JPH05319463A - Fluid container - Google Patents

Abstract

PURPOSE:To avoid such a situation that printing work or the like is suddenly interrupted by running out the entire content in a fluid container. CONSTITUTION:A cylindrical container main body 1 has at least an end plate 5 which closes one end of the container main body 1, and a stationary content discharge pipe 9 which has a content discharge port 17 at one end and communicates with the inside of the container main body 1 on the end plate 5 side is arranged inside the container main body 1. A first piston 21 which is movable in the axial direction is provided inside the container main body 1, and a fluid containing chamber 23 having an annular cross section is formed by the end plate 5 and the piston 21. A second piston 25 which is movable in the axial direction is furnished inside the content discharge pipe 9 and begins to move toward the content discharge port 17 when a notch 29 is torn off to open an air vent hole 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder / piston type fluid container for containing a fluid such as a liquid, a viscous substance, or a granular material. The present invention relates to a fluid container to be performed.

[0002]

2. Description of the Related Art A fluid container for containing a fluid such as a liquid, a viscous substance, or a granular material, has a cylindrical container body having at least one end closed by an end wall, and a container body inside the container body. A cylinder / piston type fluid container having a piston member which is fitted in contact with the container body so as to be movable in the axial direction in the axial direction and has a piston member defining an annular cross section between the fluid container and the end wall. Are known.

This type of fluid storage container is used, for example, as an ink bottle of a printing apparatus, and the storage outlet of the container is connected to a suction pump so that the storage container, that is, the printing ink can be stored. It is designed to be taken out by power.

[0004]

The above-mentioned cylinder /
In the piston type fluid storage container, compared to the laminated tube type fluid storage container, the contents stored in the container can be taken out more reliably without waste, but on the other hand, the fluid storage container is stored. When all the things are taken out,
No matter how much the container is modified, the contents cannot be taken out from the container.

Therefore, as in the ink bottle of the printing apparatus, the contents of the fluid container, that is, the printing ink is taken out by a power system, and all the contents of the fluid container are taken out to replace the container. If a new fluid container is not prepared in advance before the time comes, printing will suddenly be unable to continue.

In order to avoid the occurrence of the above-mentioned inconvenient state, the operator must always pay attention to the remaining amount of the contents of the fluid container, which imposes a burden on the operator and also It lacks certainty.

The present invention has been made by paying attention to the above-mentioned problems in the conventional cylinder / piston type fluid container, and by taking out all the contents of the fluid container. It is possible to avoid suddenly becoming unable to continue work such as printing, and at the same time, it is possible to reliably inform the operator that the contents of the fluid storage container have all been taken out and the time for container replacement is approaching. The purpose is to provide a container.

[0008]

According to the present invention, the above-mentioned objects are communicated with a cylindrical container body having at least one end closed by an end wall, and the inside of the container body on the side of the end wall. A fluid storage chamber is provided between the storage container tube having an storage outlet at one end and the container body so as to be inscribed in the container body so as to be movable in the axial direction in the container body. A first piston member to be defined, a second piston member that is inscribed in the stored-material take-out pipe body to be movable in the axial direction in the stored-goods take-out pipe body, and the second piston Locking means for releasing the lock of the second piston member by locking the member in the initial position and applying an external operation, and allowing the second piston member to move to the side of the contents taking-out port. With a fluid storage container characterized by having It is made.

[0009]

According to the above-mentioned structure, even if the first piston member reaches the stroke end on the side of the end wall of the container body and all the contents in the fluid storage chamber of the container body are taken out,
An external operation is applied to the locking means to release the locking of the second piston member, and the second piston member is brought into a state in which the second piston member can move to the side of the stored-material take-out port. Remaining contents will be taken out.

