CN102905574B - Eyelet erecting device and eyelet installation method - Google Patents

Abstract

The invention provides an eyelet installation device and an eyelet installation method. The eyelet installation device (1, 1a) clamps the base material (2) between the eyelet (3) and the washer (4), and installs the eyelet (3) and the washer (4) on the base material (2). The gasket (4) has a hole (4a) engaged with the eyelet (3), and the gasket (4) has a hole edge (41) surrounding the hole (4a) and a hole edge (41) continuous with the hole edge (41) The outer edge part (42) of the part (41) extending radially outward, the eyelet installation device (1, 1a) includes: an upper mold (20), which is used to configure the corn (3); a lower mold (10), It includes a rod (11), a sleeve (12) and an elastic member (13). The above rod (11) faces the corn (3), and the above sleeve (12) can It is installed on the outer circumference of the rod part (11) in an axial sliding manner, and is used to hold the washer (4). : the hole edge support surface (16), which is arranged along the outer periphery of the rod portion (11), and is used to support the hole edge portion (41) of the washer; the action surface (15), which starts from the hole edge support surface (16) As it inclines upward toward the center of the stem portion (11), the action surface (15) acts together with the tip of the corn (3) to cut the base material (2).

Description

Eyelet installation device and eyelet installation method

technical field

The invention relates to an eyelet installation device and an eyelet installation method.

Background technique

Ring-shaped attachments called "eyelets" are used to reinforce the holes around holes provided in shoelaces, clothing such as belts, and office supplies such as documents. When attaching the eyelets to the cloth, the cloth with holes is placed between the upper mold holding the eyelet and the lower mold holding the gasket, and the upper mold and the lower mold are molded together to join the eyelet to the gasket. However, such pre-drilling operation has a problem in working efficiency, so a device for simultaneously performing the drilling of the cloth and joining the eyelet and the washer has been proposed.

For example, in Japanese Authorized Utility Model No. 2547638, the following eyelet installation device is disclosed: sleeves are respectively arranged around the upper and lower molds. And, when the cloth is cut by pressing down the cloth on the lower die side with the protruding part provided on the upper die, the front and back of the cloth are supported by the two sleeves. Thereby, the opening of the cloth and the attachment of the eyelets are simultaneously performed without causing an excessive pulling force to act on the hole portion of the cloth.

In addition, the following eyelet installation device is disclosed in Japanese Patent Application Laid-Open No. 1-94801: While the front end of the eyelet is pressed on the lower die to cut the cloth, the elastic force of the springs provided on the lower die and the upper die is used to support the eyelet. Cloth, install the eyelets and washers.

Patent Document 1: Japanese Authorized Utility Model No. 2547638

Patent Document 2: Japanese Patent Application Laid-Open No. 1-94801

However, in the eyelet attaching device described in Patent Document 1, the protrusion formed on the upper die presses the cloth into the opening of the lower die, and the cloth is cut by shearing action between the wall of the opening and the wall of the protrusion. Therefore, when the cloth is thick, it is sometimes difficult to press the cloth into the lower mold, thus limiting the thickness of the cloth that can be used. On the other hand, even if the thick cloth can be pressed into the base, it is necessary to apply a strong load from the upper die to the lower die in order to press the thick cloth into the lower die. At this time, pressure is applied to the peripheral region of the hole of the gasket, and the peripheral region of the hole of the gasket may be deformed. Or when the cloth is pressed into the opening, the gasket may be misplaced, which may cause poor installation of the eyelets.

On the other hand, the eyelet attaching device described in Patent Document 2 cuts the cloth by using the compressive stress between the front end of the eye and the lower die, so it is not necessary to press the cloth into the opening, and the eyelet can be attached to various types and On fabrics of various thicknesses. However, in Patent Document 2, when the corn is pressed by the upper die, the front end of the corn pushes up the washer (shim), and the washer rises from the lower die, resulting in an unstable state. Therefore, the peripheral region of the hole of the washer may be deformed, or the washer itself may be misaligned, resulting in poor eyelet attachment.

