JP2001022275A - Detaining piece using filmentary body in filament part and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detaining piece which allows the use of various materials in filament parts. SOLUTION: This detaining piece is constituted by molding head parts 1 and cross rod parts 2 arranged apart spacings from these head parts 1 of synthetic resins, arranging filamentary bodies as the filament parts 3 between the head parts 1 and the cross rod parts 2 and integrally connecting the head parts 1 and the cross rod parts 2 via the filamentary bodies. In such a case, the filamentary bodies are yarn formed by using synthetic fibers of polyester, nylon, polypropylene, acryl, etc., for which the twisted yarn formed by twisting three pieces of the yarn of usually 200 to 300d, more preferably 250d, at 200 to 250 turns/m is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a locking piece mainly used when a display tag (tag) such as a price tag is attached to a product, and a head, a filament portion and a horizontal bar as in the prior art. Instead of molding the entire part with synthetic resin,
An object of the present invention is to provide a locking piece using a filament for a filament portion.

[0002]

2. Description of the Related Art Generally, various display tags such as a price tag, a quality display tag, and a tag indicating a maker or the like are attached to a product. The locking piece that attaches this display tag to the product is also called "tag pin", and is formed by connecting the head, the horizontal bar, and the filament with each other to form an H-shape. Etc., and the filament portion is stretched at a predetermined magnification.

[0003] In contrast to the conventional display tag which is sewn to the product with a thread, the locking piece is pushed out from the tip of the hollow needle pierced into the product by a mounting machine or a gun to push out a horizontal bar portion from the back of the product. It is extruded into a T-shaped state and the display tag is supported by the head on the front side of the product,
This is an epoch-making means in that the operation of attaching the display tag can be performed quickly with one touch.

The locking pieces are not formed one by one, but 100 to 200 pieces are integrally formed as a set planted on a connecting rod, thereby increasing the efficiency of forming and improving the transportation and transportation. The loading of the mounting device can be performed efficiently.

[0005]

As described above, the conventional locking piece has a head portion on one side and a horizontal bar portion on the other side, with the filament portion as the center, and the whole is integrally formed into an H-shape. It is molded from resin, and this locking piece has a fairly firm shape.

On the other hand, since the filament portion is thick and brittle in the unstretched state, it is stretched 3 to 4 times immediately after forming the locking piece group so that the diameter becomes thinner and pliable immediately after the group of locking pieces is formed. However, when molding the original form of the filament by molding, the diameter of the filament is limited due to the restriction of the flow state of the molten resin, and no matter how thin it is, it must be as thin as a thread and flexible. Can not.
In addition, when the filament portion is stretched, the strength increases as the diameter decreases, and the filament portion becomes so strong as bristle or tex.

[0007] A) When the filament portion such as the bristle is inserted into the product, when the display tag supported by the head of the locking piece is pulled for some reason, the filament portion forms the product. The fabric or knitted fabric is stretched and stretched, possibly widening irreparably large holes.

[0008] As described above, the locking piece made entirely of synthetic resin is easy to manufacture and easy to use, but on the other hand, it damages the product inserted through the filament part, so that it is a delicate fiber product or eye. There are drawbacks in using it as a fixture for delicate textile labeling cards with a rough texture.

(B) The assembly of the locking pieces is formed by using a mold, and the filament portion is stretched by using the mold, but the head, the filament portion, and the horizontal bar portion are formed. Since they are integrally formed of synthetic resin, a relatively large mold is required. For this reason, a series of steps of closing the mold, filling and molding the resin into the cavity, cooling the mold, and opening the mold and discharging the molded product, that is, a long molding cycle, has a problem in productivity.

(C) Further, only one locking piece having a filament portion of one length can be manufactured with one mold.

For example, it is impossible to change the length of the filament portion from a short one to a long one, and it is extremely difficult to obtain a long one due to the restriction on the length of the flow of the molten resin.

D) The length of the filament portion that can be stretched is about 3 to 4 times that of the original shape. However, it is not possible to obtain a filament having a high speed and a uniform thickness because of the stretching behavior of the synthetic resin. Near possible.

(E) Recent products are produced from products of general quality to high-grade products using delicate fabrics that are transparent. So that the goods are damaged or look bad,
For example, it cannot be similar to a thread such as a gold thread or a silver thread or a flexible thread.

Therefore, the present inventor has provided a locking piece in which the head portion and the horizontal bar portion are formed of a synthetic resin, and a filament (yarn) made of a natural fiber or a synthetic fiber is used as a filament portion. This is the first purpose.

It is a second object of the present invention to provide a locking piece which does not damage even a delicate fiber product.

