JP2014069108A - Device of manufacturing pigment dispersion composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device of manufacturing a pigment dispersion composition which can efficiently manufacture a high-quality pigment dispersion composition.SOLUTION: A device 1 manufactures a pigment dispersion composition by dispersing pigment in a solvent, and is provided with at least one stirring device 2 having rotating/stirring means 4 which stirs the pigment, solvent and dispersion medium stored in a container 8 by rotation, and a rotation drive device 3 which drives to rotate the rotating/stirring means 4. The rotating/stirring means 4 is provided with a rotation shaft 6 detachably connected to the rotation drive device 3.

Description

  The present invention relates to an apparatus for producing a pigment dispersion composition for producing a pigment dispersion composition by dispersing a pigment in a solvent.

  Conventionally, a pigment dispersion composition is generally produced by dispersing a pigment in a solvent (see, for example, Patent Documents 1, 2, and 3). An apparatus for producing such a pigment dispersion composition generally has a stirrer having a rotating stirrer for rotating a pigment, a solvent and a dispersion medium contained in a container by rotation, and rotationally drives the rotating stirrer. And a rotation driving device. When the pigment dispersion composition is produced by the production apparatus having such a configuration, the rotation shaft is rotated by operating the rotation drive device in a state where the pigment, the solvent and the dispersion medium are contained in the container. Thereby, the pigment is dispersed in the solvent by rotating the rotary stirring means and stirring the pigment, the solvent and the dispersion medium in the container, thereby producing a pigment dispersion composition.

JP 2005-279350 A JP 2006-000751 A JP 2006-007128 A

  In the apparatus for producing a pigment dispersion composition as described above, after the pigment dispersion composition is produced, in order to prevent color mixing or repelling caused by mixing different pigments, resins, etc., a stirring device is used by circulating a solvent or the like. However, it was not possible to stir while washing, and the pigment dispersion composition could not be produced during washing. Accordingly, there has been a problem that the pigment dispersion composition cannot be efficiently produced. Moreover, although the operation | work which removes the used dispersion media or the operation | work which replaces may be performed, since the pigment dispersion composition cannot be manufactured during the operation | work, it was calculated | required to improve manufacturing efficiency.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an apparatus for producing a pigment dispersion composition that can efficiently produce a high-quality pigment dispersion composition.

  An apparatus for producing a pigment dispersion composition according to the present invention has been made to solve the above problems, and is an apparatus for producing a pigment dispersion composition by dispersing a pigment in a solvent, which is accommodated in a container. And at least one stirring device provided with a rotating stirring means for stirring the pigment, the solvent and the dispersion medium by rotation, and a rotation driving device for driving the rotating stirring means to rotate. And a rotary shaft that is detachably connected to the motor.

  According to such a configuration, the pigment dispersion composition can be manufactured by removing the rotating shaft from the rotation driving device and replacing it with a new stirring device. Thereby, a pigment dispersion composition can be manufactured continuously and the manufacturing time of a pigment dispersion composition can be shortened. Moreover, since the manufacturing apparatus can be operated continuously, the stop time of the manufacturing apparatus can be shortened. In addition, since the agitation device can be removed from the rotary drive device, the agitation device can be cleaned, the dispersion medium can be removed or replaced, inspected, and repaired. In parallel with this work, the manufacturing apparatus can be operated with a new stirring device. Also, when removing or replacing the dispersion medium from the container with the stirring device removed, the work can be performed in an environment where it is easy to work. It can be reliably removed or replaced. Therefore, according to the apparatus for producing a pigment dispersion composition as described above, a high-quality pigment composition can be efficiently produced.

  The pigment dispersion composition manufacturing apparatus preferably further includes a support member that supports the stirring device.

  Moreover, it is preferable to further provide a bearing that supports the rotating shaft.

  Moreover, it is preferable to provide a plurality of the stirring devices.

  According to the apparatus for manufacturing a pigment dispersion composition according to the present invention, a high-quality pigment dispersion composition can be efficiently manufactured.

