JPH1035728A - Bag-in box and supply and discharge port opening and closing apparatus thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag-in box generating no leakage of a liquid even during transport and a supply and discharge port opening and closing apparatus thereof. SOLUTION: A main body 16 equipped with a liquid passage 20, the branch passage 21 arranged so as to communicate with the passage 20 and the member mounting passage 22 arranged so as to coaxially communicate with the fluid passage 20, the opening and closing shaft 17 coaxially inserted in the liquid passage 20 and the member mounting passage 22 and the moving device 18 of the opening and closing shaft 17 equipped with a cock opening jig 42 and a cock closing jig 41 are provided and, when the supply and discharge port 5 of an inner bag 2 opens and closes a bag-in box 13 internally closed by a cock 11, the supply and discharge port 5 and the main body 16 as well as the cock 11 and the opening and closing shaft 17 are respectively connected and the opening and closing shaft 17 is reciprocally moved by the cock opening jig 42 and the cock closing jig 41 to perform the opening and closing of the cock 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-in-box plugged from the inside and an apparatus for opening and closing a supply / discharge port of the bag-in box from the outside.

[0002]

2. Description of the Related Art A "fluid connector" (actually, Japanese Patent Publication No. 7-18) is constructed so that a spout of a bag-in-box can be freely opened and closed.
614). First, make a pair with male and female connectors.
It has the function of a plug at the spout of the bag-in-box, and has a thin film at the bottom of the hollow body for closing the fluid passage hole and a valve for opening and closing the passage hole. And
Attach the male connector to the female connector to break the thin film, and at the same time open the valve to allow the liquid to drain,
When the male connector is pulled out, the valve is closed.

[0003]

However, in the above-mentioned conventional example, the valve formed on the female connector merely closes the fluid passage by the elastic pressing force of the thin flexible valve itself. Therefore, if the capacity of the bag-in-box becomes large, for example, 1 kl, there is a problem in the sealing force. In addition, when the bag-in-box is transported, the vibration naturally occurs, and the reliability of the seal is further concerned. Therefore, the inventor of the present application has made it possible to reliably seal by plugging the spout of the bag-in-box from the inside, and to connect the opening and closing shaft to the stopper from the outside and make the shaft reciprocally movable, The inventor of the present invention has found that it is possible to open and close even a plug which is plugged from the inside, and completed the present invention.

[0004]

That is, the present invention relates to a bag-in-box in which a supply / discharge port of an inner bag is plugged from the inside, a liquid passage, a branch passage communicated with the passage, and a fluid passage. It is composed of a main body having a member mounting passage which is coaxially communicated and installed, an opening and closing shaft coaxially inserted into the liquid passage and the member mounting passage, and a moving device of an opening and closing shaft having a plug opening and closing member. When opening / closing the bag-in-box plug with the supply / discharge port of the inner bag closed from the inside, the supply / discharge port and the main body, and the plug and the opening / closing axis are respectively connected, and the plug is opened / closed with the plug opening / closing stopper. And a supply / discharge opening / closing device for a bag-in-box.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, reference numeral 1 denotes a carton, in which an interior bag 2 is housed, which is referred to as a so-called bag-in-box 3. FIG. The interior bag 2
It comprises an inner bag 4 formed of a plastic sheet material and a supply / discharge port 5 provided with a function of filling and discharging the stored liquid. The inner bag 4 has a circular opening 6 below, and a pipe-shaped supply / discharge port 5 is provided therein. Supply / drain 5
Is provided with a disk-shaped flange 7 on one side, and a flange 9 having a tapered shoulder 8 formed on the other side.

[0006] The supply / discharge port 5 is fixed to the opening 4 of the inner bag 2 by bonding or heat sealing through a flange 7 in communication therewith. The supply / discharge port 5 is preferably made of a plastic material for the sake of being fixed to the inner bag 4, but may be made of a steel material such as stainless steel by using rivets or the like. On the other hand, a plug 11 is inserted into the hollow portion 10 of the supply / discharge port 5 to seal the stored liquid. Then, the hollow portion 10 of the supply / discharge port 5 is formed so as to form a shape that expands toward the inner bag 4, that is, forms a part of a cone, and the stopper 11 also forms a part of the cone accordingly. I do. With this configuration, it is possible to withstand vibration during transportation. Further, a female screw 12 is provided on an outer surface, that is, a small-diameter end portion of the plug 11, and is screwed and connected to an opening / closing shaft 17 described later, thereby forming the plug 11 to be freely opened and closed. The inner bag 2 is provided with the supply / discharge port 5 into which the stopper 11 is press-fitted.
After being press-bonded to the opening 6, the inner bag 2 is sealed. The carton 1 is provided with an opening 13 from which the supply / discharge port 5 is projected.

Reference numeral 15 denotes a device for opening and closing the plug 11 in the bag-in-box 3. The device 15 mainly includes a main body 16, an opening / closing shaft 17 inserted through the main body 16 to open and close the plug 11, a moving device 18 for the shaft 17, and a main body 16. And a connecting member 19 for connecting the supply / discharge port 5. In this embodiment, a T-shaped joint is used as the main body 16, and has three passages that open to the outside. One passage is a liquid passage 20, a branched passage is a branch passage 21, and a moving device 18 is mounted. The passages are respectively referred to as member mounting passages 22 and they are in communication with one another. Each passage opening has tapered shoulders 23, 24, 25
Flanges 26, 27, 28 having
These flanges 26 to 28 have the same shape as each other, and commercially available standard products can be used. Therefore, the supply and discharge port 5
By making the flange 9 of the same shape as the flange 26 of the main body 16, a commercially available coupling tool 19 can be used. The liquid passage 21 is connected to the supply / discharge port 5 and the branch passage 21 is connected to the outside.

