JPH0136631B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing device integrally molded of synthetic resin such that a socket portion having an insertion hole and an insertion head are provided at both ends of a filament portion.

The sealing device, which is integrally molded from synthetic resin with a long filament section in the middle and a socket section and an insertion head at both ends, is used for attaching price tags and labels to products, and for connecting assembled products such as slippers and sandals. It is used in many ways, such as sealing the openings of bags and sealing the lids of instruments. Figures 1 and 2 are
These are a plan view and a side view showing such a conventional sealing tool, and this sealing tool 1 is provided with a socket part 2 having an insertion hole at one end of a filament part 3, and an insertion head 4 at the other end. The entire filament part 3 is made of synthetic resin and is integrally molded in a straight line, and the filament part 3 is generally stretched and made delicate. This sealing tool 1 is made by passing a price tag or the like through the filament part 3, then pinching the socket part 2 and the insertion head 4 with the fingers of both hands, inserting the insertion head 4 into the insertion hole of the socket part 2, and removing the insertion head from the filament part 3. By connecting them inseparably through hooks No. 4, the whole becomes annular.

In this way, with conventional sealing tools, the insertion and connection between the socket part and the insertion head is done manually, which takes a lot of time when attaching price tags and labels to a large number of products. However, especially in the case of a sealing tool having a long filament portion 3, it is troublesome and inefficient to find the socket portion and the insertion head. Therefore, when attempting to connect the socket part and the insertion head using an insertion tool, the socket part and the insertion head must be spaced far apart from each other at both ends via a long filament part. In addition, even if the socket part and the insertion head are placed close to each other, the elasticity of the filament part causes them to easily move away from each other, making it difficult to develop a device for inserting such a sealing tool. was.

On the other hand, the filament part of this sealing device is not only used for attaching price tags, etc., but also for connecting two or more products, so it must not only have a certain length but also be flexible. It must have a thickness below a certain level in order to give this. However, the viscosity of the molten resin when molding the sealant with a mold is quite high, so it is difficult for the molten resin to flow into a long, thin mold.
Therefore, there are certain limits to the length and thickness. For this reason, conventionally, the filament part is formed using a mold with a diameter larger than a predetermined value and a short length less than a predetermined value, and after this molding, the filament part is stretched by being stretched in the length direction to create a thin and long flexible filament. I was trying to make it a filament part. However, since there is a limit to the stretching ratio, there is a natural limit to the length of the filament portion. Therefore, in the past, when trying to increase the length of the sealing device, not only did the length of the mold become longer, but the injection pressure of the molten resin also increased significantly, making the molding conditions harsher. It was hot.

SUMMARY OF THE INVENTION A first object of the present invention is to provide a sealing device that facilitates the insertion connection between the socket portion and the insertion head using an instrument. A second object of the present invention is to provide a sealing device that allows a sufficiently long filament portion to be obtained without stretching after molding. More specifically, it is an object of the present invention to provide a sealing device which can have a filament portion at least twice as large as that of conventional sealing devices even without stretching after molding. A third object of the present invention is to reduce the length of the mold by half when molding a sealing device that is approximately the same length as a conventional sealing device, and to reduce the molding pressure, thereby downsizing the molding device itself. The object of the present invention is to provide a sealing device that can be made to consume less energy.

A fourth object of the present invention is to provide a sealing device in which the movement of a stretching machine can be reduced to 1/2 of that of conventional devices when manufacturing a sealing device with a stretched filament portion.

Furthermore, a fifth object of the present invention is to provide a sealing device that is extremely easy to handle when a large number of sealing devices are packed in a box, transported, and used.

A sealing tool of the present invention that achieves the above object is a sealing tool that has a socket portion having an insertion hole and an insertion head provided at both ends of a filament portion, the outer end of the socket portion and the outer end of the insertion portion, Alternatively, the insertion head and the filament part near the socket part are connected in a separable manner, and the whole is endlessly integrally molded of synthetic resin.

Further, in the sealing device of the present invention, the filament portion extending from the socket portion and the filament portion extending from the insertion portion are arranged substantially parallel to each other, and are connected at their ends by the intermediate enlarged portion.

