JPS6356045B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is useful when attaching tags displaying information about products such as price tags and labels to products, or when attaching tags that display information about products such as price tags and labels, or when attaching tags to products such as shoes, slippers, socks, etc. The present invention relates to a method for efficiently manufacturing an assembly of locking pieces that is mainly used when connecting to a locking piece.

[Prior art]

For example, using synthetic resin such as nylon to
As shown in the figure, a locking piece T in which a head 1 and a horizontal bar 2 are connected by a filament portion 3 to form a substantially H-shape as a whole is already known.

This locking piece T is mainly used as a connecting member when attaching a price tag to a product. This locking piece T
To attach it to a product, place the head 1 and horizontal bar 2 of the locking piece T on a connecting rod with the head 1 and horizontal bar 2 arranged parallel to each other using a mounting machine equipped with a hollow needle with a crack in the side at the tip. After inserting the group of locking pieces, a price tag is passed through the hollow needle, and the product is penetrated through the hollow needle. Then, by operating the lever of the attachment machine, the piston pushes the rear end of the horizontal bar into the hollow needle, and at the same time, one locking piece is separated from the group of locking pieces. Then, with the filament portion 3 bent parallel to the horizontal bar 2, the horizontal bar 2 is guided to the back side of the product, and when the horizontal bar 2 comes out of the hollow needle, the hollow needle is removed from the product, price tag, etc. As a result, the horizontal bar 2 and the filament portion 3, which have become parallel, return to the T-shape, allowing the product to be connected to the price tag, etc.

The locking piece T attached in this way is attracting attention because it simplifies the work of connecting products and price tags, etc. using thread, which has been done for a long time. used in

Therefore, this locking piece is extremely required to have good workability and a low unit price, so it is necessary to lock a large number of locking pieces in a state where they are planted on one connecting member. By molding the group of pieces, the number of molded shots can be reduced and the locking pieces can be handled conveniently.

However, when forming a group of locking pieces on a connecting rod with a large number of them standing in the direction of the thickness of the head, the pitch between each locking piece must be widened due to mold manufacturing problems. The need arose.

That is, a mold is naturally used to mold the group of locking pieces, but a large number of cavities for each locking piece must be arranged in this mold. The narrower the gap between the cavities, the more the locking pieces can be gathered together. However, thin partition walls are formed between the cavities, and if the partition walls become thin, they may be deformed by the pressure of the molten resin, or even be damaged.

Another problem is that the cavity of the mold is formed by electrical discharge machining, but the depth is quite deep compared to the width of the cavity, so the thickness of the partition wall must be kept extremely thin and constant. It is difficult to achieve a thickness of 100 mm, and this also unnecessarily increases the manufacturing cost of the mold. For this reason, from the viewpoint of mold manufacturing, the thicker the partition wall of the cavity, the more advantageous it is.

Due to the above-mentioned circumstances, there is a limit to how thin the partition wall between the cavities can be made, and for this reason, the thickness of the partition wall is usually made equal to the thickness of the head or the diameter of the horizontal bar. . Therefore, the pitch at which the locking pieces in the locking piece group are arranged is twice the thickness of the head.

However, when the pitch between each locking piece is determined in this way, the following problems arise.

(1) If the length of one connecting rod becomes long, there will be problems in handling and the distance over which the resin will flow during the molding process. Only about 60 locking pieces can be obtained. This means that the number of times the locking piece group is inserted into the attaching machine increases, which worsens the workability of the label attaching operation.

(2) A large number of locking strips are packed in boxes and transported and stored. When in use, a large number of locking strips are placed on the work desk, and when the label attachment work is completed, they are returned to the original box. It is stored in.

Therefore, if the pitch between each locking piece is wide, the locking pieces will become entangled with each other, and this will have to be unraveled, which will take a lot of time.

(3) If the number of locking pieces included in one locking piece group is small, the number of molding shots increases, so the number of locking pieces 1
The true unit price will inevitably rise. Considering that the unit price of the locking piece is in units of 1,000 yen, an increase in the number of shots will have an immeasurable effect on the unit price.

[Purpose of the invention]

The present invention was obtained as a result of research mainly aimed at solving the problem of molding in order to solve the above-mentioned problems. It is an object of the present invention to provide a method capable of forming a group of locking pieces even at pitches so narrow that they substantially contact each other or have almost no gaps.

By reducing the number of times the locking piece group is inserted into the attachment machine in this way, the work efficiency of locking piece attachment can be improved, and a large number of locking pieces can be manufactured in one shot, thereby reducing the unit cost. Another object of the present invention is to provide a method for manufacturing a group of locking pieces that can be used.