Contents of the invention

In view of the above problems, the present invention provides an eyelet attaching device and an eyelet attaching method capable of suppressing deformation of the periphery of the hole of the washer or misalignment of the washer itself, thereby suppressing poor eyelet attachment.

In order to solve the above-mentioned problems, in a technical solution of the present invention, the eyelet installation device is a device that clamps the base material between the eyelet and the washer and installs the eyelet and the washer on the base material. The hole, the gasket has a hole edge around the hole and an outer edge that is continuous with the hole edge and extends radially outward from the hole edge. The eyelet installation device includes: an upper mold, which is used to configure corns; The lower mold includes a rod, a sleeve and an elastic member, the rod faces the corn, the sleeve is installed on the outer periphery of the rod in a manner that can slide along the axial direction of the rod, and is used to hold the washer, and the above-mentioned The elastic member exerts force on the sleeve in the direction of the upper mold, and the upper surface of the rod part has: a supporting surface of the edge of the hole, which is arranged along the outer periphery of the rod part, and is used to support the edge of the hole of the washer; The edge supporting surface inclines upward toward the center of the rod, and this working surface works together with the tip of the corn to cut the base material.

In a further version of the eyelet installation device of the present invention, the sleeve is an annular body having a hole through which the rod passes, and the sleeve has an annular ring formed along the edge of the hole for receiving the washer. of the groove.

In one embodiment of the eyelet installation device of the present invention, the sleeve includes: an annular first groove for receiving the outer edge of the washer; an annular second groove formed in the first groove The peripheral side is shallower than the first groove.

In another technical solution of the present invention, the eyelet installation method is a method of clamping a base material between an eyelet and a washer and installing the eyelet and the washer on the base material, the above-mentioned washer has a hole engaged with the eyelet, and the washer It has a hole edge around the hole and an outer edge that is continuous with the hole edge and extends radially outward from the hole edge. The eyelet installation method includes the following steps: clamping the base material on the eyelet installation device Between the mold and the lower mold, the eyelet installation device includes: an upper mold, which is used to configure corns; Installed on the outer periphery of the rod in a manner that can slide along the axial direction of the rod. The sleeve is used to hold the washer. The above-mentioned elastic member applies force to the sleeve in the direction of the upper die. The upper surface of the rod is provided with: a hole edge portion The supporting surface, which is arranged along the outer periphery of the rod, is used to support the edge of the hole of the washer; the acting surface, which starts from the supporting surface of the hole edge and slopes upwards as it goes to the center of the rod, is the same as that of the eyelet. The front end works together to cut the base material; make the upper mold and the lower mold close together, press the base material with the front end of the eyelet, press the upper surface of the hole edge of the gasket with the pressed base material, and move the gasket and the sleeve downward together , support the edge of the hole on the supporting surface of the edge of the hole; in the state of supporting the edge of the hole on the supporting surface of the edge of the hole, use the front end of the corn to further press the substrate and cut the substrate on the working surface; After the base material is installed, when the sleeve with the washer is moved upward by the force of the elastic member, the front end of the eyelet enters the space formed between the edge of the hole and the supporting surface of the edge of the hole, so that the gasket and the eyelet join.

In a further embodiment of the eyelet installation method of the present invention, the step of cutting the base material on the acting surface is: in a state where the upward pressure of the sleeve on which the gasket is arranged acts on the base material through the edge of the hole of the gasket Next, the front end of the eyelet applies downward pressure to press the substrate, thereby cutting the substrate.

According to the present invention, it is possible to provide an eyelet attaching device and an eyelet attaching method capable of suppressing deformation of the peripheral region of the hole of the washer and misalignment of the washer itself, and suppressing poor eyelet attachment.

Description of drawings

Fig. 1 is a cross-sectional view showing an eyelet attaching device according to an embodiment of the present invention.