The present invention will be further described below with reference to embodiments shown in the accompanying drawings.

3 and 4 are a plan view and a partial sectional view, respectively, of a first embodiment of the sealing device according to the present invention, in which the sealing device 1 includes a socket portion 2 and a filament extending from one side of the socket portion 2. 3 and an insertion head 4 provided on the distal end side of the filament portion 3, and the outer end of the insertion head 4 is cutably connected to the outer end of the socket portion 2. It is integrally molded into an endless piece of thermoplastic synthetic resin such as nylon, polypropylene, polyethylene, or polyester.

The socket part 2 has a substantially cylindrical shape, and the inside of this cylindrical body 5 has an insertion hole 7 surrounded by an annular wall 6.
is provided, and the insertion head 4 is inserted into the insertion hole 7 and locked therein. Therefore, as shown in FIG.
A ring-shaped fixed tooth 8 is provided in a protruding manner at a location corresponding to the center of the ring. The fixed teeth 8 are provided all around the inner wall surface of the annular wall 6, as shown in FIG.
Depending on the case, it may not necessarily be the entire circumference. To explain the fixed tooth 8 in more detail, the fixed tooth 8 includes an annular protrusion 9 arranged concentrically with the socket part 2 and a connecting part 10 connecting the annular protrusion 9 and the annular wall 6. Both sides of the connecting portion 10 in the insertion direction are locking surfaces 11a and 11b, respectively, so that the insertion head 4 can be inserted and locked from either insertion direction of the insertion hole 7.
is molded. Here, 12 is an annular protrusion 9
13 indicates a guide surface, and 13 indicates an engagement surface. This engaging surface 13 forms an angle of approximately 10° or more with respect to the axis of the socket portion 2, but of course may form an angle of less than 10°, or may be parallel to the axis in some cases. It's okay.

The filament part 3 is connected to the socket part 2 and the insertion head 4.
When the insertion head 4 is inserted into the insertion hole 7 of the socket part 2, it forms a loop, and is a part for winding the desired object to be connected or passing it through the hole of the object. The filament part 14 extending from the socket part 2 and the filament part 15 extending from the insertion head 4 are arranged substantially parallel to each other, and their ends are connected by an intermediate enlarged part 16. In the first embodiment, the insertion head 4 and the filament part 15 are located in a straight line on a straight line A passing through the axis O of the socket part 2, and the filament part 14 is formed into a substantially J-shape. Note that the filament parts 14 and 15 may be stretched after being molded using a mold to increase their strength and flexibility. Such stretching operation may be performed in a mold immediately after molding, or may be performed using a dedicated stretching device.

The insertion head 4 is inserted into the insertion hole 7 and locked, and a head 17 whose diameter is slightly smaller than the diameter of the annular protrusion 9 of the socket part 2 is formed at its tip. The portion is formed in a warhead shape to facilitate insertion into the insertion hole 7. Further, the tip of the head 17 is connected to the side surface of the socket portion 2 via a first connecting piece 24 that can be cut.

The first connecting piece 24 connects the insertion head 4 to the socket part 2 until just before the insertion head 4 is inserted into the insertion hole 7 of the socket part 2 so that the sealing tool 1 remains in an endless state. This is a member for keeping the insertion head 4 in place, and just before inserting the insertion head 4 into the insertion hole 7 of the socket part 2, for example, if the insertion head 4 is twisted while the socket part 2 is fixed, it can be easily cut. It's summery.

As can be easily understood from FIGS. 3 and 4, the first connecting piece 24 has a substantially conical shape, and the connecting portion 24a with the socket portion 2 is connected to the sealing tool 1.
It is made thinner than the thickness of each part.

As described above, since the sealing tool 1 is kept in an endless state by the first connection piece 24 until just before the insertion head 4 is inserted, the packing work and the insertion and connection work using tools or hands are significantly facilitated.

As described above, the first connecting piece 24 is connected to the insertion head 4.
There is no particular restriction on its shape as long as it has a function of connecting the insertion head 4 to the socket part 2 until just before it is inserted into the insertion hole 7 of the socket part 2. For example, the shape shown in FIGS. As shown in the figure, it may be columnar and only the joint portion 24b with the socket portion 2 may be made thin.