It is a third object of the present invention to provide a high-quality locking piece which has excellent decorativeness and is suitable for use in high-grade products. A fourth object of the present invention is to provide a manufacturing method which is excellent in productivity and can manufacture various types of locking pieces.

[0017]

The above and other objects, features and advantages of the present invention will be apparent from the following description.

1) A head and a horizontal bar arranged at a distance from the head are formed of synthetic resin, and a thread is disposed between the head and the horizontal bar. It is characterized in that a filament is used for a filament portion in which the head and the horizontal bar are integrally connected via a filament.

The thread is a thread using synthetic fibers such as polyester, nylon, polypropylene or acrylic, and is usually 200 to 300 d, preferably 25 to 300 d.
A yarn obtained by twisting three 0d yarns at a rate of 200 to 250 times / m is used.

As the thread body, one obtained by twisting and then heat-treating to fix the twist, or one subjected to surface coating treatment is used.

2) A head and a horizontal bar arranged at a distance from the head are formed of synthetic resin, and a thread is disposed between the head and the horizontal bar. A large number of locking pieces in which the head and the horizontal bar are integrally connected via a thread body are arranged in parallel, and are connected by two runner bars parallel to the head and the horizontal bar. Features.

(3) The filament according to claim 1, wherein the filament does not have a twisting torque, wherein the filament is used.

The non-torque yarn is obtained by heat-treating as described above, left-twisted and right-twisted yarns and heat-treated.
It is good to use what fixed the twist by coating on the surface.

Further, braids and woven braids can be used. In addition, a braid made by inserting a thin metal wire such as stainless steel at the center can be used. Further, a gold thread or a silver thread produced from a synthetic resin film may be used.

4) An elastic yarn is used for the yarn. As the elastic yarn, a polyurethane yarn is most suitable. However, a stretchable yarn obtained by combining this polyurethane yarn with an elastic yarn composed of other fibers can be used.

5) One runner bar cavity is formed on the mating surface of the mold, a horizontal bar cavity is arranged on one side of the cavity, and a cavity is arranged on the other side from the head. Connected via
Further, a thread guide path is formed orthogonally to the runner bar cavity, and a thread body is arranged in each of the thread guide paths. A step of filling the cavity with a resin, and after the resin has solidified, open the mold to allow the molded article to escape from the cavity, move the thread body a predetermined distance, close the mold, and then close the mold. A method of manufacturing a locking piece aggregate using a filament in a filament portion, wherein each cavity is filled with a resin.

6) Two runner bar cavities are arranged at an interval on the mating surface of the mold, and a head cavity is provided near one of these runner bar cavities, and a cavity of the other runner bar is provided. And a gate for supplying resin from a cavity of a runner bar located close to the head and the cavity of the horizontal bar portion, and further connecting the two runner bars. A thread guideway is formed in the center of the cavity between the head and the horizontal bar portion so as to intersect with the cavity of the head, and the thread material supplied into the guideway is formed together with the molding cycle of the head and the horizontal bar portion. A method of continuously manufacturing a group of locking pieces while transferring intermittently.

The locking piece according to the present invention uses a separate thread body without using a filament part integrally formed with a head and a horizontal bar part in a conventional filament part. In addition to eliminating the need for a stretching step like a piece,
It is possible to increase the length of this thread as needed. In addition, there is an advantage that a thread having different materials and different processing can be used.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) Embodiment 1 is a method for manufacturing locking pieces having different filament lengths using a single mold, and FIG. FIG. 2 is a perspective view of the locking piece aggregate T manufactured according to the present invention, and FIG. 2 is a side view of the same.

The locking piece assembly T includes a head 1 and a horizontal bar 2
And a locking piece t composed of a filament section 3 connecting the two with each other, a runner bar used as a resin injection path disposed adjacent to the horizontal rod section 2 and a collecting means of the locking piece t Is connected to the connecting rod 4 via a connecting body 5, and the adjacent heads 1 are connected to each other by a connecting body 6 to form an integral body.

The locking piece t according to the present invention is essentially different from the conventional locking piece in that the head, the filament part and the horizontal bar part are integrally formed of resin in the conventional one, and the filament part is However, the locking piece t of the present invention uses a thread made of a natural fiber or a synthetic fiber or a thread such as a gold thread or a silver thread as the filament portion 3. It is.

(Manufacturing Process) FIG. 3 shows a set of dies 10 and 11.
This shows a molding process for manufacturing the locking piece aggregate T using the head, a cavity for the head 1, a horizontal bar 2 and a connecting rod 4 (runner bar) on the mating surface of the two dies 10. And a yarn guideway for guiding the filament for the filament section 3 is formed. In addition, both dies 10, 1
Projecting pins 12 and 13 are arranged on both sides of the head 1 and the horizontal bar portion 2 of the molding 1.
The mold is extruded from the molds 10 and 11 by utilizing the molds 2 and 13.