2 is a cross-sectional view showing the arrangement of an upper die, an eyelet, a base material, a gasket, and a lower die of the eyelet attaching device according to the embodiment of the present invention.

3 is a cross-sectional view showing a state in which the upper mold is lowered and the base material is sandwiched between the upper mold and the lower mold when eyelets are attached.

Fig. 4 is a cross-sectional view showing a state in which the tip of the eyelet is pressed against the base material when the eyelet is attached.

Fig. 5 is a cross-sectional view showing a state in which the front end of the eye bites into the base material to cut the base material when the eyelet is attached.

Fig. 6 is a cross-sectional view illustrating a state in which an eyelet is joined to a washer and fixed to the front and back surfaces of a base material when the eyelet is attached.

7 is a cross-sectional view showing an eyelet attaching device according to a first modified example of the embodiment of the present invention.

Fig. 8 is a cross-sectional view showing a state in which the front end of the eyelet presses the base material when the eyelet is attached by the eyelet attaching device shown in Fig. 7 .

9 is a cross-sectional view showing a state in which the front end of the eyelet is bent by a concave portion and joined to the washer when the eyelet is attached by the eyelet attaching device shown in FIG. 7 .

10 is a cross-sectional view showing an eyelet attaching device according to a second modified example of the embodiment of the present invention.

11 is a cross-sectional view showing an eyelet attaching device according to a third modified example of the embodiment of the present invention.

Fig. 12 is a cross-sectional view showing an eyelet attaching device according to a fourth modified example of the embodiment of the present invention.

Detailed ways

Next, embodiments of the present invention will be described with reference to the drawings. In the representation methods of the drawings below, the same or similar reference numerals are attached to the same or similar parts. In addition, the following embodiments illustrate devices and methods for realizing the technical idea of the present invention, and the technical idea of the present invention does not specifically define the structure, arrangement, and the like of constituent parts as follows.

As shown in Figure 1, the eyelet installation device 1 of the embodiment of the present invention comprises: upper mold 20, and it is configured for eyelet 3; Gasket 4. A groove-shaped guide portion 26 for fixing the eyelet 3 is provided at the lower end of the upper die 20 .

The eyelet 3 includes a cylindrical main body 3 a and a flange 3 b extending from the outer peripheral edge of the base end portion of the main body 3 a radially outward of the main body 3 a. The flange 3 b of the eyelet 3 is supported by the guide portion 26 of the upper die 20 . As shown in FIG. 2 , the gasket 4 has a hole 4 a in the center, and the gasket 4 has an annular hole edge portion 41 surrounding the hole 4 a and a ring that is continuous with the hole edge portion 41 and extends radially outward from the hole edge portion 41 . The outer edge portion 42 is provided with a protruding portion 42 a protruding toward the front side of the gasket 4 (see FIG. 3 ). Various metal commercially available parts can be used for the eyelet 3 and the washer 4 . The base material 2 is not particularly limited as long as it is a sheet-like material such as a cloth, paper, synthetic resin, or rubber sheet.

The lower mold 10 includes: a rod portion 11, which faces the corn 3; a sleeve 12, which is installed on the outer periphery of the rod portion 11 in a manner capable of sliding along the axial direction of the rod portion 11 (direction of arrow A in FIG. The supporting washer 4; the elastic member 13, which is connected between the rod portion 11 and the sleeve 12, exerts force on the sleeve 12 in the direction of the upper mold 20. The rod portion 11 has a cylindrical shape, and an annular missing flesh portion 110 is formed at the end (upper end) on the side facing the upper mold 20 . The sleeve 12 is accommodated in the meatless part 110 , and the sleeve 12 slides in the meatless part 110 under the elastic force of the elastic member 13 . The sleeve 12 is an annular body and has a hole 121 through which the rod 11 passes. The central axis of the sleeve 12 (not shown) is coaxial with the central axis of the rod 11 . The elastic member 13 is not particularly limited as long as it is a material capable of accumulating elastic potential energy. For example, various elastic members such as springs (coil springs and leaf springs) and rubber are used.

