WO2010032984A2 - Ink viscosity regulating apparatus - Google Patents

Ink viscosity regulating apparatus Download PDF

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Publication number
WO2010032984A2
WO2010032984A2 PCT/KR2009/005324 KR2009005324W WO2010032984A2 WO 2010032984 A2 WO2010032984 A2 WO 2010032984A2 KR 2009005324 W KR2009005324 W KR 2009005324W WO 2010032984 A2 WO2010032984 A2 WO 2010032984A2
Authority
WO
WIPO (PCT)
Prior art keywords
ink
solvent
space
viscosity
disk member
Prior art date
Application number
PCT/KR2009/005324
Other languages
French (fr)
Korean (ko)
Other versions
WO2010032984A3 (en
Inventor
나종갑
Original Assignee
Na Jong Kap
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020090039587A external-priority patent/KR101039494B1/en
Application filed by Na Jong Kap filed Critical Na Jong Kap
Publication of WO2010032984A2 publication Critical patent/WO2010032984A2/en
Publication of WO2010032984A3 publication Critical patent/WO2010032984A3/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/195—Ink jet characterised by ink handling for monitoring ink quality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17596—Ink pumps, ink valves

Definitions

  • the present invention relates to an ink viscosity adjusting device, and more particularly, to an ink viscosity adjusting device including sensing means for mixing a solvent and ink in a viscosity adjusting device and measuring a viscosity of ink on a rotating shaft outside the viscosity adjusting device. It is about.
  • a general printing apparatus prints a large amount of printed matter using ink, and in order to obtain a uniform print quality and to efficiently operate the printing apparatus, the viscosity of the ink needs to be kept constant.
  • the ink itself contains a volatile solvent, its concentration tends to gradually increase over time.
  • the viscosity of the ink is changed, not only can the print quality be improved, but also the flow path in the printing apparatus becomes ink. Blockage may cause machine breakdown. Therefore, most printing apparatuses require a means for properly maintaining the viscosity of the ink within a predetermined range.
  • the method of measuring the viscosity of the ink has relied on a manual operation of calculating the viscosity of the ink by filling the perforated container with ink and measuring the time for the ink to escape through the hole.
  • the present inventors have proposed an ink viscosity controller installed in the flow path of ink in Korea Patent No. 0603892 to adjust the viscosity of the ink in real time.
  • the sensing object made of a magnet is always immersed in the flowing ink, so that foreign matters such as iron contained in the ink are adsorbed.
  • the solvent contained in the container is directly supplied to the ink pipe in order to control the viscosity of the ink.
  • the mixing of the ink and the solvent is not smooth, and thus it is difficult to precisely measure and control the ink viscosity. .
  • the present invention was devised in view of the above problems, and provides an ink viscosity adjusting device which prevents contact with ink and enables precise measurement by connecting a sensing object for viscosity measurement to a rotating shaft of a pump for flowing ink. It aims to do it.
  • Still another object of the present invention is to provide an ink viscosity adjusting device capable of promoting uniform mixing by directly mixing ink with a solvent for adjusting ink concentration inside the housing of the viscosity regulator.
  • the ink viscosity control device is installed on the flow path of the ink in the printing apparatus in the ink viscosity control device for adjusting the viscosity of the ink, the solvent is introduced solvent
  • a housing having a solvent inlet space (S1) having an inlet formed therein, an ink mixing space (S2) having an ink inlet formed therein, and an ink outlet (S3) having an ink outlet formed therein;
  • a blocking member installed between the solvent inflow space S1 and the ink mixing space S2;
  • Valve means which is provided in the blocking member so that the solvent inflow space (S1) and the ink mixing space (S2) intermittently communicate with each other so that the solvent of the solvent inflow space (S1) is introduced into the ink mixing space (S2);
  • ink flow rate converting means for changing the flow velocity of the ink according to the viscosity of the ink flowing from the ink mixing space S2 to the ink discharge space S3.
  • valve means includes a valve member for selectively opening and closing the valve hole formed in the blocking member.
  • the present invention further includes an actuator for the valve to move the valve member apart from the blocking member.
  • the flow rate of the ink is provided between the ink inflow space (S1 ') and the ink discharge space (S2'), depending on the viscosity of the ink flowing from the ink inflow space (S1 ') to the ink discharge space (S2')
  • Ink flow rate converting means for causing a change;
  • the ink flow rate converting means comprises first and second disk members spaced apart from each other by the ink flow gap, and the ink flowing from the ink mixing space S2 passes therebetween, wherein the second disk The member is configured to be spaced apart relative to the first disk member.
  • an opening through which ink flowing from the ink mixing space S2 passes is formed at the center of the first disk member, and an ink in the circular buffer groove and the buffer groove is formed at the edge of the second disk member.
  • a plurality of ink through holes are formed so that the ink can pass therethrough.
  • the second disk member may include a first upper surface of the inner side and a second upper surface of the outer side of the buffer groove, and the height of the first upper surface may be lower than that of the second upper surface. While contacting a lower surface of the first disk member, the first upper surface is configured to be spaced apart from the lower surface of the first disk member by an ink flow gap.
  • the ink viscosity control device of the present invention comprises a spaced apart actuator for spaced apart the second disk member; And a blocking film sealingly coupled to the second disk member so that ink in the ink discharge space does not flow out to the spaced actuator portion.
  • the solvent flowing in the solvent inlet space (S1) into the ink mixing space (S2) further comprises a mixing member that is deformed paths.
  • the pump is installed on the flow path of the ink to flow the ink; A drive motor for driving the pump; A sensing object provided on a rotating shaft of the pump or a driving shaft of the driving motor; And a sensor for sensing the sensing object.
  • the ink can be evenly mixed by directly mixing the solvent and the ink inside the viscosity regulator.
  • the mixing performance of the solvent and the ink can be further improved by introducing various mixing members into the housing of the viscosity regulator.
  • the ink viscosity adjusting device of the present invention since the sensing object is provided on a rotating shaft (drive shaft) outside the viscosity regulator, the operation reliability is improved despite the long time use by eliminating the possibility that iron or other foreign substances mixed in the ink are attached. Can be.
  • FIG. 1 is a diagram schematically showing the configuration of a printing apparatus employing an ink viscosity adjusting device according to a preferred embodiment of the present invention.
  • Figure 2 is a cross-sectional view showing the configuration of the viscosity regulator of the ink viscosity control device according to a preferred embodiment of the present invention.
  • Figure 3 is an exploded perspective view showing the configuration of the blocking member and the valve means of the ink viscosity control device according to a preferred embodiment of the present invention.
  • Figure 4 is an exploded perspective view showing the configuration of the ink flow rate conversion means of the ink viscosity control device according to a preferred embodiment of the present invention.
  • 5 and 6 are cross-sectional views showing the operation of the ink viscosity regulator according to a preferred embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing an ink viscosity regulator according to another embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing a blocking member and a valve means of the ink viscosity regulator according to another embodiment of the present invention.
  • FIG. 9 is a plan view showing a blocking member of the ink viscosity regulator according to another embodiment of the present invention.
  • FIG. 10 is a diagram schematically showing the configuration of a printing apparatus employing an ink viscosity adjusting device in still another embodiment of the present invention.
  • FIG. 11 is a cross-sectional view showing the configuration of a viscosity regulator of the ink viscosity control device shown in FIG.
  • FIG. 1 and 2 schematically show a configuration of a printing apparatus employing an ink viscosity regulator according to a preferred embodiment of the present invention.
  • the printing apparatus of the present invention is a storage tank 10 for storing ink, a storage container 20 containing a solvent 110 for adjusting the viscosity of the ink, and the printing roller 31 and the pressure roller And a printing vessel 30 having a 32 and printing the printed fabric 100.
  • the solvent 110 is to adjust the viscosity by diluting the ink as its kind is not limited by the present invention may be any suitable solvent known in the art.
  • the ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing container 30 by the driving force of the pumping means, and the printing roller 31 and the printing roller 31 on the printing container 30. ), There is provided a pressure roller 32 which rotates in contact with it.
  • Unexplained reference numeral 12 is an agitator for stirring the ink in the storage tank 10.
  • the viscosity regulator 50 is installed on the flow path of the ink from the storage tank 10 to the printing container 30, the detailed configuration is shown in FIG.
  • the viscosity controller 50 allows the solvent 110 to be additionally added to dilute the ink if the viscosity of the ink exceeds the reference value.
  • the viscosity regulator 50 is composed of a housing formed with a space therein.
  • the housing is preferably cylindrical and is configured to be assembled into a plurality of parts separated from each other.
  • the housing may be composed of a body 61 and the top cover 62 and the bottom cover 63.
  • the housing of the viscosity regulator 50 has three internal spaces, such as a solvent inlet space (S1), ink mixing space (S2), and ink discharge space (S3).
  • S1 solvent inlet space
  • S2 ink mixing space
  • S3 ink discharge space
  • the solvent inflow space S1 is a space in which the solvent 110 stored in the storage container 20 is introduced, and the ink mixing space S2 is a solvent 110 while ink is introduced from the storage tank 10. It is a space mixed with.
  • the ink discharge space S3 is a space where the ink mixed with the solvent 110 is collected and discharged.
  • the solvent 110 is designed to be directly supplied to the viscosity regulator 50 and mixed with the ink therein. This configuration further promotes uniform mixing of the solvent 110 and the ink.
  • a solvent inlet 64 is formed in the solvent inlet space S1, and the solvent inlet 64 is connected to the storage container 20 through a solvent supply pipe (42 in FIG. 1).
  • a blocking member 65 is installed between the solvent inflow space S1 and the ink mixing space S2, and a valve means is installed in the blocking member 65 to mix the ink inflow space S1 with the ink.
  • the space S2 is intermittently communicated with each other.
  • valve hole 66 is formed at the center of the blocking member 65, and the valve hole 66 is selectively opened and closed by the valve member 67.
  • valve member 67 is formed to correspond to the shape of the valve hole 66, more preferably between the valve hole 66 and the valve member 67, such as rubber or silicone Sealing member 68 is interposed to ensure complete sealing.
  • valve member 67 and the valve hole 66 may be configured in a funnel shape inclined to facilitate mutual coupling.
  • shape and structure of the valve ball and the valve member is not limited by the present invention, it should be understood that a valve of various configurations to perform the opening and closing function can be employed.
  • the valve member 67 is configured to be spaced apart with respect to the blocking member (65). To this end, the valve member 67 is interlocked with the valve actuator 69.
  • the valve actuator 69 is coupled to the extension shaft 70 of the valve member 67 to move or move the valve member 67 with respect to the shutoff member 65.
  • the valve actuator 69 is operated by a solenoid or a valve. Can be an air cylinder.
  • the first blocking film 71 is installed so that the solvent entering the solvent inlet space S1 through the solvent inlet 64 does not flow out to the valve actuator 69.
  • the first blocking film 71 has a circular shape, and a central portion thereof is sealed to the extension shaft 70 of the valve member 67, and an outer circumferential portion thereof has a body 61 and a top cover 62 as shown in FIG. It may be coupled to seal while being interposed between).
  • the first blocking film 71 is made of a flexible material such as synthetic resin or a material capable of deformation in a predetermined range so as not to interfere with the separation movement of the valve member 67. More preferably, in order to improve the flexibility or deformability of the blocking film 71, an annular wrinkle 71a may be formed.
  • the ink mixing space (S2) and the ink discharge space (S3) is formed with an ink inlet 72 and the ink discharge port 73, respectively, these supply passages extending from the storage tank 10 (Fig. 1) 44) and the supply passage 46 to the printing vessel (30).
  • An ink flow rate converting means is provided between the ink mixing space S2 and the ink discharge space S3 so that the ink flowing from the ink mixing space S2 to the ink discharge space S3 varies in speed depending on the viscosity.
  • the ink flow rate converting means includes a first disk member 74 and a second disk member 75 which are installed between the ink mixing space S2 and the ink discharge space S3.
  • An opening 76 is formed at the center of the first disk member 74, and the ink flowing into the ink mixing space S2 through the ink inlet 72 is an ink discharge space S3 through the opening 76. To flow).
  • the second disk member 75 is coupled to the lower portion of the first disk member 74, wherein the second disk member 75 is a predetermined 'ink flow gap' with respect to the first disk member 74. Are spaced apart.
  • the 'ink flow gap' corresponds to a gap between the first disk member 74 and the second disk member 75 through which ink flows, and according to the viscosity of the ink flowing, its flow rate To change. That is, if the viscosity of the ink flowing through the constant ink flow gap is high, the flow rate will be relatively slow, while if the ink viscosity is low, the flow rate will be relatively fast.
  • the ink flow gap is preferably set in the range of 0.5 to 1.5 mm, but is not limited thereto, and may be appropriately set according to the type and viscosity of ink used, the capacity of the printing apparatus, and the like. Therefore, even if the ink flow gap is not designated as a specific value, those of ordinary skill in the art may fully understand and apply the same meaning as above, and thus it may not be interpreted as an unclear term.
