JP2002067163A - Molding/welding method for fastener, and fastener molding die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding/welding method for a fastener which can efficiently form the fastener at a low cost, and in addition, a fastener molding die which is used for the method. SOLUTION: For this molding/welding method, a fastener molding member 35 is arranged on one surface of a sheet 30. Then, the fastener molding die 10 is brought into contact with the fastener forming member 35. At the same time, at the relative section to the die 10 on the other surface of the sheet 30, the horn 71 of an ultrasonic wave device 70 is brought into contact, and the sheet 30 and the member 35 are pinched with the horn 71 and the die 10. Then, the sheet 30 and the member 35 are heated by the horn 71. Thus, the fastener is molded of the member 35, and at the same time, the fastener is welded to the sheet 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming and welding a stopper which is simultaneously formed with a stopper from a member for forming a stopper on a sheet, and a die for molding the stopper used in the method. .

[0002]

2. Description of the Related Art For example, a bag made of a sheet is shown in FIG.
As shown in FIG. 7, two sheets 80 and 81 are joined at a welding portion 83, and a lid 80a for taking in and out an object and a sheet 8 are provided.
1 is provided with various fasteners (here, hooks 85 and 86) such as hook-and-loop fasteners, hooks, and seal fasteners. The lid 80a can be opened and closed by attaching and detaching the hook 85 of the lid 80a to and from the hook 86. . An existing stopper is used as the stopper, and the stopper is attached to each of the sheets 80 and 81.

In such a bag with a stopper, for example, in the case of the hooks 85 and 86 shown in FIG. 19, one side of a sheet 90 having a portion corresponding to a lid 90a as shown in FIG. One member 9 of the male hook 93
4 and the other member 95 is applied to the other surface side.
The male hook 93 composed of the members 94 and 95 is attached by sandwiching the sheet 90 between the members 94 and 95, inserting the sharp protrusion 95a of the member 95 into the member 94, and caulking the sharp protrusion 95a.

On the other hand, in the female hook, similarly, in FIG. 20B, the sheet 91 is sandwiched between one member 97 and the other member 98 of the female hook 96, and the sharp projection 98a of the member 98 is inserted into the member 97. Then, the female hook 96 including the members 97 and 98 is attached.

[0005] Then, the sheet 90 with the hook 93 and the sheet 91 with the hook 96 are overlapped and welded (sewed) on the outside to form a bag as shown in FIG.

[0006]

However, in order to attach the hooks 93 and 96 to the seats 90 and 91 as described above, the seats 90 and 91 must be attached to two members 94 and 9 respectively.
The method of attaching the existing stopper to the sheet, which is sandwiched between 5, 97, 98 and crimped, is inefficient in production efficiency, and the price of the stopper is very high compared to the product price. This leads to high costs.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and a method of forming and welding a fastener capable of efficiently and inexpensively forming the fastener, and a method of using the method. It is an object of the present invention to provide a mold for forming a stopper.

[0008]

According to a first aspect of the present invention, there is provided a method for forming and welding a fastener, comprising: arranging a fastener forming member on one side of a sheet; The stopper forming die is applied to the stopper forming member, and the leading end of the welding device is applied to the mold relative portion on the other surface side of the sheet, and the sheet and the member are sandwiched between the leading end and the mold. By heating the sheet and the member at the leading end of the member, a stopper is formed from the member and the stopper is welded to the sheet.

This method is different from the conventional method using an existing fastener in that a fastener is formed from a fastener forming member and the fastener is welded to a sheet. Thus, not only is it necessary to prepare a member for forming a stopper, but also the stopper can be formed and welded at a time, so that the stopper can be formed efficiently and inexpensively.

A specific stop is a male stop comprising a shaft portion and an outward flange provided at the end of the shaft portion. The male stop fits into a hole formed in the sheet. Stop it together. In this case, it attaches and detaches with a male stopper and a hole.