[Summary of the invention]

To achieve the above object, the present invention provides a head 1
, and horizontal bar 2 placed at a distant position corresponding to this.
and the locking piece T connected by the filament part 3,
A synthetic resin locking piece group A in which a large number of locking pieces A are arranged in the thickness direction of the head 1 and each of the horizontal bars 2 of these locking pieces T is connected to one connecting rod 4 by a connecting piece 5. (1) Different lengths are formed between the horizontal bar 2 and the connecting rod 4 so that every other locking piece T is arranged in a staggered manner with a different height. (2) a second step of stretching the connecting pieces so that the horizontal bar and the head are in a line; (3) the horizontal bar. This method of manufacturing a group of locking pieces includes a third step of stretching the filament portion 3 connecting between the filament portion 2 and the head portion 1 to a predetermined magnification.

In the present invention, when manufacturing a group of locking pieces that are arranged in close contact or close contact, the original shape is molded in the molding process using a mold that forms partition walls of sufficient thickness between the cavities. This is a method in which the connecting piece is stretched so that the original shape is brought into close contact or in a close contact state, and then the usual filament portion is stretched.

Molding a group of locking pieces arranged in close contact means that there is no partition wall of the cavity for molding the head and horizontal bar, but the present invention has a special arrangement of locking pieces. A sufficient partition wall is ensured between the cavities. In the locking piece group obtained by the present invention, the locking pieces come and go or are arranged in close contact, and one locking piece group has about twice as many locking pieces as a normal locking piece group. It will be included in.

In other words, if the locking piece group includes the same number of locking pieces, the locking piece group can be provided with a length that is half the length of the conventional locking piece group.

Further, since the locking pieces are arranged in close contact with each other, there is no room for the heads of another group of locking pieces to fit between the heads.

Furthermore, since the heads and the horizontal bars are not in contact with each other or are close to each other, they reinforce each other, and even if the heads are not connected, they are substantially connected. It will have the same functionality.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 5, the locking piece T made of synthetic resin, for example, nylon, is formed by integrally molding the head 1, the horizontal bar 2, and the filament portion 3, and finally the locking piece group A shown in FIG. It will be manufactured as.

FIG. 1 shows the original form of the locking piece group formed by the molding process, in which a large number of horizontal bars 2 of locking pieces T are arranged on one connecting rod 4 via connecting pieces 5a and 5b. are integrally connected. At this time, each locking piece T
In this case, the length l of the filament portion 3 is all the same, and the dimensions of the head 1 and the horizontal bar 2 are also the same. However, the lengths of the connecting pieces 5a and 5b are alternately long and short, and the heights of the head 1 and horizontal bar 2 of each locking piece T are alternately set high and short. They are arranged in a staggered pattern on the sides.

That is, the filament portion 3 of the tall locking piece T
The head 1 of the short locking piece T is positioned between the top 1a of the head 1 of the short locking piece T and the bottom 1b of the head 1 of the tall locking piece T. The heads 1 are arranged so as not to face each other so as to be lower than the above.

By arranging the locking pieces T in their original shape as described above, gaps S are formed between the plurality of locking pieces T.

By shifting the positions of adjacent horizontal bars 2 in a staggered manner in the vertical direction in FIG. 1, gaps S are similarly formed between the horizontal bars 2.

By arranging each locking piece T in this way, even if the pitch P between each locking piece T is the same as the thickness t of the head 1, the state shown in FIG. 1 can be maintained, that is, after molding. In its original state, each locking piece T
This allows a gap S to be formed between the heads 1 and the horizontal bars 2, particularly between the heads 1 and the horizontal bars 2.

This gap S is extremely important, and can be used to adjust the thickness of the partition walls between the cavities of the mold.

As described above, first, in the first step, the original shape of the locking piece group A is molded using a mold having partition walls of sufficient thickness between each cavity, and then the filament portion 3 of this locking piece group A is stretched. The connecting piece 5a is stretched by the machine 6, but before that, in a second step, the short connecting piece 5a is stretched to match the long connecting piece 5b.

As shown in FIG.
Further, the first movable bar 6a is arranged between the horizontal bar 2 at a lower position and the connecting member 4, and the connecting rod 4 is fixed by a fixing device (not shown).

Next, when the first moving bar 6a is moved in the direction of the arrow in FIG. 1, the horizontal bar 2 at a low position moves upward in FIG. 1, so the short connecting piece 5a
is stretched. As a result of this stretching operation, the horizontal bar 2 located at a low position is moved to a position where it is aligned with the horizontal bar 2 located at a high position, that is, to a position where it contacts the fixed bar 6c.

Therefore, as shown in FIG. 2, the heights of the heads 1 of each locking piece T are aligned, and the heads 1 and the horizontal bars 2 are aligned so that they are almost in contact with each other.

From the above state, the filament portion 3 is then stretched in a third step.

Therefore, as shown in FIG.
b is moved in the direction of the arrow, thereby hooking the lower surface of the head 1 and moving it further in the direction of the arrow. With the horizontal bar 2 fixed, the filament portion 3 is moved to a predetermined position by the moving bar 6c. It will be stretched to a length of .