Note that a second connecting piece 26, a third connecting piece 27, and a third connecting piece 28, which will be described later, have the same function as the first connecting piece 24 described above.

By the way, two locking pieces 18 are provided radially projecting from the rear end surface of the head 17. Locking piece 18
As will be described later, when the insertion head 4 is locked in the socket portion 2, it is supported by colliding with the locking surface 11a or 11b of the fixed teeth 8, thereby locking the insertion head 4 into the socket portion 2. As shown in FIG. 3, the shape is thin at the connection part with the rear end surface of the head 17 when viewed from the side;
It has a so-called wedge-shaped shape that gradually becomes thicker toward the rear end (free end), and when it is not locked (Fig. 3), it becomes thicker toward the rear end of the insertion head 4. They extend at an angle of inclination so that they diverge from each other, and they themselves have a certain degree of elasticity. Locking piece 18
Although the number of pieces is not necessarily limited to two, in the case of two pieces, it is easy to remove the mold after molding. Further, the location where the locking piece 18 is provided does not necessarily have to be at the rear end of the head 17.

A substantially spherical stopper 21 is formed on the rear end side of the head 17 via the first connecting rod 19 and the body 20. Since the first connecting rod 19 is located between the two locking pieces 18, it has a flat shape. On the other hand, the body portion 20 has a columnar shape, and its diameter is smaller than the diameter of the annular projection portion 9. The stopper 21 is inserted into the insertion hole 7.
In addition to limiting the amount of insertion of the insertion head 4 into the insertion hole 7, the stopper 21 also has the function of minimizing the shaking of the insertion head 4 within the insertion hole 7 when locked. It is preferable to make it somewhat larger than that of . However, Stoppa 21
It is not necessary to provide the stopper 21, and if there is no particular restriction on the amount of insertion of the insertion head 4 into the insertion hole 7, the stopper 21 can be omitted, and the shape can be made arbitrary.

On the filament part 15 side of the stopper 21, a second
A connecting rod 22 is formed, and an approximately spherical grasping portion 23 is formed on the filament portion 15 side of the connecting rod 22 at the border with the filament portion 15. When inserting the insertion head 4, holding the grip portion 23 by hand will make the operation much easier. However, it is not necessary to provide this gripping portion, and its size may be smaller than the stopper 21,
The shape is also arbitrary.

FIG. 5 shows a second embodiment of the present invention, in which a substantially spherical protrusion 25 is provided on the filament portion 14 in correspondence with the gripping portion 23 in order to make the stretching after molding uniform. . Therefore, during stretching, the intermediate enlarged portion 16 is clamped by one of the gripping tools of the stretching device, and the gripping portion 23 and the protrusion 2
Since the filament parts 14 and 15 are stretched by holding the filament part 1 with the other gripper of the stretching device, the filament part 1 can be stretched without cutting the first connecting piece 24.
4 and 15 are uniformly stretched.

FIG. 6 shows a third embodiment of the present invention, in which the connecting piece 24 connecting the insertion head 4 and the socket part 2 is not provided, but the grip part 23 is not provided.
and the protrusion 25 are disconnectably connected by a second connecting piece 26. In the sealing tool 1 having such a shape, the gripping part 23 and the protrusion 25 are connected through the second connecting piece 26, and the filament part 1 can be easily gripped by the stretching device.
The stretching of 4 and 15 is the second example (see Figure 5).
becomes easier compared to In this embodiment, the filament part 14a interposed between the socket part 2 and the protrusion 25 is the filament part 14a after being stretched.
It is formed in advance to have a thickness that is approximately equal to that of . Further, although the gripping portion 23 and the protrusion 25 are held by the stretching machine at the same time, since the connecting piece 26 is provided between them, it is almost impossible for this to be cut during stretching.

FIG. 19 is an enlarged view of the second connecting piece 26, and the central portion 26a of the connecting piece 26 is thinner than each part of the sealing device 1.

FIG. 7 shows a fourth embodiment of the present invention, in which the filament part 14 is positioned on a straight line A passing through the axis O of the socket part 2, and
The insertion head 4 is bent into a substantially J-shape so that the head 17 is connected to the circumferential surface of the socket portion 2 via the first connection piece 24.

FIG. 8 shows a fifth embodiment of the present invention, in which the insertion head 4 is projected to the right in the figure from the socket part 2 so that the stopper 21 of the insertion head 4 faces the socket part 2. together with socket part 2
A third connecting piece 27 connects the circumferential surface of the stopper 21 to the stopper 21 so that it can be cut.

The third connecting piece 27 has a conical shape like the first connecting piece 24, and the joint part 27a with the stopper 21 is made thinner than each part of the sealing device 1 so that no cut pieces remain on the stopper 21. . This means that the insertion head 4 can be smoothly inserted into the insertion hole 7 of the socket portion 2 even during insertion and connection.

FIG. 9 shows a sixth embodiment of the present invention, in which a substantially spherical projection 25a is provided on the filament portion 14 in correspondence with the gripping portion 23 on the insertion head 4, and the gripping portion 23 and the projection 25a are A fourth connecting piece 28 connects them so that they can be cut. This fourth connecting piece 28 is formed in the same manner as the second connecting piece 26.

FIG. 10 shows a seventh embodiment of the present invention, in which the head 17 of the insertion head is removably connected to the end of the socket portion 2 via a first connecting piece 24. By molding in this manner, it is possible to narrow the distance between the filament parts 14 and 15, so that more sealants can be molded at the same time even with the same molding mold.

FIG. 11 shows an eighth embodiment of the present invention, in which the head 17 of the insertion head is cutably connected to the end surface of the socket portion 2 via a first connecting piece 24. By forming the filament in this way, when the insertion head 4 is inserted into the insertion hole 7 of the socket part 2, the filament parts 14 and 15 do not spread out and become almost parallel to each other, which makes it easier to see when a price tag is attached. This will improve product quality.

FIG. 12 shows a ninth embodiment of the present invention, in which the second connecting rod 22 of the insertion head 4 is bent and the head 17 is inserted into the socket portion 2 through the first connecting piece 24. It is connected so that it can be cut to the end face of. This example provides the same effects as the eighth example.

Figure 13 shows a case in which multiple sealers 1 are molded at the same time.
This shows a tenth embodiment in which the socket parts 2 are connected in a separable manner by a first sub-connecting part 29, and a first main connecting part 36 (which serves as a runner during molding) The intermediate enlarged portion 16 of the filament portion 3 is disconnectably connected to the intermediate enlarged portion 16 by a second sub-connecting portion 30. Also, Figure 14 shows the first
This is a modification (eleventh embodiment) of the embodiment shown in FIG. 3, in which the socket part 2 is disconnectably connected to a second main connection part 37 via a third sub-connection part 31.

FIG. 15 shows a twelfth embodiment, in which the socket parts 2 are separably connected to each other through a minute connecting piece, and the second main connection is connected through a third sub-connection part 31. It is connected to section 37.

FIG. 16 shows a thirteenth embodiment, in which the sealing device 1 shown in FIG. 9 is molded in a staggered arrangement. By arranging the sealers 1 in a staggered manner, the distance between the sealers 1 can be narrowed, making it possible to mold a large number of sealers 1 at the same time, and making mold processing extremely easy.

Here, 38 is a third main connection part, and this third main connection part 38 and the insertion head 4 are disconnectably connected by the fourth sub-connection part 32 or the fifth sub-connection part 33. Further, the socket portion 2 and the third main connecting portion 38 are disconnectably connected to the sixth sub-connecting portion 34 or the seventh sub-connecting portion 35.

The above sub-connection parts 29, 30, 31, 32, 33,
The portions 34 and 35 that are joined to the sealing tool 1 are tapered so as not to leave any residue on the sealing tool 1.

Next, the case where the sealing tool 1 shown in FIGS. 3 and 4 is used to insert the insertion head 4 into the insertion hole 7 of the socket part 2 and lock it to the socket part 2 is shown in FIGS. 20 to 21. This will be explained with reference to the diagram.