The process for forming the locking piece assembly T will be described below with reference to this drawing. A) In the first stage, thread bodies F for forming a predetermined number of filament portions 3 in the thread guide path on the upper surface of the mold 10 (for example, the lower mold) are pulled out from a bobbin (not shown) at predetermined intervals. Deploy.

B) In the second stage, the molds 10 and 11 are closed. Then, the cavity of the connecting rod 4, that is, the molten resin of the runner bar is injected from the spool from the molding machine, and the head 1 and the horizontal bar 2 disposed on both sides of the runner bar are passed through the gates 5 and 5 whose cross sections are smaller than the runner bar. Fill both cavities with molten resin.

C) In the third stage, the head 1 and the horizontal bar 2 are
The upper mold 11 is opened with respect to the lower mold 10 while being supported by the protruding pins 12 and 13 which are in contact with these two edges.

D) In the fourth stage, as described above, the mold 1
The molded product released from 0, 11 is moved by a predetermined distance to a position on the right side from the left side in FIGS. This moving distance is equal to the length of the filament portion 3, and when this length changes, the moving distance also changes accordingly.

E) As described above, the assembly of the locking pieces t shown in FIGS. 3 and 4 is taken out from the mold while being formed one after another, and the positions deviated from the mold are indicated by arrows M and N. By cutting from the part, the locking piece aggregate T as shown in FIGS. 1 and 2 can be manufactured.

(Embodiment 2) FIGS. 5 to 8 show a method of manufacturing an assembly of locking pieces which can securely fix a filament constituting a filament portion to a horizontal bar portion.

FIG. 7 is a cross-sectional view of the mold in a state where the locking piece assembly is formed, and FIG. 8 is a plan view showing the lower side. In this embodiment, a pair of upper and lower molds 20 and 21 and another pair of upper and lower molds 22 and 23 are provided.
The molds 22 and 23 are disposed at a predetermined distance from the mold.

The dies 20 and 21 are composed of the head 1 and the connecting rod 4.
, The connecting portion 5, and the filament portion 3 in front of the connecting rod 5, and a ball-shaped root 3 </ b> A disposed immediately before the connecting rod 4 is formed. On the other hand, the other molds 22 and 23 are for forming the connecting rod 4A, the horizontal bar 2 and the connecting part 5A.

The ball-shaped root portion 3A has a filament portion 3
When the horizontal bar portion 2 having a small diameter is formed, the length of the filament portion 3 embedded in the horizontal bar portion 2 is extremely short,
In order to improve the adhesive strength, a root portion 3A is formed in advance in the filament portion 3 and the horizontal bar portion 2 is formed so as to integrally surround the root portion 3A.

A) The first step is a step of molding the ball-shaped root 3A. As shown in FIG. 5, the head 1, the connecting portion 5, and the connecting rod 4 are formed by using dies 20, 21 as shown in FIG. While molding, the ball-shaped root 3A is formed.

The ball-shaped root portion 3A has a function of securely bonding to the filament portion 3 and bonding between the resin to be filled later and the filament portion 3, and has a cylindrical shape. Various things such as an abacus ball shape and a square tube shape can be adopted.

B) In the second stage, the part excluding the root 3A, such as the head formed by the first molds 20, 21 as shown in FIG.

FIG. 6 shows a step of moving the filament 3 together with the root 3A. The left root 3A is moved to the position of the right root 3A, and the ball 3A is inserted into the cavity for the horizontal bar 2. Insert.

C) In the third stage, the first molds 20 and 21 and the second molds 22 and 23 are closed and the root 3A, the connecting rod 4,
Connection part 5, head 1, horizontal bar part 2, connection part 5A, connection rod 4A
Is molded.

Thereafter, the molding and the dies 20, 21
The interlocking piece aggregate T is continuously formed by intermittently moving the molded product from the openings 22 and 23 and the filament portion 3,
By cutting necessary portions in the state shown in FIGS. 1 and 2, the locking piece aggregate T can be efficiently manufactured.

In the locking piece t or the locking piece assembly T according to the present invention, since the filament is used for the filament portion 3, the solid shape is maintained as in the conventional locking piece assembly. Can not.

Therefore, the heads 1 are connected so as to be cuttable by a connecting body 6, and the horizontal bar 2 is connected by a connecting rod 4 (4A). With this structure, the connecting rod 4
(4A) Since it is sufficient to separate the horizontal bar portion 2, a conventional mounting device can be used.

