims

1. A gasket with a through hole formed in the center; a guide pin inserted into the above through hole; and A rivet is included that is seated on one side of the above guide pin and is combined with the above gasket, The above gasket is movable along the above guide pin, A riveting device for a cylindrical battery, wherein when the gasket and the rivet are combined, the central axis of the gasket, the central axis of the rivet, and the central axis of the guide pin are arranged on the same line.

2. In paragraph 1, Includes a gasket guide with a central hole formed in the center, The above guide pin is inserted into the above center hole, A riveting device for a cylindrical battery, wherein the gasket guide moves along the guide pin to support the gasket.

3. In paragraph 2, A riveting device for a cylindrical battery, wherein a gasket mounting portion for mounting the gasket is formed on one side of the gasket guide.

4. In paragraph 1, Including a rivet guide that seats the rivet on one side of the guide pin, A riveting device for a cylindrical battery, wherein the rivet guide moves toward one end of the guide pin so that one end of the guide pin is inserted into the center groove of the rivet.

5. In paragraph 4, When one end of the guide pin is inserted into the center groove of the rivet, the rivet guide moves toward the guide pin and presses the rivet and the guide pin, By the pressure of the above rivet guide, the rivet and the guide pin move in one direction, A riveting device for a cylindrical battery, wherein the rivet moves and engages with the gasket.

6. In paragraph 4, A riveting device for a cylindrical battery, wherein the edge of one end of the above guide pin is formed with a slope.

7. In paragraph 4, A riveting device for a cylindrical battery, wherein a rivet mounting portion for mounting the rivet is formed on one side of the rivet guide.

8. In paragraph 7, A riveting device for a cylindrical battery, wherein the side surface of the rivet mounting portion is formed to be inclined.

9. A can with one end open and a central hole formed on the other end; A guide pin which is inserted into the interior of the can through one side of the can and then exposed to the outside by penetrating the center hole formed in the other side of the can; and A rivet assembly is included that is seated on one side of the guide pin and engages with the center hole of the can. The above rivet assembly is a combination of a rivet and a gasket, A riveting device for a cylindrical battery, wherein when the central hole of the can and the rivet assembly are combined, the central axis of the rivet assembly, the central axis of the can, and the central axis of the guide pin are arranged on the same line.

10. In paragraph 9, The rivet assembly is secured to one side of the guide pin, and includes a pressing portion that pressurizes the rivet assembly. A riveting device for a cylindrical battery, wherein the pressurizing portion moves toward one end of the guide pin so that one end of the guide pin is inserted into the center groove of the rivet.

11. In paragraph 10, When one end of the guide pin is inserted into the center groove of the rivet, the pressing portion moves toward the guide pin and presses the rivet assembly and the guide pin, By the pressure of the above pressurizing portion, the rivet assembly and the guide pin move in one direction, A riveting device for a cylindrical battery, wherein the rivet assembly moves to engage the center hole of the can.

12. In paragraph 10, A riveting device for a cylindrical battery, wherein the edge of one end of the above guide pin is formed with a slope.

13. In paragraph 10, A riveting device for a cylindrical battery, wherein an assembly mounting portion for mounting the rivet assembly is formed on one surface of the pressurized portion.

14. In paragraph 13, A riveting device for a cylindrical battery, wherein the side surface of the assembly mounting portion is formed to be inclined.

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