KR101693829B1

KR101693829B1 - Screw sealing device

Info

Publication number: KR101693829B1
Application number: KR1020150052441A
Authority: KR
Inventors: 김재황
Original assignee: 김재황
Priority date: 2015-04-14
Filing date: 2015-04-14
Publication date: 2017-01-09
Also published as: KR20160122490A

Abstract

[0001] The present invention relates to a screw sealing apparatus, and more particularly, to an o-ring (* 'O' -shaped sealing member) for realizing a waterproof function of a micro screw used in an electronic product such as a smart phone, And a screw sealing device for preventing a deviation from occurring between the micro screw and the coupling process of the O-ring manufacturing process and the micro screw is formed as one process.
Accordingly, the screw sealing apparatus of the present invention has a lower inner diameter punching die formed by arranging a plurality of teeth holes spaced apart from each other; An upper inner diameter punch mold for forming an inner diameter hole in the soft pad by inserting the tack pin into the outer hole when the soft pad is seated on the lower inner diameter punch mold; A lower jig in which a plurality of screw insertion grooves for inserting the head of the screw are formed in a spaced apart arrangement and the flexible pad is seated such that the body of the screw is inserted into the inner diameter hole in a state where the head of the screw is inserted; And a bushing body having a diameter larger than that of the tongue pin and the inner diameter hole is used to replace the tongue pin and the bushing body is formed to correspond to the tongue pin, And an outer diameter punching die for punching the soft pads inserted into the body of the inner punch and punching the soft pads so that outer diameter holes having a diameter larger than that of the inner punch holes are formed.

Description

[0001] SCREW SEALING DEVICE [0002]

The present invention relates to a screw sealing device, and more particularly, to a screw sealing device for manufacturing a waterproof screw used in a waterproof type smartphone.

In recent years, smart phones have been rapidly developed, and various functions are being added in hardware and software.

Among them, recently, a smartphone having a waterproof function has been introduced without using a separate waterproof case.

In the past, smartphones with such a waterproof function have been manufactured in the form of a built-in type without replacing internal parts such as a battery, and the entire case is bonded by bonding and sealing to penetrate the interior of the smartphone There was a way to remove the space itself.

However, in such a smartphone having a conventional waterproof function, it is difficult to replace internal components in case of a / s, so it is necessary to replace the entire smartphone. Therefore, in order to adopt the above- Many manufacturers have tried to implement the waterproof function in other ways without adopting the above-mentioned complete sealing method.

Accordingly, a smart phone manufactured in recent years is not a type in which an internal PCB and a mounting component are separately mounted when a case is separated as in the past, but an assemblage (assy ), And when the a / s occurs, only the corresponding assembly is used and the smartphone is manufactured.

In this case, since each of the assemblies is individually formed, if a sealing member is provided at a portion where each of the assemblies come into contact with each other and each of the assemblies is fitted by fitting, it is possible to realize a waterproof function, Discloses a product in which a sealing member is provided between each of the assemblies and a combination of the assemblies is fitted in a form of a waterproof function when the smartphone is manufactured.

However, since the fitting performance of each of the assemblies is weaker than that of using a fastening member such as a screw, the product in which the above-mentioned waterproof function is implemented often has a problem that water often penetrates through the assemblies due to impact or aging .

As a supplement to this, in addition to the way of assembling the assemblies as described above, the assemblies are fastened by screws having o-rings ('O' -shaped silicone rings) It is also possible to present a security scheme in which water does not penetrate between assemblies.

However, the method of combining the respective assemblies with the screw into which the O-ring ('O' -shaped silicone ring) is inserted has a problem that the size of the screw used in the smartphone is too small, The operation of inserting the O-ring into the body of the screw requires a very precise work, which requires a lot of working time, and thus a problem that the mass-production yield of the smartphone is remarkably lowered is expected.

Due to various problems caused when the screw is used, the manufacturer has developed a smartphone in which the respective assemblies are fitted to each other without using the screw, thereby realizing a waterproof function. However, Since it is causing flooding problems, the smartphone makers are in a position that they can not launch a product with a satisfactory life-protection function.

Korean Patent Publication No. 10-2013-0081145 (published on Mar. 07, 2013)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems. An object of the present invention is to provide an o-ring (* 'O' shaped sealing member) for realizing a waterproof function of a micro screw used in an electronic product such as a smart phone The present invention is to provide a screw sealing device that prevents a deviation from occurring between an O-ring and a micro screw and that a process of combining the O-ring manufacturing process and the micro screw is formed as a single process.

According to an aspect of the present invention, there is provided a screw sealing apparatus comprising: a lower inner diameter punching die having a plurality of teeth holes spaced apart from each other; An upper inner diameter punch mold for forming an inner diameter hole in the soft pad by inserting the tack pin into the outer hole when the soft pad is seated on the lower inner diameter punch mold; Wherein a plurality of screw insertion grooves into which the head portion of the screw is inserted are spaced apart from each other, and a lower inner diameter punching die in which the flexible pad is seated such that the body of the screw is inserted into the inner diameter hole when the head of the screw is inserted, A lower jig; And a bushing body having a diameter larger than that of the tongue pin and the inner diameter hole is used to replace the tongue pin and the bushing body is formed to correspond to the tongue pin, And an outer diameter punching die for punching the soft pads inserted into the body of the inner punch and punching the soft pads so that outer diameter holes having a diameter larger than that of the inner punch holes are formed.

In this case, the screw sealing device may include a vertical pressurizing device which is in close contact with the upper surface of the upper inner diameter punching die to vertically press the upper inner diameter punching die and come in close contact with the upper surface of the outer diameter punching die to vertically press the outer diameter punching die. ; As shown in FIG.

Here, the lower inner diameter punch mold further includes an outer diameter groove having a diameter corresponding to the outer diameter hole, and the outer diameter groove may be disposed on the same center axis as the other hole.

Meanwhile, the bottom cover has an air inlet formed on the outer side of the body, the air inlet communicates with the screw insertion grooves, and the screw sealing device includes an air hose inserted into the air inlet. And an air suction device connected to the air hose to suck air in the air hose to insert the screw while being sucked into the screw insertion groove; As shown in FIG.

Further, the screw sealing device may include a vibrating device disposed at a lower portion of the lower sheet and having a vibration motor installed therein to generate vibration when power is supplied to the vibration motor; And an auxiliary seating table formed with a circular hole corresponding to the screw insertion groove of the lower sheet and seated on the lower sheet; And the screw may be inserted into the screw insertion groove of the lower sheet by the vibration of the vibration device in the auxiliary seating state.

The screw sealing device may include a second hole corresponding to the outer diameter hole, and presses the upper surface of the soft pad in a state in which the inner diameter hole of the soft pad is seated on the lower surface of the screw, A pressure plate on which fastening pieces are formed on both side portions, respectively; And a fastening ring which is seated on the lower part of the lower sheet and which is fastened to the fastening piece on each of both side parts. When the fastening part is fastened with the fastening piece and is bent downward, the pressing plate presses the flexible pad And a jig combination that maintains the state.

The screw sealing device may include an outer diameter hole having a diameter larger than that of the inner diameter hole. The outer diameter hole is seated on the lower portion. The soft pad is seated on an upper surface of the outer diameter hole. And a lower support die for forming a part of the soft pad so as to be in close contact with the screw to form the O-ring on the outer periphery of the body of the screw.

Since the process of manufacturing the O-ring and the process of inserting the O-ring into the screw are one process, it is not necessary to separately manufacture the O-ring and insert it into the screw, so that the manufacturing time is greatly shortened and the manufacturing cost is greatly reduced And the waterproof failure rate is significantly reduced compared with the conventional method due to the deviation between the O-ring and the screw. Therefore, the smartphone manufacturer can adopt the design method using the screw in the waterproof function.

1 is an exploded perspective view of a lower jig, a lower inner diameter punching die and an upper inner diameter punching die of a screw sealing apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of the state where the screw sealing device shown in Fig. 1 is engaged.
3 is a perspective view of a state in which an inner diameter hole of a soft pad is processed by the screw sealing apparatus shown in FIG.
FIG. 4 is a perspective view of the screw sealer shown in FIG. 1 with a vibration device, an auxiliary seat, an air hose, and an air suction device mounted thereon; FIG.
FIG. 5 is a cross-sectional view showing a state where a screw is inserted into the lower sheet shown in FIG. 4;
FIG. 6 is an exploded perspective view of a state in which a soft pad is disposed on an upper portion of a lower paper sheet into which a screw is inserted, a pressure plate and a jig combination body for fixing the flexible pad are disposed, and an outer diameter punching die for forming an outer diameter hole is disposed in the flexible pad. .
7 is a cross-sectional view of the state where the flexible pad is seated on the screw of the lower sheet shown in Fig.
8 is a perspective view of a state in which an O-ring is formed on the outer peripheral edge of the screw body by an outer diameter punching die.

Hereinafter, other objects and features of the present invention will be apparent from the following description of embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, a screw sealing apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 9 attached hereto.

First, referring to FIGS. 1 to 3, a description will be given of forming an inner diameter hole by processing a soft pad by a screw sealing apparatus according to an embodiment of the present invention.

1 is an exploded perspective view of a lower jig, a lower inner diameter punching die and an upper inner diameter punching die of a screw sealing apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the screw sealing apparatus shown in FIG. 3 is a perspective view of a state in which an inner diameter hole of a soft pad is processed by the screw sealing apparatus shown in FIG.

1 to 3, a screw sealing apparatus according to an embodiment of the present invention includes a lower inner diameter punching mold 10, an upper inner diameter punching mold 20, a lower jig 30, a pressure plate 40, (50), and a vertical pressurizing device (60).

The lower inner diameter punching die 10 is formed in the shape of a square metal cylinder, and is formed with a plurality of holes 11 arranged vertically from top to bottom. In this case, the lower inner diameter punching die 10 is further formed with an outer diameter groove 12 having a diameter corresponding to the outer diameter hole of the outer diameter punching mold 110 described later. At this time, As shown in FIG. In the drawing, the outer diameter groove 12 is formed as if it is formed on the entire lower inner diameter punching mold 10 because the plurality of the tapping holes 11 are formed to overlap with each other. The lower inner diameter punching die 10 is seated on the lower jig 30 to be described later such that the outer diameter groove 12 faces upward.

The upper inner diameter punching die 20 is formed in the shape of a square metal cylinder, and a number of tacking pins 21 corresponding to the tacking holes 11 are formed on the lower surface. In this case, the tack pin 21 is inserted into the tack hole 11 of the lower inner diameter tacking mold 10, and is formed to have the same central axis as the tack hole 11. The upper inner diameter punching mold 20 is formed with an inner diameter hole 2a in the soft pad 2 by inserting the tacking pin 21 into the tacking hole 11 when the upper inner diameter punching die 20 is seated on the lower inner diameter tacking mold 10.

The lower jig 30 is formed in a rectangular tubular shape and has a shape in which the barrier ribs protrude upward in the outer side. In addition, the lower jig 30 is formed by arranging a plurality of screw insertion grooves 31 into which the head of the screw 1, which will be described later, is inserted. The lower jig 30 has a function of seating the flexible pad 2 when the inner pad 2a is formed in the flexible pad 2 and a function of fixing the flexible pad 2 after forming the inner pad 2a of the flexible pad 2. [ 1 is inserted into the inner diameter hole 2a in a state in which the head of the screw 1 is inserted.

The pressure plate 40 is formed in a metal plate shape and a second hole 41 having a larger diameter than the inner diameter hole 2a to be formed in the soft pad 2 is formed. When the flexible pad 2 is seated on the lower jig 30, the pressure plate 40 presses the upper surface of the flexible pad 2. In this case, the pressure plate 40 has the fastening pieces 42 are formed and fixed with the flexible pad 2 pressed by a jig combination body 50 to be described later.

The jig combination body 50 is seated on the lower portion of the lower jig 30 and each of the side portions is formed with a fastening ring 51 to be fastened to the fastening piece 42. The jig combination body 50 is fixed to the pressing plate 52 by a fixing piece 52 which fixes the fixing ring 51 so as not to move upward when the fixing ring 51 is engaged with the coupling piece 42 and is bent downward 40 maintain the state in which the flexible pad 2 is pressed.

The vertical pressurizing device 60 is in close contact with the upper surface of the upper inner diameter punching die 20 to vertically press the upper inner diameter punching mold 20 to be in close contact with the upper surface of the outer diameter punching mold 110, And presses the punching mold 10 vertically. The vertical pressurizing device (60) can be constructed by mounting a pneumatic cylinder having a pressurizing cylinder (61) mounted at its shaft end on a cradle. However, the vertical pressing device 60 is not limited to the above-described example, and the vertical pressing device 60 may be variously modified.

The inner diameter hole (not shown) is formed in the flexible pad 2 by using a screw sealing device including the lower inner diameter punching mold 10, the upper inner diameter punching mold 20, the lower jig 30 and the vertical pressing device 60 as described above. 2a are formed in a state in which the outer diameter groove 12 of the lower inner diameter punching mold 10 is seated on the lower jig 30 so as to face upward, The tack pin 21 of the upper inner diameter tacking mold 20 is inserted into the outer diameter of the lower inner diameter tacking mold 10 in the state that the lower inner diameter tacking mold 10 is seated on the lower inner diameter tacking mold 10, The flexible pads 2 are put on the flexible pads 2 such that they can be inserted into the center axis of the jig assembling body 11 and the pressing pads 2 are pressed by the pressing pads 2, 40).

Next, when the vertical pressing device 60 is driven to press the upper inner diameter punching mold 20, the tacking pins 21 are punched out of the soft pads 2 to form the inner diameter holes 2a. Next, when the driving of the vertical pressing device 60 is released and the pressing plate 40, the jig combination body 50, the upper inner diameter punching mold 20 and the lower inner diameter punching mold 10 are separated in order, the soft pads 2 The inner diameter hole 2a is formed as shown in Fig. 3 and the outer diameter groove 12 of the lower inner diameter punching die 10 forms the protruding shape with the inner diameter hole 2a as the central axis.

Next, in the following, after the inner diameter hole 2a is formed in the soft pad 2, the screw 1 is inserted into the screw insertion groove 31 of the lower jig 30 using the screw sealing apparatus of the present invention Will be described.

4 is an exploded perspective view showing a state in which the vibration device 70, the auxiliary seat 80, the air hose 90 and the air suction device 100 are mounted on the lower jig 30 of the screw sealing device shown in Fig. to be. 5 is a sectional view showing a state in which the screw 1 is inserted into the lower jig 30 shown in Fig. 4 and 5, a screw sealing apparatus according to an embodiment of the present invention includes a vibration device 70, an auxiliary seat 80, an air hose 90, and an air suction device 100 .

The vibration device 70 is disposed at a lower portion of the lower jig 30. The vibration device 70 is formed in a rectangular tubular shape and a vibration motor is installed inside to generate vibration when power is supplied to the vibration motor.

The auxiliary seating table 80 is formed in the shape of a rectangular plate, and has a plurality of circular holes 81 formed in the outer side thereof with a partition wall protruding upwardly and communicating in the downward direction from the upper side. Here, the circular holes 81 are formed in the same number as the screw insertion grooves 31 of the lower jig 30, and are formed at the same positions as the diameters of the screw insertion grooves 31.

The air hose 90 is inserted into the air inlet 91 formed on the outside of the body of the lower jig 30. In this case, the lower jig 30 is configured so that the air inlet 91 communicates with the screw insertion grooves 31.

The air suction apparatus 100 is an apparatus for sucking air, and is connected to an air hose 90 to suck air in the air hose 90.

As described above, the method of placing the screw 1 on the lower jig 30 using the vibration device 70, the auxiliary seat 80, the air hose 90, and the air suction device 100, The auxiliary seating table 80 is disposed in the vibrating device 70 so that the screw insertion grooves 31 and the circular holes 81 are aligned with each other and then the plurality of screws 1 are attached to the auxiliary seating table 80 It is poured.

Thereafter, when the air suction device 100 is driven and air is sucked through the screw insertion groove 31 of the lower jig 30 to drive the vibration device 70 to generate vibration, 1 is moved around the screw insertion groove 31 while being shaken and the screw 1 used around the screw insertion groove 31 is inserted into the screw insertion groove 31 by the air suction force. In this case, the screw 1 is inserted into the screw insertion groove 31 in a state where the body in which the screw thread is formed faces upward, so that the plurality of screws 1 are automatically inserted into the screw insertion groove 31 do. Next, the lower jig 30 into which the screw 1 is inserted is separated from the vibration device 70, the auxiliary seat 80, and the air hose 90 for the next process.

Next, description will be given of forming the O-ring 3 by placing the flexible pad 2 having the inner diameter hole 2a formed in the lower jig 30 into which the plurality of screws 1 are inserted as described above .

6 shows a state in which the flexible pad 2 is disposed on the upper portion of the lower jig 30 in which the screw 1 is inserted and the jig combination body 50 is arranged for the pressure plate 40 for fixing the flexible pad 2, And an outer diameter punching die 110 for forming an outer diameter hole in the soft pad 2 are disposed. 7 is a cross-sectional view showing the state in which the flexible pad 2 is seated on the screw 1 of the lower jig 30 shown in Fig.

6 and 7, the screw sealing apparatus according to an embodiment of the present invention further includes an outer diameter punching die 110 and a lower support die 120.

The outer diameter punching mold 110 is formed of a metal cylinder and is used in place of the lower inner diameter punching mold 10 and the upper inner diameter punching mold 20 of the above-described embodiment. The outer tubular metal mold 110 is formed by projecting a tubular body 111 on the lower surface. In this case, the tubular tubular body 111 is formed in a metal tube shape having one end opened, Diameter hole 2a and a diameter larger than the inner-diameter hole 2a. In this case, the inner diameter of the piercing tube 111 determines the outer diameter of the O-ring 3 to be formed in the screw 1. [ The outer diameter punching mold 110 is formed by punching the soft pads 2 inserted into the body of the screw 1 and punching the soft pads 2 into outer diameter holes having a larger diameter than the inner diameter holes 2a , And an O-ring (3) is formed on the screw (1).

The lower support metal mold 120 is formed in a rectangular plate shape and further has an outer diameter hole 121 having a larger diameter than the inner diameter hole 2a. Here, the outer diameter hole 121 may be formed to have the same diameter as the piercing tube 111. The lower support metal mold 120 is fixed to the lower jig 30 and the body of the screw 1 in which the thread is formed in the outer diameter hole 121 is inserted and the pipe body 111 of the outer diameter punching die 110 is inserted A part of the inserted soft pad 2 is inserted.

The method of forming the O-rings 3 in the screw 1 using the outer diameter punching die 110 is as follows. First, as in the above-described embodiment, The body of the screw 1 is exposed through the outer diameter hole 121 of the lower jig 30 so that the outer diameter hole 121 of the lower supporting die 120 is inserted into the lower jig 30, .

Next, the flexible pad 2 having the inner diameter hole 2a formed on the upper surface of the lower supporting metal mold 120 is disposed, and the inner diameter hole 2a of the flexible pad 2 is inserted into the body of the screw 1, The flexible pad 2 is pressed by the pressure plate 40 and the pressure pad 40 is fixed by using the jig combination body 50 to fix the flexible pad 2. [

Next, the vertical pressing device 60 is driven in a state where the pinching tube 111 of the outer diameter pressing mold 110 is inserted into the second hole 41 of the pressing plate 40, and the outer diameter pressing mold 110 is rotated The tubular body 111 of the outer diameter punching mold 110 is punched out of the soft pad 2 with the body of the screw 1 having the threads formed therein inserted therein, A part of the flexible pad 2 is separated from the flexible pad 2 and is guided to the outer diameter hole 121 of the lower supporting metal mold 120. The diameter of the tubular body 111 is larger than the diameter of the inner diameter hole 2a, And then,

Thereafter, when the outer diameter dicing die 110 is separated from the press plate 40 and the jig combined body to remove the soft pad 2, the soft pad 2 has a region of an outer diameter hole having a larger diameter than the inner diameter hole 2a At this time, an area corresponding to the outer diameter hole remains in the shape of the O-ring 3 in the screw 1. [

Next, when the screw 1 is detached from the screw insertion groove 31 of the lower jig 30, an O-ring 3 is formed on the screw 1 to surround the outer circumference of the body, as shown in FIG. 8 .

As described above, in the screw sealing apparatus according to the embodiment of the present invention, since the process of manufacturing the o-ring 3 and the process of inserting the o-ring 3 into the screw 1 are one process, The manufacturing time is largely shortened and the manufacturing cost is greatly reduced and the deviation between the O-ring 3 and the screw 1 is reduced compared with the conventional method, So that the smartphone maker can adopt the design method using the screw (1) in the case of the waterproof function.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

One ; Screw 2; Soft pad
2a; Inner diameter hole 3; O-ring
10; A lower inner diameter punch mold 11; Tachaloh
12; Outer diameter groove
20; An upper inner diameter punch mold 21; Tachapin
30; A lower jig 31; Screw insertion groove
40; A pressure plate 41; The second hole
42; Fastener
50; Jig combination 51; Fastening ring
60; Vertical pressurizing device 61; Pressurized cylinder
70; Vibrating device
80; Auxiliary seat
81; Circular hole
90; Air hose 91; Air inlet
100; Air suction device
110; Outer diameter stamping mold 111; Punch tube
120; A lower support die 121; Outer diameter hole

Claims

A lower inner diameter punching die 10 formed with a plurality of puncture holes 11 spaced apart from each other;
When the soft pads 2 are placed on the lower inner diameter punching mold 10, the tack pins 21 are inserted into the tack holes 11, An upper inner diameter punching die 20 for forming an inner diameter hole 2a in the flexible pad 2 by being inserted;
A plurality of screw insertion grooves 31 into which the head of the screw 1 is inserted are formed to be spaced apart and the body of the screw 1 is inserted into the inner diameter hole 2a in a state where the head of the screw 1 is inserted. A lower jig 30 on which the lower inner diameter punching mold 10 on which the soft pad 2 is placed is seated; And
The punch tube body 111 is used in place of the lower inner diameter punching mold 10 and the upper inner diameter punching mold 20 and formed to have a larger diameter than the tacking pins 21 and the inner diameter hole 2a, The punch pipe body 111 is formed so as to correspond to the punch pin 21 and punches the flexible pad 2 inserted into the body of the screw 1 so that an outer diameter hole having a larger diameter than the inner diameter hole 2a is formed And an outer diameter punching die (110) for forming an O-ring (3) on the screw (1) by punching the flexible pad (2).

The method according to claim 1,
The upper inner diameter punching die 20 is pressed vertically and brought into close contact with the upper surface of the outer diameter punching die 110 to press the outer diameter punching die 110 vertically A vertical pressurizing device 60; Wherein the screw sealing device further comprises:

The method according to claim 1,
The lower inner diameter punching die 10 is further provided with an outer diameter groove 12 having a diameter corresponding to the outer diameter hole and the outer diameter groove 12 is disposed on the same center axis as the tacking hole 11 Screw sealing device.

The method according to claim 1,
The lower jig (30) has an air inlet (91) formed on the outer side of the body,
The air inlet 91 communicates with the screw insertion grooves 31,
An air hose 90 inserted into the air inlet 91; And
An air suction device 100 connected to the air hose 90 to suck air in the air hose 90 so that the screw 1 is inserted into the screw insertion groove 31 while being sucked; Wherein the screw sealing device further comprises:

The method according to claim 1,
A vibration device 70 disposed at a lower portion of the lower jig 30 and having a vibration motor installed therein to generate vibration when power is supplied to the vibration motor; And
An auxiliary seating table 80 formed with a circular hole 81 corresponding to the screw insertion groove 31 of the lower jig 30 and seated on the lower jig 30; Further comprising:
Wherein the screw is inserted into the screw insertion groove (31) of the lower jig (30) by the vibration of the vibration device (70) in the state of the auxiliary seat (80).

The method according to claim 1,
A second hole 41 corresponding to the outer diameter hole is formed and the inner diameter hole 2a of the soft pad 2 is seated on the lower jig 30 so as to be inserted into the body of the screw 1 A pressing plate pressing the upper surface of the flexible pad 2 and having fastening pieces 42 formed on both sides thereof; And
A fastening ring 51 is fastened to the lower jig 30 and fastened to the fastening piece 42 on both sides of the lower jig 30. The fastening ring 51 is fastened to the fastening piece 42 And a jig assembly (50) for holding the pressing pad (2) in a state of being pressed by the pressing plate when it is bent downward.

The method according to claim 1,
The outer diameter of the outer diameter hole 121 is larger than that of the inner diameter hole 2a and is seated on the lower jig 30. The soft pad 2 is mounted on the upper surface, And a part of the soft pad 2 is pressed against the screw 1 when the piercing tube 111 is inserted through the outer diameter hole 121 so that the O- 3. The screw sealing apparatus of claim 1, further comprising: