JPH09123210A - Mold apparatus for mounting string stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to rigidly mount a stopper by effectively holding a string in a mold by adapting itself to the form of the string. SOLUTION: An upper mold 1 is mounted at a stationary base 11, which is mounted at a stationary platen 17 via a clearance C. A lower mold 2 is mounted at a movable base 12, which is mounted at a movable platen 18 via a clearance C. On the other hand, push rods 7, 8 each having elasticity and being telescopically movable are provided in the cavity 3, and recesses 14 are provided at the end faces of the rods 7, 8. In the case of mold clamping, the rods 7, 8 are elastically projected by adapting themselves to the thickness of a string to effectively sandwich the string. Molten liquid is not oozed to the recess 14, a product of high quality having no flash is molded, the string is easily expanded in the recess 14 to make it possible to rigidly mount a stopper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a string used as a carrying cord for a mobile phone, a transistor radio, a second bag, a folding umbrella, or a small one made of a synthetic resin for a pull handle of a slider for a slide fastener. The present invention relates to a molding die device for mounting the stopper.

[0002]

2. Description of the Related Art Conventionally, when manufacturing a cord for a small item such as a folding umbrella or a transistor radio of this kind, the cord is formed into an endless shape by folding the ends of the cord. There is a mold shown in FIGS. 14 and 15 as a mold used for butt-to-polymerize, temporarily fixing the butt-overlapped polymerized portion, and forming a synthetic resin string connector by injection molding.

That is, string guide grooves are provided on both sides of the cavities of the upper mold and the lower mold, and long ridges are projected into the cavities integrally with the mold toward the guide grooves. A molding die for a string connector that inserts synthetic resin by sandwiching the end-to-end overlapping portions of the string to be placed from above and below is disclosed in Japanese Examined Patent Publication 6
No. 0-58005.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The known molds for forming a string coupling tool mentioned in the preceding paragraph are such that the ridges for holding the strings protrude into the cavities of the upper mold and the lower mold. Since it is integrally formed with the ridge, the protrusion amount of the ridge portion does not change constantly, and therefore, it is not possible to accurately cope with the difference in the thickness or hardness of the cord. As a result, due to variations in the thickness and hardness of the string, the molten resin liquid penetrates into the sandwiched portions of the ridges, causing burrs, and the burrs are scattered on the surface and impair the appearance of the product. .

Further, since the ridge portion cannot correspond to the thickness of the cord, it may affect the mounting strength for molding the connector on the cord depending on the case, and as a result, the quality of the product may be deteriorated. There is also a problem from the top.

The present invention has been made in consideration of the above-mentioned problems, and the invention according to claim 1 is to be installed in the cavity of a mold when a stopper or the like is attached to a cord by integral injection molding means. By using a presser bar that has a movable type of protrusion for pinching the string, the stopper can be injection-molded in accordance with the thickness and hardness of the string, and it can be applied to various strings and is sturdy. The main object of the present invention is to provide a molding die device for attaching a cord stopper capable of molding a high quality product.

According to a second aspect of the present invention, in addition to the object of the first aspect of the present invention, both of the opposing pressing rods for pinching the cord are formed in a movable type so that the cord can be clamped more accurately and easily. It is an object to provide a molding die device for mounting a tool.

[0008] The invention described in claim 3 is claim 1 or 2.
In addition to the object of the invention described above, it is possible to immediately respond to any type of fastener in which the arrangement state of the cord is in any form such as series, parallel, or cross shape, and it is possible to respond to the diversification of the product and to expand the range of application of the product. It is an object of the present invention to provide a molding die device for attaching a cord stopper that can achieve the above.

According to a fourth aspect of the present invention, in addition to the object of the first, second or third aspect of the invention, the form of the tip of the presser bar for pinching the string disposed in the mold is specified, and the stopper is ejected. It is an object of the present invention to provide a molding die device for mounting a cord stopper, which is capable of molding a product having an excellent appearance, in which thread breakage, burrs, etc. never occur in the cord of the holding portion by the presser bar during molding. .

[0010] The invention according to claim 5 is the invention according to claims 1, 2, and 3.
Alternatively, in addition to the object of the invention described in 4, it is possible to increase the number of presser rods for pinching the cord arranged in the mold so that it can be reliably applied to the molding mounting of various kinds of fasteners, and the mounting strength is improved. An object of the present invention is to provide a molding die device for mounting a cord stopper that can be molded into a sturdy stopper.

