JPS6317710B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an inlet/outlet in a flexible container for storing granular materials such as grains and chemical raw materials. Here, the input/output port refers to an opening through which powder or granular material is introduced into the flexible container or discharged from the flexible container.

(Prior Art) Flexible containers are currently being widely used in various industries because they have advantages such as being able to be folded when not in use, taking up little storage space, and being easy to maintain as they do not rust. ing.

By the way, in a conventional flexible container, its discharge port is formed from a flexible material that is the same as or similar to the flexible material that constitutes the container body. When storing or discharging powder or granular materials into a flexible container, a person ties up the dumping port with a rope, etc., or unties the tied rope. ing. This work is extremely troublesome and must be carried out in an atmosphere filled with dust generated from the powder, which is not good for the health of the workers.

On the other hand, in a flexible container that stores powder and granular materials, a discharge port tied with a rope or the like protrudes from the flexible container, and this protrusion becomes an obstacle when stacking a large number of flexible containers. The reality is that there are. That is, due to the protrusion of the dumping and discharging ports tied with ropes or the like, the stacked flexible containers are tilted, making it difficult to stack the flexible containers in multiple tiers.

Additionally, as mentioned above, conventional flexible container dumping ports must be opened and closed by workers using ropes, etc., but this work can now be done automatically using machines, etc. It is very difficult to do so. This is because the main body and discharge port of the flexible container are made of flexible material.

(Purpose) The present invention was made in view of the above-mentioned circumstances, and its purpose is to maintain the advantages of conventional flexible containers of this type and to perform opening/closing operations easily and in a short time. The purpose of the present invention is to extremely reduce the protruding portion when closed.It is an object of the present invention to provide a dumping and discharging port which has a simple and lightweight structure and can reduce manufacturing costs.

(Structure) That is, the gist of the present invention is as follows.
In a dumping port attached to the opening of a flexible container 10 for storing powdered materials such as chemical raw materials, the dumping port is formed into a cylindrical shape from a flexible material such as rubber or synthetic resin. A base material 21 is attached to the opening of the flexible container 10 at its opening edge, and a rope 12 is attached to the vicinity of the opening of the flexible container 10 to cover the entire base material 21 when folded. a plurality of vertical folds 23 attached to the base material 21 and folded to a certain side;
A plurality of diagonal folds 24 extending from one end of each longitudinal fold 23 for bending the base material 21 to the opposite side of the fixed side are formed, and the longitudinal folds of the base material 21 are A reinforcing cloth 25 is fixed to each of the portions located between the vertical fold 23 and the diagonal fold 24, and the base material 21 is folded in a certain direction by the vertical fold 23, the diagonal fold 24, and the reinforcing cloth 25. 20, which is characterized by being able to perform the following operations at all times.

In other words, the present invention makes it possible to easily open and close the dumping/discharging port 20 by providing the folding lines 23 and 24 in advance on the dumping/discharging port 20 for always folding it into a fixed shape. Moreover, the projecting part when closed was made to be extremely small.

(Example) Below, an example of the present invention will be described with reference to the drawings. Fig. 1 shows a perspective view of a flexible container 10 equipped with a dumping port 20 according to the present invention. This flexible container 10 has a main body 11 formed in a bag shape from a flexible material such as synthetic resin, and a rope 1 used for hanging the container 10 is attached to the outer periphery of the main body 11.
2 is installed. Further, upper and lower discharge ports 20, 20 are respectively fixed to openings (not shown) provided on the upper and lower surfaces of the main body 11, and a plurality of lid bodies 1 are arranged around each of these discharge ports 20.
3 to 13 are fixed so as to surround each discharge port 20. A rope 14 is inserted through the tip of each lid 13, and each lid 13 is closed by squeezing the rope 14.

That is, each dumping/discharging port 20 according to the present invention is made of a base material 21 that is formed into a cylindrical shape from a flexible material such as rubber or synthetic resin, and is attached to the opening of the flexible container 10 at its opening edge. and a lid 13 that is attached near the opening of the flexible container 10 and closed by a rope 12 so as to cover the entire base material 21 when it is folded.

