JP6586041B2 - Fixed dispensing system - Google Patents

Description

  The present invention relates to a quantitative discharge system for quantitatively discharging a liquid material to an article placed in a reduced pressure atmosphere.

  While it is easy to accurately dispense a liquid substance to an article under atmospheric pressure, the pressure in the space in which the article is placed when a liquid substance is dispensed quantitatively to an article placed in a reduced-pressure atmosphere. Therefore, there is a difficulty in that the discharge amount of the liquid material is likely to fluctuate. Therefore, a configuration has been proposed in which a cylinder is fixed to a chamber in which articles are placed, and a valve is provided in a discharge path from the cylinder (see Patent Document 1). In such a quantitative discharge system, after the pressure in the chamber is reduced, the valve is opened, and the liquid material in the cylinder is quantitatively discharged by the piston. Further, in Patent Document 1, an orifice is provided on the front end side of the discharge passage, and even when the valve is opened with the inside of the chamber decompressed, the liquid material is inadvertently discharged due to surface tension. A configuration to prevent is proposed.

JP 2014-165220 A

  However, in the configuration disclosed in Patent Document 1, it is difficult to reliably prevent the liquid material from flowing out only with the surface tension at the orifice when the pressure in the chamber is low when the valve is opened. Therefore, there is a problem that the accuracy of the discharge amount is low.

  In view of the above problems, an object of the present invention is to provide a quantitative discharge system capable of accurately discharging a liquid material to an article placed in a reduced pressure atmosphere.

  In order to solve the above problems, a quantitative discharge system according to the present invention includes a chamber in which articles are disposed, a container disposed outside the chamber, a quantitative filling device that quantitatively fills the container with a liquid material, A self-sealing type nozzle that is arranged toward the article inside the chamber in communication with the container and automatically opens and closes a nozzle hole by a pressure difference between the inside and the outside, and a decompression pump that decompresses the inside of the chamber And a pressurizing mechanism that pressurizes the liquid material in the container and discharges the liquid material from the nozzle toward the article in a state where the inside of the chamber is decompressed by the decompression pump. It is characterized by that.

In the present invention, the container is arranged outside the chamber in which the article is arranged, and the nozzle arranged toward the article in the chamber is a self-sealing in which the nozzle hole is automatically opened and closed by the pressure difference between the inside and the outside. It is a type. Accordingly, the liquid material is quantitatively filled into the container by the quantitative filling device, and the liquid material is not discharged from the nozzle toward the article until the liquid material is pressurized by the pressurizing mechanism after the inside of the chamber is decompressed by the decompression pump. . Then, after the inside of the chamber is decompressed by the decompression pump, when the liquid material in the container is pressurized by the pressurizing mechanism, all of the liquid material in the container is discharged toward the article. Here, since the quantitative filling device quantitatively fills the container with the liquid material under atmospheric pressure, the liquid material is accurately quantitatively filled into the container. Therefore, the liquid substance can be accurately and quantitatively discharged to the article placed in the reduced pressure atmosphere, and the contact between the liquid substance and air, the mixing of air into the liquid substance discharged to the article, and the like can be suppressed. it can. Further, since the nozzle is a self-sealing type, it is not necessary to provide a valve between the nozzle and the container, and it is not necessary to perform an opening / closing operation of the valve.

  In this invention, it has a cover which covers the space where the said container is arrange | positioned, The said pressurization mechanism can employ | adopt the aspect which raises the pressure in the said cover and pressurizes the said liquid substance in the said container. According to such a configuration, unlike a mechanical pressurizing mechanism, the liquid material in the container can be pressurized with a simple configuration.

  In the present invention, it has a communication pipe communicating with the inside of the chamber and the inside of the cover, and a valve provided in the communication pipe, and when the decompression pump decompresses the inside of the chamber, It is possible to adopt a mode in which the valve is opened and the inside of the cover is in a reduced pressure state, and the valve is closed when the pressurizing mechanism pressurizes the inside of the cover. According to this configuration, since the inside of the cover can be in a reduced pressure state until the discharge of the liquid material to the article is started, contact between the liquid material and air can be suppressed.

  In the present invention, it is possible to adopt a mode in which the nozzle has a nozzle tube in which the nozzle hole opens on a side surface and a rubber tube for sealing attached to the nozzle tube so as to close the nozzle hole. . According to such a configuration, a self-sealing nozzle can be configured with a simple configuration.

  In the present invention, it is possible to adopt a mode in which a plurality of the articles are arranged in the chamber, and the container and the nozzle are provided for each of the plurality of articles.

  In the present invention, the article is, for example, a case for a battery, an electric double layer capacitor, or an electrolytic capacitor, and the liquid material is a driving electrolyte solution for a battery, an electric double layer capacitor, or an electrolytic capacitor. It is.

  In the present invention, the container is arranged outside the chamber in which the article is arranged, and the nozzle arranged toward the article in the chamber is a self-sealing in which the nozzle hole is automatically opened and closed by the pressure difference between the inside and the outside. It is a type. Accordingly, the liquid material is quantitatively filled into the container by the quantitative filling device, and the liquid material is not discharged from the nozzle toward the article until the liquid material is pressurized by the pressurizing mechanism after the inside of the chamber is decompressed by the decompression pump. . Then, after the inside of the chamber is decompressed by the decompression pump, when the liquid material in the container is pressurized by the pressurizing mechanism, all of the liquid material in the container is discharged toward the article. Here, since the quantitative filling device quantitatively fills the container with the liquid material under atmospheric pressure, the liquid material is accurately quantitatively filled into the container. Therefore, the liquid substance can be accurately and quantitatively discharged to the article placed in the reduced pressure atmosphere, and the contact between the liquid substance and air, the mixing of air into the liquid substance discharged to the article, and the like can be suppressed. it can. Further, since the nozzle is a self-sealing type, it is not necessary to provide a valve between the nozzle and the container, and it is not necessary to perform an opening / closing operation of the valve.

It is explanatory drawing which shows typically the whole structure of the fixed quantity discharge system to which this invention is applied. It is explanatory drawing of the nozzle shown in FIG. It is explanatory drawing which shows operation | movement of the fixed quantity discharge system shown in FIG. It is explanatory drawing which shows operation | movement of the fixed quantity discharge system shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings.

(Overall configuration of the quantitative dispensing system 1)
FIG. 1 is an explanatory diagram schematically showing the overall configuration of a fixed volume dispensing system 1 to which the present invention is applied. As shown in FIG. 1, the quantitative discharge system 1 of the present embodiment includes a chamber 2 in which an article W is disposed, a container 3 disposed outside the chamber 2, and a quantitative filling in which the liquid 3 is quantitatively filled into the container 3. It has the apparatus 4 and the nozzle 30 arrange | positioned toward the articles | goods W inside the chamber 2. As shown in FIG. The article W is held by a holder (not shown) with the opening W1 facing upward, and can be taken into and out of the chamber 2 through an entrance / exit (not shown) formed in the chamber 2. A door (not shown) is provided at the doorway formed in the chamber 2. The chamber 2 is provided with a return pressure valve (not shown) for returning the interior to atmospheric pressure.

  The container 3 and the nozzle 30 communicate with each other. For example, a connection portion 31 between the container 3 and the nozzle 30 is fixed to the upper wall 21 of the chamber 2. Therefore, the nozzle 30 is disposed downward. A plurality of articles W are arranged in the chamber 2, and a plurality of pairs of containers 3 and nozzles 30 are provided so as to correspond to each of the plurality of articles W. The nozzle 30 is a self-sealing type, as will be described later with reference to FIG. The fixed amount filling device 4 includes, for example, a tank 41 in which the liquid L is stored and a dispenser 42 connected to the tank 41.

  The quantitative discharge system 1 has a decompression pump 5 that decompresses the inside of the chamber 2, and the decompression pump 5 is connected to the side wall 22 of the chamber 2 via a pipe 52. A valve 53 is provided in the middle of the pipe 52.

  The quantitative discharge system 1 includes a pressurizing mechanism 6 that pressurizes the liquid material L in the container 3 and discharges the liquid material L from the nozzle 30 toward the article W. In this embodiment, the quantitative discharge system 1 has a cover 7 that covers the space in which the container 3 is disposed from above, and the pressurizing mechanism 6 increases the pressure in the cover 7 that covers the container 3. The liquid L in the container 3 is pressurized. For example, the pressurizing mechanism 6 has a nitrogen gas cylinder 60 provided with a pressure regulating valve 61, and the nitrogen gas cylinder 60 is connected to the side wall 72 of the cover 7 via a pipe 62. A valve 63 is provided in the middle of the pipe 62.

  The inside of the cover 7 and the inside of the chamber 2 communicate with each other via a communication pipe 82, and a valve 83 is provided at an intermediate position of the communication pipe 82. In this embodiment, the communication pipe 82 is connected to the side wall 73 of the cover 7 and the side wall 23 of the chamber 2. The cover 7 is provided with a return pressure valve (not shown) for returning the inside of the cover 7 to atmospheric pressure.

  In this embodiment, the cover 7 is provided with a cover driving device (not shown). The cover driving device includes a closed state in which the cover 7 covers the upper side of the container 3 and an open state in which the upper side of the container 3 is opened. To drive. For this reason, at least a part of the communication pipe 82 and the pipe 62 is made of a flexible hose or the like. Further, a seal member 75 is provided at the end of the cover 7 to maintain airtightness when contacting the upper wall 21 of the chamber 2.

(Configuration example of article W)
In this embodiment, the article W is, for example, a case for a lithium ion battery, an electric double layer capacitor, or an electrolytic capacitor. Inside the article W (case), a liquid L is used for a lithium ion battery, A driving electrolyte solution for a double layer capacitor or an electrolytic capacitor is filled. Therefore, if an element for a lithium ion battery, an electric double layer capacitor or an electrolytic capacitor is accommodated in the article W (case), a liquid L (driving electrolyte) is placed inside the article W (case). Once filled, the element is impregnated with the driving electrolyte. At that time, if air is present inside the article W (case), the impregnation of the liquid material L into the element is lowered, and the reliability of the lithium ion battery, the electric double layer capacitor or the electrolytic capacitor is lowered. To do. For this reason, in this embodiment, the liquid material L is filled into the article W in a reduced-pressure atmosphere.

(Configuration of nozzle 30)
FIG. 2 is an explanatory diagram of the nozzle 30 shown in FIG. 1, with the nozzle hole 35 being closed on the right side in FIG. 2, and the nozzle hole 35 being open on the left side in FIG. Yes. As shown in FIG. 2, the nozzle 30 has a nozzle tube 33 in which the nozzle hole 35 opens at the side surface 330, and a sealing rubber tube 36 mounted around the nozzle tube 33 so as to close the nozzle hole 35. is doing. The tip 334 of the nozzle tube 33 is closed. The nozzle tube 33 is formed with an annular convex portion 331 for preventing the rubber tube 36 from coming off, a connecting portion 332 for connecting to the container 3, a flange portion 333 for fixing to the upper wall 21 of the chamber 2, and the like. ing. The rubber tube 36 is mounted around the nozzle tube 33 so as to cover the convex portion 331, and the distal end portion 361 of the rubber tube 36 protrudes from the distal end 334 of the nozzle tube 33.

  In the nozzle 30 configured as described above, when the pressure from the pressurizing mechanism 6 is not applied to the liquid material L in the container 3, the rubber tube 36 is formed regardless of whether or not the inside of the chamber 2 is in a reduced pressure state. The external pressure that closes the nozzle hole 35 is higher than the internal pressure of the nozzle 30. Therefore, as shown on the right side in FIG. 2, the nozzle hole 35 is closed by the rubber tube 36. In such a closed state, the tip 361 of the rubber tube 36 is crushed. Accordingly, the liquid L filled in the container 3 is not discharged from the nozzle hole 35.

  On the other hand, when the pressure from the pressurizing mechanism 6 is applied to the liquid material L in the container 3, the internal pressure of the nozzle 30 is a rubber tube regardless of whether or not the inside of the chamber 2 is in a reduced pressure state. 36 is higher than the external pressure blocking the nozzle hole 35. Accordingly, as shown on the left side in FIG. 2, the rubber tube 36 is deformed by the fluid pressure from the nozzle hole 35, and an open state is created in which a gap is left between the rubber tube 36 and the side surface 330 of the nozzle tube 33. . Further, the tip 361 of the rubber tube 36 is opened. Accordingly, the liquid L filled in the container 3 is discharged from the nozzle hole 35 and discharged through the rubber tube 36.

  In this way, the nozzle 30 is configured with a self-sealing valve that automatically opens and closes the nozzle hole 35 due to a pressure difference between the inside and the outside.

(Quantitative discharge operation)
The operation of the metered discharge system 1 will be described with reference to FIG. 1, FIG. 2, FIG. 3, and FIG. FIG. 3 and FIG. 4 are explanatory diagrams showing the operation of the quantitative discharge system 1 shown in FIG. Each operation described below is automatically performed under the command of the control unit of the quantitative discharge system 1.

  First, in step ST1 shown in FIG. 3, the cover 7 is in an open state in which the upper portion of the container 3 is opened. In this state, the valve 53 is in the closed state, but the valve 83 is in the open state, so that the interior of the chamber 2 communicates with the atmosphere via the communication pipe 82 and is at atmospheric pressure P0. Next, in step ST2 shown in FIG. 3, the liquid material L is quantitatively filled into the container 3 by the dispenser 42 of the quantitative filling device 4 under atmospheric pressure.

  Next, in step ST3 shown in FIG. 3, the cover 7 is closed so as to cover the top of the container 3. At this time, the inside of the chamber 2 and the inside of the cover 7 are at the atmospheric pressure P0. Next, in step ST4 shown in FIG. 3, while the valve 63 is closed, the valves 53 and 83 are opened, and the pressure inside the chamber 2 is reduced to the pressure P1 by the pressure reducing pump 5. As a result, the inside of the cover 7 is also depressurized to the pressure P1.

Next, in step ST5 shown in FIG. 4, while the valve 83 is closed, the valves 53 and 63 are opened, and the pressure inside the chamber 2 is reduced to the pressure P1 by the vacuum pump 5,
The inside of the cover 7 is increased to the pressure P2 by the pressurizing mechanism 6. As a result, the liquid L is pressurized. Accordingly, in step ST6 shown in FIG. 4, the nozzle 30 is in the open state described with reference to FIG. 2, so that the liquid material L is quantitatively discharged toward the article W.

  Next, in step ST7 shown in FIG. 4, while the valves 53, 63, 83 are closed, the return pressure valves (not shown) of the chamber 2 and the cover 7 are opened, and the inside of the chamber 2 and the cover 7 are opened. Is returned to atmospheric pressure P0. Then, the return pressure valve is returned to the closed state.

  Next, in step ST <b> 8 shown in FIG. 4, the cover 7 is returned to the open state in which the upper side of the container 3 is opened, and the article W from which the liquid L has been discharged is taken out from the chamber 2. After an appropriate time, it returns to process ST1 shown in FIG. 3, and repeats each process mentioned above.

(Main effects of this form)
As described above, in the quantitative discharge system 1 of the present embodiment, the container 3 is disposed outside the chamber 2 in which the article W is disposed, and the nozzle 30 disposed toward the article W in the chamber 2 is This is a self-sealing type in which the nozzle hole 35 is automatically opened and closed by the pressure difference between the inside and the outside. Accordingly, the liquid substance L is filled from the nozzle 30 until the liquid material L is quantitatively filled into the container 3 by the constant-quantity filling device 4 and the inside of the chamber 2 is depressurized by the pressure reducing pump 5 and then pressurized by the pressure mechanism 6. It is not discharged toward When the liquid material L in the container 3 is pressurized by the pressurizing mechanism 6, all of the liquid material L in the container 3 is discharged toward the article W. Here, since the quantitative filling device 4 quantitatively fills the container 3 with the liquid substance L under atmospheric pressure, the container 3 is quantitatively filled with the liquid substance L with high accuracy. Therefore, according to the present embodiment, the liquid substance L can be accurately and quantitatively discharged to the article W arranged in the reduced-pressure atmosphere, and the liquid substance L can be contacted with the liquid substance L and air or the liquid substance L discharged to the article W. It is possible to suppress the entry of air into the water. Further, since the nozzle 30 is a self-sealing type, it is not necessary to provide a valve between the nozzle 30 and the container, and it is not necessary to perform an opening / closing operation of the valve.

  Moreover, the fixed quantity discharge system 1 of this form has the cover 7 which covers the space where the container 3 is arranged, and the pressurizing mechanism 6 pressurizes the liquid L in the container 3 by increasing the pressure in the cover 7. . For this reason, unlike the mechanical pressurization mechanism, the liquid L in the container 3 can be pressurized with a simple configuration.

  Moreover, since the fixed-quantity discharge system 1 of this form has the communicating pipe 82 connected to the inside of the chamber 2 and the inside of the cover 7, and the valve | bulb 83 provided in the communicating pipe 82, the pressure reduction pump 5 is provided. When the pressure in the chamber 2 is reduced, the valve 83 is opened and the inside of the cover 7 is also in a reduced pressure state. Accordingly, since the inside of the cover 7 can be in a reduced pressure state until the discharge of the liquid material L to the article W is started, contact between the liquid material L and air can be suppressed.

  Further, the nozzle 30 includes a nozzle tube 33 in which the nozzle hole 35 opens at the side surface 330 and a sealing rubber tube 36 attached to the nozzle tube 33 so as to close the nozzle hole 35. With the configuration, the self-sealing nozzle 30 can be configured.

[Other embodiments]
In the above embodiment, the pressurizing mechanism 6 pressurizes the liquid L with nitrogen gas, but may pressurize the liquid L with dry air. In such a configuration, the liquid L can be prevented from absorbing moisture.

  In the above embodiment, the pressurizing mechanism 6 pressurizes the liquid material L with a gas such as nitrogen gas, but may pressurize the liquid material L with a cylinder that slides inside the container 3.

  L ... Liquid material, W ... Article, 1 ... Quantitative discharge system, 2 ... Chamber, 3 ... Container, 4 ... Quantitative filling device, 5 ... Pressure pump, 6 ... Pressure mechanism, 7 ... Cover, 30 ... Nozzle, 33 ... Nozzle tube, 35 ... nozzle hole, 36 ... rubber tube, 41 ... tank, 42 ... dispenser, 60 ... nitrogen gas cylinder, 61 ... pressure regulating valve, 82 ... communication tube, 330 ... side

Claims (6)

A chamber in which articles are placed;
A container disposed outside the chamber;
A quantitative filling device for quantitatively filling the container with a liquid material;
A self-sealing type nozzle that is disposed toward the article inside the chamber in communication with the container and that automatically opens and closes a nozzle hole due to a pressure difference between the inside and the outside;
A vacuum pump for reducing the pressure in the chamber;
Have
A pressure mechanism that pressurizes the liquid material in the container and discharges the liquid material from the nozzle toward the article in a state where the inside of the chamber is decompressed by the decompression pump;
A quantitative discharge system characterized by comprising: A cover covering the space in which the container is disposed;
The quantitative discharge system according to claim 1, wherein the pressurizing mechanism pressurizes the liquid material in the container by increasing a pressure in the cover. A communication pipe communicating with the inside of the chamber and the inside of the cover;
A valve provided in the communication pipe;
When the decompression pump decompresses the inside of the chamber, the valve is opened and the inside of the cover is also decompressed,
The quantitative discharge system according to claim 2, wherein the valve is closed when the pressurizing mechanism pressurizes the inside of the cover.   4. The nozzle according to claim 1, wherein the nozzle includes a nozzle tube having the nozzle hole opened on a side surface, and a sealing rubber tube attached to the nozzle tube so as to close the nozzle hole. The fixed-quantity discharge system given in any 1 paragraph. A plurality of the articles are arranged in the chamber,
The quantitative discharge system according to claim 1, wherein the container and the nozzle are provided for each of the plurality of articles. The article is a case for a battery, an electric double layer capacitor, or an electrolytic capacitor,
6. The quantitative discharge system according to claim 1, wherein the liquid material is a driving electrolyte solution for a battery, an electric double layer capacitor, or an electrolytic capacitor.

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