[0011] The invention according to claim 6 is based on claims 1 and 2,
In addition to the object of the invention described in item 3, 4 or 5, the clamp rod for pinching the cord arranged in the mold is provided with elasticity so as to adapt to the thickness and hardness of the cord and clamp the cord appropriately. It is an object of the present invention to provide a molding die device for mounting a cord stopper that can realize the above.

[0012] The invention according to claim 7 is the invention according to claims 1 and 2,
In addition to the object of the invention described in 3, 4, 5 or 6, the pressing rod for pinching the cord arranged on the mold is provided with elasticity, and the elasticity provided to the pressing rod is easily adjusted. It is possible,
An object of the present invention is to provide a molding die device for mounting a cord stopper that can conform to the thickness and hardness of a cord to mold a high quality product.

The invention according to claim 8 is the invention according to claims 1, 2 and
In addition to the object of the invention described in 3, 4, 5, 6 or 7, a clearance can be installed between the base equipped with the mold and the fixed plate or the movable plate, and between the mold and the sprue bush to move the presser bar back and forth. In addition, it is an object of the present invention to provide a molding die device for attaching a cord stopper, which can reduce the impact at the time of the mold clamping operation, facilitate the separation of sprue, and improve the productivity.

The invention according to claim 9 is the invention according to claims 1, 2 and
In addition to the object of the invention described in 3, 4, 5, 5, 6, 7 or 8, it is possible to move the presser bar back and forth by providing a clearance between both the base equipped with the mold and the fixed platen and the movable platen. It is an object of the present invention to provide a molding die device for attaching a cord stopper, which is designed to further reduce the impact of the die clamping operation and improve the durability of the die.

[0015]

In order to achieve the above object, in the invention according to claim 1 of the present invention, the mold is a split mold, and the upper mold 1 and the lower mold 2 are in contact with each other, and A string guide groove 13 that communicates with the cavity 3 on the facing surface of the mold 1 and the lower mold 2.
Is provided, and pressing rods 7 and 8 for pinching the strings that project and face into the cavity 3 on the extension line of the guide groove 13 are provided in the upper mold 1 and the lower mold 2, and at least one of the pressing rods 7 and 8 can be moved back and forth. The main structure is a molding die device for attaching a cord stopper attached to the.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, both of the presser rods 7 and 8 for pinching the strings arranged in the upper die 1 and the lower die 2 of the die are cavities. 3 is a molding die device for attaching a cord stopper, which is opposed to the inside of the cord 3 in a freely movable manner.

The invention according to claim 3 is the invention according to claim 1 or 2.
In addition to the configuration of the invention described, a guide groove 13 for arranging a string that communicates with the cavities 3 of the upper mold 1 and the lower mold 2 in the mold.
Is a metal mold for attaching a cord stopper in which a plurality of engraving is appropriately provided on the facing surface of the upper die 1 and the lower die 2 and the pressing rods 7 and 8 are provided in the cavity 3 on the extension lines of the guide grooves 13. It is a mold device.

According to a fourth aspect of the present invention, in addition to the structure of the first, second or third aspect of the present invention, the holding rods 7 and 8 arranged in the cavity 3 of the mold have peripheral edge portions on their tip surfaces. On the other hand, it is a molding die device for mounting a cord stopper in which a concave portion 14 having a concave shape inside is formed.

The invention according to claim 5 is the invention according to claims 1, 2, 3
Or in addition to the constitution of the invention described in 4, the cavity 3 of the mold
The presser rods 7 and 8 arranged in the inside are a molding die device for mounting a cord stopper, which is provided in a plurality of opposed shapes on the upper die 1 and the lower die 2 corresponding to the guide grooves 13.

The invention according to claim 6 is the invention according to claims 1, 2 and
In addition to the constitution of the invention described in 3, 4, or 5, the holding rods 7, 8 arranged so as to be able to move forward and backward in the cavity 3 of the mold have springs 24 connected to their rear ends, and the holding rods 7, 8 are elastically attached to the holding rods 7, 8. It is a molding die device for wearing a cord stopper equipped with elasticity.