When inserting the insertion head 4 into the insertion hole 7 of the socket part 2, first cut the first connecting piece 24 to separate the insertion head 4 from the socket part 2, and then insert, for example, a price tag T into the insertion head 4. The insertion head 4 is passed through a hole (not shown) in the object to be attached, such as clothing, before and after that, and then the insertion head 4 is inserted into the insertion hole 7. It is guided through the insertion hole 7. As the head 17 of the insertion head is further inserted through the guide surface 12 of the fixed tooth 8, the locking piece 18 is connected to the first connecting rod 19 of the insertion head, as shown in FIG. Fall down in the direction of contact,
Its outer surface is substantially flush with the outer peripheral surface of the head 17, and in this state it is smoothly guided along the guide surface 12.

In this way, the insertion head 4 is further inserted into the insertion hole 7.
When the locking piece 18 is inserted inside, the rear end (free end) of the locking piece 18 passes through the annular protrusion 9, and at the same time, the locking piece 18 expands due to its elastic expansion force, and the rear end (free end)
As shown in FIG. 21, the annular wall 6 and the locking surface 11a
and the engaging surface 13, and is securely supported. On the other hand, the stopper 21 hits the other end of the annular protrusion 9, making it impossible to insert the insertion head 4 any further.

That is, in this state, the insertion head 4 is inserted into the insertion hole 7.
It is securely locked so that it does not come out in either direction of insertion.

As described above, the present invention provides a structure in which the outer end of the socket portion having the insertion hole and the outer end of the insertion head, or the insertion head and the filament portion near the socket portion, are connected in a cuttable manner, and the entire body is integrated into an endless piece. Since the socket part and the insertion head part are formed in a similar shape, the behavior of separating the socket part and the insertion head part is suppressed, and the insertion connection by an insertion tool or by hand becomes extremely easy.

Therefore, the efficiency of attaching price tags using this type of sealing tool will be dramatically improved.

In addition, as mentioned above, since the sealing device of the present invention has an endless shape, even if a mold of approximately the same length as the conventional one is used, the sealing device of the present invention can be stretched at least 2 times longer than the conventional sealing device in an unstretched state. It becomes a long sealing tool with a filament part that is more than twice as large.

Therefore, if it is desired to obtain a sealing device of the same length as a conventional sealing device, the length of the mold can be approximately half that of the conventional one, and the molding device itself can also be made very compact. Furthermore, since the molding pressure can be lowered compared to the conventional molding pressure, not only does power consumption become less, but also so-called burrs do not occur due to high molding pressure, so the quality of the product is improved.

Furthermore, when drawing the filament portion of the raw material of the sealing device obtained by the present invention, the stroke of the drawing machine is halved compared to the conventional one, which not only simplifies the drawing machine but also significantly improves productivity.

Further, as described above, the sealing device of the present invention is endless, so it is very easy to handle when packaged and transported or used.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional sealing device, FIG. 2 is a side view thereof, and FIG. 3 is a plan view of a sealing device according to the present invention.
FIG. 4 is a side view thereof, FIGS. 5 to 12 are plan views showing other embodiments of the present invention, and FIGS. 13 to 1
FIG. 6 is a plan view showing a case in which a large number of sealing devices are molded simultaneously, FIG. 17 is a plan view showing another example of the first connecting piece, FIG. 18 is a side view thereof, and FIG.
Fig. 20 is an explanatory view showing the state in which the insertion head is inserted into the insertion hole of the socket part when using the sealing tool, and Fig. 21 is an explanatory view showing the state in which the insertion head is inserted into the socket part. FIG. 2...Socket part, 3...Filament part, 4
... Insertion head, 7 ... Insertion hole, 16 ... Middle enlarged part, 24, 26, 27 and 28 ... Connection piece.

Claims (1)

[Scope of Claims] 1. A sealing tool having a socket portion having an insertion hole and an insertion head provided at both ends of a filament portion, wherein the outer end of the socket portion and the outer end of the insertion head, or the insertion head A sealing device characterized in that the filament portion in the vicinity of the socket portion is cutably connected to the filament portion, and the entirety is integrally molded endlessly from synthetic resin. 2. The sealing device according to claim 1, wherein the filament portion extending from the socket portion and the filament portion extending from the insertion portion are arranged substantially parallel to each other and are connected at their ends by an intermediate enlarged portion.