By this stretching of the filament portion 3, the molecules constituting the filament portion 3 are oriented and the strength of the filament portion 3 is increased, and as shown in FIG. The locking piece group A has such a narrow pitch P between the locking pieces T that each head 1 and horizontal bar 2 almost touch each other when connected to the locking piece group A.
is manufactured.

In addition, as shown in FIG. 3, the locking pieces T can be used by separating the locking pieces T one by one using an attaching machine while the locking piece group A is stretched.

In the state shown in Fig. 3, after the contact portions of the head 1 of each locking piece T and the end surface of the horizontal bar 2 are releasably adhered by adhesive, beam solution, or heat seal welding, from each horizontal bar 2. Connecting piece 5
A and 5b may be cut off to use each locking piece group A in the state shown in FIG. 4.

In this way, the connecting rod 4 and the connecting pieces 5a, 5
b can be removed when attaching the label, so the connecting rod 4 from which the connecting pieces 5a and 5b protrude in a comb shape does not protrude from the lower end of the attaching machine, so this connecting rod 4, etc. can be used to attach clothes, etc. It is possible to prevent damage caused by getting caught on the product.

Further, since the materials of the removed connecting rods 4 and the like can be reused, waste of materials can be avoided.

〔Effect of the invention〕

The present invention arranges a large number of locking pieces T in the thickness direction of the head 1, each of which connects a head 1 and a horizontal bar 2 arranged at a correspondingly distant position with a filament portion 3. In a method for manufacturing a synthetic resin locking piece group A in which each horizontal bar 2 of the locking piece T is connected to one connecting rod 4 by a connecting piece 5, (1) the locking piece T The original shape is such that every other horizontal bar 2 and connecting rod 4 are connected by connecting pieces 5 of different lengths so that every other horizontal bar 2 and connecting rod 4 are arranged in a dried bird shape with different heights. (2) a second step of stretching the connecting piece so that the horizontal bar and the head are aligned in a row; (3) a filament portion to connect between the horizontal bar 2 and the head 1; This is a method for manufacturing a group of locking pieces, which includes a third step of stretching 3 to a predetermined magnification.

Therefore, the present invention can achieve the following effects.

(a) Since the head 1 and the horizontal bar 2 are substantially in contact or close to each other, the number of locking pieces T per connecting rod 41 is larger than that of the conventional type. can be manufactured.

In other words, it is possible to provide a compact locking piece group A.

(b) Since the head 1 and the horizontal bar 2 are substantially in contact or close to each other, the locking piece group A
Since there is no entanglement between the products, it is possible to prevent a decrease in product value and complication of handling during packaging, transportation, or use.

In other words, since the locking piece group A is extremely compact, it is possible to provide the locking piece group A that can prevent troubles such as entanglement from occurring.

(c) When using the connecting rod 4 of the same length as the conventional locking piece group, approximately twice as many locking pieces T are included, so it is difficult to load the locking piece group A into the mounting machine. The frequency of doing so will be halved.

(d) With the conventional arrangement of locking pieces, there is a limit to the thickness of the partition wall of the cavity dug into the mold, making it substantially difficult to arrange them densely. For example, a group of tightly packed locking pieces can be manufactured using normal mold manufacturing technology.

(e) Since a large number of locking pieces are arranged on one connecting rod on the mold,
The flow of the molten resin is good, making it possible to shorten the molding cycle, and since a large amount of locking pieces are manufactured at once, it is also possible to reduce the number of molding shots.

From this, the productivity of the locking piece group can be significantly improved and costs can be reduced.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention, in which FIG. 1 is a side view of the original form of the locking piece group;
FIG. 2 is a side view of a locking piece group showing a state in which the connecting pieces are stretched, FIG. 3 is a side view showing a state in which the filament portion has finished being stretched, and FIG. 4 is a locking piece group according to another embodiment. FIG. FIG. 5 is a front view showing one locking piece. 1... Head, 2... Horizontal bar, 3... Filament part, 4... Connecting rod, 5a, 5b... Connecting piece, T
... Locking piece, A... Locking piece group, P... Pitch between locking pieces, t... Thickness of head.

Claims (1)

[Scope of Claims] 1. A large number of locking pieces T are arranged in the thickness direction of the head 1, each of which connects the head 1 and a horizontal bar 2 arranged at a correspondingly distant position with a filament portion 3. death,
In a method for manufacturing a synthetic resin locking piece group A in which each of the horizontal bars 2 of these locking pieces T are connected to one connecting rod 4 by a connecting piece 5, The first step is to form an original shape in which the horizontal bars 2 and the connecting rods 4 are connected every other time by connecting pieces 5 of different lengths so that the heights are different for every other book and arranged in a staggered manner. a second step of stretching the connecting piece so that the horizontal bar and the head are aligned in a row; and a second step of stretching the connecting filament portion 3 between the horizontal bar 2 and the head 1 to a predetermined magnification. A method for manufacturing a group of locking pieces, characterized by comprising three steps.