As shown in FIG. 3 , the rod portion 11 is convex in the direction of the upper die 20 so that the cross section is trapezoidal. The upper surface of the rod portion includes: a hole edge supporting surface 16, which is arranged along the outer periphery of the rod portion 11, and supports the hole edge portion 41 of the washer 4; The central part of 11 goes and tilts upwards, and this active surface 15 plays a role together with the front end of eyelet 3 and cuts base material 2; Base material supporting surface 14, it is used for supporting base material 2 when installing eyelets.

As shown in FIG. 1 , the substrate support surface 14 is connected to the upper end of the action surface 15 and is a horizontal surface extending in the center of the rod portion 11 in a direction perpendicular to the axial direction of the rod portion 11 . By having the horizontal base material support surface 14, the posture of the base material 2 can be kept in an appropriate posture when the base material 2 is cut. In order to reliably support the base material 2 when the base material 2 is cut, the surface of the base material supporting surface 14 may be subjected to uneven processing or the like. In addition, the action surface 15 may have a curved surface shape.

As shown in FIG. 5 , when the front end of the eyelet 3 is pressed against the action surface 15 to cut the substrate 2 , the hole edge support surface 16 serves as a hole edge extending from the sleeve 12 to the rod portion 11 for supporting the washer 4 . The support area of the portion 41 functions. By providing the rim support surface 16 on the rod part 11, the rim part 41 of the gasket 4 can be fixed between the base material 2 and the rim support surface 16, so that misalignment of the gasket 4 can be suppressed. The hole edge supporting surface 16 only needs to have an area capable of supporting a part of the hole edge 41 . The rim portion support surface 16 may be formed in a shape matching the shape of the rim portion 41 of the gasket 4 . For example, when the hole edge portion 41 has a flat plate shape as shown in FIG. 5 , the hole edge portion support surface 16 may be arranged parallel to the upper surface of the substrate support surface 14 . When the edge portion 41 is formed to have an inclination angle, the edge portion supporting surface 16 may be inclined according to the inclination angle of the edge portion 41 .

As shown in FIG. 2 , the sleeve 12 has a groove portion 171 for accommodating the outer edge portion 42 of the gasket 4 on the upper surface facing the upper die 20 . The groove portion 171 includes: an annular first groove 17 for supporting the protruding portion 42a of the outer edge portion 42; The edge of the hole 121 of the barrel 12 is formed. As shown in FIG. 1 , the first groove 17 has a bottom surface conforming to the contour shape of the protruding portion 42a, and fixes the gasket 4 at a predetermined position. At this time, as shown in FIG. 1 , the hole edge portion 41 of the gasket 4 is arranged above the second groove 18 so as to protrude slightly above the rod portion 11 than the second groove 18 . The second groove 18 is formed shallower than the first groove 17 . When the sleeve 12 is at the movement upper limit position (the position shown in FIGS. 1 and 2 ), the bottom surface of the second groove 18 is arranged to be continuous with the hole edge support surface 16 of the rod 11 on the same plane. When the sleeve 12 is located at the movement upper limit position, a gap 161 is formed between the hole edge portion 41 and the hole edge portion support surface 16 (see FIG. 1 ). In addition, a space 19 formed by the bottom surface of the second groove 18 , the outer edge portion 42 of the gasket 4 , and the hole edge portion 41 is formed in the second groove 18 . By having the above-mentioned structures, it is possible to easily exert the function of sliding the tip of the corn 3 from above the working surface 15 through the gap 161 into the space 19 after cutting the base material 2 .