[0021] The invention described in claim 7 is based on claims 1, 2,
In addition to the constitution of the invention described in 3, 4, 5 or 6, the spring 24 arranged at the rear end of the pressing rods 7 and 8 arranged so as to be able to move forward and backward in the cavity 3 of the mold is It is a molding die device for attaching a string stopper, which is formed so as to be interposed between the adjusting screw 23 for adjustment and to adjust the elasticity given to the pressing rods 7 and 8.

The invention according to claim 8 is the invention according to claim 1,
In addition to the constitution of the invention described in 3, 4, 5, 6 or 7, the bases 11 and 12 equipped with the upper mold 1 and the lower mold 2 of the mold,
The base 11 mounted on the fixed plate 17 and the movable plate 18 and on the side where the sprue bush 15 is installed has clearances between the fixed plate 17 and the movable plate 18, and between the upper mold 1 or the lower mold 2 of the mold and the sprue bush 15, respectively. It is a molding die device for attaching a string stopper installed with C so as to be able to move forward and backward.

The invention according to claim 9 is the invention as defined in claims 1, 2 and
In addition to the constitution of the invention described in 3, 4, 5, 6, 7 or 8,
Bases 11 and 12 equipped with upper mold 1 and lower mold 2 of the mold
Is mounted on the fixed platen 17 and the movable platen 18, and each base 1
Numerals 1 and 12 are molding die devices for attaching a cord stopper, which are installed so as to be movable back and forth by providing a clearance C between the fixed plate 17 and the movable plate 18, respectively.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a molding die device for mounting a cord stopper according to the present invention will be specifically described below with reference to the drawings.

As shown in FIGS. 1 to 3, in the molding die apparatus for mounting the cord stopper of the present invention, the upper die 1 and the lower die 2 having the cavity 3 are mounted on the fixed base 11 by mounting bolts. A gate 4 that is attached to the recess and the recess of the movable base 12 and that communicates with the cavity 3 in the upper mold 1.
Is provided.

The upper die 1 and the lower die 2 are in contact with each other at the peripheral portion of the cavity 3, and one side of the upper die 1 and the lower die 2 on the contact surface, for example, as shown in FIG. A guide groove 13 for arranging the string B is recessed. In the cavity 3 on the extension line of the guide groove 13, guide holes 9 and 10 are formed in the upper mold 1 and the lower mold 2, respectively, into which presser bars 7 and 8 for holding the cord B from both upper and lower sides can be inserted. There is.

The guide groove 13 is increased not only on one side of the facing peripheral portion of the cavity 3 but also on the arrangement of the cord. For example, as shown in FIG. 10, since the strings B are arranged in series and joined together, they are also installed on the opposite bank. Also, as shown in FIG.
Since the strings B are arranged in parallel and spliced, a guide groove 1 is provided on one side.
In some cases, two cords 3 are arranged side by side. Further, as shown in FIG. 12, since the cords B are arranged in a cross shape and joined, the guide groove 13 is engraved on the four peripheral portions, and the shape of the stopper and the cord. Depending on the arrangement, the guide groove 13 can be appropriately deformed and installed. The shape of the guide groove 13 is preferably flat.

The guide holes 9 and 10 are preferably provided in the cavity 3 close to the guide groove 13 in terms of gripping the string B. Presser bars 7, 8 inserted into the guide holes 9, 10
As shown in FIGS. 4 and 5, the peripheral edge portion of the tip end surface is formed in a convex shape, and the concave recessed portion 14 is formed so that the inner side is depressed, and the shape is formed so that the string B arranged in the mold can be accurately grasped. There is.

A fixed base 11 equipped with the upper mold 1
Is provided with an insertion hole 16 into which a sprue bush 15 communicating with the gate 4 is inserted, and is attached to an upper fixed plate 17 by a stripper bolt 19, and
The stripper bolt 19 has a coil spring 20 interposed between the head of the stripper bolt 19 and the fixed base 11.
A fixed clearance C is provided between the fixed base 11 and the fixed plate 17 to impart elasticity to the fixed base 11.

Since the presser bar 7 is arranged in the cavity 3 of the upper mold 1 so as to be movable back and forth, the head 2 of the presser bar 7 is fixed to the fixed platen 17.
1 is provided with a concave hole-shaped screw hole 22, an adjusting screw 23 is screwed into the screw hole 22, and a coil spring 24 is interposed between the screw head 22 and the head 21 of the pressing rod 7. Give elasticity to. Further, a sprue bush 15 communicating with the gate 4 is mounted, and a guide pin 25 is fixed.

The movable base 12 equipped with the lower mold 2 is movably attached to the movable platen 18 with a clearance C by a stripper bolt 26, and a guide pin 25.
A guide pin bush 27 that can be inserted into and removed from is provided. On the other hand, a return pin 28 is arranged between the movable base 12 and the movable platen 18, and a coil spring 29 is interposed between the movable pin 12 and the movable platen 18 and a clearance C is provided between the movable base 12 and the movable platen 18. The presser bar 8 is fixed at its lower end to the movable platen 18.

Although the vertical molding die apparatus has been described above, the molding die apparatus may be a horizontal type. It may be mounted on the upper die or the movable board, and on the lower die or the fixed board, respectively. Further, the upper mold 1 and the lower mold 2 used are formed as unit molds and are formed so that they can be replaced appropriately. The form of the string applicable to this molding die device is a flat string,
A round string, a woven tape, a braid, or a braid can be applied. The material of the fastener to be molded is polyamide,
Molding is performed using a synthetic resin such as polyacetal, polypropylene, or poly (ethylene terephthalate), or a metal.

The operation of the mold is performed by moving the movable platen 1 with respect to the fixed platen 17.
8 moves, and the upper mold 1 and the lower mold 2 are brought into contact with each other to form the cavity 3. At that time, the string B is placed in the guide hole 13, and for example, the string B is clamped at a predetermined portion by the upper mold 1 and the lower mold 2 as shown in FIG. , 8 in the process of clearance C
Projecting inward, holding the end of the string B, and holding the spring 24
The elastic force of the presser bar 7 urged by the force further clamps the string B, and the edge portion of the string B is press-fitted and held in the concave recess portion 14 of the presser bars 7 and 8. After that, a synthetic resin melt is injected into the cavity 3 to mold the stopper.

The pressing strength of the presser bar 7 can be adjusted by adjusting the adjusting screw 23 to adjust the degree of elastic force. Then, during injection molding, the molten liquid of the synthetic resin is prevented from entering the recessed portion 14 by the protruding portions of the peripheral edges of the pressing rods 7 and 8.
The fastener of a predetermined shape is formed on the cord.

Next, in the embodiment shown in FIGS. 6 to 8, two pairs of presser rods 7 and 8 arranged on the upper die 1 and the lower die 2 of the die are installed in one guide groove 13 respectively, and each of them is repulsive. It is equipped with nature. The elasticity is provided by interposing coil springs 24 between the upper die 1 and the fixed base 11 and between the lower die 2 and the movable base 12 so as to always project into the cavities 3 of the upper die 1 and the lower die 2. ing.

As a concrete structure, the holding rods 7 and 8 having an oval cross section are provided with a recess 14 at the tip and an enlarged head 21 at the rear end. The upper mold 1 and the lower mold 2 are provided with guide holes 9 and 10 through which the presser rods 7 and 8 are inserted, and a recessed hole portion 30 having a size into which the head portion 21 can be fitted is provided at the end portion thereof. It is formed so as to regulate the movement of the portion 21.

Fixed base 11 and movable base 1
2 has a screw hole 22 in which a screw having the same diameter as the recessed hole portion 30 is threaded.
Is provided, and the adjusting screw 23 is screwed into the screw hole 22,
Between each adjusting screw 23 and the head 21 of the presser bars 7 and 8,
A coil spring 24 is interposed so that the presser bars 7 and 8 are constantly ejected into the cavity 3, and the degree of ejection is the adjusting screw 2
It can be adjusted by 3.

Finally, FIG. 13 shows an example of the pull tab of the slider for a slide fastener of one embodiment, which is molded based on the molding die device described above. In this pull tab, a string B is folded in two, and a stopper 32 having a connecting ring 31 at its end is injection-molded. A through hole portion 33 is formed at an appropriate place in the stopper 32, and the surface of the string B is bulged in a protruding shape with respect to the through hole portion 33, so that the stopper 32 is attached from the string B depending on the raised form. I can't escape. Moreover, since the synthetic resin does not exude into the through-hole portion 33 to form burrs, a pull tab having a good appearance can be formed.

[0039]

The molding die for mounting the cord stopper of the present invention is
The configuration is as described above, and the configuration has the following effects.

According to the first aspect of the present invention, a cord guide groove communicating with the cavity is provided on the facing surface of the upper die and the lower die, and a pressing rod protruding into the cavity is provided. At least one of the pressing rods is provided. By facing oppositely,
In the molding process, the cord is first clamped in the guide groove, and then the cord is clamped by advancing the presser bar, so that the presser bar can be operated according to the form, that is, shape, thickness and hardness of the cord. , The string can be properly clamped to facilitate the molding. Further, there is an effect that the attachment strength of the cord can be improved and a product having a good appearance in which burrs do not occur can be formed.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the presser bar arranged in the upper die and the lower die is
By arranging both of them so as to be able to move forward and backward, there is an effect that the sandwiching of the string can be equally grasped from both sides, and more accurately and easily sandwiched, and a well-balanced and well-formed product can be formed.

The third aspect of the present invention is the first or second aspect.
In addition to the effects of the invention described above, a plurality of guide grooves communicating with the cavities of the upper mold and the lower mold are appropriately provided on the contact surface between the upper mold and the lower mold, and the presser bar is made to correspond to the guide groove. It is possible to easily mold even products that are in parallel or in a cross shape, the product application range can be expanded, and since the guide groove and presser bar are made to correspond, the attachment strength of the cord can be made uniform. There is an effect that it is possible to easily prevent the string from being pulled out.

According to a fourth aspect of the present invention, in addition to the effect of the first, second or third aspect of the present invention, the shape of the tip end surface of the presser bar is concave with respect to the peripheral edge and the inside is concave. Since the string is provided, the string can be accurately grasped without being influenced by the form of the string, and the molten liquid of the synthetic resin does not exude to the surface of the string at the time of molding to form a burr and the appearance is good. There is an effect that the product can be molded.

The invention according to claim 5 is the invention as defined in claims 1, 2, and 3.
Alternatively, in addition to the effect of the invention described in 4, a plurality of presser bars are provided vertically, and the presser bars correspond to the guide grooves, so that even a large-sized fastener can be easily molded, and the application range is expanded. In addition, it has the effect of improving the mounting strength and molding a sturdy product.

The invention according to claim 6 is the same as claim 1, 2 or
In addition to the effect of the invention described in 3, 4 or 5, a spring is arranged at the rear end of the presser bar to give the presser bar elasticity.
Since the pressing action of the presser bar is flexible, there is an effect that the cord is not damaged, and the thickness and hardness of the cord are adapted so that the cord can be uniformly and accurately gripped.

The invention according to claim 7 is the invention according to claims 1, 2 and
In addition to the effect of the invention described in 3, 4, 5 or 6, the spring disposed at the rear end of the presser bar is interposed between the presser bar and the adjusting screw to make it possible to adjust the elastic force of the presser bar. The elastic pressing of the rod can be very easily operated and adjusted, so that the thickness and hardness of the cord can be adapted, and a product of high quality can be molded.

The invention according to claim 8 is the same as claim 1, 2 or
In addition to the effects of the invention described in 3, 4, 5, 6 or 7, each base is mounted on a fixed platen and a movable platen, and the base on the sprue bush installation side is between the fixed platen or the movable platen and the mold. Since a clearance is provided between the mold and the sprue bush to allow it to move forward and backward, the mold absorbs the impact of the collision between the upper mold and the lower mold during mold clamping and withstands long-term use. There is an effect that it can be surely separated to improve productivity.

The invention according to claim 9 is the same as in claim 1,
In addition to the effects of the invention described in 3, 4, 5, 6, 7 or 8,
The base equipped with the upper mold and the lower mold is mounted on the fixed platen and the movable platen, and each base is installed so that it can move forward and backward by providing a clearance between both the fixed platen and the movable platen. The effect of the present invention is extremely remarkable, such as the effect of further mitigating the impact during operation and the effect that the mold can be used in a good condition for a long period of time.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view when a mold is opened in an injection molding die device.