Another specific stop is a male stop comprising a shaft portion and an outward flange provided at the tip of the shaft, a shaft portion of the male stop and an outward flange. And a female stopper comprising an inward flange provided on the opening side of the cavity shaft and capable of engaging with the outward flange of the male stopper. The male stop and the female stop are fitted together and stopped. In this case, attachment and detachment are performed with the male stopper and the female stopper.

[0012] On the other hand, a fastener forming die according to claim 4 is a die used for forming and welding a fastener from a fastener forming member to a sheet, and wherein the fastener is formed by:
A male stopper comprising a shaft portion and an outwardly-facing flange provided at a tip of the shaft portion, and a cavity complementary to the shaft portion of the male stopper is brought into contact with a stopper forming member. It is characterized in that it has a cavity extending from the surface to the inside and, following this cavity, complementing the outwardly facing collar of the male stop. This mold is used to mold the male stop.

[0013] The mold may include a movable cylindrical outer portion and an inner portion inserted through the outer portion. In that case, the outer portion has a cavity that penetrates from the contact surface of the fastener forming member to the surface on the opposite side, and has an inward flange at the opening of the cavity on the contact surface side. The inner part,
It has a convex portion that is inserted into the cavity portion of the outer portion and that can be inserted into the opening on the contact surface side of the cavity portion. With this configuration, when the male stopper formed by the mold is taken out of the mold, the outer part is advanced with respect to the inner part, so that the male stopper can be easily pulled out from the mold.

Further, in this mold, if the outer portion has an annular projection having a height smaller than the thickness of the stopper forming member around the contact surface of the stopper forming member,
Unnecessary portions for forming the male stopper can be easily blown from the stopper forming member, and the unnecessary portions can be easily removed after the molding.

On the other hand, a metal mold for forming a fastener according to claim 7 is a metal mold used for forming and welding a fastener from a fastener-forming member to a sheet.
A male stopper comprising a shaft portion and an outwardly-facing flange provided at a tip of the shaft portion, and a cavity complementary to the shaft portion of the male stopper is brought into contact with a stopper forming member. A male fastener forming mold having a cavity portion that faces inward from the surface and has a cavity portion that complements the outwardly facing collar portion of the male stopper following the cavity portion;
The stopper has a cavity shaft portion into which the shaft portion and the outward flange portion of the male stopper can be inserted, and an outward flange portion of the male stopper provided on an opening side of the cavity shaft portion. A female stopper comprising an inwardly-facing collar that is engageable, and a cavity complementary to the cavity shaft of the female stopper having an inward direction from an abutting surface of the stopper forming member. Then, a female mold for forming a female fastener having a cavity that complements the inward flange of the female fastener follows the cavity. This mold is used to mold the male stop and the female stop.

In this case, the male fastener-forming die is constructed in the same manner as described above, and the female fastener-forming die is inserted into the cylindrical outer portion and the cylindrical outer portion. Consists of a movable inner part. The outer portion has a hollow portion penetrating from a contact surface of the member for forming a fastener to a surface opposite to the contact surface, and an inward flange is formed on a portion of the hollow portion closer to the inside than the opening on the contact surface side. Part, the inner part is inserted into the cavity part of the outer part,
The outer portion has a shaft portion having a circumferential groove on the opening side of the cavity portion than the inward flange portion.

Also in this case, similarly to the above, it is not only easy to take out the male stopper formed by the male stopper forming die from the die, but also to form the female stopper forming die. When the female stopper formed by the method is taken out, the female part is easily pulled out from the mold by advancing the inner part with respect to the outer part.

Further, the outer portions of the male and female stopper forming dies have annular projections around the contact surfaces of the respective stopper forming members and having a height smaller than the thickness of the stopper forming member. If it has, as described above, it becomes easy to melt the unnecessary portions for forming the male and female fasteners from the fastener-forming member, and the unnecessary portions can be easily removed after the molding.