Next, a method for attaching eyelets to the front and back surfaces of the base material 2 using the eyelet attaching device 1 according to the embodiment of the present invention will be described. As shown in FIG. 1 , first, the flange 3 b of the eyelet 3 is arranged on the guide portion 26 of the upper die 20 so that the main body 3 a faces the lower die 10 . On the other hand, the outer edge portion 42 of the gasket 4 is arranged in the first groove 17 of the sleeve 12 of the lower die 10 . The base material 2 is disposed between the upper mold 20 and the lower mold 10 .

As shown in FIG. 3 , the upper die 20 is lowered toward the lower die 10 so that the tips of the corns 3 come into contact with the upper surface of the base material 2 . Thereby, the back (lower) side of the base material 2 is arranged on the base material supporting surface 14 of the rod portion 11 and the hole edge portion 41 of the gasket 4 . When the upper mold 20 is further lowered toward the lower mold 10 side, the front end of the main body 3 a of the eyelet 3 bites into the base material 2 . As the upper mold 20 is further lowered and pressed, the base material 2 presses the upper surface of the hole edge portion 41 of the gasket 4 . The sleeve 12 holding the washer 4 compresses the elastic member 13 against the elastic force of the elastic member 13 by a downward force applied to the base material 2 , and the sleeve 12 slides downward while holding the washer 4 . The lower surface of the hole edge portion 41 of the gasket 4 narrows the gap 161 between the hole edge portion 41 and the hole edge portion supporting surface 16, and gradually approaches the hole edge portion supporting surface 16 of the rod portion 11, as shown in FIG. 4 Finally, the lower surface of the rim portion 41 of the gasket 4 is in contact with the rim portion support surface 16 . At this time, the gap 161 is completely closed. By supporting the gasket 4 on the hole edge portion support surface 16 in this way, the deformation of the gasket 4 near the hole edge portion 41 caused by the pressing of the upper die 20 is suppressed.

Next, as shown in FIG. 5 , in a state where the rim portion 41 is supported on the rim portion support surface 16 , the upward pressure of the sleeve 12 supporting the washer 4 acts on the Substrate 2, and the upper mold 20 is further lowered, and the front end of corn 3 is used to further press the substrate 2 against the action surface 15, and the substrate 2 is cut off on the action surface 15 by compressive stress.

When the base material 2 is cut off, the sleeve 12 is not subjected to the downward pressure acting on the gasket 4 from the upper mold 20 through the base material 2, so the elastic member 13 makes the sleeve 12 under the action of the elastic force to stretch itself. The barrel 12 gradually moves upward (direction C in FIG. 5 ). As a result, the rim portion 41 is separated from the rim portion support surface 16 . Subsequently, the upper die 20 is further lowered to move the front end of the eyelet 3 to the radially outer side of the rod portion 11 (direction B in FIG. 5 ). That is, the front end of the eyelet 3 is slid into the space 19 below the hole edge portion 41 from the acting surface 15 via the hole edge portion support surface 16, so that as shown in FIG. 41 engagement. Thereby, the eyelet 3 and the gasket 4 are joined smoothly without applying excessive pressure to the hole edge portion 41 of the gasket 4 .

According to the eyelet attaching device 1 according to the embodiment of the present invention, when the base material 2 is cut by pressing on the rod portion 11, the sleeve 12 moves downward while holding the washer 4 by the action of the elastic member 13, so Deformation of the gasket 4 can be suppressed. In addition, since the hole edge supporting surface 16 for supporting the hole edge portion 41 of the gasket 4 is disposed on the rod portion 11, the hole edge portion can be supported even when cutting the base material 2 that generates strong stress. The surface 16 is in contact with the lower surface of the hole edge portion 41 of the gasket 4 and supports the pressure applied from the upper die 20 to the upper surface of the hole edge portion 41 of the gasket 4 through the base material 2 . Therefore, even if a large force is applied when cutting a thick cloth, the misalignment of the gasket 4 can be suppressed, and the mounting failure of the eyelet 3 and the gasket 4 is also reduced. The stress of the gasket 4 is also reduced compared to conventional ones, so that the thickness of the gasket 4 can be reduced. In addition, even when the eyelet 3 and the gasket 4 are joined after the base material 2 is cut, the eyelet 3 and the gasket 4 can be fitted reliably and smoothly by the action of the elastic member 13 that applies an upward force to the sleeve 12. , It is also possible to suppress the failure of the fabric to be entangled, the sharp edge-like cutting caused by the contact between the eyelet 3 and the washer 4, and the like.