FIG. 2 is a vertical cross-sectional view of the same injection molding die device during mold clamping.

FIG. 3 is a perspective view in which one mold of the injection molding mold device is partially cut.

FIG. 4 is a cross-sectional view of the upper mold and the lower mold in the same injection molding die device at the time of joining.

FIG. 5 is a cross-sectional view of the above-described injection molding die device when the presser bar is operating.

FIG. 6 is a cross-sectional view of the molding die device of another embodiment when the mold is opened.

FIG. 7 is a cross-sectional view of the same molding die device during mold clamping.

FIG. 8 is a plan view taken along the line AA in FIG.

FIG. 9 is a plan view showing an outline of a first embodiment of a molding die.

FIG. 10 is a plan view showing an outline of a second embodiment of a molding die.

FIG. 11 is a plan view showing the outline of a third embodiment of a molding die.

FIG. 12 is a plan view showing the outline of a fourth embodiment of a molding die.

FIG. 13 is a perspective view of a product.

FIG. 14 is an exploded perspective view of a known molding die.

FIG. 15 is a cross-sectional view of the same molding die.

[Explanation of symbols]

 1 Upper mold 2 Lower mold 3 Cavities 7 and 8 Presser bar 11 Base (fixed) 12 Base (movable) 13 Guide groove 14 Recessed recess 15 Sprue bush 17 Fixed plate 18 Movable plate 23 Adjustment screw 24 Spring B String C Clearance

Claims (9)

[Claims] 1. A mold is a split mold, and includes an upper mold 1 and a lower mold 2.
Is provided and a string guide groove 13 communicating with the cavity 3 is provided on the facing surface, and pressing rods 7 and 8 for pinching the strings that are opposed to the guide groove and project into the cavity 3 are provided on the upper die 1 and the lower die. A molding die apparatus for mounting a cord stopper, characterized in that at least one of presser bars (7, 8) is provided on mold (2) so as to be able to move forward and backward. 2. The molding for attaching a cord stopper according to claim 1, wherein the pressing rods 7 and 8 provided in the upper mold 1 and the lower mold 2 are arranged so as to be capable of advancing and retracting inside the cavity 3. Mold equipment. 3. A plurality of guide grooves 13 for string arrangement, which communicate with the cavities 3 of the upper mold 1 and the lower mold 2, are appropriately formed on the contact surface between the upper mold 1 and the lower mold 2 and the presser bar. The molding die device for mounting a cord stopper according to claim 1 or 2, wherein 7, 8 are arranged corresponding to the guide groove 13. 4. The presser bar 7, 8 has a tip end surface with respect to a peripheral edge.
The molding die device for mounting a cord stopper according to claim 1, 2 or 3, wherein a concave portion 14 having an inner concave shape is provided. 5. Presser bars 7, 8 installed in the cavity 3.
5. The molding die device for mounting a cord stopper according to claim 1, 2, 3 or 4, wherein a plurality of pairs are vertically provided in correspondence with the guide groove 13. 6. The molding die device for mounting a cord stopper according to claim 1, wherein the presser rods 7, 8 which can move forward and backward are provided with elasticity. 7. A spring 24 arranged at the rear end of the holding rods 7, 8 is interposed between the holding rods 7, 8 and the adjusting screw 23 to adjust the resilience of the holding rods 7, 8. The molding die device for mounting the cord stopper according to claim 1, 2, 3, 4, 5 or 6. 8. A base 1 equipped with an upper mold 1 and a lower mold 2.
1 and 12 are mounted on a fixed plate 17 and a movable plate 18, and the base 11 on the side where the sprue bush 15 is installed is the fixed plate 1.
7. The string stopper attachment according to claim 1, 2, 3, 4, 5, 6 or 7, wherein clearance C is provided between the movable plate 18 and the movable platen 18 and between the mold and the sprue bush 15 so as to be movable back and forth. Molding die equipment. 9. An upper mold 1 and a lower mold 2 provided with 11, 1
2. A fixed plate 17 and a movable plate 18 are attached to the base 2, and the bases 11 and 12 are installed so as to be movable back and forth by providing a clearance C between the fixed plate 17 and the movable plate 18, respectively. A molding die device for mounting the cord stopper according to 3, 4, 5, 6, 7 or 8.