It is a schematic block diagram of the manufacturing apparatus of the pigment dispersion composition which concerns on one Embodiment of this invention. It is a schematic block diagram of the stirring apparatus which concerns on one Embodiment of this invention. It is a schematic block diagram of the stirring apparatus which concerns on other embodiment. It is a schematic block diagram of the stirring apparatus which concerns on other embodiment. It is a schematic block diagram of the support member which concerns on other embodiment. It is a schematic block diagram of the support member which concerns on other embodiment. It is a schematic block diagram of the manufacturing apparatus of the pigment dispersion composition which concerns on other embodiment. It is a schematic block diagram of the manufacturing apparatus of the pigment dispersion composition which concerns on other embodiment. It is a schematic block diagram of the stirring apparatus 2 which concerns on other embodiment. It is a schematic block diagram of the support member which concerns on other embodiment. It is a schematic block diagram of the manufacturing apparatus of the pigment dispersion composition which concerns on other embodiment. It is a schematic block diagram of the manufacturing apparatus of the pigment dispersion composition which concerns on other embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of an apparatus for producing a pigment dispersion composition according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a stirring device. The pigment dispersion composition production apparatus 1 is an apparatus for producing a pigment dispersion composition by dispersing a pigment in a solvent. As shown in FIG. 1, an agitator 2 and a rotary drive device arranged adjacent to each other. 3 is provided. A plurality of stirring devices 2 are preferably prepared for replacement.

As the pigment, a color pigment or an extender pigment can be used, and these are not particularly limited. Examples of the color pigment include inorganic pigments such as titanium dioxide, iron oxide, chromium oxide, lead chromate, and carbon black. Azo lake pigments, insoluble azo pigments, condensed azo pigments, phthalocyanine pigments, indigo pigments, perinone pigments, perylene pigments, dioxazine pigments, quinacridone pigments, isoindolinone pigments, benzimidazolone pigments , Organic pigments such as diketopyrrolopyrrole pigments, metal complex pigments, and the like, and examples of the extender pigment include talc, calcium carbonate, barium sulfate, barium carbonate, calcium carbonate, clay, and silica. It is done. These may be used alone or in combination of two or more. The solvent is not particularly limited, and water or an organic solvent can be used. Examples of the organic solvent include alcohols such as methanol and ethanol, ketones such as methyl ethyl ketone and methyl isobutyl ketone, ethyl acetate and acetic acid. Examples thereof include esters such as isobutyl, aromatic compounds such as toluene and xylene, and mixed solvents thereof. Examples of the dispersion medium include glass beads, steel beads, ceramic beads, and zirconia beads. The particle size of the beads is not particularly limited, but is preferably 0.01 to 2.0 mm.
In order to stabilize and prevent re-aggregation of the dispersed and crushed pigment, it is preferable that the pigment dispersion composition contains a pigment dispersion resin, a pigment dispersant, and / or a pigment derivative together with the above solvent, and contains a pigment dispersion resin. It is particularly preferable to do this. Further, if necessary, known auxiliary additives such as an antifoaming agent, a viscosity adjusting agent, an anti-settling agent, a surface adjusting agent, a curing catalyst, an ultraviolet absorber, a light stabilizer, and a plasticizer can be contained.

  The stirring device 2 includes a container 8 that contains a pigment, a solvent, and a dispersion medium, and a rotating stirring means 4 that stirs the pigment, the solvent, and the dispersion medium in the container 8 by rotation. Is supported by.

  The container 8 includes an inlet 10 for introducing a mixed liquid (pigment paste) of a pigment and a solvent being stirred into the container 8, and an outlet 11 for discharging the mixed liquid out of the container 8. The inlet 10 is formed at the bottom of the container 8, and the outlet 11 is formed at the top of the container 8. The introduction port 10 and the discharge port 11 are connected to a circulation line (not shown), and the mixed liquid discharged from the discharge port 11 passes through the circulation line and is again introduced into the container 8 from the introduction port 10. Has been. Circulation of the mixed liquid can be performed by a pump pressure (not shown). The container 8 also includes a gap separator 14 that separates the dispersion medium from the mixed liquid. The gap separator 14 forms a gap through which the mixed liquid passes while the dispersion medium does not pass, and the dispersed medium can be separated when the mixed liquid in the container 8 passes through the gap separator 14. Further, the liquid mixture that has passed through the gap separator 14 is discharged from the discharge port 11 to the circulation line. In addition, the container 8 includes a partition wall 17 that is vertically divided, and the upper part can be removed from the partition wall 17 when the dispersion medium in the container 8 is replaced or when the inside of the container 8 is washed.