Modification 1

The difference between the eyelet mounting device 1a of the first modified example of the embodiment of the present invention and the eyelet mounting device 1 shown in FIG. 1 is that, as shown in FIG. Recesses 15 a between the bearing surfaces 16 . The concave portion 15 a has a downwardly convex curved shape, and the concave portion 15 a is provided continuously with the action surface 15 . Other than that, the other configurations of the first modified example are substantially the same as those shown in FIG. 1 , so redundant descriptions will be omitted.

When using the eyelet installation device 1a shown in Figure 7 to install eyelets, the upper mold 20 is further lowered to the lower mold 10 side from the state shown in Figure 7, and as shown in Figure 8, the front end of the corn 3 is bitten. into substrate 2. At this time, downward force is applied to the hole edge portion 41 of the gasket 4 via the base material 2 , and the sleeve 12 supporting the gasket 4 slides downward while holding the gasket 4 . Then, the lower surface of the hole edge portion 41 of the gasket 4 (a part of the lower surface of the hole edge portion 41 located slightly radially outward from the hole edge 41 a ) and the hole edge portion supporting surface 16 of the rod portion 11 contact with the upper surface. Accordingly, deformation of the gasket 4 in the vicinity of the hole edge portion 41 caused by the pressing of the upper die 20 can be suppressed.

Upper die 20 is further lowered to press the front end of corn 3 against the action surface 15. After cutting the base material 2 on the action surface 15, the upper die 20 is further lowered so that the front end of corn 3 is along the action surface 15 and the concave portion 15a. Slide radially outward of the rod portion 11 (direction D in FIG. 9 ), so that the eyelet 3 is engaged with the washer 4 . At this time, the front end of the eyelet 3 is bent by the curved surface of the concave portion 15a, so that the joint strength between the eyelet 3 and the washer 4 is improved, and it is difficult to generate a sharp edge at the time of joining.

The concave portion 15a does not have to be a curved shape, and may be formed of a flat surface. That is, as long as the concave portion 15a can bend the front end of the corn 3, the purpose can be achieved, and the shape of the concave portion 15a is not limited to the example shown in FIG. 8 . As another shape example, a groove with an inverted triangular cross section may be provided as the recess 15a of this embodiment, and the recess 15a includes a first surface continuous with the inclined surface of the action surface 15 and a second surface continuous with the first surface. In addition, the recessed part 15a may be a polyhedral concave groove.

Modification 2

The difference between the eyelet mounting device 1b of the second modified example and the eyelet mounting device 1 shown in FIG. 1 is that, as shown in FIG. That is, in the example of FIG. 10, when the bottom surface of the second groove 18 of the sleeve 12 is continuous with the hole edge supporting surface 16 of the rod 11 and arranged on the same plane, the base material supporting surface 14 is positioned lower than the hole of the washer 4. The upper surface of the edge portion 41 is located closer to the upper side. Adopt the eyelet installation device shown in Figure 10, when utilizing upper die 20 and lower die 10 to clamp base material 2, base material supporting surface 14 can bear the initial pressure transmitted from upper die 20 through base material 2, so can suppress A large pressure is applied to the hole edge part 41, and deformation|transformation of the hole edge part 41 is prevented before it happens.

Modification 3

The difference between the eyelet mounting device 1c of the 3rd modified example and the eyelet mounting device shown in Fig. 1 is that: as shown in Fig. inclined plane. By forming the base material supporting surface 14 as a slope, when cutting the base material 2 , the base material supporting surface 14 can be easily bit into the base material and the base material 2 can be cut.