[0010]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 to 3 show a first embodiment of a fluid container according to the present invention. In this figure, reference numeral 1
Indicates the container body. The container body 1 is composed of a cylindrical body 3 made of an appropriate material, and an end cover 5 made of synthetic resin, which is fixedly mounted at one end on the right side of the cylindrical body 3 in the figure and closed at one end. Reference numeral 5 forms an end wall which closes one end of the container body 1 together with a spacer 7 which is mounted over the inner end surface of the container.

At the central portion of the container body 1, a contents take-out tube body 9 made of an appropriate material is fixedly arranged.
The contained matter take-out pipe body 9 is fitted into the pipe body supporting recess 11 formed in the end cover 5 at one end on the right side in the figure, and the other end part of the cylindrical body 3 is at the other end on the left side in the figure. It is fitted in the central hole 15 of the end wall portion 13 integrally formed with, and is fixedly supported by these, and extends in the axial direction in the container body 1 as an internal pipe body. Further, the stored-material take-out pipe 9 extends through the central hole 15 of the end wall portion 13 at the other end on the left side in the figure, and the tip thereof constitutes a stored-material take-out port 17 opened to the outside of the container. is doing.

A communication hole 19 is formed on the end cover 5 side of the contents taking-out pipe 9 for connecting the internal space of the contents taking-out pipe 9 and the internal space of the container body 1 to each other. The container body 1 is airtightly inscribed in the container body 1 and airtightly fitted in the container take-out pipe 9 so as to move in the container body 1 in the axial direction. The piston member 21 is arranged, and the first piston member 21 is arranged between the spacers 7 and has a fluid storage chamber 23 having an annular cross section.
Has been demarcated. As shown in FIG. 1, the initial position of the first piston member 21 is the stroke end position on the left side in the figure in which it abuts against the end wall portion 13, and the first piston member 21 is in this initial position. The volume of the fluid storage chamber 23 is set to the maximum value.

The fluid storage chamber 23 is provided with a storage port 17 through the communication hole 19 and the internal space of the storage container tube 9.
The stored contents such as printing ink filled in the fluid storage chamber 23 are taken out from the stored-material take-out port 17 via the communication hole 19 and the stored-material take-out pipe 9.

A second piston member 25 is provided in the stored-material take-out pipe body 9 so as to be airtightly inwardly fitted to the stored-material take-out pipe body 9 and movable in the axial direction in the stored-goods take-out pipe body. .. The second piston member 25 is made of an appropriate material, and its initial position is set to the rightmost end in the drawings of the container take-out tube 9 as shown in FIGS. In other words, the communication hole 19 allows communication between the fluid storage chamber 23 and the inside of the stored-material take-out pipe, in other words, the stored-material take-out port 17
It establishes communication with and does not prevent this.

The end cover 5 forms an end wall on the right side in the figure of the container take-out tube 9 at the tube body supporting recess 11, and the air vent hole 27 ( Notches 29 are formed as locking means for forming (see FIG. 3).

Further, a back air vent hole 31 is formed in the end wall portion 13 of the cylindrical body 3 for ensuring the movement of the first piston member 21 to the right side in the figure, and the first piston member 21 is also formed. An air vent hole 33 that is used when the fluid storage chamber 23 is filled with an item is formed therein. The air bleeding hole 33 is configured to be closed by filling the fluid containing chamber 23 with the contained material by heat melting or the like.

Also, in the illustrated embodiment, the inner tube 9
A check projection 35 having a non-return shape is formed on the outer periphery of the first piston member 21 in order to prevent the first piston member 21 from moving in the reverse direction (moving from the right side to the left side in the drawing).

In the fluid container having the above-mentioned structure, first of all, when the container is filled with the contents,
As shown in FIG. 1, the first piston member 21 is positioned at the initial position on the side of the end wall portion 13 of the cylindrical body 3, and the air vent hole 33 is opened so that the first piston member 21 is stored in the storage container 17 through the storage outlet 17. The substance is pressure-filled into the fluid containing chamber 23 and the contained substance take-out pipe body 9 through the internal space of the contained substance take-out pipe body 9 and the communication hole 19. When this pressure filling is completed, the air vent hole 33 is closed by, for example, heat melting the air vent hole 33. This work is performed by using the back air vent hole 31 of the end wall portion 13 of the cylindrical body 3 as a working hole.