  The rotary stirring means 4 includes a rotating shaft 6 inserted into the container 8 and stirring blades 13 extending radially from the rotating shaft 6. The upper end portion of the rotating shaft 6 protrudes above the container 8 and is detachably attached to the rotation driving device 3. A mechanical seal 15 is disposed around the rotary shaft 6 to prevent the mixed liquid from leaking to the outside. As the mechanical seal 15, a double mechanical seal is used in which two mechanical seals are arranged in opposite directions, and an external injection liquid is injected between the two mechanical seals at a pressure higher than the pressure of the liquid to be sealed. be able to. The lower end portion of the rotating shaft 6 is supported by a bearing 9. The bearing 9 is disposed at the bottom of the container 8 and supports the axial load of the rotary shaft 6. Moreover, as the bearing 9, a rolling bearing or a sliding bearing can be used, and it is preferable to use a sliding bearing from the viewpoint of preventing the shaft shake at the time when the rotating shaft 6 rotates at high speed. Further, the stirring blade 13 protrudes from the rotating shaft 6 to the periphery, and the mixed liquid can be stirred by the rotation of the rotating shaft 6.

  The rotation drive device 3 includes a motor 16 and a connecting portion 7 connected to the motor 16, and the connecting portion 7 rotates by the operation of the motor 16. The rotation of the motor 16 is transmitted to the connecting portion 7 by a gear and a pulley (not shown). In addition, the rotating shaft 6 is connected to the connecting portion 7, and the rotating shaft 6 can be rotated via the connecting portion 7 by the rotation of the motor 16. Moreover, the rotational speed of the rotational drive apparatus 3 can be adjusted suitably, for example, the rotating shaft 6 can be rotated at high speed and high-speed stirring can be performed.

  The connecting portion 7 includes a chuck mechanism that holds the upper end portion of the rotating shaft 6. The chuck mechanism includes an insertion hole 12 for inserting a rotation shaft, and a plurality of claws 18 arranged around the insertion hole 12 and opened and closed in the radial direction of the insertion hole 12. The rotary shaft 6 can be gripped by tightening the rotary shaft 6 inserted into the hole 12 in the radial direction. By this chuck mechanism, the rotating shaft 6 is detachably connected to the connecting portion 7.

  The support member 5 is disposed on the ground so as to be movable, and includes a concave container housing portion 20 for housing the container 8. The bottom of the container 8 is disposed in the container housing portion 20, and the container 8 is supported from below by the support member 5.

  In addition to the above configuration, the pigment dispersion composition manufacturing apparatus 1 may include a cooling device (not shown) for cooling the pigment dispersion composition. This cooling device is configured to cool the container 8 by circulating a cooling medium around the outer wall surface of the container 8 or in the outer wall surface of the container 8, and cool the pigment dispersion composition accommodated in the container 8. Yes. By this cooling device, it is possible to suppress the temperature of the pigment dispersion composition from rising, and it is possible to maintain stable dispersibility. Further, in the case where stirring is performed by reducing the rotation speed of the rotation drive device 3, the cooling device may be omitted.

  When the pigment dispersion composition is manufactured by the pigment dispersion composition manufacturing apparatus 1 having the above-described configuration, the motor 16 of the rotation driving device 3 is operated in a state where the pigment and the solvent are contained in the container 8. Then, the rotating shaft 6 is rotated via the connecting portion 7. Thereby, the rotation stirring means 4 is rotated, and the pigment, the solvent and the dispersion medium in the container 8 are stirred to disperse the pigment in the solvent, thereby producing a pigment dispersion composition. Further, after the pigment dispersion composition is manufactured, the stirring device 2 can be detached from the rotation driving device 3 and a new stirring device 2 can be attached to the rotation driving device 3. More specifically, the rotating shaft 6 can be removed from the chuck mechanism of the connecting portion 7, and the stirring device 2 and the rotation driving device 3 can be separated. Thereafter, the rotating shaft 6 of the new stirring device 2 is attached to the chuck mechanism of the connecting portion 7. Thereby, a pigment dispersion composition can be manufactured with the new stirring apparatus 2. FIG.