Modification 4

The difference between the eyelet mounting device 1d of the fourth modified example and the eyelet mounting device shown in FIG. 1 is that, as shown in FIG. The edge of the hole 121 through which the rod portion 11 passes is formed to accommodate the outer edge portion 42 of the washer 4 . That is, in the eyelet attaching device 1 of FIG. 1 , the posture of the washer 4 is held more stably by having two grooves (the first groove 17 and the second groove 18 ) having different depths. However, as shown in FIG. 12, the sleeve 12 has one groove portion 171 for accommodating the outer edge portion 42 of the washer 4, and a certain purpose can be achieved. According to the eyelet attachment device 1d shown in FIG. 12, the structure of the sleeve 12 can be simplified.

As mentioned above, although embodiment of this invention was described, it should not be understood that this invention is limited by the statement and drawing which make a part of this indication. In this way, the present invention naturally includes various configurations not described here, and the present invention can be embodied in a modified form within a range not departing from the gist of the present invention at the stage of implementation.

Explanation of reference signs

1, 1a, 1b, 1c, 1d, eyelet installation device; 2, base material; 3, corn; 4, washer; 10, lower die; 11, rod; 12, sleeve; 13, elastic member; 14, Support surface; 15, action surface; 15a, recess; 16, support surface; 17, first groove; 18, second groove; 19, space; 20, upper mold; 26, guide part; 3a, main body; 3b, convex Edge; 4a, hole; 41, edge of hole; 42, outer edge; 110, missing meat part; 121, hole; 161, gap; 171, groove.

Claims (5)

1. an eyelet erecting device (1, 1a, 1b, 1c, 1d), base material (2) is clamped in the device be arranged between corn (3) and packing ring (4) and by above-mentioned corn (3) and above-mentioned packing ring (4) on above-mentioned base material (2), above-mentioned packing ring (4) has the hole (4a) engaged with above-mentioned corn (3), this packing ring (4) possess around above described holes (4a) surrounding peritreme portion (41) and with above described holes edge (41) continuously and the outer edge (42) extended to radial outside from above described holes edge (41), this eyelet erecting device (1, 1a, 1b, 1c, feature 1d) is,

This eyelet erecting device (1,1a, 1b, 1c, 1d) comprising:

Patrix (20), it is for configuring corn (3);

Counterdie (10), it comprises bar portion (11), sleeve (12) and elastic component (13), above-mentioned bar portion (11) is facing with above-mentioned corn (3), above-mentioned sleeve (12) is can be arranged on the periphery of above-mentioned bar portion (11) along the mode in axial sliding of above-mentioned bar portion (11), this sleeve (12) is for keeping above-mentioned packing ring (4), above-mentioned elastic component (13) exerts a force to above-mentioned patrix (20) direction to above-mentioned sleeve (12)

Above-mentioned bar portion (11) possesses at the upper surface of bar portion (11):

Peritreme portion bearing-surface (16), its periphery along bar portion (11) is arranged, the peritreme portion (41) of supporting bead;

Acting surface (15), it goes along with the central authorities to above-mentioned bar portion (11) and tilts upward from above described holes edge bearing-surface (16), this acting surface (15) plays a role and cuts off base material (2) together with the front end of corn (3)

Move between the position that the position that the peritreme portion (41) of the packing ring (4) that above-mentioned sleeve (12) can keep in above-mentioned sleeve (12) contacts with peritreme portion bearing-surface (16) and peritreme portion (41) and peritreme portion bearing-surface (16) separate.

2. eyelet erecting device according to claim 1 (1,1a, 1b, 1c, 1d), is characterized in that,

Above-mentioned sleeve (12) is the ring bodies with the hole (121) passed for bar portion (11), above-mentioned sleeve (12) has the groove portion (171) of ring-type, this groove portion (171) is formed along the edge of above described holes (121), for accommodating the outer edge (42) of packing ring (4).

3. eyelet erecting device according to claim 1 (1,1a, 1b, 1c, 1d), is characterized in that,

Above-mentioned sleeve (12) possesses:

1st groove (17) of ring-type, it is for accommodating the above-mentioned outer edge (42) of above-mentioned packing ring (4);

2nd groove (18) of ring-type, it is formed in the inner circumferential side of above-mentioned 1st groove (17), more shallow than above-mentioned 1st groove (17).

4. an eyelet installation method, this eyelet installation method base material (2) is clamped in the method be arranged between corn (3) and packing ring (4) and by above-mentioned corn (3) and above-mentioned packing ring (4) on above-mentioned base material (2), above-mentioned packing ring (4) has the hole (4a) engaged with above-mentioned corn (3), this packing ring (4) possess around above described holes (4a) surrounding peritreme portion (41) and with above described holes edge (41) continuously and the outer edge (42) extended to radial outside from above described holes edge (41), the feature of this eyelet installation method is,

This eyelet installation method comprises the steps:

Between the patrix (20) base material (2) being clipped in eyelet erecting device (1,1a, 1b, 1c, 1d) and counterdie (10), this eyelet erecting device (1,1a, 1b, 1c, 1d) comprising: above-mentioned patrix (20), and it is for configuring above-mentioned corn (3), above-mentioned counterdie (10), it comprises bar portion (11), sleeve (12) and elastic component (13), above-mentioned bar portion (11) is facing with above-mentioned corn (3), above-mentioned sleeve (12) is can be arranged on the periphery of above-mentioned bar portion (11) along the mode in axial sliding of above-mentioned bar portion (11), this sleeve (12) is for keeping above-mentioned packing ring (4), above-mentioned elastic component (13) exerts a force to above-mentioned patrix (20) direction to above-mentioned sleeve (12), above-mentioned bar portion (11) possesses at the upper surface of bar portion (11): peritreme portion bearing-surface (16), its periphery along bar portion (11) is arranged, the peritreme portion (41) of supporting bead, acting surface (15), it goes along with the central authorities to above-mentioned bar portion (11) and tilts upward from above described holes edge bearing-surface (16), and this acting surface (15) plays a role and cuts off base material (2) together with the front end of corn (3),

Make above-mentioned patrix (20) and above-mentioned counterdie (10) close, the front end of above-mentioned corn (3) is utilized to press above-mentioned base material (2), the above-mentioned base material (2) be pressed is utilized to press the upper surface in the peritreme portion (41) of above-mentioned packing ring (4), above-mentioned packing ring (41) is moved downwards together with sleeve (12), above described holes edge (4) is supported on above described holes edge bearing-surface (16);

Under the state being supported on above described holes edge bearing-surface (16) by above described holes edge (41), the front end of above-mentioned corn (3) is utilized to press above-mentioned base material (2) further and above cut off above-mentioned base material (2) at above-mentioned acting surface (15);

After having cut off above-mentioned base material (2), when utilizing the above-mentioned power of elastic component (13) that the above-mentioned sleeve (12) being configured with above-mentioned packing ring (4) is moved upward, make the front end of above-mentioned corn (3) enter into the space be formed between above described holes edge (41) and above described holes edge bearing-surface (16), above-mentioned packing ring (4) is engaged with above-mentioned corn (3).

5. eyelet installation method according to claim 4, is characterized in that,

In the upper step cutting off above-mentioned base material (2) of above-mentioned acting surface (15) be: under the state that the pressure upward of the above-mentioned sleeve (12) making to be configured with above-mentioned packing ring (4) acts on above-mentioned base material (2) via the above described holes edge (41) of above-mentioned packing ring (4), utilize the front end of above-mentioned corn (3) to apply the pressure down pressed above-mentioned base material (2), thus cut off above-mentioned base material (2).