The contents stored in the container are taken out by connecting the contents taking-out port 17 to a suction port of a suction pump (not shown). Container outlet 17
Is connected to a suction port of a suction pump (not shown), and when a suction force (negative pressure) acts on the suction port, the storage container 9
The contents filled in and the contents filled in the fluid storage chamber 23 are taken out through the communication hole 19 and the internal space of the contents taking-out pipe body 9 so as to be sucked out from the contents taking-out port 17. .. The first piston member 21 is axially moved to the right side in the drawing axially in the container main body 1 in response to the removal of the stored contents in the storage container discharge tube 9 and the fluid storage chamber 23.

On the other hand, unless the air vent hole 27 is opened, the back of the second piston member 25 is a closed space, and air is not vented. Even if the suction force is exerted via the contained matter existing in the internal space of the contained matter take-out pipe 9, the second piston member 25 is maintained in the initial position as shown in FIG. To do.

As shown in FIG. 2, when the first piston member 21 comes to the stroke end on the right side in the figure in which the first piston member 21 abuts on the spacer 7, all the contents of the fluid storage chamber 23 are taken out. It will be. However, in this state, the contents are still left in the contents taking-out tube body 9.

As shown in FIG. 3, the notch 2 is used to take out the contents remaining in the contents taking-out pipe 9.
9 can be torn off by hand to form the air vent hole 27 in the back portion of the second piston member 25, which can be performed.

In this state, the suction force acts on the second piston member 25 from the contained substance take-out port 17 through the contained substance existing in the internal space of the contained substance take-out tube body 9, so that the second The piston member 25 of FIG.
To the side, and by this movement, the contained items remaining in the contained substance taking-out pipe body 9 are taken out from the contained substance taking-out port 17.

By the above-described operation, when the first piston member 21 is located at the stroke end where it abuts the spacer 7 and all the contents in the fluid storage chamber 23 have been taken out, the moving body storage container is replaced. It is possible to notify the operator that the time is about to come, and the notch 29 is torn off by an external operation by the operator at this stage, so that the capacity of the contents remaining in the contents taking-out pipe body 9 after this time For that reason, it is possible to prevent the contents contained in the fluid container from being continuously taken out, and it is possible to avoid a situation where the whole container suddenly becomes empty.

The air vent hole 27 is opened / closed, that is, the second piston member 25 is locked by the notch 29 which is torn off by hand.
However, as shown in FIG. 4, the lid member 39 is provided at the installation portion of the fluid container and is driven by the actuator 37 between the position where the air vent hole 27 is closed and the position where the air vent hole 27 is opened. May be.

The second piston member 25 may be mechanically locked by a locking claw member 41 or the like which is detachably engaged with the second piston member 25, as shown in FIG. Good.

FIG. 6 shows another embodiment of the fluid container according to the present invention. In FIG. 6, the parts corresponding to those in FIGS. 1 to 3 are indicated by the same reference numerals as those in FIGS. In this embodiment, the container outer shell 1 is composed of a cylindrical body 3 having openings at both ends, and end covers 4 and 5 closing both ends of the cylindrical body 1, and the inner space of the container outer shell 1 and the inner tubular body. A communication hole 19 is formed on the left end cover 4 side in the drawing so as to communicate with the inner space of the communication chamber 9.

In this case, the initial position of the first piston member 21 is the stroke end position where it abuts the end cover 5 on the right side in the figure, as shown by the solid line in FIG. The end wall that closes one end is constituted by the left end cover 4 in the figure.

Also in this embodiment, the initial position of the second piston member 25 is the rightmost end in the figure of the inner tube body 9,
A notch 29 is formed in the end wall on the right side in the figure of the container take-out tube 9 formed by the end cover 5 as a locking means that is manually cut to form an air vent hole 27 (see FIG. 3). ..

