KR20120040670A - Application apparatus and supply method for viscous fluid - Google Patents

Abstract

PURPOSE: A coating apparatus and a method for supplying viscous fluid are provided to stabilize the amount of viscous fluid discharged from a coating part by conveying compressed viscous fluid to the coating part. CONSTITUTION: A coating apparatus includes a coating part and a controlling part(34). The controlling part controls the supplying amount of viscous fluid supplied to the coating part. The controlling part includes an introducing port, a discharging port, a first undercurrent chamber(340), a compressing chamber(341), a second undercurrent chamber(342), an introducing amount controlling member(346), and a discharging amount controlling member(347). The introducing port introduces viscous fluid into the controlling part. The viscous fluid introduces into the first undercurrent chamber through the introducing port. The compressing chamber is in connection with the first undercurrent chamber.

Description

APPLICATION APPARATUS AND SUPPLY METHOD FOR VISCOUS FLUID}

The present invention relates to an application apparatus and a supply method of a viscous fluid.

Patent Literature 1 discloses a coating apparatus including a valve for applying liquid such as a synthetic resin liquid, a coating material, and the like to a coating object at predetermined intervals.

Japanese Patent Application Laid-Open No. 2001-38276

However, in the conventional coating device described above, when the viscous fluid such as a slurry-like electrode mixture kneaded with the electrode material and the solvent is attempted to be applied, the viscosity of the valve opens and closes the timing of the viscous fluid discharge from the slit die. There existed a problem that it shifted and the flow volume of the viscous fluid discharged from a slit die at the start of application | coating is not stabilized.

The present invention has been made in view of the above problems, and an object thereof is to stabilize the flow rate of the viscous fluid discharged from the slit die at the start of the application even when the viscous fluid is applied to the application target.

The present invention is a coating apparatus including a coating unit for applying a viscous fluid to an application object and a control unit for controlling the supply amount of the viscous fluid supplied to the coating unit. The control unit includes an introduction port for introducing the viscous fluid into the control unit, a discharge port for discharging the viscous fluid introduced into the control unit from the introduction port to the outside, and a viscous fluid introduced into the introduction port. The first storage chamber, the pressurizing chamber in communication with the first storage chamber, the second storage chamber in communication with the pressurizing chamber and the discharge port, are disposed in the first storage chamber so as to be slidable, and by opening and closing the inlet port by a sliding movement. An introduction amount control member which controls the introduction amount of the viscous fluid introduced into the first storage chamber and introduces the viscous fluid into the pressure chamber by the sliding movement operation and pressurizes the inside of the pressure chamber, and can slide in the second storage chamber. The viscous fluid pressurized in the pressurizing chamber is introduced into the second storage chamber by a sliding movement, and the sliding movement is It is characterized by having an emission control member that controls the discharge amount of the viscous fluid is discharged to the outside from the second reservoir chamber by opening and closing the discharge port.

The present invention also provides an introduction port, a first storage chamber communicated with the introduction port, an introduction amount control member disposed in the first storage chamber so as to be slidable, and an opening and closing control member for opening and closing the introduction port by sliding the inside of the first storage chamber. And a pressurizing chamber communicating with the first storage chamber, a second storage chamber communicating with the pressurizing chamber, a discharge port communicating with the second storage chamber, and slidably disposed in the second storage chamber, It is a supply method which supplies a viscous fluid to an application part via the flow control valve provided with the discharge control member which opens and closes a discharge port by sliding. The supplying method includes a step of sliding the introduction amount control member in the direction in which the introduction port is opened to introduce a viscous fluid into the first storage chamber, and a introduction amount control member in the direction in which the introduction port is closed, thereby sliding the first introduction amount. Introducing the viscous fluid in the storage chamber into the pressurizing chamber, sealing the pressurizing chamber by the introduction amount controlling member and the discharge controlling member to pressurize the viscous fluid in the pressurizing chamber, and discharging the controlling member in the direction in which the discharge port is opened. And sliding to introduce a viscous fluid pressurized in the pressure chamber into the second storage chamber, and discharge the viscous fluid from the discharge port and supply it to the coating unit.

According to the present invention, the viscous fluid introduced into the controller can be discharged after being once pressurized in the pressure chamber by the opening / closing operation (sliding movement) of both the introduction amount control valve and the discharge control valve. Thereby, since the viscous fluid pressurized in the pressurizing chamber can be fed to the applicator, the flow rate of the viscous fluid discharged from the applicator can be stabilized from the start of coating.

1 is a schematic view of a lithium ion secondary battery.
2 is a schematic configuration diagram of an electrode manufacturing apparatus according to a first embodiment of the present invention.
3 is a cross-sectional view showing details of an intermittent supply valve according to a first embodiment of the present invention.
4 is a time chart showing the opening and closing timing of the intermittent supply valve according to the first embodiment of the present invention.
Fig. 5 is a sectional view of the slit die according to the second embodiment of the present invention with the intermittent supply valve provided therein.
6 illustrates a problem in an application step;

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings.

(1st embodiment)

1 is a schematic diagram of a lithium ion secondary battery 1. FIG. 1A is a perspective view of the lithium ion secondary battery 1, and FIG. 1B is a sectional view taken along line B-B in FIG.

As shown in FIGS. 1A and 1B, the lithium ion secondary battery 1 includes a power storage element 2 and an exterior case 3 accommodating the power storage element 2. Equipped.

The electrical storage element 2 is comprised as a laminated body which laminated | stacked the positive electrode 4, the separator 5 as an electrolyte layer, and the negative electrode 6 one by one. The positive electrode 4 has the positive electrode layer 4b on both sides of the plate-shaped positive electrode current collector 4a, and the negative electrode 6 has the negative electrode layer 6b on both sides of the plate-shaped negative electrode current collector 6a. have. Moreover, about the positive electrode 4 arrange | positioned at the outermost layer of the electrical storage element 2, the positive electrode layer 4b is formed only in the single side | surface of the positive electrode electrical power collector 4a.

Adjacent positive electrode 4, separator 5, and negative electrode 6 constitute one unit cell 7, and the lithium ion battery 1 electrically parallels a plurality of stacked unit cells 7, respectively. It is configured by connecting.

The exterior case 3 consists of the sheet | seat material of the polymer-metal composite laminated film which coat | covered metals, such as aluminum, with insulators, such as a polypropylene film. The outer case 3 is bonded to the outer peripheral part of the case by heat fusion in a state where the power storage element 2 is stored. The outer case 3 is provided with a positive electrode tab 8 and a negative electrode tab 9 as external terminals in order to take out electric power from the power storage element 2 to the outside.

One end of the positive electrode tab 8 is disposed outside the exterior case 3, and the other end of the positive electrode tab 8 is connected to the collection portion of each positive electrode current collector 4 a inside the exterior case 3. One end of the negative electrode tab 9 is disposed outside the exterior case 3, and the other end of the negative electrode tab 9 is connected to the collection portion of each negative electrode current collector 6a inside the exterior case 3.

Next, the general manufacturing method of an electrode (positive electrode 4 or negative electrode 6) is demonstrated easily.

Generally, an electrode applies the slurry mixture which mixed the electrode material and the solvent to the collector (positive electrode collector 4a or negative electrode collector 6a) at predetermined intervals, after the application | coating process of an electrode mixture It manufactures through the drying process which volatilizes a solvent, and forms the electrode layer (positive electrode layer 4b or negative electrode layer 6b) of 100% of solid content. In the application step, the electrode mixture is applied to the current collector at predetermined intervals by opening and closing the intermittent supply valve provided in the supply path of the electrode mixture.

However, when manufacturing an electrode in this way, it turned out that there exist the following problems in an application | coating process. FIG. 6 is a diagram illustrating a problem in an application step when an intermittent supply valve according to a conventional example different from that of the present embodiment is used. In FIG. 6, the solid line shows the opening / closing timing of the intermittent supply valve according to the prior art, and the broken line shows the discharge amount of the electrode kneaded material discharged from the intermittent supply valve according to the opening and closing of the intermittent supply valve according to the prior art.

As shown in FIG. 6, since the electrode kneaded material is a slurry-like viscous fluid, it takes time until the coating amount is constant after opening the intermittent supply valve, and the electrode kneaded material is applied for a while even after closing the intermittent supply valve. The state continues. That is, it turned out that there is a problem that the electrode kneaded material is not discharged at the opening and closing timing of the intermittent supply valve, and the discharge amount of the electrode kneaded material at the start of coating and at the end of coating is not stable.

Therefore, in this embodiment, the discharge amount of the electrode mixture at the start of coating and at the time of coating is stabilized by pressurizing the electrode mixture at once inside the intermittent supply valve. Hereinafter, the electrode manufacturing apparatus using the intermittent supply valve which concerns on this embodiment is demonstrated.

FIG. 2: is a schematic block diagram of the electrode manufacturing apparatus 100 using the intermittent supply valve which concerns on this embodiment used at the time of electrode manufacture of the lithium ion battery 1. As shown in FIG.

The electrode manufacturing apparatus 100 includes the conveying apparatus 10, the kneading apparatus 20, the coating apparatus 30, and the drying apparatus 40.

The electrode manufacturing apparatus 100 apply | coats the electrode kneaded material 21 knead | mixed in the kneading apparatus 20 by the coating device 30 to the surface of the metal foil 14 conveyed by the conveying apparatus 10, It is an apparatus which manufactures an electrode by drying the electrode kneaded material 21 with the drying apparatus 40. FIG. As needed, you may press an electrode with a press apparatus etc. after drying, and adjust thickness etc. as needed.

Hereinafter, each apparatus which comprises the electrode manufacturing apparatus 100 is demonstrated in detail.

The conveying apparatus 10 is equipped with the acquisition roll 11, the winding roll 12, and the support roll 13. As shown in FIG. The conveying apparatus 10 acquires the thin film-shaped metal foil 14 (thickness 10 [micrometer]-40 [micrometer]) which becomes the positive electrode electrical power collector 4a or the negative electrode electrical power collector 6a by a roll-to-roll system. It conveys to the winding roll 12 from (11).

In this embodiment, when manufacturing the positive electrode 4, aluminum foil is used as the metal foil 14 used as the positive electrode electrical power collector 4a, and when manufacturing the negative electrode 6, it becomes the negative electrode electrical power collector 6a. Although copper foil is used as the metal foil 14, it is not limited to this.

The metal foil 14 is wound around the printing roll 11. The take-up roll 11 is equipped with the braking mechanism 15, The rotation of the take-up roll 11 is appropriately regulated by this braking mechanism 15, and the metal foil 14 is given predetermined tension.

The winding roll 12 is rotationally driven by the drive motor 16 and winds up the metal foil 14 taken in from the take-up roll 11.

The support roll 13 is provided in multiple numbers in the metal foil conveyance path between the printing roll 11 and the winding roll 12, and hold | maintains the lower surface of the metal foil 14 in conveyance.

The kneading apparatus 20 is a biaxial kneading machine, and is an apparatus for producing the slurry-like electrode kneading material 21 by uniformly dispersing the electrode material in a solvent. The kneading apparatus 20 is not limited to a biaxial kneading machine, For example, you may use a planetary mixer or kneader.

The electrode kneaded material 21 includes a positive electrode kneaded product produced when the positive electrode 4 is produced and a negative electrode kneaded product produced when the negative electrode 6 is produced.

When manufacturing a positive electrode kneaded material, the positive electrode active material, an electroconductive adjuvant, and a binder (binder) as an electrode material are thrown into the kneading apparatus 20, and these are disperse | distributed uniformly in a solvent. When manufacturing a negative electrode kneaded material, the negative electrode active material, an electroconductive adjuvant, and a binder as an electrode material are thrown into the kneading apparatus 20, and these are disperse | distributed uniformly in a solvent.

A positive electrode active material is a substance which occludes and releases lithium ions, such as a lithium metal oxide. In this embodiment, lithium manganate is used as a positive electrode active material.

The negative electrode active material is a substance which releases and occludes lithium ions such as lithium metal oxide, hard carbon and graphite. In this embodiment, hard carbon is used as a negative electrode active material.

A conductive support agent is a substance which raises electroconductivity, such as a carbon material (carbon powder or carbon fiber). As the carbon powder, various carbon blacks such as acetylene black, furnace black and Ketjen black, and graphite powder can be used. In this embodiment, both the case where a positive electrode kneaded material is manufactured and a negative electrode kneaded material are manufactured, carbon black is used as a conductive support agent.

A binder is a substance which binds active material fine particles. In this embodiment, polyvinylidene fluoride (PVDF) is used as a binder in both the case of manufacturing a positive electrode kneaded material and the case of manufacturing a negative electrode kneaded material, However, it is not limited to this.

A solvent is a liquid which melt | dissolves an electrode material. In the present embodiment, N-methylpyrrolidone (NMP) is used as the solvent in both the case of producing the positive electrode kneaded product and the negative electrode kneaded material, but the present invention is not limited thereto.

The coating device 30 is a device for applying the electrode kneaded material 21 produced by the kneading device 20 to the surface of the metal foil 14, and is provided with a supply pipe 31, a mono pump 32, and a filter ( 33, an intermittent supply valve 34, a slit die 35, a recovery pipe 36, and a recovery valve 37.

The supply piping 31 is piping in which one end part is connected below the kneading apparatus 20, and the other end part is connected to the slit die 35.

The mono pump 32 is provided in the supply pipe 31, and supplies the electrode kneaded material 21 produced by the kneading apparatus 20 to the intermittent supply valve 34 through the supply pipe 31.

The filter 33 is provided in the supply pipe 31 downstream of the mono pump 32, and removes contaminants such as garbage, dust, dust and the like mixed in the electrode kneaded material 21.

The intermittent supply valve 34 is a valve that is provided in the supply pipe 31 near the slit die 35 and is opened and closed at predetermined intervals. The intermittent supply valve 34 pressurizes the electrode kneaded material fed from the mono pump to a predetermined pressure, and pressurizes the pressurized electrode kneaded material to the slit die 35. Thereby, the discharge amount of the initial electrode kneaded material discharged from the slit die 35 can be stabilized. The detailed structure of the intermittent supply valve 34 is described in detail with reference to FIG.

The slit die 35 extrudes the electrode kneaded material 21, which has been pressurized from the intermittent supply valve 34 at a predetermined interval, from the slit 351 formed at the distal end portion to the surface of the metal foil 14 during transportation. Apply. The slit die 35 extrudes and apply | coats the electrode kneaded material 21 at right angles to the conveyance direction of the metal foil 14.

The recovery pipe 36 is a pipe whose one end is connected to the supply pipe 31 between the filter 33 and the intermittent supply valve 34, and the other end thereof is connected above the kneading apparatus 20.

The recovery valve 37 is provided at the connection portion between the supply pipe 31 and the recovery pipe 36. When the recovery valve 37 is open, the electrode kneaded material 21 fed from the mono pump 32 is returned to the kneading apparatus 20 through the recovery pipe 36. On the other hand, when the recovery valve 37 is closed, the electrode kneaded material 21 fed from the mono pump 32 is supplied to the intermittent supply valve 34 through the supply pipe 31.

The drying apparatus 40 is a hot air drying furnace, for example, and is installed in a metal foil conveyance path | route. The drying apparatus 40 injects hot air into the electrode mixture 21 while maintaining the temperature in the apparatus at a predetermined temperature, and volatilizes the solvent contained in the electrode mixture 21 to form an electrode layer having a solid content of 100%.

3 is a cross-sectional view showing details of the intermittent supply valve 34.

The intermittent supply valve 34 includes a first storage chamber 340, a pressure chamber 341, a second storage chamber 342, a first compressed air supply chamber 343, and a second compressed air supply chamber 344. A cylindrical housing 345 having a partition formed therein, an introduction amount control valve 346 reciprocating the inside of the first storage chamber 340 and the first compressed air supply chamber 343 in the axial direction of the housing 345, and A discharge control valve 347 is provided to reciprocate the interior of the second storage chamber 342 and the second compressed air supply chamber 344 in the axial direction of the housing 345.

Into the first storage chamber 340, an electrode kneaded product that is fed by the mono pump 32 and flows through the supply pipe 31 is introduced and temporarily stored. An introduction port 345a which is opened to the first storage chamber 340 and connected to the supply pipe 31a on the mono pump side in order to introduce the electrode mixture to the first storage chamber 340. Is formed.

The pressurization chamber 341 is formed between the 1st storage chamber 340 and the 2nd storage chamber 342, and is communicated with each. The electrode kneaded material supplied to the first storage chamber 340 is supplied to the pressure chamber 341, pressurized to a predetermined pressure, and then supplied to the second storage chamber 342.

In the second storage chamber 342, the electrode kneaded material pressurized by the pressure chamber 341 and discharged to the slit die 35 is temporarily stored. In order to discharge the electrode mixture from the second storage chamber 342 to the slit die 35, the housing 345 is opened to the second storage chamber 342 and at the same time, the supply pipe 31b on the side of the slit die 35. Discharge port 345b is formed.

The 1st compressed air supply chamber 343 is formed below in the figure of the 1st storage chamber 340. Compressed air for driving the introduction amount control valve 346 is supplied to the first compressed air supply chamber 343. As a supply / discharge port for supplying and discharging compressed air, the housing 345 is provided with a first port 345c and a second port 345d which are opened to the first compressed air supply chamber 343.

The second compressed air supply chamber 344 is formed above in the drawing of the second storage chamber 342. Compressed air for driving the discharge control valve 347 is supplied to the second compressed air supply chamber 344. As a supply / discharge port for supplying and discharging compressed air, the housing 345 is provided with a third port 345e and a fourth port 345f which are opened to the second compressed air supply chamber 344.

The introduction amount control valve 346 includes a thin land portion 346a disposed in the first compressed air supply chamber 343, a thick land portion 346b disposed in the first storage chamber 340, and a thick land portion 346b. ), A projection 346c protruding upward from the figure, and a shaft 346d connecting the thin land portion 346a and the thick land portion 346b.

The thin land portion 346a has an outer diameter that substantially matches the inner diameter of the first compressed air supply chamber 343. When the compressed air is supplied from the first port 345c to the first compressed air supply chamber 343 from the first port 345c, the thin land portion 346a is pressed downward in the drawing by the compressed air, whereby the introduction amount control valve ( 346 moves downward in the figure as a whole. On the other hand, when compressed air is supplied to the 1st compressed air supply chamber 343 from the 2nd port 345d, the thin land part 346a is compressed and moved upwards in the figure by compressed air, and thereby, the amount of control of the introduction The valve 346 moves upward in the figure as a whole.

The thick land portion 346b has an outer diameter substantially coincident with the inner diameter of the first storage chamber 340, and reciprocates the inside of the first storage chamber 340 in the axial direction of the housing 345, thereby introducing an introduction port ( 345a) is opened and closed. Specifically, when compressed air is supplied from the first port 345c to the first compressed air supply chamber 343, the introduction port 345a is opened in contact with the bottom surface of the first storage chamber 340. On the other hand, when compressed air is supplied to the 1st compressed air supply chamber 343 from the 2nd port 345d, it contacts the upper surface of the 1st storage chamber 340, closes the inlet port 345a, and at the same time, the 1st storage The electrode kneaded material in the chamber 340 is introduced into the pressure chamber 341.

The protruding portion 346c has an outer diameter that substantially matches the inner diameter of the first communication passage 348 communicating the first storage chamber 340 and the pressure chamber 341. When the compressed air is supplied from the second port 345d to the first compressed air supply chamber 343, the protrusion 347c closes the first communication path 348 and press-fits the electrode mixture to the pressure chamber 341. do.

The discharge control valve 347 includes a thin land portion 347a disposed in the second compressed air supply chamber 344, a thick land portion 347b disposed in the second storage chamber 342, and a thick land portion 347b. ) And a shaft 347d for connecting the projecting portion 347c projecting downward from the figure, and the thin land portion 347a and the thick land portion 347b.

The thin land portion 347a has an outer diameter that substantially matches the inner diameter of the second compressed air supply chamber 344. When the compressed air is supplied from the third port 345e to the second compressed air supply chamber 344, the thin land portion 347a is compressed and moved upward in the drawing by the compressed air, whereby the discharge control valve ( 347 generally moves upward in the figure. On the other hand, when compressed air is supplied to the 2nd compressed air supply chamber 344 from the 4th port 345f, it is compressed and moved downward in the figure by compressed air, and, thereby, the discharge control valve 347 as a whole in the figure Move down.

The thick land portion 347b has an outer diameter substantially coinciding with the inner diameter of the second storage chamber 342, and the inside of the second storage chamber 342 is reciprocated in the axial direction of the housing 345, thereby discharging the discharge port ( 345b) is opened and closed. Specifically, when compressed air is supplied from the third port 345e to the first compressed air supply chamber 343, the discharge port 345b is opened in contact with the upper surface of the second storage chamber 342. On the other hand, when compressed air is supplied to the 2nd compressed air supply chamber 344 from the 4th port 345f, it contacts the bottom face of the 2nd storage chamber 342, closes the discharge port 345b, and has 2nd storage The remaining electrode kneaded material in the chamber 342 is returned to the pressure chamber 341.

The protruding portion 347c has an outer diameter that substantially matches the inner diameter of the second communication path 349 that communicates the pressure chamber 341 and the second storage chamber 342. When the compressed air is supplied from the fourth port 345f to the second compressed air supply chamber 344, the protrusion 347c closes the second communication path 349 and press-fits the electrode mixture to the pressure chamber 341. do.

Next, with reference to FIG. 4, the operation | movement and opening / closing timing of the intermittent supply valve 34 which concern on this embodiment are demonstrated.

4 is a time chart showing the opening and closing timing of the intermittent supply valve 34 according to the present embodiment.

As shown to Fig.4 (a) and FIG.4 (b), at time t0, the introduction port 345a and the discharge port 345b are introduced by the introduction amount control valve 346 and the discharge control valve 347. It is closed.

At time t1, when compressed air is supplied from the first port 345c to the first compressed air supply chamber 343, the introduction amount control valve 346 moves downward in the figure. Thereby, as shown to Fig.4 (a), the introduction port 345a which was closed by the thick land part 347b of the introduction amount control valve 346 is opened, and an electrode is opened to the 1st storage chamber 340. FIG. Kneaded material is introduced.

At time t2, when compressed air is supplied from the second port 345d to the first compressed air supply chamber 343, the introduction amount control valve 346 moves upward in the figure. As a result, the electrode kneaded material in the first storage chamber 340 is fed into the pressure chamber 341 by the thick land portion 347b of the introduction amount control valve 346, and as shown in FIG. 4A. The introduction port 345a is closed to stop the introduction of the electrode mixture to the first storage chamber 340.

Here, from the time t2 to the time t3, as shown in FIG.4 (a) and FIG.4 (b), the introduction port 345a and the discharge port 345b are closed. That is, the first communication path 348 is closed by the protrusion 347c of the introduction amount control valve 346, and the second communication path 349 is blocked by the protrusion 347c of the discharge control valve 347. During this time, the electrode mixture is pressed to a predetermined pressure in the pressure chamber 341.

At time t3, when compressed air is supplied from the third port 345e to the second compressed air supply chamber 344, the discharge control valve 347 moves upward in the figure. Thereby, as shown in FIG.4 (b), the discharge port 345b which was closed by the thick land part 347b of the discharge control valve 347 is open | released, and the predetermined pressure in the pressurizing chamber 341 is carried out. The electrode kneaded material pressurized to is squeezed from the second storage chamber 342 to the slit die 35 through the discharge port 345b.

As described above, according to the present embodiment, the electrode kneaded material pressurized to the predetermined pressure in the pressure chamber 341 can be fed to the slit die 35, so that the discharge amount of the initial electrode kneaded material discharged from the slit die 35 is discharged. Can stabilize.

At time t4, when compressed air is supplied from the fourth port 345f to the second compressed air supply chamber 344, the discharge control valve 347 moves downward in the figure. As a result, the electrode kneaded material in the second storage chamber 342 is returned to the pressure chamber 341 by the thick land portion 347b of the discharge control valve 347, and as shown in FIG. 4B. The discharge port 345b is closed to stop the feeding of the electrode mixture to the slit die 35.

Here, when the discharge port 345b is closed, the inside of the supply pipe 31 between the discharge port 345b and the electrode mixture to be fed to the slit die 35 becomes negative pressure, so that the electrode mixture is discharged to the discharge port ( 345b) side. Therefore, according to this embodiment, the discharge amount at the end of application | coating of the electrode kneaded material to the electrical power collector by the slit die 35 can be stabilized.

According to the present embodiment described above, the electrode kneaded material introduced into the intermittent supply valve 34 is once pressurized by the opening / closing operation (sliding operation) of both the introduction amount control valve 346 and the discharge control valve 347. After pressurizing at 341, it can discharge. Thereby, since the electrode kneaded material pressurized in the pressurizing chamber 341 can be fed to the slit die 35, the discharge amount of the initial electrode kneaded material discharged from the slit die 35 can be stabilized.

In addition, when the discharge port 345b is closed by the discharge control valve 347, the inside of the supply pipe 31 between the discharge port 345b and the electrode kneaded material which is pressurized to the slit die 35 becomes negative. Thus, the electrode mixture is attracted to the discharge port 345b side. Thereby, the discharge amount at the end of application | coating of the electrode kneaded material to the electrical power collector by the slit die 35 can be stabilized.

In addition, by providing the intermittent supply valve 34 in the supply pipe 31 near the slit die 35, the pressure loss from the intermittent supply valve 34 to the electrode mixture slit die 35 discharged can be reduced. Can be.

(2nd embodiment)

Next, a second embodiment of the present invention will be described. The second embodiment of the present invention differs from the first embodiment in that the slit die 35 and the intermittent supply valve 34 are integrated. Hereinafter, the difference will be described. In addition, in each embodiment shown below, the description which overlaps using the same code | symbol is abbreviate | omitted suitably for the part which functions similarly to embodiment mentioned above.

FIG. 5: is sectional drawing of the slit die 35 which provided the intermittent supply valve 34 which concerns on this embodiment.

As shown in FIG. 5, the 2nd storage chamber 342 and the 2nd compressed air supply chamber 344 are arrange | positioned at the slit 351 side of the slit die 35, and the slit across the pressurizing chamber 341 is interposed. The first storage chamber 340 and the first compressed air supply chamber 343 are disposed on the opposite side of the 351.

By providing the intermittent supply valve 34 inside the slit die 35 in this manner, the same effects as those in the first embodiment can be obtained, and the electrode kneaded material can be discharged directly to the slit 351. The pressure loss of water can be further reduced.

In addition, this invention is not limited to said embodiment, It is clear that various changes can be made within the technical idea range.

31: supply piping (piping)
34: intermittent supply valve (control unit)
35: slit die (coating part)
340: first storage room
341: pressure chamber
342: second storage room
343: first compressed air supply chamber
344: second compressed air supply chamber
345a: introduction port
345b: discharge port
346: introduction amount control valve (introduction amount control member)
346a: thin land portion (first drive member)
346c: protrusion (sealed)
346d: shaft (first shaft)
347: discharge control valve (discharge amount control member)
347a: Thin land portion (second drive member)
347c: protrusion (sealed)
347d: shaft (second shaft)
348: first communication path
349: second communication path

Claims (7)

An application unit for applying a viscous fluid to the application object,
It is an application device provided with a control part which controls the supply amount of the viscous fluid supplied to the said application part,
The control unit,
An introduction port for introducing a viscous fluid into the control unit;
A discharge port for discharging the viscous fluid introduced into the control unit from the introduction port to the outside;
A first storage chamber communicating with the introduction port and introducing a viscous fluid;
A pressurizing chamber in communication with the first storage chamber;
A second storage chamber communicating with the pressurizing chamber and the discharge port;
The amount of viscous fluid introduced into the first storage chamber is controlled by being slidably disposed in the first storage chamber and opening and closing the introduction port by a sliding movement, and the viscous fluid is moved by the sliding movement. An introduction amount control member for introducing into the pressurizing chamber to pressurize the pressurizing chamber;
The viscous fluid pressurized in the pressurizing chamber is introduced into the second storage chamber by a sliding movement, and the opening and closing of the discharge port is performed by the sliding movement. And a discharge control member for controlling the discharge of the viscous fluid discharged to the outside from the second storage chamber. The method of claim 1, wherein the introduction amount control member,
And a sealing part inserted into a first communication path communicating the first storage chamber and the pressure chamber to seal the pressure chamber when the viscous fluid is introduced into the pressure chamber. The said discharge control member of Claim 1 or 2,
And a sealing portion inserted into a second communication path communicating with the pressure chamber and the second storage chamber to seal the pressure chamber until the viscous fluid is introduced into the second storage chamber. The method according to claim 1 or 2, wherein the control valve,
A first compressed air supply chamber and a second compressed air supply chamber to which compressed air is supplied;
Slidably disposed in the first compressed air supply chamber, being connected to the introduction amount control member by a first shaft, and being compressed by the supplied compressed air to slide the inside of the first compressed air supply chamber to control the introduction amount. A first drive member for driving the member,
Slidably disposed in the second compressed air supply chamber, connected to the discharge control member by a second shaft, and compressed by the supplied compressed air, thereby sliding the inside of the second compressed air supply chamber to control the discharge amount. And a second drive member for driving the member. The coating device according to claim 1 or 2, wherein the control valve is provided in the coating unit. The pipe according to claim 1 or 2, wherein one end portion is connected to the application portion and has a pipe through which a viscous fluid flows.
The said control valve is provided in the said piping near the said coating part, The coating apparatus characterized by the above-mentioned. With introduction port,
A first storage chamber communicating with the introduction port, an introduction amount control member disposed in the first storage chamber so as to be slidable, and an opening amount controlling member for opening and closing the introduction port by sliding the inside of the first storage chamber;
A pressurizing chamber in communication with the first storage chamber;
A second storage chamber communicating with the pressurizing chamber;
A discharge port communicating with the second storage chamber,
A viscous fluid which is disposed in the second storage chamber so as to be slidable and supplies a viscous fluid to the applicator through a flow control valve having a discharge control member which opens and closes the discharge port by sliding the inside of the second storage chamber. Supply method of
Sliding the introduction amount control member in a direction in which the introduction port is opened to introduce a viscous fluid into the first storage chamber;
Sliding the introduction amount control member in a direction in which the introduction port is closed to introduce viscous fluid in the first storage chamber into the pressure chamber;
Sealing the pressure chamber by the introduction amount control member and the discharge control member to pressurize the viscous fluid in the pressure chamber;
Sliding the discharge control member in a direction in which the discharge port opens, introducing a viscous fluid pressurized from the pressure chamber into the second storage chamber, and discharging the viscous fluid from the discharge port and supplying it to the applicator. A supply method of a viscous fluid, characterized in that it comprises a.

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