  • the lower surface of the first disk member 74 and the upper surface of the second disk member 75 forming the ink flow gap are smooth flat surfaces, bending or irregularities may be formed in some cases.
  • an area facing each other between the first disk member 74 and the second disk member 75 may be set in the range of 3 ⁇ 200 cm 2, but is not necessarily limited thereto.
  • a plurality of ink passing holes 77 are formed at the edges of the second disk member 75 to allow ink to pass therethrough.
  • a circular buffer groove 78 is formed on an upper surface of the second disk member 75, and a plurality of ink through holes 77 are formed in the buffer groove 78.
  • the buffer groove 78 is a buffer space in which ink passing through the ink flow gap is temporarily stayed.
  • the ink passage hole 77 is not necessarily formed to penetrate the second disk member 75, and may be formed in the form of an opening in the lateral direction, such that ink may form the ink flow gap. It only needs to be formed to flow through the ink discharge space (S3) through.
  • an upper surface of the second disk member 75 is divided into an inner first upper surface SF1 and an outer second upper surface SF2 on the boundary of the buffer groove 78.
  • the height is lower than the height of the second upper surface SF2. Therefore, as shown in FIG. 2, the second upper surface SF2 of the second disk member 75 is in contact with the lower surface of the first disk member 74, while the first upper surface of the second disk member 75 is formed.
  • SF1 is spaced apart from the lower surface of the first disk member 74 by the ink flow gap.
  • the second disk member 75 is configured to be spaced apart from the first disk member 74.
  • an extension shaft 79 extends downwardly on a lower surface of the second disk member 75, and a spaced apart actuator 80 is coupled thereto.
  • the spacing actuator 80 is preferably an air cylinder operated by a solenoid or a valve.
  • a second blocking film 81 is installed so that ink in the ink discharge space S3 does not flow out to the spaced portion of the actuator 80.
  • the second blocking film 81 is also circular as described above, the center portion of which is sealed to the extension shaft 79 of the second disk member 75, the outer peripheral portion of the housing body 61 as shown in FIG. ) And the lower cover 63 is interposed between the sealing coupling.
  • the second blocking film 81 is made of a flexible material such as synthetic resin or a material that can be deformed in a predetermined range so as not to hinder the spaced movement of the second disk member 75, and may form an annular pleat 82. have.
  • a mixing member 83 may be further provided to promote mutual mixing of the ink flowing through the ink inlet 72 and the solvent 110 introduced into the solvent inlet space S1.
  • the mixing member 83 is installed in the ink mixing space S2 and is preferably installed on the opening 76 of the first disk member 74.
  • the upper end of the mixing member 83 is closed and a plurality of through-holes 84 are formed at the side, so that the solvent 110 introduced through the valve hole 66 hits the upper end of the mixing member 83. As the path is deformed laterally, it is evenly mixed with the ink in the ink mixing space S2.
  • the ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing vessel 30 by a pumping means, the pumping means is downstream of the viscosity regulator 50 as shown in FIG. It includes a pump 120 installed on the supply passage 46 and a drive motor 140 for driving the pump.
  • the pumping means is provided downstream of the viscosity regulator 50 in this embodiment, as an alternative, it may be provided on a supply path upstream of the ink viscosity regulator.
  • the rotating shaft 121 of the pump 120 is coupled to the driving shaft 141 of the driving motor 140, so that the pump 120 operates to flow ink according to the rotation of the driving motor 140.
  • the drive motor 140 may be configured as an air pump driven by air, but is not necessarily limited thereto.
  • Various pumps having a rotating shaft may be used as the pump 120.
  • a gear pump in which a pair of gears are engaged with each other and rotates is employed.
  • the viscosity change of the ink is made by the sensing means for measuring the rotational speed of the rotary shaft 121 or the drive shaft 141, specifically, the sensing means is the rotary shaft 121 of the pump 120 or
  • the sensing object 85 coupled to the driving shaft 141 of the driving motor 140 includes a sensor 86 that senses the sensing object 85.
  • the sensing object 85 is for measuring the rotation speed of the rotation shaft 121 or the driving shaft 141 and may be made of a magnet, iron, or plastic magnet.
  • the sensing object 85 is not provided inside the housing of the viscosity regulator 50 but is provided outside, there is no frictional force with the ink during rotation, and impurities such as iron contained in the ink are detected. Attachment to the retardation 85 is also prevented.
  • the sensor 86 measures the rotation speed by, for example, detecting a change in the magnetic field of the sensing object 85.
  • the sensor 86 may be installed on the driving motor 140, the pump case 124, or another frame.
  • Ink flowing by the pumping means as described above is introduced into the ink mixing space (S2) inside the housing of the viscosity regulator 50 through the supply passage 44 as shown in FIG.
  • the ink flowing into the ink mixing space S2 passes through the opening 76 of the first disk member 74 via the through hole 84 of the mixing member 83 as shown by the arrow, and then ink Passing between the first disk member 74 and the second disk member 75 spaced apart by the flow gap to reach the buffer groove 78 formed on the upper surface of the second disk member (75). Then, the ink exits to the ink discharge space S3 through the plurality of ink through holes 77 formed in the buffer groove 78. Then, the ink exiting into the ink discharge space S3 is discharged to the ink discharge port 73 again.
  • the rotating shaft 121 of the pump 120 or the driving shaft 141 of the driving motor 140 rotates, and the sensing object 85 coupled to the shaft also rotates at the same speed. Then, the sensor 86 can measure the rotation speed by detecting the sensing object 85.
  • the viscosity of the ink can be calculated according to the formula of hydrodynamics. For example, if the viscosity of the ink is increased, the flow rate of the ink passing through the ink flow gap between the first and second disk members 74 and 75 is lowered, and thus the rotation speed of the rotating shaft will be reduced accordingly. . Since this calculation method is already well known in the art, detailed description thereof will be omitted.
  • the sensing object 85 is installed on a rotating shaft (drive shaft) outside the ink viscosity controller so as not to come into contact with ink, there is no fear that various foreign substances such as iron present in the ink are adsorbed, thereby ensuring permanent operation reliability. do.
  • the valve hole 66 of the blocking member 65 is opened, so that the solvent 110 in the solvent inflow space S1 is introduced into the ink mixing space S2 and mixed with the ink.
  • the solvent 110 collides with the mixing member 83 to deform the path, thereby further facilitating mixing with the ink.
  • the ink mixed with the solvent 110 may be diluted to maintain an appropriate viscosity.
  • the ink viscosity regulator of the present invention can be cleaned in the operating state without the need to open the cover and take out the internal parts when cleaning and cleaning is required.
  • the second actuator 80 is retracted by operating the spacer actuator 80 as shown in FIG. 6. Then, as the second disk member 75 retreats downward and away from the first disk member 74, the distance between the first disk member 74 and the second disk member 75 becomes relatively wider.
  • the spaced apart actuator 80 is operated again to approach the second disk member 75 toward the first disk member 74 to maintain the ink flow gap.
  • a valve hole 66 ' is formed at the center of the blocking member 65' according to the present embodiment, and a circular groove 87 is formed around the valve hole 66 '.
  • a sealing member 88 preferably a rubber ring, is seated inside the circular groove 87 .
  • an inlet groove 89 through which the solvent 110 flows is formed outside the circular groove 87, and the inlet groove 89 is connected to the circular groove 87.
  • the circular groove 87 and the valve hole 66 ′ are configured to be connected to each other by the connecting groove 90.
  • a circular protrusion 91 corresponding to the circular groove 87 is formed at an end portion of the valve member 67 ′ that opens and closes the valve hole 66.
  • the solvent 110 may be supplied to the valve hole 66 ′ along the connection groove 90 through the inlet groove 89 and the circular groove 87.
  • the mixing member 83 ' is interposed between the blocking member 85' and the first disk member 74 to function as a spacer member.
  • Partition walls 92 exist in the mixing member 83 ', and through-holes 93 and 94 are formed at upper and lower sides of the partition wall 92, respectively.
  • the solvent 110 introduced through the valve hole 66 ′ of the blocking member 65 ′ is mixed with the ink introduced while being laterally scattered through the upper through hole 93, and then the solvent 110. ) And the mixed ink flows to the ink discharge space S3 through the lower through hole 94.
  • the structure of the mixing member as described above promotes mixing by modifying the flow path of the solvent 110 and the ink.
  • the shape and structure of the mixing member is not limited to the embodiment of the present invention, it should be understood that various ways of modifying and distorting the path may be applied so that the ink and the solvent 110 may be evenly mixed.
  • Figure 10 schematically shows a schematic configuration of a printing apparatus employing an ink viscosity regulator according to another preferred embodiment of the present invention.
  • the same reference numerals as in the above-described drawings indicate members having the same function.
  • the ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing container 30 by the driving force of the pumping means, and the printing roller 31 on the printing container 30. And a pressure roller 32 which rotates in contact with the printing roller 31.
  • a viscosity controller 50 ′ is installed on the flow path of the ink from the storage tank 10 to the printing container 30.
  • the viscosity regulator 50 ' serves to change the flow rate of the ink flowing along the flow path according to the viscosity.
  • this viscosity regulator 50 is shown in detail in FIG.
  • the same reference numerals as in the above-described drawings indicate members having the same function.
  • Viscosity regulator 50 ′ includes a housing composed of a body 61, an upper cover 62, and a lower cover 63.
  • the housing has an internal space consisting of an ink inflow space (S1 ') and an ink discharge space (S2').
  • the ink inflow space S1 ′ is a space in which ink is introduced into the housing from the storage tank 10, and the ink discharge space S2 ′ is discharged by collecting the ink passing through the ink flow rate converting means as described later. Space.
  • An ink inlet 72 and an ink outlet 73 are formed in the ink inlet space S1 'and the ink outlet space S2', respectively, which are supplied from the supply passage 44 extending from the storage tank 10, respectively. It is connected to the supply passage 46 to the printing vessel (30).
  • Ink flow rate converting means for changing the speed of the ink flowing from the ink inlet space S1 'to the ink discharge space S2' between the ink inflow space S1 'and the ink discharge space S2' according to the viscosity. This is installed.
  • the ink flow rate converting means includes a first disk member 74 and a second disk member 75 provided between the ink inflow space S1 'and the ink discharge space S2'. do.
  • An opening 76 is formed at the center of the first disk member 74, and the second disk member 75 is spaced apart from the first disk member 74 by a predetermined 'ink flow gap'.
  • the second disk member 75 is configured to be spaced apart from the first disk member 74 by the actuator 80.
  • a blocking film 81 is provided to prevent the ink in the ink discharge space S2 'from flowing out to the actuator 80.
  • the mixing member 83 may be further selectively provided to evenly distribute the ink flowing through the ink inlet 72.
  • the solvent 110 is directly supplied onto the flow path of the ink.
  • the solvent supply pipe 42 of the storage container 20 storing the solvent 110 is provided with the ink supply passage 44 or 46. And supply solvent 110).
  • the solvent supply pipe 42 is provided with a valve 43 to open and close the solvent supply pipe 42 by control by a controller not shown.
  • the ink contained in the storage tank 10 while the pump 120 is operated in accordance with the operation of the drive motor 140 is the supply passage (44, 46)) Supplied through. At this time, the valve 43 of the solvent supply pipe 42 is closed.
  • the ink flows into the ink inflow space S1 ′ inside the housing of the viscosity regulator 50 ′ through the supply passage 44, and then penetrates the mixing member 83 as shown by arrows in FIG. 11. It passes through the opening 76 of the first disk member 74 via the hole 84, and then passes between the first disk member 74 and the second disk member 75 spaced by the ink flow gap, The buffer groove 78 formed on the upper surface of the second disk member 75 is reached. Then, the ink exits to the ink discharge space S2 'through the plurality of ink through holes 77 formed in the buffer groove 78. Then, the ink exiting into the ink discharge space S2 'is discharged to the ink discharge port 73 again.
  • This signal is transmitted to a controller not shown, and the controller operates to open the valve 43 so that the solvent 110 is supplied to the supply passage 44 through the solvent supply pipe 42 to dilute the ink. .
  • the operation of cleaning and cleaning in the ink viscosity regulator according to this embodiment is the same as in the above-described embodiment. That is, the distance between the first disk member 74 and the second disk member 75 is relatively widened while the actuator 80 is operated to retreat the second disk member 75 downward.
  • the actuator 80 is operated again to approach the second disk member 75 toward the first disk member 74 to maintain the ink flow gap.

Abstract

The present invention relates to an ink viscosity regulating apparatus which is installed on an ink flow path in a printer and regulates the viscosity of ink. The ink viscosity regulating apparatus comprises a housing, an isolation member, a valve unit, and an ink flux control unit. The housing includes a solvent inlet section (S1) with an inlet for solvent, an ink mixing section (S2) with an inlet for ink, and an ink outlet section (S3) with an outlet to discharge ink. The isolation member is installed between the solvent inlet section (S1) and the ink mixing section (S2). The valve unit is installed on the isolation member and selectively allows connection between the solvent inlet section (S1) and the ink mixing section (S2) so that the solvent in the solvent inlet section (S1) flows into the ink mixing section (S2). The ink flux control unit varies the flow rate of ink according to the viscosity of ink flowing from the ink mixing section (S2) to the ink outlet section (S3).