In this embodiment, the container take-out port 1
7 is connected to the suction port of a suction pump (not shown),
When a suction force is applied to this, the contents stored in the fluid storage chamber 23 are taken out through the communication hole 19 and the internal space of the internal pipe body 9 so as to be sucked out from the contents extraction port 17, Accordingly, the first piston member 21 moves in the container outer shell 1 in the axial direction to the left side in the drawing. Also in this case, unless the air vent hole 27 is opened, the second piston member 25 remains locked in the initial position, and the second piston member 25 remains in the initial position and does not move.

The first piston member 21 is the end cover 4
When it is located at the stroke end on the left side in the figure in contact with, it means that all the contents in the fluid storage chamber 23 have been taken out. At this stage, the notch 29 is torn by hand to form the air vent hole 27 in the back portion of the second piston member 25, so that the second piston member 25 is also moved from the initial position in this embodiment. It becomes possible to move the inside of the stored-material take-out tube 9 to the left side in the figure, that is, to the side of the stored-material take-out port 17, and the movement of the second piston member 25 leaves the inside of the stored-goods take-out tube 9. The contained contents will be taken out.

In any of the above-mentioned embodiments, the contained substance take-out tube body 9 is provided in the container body 1 and functions as a guide for the axial movement of the first piston member 21. The contained substance take-out pipe body 9 does not necessarily have to be provided inside the container body 1, and may be provided outside the container body 1 as shown in FIG. 7.

[0034]

As can be understood from the above description, according to the fluid container according to the present invention, the first piston member reaches the stroke end on the side of the end wall of the container body to accommodate the fluid in the container body. Even if all the contents in the chamber are taken out, the locking means such as the notch is externally operated to release the locking of the second piston member, and the second piston member moves to the contents extraction port side. By doing so, the stored contents can be taken out from the stored contents in the container, so that all the contents stored in the fluid storage container have been taken out, and the work such as printing suddenly continues. It is possible to prevent the disabled state, and also to reliably notify the operator that the contents of the fluid storage container are all taken out and the time for container replacement is approaching. In addition, since the contained items are taken out from the contained substance take-out pipe body, all the contained items filled in the fluid container can be taken out without being wasted.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a fluid container according to the present invention in an initial state.

FIG. 2 is a cross-sectional view showing a first embodiment of a fluid storage container according to the present invention with a first piston member positioned at a stroke end.

FIG. 3 is a cross-sectional view showing a first embodiment of a fluid container according to the present invention in a second piston member moving state.

FIG. 4 is a cross-sectional view showing a third embodiment of a fluid container according to the present invention in an initial state.

FIG. 5 is a sectional view showing a fourth embodiment of a fluid container according to the present invention in an initial state.

FIG. 6 is a sectional view showing a fifth embodiment of the fluid container according to the present invention in an initial state.

FIG. 7 is a sectional view showing a sixth embodiment of the fluid container according to the present invention in an initial state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 9 Containing substance taking-out pipe body 17 Contained substance taking out port 19 Communication hole 21 First piston member 23 Fluid container chamber 25 Second piston member 27 Air vent hole 29 Notch 39 Lid member 41 Locking claw member

Claims (1)

[Claims] 1. A cylindrical container body having at least one end closed by an end wall, and a container take-out tube body communicating with the inside of the container body at the end wall side and having a container take-out port at one end. A first piston member that is internally fitted to the container body and is movable in the container body in the axial direction, and that defines a fluid storage chamber between the end wall and the container body; A second piston member that is internally fitted to the tubular body and is movably provided in the axial direction in the tubular body for taking out the contents, and the second piston member is locked at an initial position to be given an external operation. Locking means for releasing the locking of the second piston member and allowing the second piston member to move to the side of the stored-material take-out port. Body container.