JP3721525B2 - Method and apparatus for taking out contents - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal container storing contents such as ink, and more particularly to a method and apparatus for taking out contents by opening the bottom and taking out the contents by air pressure when taking out the contents.
[0002]
[Prior art]
Conventionally, as a method for taking out the contents stored in the metal container, there are methods as shown in FIGS. In the figure, reference numeral 50 denotes a metal container. A metal or synthetic resin inner cylinder 51 is suspended in the metal container 50, and contents such as ink are stored in the inner cylinder 51. An upper lid 52 is wound around the opening of the metal container 50, and a mounting cup 54 equipped with a valve 53 is clinched to the upper lid 52. And if it is a normal double aerosol container, the gas (propellant) which crushes the inner cylinder 51 is filled between the metal container 50 and the inner cylinder 51, but gas is contained in this metal container 50. Not filled. In addition, an opening 58 for supplying air is formed in the center of the bottom 55 of the metal container 50 from the beginning.
[0003]
Then, air is filled into the metal container 50 from the opening 58 by the filling machine 59, and the inner cylinder 51 is crushed by the supplied air. Next, the content 57 is discharged to the outside by opening the valve 53. As the contents 57, a substance that easily changes in quality when exposed to external air for a long time, such as ink and paint, is stored.
[0004]
[Problems to be solved by the invention]
However, in such an invention, as shown in FIG. 4, the crushing condition of the inner cylinder 51 is not perfect, so that the content 57 remains in the inner cylinder 51. In addition, there is a drawback that all the contents in the inner cylinder 51 cannot be taken out during use, and 20 to 30% of the inner capacity remains.
[0005]
The present invention has been made paying attention to such a conventional problem, and provides a method and an apparatus for taking out contents in which the remaining amount of contents in a metal container is remarkably small when taking out the contents. With the goal.
[0006]
[Means for Solving the Problems]
In order to solve this problem, according to a first aspect of the present invention , a piston is provided in a lower part of a metal container having a thin part formed at the bottom so as to be movable up and down, a valve is provided at an upper end of the metal container, By storing the contents filled in the upper part of the piston in the metal container without filling with a propellant such as gas in the lower space, and breaking through the thin part formed at the bottom of the metal container at the time of use , an air supply hole formed in the bottom portion, the air supply into the metal container from the air supply holes and then contact the filling machine at the bottom, the piston in the metal container by pressure of air the feed It is a content extraction method characterized by raising the content and taking out the content from the mouth of the valve.
The second invention, the thin portion is formed at the bottom of the metal container, and the opening of the metallic container, with clinching or tightening the mounting cup with the valve piston is furnished in a metal container The upper portion of the piston is filled with contents, and the lower portion is not filled with a propellant such as gas , and a space portion that does not communicate with the outside is formed until the thin portion is drilled. This is a content take-out device.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The embodiment of the first invention according to this application relates to a method of taking out the contents 8, and as shown in FIG. 1, a thin portion 3 is formed at the center of the bottom 6 of the metal container 1, and the contents When the 8 is taken out, the thin portion 3 is broken through. Then, as shown in FIG. 2, the air supply hole 4 is formed in the bottom portion 6. Next, the mouth of the filling machine 5 is brought into contact with the air supply hole 4 of the bottom portion 6, and air is supplied into the metal container 1 from the air supply hole 4. Then, the piston 8 housed in the metal container 1 is pressed from the lower side of the metal container 1 by this air pressure and lifted, and the valve 9 is opened, whereby the contents 8 can be taken out. The feature of this take-out method is that the thin-walled portion 3 is pierced when the contents 8 are taken out, and the metal container 1 is sealed until then.
[0008]
Next, an embodiment of the second invention according to this application will be described with reference to the drawings. The second invention relates to an apparatus used for the taking-out method of the first invention. As shown in FIG. 1, a mounting cup 10 having a valve 9 is clinched at the opening of the metal container 1. As another embodiment, the mounting cup 10 may be of a type that is wound around the opening of the metal container 1. A piston 7 is provided in the metal container 1 so as to be movable up and down, and a content 8 such as ink is accommodated in the upper portion of the piston 7. The lower portion of the piston 7 is not filled with a propellant such as gas, and a space 11 (equal to atmospheric pressure) is formed. Further, a thin portion 3 is formed at the center of the bottom portion 6 of the metal container 1 so as to be easily broken. The shape of the top surface of the piston 7 is such that when the piston 7 rises and contacts the mounting cup 10 as shown in FIG. 2, there is no gap as much as possible between the piston 7 and the mounting cup 10. It is configured in shape. That is, the shape of the top surface of the piston 7 is set in accordance with the shapes of the valve 9 and the dip tube 9a so that the valve 9 has a convex shape, the piston 7 has a concave shape, and the concave and convex portions are fitted. A plurality of protruding pieces 12 are formed on the outer periphery of the piston 7 so as to come into contact with the inner peripheral surface of the metal container 1 at appropriate intervals. Thus, when the piston 7 is inserted into the metal container 1, the air in the space 11 can be drawn upward from the gap between the protruding pieces 12, so that the piston 7 can be easily inserted. .
[0009]
Next, the operation of the present invention will be described. As shown in FIG. 2, by using a filling machine 5 from the air supply hole 4 in the bottom portion 6 to supply air to the metal container 1 and raise the piston 7, pressure is applied to the contents 8, and the valve 9 is turned on. By opening, the contents 8 can be taken out from the valve 9 to the outside. According to the present invention, as shown in FIG. 2, when the piston 7 comes into contact with the lower surface of the mounting cup 10 at the top of the metal container 1, approximately 95% of the contents can be taken out.
[0010]
【The invention's effect】
As described above, according to the present invention, the airtightness of the contents can be maintained until it is used, and the residual amount of the contents in the metal container is remarkably reduced.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing an unopened apparatus according to the present invention.
FIG. 2 is a front sectional view showing the apparatus according to the present invention in a state in which air is supplied after taking out and contents are taken out.
FIG. 3 is a front sectional view showing a conventional apparatus.
FIG. 4 is a front sectional view showing a state in which contents are taken out using a conventional apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal container 3 Thin part 4 Air supply hole 5 Filling machine 6 Bottom part 7 Piston 8 Contents 9 Valve 10 Mounting cup 11 Space part

Claims (4)

A piston is mounted on the bottom of a metal container with a thin wall at the bottom, and a valve is provided at the upper end of the metal container, and the space below the piston is not filled with a propellant such as gas. Store the product in a state filled with the top of the piston in the metal container,
At the time of use , an air supply hole is formed in the bottom by breaking through the thin wall formed in the bottom of the metal container,
Next, the filler is brought into contact with the bottom to supply air into the metal container through the air supply hole ,
And raised the piston in the metal container by pressure of air the supply, take-out method of the contents, characterized in that the contents removed from the mouth portion of the valve. Form a thin wall at the bottom of the metal container,
And clinch or tighten the mounting cup with the valve in the opening of the metal container,
Inside the metal container is a piston,
The top of the piston is filled with contents,
An apparatus for taking out contents according to claim 1, wherein the lower portion is not filled with a propellant such as gas and a space portion is formed which does not communicate with the outside until the thin-walled portion is drilled .   The valve comprises a dip tube;
3. The content take-out apparatus according to claim 2, wherein the top surface of the piston is formed in a concave shape so as to fit the concave and convex portions in accordance with the shapes of the valve and the dip tube.   The content take-out device according to claim 2, wherein a plurality of protruding pieces that contact the inner surface of the metal container are formed on the outer periphery of the piston at an appropriate interval.

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