Next, the moving device 18 comprises a shaft holder 40 for holding the opening / closing shaft 17, a stopper 41 for moving the opening / closing shaft 17 rightward in FIG. 2, and a stopper 42 for moving leftward similarly. And a connector 43 for fixing the shaft holder 40 to the main body 16. The shaft holder 40 includes a pipe-shaped member 44 and a flange member 45, and the opening / closing shaft 17 is movably inserted into a hollow portion 46 of the pipe-shaped member 44. The outer peripheral portion of the flange member 45 is
The supply / drain port 5 and the main body 1 are formed in the same shape as the flange 28.
As in the case of No. 6, they are connected by a connecting tool 43.

The opening / closing shaft 17 has screws 48, 4 at its both ends.
9 is provided at one end, for example, the screw 4 at the left end.
8 is configured to be screwed with the stopper 11. The opening / closing shaft 17 is installed coaxially with the axis of the liquid passage 20 and the member mounting passage 22, and an O-ring 47 is attached to a portion between the shaft holder 40 and the opening / closing shaft 17.
And the shaft holder 40 are sealed.

On the other hand, the right end screw 49 is provided with the stopper 4.
1 is screwed via a cushion material 50, and has a function of closing the stopper 11 by closing the stopper 41 so as to move the opening / closing shaft 17 rightward. A member 57 provided at the center of the opening / closing shaft 17 is a stopper,
Is prevented from coming off from the opening / closing shaft 17, and may be provided as needed. Further, the stopper releasing tool 42 has a pair of hook members 51 at its distal end, a portal member 52 formed of a band-shaped member with a female screw at its target shaft, and a distal end 53 which is screwed with the member 52. It is composed of a handle 55 that contacts the end 54 of the opening / closing shaft 17. The stopper opening tool 42 is shown in FIG.
As shown in (2), the hook member 51 is engaged with the connecting tool 43 and the handle 55 is tightened, whereby the opening / closing shaft 17 is moved to the left to open the plug 11.

FIG. 3 shows a connecting tool, and a pair of semi-wheels 3 having tapered recesses 29, 30 on the inner surfaces thereof.
One end of the pair of half wheels 31, 32 is rotatably supported by pins 33, and the other end is fastened by bolts 34 and nuts 35.
The abutted flanges 9 and 26 are connected to a pair of half-wheels 31 and 3.
2 and cover it with a bolt 34
And nuts to tighten the flanges 9, 26
And a reliable sealing force can be obtained.

[0012]

The interior bag 2 is stored in the carton 1 with the supply / discharge port 5 closed by the stopper 11, and the opening 1 of the carton 1 is opened.
The supply / discharge port 5 is made to protrude outside from 3. Next, after the main body is interposed with the packing 36 and installed at the supply / drain port 5 by the connecting tool 19, the opening / closing shaft 17 is inserted into the liquid passage 20 and the member mounting passage 22 of the main body 16 and screwed into the stopper 11 to connect them. I do. Next, the shaft holder 40 is fitted to the opening / closing shaft 17 and installed on the main body with the connecting tool 43, and the stopper releasing tool 42 is connected to the hook member 51 with the connecting tool 43, and further, is opened and closed with the tip 53 of the handle 55. When the handle 11 is further closed by bringing the end into contact with the end 54 of the shaft 17, the plug 11 is opened, and in this state, the liquid is filled from the branch passage 21. After filling with the liquid, the stopper 11 is closed by removing the stopper 42 and screwing the stopper 41 into the screw portion 49 and tightening it. In this state, remove the connecting tool 19, and further,
After removing the open / close shaft 17 from 1, the bag-in-box 3
Is transported. At the transfer destination, the liquid is discharged from the bag-in-box 3 by the same means as described above.
At this time, if the opening and closing device 15 is left attached to the bag-in-box, the discharge of the liquid can be stopped at an arbitrary time.

FIG. 4 shows another embodiment. In the present embodiment, the main body 16 and the shaft holder 40 are integrated. In this case, a flange 56 is provided at the opening of the member mounting passage 22 to serve as an engaging member of the plug opening tool 42. According to this embodiment,
The connecting member 43 can be omitted.

[0014]

As described above, the present invention is constructed as described above, whereby a reliable seal that can withstand transportation can be obtained, and the discharge of the liquid stored in the bag-in-box can be stopped appropriately.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a bag-in-box.

FIG. 2 is a front sectional view of a bag-in-box opening / closing device.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a view showing another embodiment of a bag-in-box opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carton 2 Inner bag 3 Bag-in-box 4 Inner bag 5 Supply / discharge port 11 Plug 15 Opening / closing device 16 Main body 17 Opening / closing axis 18 Moving device 19 Connector 20 Liquid passage 21 Branch passage 22 Member mounting passage 40 Shaft holder 41 Plug closing member 42 Plug opening tool 43 Connecting tool

Claims (2)

[Claims] 1. A bag-in-box in which a supply / discharge port of the interior bag is plugged from the inside. 2. A main body having a liquid passage, a branch passage communicated with the passage, and a member mounting passage coaxially communicated with the fluid passage, and a coaxially inserted through the liquid passage and the member mounting passage. Opening / closing shaft, a moving device for the opening / closing shaft having a stopper opening / closing member and a stopper / closing member. The opening / closing port of the inner bag is used for opening / closing the stopper of the bag-in-box which is closed from the inside. A bag-in-box opening / closing opening / closing device, wherein the opening / closing opening and closing shaft are respectively connected to the opening / closing unit and the opening / closing unit.