As shown in FIGS. 3 to 6, each discharge port 20 includes a cylindrical base material 21 made of a flexible material such as rubber or synthetic resin, and an opening edge of one end of this base material 21. It has rigid wire rods 22, 22 attached to the other end edge. In this example, the material of the base material 21 is the same as that of the main body 11 of the container 10. Note that each rigid wire 22 is connected to the base material 21
Although the purpose is to maintain the shape so that the opening edge of the opening is always open, each rigid wire 22 is not necessarily necessary.

Further, the base material 21 is formed with the same number of vertical folds 23 and diagonal folds 24 (six in this embodiment). The longitudinal folds 23 are for folding the base material 21 inward, and are provided at equal intervals. Further, each diagonal fold line 24 is for folding the base material 21 outward, and the vertical fold line 23 is for folding the base material 21 outward.
It extends obliquely from the end on the container 10 side toward the opening edge of the dumping/discharging port 20 . Further, a reinforcing cloth 25 is attached to the base material 21 located between the vertical fold line 23 and the diagonal fold line 24. Each of these reinforcing cloths 25 is made of the same material as the base material 21 and formed in a triangular shape, and the reinforcing cloths 25 increase the rigidity of the base material 21 to which they are attached. Moreover, each rigid wire 22 is specifically formed of piano wire, and as shown in FIG.
It is housed in a portion 21a formed by folding both edges of 1. Each of the dumping and discharging ports 20 configured as described above has one opening edge that connects the container 1.
It is sewn or welded to the opening of the main body 11 of 0. Next, a method of manufacturing each input/outlet port 20 will be explained with reference to FIGS. 5 and 6. The base material 21 is formed by cutting a flexible material such as rubber or synthetic resin into a rectangular shape, and has a lower edge shown in FIG. 5 that is fixed to the container 10 side. Note that mounting allowances 21a, 21a are provided on both upper and lower edges of the base material 21.
are integrally formed, and a fixing margin 21b is integrally formed at one end of the base material 21.

Then, creases 23 are formed at equal intervals in the longitudinal direction of this base material 21 by applying heat, and each crease 23 in the longitudinal direction is
A diagonal diagonal crease 24 is formed in between by applying heat. Each longitudinal fold 23 and diagonal fold 24
are for folding the base material 21 in the same direction, and the folding direction of each diagonal fold line 24 is on the opposite side to each vertical fold line 23. In addition, the length of each vertical fold 23,
The interval between each fold 23 is set to be 2:1 in this embodiment.

Further, a reinforcing cloth 25 cut into a triangular shape and made of the same material as the base material 21 is attached to a portion of the base material 21 located between both folds 23 and 24 to partially increase the rigidity of the base material 21. In this case, each reinforcing cloth 25 is designed not to interfere with each fold line 23, 24. Next, the fixing margin 21b of the base material 21 is fixed to the base material 21.
The other end is fixed to make the base material 21 cylindrical. After that, as shown in FIG.
Using the mounting allowance 21a of the base material 21, attach the base material 2
Attach to both edges of 1. Each of these rigid wire rods 22 is made by rolling piano wire into a ring. Finally, the base material 21 is folded along each of the creases 23 and 24 to form the state shown in FIG. 4, and the entire discharge port 20 is heat-pressed to obtain the final folded state. do. At this time,
A release agent may be applied to the base material 21 and the reinforcing cloth 25 in advance so that they do not fuse together.

After doing this, one end edge of the base material 21 is sewn or welded to the periphery of the opening of the main body 11 constituting the container 10, as shown in FIG. Therefore, it is set to 20. In this way, each input/output port 20
There is no need to form a rope for closing and a hole for passing the rope through, and it can be formed using only the same material as the main body 11 of the container 10 and piano wire, resulting in a simple structure and reduced manufacturing costs. It can be made inexpensive. (Achievement of the objects of the present invention) (Operations and effects of the invention) The injection/discharge port 20 configured as described above is used as follows. That is, container 10
For the upper dumping port 20, if you lift the closed end formed in a circular shape by a rigid wire 22 while slightly rotating, the dumping port 20 will open as shown in FIGS. 1 and 3. It opens as shown.