Description

잉크 점도 조절 장치 Ink viscosity controller
본 발명은 잉크 점도 조절 장치에 관한 것으로서, 보다 상세하게는 점도 조절기 내부에서 용매와 잉크를 혼합시킴과 동시에 잉크의 점도를 측정하는 센싱수단을 점도 조절기 외부의 회전축에 구비하도록 한 잉크 점도 조절 장치에 관한 것이다.The present invention relates to an ink viscosity adjusting device, and more particularly, to an ink viscosity adjusting device including sensing means for mixing a solvent and ink in a viscosity adjusting device and measuring a viscosity of ink on a rotating shaft outside the viscosity adjusting device. It is about.
일반적인 인쇄장치는 잉크를 사용하여 다량의 인쇄물을 인쇄하게 되는데, 균일한 인쇄 품질을 얻고 인쇄장치의 효율적인 운전을 위해서는 잉크의 점도가 일정하게 유지될 필요가 있다. A general printing apparatus prints a large amount of printed matter using ink, and in order to obtain a uniform print quality and to efficiently operate the printing apparatus, the viscosity of the ink needs to be kept constant.
잉크는 자체적으로 휘발성 용매를 포함하므로 시간이 지남에 따라 그 농도가 점차 진해지는 경향이 있는데, 이렇게 잉크의 점도가 변화되면, 인쇄품질의 향상을 기대할 수 없을 뿐만 아니라, 인쇄장치 내의 유동통로가 잉크에 의해 막힘으로써 기계의 고장을 초래하기도 한다. 따라서, 대부분의 인쇄장치는 잉크의 점도를 소정 범위 내로 적절히 유지시키는 수단이 필요하다.Since the ink itself contains a volatile solvent, its concentration tends to gradually increase over time. When the viscosity of the ink is changed, not only can the print quality be improved, but also the flow path in the printing apparatus becomes ink. Blockage may cause machine breakdown. Therefore, most printing apparatuses require a means for properly maintaining the viscosity of the ink within a predetermined range.
종래에 있어서 잉크의 점도를 측정하는 방법은 구멍이 뚫린 용기에 잉크를 채우고 그 구멍을 통해 잉크가 빠져나가는 시간을 측정함으로써 잉크의 점도를 계산하는 수작업에 의존하였다.Conventionally, the method of measuring the viscosity of the ink has relied on a manual operation of calculating the viscosity of the ink by filling the perforated container with ink and measuring the time for the ink to escape through the hole.
이러한 방식은, 측정 시간이 지나치게 오래 소요되고, 잉크의 마지막 한 방울까지 측정하여야 하므로 정밀한 측정이 어려웠다. 무엇보다도, 작업자가 불연속적으로 잉크 점도를 측정하여 이를 조절하게 되므로 균일한 점도 유지 관리가 보장되지 않는 단점이 있다.This method was difficult to precisely measure because the measurement time was too long and the last drop of ink had to be measured. First of all, since the operator measures the ink viscosity discontinuously and adjusts it, there is a disadvantage that uniform viscosity maintenance is not guaranteed.
그 외에도, 기계적인 측정 장치를 잉크의 유동통로 내에 설치함으로써 잉크의 점도를 측정하는 방법이 제안되었으나, 측정 장치의 잉크 유동통로가 상대적으로 점도가 큰 잉크에 의해 쉽게 막히는 경우가 빈번히 발생하고, 더욱이 이 경우 측정 장치를 분리하여 세척하는 것이 용이하지 않았다. 따라서, 주기적으로 새로운 측정 장치를 교환하여야 하므로 경제적으로 매우 불리하였다.In addition, a method of measuring the viscosity of ink by installing a mechanical measuring device in the flow path of ink has been proposed, but the ink flow path of the measuring device is frequently blocked by ink having a relatively high viscosity. In this case, it was not easy to separate and wash the measuring device. Therefore, it is very economically disadvantageous to periodically change new measuring devices.
상기와 같은 점을 감안하여 본 발명자는 대한민국 특허 제0637892호에서 잉크의 유동경로 상에 설치되어 실시간으로 잉크의 점도를 측정함으로써 이를 조절할 수 있도록 하는 잉크 점도 조절기를 제안한 바 있다. 그러나, 상기 잉크 점도 조절기에서는 자석으로 이루어진 피감지체가 항상 유동하는 잉크 내에 잠기게 되므로 잉크 속에 포함된 철 등의 이물질이 흡착되는 문제가 발생하였다.In view of the above, the present inventors have proposed an ink viscosity controller installed in the flow path of ink in Korea Patent No. 0603892 to adjust the viscosity of the ink in real time. However, in the ink viscosity regulator, the sensing object made of a magnet is always immersed in the flowing ink, so that foreign matters such as iron contained in the ink are adsorbed.
또한, 상기 발명에서는 잉크의 점도를 조절하기 위해 용기에 담긴 용매를 잉크 배관으로 직접 공급하게 되는데 이 경우 잉크와 용매의 섞임이 원활하지 못하고, 그로 인해 잉크 점도를 정밀하게 측정하여 제어하기가 곤란하다.In addition, in the above invention, the solvent contained in the container is directly supplied to the ink pipe in order to control the viscosity of the ink. In this case, the mixing of the ink and the solvent is not smooth, and thus it is difficult to precisely measure and control the ink viscosity. .
본 발명은 상기와 같은 문제점을 감안하여 창안된 것으로서, 점도 측정을 위한 피감지체를 잉크를 유동시키는 펌프의 회전축에 연결함으로써 잉크와의 접촉을 방지하고 정밀한 측정이 가능하도록 한 잉크 점도 조절 장치를 제공하는 것을 목적으로 한다.The present invention was devised in view of the above problems, and provides an ink viscosity adjusting device which prevents contact with ink and enables precise measurement by connecting a sensing object for viscosity measurement to a rotating shaft of a pump for flowing ink. It aims to do it.
본 발명의 또 다른 목적은 점도 조절기의 하우징 내부에서 잉크 농도를 조절하는 용매와 잉크를 직접 혼합시킴으로써 균일한 혼합을 촉진할 수 있는 잉크 점도 조절 장치를 제공하는 것이다.Still another object of the present invention is to provide an ink viscosity adjusting device capable of promoting uniform mixing by directly mixing ink with a solvent for adjusting ink concentration inside the housing of the viscosity regulator.
상기와 같은 목적을 달성하기 위해서 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치는 인쇄장치에서 잉크의 유동경로 상에 설치되어 잉크의 점도를 조절하는 잉크 점도 조절 장치에 있어서, 용매가 유입되는 용매유입구가 형성된 용매유입공간(S1)과, 잉크가 유입되는 잉크유입구가 형성된 잉크혼합공간(S2)과, 잉크가 배출되는 잉크배출구가 형성된 잉크배출공간(S3)을 가지는 하우징; 상기 용매유입공간(S1)과 잉크혼합공간(S2) 사이에 설치된 차단부재; 상기 차단부재에 구비되어 상기 용매유입공간(S1)과 잉크혼합공간(S2)을 상호 단속적으로 소통시킴으로써 상기 용매유입공간(S1)의 용매가 상기 잉크혼합공간(S2)으로 투입되도록 하는 밸브수단; 및 상기 잉크혼합공간(S2)으로부터 상기 잉크배출공간(S3)으로 유동하는 잉크의 점도에 따라서 잉크의 유동속도가 변화되도록 하는 잉크유속변환수단을 포함하도록 구성된다.In order to achieve the above object, the ink viscosity control device according to a preferred embodiment of the present invention is installed on the flow path of the ink in the printing apparatus in the ink viscosity control device for adjusting the viscosity of the ink, the solvent is introduced solvent A housing having a solvent inlet space (S1) having an inlet formed therein, an ink mixing space (S2) having an ink inlet formed therein, and an ink outlet (S3) having an ink outlet formed therein; A blocking member installed between the solvent inflow space S1 and the ink mixing space S2; Valve means which is provided in the blocking member so that the solvent inflow space (S1) and the ink mixing space (S2) intermittently communicate with each other so that the solvent of the solvent inflow space (S1) is introduced into the ink mixing space (S2); And ink flow rate converting means for changing the flow velocity of the ink according to the viscosity of the ink flowing from the ink mixing space S2 to the ink discharge space S3.
여기에서, 상기 밸브수단은, 상기 차단부재에 형성된 밸브공을 선택적으로 개폐하는 밸브부재를 포함한다.Here, the valve means includes a valve member for selectively opening and closing the valve hole formed in the blocking member.
바람직하게, 본 발명은 상기 밸브부재를 상기 차단부재에 대해서 이격운동시키는 밸브용 액츄에이터를 더 포함한다.Preferably, the present invention further includes an actuator for the valve to move the valve member apart from the blocking member.
본 발명의 또 다른 바람직한 실시예에 따르면, 인쇄장치에서 잉크의 유동경로 상에 설치되어 잉크의 점도를 조절하는 잉크 점도 조절 장치에 있어서, 잉크가 유입되는 잉크유입구가 형성된 잉크유입공간(S1')과, 잉크가 배출되는 잉크배출구가 형성된 잉크배출공간(S2')을 가지는 하우징; 상기 잉크유입공간(S1')과 잉크배출공간(S2') 사이에 설치되어, 상기 잉크유입공간(S1')으로부터 상기 잉크배출공간(S2')으로 유동하는 잉크의 점도에 따라서 잉크의 유동속도가 변화되도록 하는 잉크유속변환수단; 용매가 저장된 저장용기; 상기 저장용기의 용매를 상기 잉크와 혼합되도록 공급하는 용매공급관; 및 상기 용매공급관을 개폐하는 밸브;를 포함하고, 상기 잉크유속변환수단을 통과한 잉크의 유동속도가 기준값이하로 감소할 경우에는 상기 밸브를 개방하여 상기 용매가 공급되도록 하는 잉크 점도 조절 장치가 제공된다.According to another preferred embodiment of the present invention, in the ink viscosity adjusting device which is installed on the flow path of the ink in the printing apparatus to adjust the viscosity of the ink, the ink inlet space (S1 ') formed with the ink inlet through which the ink is introduced And a housing having an ink discharge space S2 'formed with an ink discharge port through which ink is discharged; The flow rate of the ink is provided between the ink inflow space (S1 ') and the ink discharge space (S2'), depending on the viscosity of the ink flowing from the ink inflow space (S1 ') to the ink discharge space (S2') Ink flow rate converting means for causing a change; A storage container in which a solvent is stored; A solvent supply pipe for supplying a solvent of the storage container to be mixed with the ink; And a valve for opening and closing the solvent supply pipe, wherein the ink viscosity adjusting device opens the valve so that the solvent is supplied when the flow rate of the ink passing through the ink flow rate converting means decreases below a reference value. do.
본 발명에 따르면, 상기 잉크유속변환수단은, 상호 잉크유동간극만큼 이격되어 상기 잉크혼합공간(S2)으로부터 유입된 잉크가 그 사이로 통과하는 제1 및 제2 디스크부재를 포함하고, 상기 제2 디스크부재는 상기 제1 디스크부재에 대해서 이격 운동가능하도록 구성된다.According to the present invention, the ink flow rate converting means comprises first and second disk members spaced apart from each other by the ink flow gap, and the ink flowing from the ink mixing space S2 passes therebetween, wherein the second disk The member is configured to be spaced apart relative to the first disk member.
바람직하게, 상기 제1 디스크부재의 중심에는 상기 잉크혼합공간(S2)으로부터 유입된 잉크가 통과하는 개구부가 형성되고, 상기 제2 디스크부재의 가장자리에는 원형의 완충그루부 및 상기 완충그루부 내에 잉크가 통과할 수 있도록 복수의 잉크통과공이 형성되어 있다.Preferably, an opening through which ink flowing from the ink mixing space S2 passes is formed at the center of the first disk member, and an ink in the circular buffer groove and the buffer groove is formed at the edge of the second disk member. A plurality of ink through holes are formed so that the ink can pass therethrough.
또한, 상기 제2 디스크부재는 상기 완충그루브를 경계로 내측의 제1 상면과 외측의 제2 상면을 포함하고, 상기 제1 상면의 높이는 제2 상면의 높이보다 낮으며, 상기 제2 상면은 상기 제1 디스크부재의 하면과 접촉하는 반면, 상기 제1 상면은 제1 디스크부재의 하면과 잉크유동간극 만큼 이격되도록 구성된다.The second disk member may include a first upper surface of the inner side and a second upper surface of the outer side of the buffer groove, and the height of the first upper surface may be lower than that of the second upper surface. While contacting a lower surface of the first disk member, the first upper surface is configured to be spaced apart from the lower surface of the first disk member by an ink flow gap.
바람직하게 본 발명의 잉크 점도 조절 장치는 상기 제2 디스크부재를 이격운동시키는 이격용 액츄에이터; 및 상기 잉크배출공간에 있는 잉크가 상기 이격용 액츄에이터 부위로 유출되지 못하도록 상기 제2 디스크부재에 실링 결합되는 차단막;을 포함한다.Preferably, the ink viscosity control device of the present invention comprises a spaced apart actuator for spaced apart the second disk member; And a blocking film sealingly coupled to the second disk member so that ink in the ink discharge space does not flow out to the spaced actuator portion.
본 발명의 또 다른 실시예에 따르면, 상기 용매유입공간(S1)에서 상기 잉크혼합공간(S2)으로 유입되는 용매가 부딪혀 그 경로가 변형되는 믹싱부재를 더 포함한다.According to another embodiment of the present invention, the solvent flowing in the solvent inlet space (S1) into the ink mixing space (S2) further comprises a mixing member that is deformed paths.
본 발명의 또 다른 실시예에 따르면, 상기 잉크의 유동경로 상에 설치되어 잉크를 유동시키는 펌프; 상기 펌프를 구동시키는 구동모터; 상기 펌프의 회전축 또는 상기 구동모터의 구동축에 설치된 피감지체; 및 상기 피감지체를 감지하는 센서;를 포함한다.According to another embodiment of the invention, the pump is installed on the flow path of the ink to flow the ink; A drive motor for driving the pump; A sensing object provided on a rotating shaft of the pump or a driving shaft of the driving motor; And a sensor for sensing the sensing object.
본 발명의 잉크 점도 조절 장치에 따르면, 점도 조절기 내부에서 용매와 잉크를 직접 혼합함으로써 잉크가 골고루 혼합되도록 할 수 있다. 특히, 점도 조절기의 하우징 내부에 다양한 믹싱부재를 도입함으로써 용매와 잉크의 혼합 성능은 더욱 향상될 수 있다.According to the ink viscosity adjusting device of the present invention, the ink can be evenly mixed by directly mixing the solvent and the ink inside the viscosity regulator. In particular, the mixing performance of the solvent and the ink can be further improved by introducing various mixing members into the housing of the viscosity regulator.
또한, 본 발명의 잉크 점도 조절 장치에서는, 피감지체가 점도 조절기 외부의 회전축(구동축)에 설치되어 있으므로 잉크 속에 혼재된 철이나 기타 이물질이 부착될 가능성을 배제함으로써 장시간 사용에도 불구하고 동작 신뢰성을 높일 수 있다. In addition, in the ink viscosity adjusting device of the present invention, since the sensing object is provided on a rotating shaft (drive shaft) outside the viscosity regulator, the operation reliability is improved despite the long time use by eliminating the possibility that iron or other foreign substances mixed in the ink are attached. Can be.
나아가, 잉크의 점도에 따라 회전축(구동축)에 걸리는 부하의 변화를 직접적으로 측정하기 때문에 점도 측정 정밀성을 높일 수 있는 이점이 있다.Furthermore, since the change of the load applied to the rotating shaft (drive shaft) is directly measured in accordance with the viscosity of the ink, there is an advantage in that the viscosity measurement precision can be improved.
본 발명은 아래 도면들에 의해 구체적으로 설명되지만, 이러한 도면은 본 발명의 바람직한 실시예를 나타낸 것이므로 본 발명의 기술사상이 그 도면에만 한정되어 해석되어서는 아니된다.Although the present invention will be described in detail with reference to the following drawings, these drawings illustrate preferred embodiments of the present invention, and the technical concept of the present invention is not limited to the drawings and should not be interpreted.
도 1은 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치가 채용된 인쇄 장치의 구성을 도식적으로 나타낸 도면이다.1 is a diagram schematically showing the configuration of a printing apparatus employing an ink viscosity adjusting device according to a preferred embodiment of the present invention.
도 2는 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치의 점도 조절기의 구성을 나타낸 단면도이다.Figure 2 is a cross-sectional view showing the configuration of the viscosity regulator of the ink viscosity control device according to a preferred embodiment of the present invention.
도 3은 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치의 차단부재와 밸브수단의 구성을 보여주는 분해사시도이다.Figure 3 is an exploded perspective view showing the configuration of the blocking member and the valve means of the ink viscosity control device according to a preferred embodiment of the present invention.
도 4는 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치의 잉크유속변환수단의 구성을 보여주는 분해사시도이다.Figure 4 is an exploded perspective view showing the configuration of the ink flow rate conversion means of the ink viscosity control device according to a preferred embodiment of the present invention.
도 5 및 도 6은 본 발명의 바람직한 실시예에 따른 잉크 점도 조절기의 동작을 나타내는 단면도이다.5 and 6 are cross-sectional views showing the operation of the ink viscosity regulator according to a preferred embodiment of the present invention.
도 7은 본 발명의 또 다른 실시예에 따른 잉크 점도 조절기를 보여주는 단면도이다.7 is a cross-sectional view showing an ink viscosity regulator according to another embodiment of the present invention.
도 8은 본 발명의 또 다른 실시예에 따른 잉크 점도 조절기의 차단부재와 밸브수단을 보여주는 단면도이다.8 is a cross-sectional view showing a blocking member and a valve means of the ink viscosity regulator according to another embodiment of the present invention.
도 9는 본 발명의 또 다른 실시예에 따른 잉크 점도 조절기의 차단부재를 보여주는 평면도이다.9 is a plan view showing a blocking member of the ink viscosity regulator according to another embodiment of the present invention.
도 10은 본 발명의 또 다른 실시예에 잉크 점도 조절 장치가 채용된 인쇄 장치의 구성을 도식적으로 나타낸 도면이다.10 is a diagram schematically showing the configuration of a printing apparatus employing an ink viscosity adjusting device in still another embodiment of the present invention.
도 11은 도 10에 도시된 잉크 점도 조절 장치의 점도 조절기의 구성을 나타낸 단면도이다.11 is a cross-sectional view showing the configuration of a viscosity regulator of the ink viscosity control device shown in FIG.
도 1 및 도 2에는 본 발명의 바람직한 실시예에 따른 잉크 점도 조절기가 채용된 인쇄장치의 개략적인 구성이 도식적으로 나타나 있다.1 and 2 schematically show a configuration of a printing apparatus employing an ink viscosity regulator according to a preferred embodiment of the present invention.
도면을 참조하면, 본 발명의 인쇄장치는 잉크를 저장하는 저장탱크(10), 잉크의 점도를 조절하기 위한 용매(110)가 담겨있는 저장용기(20), 및 인쇄롤러(31)와 압동롤러(32)를 구비하고 피인쇄원단(100)을 인쇄하는 인쇄용기(30)를 포함한다.Referring to the drawings, the printing apparatus of the present invention is a storage tank 10 for storing ink, a storage container 20 containing a solvent 110 for adjusting the viscosity of the ink, and the printing roller 31 and the pressure roller And a printing vessel 30 having a 32 and printing the printed fabric 100.
상기 용매(110)는 잉크를 희석하여 점도를 조절하기 위한 것으로서 그 종류는 본 발명에 의해 한정되지 않으며 당해 기술분야에 알려진 적절한 용매가 채용될 수 있다.The solvent 110 is to adjust the viscosity by diluting the ink as its kind is not limited by the present invention may be any suitable solvent known in the art.
상기 저장탱크(10) 내에 담긴 잉크는 펌핑수단의 구동력에 의해 저장탱크(10)로부터 인쇄용기(30)로 공급되며, 상기 인쇄용기(30) 상에는 인쇄롤러(31)와, 상기 인쇄롤러(31)에 접촉하여 회전하는 압동롤러(32)가 설치되어 있다.The ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing container 30 by the driving force of the pumping means, and the printing roller 31 and the printing roller 31 on the printing container 30. ), There is provided a pressure roller 32 which rotates in contact with it.
피인쇄원단(100)은 상기 인쇄롤러(31)와 압동롤러(32) 사이를 통과하면서, 인쇄롤러(31)가 인쇄용기(30)에 담긴 잉크를 적셔 인쇄작업을 하게 된다. 상기 인쇄용기(30)의 잉크는 다시 회수통로(40)를 통해 저장탱크(10)로 복귀함으로써 순환하게 된다. 미설명된 참조부호 12는 저장탱크(10) 내의 잉크를 교반시키는 교반기이다.As the printed material 100 passes between the printing roller 31 and the pressure roller 32, the printing roller 31 wets the ink contained in the printing container 30 to perform a printing operation. The ink of the printing container 30 is circulated by returning to the storage tank 10 through the recovery passage 40 again. Unexplained reference numeral 12 is an agitator for stirring the ink in the storage tank 10.
상기 저장탱크(10)에서 인쇄용기(30)에 이르는 잉크의 유동경로 상에는 점도 조절기(50)가 설치되는데, 그 상세한 구성은 도 2에 도시되어 있다.The viscosity regulator 50 is installed on the flow path of the ink from the storage tank 10 to the printing container 30, the detailed configuration is shown in FIG.
상기 점도 조절기(50)는 만약 잉크의 점도가 기준값을 초과하는 경우에는 잉크를 희석하기 위해서 용매(110)가 추가적으로 투입되도록 한다. The viscosity controller 50 allows the solvent 110 to be additionally added to dilute the ink if the viscosity of the ink exceeds the reference value.
도 1 및 도 2를 함께 참조하면, 본 발명에 따른 점도 조절기(50)는 내부에 공간이 형성된 하우징으로 구성된다. 상기 하우징은 바람직하게 원통형을 이루며, 복수개의 부분으로 분리되어 상호 조립할 수 있도록 구성된다. 예를 들어, 하우징 은 몸체(61)와 상단덮개(62) 및 하단덮개(63)로 구성될 수 있다.1 and 2 together, the viscosity regulator 50 according to the present invention is composed of a housing formed with a space therein. The housing is preferably cylindrical and is configured to be assembled into a plurality of parts separated from each other. For example, the housing may be composed of a body 61 and the top cover 62 and the bottom cover 63.
본 발명의 바람직한 실시예에 따른 점도 조절기(50)의 하우징은 세 개의 내부 공간을 가지는데, 용매유입공간(S1), 잉크혼합공간(S2), 그리고 잉크배출공간(S3)이 그것이다.The housing of the viscosity regulator 50 according to a preferred embodiment of the present invention has three internal spaces, such as a solvent inlet space (S1), ink mixing space (S2), and ink discharge space (S3).
상기 용매유입공간(S1)은 저장용기(20)에 저장되어 있는 용매(110)가 유입되는 공간이며, 상기 잉크혼합공간(S2)은 저장탱크(10)로부터 잉크가 유입되는 동시에 용매(110)와 혼합되는 공간이다. 또한, 상기 잉크배출공간(S3)은 용매(110)와 혼합된 잉크가 모여서 배출되는 공간이다.The solvent inflow space S1 is a space in which the solvent 110 stored in the storage container 20 is introduced, and the ink mixing space S2 is a solvent 110 while ink is introduced from the storage tank 10. It is a space mixed with. In addition, the ink discharge space S3 is a space where the ink mixed with the solvent 110 is collected and discharged.
본 발명에 따르면, 용매(110)가 점도 조절기(50)에 직접 공급되고 그 내부에서 잉크와 혼합되도록 설계되어 있다. 이러한 구성은 용매(110)와 잉크의 균일한 혼합을 더욱 촉진하게 된다.According to the present invention, the solvent 110 is designed to be directly supplied to the viscosity regulator 50 and mixed with the ink therein. This configuration further promotes uniform mixing of the solvent 110 and the ink.
이를 위해 상기 용매유입공간(S1)에는 용매유입구(64)가 형성되어 있으며, 이 용매유입구(64)는 용매공급관(도 1의 42)을 통해 저장용기(20)와 연결되어 있다.To this end, a solvent inlet 64 is formed in the solvent inlet space S1, and the solvent inlet 64 is connected to the storage container 20 through a solvent supply pipe (42 in FIG. 1).
또한, 상기 용매유입공간(S1)과 잉크혼합공간(S2) 사이에는 차단부재(65)가 설치되어 있으며, 상기 차단부재(65)에는 밸브수단이 설치되어 상기 용매유입공간(S1)과 잉크혼합공간(S2)을 상호 단속적으로 소통시킨다.In addition, a blocking member 65 is installed between the solvent inflow space S1 and the ink mixing space S2, and a valve means is installed in the blocking member 65 to mix the ink inflow space S1 with the ink. The space S2 is intermittently communicated with each other.
상기 밸브수단을 상세히 도시한 도 3을 참조하면, 차단부재(65)의 중심에는 밸브공(66)이 형성되어 있으며, 상기 밸브공(66)은 밸브부재(67)에 의해 선택적으로 개폐된다.Referring to FIG. 3, which shows the valve means in detail, a valve hole 66 is formed at the center of the blocking member 65, and the valve hole 66 is selectively opened and closed by the valve member 67.
바람직하게, 개폐 기능을 향상시키기 위해서 상기 밸브부재(67)는 밸브공(66)의 형상에 상응하도록 형성되며, 더욱 바람직하게 밸브공(66)과 밸브부재(67) 사이에 고무나 실리콘과 같은 실링부재(68)가 개재되어 완전한 밀폐가 이루어지도록 한다. Preferably, in order to improve the opening and closing function, the valve member 67 is formed to correspond to the shape of the valve hole 66, more preferably between the valve hole 66 and the valve member 67, such as rubber or silicone Sealing member 68 is interposed to ensure complete sealing.
상기 밸브부재(67)와 밸브공(66)은 상호 결합이 용이하도록 경사진 깔때기 형상으로 구성될 수 있다. 그러나, 상기 밸브공과 밸브부재의 형상과 구조는 본 발명에 의해 한정되는 것은 아니며, 개폐 기능을 수행하는 다양한 구성의 밸브가 채용될 수 있는 것으로 이해되어야 한다.The valve member 67 and the valve hole 66 may be configured in a funnel shape inclined to facilitate mutual coupling. However, the shape and structure of the valve ball and the valve member is not limited by the present invention, it should be understood that a valve of various configurations to perform the opening and closing function can be employed.
상기 밸브부재(67)는 상기 차단부재(65)에 대해서 이격운동할 수 있도록 구성된다. 이를 위해 상기 밸브부재(67)는 밸브용 액츄에이터(69)와 연동된다. 상기 밸브용 액츄에이터(69)는 밸브부재(67)의 연장축(70)과 결합되어 밸브부재(67)를 차단부재(65)에 대해 접근 또는 이격운동시키는 것으로서, 바람직하게 솔레노이드 또는 밸브에 의해 작동되는 에어실린더가 될 수 있다.The valve member 67 is configured to be spaced apart with respect to the blocking member (65). To this end, the valve member 67 is interlocked with the valve actuator 69. The valve actuator 69 is coupled to the extension shaft 70 of the valve member 67 to move or move the valve member 67 with respect to the shutoff member 65. Preferably, the valve actuator 69 is operated by a solenoid or a valve. Can be an air cylinder.
또한, 상기 용매유입구(64)를 통해 용매유입공간(S1)으로 들어온 용매가 상기 밸브용 액츄에이터(69) 부위로 유출되지 못하도록 제1 차단막(71)이 설치된다. In addition, the first blocking film 71 is installed so that the solvent entering the solvent inlet space S1 through the solvent inlet 64 does not flow out to the valve actuator 69.
상기 제1 차단막(71)은 원형을 이루고 그 중심부는 밸브부재(67)의 연장축(70)에 실링 결합되고, 외주부는 도 2에 도시된 바와 같이 하우징의 몸체(61)와 상단 덮개(62) 사이에 개재된 채로 실링 결합될 수 있다. The first blocking film 71 has a circular shape, and a central portion thereof is sealed to the extension shaft 70 of the valve member 67, and an outer circumferential portion thereof has a body 61 and a top cover 62 as shown in FIG. It may be coupled to seal while being interposed between).
상기 제1 차단막(71)은 밸브부재(67)의 이격운동을 방해하지 않도록 합성수지와 같이 유연성 있는 소재 또는 소정 범위의 변형이 가능한 소재로 제작된다. 더욱 바람직하게, 차단막(71)의 유연성 또는 변형성을 향상시키기 위해서 환형의 주름(71a)을 형성할 수도 있다.The first blocking film 71 is made of a flexible material such as synthetic resin or a material capable of deformation in a predetermined range so as not to interfere with the separation movement of the valve member 67. More preferably, in order to improve the flexibility or deformability of the blocking film 71, an annular wrinkle 71a may be formed.
한편, 상기 잉크혼합공간(S2)과 잉크배출공간(S3)에는 각각 잉크유입구(72)와 잉크배출구(73)가 형성되어 있으며, 이들은 각각 저장탱크(10)로부터 연장되는 공급통로(도 1의 44) 및 인쇄용기(30)로 향하는 공급통로(46)와 연결되어 있다.On the other hand, the ink mixing space (S2) and the ink discharge space (S3) is formed with an ink inlet 72 and the ink discharge port 73, respectively, these supply passages extending from the storage tank 10 (Fig. 1) 44) and the supply passage 46 to the printing vessel (30).
상기 잉크혼합공간(S2)과 잉크배출공간(S3) 사이에는 잉크혼합공간(S2)에서 잉크배출공간(S3)으로 유동하는 잉크가 점도에 따라서 속도가 변하도록 하는 잉크유속변환수단이 설치된다.An ink flow rate converting means is provided between the ink mixing space S2 and the ink discharge space S3 so that the ink flowing from the ink mixing space S2 to the ink discharge space S3 varies in speed depending on the viscosity.
구체적으로, 상기 잉크유속변환수단은 상기 잉크혼합공간(S2)과 잉크배출공간(S3) 사이에 설치되는 제1 디스크부재(74) 및 제2 디스크부재(75)를 포함한다. Specifically, the ink flow rate converting means includes a first disk member 74 and a second disk member 75 which are installed between the ink mixing space S2 and the ink discharge space S3.
상기 제1 디스크부재(74)의 중심에는 개구부(76)가 형성되어 있으며, 잉크유입구(72)를 통해 잉크혼합공간(S2)으로 유입된 잉크는 상기 개구부(76)를 통해 잉크배출공간(S3)으로 흘러가게 된다.An opening 76 is formed at the center of the first disk member 74, and the ink flowing into the ink mixing space S2 through the ink inlet 72 is an ink discharge space S3 through the opening 76. To flow).
또한, 상기 제1 디스크부재(74)의 하부에는 제2 디스크부재(75)가 결합되는데, 이때 제2 디스크부재(75)는 제1 디스크부재(74)에 대해 소정의 '잉크유동간극'만큼 이격되어 있다.In addition, the second disk member 75 is coupled to the lower portion of the first disk member 74, wherein the second disk member 75 is a predetermined 'ink flow gap' with respect to the first disk member 74. Are spaced apart.
본 명세서 및 특허청구범위에서 '잉크유동간극'이란 잉크가 유동하는 제1 디스크부재(74)와 제2 디스크부재(75) 사이의 갭에 해당하는 것으로서, 유동하는 잉크의 점도에 따라서 그 유동속도가 변화되도록 하는 역할을 한다. 즉, 일정한 잉크유동간극을 통해 유동하는 잉크의 점도가 높은 경우에는 그 유동속도가 상대적으로 느릴 것이고, 반면에 잉크의 점도가 낮은 경우에는 유동속도가 상대적으로 빠를 것이다. In the present specification and claims, the 'ink flow gap' corresponds to a gap between the first disk member 74 and the second disk member 75 through which ink flows, and according to the viscosity of the ink flowing, its flow rate To change. That is, if the viscosity of the ink flowing through the constant ink flow gap is high, the flow rate will be relatively slow, while if the ink viscosity is low, the flow rate will be relatively fast.
이러한 잉크유동간극은 바람직하게 0.5 ~ 1.5mm 범위로 설정되지만 이것에 한정되지 않고 사용되는 잉크의 종류나 점도, 인쇄장치의 용량 등에 따라서 적절하게 설정될 수 있다. 따라서, 비록 상기 잉크유동간극이 특정 수치로 지정되지 않더라도 당해 기술분야에 속하는 통상의 지식을 가진 자라면 위와 같은 의미로 충분히 이해하고 이를 바탕으로 적용할 수 있으므로 불명료한 용어로 해석될 수 없을 것이다.The ink flow gap is preferably set in the range of 0.5 to 1.5 mm, but is not limited thereto, and may be appropriately set according to the type and viscosity of ink used, the capacity of the printing apparatus, and the like. Therefore, even if the ink flow gap is not designated as a specific value, those of ordinary skill in the art may fully understand and apply the same meaning as above, and thus it may not be interpreted as an unclear term.
잉크유동간극을 형성하는 제1 디스크부재(74)의 하면과 제2 디스크부재(75)의 상면은 매끄러운 평면인 것이 바람직하지만, 경우에 따라서는 굴곡이나 요철도 형성될 수 있다. 또한, 상기 제1 디스크부재(74)와 제2 디스크부재(75) 사이에 서로 대향하는 면적은 3 ~ 200㎠ 범위로 설정될 수 있으나 반드시 이러한 수치로 한정되는 것은 아니다.Although it is preferable that the lower surface of the first disk member 74 and the upper surface of the second disk member 75 forming the ink flow gap are smooth flat surfaces, bending or irregularities may be formed in some cases. In addition, an area facing each other between the first disk member 74 and the second disk member 75 may be set in the range of 3 ~ 200 cm 2, but is not necessarily limited thereto.
또한, 상기 제2 디스크부재(75)의 구성을 상세히 보여주는 도 4를 참조하면, 상기 제2 디스크부재(75)의 가장자리에는 잉크가 통과할 수 있도록 복수의 잉크통과공(77)이 형성되어 있다. 바람직하게, 상기 제2 디스크부재(75)의 상면에는 원형의 완충그루브(78)가 형성되고, 상기 완충그루브(78) 내에 다수의 잉크통과공(77)이 형성된다. 상기 완충그루브(78)는 잉크유동간극을 통과한 잉크가 모여서 일시적으로 머물게 되는 완충공간이다.In addition, referring to FIG. 4 showing the configuration of the second disk member 75 in detail, a plurality of ink passing holes 77 are formed at the edges of the second disk member 75 to allow ink to pass therethrough. . Preferably, a circular buffer groove 78 is formed on an upper surface of the second disk member 75, and a plurality of ink through holes 77 are formed in the buffer groove 78. The buffer groove 78 is a buffer space in which ink passing through the ink flow gap is temporarily stayed.
또 다른 실시예로서, 상기 잉크통과공(77)은 반드시 제2 디스크부재(75)를 관통하도록 형성될 필요는 없으며, 측방향으로 개구부 형태로 형성될 수도 있는 등, 잉크가 상기 잉크유동간극을 통해서 잉크배출공간(S3)으로 유동할 수 있도록 형성되기만 하면 된다.In another embodiment, the ink passage hole 77 is not necessarily formed to penetrate the second disk member 75, and may be formed in the form of an opening in the lateral direction, such that ink may form the ink flow gap. It only needs to be formed to flow through the ink discharge space (S3) through.
또한 상기 제2 디스크부재(75)의 상면은 상기 완충그루브(78)를 경계로 내측의 제1 상면(SF1)과 외측의 제2 상면(SF2)으로 구분되는데, 상기 제1 상면(SF1)의 높이는 제2 상면(SF2)의 높이보다 낮다. 따라서, 도 2에서 보는 바와 같이, 제2 디스크부재(75)의 제2 상면(SF2)은 제1 디스크부재(74)의 하면과 접촉하는 반면, 제2 디스크부재(75)의 제1 상면(SF1)은 제1 디스크부재(74)의 하면과 잉크유동간극 만큼 이격되어 있다.In addition, an upper surface of the second disk member 75 is divided into an inner first upper surface SF1 and an outer second upper surface SF2 on the boundary of the buffer groove 78. The height is lower than the height of the second upper surface SF2. Therefore, as shown in FIG. 2, the second upper surface SF2 of the second disk member 75 is in contact with the lower surface of the first disk member 74, while the first upper surface of the second disk member 75 is formed. SF1) is spaced apart from the lower surface of the first disk member 74 by the ink flow gap.
상기 제2 디스크부재(75)는 제1 디스크부재(74)에 대해서 이격운동할 수 있도록 구성된다. 이를 위해 상기 제2 디스크부재(75)의 하면에는 연장축(79)이 하방으로 연장되어 있으며 여기에 이격용 액츄에이터(80)가 결합된다. 전술한 바와 마찬가지로 상기 이격용 액츄에이터(80)는 솔레노이드 또는 밸브에 의해 작동되는 에어실린더가 바람직하다.The second disk member 75 is configured to be spaced apart from the first disk member 74. To this end, an extension shaft 79 extends downwardly on a lower surface of the second disk member 75, and a spaced apart actuator 80 is coupled thereto. As described above, the spacing actuator 80 is preferably an air cylinder operated by a solenoid or a valve.
또한, 상기 잉크배출공간(S3)에 있는 잉크가 상기 이격용 액츄에이터(80) 부위로 유출되지 못하도록 제2 차단막(81)이 설치된다. In addition, a second blocking film 81 is installed so that ink in the ink discharge space S3 does not flow out to the spaced portion of the actuator 80.
상기 제2 차단막(81) 역시 전술한 바와 마찬가지로 원형을 이루며 그 중심부는 제2 디스크부재(75)의 연장축(79)에 실링 결합되고, 외주부는 도 2에 도시된 바와 같이 하우징의 몸체(61)와 하단 덮개(63) 사이에 개재된 채로 실링 결합된다. The second blocking film 81 is also circular as described above, the center portion of which is sealed to the extension shaft 79 of the second disk member 75, the outer peripheral portion of the housing body 61 as shown in FIG. ) And the lower cover 63 is interposed between the sealing coupling.
상기 제2 차단막(81)은 제2 디스크부재(75)의 이격운동을 방해하지 않도록 합성수지와 같이 유연성 있는 소재 또는 소정 범위의 변형이 가능한 소재로 제작되며, 환형의 주름(82)을 형성할 수도 있다.The second blocking film 81 is made of a flexible material such as synthetic resin or a material that can be deformed in a predetermined range so as not to hinder the spaced movement of the second disk member 75, and may form an annular pleat 82. have.
본 발명의 바람직한 실시예에 따르면 잉크유입구(72)를 통해 유입되는 잉크와 용매유입공간(S1)에서 투입된 용매(110)의 상호 혼합을 촉진하기 위해서 믹싱부재(83)가 더 구비될 수 있다.According to a preferred embodiment of the present invention, a mixing member 83 may be further provided to promote mutual mixing of the ink flowing through the ink inlet 72 and the solvent 110 introduced into the solvent inlet space S1.
상기 믹싱부재(83)는 잉크혼합공간(S2) 내에 설치되며 바람직하게 상기 제1 디스크부재(74)의 개구부(76) 상에 설치된다.The mixing member 83 is installed in the ink mixing space S2 and is preferably installed on the opening 76 of the first disk member 74.
상기 믹싱부재(83)의 상단은 폐쇄되어 있고 측면에는 복수의 관통공(84)이 형성되어 있어서, 상기 밸브공(66)을 통해 유입된 용매(110)가 믹싱부재(83)의 상단에 부딪혀 측방향으로 경로가 변형되면서 잉크혼합공간(S2) 내의 잉크와 골고루 섞이게 된다.The upper end of the mixing member 83 is closed and a plurality of through-holes 84 are formed at the side, so that the solvent 110 introduced through the valve hole 66 hits the upper end of the mixing member 83. As the path is deformed laterally, it is evenly mixed with the ink in the ink mixing space S2.
한편, 상기 저장탱크(10) 내에 담긴 잉크는 펌핑수단에 의해 저장탱크(10)로부터 인쇄용기(30)로 공급되는데 상기 펌핑수단은 도 1에 도시된 바와 같이 점도 조절기(50)의 하류측에 있는 공급통로(46) 상에 설치된 펌프(120)와 상기 펌프를 구동시키는 구동모터(140)를 포함한다.On the other hand, the ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing vessel 30 by a pumping means, the pumping means is downstream of the viscosity regulator 50 as shown in FIG. It includes a pump 120 installed on the supply passage 46 and a drive motor 140 for driving the pump.
비록 본 실시예에서는 펌핑수단이 점도 조절기(50)의 하류에 설치되었으나 또 다른 대안으로서 잉크 점도 조절기의 상류측에 있는 공급경로 상에 설치되어도 무방하다.Although the pumping means is provided downstream of the viscosity regulator 50 in this embodiment, as an alternative, it may be provided on a supply path upstream of the ink viscosity regulator.
상기 펌프(120)의 회전축(121)은 구동모터(140)의 구동축(141)과 커플링되어 있어서, 구동모터(140)의 회전에 따라서 펌프(120)가 작동하여 잉크를 유동시키게 된다. 바람직하게, 상기 구동모터(140)는 에어로 구동되는 에어펌프로 구성될 수 있으나 반드시 이것에 한정되는 것은 아니다.The rotating shaft 121 of the pump 120 is coupled to the driving shaft 141 of the driving motor 140, so that the pump 120 operates to flow ink according to the rotation of the driving motor 140. Preferably, the drive motor 140 may be configured as an air pump driven by air, but is not necessarily limited thereto.
상기 펌프(120)로는 회전축을 가지는 다양한 펌프가 채용될 수 있는데, 바람직하게는 한 쌍의 기어가 서로 맞물려서 회전하는 기어 펌프가 채용된다.Various pumps having a rotating shaft may be used as the pump 120. Preferably, a gear pump in which a pair of gears are engaged with each other and rotates is employed.
본 발명에 따르면, 잉크의 점도 변화는 상기 회전축(121) 또는 구동축(141)의 회전수를 측정하는 센싱수단에 의해 이루어지는데, 구체적으로 상기 센싱수단은 상기 펌프(120)의 회전축(121) 또는 구동모터(140)의 구동축(141)에 결합되는 피감지체(85)와, 상기 피감지체(85)를 감지하는 센서(86)를 포함한다.According to the present invention, the viscosity change of the ink is made by the sensing means for measuring the rotational speed of the rotary shaft 121 or the drive shaft 141, specifically, the sensing means is the rotary shaft 121 of the pump 120 or The sensing object 85 coupled to the driving shaft 141 of the driving motor 140 includes a sensor 86 that senses the sensing object 85.
상기 피감지체(85)는 회전축(121) 또는 구동축(141)의 회전수를 측정하기 위한 것으로서 자석, 철 또는 플라스틱 자석 등으로 구성될 수 있다.The sensing object 85 is for measuring the rotation speed of the rotation shaft 121 or the driving shaft 141 and may be made of a magnet, iron, or plastic magnet.
본 발명에 따르면, 피감지체(85)가 점도 조절기(50)의 하우징 내부에 마련되지 않고 외부에 구비되어 있으므로 회전시 잉크와의 마찰력이 없을 뿐만 아니라, 잉크 내에 함유된 철 등의 불순물이 상기 피감지체(85)에 부착되는 것도 방지된다.According to the present invention, since the sensing object 85 is not provided inside the housing of the viscosity regulator 50 but is provided outside, there is no frictional force with the ink during rotation, and impurities such as iron contained in the ink are detected. Attachment to the retardation 85 is also prevented.
상기 센서(86)는 예컨대, 피감지체(85)의 자장 변화를 감지함으로써 회전수를 측정하게 된다. 상기 센서(86)는 구동모터(140)나 펌프케이스(124) 또는 그 외 프레임 상에 설치될 수 있다.The sensor 86 measures the rotation speed by, for example, detecting a change in the magnetic field of the sensing object 85. The sensor 86 may be installed on the driving motor 140, the pump case 124, or another frame.
그러면, 상기와 같은 구성을 가진 본 발명의 바람직한 실시예에 따른 잉크 점도 조절 장치의 동작에 대해서 살펴보기로 한다.Then, the operation of the ink viscosity control device according to a preferred embodiment of the present invention having the configuration as described above will be described.
전술한 구동모터(140)가 동작하면 그에 따라 펌프(120)가 구동되면서 저장탱크(10) 내에 담겨 있던 잉크는 공급통로(44)(46))를 통해 공급된다.When the above-described driving motor 140 operates, the pump 120 is driven accordingly, and the ink contained in the storage tank 10 is supplied through the supply passages 44 and 46.
상기와 같이 펌핑수단에 의해 유동하는 잉크는 도 2에 도시된 바와 같이 공급통로(44)를 통해 점도 조절기(50)의 하우징 내부의 잉크혼합공간(S2)으로 유입된다.Ink flowing by the pumping means as described above is introduced into the ink mixing space (S2) inside the housing of the viscosity regulator 50 through the supply passage 44 as shown in FIG.
상기 잉크혼합공간(S2)으로 유입된 잉크는 화살표로 도시된 것과 같이 믹싱부재(83)의 관통공(84)을 거쳐 제1 디스크부재(74)의 개구부(76)를 통과하며, 이어서, 잉크유동간극만큼 이격되어 있는 제1 디스크부재(74)와 제2 디스크부재(75) 사이를 통과하여 제2 디스크부재(75)의 상면에 형성된 완충그루브(78)에 도달하게 된다. 그런 다음, 잉크는 완충그루브(78)에 형성된 복수의 잉크통과공(77)을 통해 잉크배출공간(S3)으로 빠져나간다. 그리고 잉크배출공간(S3)으로 빠져나간 잉크는 다시 잉크배출구(73)로 배출된다.The ink flowing into the ink mixing space S2 passes through the opening 76 of the first disk member 74 via the through hole 84 of the mixing member 83 as shown by the arrow, and then ink Passing between the first disk member 74 and the second disk member 75 spaced apart by the flow gap to reach the buffer groove 78 formed on the upper surface of the second disk member (75). Then, the ink exits to the ink discharge space S3 through the plurality of ink through holes 77 formed in the buffer groove 78. Then, the ink exiting into the ink discharge space S3 is discharged to the ink discharge port 73 again.
이러한 과정 동안 펌프(120)의 회전축(121) 또는 구동모터(140)의 구동축(141)은 회전하게 되며, 이때 축에 결합된 피감지체(85)도 동일한 속도로 회전하게 된다. 그러면, 상기 센서(86)가 피감지체(85)를 감지함으로써 회전수를 측정할 수 있게 된다.During this process, the rotating shaft 121 of the pump 120 or the driving shaft 141 of the driving motor 140 rotates, and the sensing object 85 coupled to the shaft also rotates at the same speed. Then, the sensor 86 can measure the rotation speed by detecting the sensing object 85.
회전수가 측정되면, 이로부터 잉크의 점도는 유체역학의 공식에 따라 계산될 수 있다. 예를 들어, 잉크의 점도가 증가하면 상기 제1 및 제2 디스크부재(74)(75) 사이의 잉크유동간극을 통과하는 잉크의 유동속도는 저하되므로 이에 따라 회전축의 회전수는 감소하게 될 것이다. 이러한 계산법은 이미 당해 분야에서 널리 알려진 이론적인 것이므로 상세한 설명은 생략하기로 한다.Once the speed of rotation is measured, the viscosity of the ink can be calculated according to the formula of hydrodynamics. For example, if the viscosity of the ink is increased, the flow rate of the ink passing through the ink flow gap between the first and second disk members 74 and 75 is lowered, and thus the rotation speed of the rotating shaft will be reduced accordingly. . Since this calculation method is already well known in the art, detailed description thereof will be omitted.
본 발명에 따르면, 상기 피감지체(85)는 잉크와 접촉하지 않도록 잉크 점도 조절기 외부의 회전축(구동축)에 설치되므로 잉크 내에 존재하는 철분 등의 각종 이물질이 흡착될 염려가 없어서 영구적인 동작 신뢰성을 보장한다.According to the present invention, since the sensing object 85 is installed on a rotating shaft (drive shaft) outside the ink viscosity controller so as not to come into contact with ink, there is no fear that various foreign substances such as iron present in the ink are adsorbed, thereby ensuring permanent operation reliability. do.
또한 본 발명에서는 잉크의 점도에 따라 회전축(구동축)에 걸리는 부하의 변화를 직접적으로 측정하기 때문에 점도 측정 정밀성을 높일 수 있는 이점이 있다.In addition, in the present invention, since the change in the load applied to the rotating shaft (drive shaft) is measured directly according to the viscosity of the ink, there is an advantage in that the viscosity measurement accuracy can be improved.
만약 측정된 결과, 상기 회전축(구동축)의 회전수가 기준값이하로 감속할 경우에는 잉크의 점도가 소정의 기준 범위를 초과하는 것이므로 그러한 신호는 미도시된 제어부로 전송되고, 그러면 제어부는 상기 밸브용 액츄에이터(69)를 동작시켜 도 5에 도시된 바와 같이 밸브부재(67)를 후퇴시킨다.If the result of the measurement indicates that the rotation speed of the rotating shaft (drive shaft) decreases below a reference value, since the viscosity of the ink exceeds a predetermined reference range, such a signal is transmitted to a control unit not shown, and the control unit then operates the valve actuator. Operation 69 causes the valve member 67 to be retracted as shown in FIG.
이에 따라, 차단부재(65)의 밸브공(66)이 개방됨으로써 용매유입공간(S1) 내에 있던 용매(110)가 잉크혼합공간(S2)으로 투입되어 잉크와 혼합되게 된다. 바람직하게, 믹싱부재(83)가 구비될 경우에는 용매(110)가 믹싱부재(83)에 부딪혀 경로가 변형됨으로써 잉크와의 혼합이 더욱 촉진될 수 있다. 이렇게 용매(110)와 혼합된 잉크는 희석되어 적절한 점도를 유지할 수 있다.As a result, the valve hole 66 of the blocking member 65 is opened, so that the solvent 110 in the solvent inflow space S1 is introduced into the ink mixing space S2 and mixed with the ink. Preferably, when the mixing member 83 is provided, the solvent 110 collides with the mixing member 83 to deform the path, thereby further facilitating mixing with the ink. The ink mixed with the solvent 110 may be diluted to maintain an appropriate viscosity.
본 발명의 잉크 점도 조절기는 청소 및 세척이 필요한 경우에 덮개를 열고 내부 부품을 꺼집어 낼 필요없이 동작 상태에서 세척이 가능하다. The ink viscosity regulator of the present invention can be cleaned in the operating state without the need to open the cover and take out the internal parts when cleaning and cleaning is required.
구체적으로, 청소가 필요한 상황에서는, 도 6에 도시된 바와 같이 이격용 액츄에이터(80)를 동작시켜 제2 디스크부재(75)를 후퇴시킨다. 그러면, 제2 디스크부재(75)가 하방으로 후퇴하여 제1 디스크부재(74)로부터 멀어지면서, 제1 디스크부재(74)와 제2 디스크부재(75) 사이의 간격이 상대적으로 넓어지게 된다. Specifically, in a situation in which cleaning is necessary, the second actuator 80 is retracted by operating the spacer actuator 80 as shown in FIG. 6. Then, as the second disk member 75 retreats downward and away from the first disk member 74, the distance between the first disk member 74 and the second disk member 75 becomes relatively wider.
이에 따라, 상대적으로 많은 양의 잉크가 제1 디스크부재(74)와 제2 디스크부재(75) 사이를 유동하게 되므로 동작 중에 틈새에 흡착되어 있던 잉크 찌꺼기 등이 함께 쓸려가면서 제거될 수 있다.Accordingly, since a relatively large amount of ink flows between the first disk member 74 and the second disk member 75, the ink residues adsorbed in the gap during the operation can be removed while being swept away.
이어서 세척작업이 끝나면, 다시 이격용 액츄에이터(80)를 동작시켜 제2 디스크부재(75)를 제1 디스크부재(74) 쪽으로 접근시켜 잉크유동간극을 유지시킨다.Subsequently, when the cleaning operation is finished, the spaced apart actuator 80 is operated again to approach the second disk member 75 toward the first disk member 74 to maintain the ink flow gap.
도 7 내지 도 9에는 본 발명의 또 다른 실시예에 따른 잉크 점도 조절기의 구성이 도시되어 있다. 여기서, 앞서 도시된 도면에서와 동일한 참조부호는 동일한 부재를 가리킨다.7 to 9 show the configuration of the ink viscosity regulator according to another embodiment of the present invention. Here, the same reference numerals as in the above-described drawings indicate the same members.
본 실시예에 따른 차단부재(65')의 중심에는 밸브공(66')이 형성되어 있으며, 상기 밸브공(66')의 주위에는 원형 그루브(87)가 형성되어 있다.A valve hole 66 'is formed at the center of the blocking member 65' according to the present embodiment, and a circular groove 87 is formed around the valve hole 66 '.
상기 원형 그루브(87) 내에는 바람직하게 고무링과 같은 실링부재(88)가 안착된다.Inside the circular groove 87 a sealing member 88, preferably a rubber ring, is seated.
또한, 상기 원형 그루브(87)의 외측에는 용매(110)가 유입되는 유입홈(89)이 형성되어 있는데, 상기 유입홈(89)은 원형 그루브(87)와 연결되어 있다.In addition, an inlet groove 89 through which the solvent 110 flows is formed outside the circular groove 87, and the inlet groove 89 is connected to the circular groove 87.
상기 원형 그루브(87)와 밸브공(66')은 연결 그루브(90)에 의해 서로 연결되도록 구성된다.The circular groove 87 and the valve hole 66 ′ are configured to be connected to each other by the connecting groove 90.
상기 밸브공(66)을 개폐하는 밸브부재(67')의 단부에는 상기 원형 그루브(87)에 상응하는 원형 돌출부(91)가 형성되어 있다.A circular protrusion 91 corresponding to the circular groove 87 is formed at an end portion of the valve member 67 ′ that opens and closes the valve hole 66.
따라서, 용매(110)는 상기 유입홈(89)과 원형 그루브(87)를 거쳐 연결 그루브(90)를 따라 밸브공(66')으로 공급될 수 있다.Therefore, the solvent 110 may be supplied to the valve hole 66 ′ along the connection groove 90 through the inlet groove 89 and the circular groove 87.
상기 밸브공(66')을 폐쇄할 경우에는, 상기 밸브부재(67')의 원형 돌출부(91)가 차단부재(65')의 원형 그루브(87)에 결합되면서 실링부재(88)를 눌러 용매(110)의 유입을 차단하게 된다.When the valve hole 66 'is closed, the circular protrusion 91 of the valve member 67' is coupled to the circular groove 87 of the blocking member 65 'while pressing the sealing member 88 to solvent. Block the flow of (110).
또한 본 실시예에 따르면, 믹싱부재(83')는 차단부재(85')와 제1 디스크부재(74) 사이에 개재되어 마치 스페이서 부재와 같은 기능을 한다. 상기 믹싱부재(83')에는 구획벽(92)이 존재하며, 상기 구획벽(92)을 기준으로 상부와 하부에 각각 관통공(93)(94)이 형성되어 있다.In addition, according to the present embodiment, the mixing member 83 'is interposed between the blocking member 85' and the first disk member 74 to function as a spacer member. Partition walls 92 exist in the mixing member 83 ', and through- holes 93 and 94 are formed at upper and lower sides of the partition wall 92, respectively.
이 경우, 차단부재(65')의 밸브공(66')을 통해 유입된 용매(110)는 상부 관통공(93)을 통해 측방향으로 흩어지면서 유입되는 잉크와 혼합되게 되고, 이어서 용매(110)와 혼합된 잉크는 하부 관통공(94)을 통해 잉크배출공간(S3)으로 유동하게 된다.In this case, the solvent 110 introduced through the valve hole 66 ′ of the blocking member 65 ′ is mixed with the ink introduced while being laterally scattered through the upper through hole 93, and then the solvent 110. ) And the mixed ink flows to the ink discharge space S3 through the lower through hole 94.
상기와 같은 믹싱부재의 구조는 용매(110)와 잉크의 유동경로를 변형시켜 혼합을 촉진한다. 그러나 상기 믹싱부재의 형상과 구조는 본 발명의 실시예에 한정되지 않으며 잉크와 용매(110)가 골고루 혼합될 수 있도록 다양하게 경로를 변형 및 왜곡하는 방식이 적용될 수 있는 것으로 이해되어야 한다.The structure of the mixing member as described above promotes mixing by modifying the flow path of the solvent 110 and the ink. However, the shape and structure of the mixing member is not limited to the embodiment of the present invention, it should be understood that various ways of modifying and distorting the path may be applied so that the ink and the solvent 110 may be evenly mixed.
도 10에는 본 발명의 또 다른 바람직한 실시예에 따른 잉크 점도 조절기가 채용된 인쇄장치의 개략적인 구성이 도식적으로 나타나 있다. 여기서, 앞서 도시된 도면에서와 동일한 참조번호는 동일한 기능을 하는 부재를 가리킨다.Figure 10 schematically shows a schematic configuration of a printing apparatus employing an ink viscosity regulator according to another preferred embodiment of the present invention. Here, the same reference numerals as in the above-described drawings indicate members having the same function.
전술한 실시예에서와 마찬가지로, 저장탱크(10) 내에 담긴 잉크는 펌핑수단의 구동력에 의해 저장탱크(10)로부터 인쇄용기(30)로 공급되며, 상기 인쇄용기(30) 상에는 인쇄롤러(31)와, 상기 인쇄롤러(31)에 접촉하여 회전하는 압동롤러(32)가 설치되어 있다.As in the above-described embodiment, the ink contained in the storage tank 10 is supplied from the storage tank 10 to the printing container 30 by the driving force of the pumping means, and the printing roller 31 on the printing container 30. And a pressure roller 32 which rotates in contact with the printing roller 31.
또한, 상기 저장탱크(10)에서 인쇄용기(30)에 이르는 잉크의 유동경로 상에는 점도 조절기(50')가 설치된다. 상기 점도 조절기(50')는 유동경로를 따라 유동하는 잉크의 유속을 점도에 따라서 변화시키는 역할을 한다.In addition, a viscosity controller 50 ′ is installed on the flow path of the ink from the storage tank 10 to the printing container 30. The viscosity regulator 50 'serves to change the flow rate of the ink flowing along the flow path according to the viscosity.
이러한 점도 조절기(50')의 구성이 도 11에 상세히 도시되어 있다. 여기서, 앞서 도시된 도면에서와 동일한 참조번호는 동일한 기능을 하는 부재를 가리킨다.The configuration of this viscosity regulator 50 'is shown in detail in FIG. Here, the same reference numerals as in the above-described drawings indicate members having the same function.
본 실시예에 따른 점도 조절기(50')는 몸체(61)와 상단덮개(62) 및 하단덮개(63)로 구성된 하우징을 포함한다. Viscosity regulator 50 ′ according to the present embodiment includes a housing composed of a body 61, an upper cover 62, and a lower cover 63.
또한, 상기 하우징은 잉크유입공간(S1')과 잉크배출공간(S2')으로 구성된 내부 공간을 가진다. 상기 잉크유입공간(S1')은 저장탱크(10)로부터 하우징 내부로 잉크가 유입되는 공간이며, 상기 잉크배출공간(S2')은 후술하는 바와 같이 잉크유속변환수단을 통과한 잉크가 모여서 배출되는 공간이다.In addition, the housing has an internal space consisting of an ink inflow space (S1 ') and an ink discharge space (S2'). The ink inflow space S1 ′ is a space in which ink is introduced into the housing from the storage tank 10, and the ink discharge space S2 ′ is discharged by collecting the ink passing through the ink flow rate converting means as described later. Space.
상기 잉크유입공간(S1')과 잉크배출공간(S2')에는 각각 잉크유입구(72)와 잉크배출구(73)가 형성되어 있으며, 이들은 각각 저장탱크(10)로부터 연장되는 공급통로(44) 및 인쇄용기(30)로 향하는 공급통로(46)와 연결되어 있다.An ink inlet 72 and an ink outlet 73 are formed in the ink inlet space S1 'and the ink outlet space S2', respectively, which are supplied from the supply passage 44 extending from the storage tank 10, respectively. It is connected to the supply passage 46 to the printing vessel (30).
상기 잉크유입공간(S1')과 잉크배출공간(S2') 사이에는 잉크유입공간(S1')에서 잉크배출공간(S2')으로 유동하는 잉크가 점도에 따라서 속도가 변하도록 하는 잉크유속변환수단이 설치된다.Ink flow rate converting means for changing the speed of the ink flowing from the ink inlet space S1 'to the ink discharge space S2' between the ink inflow space S1 'and the ink discharge space S2' according to the viscosity. This is installed.
전술한 실시예에서와 마찬가지로, 상기 잉크유속변환수단은 잉크유입공간(S1')과 잉크배출공간(S2') 사이에 설치되는 제1 디스크부재(74)와 제2 디스크부재(75)를 포함한다. As in the above-described embodiment, the ink flow rate converting means includes a first disk member 74 and a second disk member 75 provided between the ink inflow space S1 'and the ink discharge space S2'. do.
상기 제1 디스크부재(74)의 중심에는 개구부(76)가 형성되어 있으며, 제2 디스크부재(75)는 제1 디스크부재(74)에 대해 소정의 '잉크유동간극'만큼 이격되어 있다.An opening 76 is formed at the center of the first disk member 74, and the second disk member 75 is spaced apart from the first disk member 74 by a predetermined 'ink flow gap'.
상기 제2 디스크부재(75)는 액츄에이터(80)에 의해 제1 디스크부재(74)에 대해서 이격운동할 수 있도록 구성된다.The second disk member 75 is configured to be spaced apart from the first disk member 74 by the actuator 80.
또한, 상기 잉크배출공간(S2')에 있는 잉크가 상기 액츄에이터(80) 부위로 유출되지 못하도록 차단막(81)이 설치된다.In addition, a blocking film 81 is provided to prevent the ink in the ink discharge space S2 'from flowing out to the actuator 80.
본 실시예에서도 잉크유입구(72)를 통해 유입되는 잉크를 골고루 산포시키기 위해 믹싱부재(83)를 선택적으로 더 구비할 수 있다.In this embodiment, the mixing member 83 may be further selectively provided to evenly distribute the ink flowing through the ink inlet 72.
본 실시예에 따르면, 용매(110)는 잉크의 유동경로 상으로 직접 공급되는데, 이를 위해 용매(110)를 저장하는 저장용기(20)의 용매공급관(42)은 잉크의 공급통로(44 또는 46)에 연결되어 용매(110)를 공급하도록 구성된다.According to the present embodiment, the solvent 110 is directly supplied onto the flow path of the ink. For this purpose, the solvent supply pipe 42 of the storage container 20 storing the solvent 110 is provided with the ink supply passage 44 or 46. And supply solvent 110).
상기 용매공급관(42)에는 밸브(43)가 구비되어 있어서, 미도시된 제어부에 의한 제어에 의해 용매공급관(42)을 개폐한다.The solvent supply pipe 42 is provided with a valve 43 to open and close the solvent supply pipe 42 by control by a controller not shown.
본 실시예에 따른 잉크 점도 조절 장치의 동작을 살펴보면, 구동모터(140)의 동작에 따라 펌프(120)가 작동하면서 저장탱크(10) 내에 담겨 있던 잉크는 공급통로(44)(46))를 통해 공급된다. 이때, 용매공급관(42)의 밸브(43)는 폐쇄된 상태이다. Looking at the operation of the ink viscosity control device according to the present embodiment, the ink contained in the storage tank 10 while the pump 120 is operated in accordance with the operation of the drive motor 140 is the supply passage (44, 46)) Supplied through. At this time, the valve 43 of the solvent supply pipe 42 is closed.
이에 따라, 잉크는 공급통로(44)를 통해 점도 조절기(50')의 하우징 내부의 잉크유입공간(S1')으로 유입된 후, 도 11에서 화살표로 도시된 것과 같이 믹싱부재(83)의 관통공(84)을 거쳐 제1 디스크부재(74)의 개구부(76)를 통과하며, 이어서, 잉크유동간극만큼 이격되어 있는 제1 디스크부재(74)와 제2 디스크부재(75) 사이를 통과하여 제2 디스크부재(75)의 상면에 형성된 완충그루브(78)에 도달하게 된다. 그런 다음, 잉크는 완충그루브(78)에 형성된 복수의 잉크통과공(77)을 통해 잉크배출공간(S2')으로 빠져나간다. 그리고 잉크배출공간(S2')으로 빠져나간 잉크는 다시 잉크배출구(73)로 배출된다. Accordingly, the ink flows into the ink inflow space S1 ′ inside the housing of the viscosity regulator 50 ′ through the supply passage 44, and then penetrates the mixing member 83 as shown by arrows in FIG. 11. It passes through the opening 76 of the first disk member 74 via the hole 84, and then passes between the first disk member 74 and the second disk member 75 spaced by the ink flow gap, The buffer groove 78 formed on the upper surface of the second disk member 75 is reached. Then, the ink exits to the ink discharge space S2 'through the plurality of ink through holes 77 formed in the buffer groove 78. Then, the ink exiting into the ink discharge space S2 'is discharged to the ink discharge port 73 again.
이 과정에서 잉크의 점도가 증가하면 상기 제1 및 제2 디스크부재(74)(75) 사이의 잉크유동간극을 통과하는 잉크의 유동속도는 저하되므로, 펌프(120)의 회전축(121) 또는 구동모터(140)의 구동축(141)의 회전수는 감소하게 될 것이다.In this process, when the viscosity of the ink increases, the flow rate of the ink passing through the ink flow gap between the first and second disk members 74 and 75 decreases, so that the rotation shaft 121 or the drive of the pump 120 is performed. The rotation speed of the drive shaft 141 of the motor 140 will be reduced.
이러한 신호는 미도시된 제어부로 전송되고, 그러면 상기 제어부는 밸브(43)를 개방하도록 동작시켜 용매공급관(42)을 통해 용매(110)가 공급통로(44)로 공급되도록 함으로써 잉크를 희석하게 된다.This signal is transmitted to a controller not shown, and the controller operates to open the valve 43 so that the solvent 110 is supplied to the supply passage 44 through the solvent supply pipe 42 to dilute the ink. .
한편, 본 실시예에 따른 잉크 점도 조절기에 있어서 청소 및 세척을 하는 동작은 전술한 실시예에서와 동일하다. 즉, 액츄에이터(80)를 동작시켜 제2 디스크부재(75)를 하방으로 후퇴시키면서 제1 디스크부재(74)와 제2 디스크부재(75) 사이의 간격을 상대적으로 넓힌다.On the other hand, the operation of cleaning and cleaning in the ink viscosity regulator according to this embodiment is the same as in the above-described embodiment. That is, the distance between the first disk member 74 and the second disk member 75 is relatively widened while the actuator 80 is operated to retreat the second disk member 75 downward.
이에 따라, 상대적으로 많은 양의 잉크가 제1 디스크부재(74)와 제2 디스크부재(75) 사이를 유동하게 되므로 동작 중에 틈새에 흡착되어 있던 잉크 찌꺼기 등이 함께 쓸려가면서 제거될 수 있다.Accordingly, since a relatively large amount of ink flows between the first disk member 74 and the second disk member 75, the ink residues adsorbed in the gap during the operation can be removed while being swept away.
이어서 세척작업이 끝나면, 다시 액츄에이터(80)를 동작시켜 제2 디스크부재(75)를 제1 디스크부재(74) 쪽으로 접근시켜 잉크유동간극을 유지시킨다.Subsequently, when the cleaning operation is finished, the actuator 80 is operated again to approach the second disk member 75 toward the first disk member 74 to maintain the ink flow gap.

Claims (11)

  1. 인쇄장치에서 잉크의 유동경로 상에 설치되어 잉크의 점도를 조절하는 잉크 점도 조절 장치에 있어서,An ink viscosity adjusting device installed on a flow path of ink in a printing apparatus to adjust the viscosity of ink,
    용매가 유입되는 용매유입구가 형성된 용매유입공간(S1)과, 잉크가 유입되는 잉크유입구가 형성된 잉크혼합공간(S2)과, 잉크가 배출되는 잉크배출구가 형성된 잉크배출공간(S3)을 가지는 하우징;A housing having a solvent inlet space (S1) having a solvent inlet through which a solvent is introduced therein, an ink mixing space (S2) having an ink inlet therein through which ink is introduced, and an ink discharge space (S3) having an ink outlet thereon through which ink is discharged;
    상기 용매유입공간(S1)과 잉크혼합공간(S2) 사이에 설치된 차단부재;A blocking member installed between the solvent inflow space S1 and the ink mixing space S2;
    상기 차단부재에 구비되어 상기 용매유입공간(S1)과 잉크혼합공간(S2)을 상호 단속적으로 소통시킴으로써 상기 용매유입공간(S1)의 용매가 상기 잉크혼합공간(S2)으로 투입되도록 하는 밸브수단; 및Valve means which is provided in the blocking member so that the solvent inflow space (S1) and the ink mixing space (S2) intermittently communicate with each other so that the solvent of the solvent inflow space (S1) is introduced into the ink mixing space (S2); And
    상기 잉크혼합공간(S2)으로부터 상기 잉크배출공간(S3)으로 유동하는 잉크의 점도에 따라서 잉크의 유동속도가 변화되도록 하는 잉크유속변환수단을 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.And ink flow rate converting means for changing the flow rate of the ink according to the viscosity of the ink flowing from the ink mixing space (S2) to the ink discharge space (S3).
  2. 제1항에 있어서,The method of claim 1,
    상기 밸브수단은,The valve means,
    상기 차단부재에 형성된 밸브공을 선택적으로 개폐하는 밸브부재를 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.Ink viscosity control device comprising a valve member for selectively opening and closing the valve hole formed in the blocking member.
  3. 제2항에 있어서,The method of claim 2,
    상기 밸브부재를 상기 차단부재에 대해서 이격운동시키는 밸브용 액츄에이터를 더 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.Ink viscosity control device further comprises a valve actuator for moving the valve member with respect to the blocking member.
  4. 제1항에 있어서,The method of claim 1,
    상기 용매유입공간(S1)에서 상기 잉크혼합공간(S2)으로 유입되는 용매가 부딪혀 그 경로가 변형되는 믹싱부재를 더 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.The ink viscosity adjusting device, characterized in that it further comprises a mixing member in which the solvent is introduced into the ink mixing space (S2) in the solvent inlet space (S1) hit the deformation of the path.
  5. 인쇄장치에서 잉크의 유동경로 상에 설치되어 잉크의 점도를 조절하는 잉크 점도 조절 장치에 있어서,An ink viscosity adjusting device installed on a flow path of ink in a printing apparatus to adjust the viscosity of ink,
    잉크가 유입되는 잉크유입구가 형성된 잉크유입공간(S1')과, 잉크가 배출되는 잉크배출구가 형성된 잉크배출공간(S2')을 가지는 하우징;A housing having an ink inlet space (S1 ') having an ink inlet through which ink is introduced therein and an ink outlet space (S2') having an ink outlet formed therein;
    상기 잉크유입공간(S1')과 잉크배출공간(S2') 사이에 설치되어, 상기 잉크유입공간(S1')으로부터 상기 잉크배출공간(S2')으로 유동하는 잉크의 점도에 따라서 잉크의 유동속도가 변화되도록 하는 잉크유속변환수단;The flow rate of the ink is provided between the ink inflow space (S1 ') and the ink discharge space (S2'), depending on the viscosity of the ink flowing from the ink inflow space (S1 ') to the ink discharge space (S2') Ink flow rate converting means for causing a change;
    용매가 저장된 저장용기(20);A storage container 20 in which a solvent is stored;
    상기 저장용기의 용매를 상기 잉크와 혼합되도록 공급하는 용매공급관(42); 및A solvent supply pipe 42 for supplying a solvent of the storage container to be mixed with the ink; And
    상기 용매공급관(42)을 개폐하는 밸브(43);를 포함하고,Includes; valve 43 for opening and closing the solvent supply pipe 42,
    상기 잉크유속변환수단을 통과한 잉크의 유동속도가 기준값이하로 감소할 경우에는 상기 밸브(43)를 개방하여 상기 용매가 공급되도록 하는 것을 특징으로 하는 잉크 점도 조절 장치.And the solvent is supplied by opening the valve (43) when the flow velocity of the ink passing through the ink flow rate converting means is lower than or equal to the reference value.
  6. 제1항 또는 제5항에 있어서,The method according to claim 1 or 5,
    상기 잉크유속변환수단은, The ink flow rate converting means,
    잉크유동간극만큼 상호 이격되어 그 사이로 잉크가 통과하는 제1 및 제2 디스크부재를 포함하고,First and second disk members spaced apart from each other by an ink flow gap, and through which ink passes;
    상기 제2 디스크부재는 상기 제1 디스크부재에 대해서 이격 운동가능하도록 구성된 것을 특징으로 하는 잉크 점도 조절 장치.And the second disk member is configured to be spaced apart from the first disk member.
  7. 제6항에 있어서,The method of claim 6,
    상기 제1 디스크부재의 중심에는 잉크가 통과하는 개구부가 형성되고,An opening through which ink passes is formed in the center of the first disk member,
    상기 제2 디스크부재의 가장자리에는 원형의 완충그루부 및 상기 완충그루부 내에 잉크가 통과할 수 있도록 복수의 잉크통과공이 형성된 것을 특징으로 하는 잉크 점도 조절 장치.An ink viscosity adjusting device, characterized in that a circular buffer groove portion and a plurality of ink passing holes are formed at the edge of the second disk member to allow ink to pass through the buffer groove portion.
  8. 제7항에 있어서,The method of claim 7, wherein
    상기 제2 디스크부재는 상기 완충그루브를 경계로 내측의 제1 상면과 외측의 제2 상면을 포함하고,The second disk member includes an inner first upper surface and an outer second upper surface at the boundary of the buffer groove,
    상기 제1 상면의 높이는 제2 상면의 높이보다 낮으며,The height of the first upper surface is lower than the height of the second upper surface,
    상기 제2 상면은 상기 제1 디스크부재의 하면과 접촉하는 반면, 상기 제1 상면은 제1 디스크부재의 하면과 잉크유동간극만큼 이격되도록 구성된 것을 특징으로 하는 잉크 점도 조절 장치.The second upper surface is in contact with the lower surface of the first disk member, whereas the first upper surface is configured to be spaced apart from the lower surface of the first disk member by the ink flow gap.
  9. 제6항에 있어서,The method of claim 6,
    상기 제2 디스크부재(75)를 이격운동시키는 이격용 액츄에이터(80); 및A spacing actuator (80) for spacing the second disk member (75); And
    상기 잉크배출공간에 있는 잉크가 상기 이격용 액츄에이터(80) 부위로 유출되지 못하도록 상기 제2 디스크부재에 실링 결합되는 차단막(81);을 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.And a blocking film 81 sealingly coupled to the second disk member so that ink in the ink discharge space does not flow out to the spaced portion of the actuator 80. Ink viscosity control device characterized in that.
  10. 제1항 또는 제5항에 있어서,The method according to claim 1 or 5,
    상기 잉크의 유동경로 상에 설치되어 잉크를 유동시키는 펌프; A pump installed on a flow path of the ink to flow ink;
    상기 펌프를 구동시키는 구동모터; 및A drive motor for driving the pump; And
    상기 펌프의 회전축 또는 상기 구동모터의 구동축의 회전수를 측정하는 센싱수단:을 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.And a sensing means for measuring the rotational speed of the rotational shaft of the pump or the driving shaft of the driving motor.
  11. 제10항에 있어서,The method of claim 10,
    상기 센싱수단은, The sensing means,
    상기 펌프의 회전축 또는 상기 구동모터의 구동축에 설치된 피감지체; 및A sensing object provided on a rotating shaft of the pump or a driving shaft of the driving motor; And
    상기 피감지체를 감지하는 센서;를 포함하는 것을 특징으로 하는 잉크 점도 조절 장치.And a sensor for sensing the sensing object.
PCT/KR2009/005324 2008-09-22 2009-09-18 Ink viscosity regulating apparatus WO2010032984A2 (en)

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KR20080092553 2008-09-22
KR10-2008-0092553 2008-09-22
KR1020090039587A KR101039494B1 (en) 2008-09-22 2009-05-07 Apparatus for regulating viscosity of ink
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CN113316519A (en) * 2019-01-30 2021-08-27 惠普发展公司，有限责任合伙企业 Transporting and mixing ink for printing
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