Further, since the locking pieces according to the present invention are continuously manufactured as an aggregate, they are individually cut from the position shown by the arrow P in FIG.
Can be separated.

On the other hand, as shown in FIGS.
In the case where the connecting rods 4 and 4A are provided on both sides, it is necessary to separate the connecting rod 4 on the head 1 side, so that a new mounting device needs to be developed.

In FIGS. 7 and 8, the first mold 20,
The distance between the first mold 21 and the second molds 22 and 23 can be changed so that the length of the filament 3 between the head 1 and the horizontal bar 2 can be adjusted. Is constant, the first mold and the second mold can be integrally formed.

Since the embodiment of the present invention is configured as described above, the following effects can be obtained.

(A) Since the filament portion 3 is formed of a flexible yarn, damage to even a high-grade product using delicate fibers is reduced.

(B) Since the filament portion 3 is not molded, a small mold can be used, so that the equipment cost can be reduced and the molding cycle can be accelerated to improve the productivity. .

(C) A locking piece in which the length of the filament portion 3 is changed can be manufactured with one mold. D) Since the filament is used as the filament portion 3, it is not necessary to stretch the filament portion as in the related art, and the productivity can be improved.

(E) The material and shape of the thread can be changed according to the product. For example, a thread such as a gold thread or a silver thread, or an elastic rubber-like thread can be used.

[0058]

Since the present invention is configured as described above, the following effects can be obtained. A) A locking piece or a locking piece aggregate using a filament (yarn) made of a natural fiber or a synthetic fiber as a filament portion can be manufactured.

B) It is possible to provide a locking piece that does not damage a delicate fiber product. C) It is possible to provide a high-quality locking piece which is excellent in decorativeness and suitable for use in high-grade products. D) Further, it is possible to provide a production method which is excellent in productivity and can produce various kinds of locking pieces.

[Brief description of the drawings]

FIG. 1 is a perspective view of a locking piece assembly according to a first embodiment of the present invention.

FIG. 2 is a side view of the locking piece assembly shown in FIG.

FIG. 3 is a side view of a locking piece assembly that can be manufactured with one mold and the mold.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is an explanatory diagram of a locking piece assembly according to a second embodiment of the present invention, which can securely fix a horizontal bar portion to a filament portion.

FIG. 6 is an explanatory diagram of a ball section for fixing a horizontal bar section to a filament section.

FIG. 7 is a side sectional view of a mold of the molding machine of FIG. 5;

FIG. 8 is a plan view of the mold of FIG. 7;

[Explanation of symbols]

 T locking piece assembly t locking piece 1 head 2 horizontal bar part 3 filament part 4 connecting rod 5 connecting part 6 connecting body 10, 11, 20, 21 mold 12, 13 projecting pin

Claims (6)

[Claims] 1. A head and a horizontal bar disposed at a distance from the head are formed of synthetic resin, and a thread is disposed between the head and the horizontal bar. An engaging piece using a filament in a filament portion in which the head and the horizontal bar are integrally connected via a filament. 2. A head and a horizontal bar disposed at a distance from the head are formed of synthetic resin, and a thread is disposed between the head and the horizontal bar. A large number of locking pieces in which the head and the horizontal bar are integrally connected via a thread body are arranged in parallel, and the locking is connected by two runner bars parallel to the head and the horizontal bar. Piece aggregate. 3. The locking piece according to claim 1, wherein a thread having no twisting torque is used as the thread. 4. The locking piece according to claim 1, wherein an elastic yarn is used for the filament. 5. A cavity for a runner bar on a mating surface of a mold, a cavity for a horizontal bar portion on one side of the cavity, and a cavity from a head portion on the other side. Further, a yarn guide path is formed orthogonally to the runner bar cavity, and a yarn body is arranged in each of the yarn guide paths. A step of filling the rod portion and the cavity for the head with a resin, and after the resin is solidified, opening the mold to allow the molded article to escape from the cavity and moving the thread by a predetermined distance; And then filling each of the cavities with a resin. A method for producing a locking piece assembly using a filament in a filament portion. 6. The two runner bar cavities are arranged at an interval on a mating surface of a mold, a head cavity is provided near one of these runner bar cavities, and a cavity of the other runner bar is provided. And a gate for supplying a resin from a cavity of a runner bar which is located close to the head and the cavity of the horizontal bar portion, and further connected to the two runner bars. A thread guideway is formed at the center of the cavity between the head and the horizontal bar portion so as to intersect with the cavity of the head, and the thread material supplied into the guideway is formed together with the molding cycle of the head and the horizontal bar portion. A method of continuously manufacturing a group of locking pieces while transferring intermittently.