According to the above configuration, the pigment dispersion composition can be continuously produced by removing the stirring device 2 from the rotation driving device 3 and replacing it with a new stirring device 2. Thereby, the manufacturing time of a pigment dispersion composition can be shortened. Moreover, since the washing | cleaning operation | work of the stirring apparatus 2, the removal or replacement | exchange work of a dispersion | distribution medium, an inspection work, repair work etc. can be performed in the state which removed the stirring apparatus 2 from the rotational drive apparatus 3, work efficiency can be raised. At the same time, the manufacturing apparatus 1 can be operated by the new stirring apparatus 2 in parallel with these operations. Thereby, since the manufacturing apparatus 1 can be operated continuously, the stop time of the manufacturing apparatus 1 can be shortened. Further, when the work for removing or replacing the dispersion medium from the container 8 is performed with the stirring device 2 removed, the work can be performed in an environment where it is easy to work, so that the dispersion medium does not fall out during the work. The media can be reliably removed or replaced. Moreover, in each of the plurality of stirring devices 2, different pigments are accommodated in the container 8, whereby the stirring operation can be performed for each pigment. For example, a dark pigment and a light pigment can be stirred with different stirring devices 2. Thereby, the color mixture which arises by the pigment of a different hue can be prevented. In addition to using a plurality of stirring devices 2 for each type of pigment, it is also possible to use the stirring device 2 depending on the type of dispersion resin or solvent used. Thereby, coating-film defects, such as a repellency which arises when resin of a different polarity, a solvent, etc. are mixed can be prevented.
Therefore, according to the pigment dispersion composition manufacturing apparatus 1 as described above, a high-quality pigment composition can be efficiently manufactured.
In addition, when the stirring device 2 is removed from the rotation driving device 3 and cleaned, the stirring device 2 and / or the dispersion medium can be cleaned by connecting to a separately prepared simple rotation driving device (not shown). The simple rotation drive device is a device that stirs and cleans the cleaning solvent filled in the stirring device 2, and therefore does not require the high-speed rotation and high torque motor 16 like the rotation drive device 3 of the present invention. Rotation drive device. When the stirring device 2 is cleaned using the simple rotation drive device, the cleaning solvent may be circulated inside the stirring device 2 using a cleaning solvent circulation device (not shown) having a pump. The cleaning solvent is not particularly limited as long as it dissolves the solvent and resin of the pigment dispersion composition used in the present invention, and water, an organic solvent, or the like can be suitably used.
By washing the stirring device 2 using the simple rotation drive device and / or the washing solvent circulation device, the stirring device 2 that has been used up is washed while the pigment dispersion composition manufacturing device 1 of the present invention is in operation. And a pigment dispersion composition can be efficiently produced.

  Further, when the rotary shaft 6 is configured to be attachable to and detachable from the connecting portion 7, the rotary shaft 6 is likely to shake during rotation. However, the provision of the bearing 9 can prevent the rotary shaft 6 from being shaken. The pigment, solvent and dispersion medium can be well stirred. Moreover, since the stirring apparatus 2 can be stabilized by supporting the stirring apparatus 2 with the support member 5, the pigment, the solvent, and the dispersion medium can be further stirred. Further, when a sliding bearing is used as the bearing 9, vibrations and impacts due to shaft blurring of the rotating shaft 6 can be suppressed, and pigment dispersion can be performed safely even during high-speed rotation. Further, since the structure is simple, the cleaning operation can be easily performed.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. For example, in the above embodiment, the rotating shaft 6 is connected to the rotation driving device 3 by the chuck mechanism, but the connecting method is not limited to this configuration, and is connected by a screw as shown in FIG. It may be configured. In this case, a male screw portion 51 is formed at the upper end portion of the rotating shaft 6, and a female screw portion 52 that is screwed with the male screw portion 51 is formed in the connecting portion 7. The male screw portion 51 has a configuration in which a thread groove is cut in the outer peripheral surface of the rotary shaft 6, and the female screw portion 52 has a configuration in which a screw groove is cut in the inner peripheral surface of the insertion hole 12 of the connecting portion 7. Can be fixed to the connecting portion 7 by screwing them into the female screw portion 52. Moreover, the rotating shaft 6 can be removed from the connection part 7 by loosening a screw. Thereby, the rotating shaft 6 is detachably connected to the rotation driving device 3. In FIG. 3, the same components as those in FIG. 2 are denoted by the same reference numerals and description thereof is omitted.