On the other hand, the dumping port 2 located on the lower side of the container 10
0, if the open end of the dumping port 20 is left free, the dumping port 20 will open naturally due to its own weight. In this case, each dumping/discharging port 20 has a predetermined rigidity given to its opening end by the rigid wire 22, so it opens in a circular shape as shown in FIG. It can be easily connected to the outlet of a hopper for putting powder or granular material into the container, or to the input port of another hopper or container for storing powder or granular material. Furthermore, if you want to close each of the input/output ports 20, if you leave the upper input/outlet 20 as it is, it will close naturally due to its weight, and if you want to close the upper input/outlet 20, it will close naturally due to its weight. By applying a light force to the rigid wire rod 22 located at the edge of the opening and lifting it while slightly rotating it in a predetermined direction, the opening can be closed easily and within a short time. (Achievement of the object of the present invention. See FIGS. 2 and 4) In this case, in each input/output port 20, the base material 21
Both folds 23, 2 are bent in a certain direction.
4 is attached in advance, and the rigidity of each reinforcing cloth 25 prevents the base material 21 from being bent except at both creases 23 and 24. It is folded into the state shown in the figure.

The parts of the folded base material 21 intersect with each other without creating any gaps, and the contents inside the container 10 will not leak out. In addition, during the opening and closing work of each dumping/discharging port 20, the rigid wire rod 22 on the opening edge side of each dumping/discharging port 20 always holds the edge of each folded portion of the base material 21 in a predetermined position. ing. Therefore, each part of the base material 21 to be folded is not folded in a random manner, but is held in a predetermined position by the rigid wire 22 and folded in an orderly manner.

After each dumping port 20 is folded as described above, the container 10 located around each dumping port 20
When the side lids 13 to 13 are closed, each of the inlet and outlet ports 20 is reliably closed and does not open easily.

Furthermore, each of the dumping and discharging ports 20 closed as described above is folded flatly, so that it does not protrude from the container 10. (See FIG. 2) Therefore, when stacking a large number of containers 10, it is possible to stack them up in an orderly manner compared to conventional dumping and discharging ports that are closed with ropes or the like. Thereby, the stacking work can be done easily and within a short time without worrying about the containers 10 being tilted. (Achievement of the object of the present invention) Furthermore, as described above, the dumping and discharging port 20 according to the present invention utilizes the restoring force of each fold 23, 24, etc., instead of being closed by tying it with a conventional rope or the like. Since it is designed to be able to be closed easily, it does not necessarily require human intervention
It is possible to promote mechanization more than conventional input/output ports.

Furthermore, the dumping/discharging port 20 according to the present invention can be directly attached to the main body 11 of the flexible container 10.
Since it is only necessary to connect to the flexible container, the flexible container that is already in use can be easily improved by attaching it in place of the input/output port of the flexible container that has already been used.

In addition, in the above embodiment, an example was described in which the number of both fold lines 23 and 24 of the input/output port 20 was six each, but the number of both fold lines 23 and 24 may be changed as appropriate. . In this case, there is no problem as long as the vertical folds 23 are placed at equal intervals, but for the diagonal folds 24, depending on the interval between the vertical folds 23 and the length of the dumping port 20, The angle of inclination relative to the longitudinal fold 23 must be changed. A specific method for this may be as shown in FIGS. 7 to 10. Regarding the input/output port 20a shown in FIGS. 7 and 8, the number of each fold 23, 24 is four, and the ninth
Regarding the input/output port 20b shown in the figures and FIG. 10, the number of each fold line 23, 24 is eight.

As described above, although it is possible to change the number of each fold 23, 24 as appropriate, according to experiments by the inventors, it is better to set each fold 23, 24 to 6. could be manufactured easily, and the opening/closing operation and closing state could be made the best. In addition, in this embodiment, rigid wire rods 22 are attached to both upper and lower edges of each dumping/discharging port 20 (the opening edge and the edge connected to the container 10).
Although an example has been described in which the rigid wire rod 22 is attached, the rigid wire rod 22 located at the edge on the side connected to the container 10 may be omitted. This rigid wire 2
2 is provided to keep the opening of the main body 11 of the container 10 always in a constant state, and the opening of the main body 11 may be kept in a constant open state by other means. It is from. Furthermore, in this embodiment, the reinforcing cloth 2 is attached to the base material 21.
Although the example in which the reinforcing cloth 25 is partially fixed is explained, the reinforcing cloth 25 is
It may be carried out by fixing it to the entire surface of the base fabric 21.

(Effects of the Invention) As described in detail above, in the present invention, as exemplified in the above embodiment, "the injection/discharge port is formed in a cylindrical shape from a flexible material such as rubber or synthetic resin, flexible container 1
a base material 21 attached to the opening edge of the flexible container 10, and a lid that is attached near the opening of the flexible container 10 and closed by a rope 12 to cover the entire base material 21 when folded. a plurality of longitudinal folds 23 attached to the base material 21 and folding it in a certain direction, and the base material 21
A plurality of diagonal folds 24 extending from one end of each longitudinal fold 23 for bending the base material 21 to the opposite side of the fixed side are formed, and the longitudinal folds of the base material 21 are A reinforcing cloth 25 is fixed to each of the portions located between the vertical fold 23 and the diagonal fold 24, and the base material 21 is folded in a certain direction by the vertical fold 23, the diagonal fold 24, and the reinforcing cloth 25. Its characteristics are that the opening and closing operations can be performed easily and in a short time, that the protruding parts are extremely small when closed, that the structure is simple and lightweight, and that the manufacturing cost is low. It is possible to provide a discharge port that can be used to

Further, by providing the rigid wire 22 at both openings of the cylindrical base material 21, the open state at both openings can be maintained,
This makes it possible to more easily open and close the opening of the base material 21 constituting the input/output port 20.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flexible container according to the present invention with the dumping port open, and FIG. 2 is a perspective view of the flexible container with the dumping port closed.
Figure 3 is an enlarged perspective view of the inlet and outlet in the open state;
The figure is a plan view of the dumping port in the closed state, FIG. 5 is a front view of the dumping port before it is formed into a cylindrical shape, and FIG. 6 is an enlarged view of the dumping port taken along the - line in FIG. 1. FIG. Furthermore, Fig. 7 is a perspective view of a dispensing outlet with four vertical folds, Fig. 8 is a plan view of the dispensing outlet with the dispensing outlet closed, and Fig. 9 is a perspective view of the dispensing outlet with four longitudinal folds. A perspective view of the discharge port, and FIG. 10 is a plan view of the discharge port in a closed state. Explanation of symbols, 10...Flexible container,
11... Main body, 20, 20a, 20b... Input/discharge port, 21... Base material, 22... Rigid wire rod, 23...
Vertical fold, 24...Diagonal fold, 2
5...Reinforcement cloth.

Claims (1)

[Claims] 1. Formed of a flexible material, containing grains,
In a dumping port attached to the opening of a flexible container designed to store powder or granular materials such as chemical raw materials, the dumping port is formed into a cylindrical shape from a flexible material such as rubber or synthetic resin. , a base material attached to the opening of the flexible container at its opening edge; and a base material attached near the opening of the flexible container to cover the entire base material when folded, and closed by a rope. a plurality of vertical folds attached to the base material and folding it in a certain direction; and a plurality of vertical folds attached to the base material and extending from one end of each of the vertical folds. forming a plurality of diagonal folds for folding the base material to the opposite side of the fixed side; and reinforcing cloth on each of the portions of the base material located between the longitudinal folds and the diagonal folds. A dumping/discharging port characterized in that the base material is fixedly fixed to the vertical fold line, the diagonal fold line, and the reinforcing cloth so that the base material can always be folded in a certain direction. 2. According to claim 1, the cylindrical base material is capable of maintaining an open state at both openings by providing a rigid wire at both openings. Input/outlet as described.