In the present invention, the sheet is not specified as long as it can be thermally welded to the fastener forming member. In addition to heat-soluble ones, a sheet (woven fabric, non-woven fabric) can be used. Good. However, in the case of a cloth, a melting material (hot melt or the like) is sandwiched between the cloth and the member for forming the fastener. In addition, the member for forming a stopper is not limited as long as the stopper can be formed by heating and melting and the stopper can be welded to the sheet.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments.

Taking a male hook as a male stopper,
A mold used to mold the male hook is shown in FIG. 1 [perspective view (a), vertical sectional view (b)]. The male hook molding die 10 is for molding a male hook 40 having a form as shown in FIG. The male hook 40 is
It comprises a shaft portion 41 and an outward flange portion 42 provided at the tip of the shaft portion 41.

The mold 10 has a cylindrical shape, and has a hollow portion 11 that complements the shaft portion 41 of the male hook 40 from the contact surface of the hook forming member 35 (see FIG. 3) toward the inside. Then, following the hollow portion 11, the hollow portion 12 which complements the outward flange portion 42 of the male hook 40 is provided.

A male hook 40 is formed by using the mold 10
As shown in FIG. 3, an ultrasonic device 70 is used as a welding device to form and weld a sheet constituting a bag, and a sheet 30 is placed below a vertically movable horn 71 of the ultrasonic device 70. And a hook forming member 35 is disposed further below the sheet 30, and the mold 10 is disposed below the member 35.
Place. Of course, the horn 71 and the center of the mold 10 and the horn
1. The sheet 30, the member 35 and the mold 10 are aligned.

Then, the horn 71 is moved downward, the sheet 30 and the member 35 are sandwiched between the horn 71 and the mold 10, and ultrasonic waves are applied to the sheet 30 and the member 35 through the horn 71. Then, heat is generated by the vibration of the ultrasonic wave, and the member 35 is heated and melts into the cavity portions 11 and 12 of the mold 10, and at the same time, the sheet 30 and the member 35 are welded. After cooling for a while in this state, the horn 71 is moved upward, and the sheet 30 is pulled out of the mold 10 to complete the male hook 40 welded to the sheet 30 (FIG. 4A).

Around the welded portion 45 of the hook 40 in the sheet 30, a portion 35 unnecessary for forming the hook 40 is formed.
Since the unnecessary portion 35a is removed since the portion a remains, the male hook 40 formed and welded to the sheet 30 is completed (FIG. 4B).

Next, a mold used to mold the female hook is shown in FIG. 2 (perspective view (a), vertical sectional view (b)).
The female hook molding die 20 is for molding a female hook 50 having a form as shown in FIG. The female hook 50 is provided on the opening side of the hollow shaft portion 51 into which the shaft portion 41 and the outward flange portion 42 of the male hook 40 can be inserted. An outwardly facing brim portion 52 (not shown in detail in FIG. 5) is engageable with the outwardly facing brim portion 42.

The mold 20 is formed by connecting the cavity 21 that complements the cavity shaft 51 of the female hook 50 with the hook molding member 36.
(See FIG. 3) from the contact surface to the inside, and following the cavity 21, there is a cavity 22 that complements the inward brim 52 of the female hook 50.

The female hook 50 is formed by using the mold 20.
The forming and welding of the sheet constituting the bag is performed in the same manner as the forming and welding of the male hook 40. That is, in FIG.
The sheet 30 is replaced with the sheet 31 and the hook forming member 36 is used.
At the same time, the female hook 50 is molded from the member 36 and the member 36 is welded to the sheet 31. Then, by removing unnecessary portions of the member 36 around the welded portion 55 after molding and removal, the female hook 50 molded and welded to the sheet 31 is completed (FIG. 5).

As described above, the male hook 40 and the female hook 50 are welded to the sheets 30 and 31 at the same time as they are formed from the hook forming members 35 and 36, respectively, so that the hook can be formed and welded at once. The hook can be formed efficiently and inexpensively.

By the way, at the time of the hook molding, depending on the material of the hook molding member, the hooks 40, 50 are connected to the mold 10,
20 may be difficult to pull out. In that case, the male and female hook molding dies 10, 20 may be configured as shown in FIGS. 6 and 7, respectively.