  Further, the connecting method is not limited to the above-described configuration, and the rotating shaft 6 may be connected to the connecting portion 7 with a bolt 53 as shown in FIG. In this case, the rotating shaft 6 can be fixed by tightening the bolt 53 with the rotating shaft 6 inserted into the insertion hole 12 of the connecting portion 7. Further, the rotating shaft 6 can be detached from the connecting portion 7 by loosening the bolt 53. Thereby, the rotating shaft 6 is detachably connected to the rotation driving device 3. In FIG. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  Moreover, in the said embodiment, although the supporting member 5 was the structure which supports the bottom part of the container 8, as shown in FIG. 5, it is the structure which supports the trunk | drum of the container 8, as shown in FIG. Also good. In this case, the support member 5 is fixed to the rotation drive device 3 and includes a container gripping portion 21 for gripping the trunk portion of the container 8. The container gripping part 21 extends along the circumferential direction of the body part of the container 8 and supports the container 8 from the side. Even with such a configuration, the stirring device 2 can be supported by the support member 5. Further, in this embodiment, the support member 5 is fixed to the rotary drive device 3. However, the support member 5 is not limited to this configuration, and as shown in FIG. The structure where 5 is fixed may be sufficient. In FIG. 6, the same components as those in FIG. 5 are denoted by the same reference numerals and description thereof is omitted.

  Moreover, in the said embodiment, although it was the structure by which the stirring apparatus 2 was installed vertically, it is not limited to this structure, As shown in FIG. 7, even if it is the structure by which the stirring apparatus 2 is installed horizontally, Good. Even if it is such a structure, a liquid mixture (pigment paste) can be stirred. When the stirring device 2 is placed horizontally, the bottom of the container 8 may be supported by the support member 5 from the lateral direction as shown in FIG. 7 and 8, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

  Moreover, in the said embodiment, although the gap separator type stirring apparatus 2 was used, it is not limited to this structure, You may use the annular type stirring apparatus 2. FIG. FIGS. 9A, 9B, and 9C are schematic configuration diagrams of a stirring device 2 according to another embodiment. As shown in FIGS. 9A, 9 </ b> B, and 9 </ b> C, the rotary stirring unit 4 in the annular type stirring device 2 includes an annular rotor 30 fixed to the lower portion of the rotating shaft 6. A screen 31 is disposed inside the annular rotor 30. The rotor 30 rotates with the rotation of the rotating shaft 6 and stirs the mixed liquid in the container 8. In addition, the screen 31 separates the dispersion medium from the mixed liquid that passes through the screen 31. Even in such a configuration, the rotating shaft 6 can be detachably connected to the connecting portion 7 and attached to the rotation driving device 3 as described above. 9A, 9B, and 9C, the same components as those in FIGS. 2, 3, and 4 are given the same reference numerals, and descriptions thereof are omitted. Further, as shown in FIGS. 10A and 10B, the annular stirring device 2 can be supported by the support member 5. 10A and 10B, the same components as those in FIGS. 5 and 6 are denoted by the same reference numerals, and the description thereof is omitted. Further, the annular stirring device 2 can be placed horizontally as shown in FIG. 11 instead of being placed vertically.

  Further, the configuration of the support member 5 is not limited to the above configuration. As shown in FIG. 12, the support member 5 is disposed on the rail 23 extending in the horizontal direction, and the support member 5 is slid in the lateral direction. The structure to be made may be sufficient. The agitating device 2 can be attached to and detached from the rotation driving device 3 by sliding the support member 5 along the rail 23. According to such a configuration, when removing the stirring device 2, the load of the stirring device 2 can be supported by the support member 5, so that no excessive load is applied to the mechanical seal 15. Moreover, the structure which removes the container 8 from the container holding part 21 may be sufficient.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of pigment dispersion composition 2 Stirrer 3 Rotation drive device 4 Rotation stirrer 5 Support member 6 Rotating shaft 7 Connection part 8 Container 9 Bearing 10 Inlet 11 Ejector 12 Insertion hole 13 Stirring blade 14 Gap separator 15 Mechanical seal 16 Motor 17 Bulkhead 18 Claw 20 Container receiving part 21 Container gripping part 22 Support column 30 Rotor 31 Screen 51 Male thread part 52 Female thread part 53 Bolt

Claims (4)

An apparatus for producing a pigment dispersion composition by dispersing a pigment in a solvent,
At least one agitation device comprising rotating agitation means for agitating the pigment, solvent and dispersion medium contained in the container by rotation;
A rotation drive device that rotationally drives the rotary stirring means,
The said rotating stirring means is a manufacturing apparatus of the pigment dispersion composition provided with the rotating shaft connected detachably to the said rotation drive device.   The manufacturing apparatus of the pigment dispersion composition of Claim 1 further provided with the supporting member which supports the said stirring apparatus.   The apparatus for producing a pigment dispersion composition according to claim 1, further comprising a bearing that supports the rotating shaft.   The apparatus for producing a pigment dispersion composition according to any one of claims 1 to 3, comprising a plurality of the stirring devices.