First, the male hook molding die 10 shown in FIG. 6A has a cylindrical outer portion 1 movable in the vertical direction (the direction of the arrow).
0A and an inner portion 10B inserted through the outer portion 10A. The outer portion 10A is a hollow portion 15 that penetrates from the contact surface of the hook-forming member to the opposite surface (vertical direction).
The cavity 15 has an inward flange 16 at an opening on the contact surface side. The inner part 10B is the outer part 10A
And a projection 17 that can be inserted into the opening of the cavity portion 15 on the contact surface side. At the time of molding, the outer portion 10A and the inner portion 10
The positional relationship with B is as shown in FIG.

At the time of forming the male hook [FIG. 6 (b)], the hook forming member 35 melts into the cavity of the mold 10, and the male hook comprising the shaft 41 and the outward flange 42 is formed. 4
0 is molded. However, here, the convex portion 1 of the inner portion 10B is used.
Due to the presence of 7, the shaft 41 becomes a cavity. When the male hook 40 is removed from the mold 10, the outward flange 42 of the male hook 40 is caught by the inward flange 16 of the outer portion 10 </ b> A, and it is difficult to pull out the male hook 40 from the mold 10.

Therefore, as shown in FIG. 6 (c), the outer part 10A is moved upward with respect to the inner part 10B when the outer hook 10 is pulled out, so that a gap is formed around the outward flange 42 of the male hook 40. This causes the outward flange portion 42 to be deformed inward and to be easily detached from the inward flange portion 16 of the outer portion 10A. As a result, the male hook 40 can be easily pulled out from the mold 10. .

FIG. 7A shows a female hook molding die 20.
Is composed of a cylindrical outer portion 20A and an inner portion 20B which is inserted in the outer portion 20A and is movable in the vertical direction (the direction of the arrow). The outer portion 20A has a cavity 25 that penetrates from the contact surface of the hook-forming member on the opposite side (vertical direction) from the contact surface, and is closer to the inside than the opening of the cavity 25 on the contact surface side. Has an inward-facing brim portion 26. Inside part 20B
Is the cavity 25 rather than the inward flange 26 of the outer part 20A.
A shaft portion 28 having a circumferential groove 27 is provided on the opening side. At the time of molding, the positional relationship between the outer portion 20A and the inner portion 20B is shown in FIG.
(A).

At the time of forming the female hook [FIG. 7 (b)], the hook forming member 36 melts into the cavity of the mold 20, and the female hook comprising the cavity shaft 51 and the inward flange 52 is formed. The shaped hook 50 is formed. When removing the female hook 50 from the mold 20, the female hook 50 has an inward flange 52.
Is caught in the circumferential groove 27 of the inner portion 20B, and the female hook 5
0 is difficult to pull out from the mold 20.

Therefore, as shown in FIG. 7 (c), the inner portion 20B is moved upward with respect to the outer portion 20A when the female hook 50 is pulled out, so that a space is formed around the inward brim portion 52 of the female hook 50. By causing the inward brim portion 52
As a result, the female hook 50 can be easily pulled out from the mold 20 as a result of being easily deformed outward and coming off the peripheral groove 27 of the inner portion 20B.

On the other hand, the male hook 40 and the female hook 50
Is preferably more strongly welded to the sheets 30, 31 from the viewpoint of durability and the like. Fig. 6
In the male hook molding die 10 shown in (a), the convex portion 17 is provided on the inner portion 10B. When the convex portion 17 is provided, the shaft portion 41 of the male hook 40 becomes a cavity, but the shaft portion 41 is more easily deformed, and as shown in FIG. It becomes easy to pull out from the mold 10.

Further, when the convex portion 17 is provided on the inner portion 10B, a greater pressure is applied to the sheet 30 and the hook forming member 35 as shown by the arrow in FIG. Can be firmly welded. Further, since the shaft portion 41 is formed as a cavity, the required amount of the hook forming member 35 can be reduced, and the material can be saved.

Of course, as shown in FIG. 9A, the convex portion 17 may not be provided on the inner portion 10B of the mold 10 (similar to the embodiment of FIG. 1). (B)], since the shaft portion 41 of the male hook 40 does not become a cavity,
7, the shaft portion 41 is less likely to be deformed, and the male hook 40 is less likely to be pulled out of the mold 10.

On the other hand, a male hook 40 and a female hook 50
However, by removing the hook forming members 35 and 36 larger than the shaft portion 41 of the hook 40 and the cavity shaft portion 51 of the hook 50, respectively, the hook 4 is formed.
The welding area between 0,50 and the sheets 30,31 can be increased. As a contrivance, in the male hook molding die 10 shown in FIG. 10, the outer portion 10 </ b> A has an annular projection 18 around the contact surface of the hook molding member 35. The height d of the annular projection 18 is set smaller than the thickness t of the member 35.

By providing the annular projection 18 on the end face of the outer part 10A, a circular depression is formed on the end face of the outer part 10A. Therefore, the hook forming member 35 has a hook (shaded area) up to the depression. This is a necessary part for molding, and the welding area becomes large.

Since the height d of the annular projection 18 is smaller than the thickness t of the member 35, the hatched portion of the hook forming member 35 is poured into the cavity of the mold 10 during the molding shown in FIG. (Arrow) works. As a result, the member 35
The required thickness of the male hook 40 can be reduced, and not only the material can be saved, but also the pressure increases, so that the male hook 40 can be welded to the sheet 30 more firmly. Furthermore, the unnecessary portion of the member 35 for forming the hook forming member 35 can be easily blown off by the annular protrusion 18, so that the unnecessary portion of the member 35 remaining on the sheet 30 after forming and taking out can be easily removed.

Of course, the point that the annular projection 18 is provided on the end surface of the outer portion 10A of the male hook molding die 10 may be similarly provided on the end surface of the outer portion 20A of the female hook molding die 20, The same operational effects as above can be obtained.

Incidentally, for example, the male hook molding die 10
In the case where the annular projection 18 is not provided on the end face of the outer portion 10A, the hatched portion 35 'of the hook forming member 35' flowing into the cavity of the mold 10 (necessary for male hook forming) as shown in FIG. Part) becomes narrower, so member 3
It is necessary to increase the thickness of 5 ', so that unnecessary portions of the member 35' are increased, and the material is wasted. Of course, the welding area is also reduced.

In the male hook molding die 10 shown in FIG. 6, a gap is formed by moving the outer portion 10 A when the male hook 40 is taken out, and the male hook 40 is deformed and pulled out from the mold 10. Easy to use, male hook 40
The greater the degree of outward protrusion of the outwardly facing collar portion 42,
It becomes difficult to pull out. Therefore, as shown in FIG. 13 (a perspective view of one part (a), a perspective view of the other part (b)) and FIG.
The mold 10 may be composed of two parts, one part 10C and the other part 10D.

The mold 10 shown in FIG. 13 is a form in which a cylindrical one is vertically divided into two parts, one part 10C and the other part 1C.
0D has a symmetrical shape, and can be rotated in the direction of the arrow around the fulcrum P (FIG. 14A).
Can be opened and closed. The one part 10C and the other part 10D are respectively a cavity part 15 and an inward brim part 16.
And a half portion of the convex portion 19. The protrusion 19 is provided in the mold 10.
Is not large enough to be caught by the male hook 40 during opening and closing. In addition, although the convex part 19 does not need to be provided, it is better to provide it in order to make the hook forming member thinner and increase the pressure as described above.

In this mold 10, one part 10C and the other part 10D are joined so that there is no gap as shown in FIG. Then, the male hook 40 having the shaft portion 41 and the outward brim portion 42 is formed by heat molding [FIG. 14 (b)]. Male hook 40 after molding
When removing from the mold 10, the one part 10C and the other part 10D are respectively rotated about the fulcrum P in the direction of the arrow as shown in FIG. Then, since the mold 10 is greatly opened, the male hook 40 welded to the sheet 30 can be easily taken out without forcibly pulling out the male hook 40. Also, since the male hook 40 can be easily and easily taken out, the degree of protrusion of the outwardly directed collar portion 42 to the outside can be increased, and the fitting strength between the male hook 40 and the female hook 50 can be increased. it can.

The male hook 40 and the female hook 50 as described above can be applied not only to a bag as shown in FIG. 19 but also to a belt-shaped sheet as shown in FIGS. FIG.
In FIG. 5A, the male hook 40 is attached to one end of the belt-shaped sheet 60, and the female hook 50 is attached to the other end. In this way, the band-shaped sheet 60 can be stopped in a ring shape as shown in FIG. FIG.
In (a), the male hook 40 is attached to one end of the same surface of the belt-shaped sheet 61, and the female hook 50 is attached to the other end. In this case, the belt-shaped sheet 61 can be stopped in a shape as shown in FIG.

It is not always necessary to use the male hook 40 and the female hook 50 as a pair. As shown in FIG. 17A, the male hook 40 is attached to one end of the belt-shaped sheet 62, and the other end is used. In place of the female hook 50, a plurality (of course, one) of holes 63 may be formed. In this case, the hole 63 is set to be slightly smaller than the outward-facing portion 42 of the male hook 40. By fitting the male hook 40 into an arbitrary hole 63, the band-shaped sheet 62 can be stopped in a ring shape ((b) of FIG. 17).

Alternatively, in FIG. 18 showing a bag similar to that of FIG. 19, a hole 67 may be formed in the lid 65a of the sheet 65, and the male hook 40 may be attached to the sheet 66. The sheets 65 and 66 are joined at a welded portion 68.

In addition, when a cloth (woven cloth or non-woven cloth) is used for the sheet and a hook (hot melt) is sandwiched between the cloth and the hook forming member, the hook can be attached to the cloth.

On the other hand, the male and female hook molds 10 and 20 shown in the above-described embodiment have a cylindrical shape that is most easily processed and handled. However, the male and female hooks 40 and 20 are not limited to the cylindrical shape. As long as the female hook 50 and the female hook 50 can be engaged with each other, a complex shape may be used in addition to a square pillar shape or a triangular pillar shape. In addition, by putting a logo on a part of the mold, it is possible to form a stopper with a logo. Further, the male and female hooks 40, 5 of the above embodiment are used.
0 shows the simplest structure and the form that can be easily attached and detached. However, any form can be used as long as the male hook 40 and the female hook 50 can be attached and detached. What is necessary is just to manufacture the mold for shape hook molding.

[0053]

As described above, according to the method of the present invention, a fastener is formed from a fastener-forming member and, at the same time, the fastener is welded to the sheet. Not only is it necessary to prepare a member for forming a fastener, but also the forming and welding of the stopper can be performed at once, and the stopper can be formed efficiently and at low cost.

On the other hand, according to the mold of the present invention, the above method can be performed.

Further, by forming the mold with an outer portion and an inner portion and making one of the movable portions, the stopper after molding can be easily removed from the mold.

Further, by providing an annular projection having a height smaller than the thickness of the fastener-forming member around the abutment surface of the fastener-forming member on the outer side, the welding area between the fastener and the sheet is increased. Not only can it be welded, but also the fastener and the sheet can be welded more firmly. In addition, the thickness of the fastener forming member can be reduced, and the material can be saved. In addition to this, the unnecessary part of the member for forming the fastener can be easily removed after the molding and removal.

[Brief description of the drawings]

FIG. 1 is a perspective view (a) and a longitudinal sectional view (b) of a mold used for molding a male hook as a stopper.

FIG. 2 is a perspective view (a) and a longitudinal sectional view (b) of a mold used to mold a female hook as a stopper.

FIG. 3 is a view for explaining a method of forming and welding a hook on a sheet using the molds of FIGS. 1 and 2;

FIG. 4A is a perspective view of a sheet when a sheet on which a male hook is formed and welded is removed from a mold, and FIG. 4A is a perspective view of the sheet when an unnecessary portion of a hook-forming member is removed from the sheet. b).

FIG. 5 is a perspective view of the sheet when a sheet on which a female hook is formed and welded is removed from a mold, and an unnecessary portion of a hook forming member is further removed.

FIGS. 6A and 6B are a longitudinal sectional view showing an example of a mold for forming a male hook, a longitudinal section view showing a state in which a male hook is formed using the mold, and a mold shown in FIG. It is a longitudinal cross-sectional view (c) which shows a mode when removing the male hook after shaping | molding from FIG.

FIG. 7 is a longitudinal sectional view showing an example of a female hook molding die, FIG. 7B is a longitudinal sectional view showing how a female hook is molded using the same mold, and FIG. It is a longitudinal cross-sectional view (c) which shows a mode at the time of taking out the female hook after shaping | molding from FIG.

FIG. 8 is an enlarged vertical sectional view showing a state in which a male hook is formed using the male hook forming die shown in FIG. 6;

FIG. 9 is a longitudinal sectional view (a) showing another example of a male hook molding die, and a longitudinal sectional view (b) showing a state in which a molded male hook is taken out from the mold.

FIG. 10 is an enlarged longitudinal sectional view for explaining a portion necessary for molding a hook molding member with respect to the male hook molding die shown in FIG. 6;

11 is an enlarged vertical cross-sectional view illustrating the flow of the hook-forming member into the cavity of the mold when the male hook is formed using the male-hook forming mold shown in FIG.

12 is an enlarged vertical cross-sectional view illustrating a portion required for forming a hook-forming member with respect to a modified example of the male hook-forming die shown in FIG.

FIG. 13 is a perspective view (a) of one part and a perspective view (b) of the other part in still another example of the male hook molding die.

14 is a longitudinal sectional view (a) of the male hook molding die shown in FIG. 13, a vertical sectional view (b) showing a state in which a female hook is molded using the same mold, and FIG. It is a longitudinal cross-sectional view (c) which shows a mode at the time of taking out the female hook after shaping | molding from a type | mold.

FIG. 15A is a perspective view of a band-shaped sheet having a male hook attached to one end and a female hook attached to the other end, and shows a state in which the band-shaped sheet is fixed in a ring shape. It is a perspective view (b).

FIG. 16 is a perspective view of a belt-like sheet having a male hook attached to one end of one surface and a female hook attached to the other end,
FIG. 4B is a perspective view showing a state where the belt-shaped sheet is stopped.

FIG. 17A is a perspective view of a band-shaped sheet having a male hook attached to one end of one surface and a plurality of holes formed in the other end, and a state in which the band-shaped sheet is fixed in a ring shape. FIG.

FIG. 18 is a perspective view of a bag made from a sheet with a male hook attached and a sheet with holes.

FIG. 19 is a perspective view of a bag according to a conventional example made from sheets to which hooks are already attached.

FIG. 20 is a perspective view (a) showing a state in which an existing hook is attached to one sheet, and a perspective view showing a state in which an existing hook is attached to the other sheet in the bag as shown in FIG. 19; b).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Male hook molding die (male stopper molding die) 10A, 20A Outer part 10B, 20B Inner part 10C One part 10D The other part 11, 12 Cavity part 15, 25 Cavity part 16, 26 Inside Orientation flange portion 17, 19 Convex portion 18 Annular projection 20 Female hook molding die (Female stopper molding die) 21, 22 Cavity 27 Peripheral groove 28 Shaft 30, 31 Sheet 35, 36 Hook molding Member (member for forming a fastener) 40 male hook (male stopper) 41 shaft portion 42 outward flange 50 female hook (female stopper) 51 cavity shaft portion 52 inward flange 70 ultrasonic wave Equipment (welding equipment)

Claims (9)

[Claims] A stopper forming member is disposed on one side of a sheet, a stopper forming mold is applied to the stopper forming member, and a welding device is attached to a mold relative portion on the other side of the sheet. The sheet and the member are sandwiched between the tip and the mold by contacting the tip of the sheet, and the sheet and the member are heated at the tip of the welding device, thereby forming a stopper from the member and welding the stopper to the sheet. A method for forming and welding a fastener. 2. A male stopper comprising a shaft portion and an outward flange portion provided at a tip of the shaft portion.
The method of claim 1 wherein said male stop is fitted into a hole formed in said sheet. 3. The stopper according to claim 1, wherein the stopper comprises a male stopper comprising a shaft portion and an outward flange provided at a tip of the shaft portion, and a shaft portion and an outward flange portion of the male stopper. A female stopper comprising an insertable cavity shaft portion and an inward flange portion provided on the opening side of the cavity shaft portion and capable of engaging with the outward flange portion of the male stopper. 2. The method for forming and welding a fastener according to claim 1, wherein the male fastener and the female fastener are fitted to each other. 4. A mold used for forming and welding a fastener from a fastener-forming member to a sheet, wherein the fastener has a shaft portion and an outwardly-facing member provided at a tip of the shaft portion. A male stopper comprising a collar portion, and having a cavity complementary to the shaft of the male stopper from the contact surface of the stopper forming member toward the inside; A metal mold for forming a fastener, characterized by having a hollow portion that complements an outwardly facing collar portion of a male stopper. 5. A cavity portion penetrating from a contact surface of the fastener forming member to a surface opposite to the contact surface, and an inward-facing portion is formed at an opening of the cavity portion on the contact surface side. It is characterized by comprising a movable cylindrical outer portion and an inner portion which is inserted into a cavity portion of the outer portion and has a convex portion which can be inserted into an opening on the contact surface side of the cavity portion. The metal mold for forming a fastener according to claim 4. 6. The stopper according to claim 5, wherein the outer portion has an annular projection having a height smaller than the thickness of the stopper forming member around the contact surface of the stopper forming member. Tooling mold. 7. A mold used for forming and welding a fastener from a fastener-forming member to a sheet, wherein the fastener has a shaft portion and an outwardly-facing member provided at a tip of the shaft portion. A male stopper comprising a collar portion, and having a cavity complementary to the shaft of the male stopper from the contact surface of the stopper forming member toward the inside; A male stopper forming mold having a cavity that complements the outwardly facing flange of the male stopper; and the stopper is capable of inserting a shaft portion and an outwardly facing flange of the male stopper. A female stopper comprising a cavity shaft portion and an inward flange portion provided on the opening side of the cavity shaft portion and capable of engaging with the outward flange portion of the male stopper. A cavity portion complementary to the cavity shaft portion of the fastener, from the contact surface of the fastener forming member toward the inside, and the cavity portion is followed by the inward direction of the female fastener. Stop mold, wherein the female fastener mold, in that it is configured with a cavity portion complementing flange portion. 8. A cavity portion penetrating from a contact surface of the member for forming a fastener to a surface opposite to the contact surface, and an inward-facing portion is formed at an opening of the cavity portion on the contact surface side. A male stopper comprising: a movable tubular outer portion; and an inner portion that is inserted into the cavity portion of the outer portion and has a convex portion that can be inserted into the opening on the contact surface side of the cavity portion. A molding die, having a cavity portion penetrating from the contact surface of the stopper molding member to the opposite surface, and a portion closer to the inside than the opening of the cavity portion on the contact surface side. A cylindrical outer portion having an inward flange, and a shaft portion which is inserted into the cavity of the outer portion and has a circumferential groove closer to the opening of the cavity than the inward flange of the outer portion. The fastener-forming mold according to claim 7, comprising: a female fastener-forming mold having an inner portion. 9. An outer peripheral portion of the male and female stopper forming dies is formed around an abutting surface of each of the stopper forming members with an annular projection having a height smaller than the thickness of the stopper forming member. 9. The metal mold for forming a fastener according to claim 8, comprising: