JP2018083156A - Coating material charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating material charging device capable of elongating a life of a gate valve by reducing the number of times of operations of the gate valve.SOLUTION: A coating material charging device 2 is formed of a common passage 15 with which a coating material passage 13 and a washing fluid passage 14 are communicated. On a communication portion with the coating material passage 13 and the common passage 15, a coating material supply valve 41 is arranged and, on a communication portion with the washing fluid passage 14 and the common passage 15, an upstream side valve 42 and a downstream side valve 43 are arranged. Further, on the upstream side of the gate valve 49, the coating material supply valve 41 and the upstream side valve 42 are arranged and, on the downstream side of the gate valve 49, the coating material supply valve 41 and the downstream side valve 43 are arranged. Therein, the coating material charging device 2 opens the upstream side valve 42 or the downstream side valve 43 upon color change, supplies washing fluid and washes away coating material remaining in the common passage 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a paint filling apparatus for filling a paint cartridge with paint.

  2. Description of the Related Art Conventionally, in a coating system that coats an object to be coated such as an automobile body, high-quality coating is required, and thus an electrostatic coating machine excellent in coating efficiency and smoothness of a coating film has been used. As this electrostatic coating machine, a coating machine has been put into practical use in which a paint cartridge is mounted on the main body of the coating machine and filled with a predetermined amount of paint extruding liquid to extrude the paint in the paint cartridge and perform coating. Yes.

  By the way, when performing color-changing painting of a plurality of colors corresponding to an automobile body as in an automobile body painting line, a paint cartridge corresponding to the paint color of the automobile body is mounted on the electrostatic coating machine. Then, the paint cartridge whose paint is emptied after the painting is finished is mounted on the paint filling apparatus 100 shown in FIG. 3, for example, and is filled with the paint.

  The paint filling apparatus 100 is provided with an apparatus main body 103 having a common path 102 through which a plurality of paint paths 101 provided for each of a plurality of colors of paints are communicated, and an upper end of the apparatus main body 103, and a paint cartridge 104 is mounted. A connecting portion 105 and a plurality of paint supply valves 106 arranged at a communication portion between the paint path 101 and the common path 102 are provided. In the paint filling apparatus 100, when any one of the plurality of paint supply valves 106 is opened, a predetermined color of paint corresponding to the opened paint supply valve 106 flows into the common path 102, and the paint cartridge 104 The paint bag 107 is filled.

  Further, the apparatus main body 103 is provided with a cleaning fluid supply valve 108 for supplying a cleaning fluid to the lower end portion of the common path 102. When the color of the paint filled in the paint cartridge 104 is changed, the cleaning fluid is supplied to the common path 102 via the cleaning fluid path 109 and the cleaning fluid supply valve 108. The paint remaining in the common path 102 is washed away by the cleaning fluid and discharged to the outside of the paint filling apparatus 100 via the paint discharge path 110, so that the paint is not mixed at the next paint filling.

  However, when the color change is frequently performed, the paint loss in the common path 102 is discarded every time the color is changed. More specifically, for example, painting using a paint of about 20 colors is frequently performed on a painting line of an automobile body. Since the paint filling device 100 used in this painting line requires about 20 paint supply valves 106 corresponding to the paint colors, the common path 102 to which the paint supply valve 106 is connected tends to be long. As a result, the amount of paint remaining in the common path 102 increases. Therefore, if the color is changed frequently, the amount of paint discarded increases.

  Therefore, a gate valve 111 (see FIG. 3) is provided in the middle of the common path 102, and a high-frequency paint supply valve 106 that is frequently used is disposed on the downstream side of the gate valve 111, and the upstream side of the gate valve 111. It has been proposed to arrange a paint supply valve 106 for low-frequency colors that is used less frequently (see, for example, Patent Document 1). In this way, when the paint of high frequency color is filled, the common path 102 is blocked by the gate valve 111 and the paint is supplied only to the downstream common path 102, so that the paint is supplied in the common path 102. That is, the portion where the paint remains at the time of color change is shortened. As a result, the amount of discarded high-frequency color paint is reliably reduced, so that the amount of paint discarded can be reduced efficiently.

JP 2012-130819 A (FIG. 1 etc.)

  However, although the paint discharge path 110 exists on the downstream side of the gate valve 111, the cleaning fluid path 109 exists only on the upstream side of the gate valve 111, so that the gate valve is supplied every time the cleaning fluid is supplied to the common path 102. 111 needs to be operated. As a result, the number of operations of the gate valve 111 increases, and there is a problem that the life of the gate valve 111 is shortened.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a paint filling apparatus capable of extending the life of a gate valve by reducing the number of operations of the gate valve. .

  In order to solve the above-mentioned problem, the invention described in means 1 is provided with a common path in which a plurality of paint paths provided for a plurality of colors of paint and a cleaning fluid path for supplying a cleaning fluid communicate with each other. An apparatus main body, a connection portion provided at one end of the apparatus main body, in which a paint cartridge is mounted in a state where it can communicate with a downstream end of the common path, and the plurality of paint paths and the common path in the apparatus main body A plurality of paint supply valves disposed respectively in communication portions, a cleaning fluid supply valve disposed in a communication portion between the cleaning fluid path and the common path in the apparatus main body, and the common path A gate valve that shuts off and communicates with the gate valve in the middle thereof, and a part of the plurality of paint supply valves and the cleaning fluid supply bar on the upstream side of the gate valve in the common path. And an upstream valve that is the cleaning fluid supply valve and a remaining one of the plurality of paint supply valves is disposed downstream of the gate valve in the common path. And opening one of the plurality of paint supply valves to supply a predetermined color of paint, filling the paint cartridge into the paint cartridge via the common path, and changing the color of the paint, A paint filling apparatus configured to open at least one of the upstream side valve and the downstream side valve to supply a cleaning fluid to the common path and to wash away paint remaining in the common path. The gist.

  Therefore, according to the invention described in the means 1, the upstream valve that is the cleaning fluid supply valve is disposed on the upstream side of the gate valve, and the downstream that is also the cleaning fluid supply valve on the downstream side of the gate valve. A side valve is arranged. Therefore, when the paint supply valve arranged on the downstream side of the gate valve is opened and the paint is supplied to the common path, the paint remaining in the common path is washed away from the upstream side and the downstream side of the common path. It is possible to open only the downstream valve in a state in which is blocked. As a result, the cleaning fluid can be supplied only to the downstream side of the common path. That is, when cleaning only the downstream side of the common path, it is not necessary to operate the gate valve so as to communicate the upstream side and the downstream side of the common path. As a result, the life of the gate valve can be extended.

  For example, the cleaning fluid path of the apparatus main body provided in the paint filling apparatus has a function of supplying at least one of a cleaning agent that is a cleaning fluid and cleaning air that is a cleaning fluid. A fluid supply device is connected. The cleaning fluid supply device may have a function of supplying only the cleaning agent or may have a function of supplying only the cleaning air, but in particular, has a function of supplying only the cleaning agent. It is preferable to have. In this way, it is possible to reliably wash away the paint remaining in the common path. However, it is more preferable that the cleaning fluid supply device has a function of supplying both the cleaning agent and the cleaning air. In this case, for example, if the paint in the common path is washed away by alternately supplying the cleaning agent and the cleaning air, the cleaning fluid can be efficiently cleaned with a relatively small amount of the cleaning fluid. Material costs can be reduced.

  The paint filling apparatus includes an apparatus main body in which a plurality of paint paths provided for a plurality of colors of paint and a common path communicating with a cleaning fluid path for supplying a cleaning fluid are formed. Here, the apparatus main body has a plurality of paint valve units provided with a plurality of paint supply valves and a part of a common path, and a plurality of paint valve units are arranged in a multi-tiered manner to extend along the stacking direction of the plurality of paint valve units. The connection part and the gate valve are provided in the uppermost paint valve unit in the apparatus body, and the supply amount of the cleaning fluid supplied to the common path by opening the downstream valve is It is preferable that the supply amount of the cleaning fluid supplied to the common path by opening the upstream valve is smaller. In this way, by arranging a plurality of coating valve units in a multi-stage manner, the apparatus main body can be compactly formed, and the common path formed in the apparatus main body can be shortened. Further, since the gate valve is provided in the uppermost paint valve unit provided with the connecting portion of the paint cartridge, the downstream length of the common path blocked by the gate valve can be shortened. As a result, when the downstream valve disposed downstream of the gate valve is opened, the supply amount of the cleaning fluid supplied to the common path can be reliably reduced.

  Note that the supply time of the cleaning fluid supplied to the common path by opening the downstream valve may be shorter than the supply time of the cleaning fluid supplied to the common path by opening the upstream valve. In this way, when the downstream valve is opened, the supply amount of the cleaning fluid supplied to the common path can be reliably reduced.

  In addition, a low-frequency paint supply valve that is used less frequently is arranged on the upstream side of the gate valve, and a high-frequency color paint supply that is used more frequently than the low-frequency color on the downstream side of the gate valve. A valve is preferably arranged. In this case, after the paint supply valve for the low frequency color is opened and the paint is supplied to the common path, the gate valve is operated when washing the low frequency color paint remaining in the common path. The upstream valve is opened with the upstream side and the downstream side of the common path communicating with each other. As a result, the cleaning fluid is supplied to the entire common path. On the other hand, when the high frequency color paint supply valve is opened and the paint is supplied to the common path, the high frequency color paint remaining in the common path is washed away from the upstream side and the downstream side of the common path. Only the downstream valve is opened in the state that is shut off. As a result, the cleaning fluid is supplied only to the downstream side of the common path. For this reason, it is not necessary to operate the gate valve when cleaning high-frequency color paints. That is, when the low-frequency color paint is washed, the number of times of operation of the gate valve is the same as that of the prior art. As a result, there is a high possibility that the gate valve does not need to be operated during paint cleaning, and therefore the number of gate valve operations can be efficiently reduced.

  In addition, it does not specifically limit as a kind of gate valve, For example, a diaphragm valve etc. can be used. Since such a diaphragm valve has a relatively high durability among the valves, it is suitable for use in a paint filling apparatus. It is also possible to select a check valve that operates without using pilot air as the gate valve. Even in this case, the durability of the gate valve can be improved.

  As described above in detail, according to the first to seventh aspects of the invention, the life of the gate valve can be extended by reducing the number of operations of the gate valve.

The schematic block diagram which shows the coating material filling system of this embodiment. The disassembled perspective view which shows a coating material filling apparatus. The schematic block diagram which shows the coating material filling apparatus in a prior art.

  Hereinafter, an embodiment embodying the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the paint filling system 1 of the present embodiment includes a paint filling device 2, an air supply device 3 that supplies air for operating each valve provided in the paint filling device 2, and an air And a control panel 4 for controlling the supply device 3, and is used, for example, in a painting line for painting an automobile body.

  The paint filling device 2 includes a device main body 11 and a connection portion 12 provided at one end (the upper end in FIG. 1) of the device main body 11. The apparatus main body 11 is supplied with a plurality of paint paths 13 provided for each of a plurality of colors (20 colors in this embodiment) and a pair of cleaning fluids (cleaning agents and cleaning air in this embodiment). A common path 15 through which the cleaning fluid path 14 communicates is formed. In addition, the paint cartridge 16 is attached to the connecting portion 12 in a state where it can communicate with the downstream end of the common path 15.

  As shown in FIG. 1, the paint cartridge 16 is formed in a cylindrical shape, and a paint bag 20 is provided in the paint cartridge 16. The paint bag 20 is a flexible resin bag and is deformable. The paint cartridge 16 is configured to push out the paint in the paint bag 20 by injecting the paint extruding liquid. The paint bag 20 divides the internal region of the paint cartridge 16 into a paint chamber 21 filled with paint and a paint extrudate chamber 22 into which paint extruding liquid for extruding the paint from the paint chamber 21 is supplied and discharged. Thus, contact between the paint and the paint extruding liquid is prevented. The paint used in this embodiment is a conductive water-based paint for electrostatic coating, and the paint extrusion liquid used in this embodiment is an oily transparent liquid such as an insulating organic solvent. The maximum capacity of the paint chamber 21 is set to about 500 cc, and the maximum capacity of the paint extruding liquid chamber 22 is set to about 1000 cc.

  As shown in FIGS. 1 and 2, the apparatus main body 11 of the present embodiment includes four paint valve units 31, 32, 33, and 34 and one open / close valve unit 35 that are stacked in a multistage manner. It is configured. A common path 15 extending along the stacking direction of the valve units 31 to 35 is formed at the center of the apparatus main body 11. That is, a part of the common path 15 is formed at the center of each paint valve unit 31-34. Each paint valve unit 31-34 is formed in a hexagonal plate shape, and has a paint supply valve 41 at a position corresponding to each side of the hexagon. Each paint supply valve 41 is disposed so as to be interposed in a communication portion between the plurality of paint paths 13 and the common path 15.

  The uppermost paint valve unit 31 in the apparatus main body 11, specifically, the connecting portion 12 of the paint cartridge 16 is connected to the paint connection port 12 a that communicates with the common path 15 and the extrusion liquid connection that communicates with the paint extrusion liquid path 36. A mouth 12b is provided. The open / close valve unit 35 is formed in a square plate shape, and is disposed between the uppermost paint valve unit 31 and the second paint valve unit 32. The opening / closing valve unit 35 is provided with a paint extrusion liquid path 36 and an extrusion liquid valve 37 for opening and closing the paint extrusion liquid path 36. The paint extrusion liquid path 36 is connected via an extrusion liquid valve 37 to a paint extrusion liquid storage tank 38 outside the paint filling apparatus 2.

  As shown in FIGS. 1 and 2, six paint supply valves 41 are provided in the second-stage and third-stage paint valve units 32 and 33. The paint valve unit 34 at the lowermost stage is provided with five paint supply valves 41 and one upstream valve 42 (cleaning fluid supply valve). The upstream valve 42 is disposed in a communication portion between the cleaning fluid path 14 and the common path 15. The upstream valve 42 is connected to the cleaning fluid supply device 45 via the cleaning fluid path 14 and the supply hose 44. The cleaning fluid supply device 45 has a function of alternately supplying cleaning agent and cleaning air.

  The uppermost paint valve unit 31 is provided with four paint supply valves 41 and one downstream valve 43 (cleaning fluid supply valve). The downstream side valve 43 is disposed so as to be interposed in a communicating portion between the cleaning fluid path 14 and the common path 15. Further, the downstream valve 43 is connected to the cleaning fluid supply device 45 via the cleaning fluid path 14 and the supply hose 44.

  As shown in FIGS. 1 and 2, the paint valve unit 31 is provided with a trigger valve 46, a dump valve 47, a dump sensor 48, and a gate valve 49. Further, the paint valve unit 31 is provided with a paint discharge path 51 in addition to a part of the common path 15 and the paint extrusion liquid path 36. The paint discharge path 51 is connected to the downstream end of the common path 15, and a trigger valve 46 is provided at the connection portion. The trigger valve 46 is configured to block and communicate the downstream end of the common path 15 and the connection portion 12. Further, the trigger valve 46 blocks the common path 15 and the paint discharge path 51 and connects to the downstream end of the common path 15 when the downstream end of the common path 15 and the connection portion 12 communicate with each other. When the section 12 is shut off, the common path 15 and the paint discharge path 51 are communicated with each other.

  Further, a dump valve 47 and a dump sensor 48 are arranged in the middle of the paint discharge path 51. The dump sensor 48 is a sensor that detects the presence or absence of paint remaining in the paint discharge path 51. The detection signal of the dump sensor 48 is taken into the control panel 4. The dump valve 47 is a discharge valve for discharging the paint remaining in the common path 15 together with the cleaning fluid through the paint discharge path 51.

  As shown in FIGS. 1 and 2, the gate valve 49 is a valve that blocks and communicates the common path 15 on the way. In the paint valve unit 31, the gate valve 49 is located on the upstream side (lower side in FIG. 1) with respect to the communication part between each paint path 13 and the common path 15. It is arrange | positioned in the position of an upstream rather than the communication part.

  A part of the plurality of paint supply valves 41 is arranged on the upstream side of the gate valve 49 in the common path 15, specifically, the paint valve units 32 to 34 in the second to fourth stages. ing. The paint supply valve 41 provided in the paint valve units 32 to 34 is a low-frequency color valve that is used less frequently. On the other hand, the downstream of the gate valve 49 in the common path 15, specifically, the uppermost paint valve unit 31 is provided with the remaining one of the paint supply valves 41. The paint supply valve 41 provided in the paint valve unit 31 is a high-frequency color valve that is used more frequently than the low-frequency color. Further, the number of paint supply valves 41 for high frequency colors is smaller than the number of paint supply valves 41 for low frequency colors. Note that the high-frequency colors used for painting an automobile body are, for example, four colors of white, black, red, and silver. In addition, the usage ratio of the high-frequency colors (4 colors) to all colors (20 colors) is about 80%.

  As shown in FIGS. 1 and 2, an upstream valve 42 is disposed on the upstream side of the gate valve 49 in the common path 15. A downstream valve 43 is arranged on the downstream side of the gate valve 49 in the common path 15. The supply amount of the cleaning fluid supplied to the common path 15 by opening the downstream valve 43 is smaller than the supply amount of the cleaning fluid supplied to the common path 15 by opening the upstream valve 42. ing. Further, the supply time of the cleaning fluid supplied to the common path 15 by opening the downstream valve 43 is shorter than the supply time of the cleaning fluid supplied to the common path 15 by opening the upstream valve 42. ing.

  As shown in FIG. 2, a paint supply port 52 communicating with the paint path 13 is provided on the side surface corresponding to each side of the paint valve units 31 to 34. Each paint supply port 52 is connected to a paint supply tank 54 via a paint hose 53.

  An air supply port 55 connected to the paint supply valve 41 is provided on the side surface corresponding to each side of the paint valve units 31 to 34. Each air supply port 55 is connected to the air supply device 3 via an air hose 56. Any one of the plurality of paint supply valves 41 is operated by the pilot air supplied from the air supply device 3. Then, the paint path 13 is opened by the paint supply valve 41, and the paint path 13 communicates with the common path 15. As a result, the paint of a predetermined color from the paint supply tank 54 is supplied to the common path 15 via the paint path 13, and the paint cartridge 16 is filled with the paint via the paint connection port 12 a at the downstream end of the common path 15. Is done.

  In this embodiment, the extrusion valve 37, the upstream valve 42, the downstream valve 43, the trigger valve 46, the dump valve 47 and the gate valve 49 are the same air valves as the paint supply valve 41. The air is supplied through 56 (pilot air) so that each path is cut off and communicated.

  An air supply source 60 such as an air pump is connected to the air supply device 3 shown in FIGS. 1 and 2 via an air hose 61, and primary air is supplied from the air supply source 60. The air supply device 3 is connected to the control panel 4 via a signal line 62, and drives an electromagnetic valve (not shown) based on a control signal output from the control panel 4, thereby providing an air supply path. Switch. As a result, the air for operating each valve 37,41-43,46,47,49 is output, and the coating material filling apparatus 2 is driven. The control panel 4 is configured around a known microcomputer including a CPU, ROM, RAM, input / output device, and the like, and controls the paint filling system 1 in an integrated manner.

  Next, a method for using the paint filling system 1 will be described.

  First, a filling process for filling the paint cartridge 16 with the high-frequency color paint will be described. Specifically, the high-frequency color paint cartridge 16 is attached to the connection portion 12 of the paint filling apparatus 2. At this time, the control panel 4 supplies pilot air from the air supply device 3 to the trigger valve 46, operates the trigger valve 46, and communicates the downstream end of the common path 15 to the connection portion 12. And the paint discharge path 51 are shut off. Further, the control panel 4 supplies pilot air from the air supply device 3 to the extrusion valve 37, operates the extrusion valve 37 to open the coating solution passage 36, and discharges the coating solution in the coating cartridge 16. Make it possible. Further, pilot air is supplied from the air supply device 3 to the gate valve 49, and the gate valve 49 is operated to divide (cut off) the common path 15 into the upstream side and the downstream side. Thereafter, the control panel 4 supplies pilot air from the air supply device 3 to the high-frequency color paint supply valve 41 to be filled, and makes the high-frequency color paint path 13 communicate with the common path 15. . As a result, the paint in the paint supply tank 54 is supplied to the downstream side of the common path 15 via the paint path 13, and the paint is filled into the paint bag 20 of the paint cartridge 16 from the paint connection port 12 a via the common path 15. The When the paint is filled, high-frequency color paint does not flow into the upstream side (the lower side in FIG. 1) of the common path 15 blocked by the gate valve 49.

  At this time, the paint bag 20 is deformed and inflated when the paint is filled therein. Along with this, the reduced paint extrudate in the paint extrudate chamber 22 is pushed out of the paint cartridge 16. Then, the extruded paint extruding liquid is discharged to the paint extruding liquid storage tank 38 outside the paint filling apparatus 2 via the extrusion liquid connecting port 12b and the paint extruding liquid path 36.

  Then, after filling the paint, the paint cartridge 16 is removed from the connecting portion 12 of the paint filling apparatus 2. Thereafter, when another paint cartridge 16 is filled with a paint of a different color (when the paint color is changed), a cleaning process for washing away the paint remaining in the common path 15 is performed.

  In the cleaning process, the control panel 4 supplies pilot air from the air supply device 3 to the trigger valve 46 and activates the trigger valve 46 to shut off the downstream end of the common path 15 and the connection portion 12. The path 15 and the paint discharge path 51 are communicated. Further, the control panel 4 supplies pilot air from the air supply device 3 to the dump valve 47 and operates the dump valve 47 to open the paint discharge path 51. Thereafter, in a state where the upstream side and the downstream side of the common path 15 are separated, pilot air is supplied from the air supply device 3 to the downstream side valve 43, and the downstream side valve 43 is operated to change the cleaning fluid path 14. By opening, the cleaning fluid flows into the downstream side of the common path 15. That is, when only the downstream side of the common path 15 is washed, it is not necessary to operate the gate valve 49 to connect the upstream side and the downstream side of the common path 15. As a result, the paint remaining on the downstream side of the common path 15 is washed away by the cleaning fluid, and the cleaning fluid containing the paint is discharged from the common path 15 to the outside of the paint filling apparatus 2 through the paint discharge path 51. Is done.

  Thereafter, when the paint cartridge 16 is filled with high-frequency color paint, the above-described filling process is performed without operating the gate valve 49 with the common path 15 being divided into the upstream side and the downstream side. Try again. As a result, the paint cartridge 16 is filled with paints having different paint colors. In this case, the number of operations of the gate valve 49 does not increase.

  On the other hand, when the paint cartridge 16 is filled with the low-frequency color paint, the pilot air is supplied from the air supply device 3 to the gate valve 49, and the gate valve 49 is operated to connect the upstream side and the downstream side of the common path 15. To communicate. At this time, the number of operations of the gate valve 49 increases by one. In this state, the above-described filling process is performed. As a result, the paint cartridge 16 is filled with paints having different paint colors.

  Therefore, according to the present embodiment, the following effects can be obtained.

  (1) In the paint filling apparatus 2 of the present embodiment, the upstream valve 42 is disposed on the upstream side of the gate valve 49, and the downstream valve 43 is disposed on the downstream side of the gate valve 49. For this reason, when the paint supply valve 41 arranged on the downstream side of the gate valve 49 is opened and the paint is supplied to the common path 15, the paint remaining in the common path 15 is washed away. Only the downstream valve 43 can be opened while the upstream side and the downstream side remain blocked. As a result, the cleaning fluid can be supplied only to the downstream side of the common path 15. That is, when only the downstream side of the common path 15 is washed, it is not necessary to operate the gate valve 49 so that the upstream side and the downstream side of the common path 15 communicate with each other. As a result, the life of the gate valve 49 can be extended.

  More specifically, when the gate valve 49 is operated in a state where the common path 15 is dry after cleaning, the V packing (not shown) in the gate valve 49 is likely to be damaged. In this case, there is a problem that pilot air for operating the gate valve 49 leaks into the common path 15 and is mixed into the paint cartridge 16. However, in this embodiment, the above problem can be solved by reducing the number of operations of the gate valve 49 and extending the life of the V-packing.

  (2) In this embodiment, the open / close valve unit 35 provided with the extrusion valve 37 is provided between the uppermost paint valve unit 31 and the second paint valve unit 32. In this case, the opening / closing valve unit 35 is disposed upstream of the position of the gate valve 49. Therefore, the common path 15 on the downstream side of the gate valve 49 can be shortened, and the paint and cleaning fluid discarded when the paint is frequently filled can be surely reduced.

  In addition, you may change this embodiment as follows.

  In the above embodiment, the upstream side valve 42 is arranged in the lowest paint valve unit 34, but if it can be arranged upstream of the gate valve 49, the first to third stage paint valve units 31. Upstream valve 42 may be arranged at ~ 33. Similarly, the downstream valve 43 is disposed in the uppermost paint valve unit 31, but if it can be disposed downstream of the gate valve 49, the second to fourth paint valve units 32 to 34 are provided. A downstream valve 43 may be arranged. In the above embodiment, the gate valve 49 is provided in the uppermost paint valve unit 31, but the gate valve 49 may be provided in the second and subsequent paint valve units 32 to 34.

  In the above embodiment, the high-frequency color paint supply valve 41 is disposed on the downstream side of the gate valve 49, and the low-frequency color paint supply valve 41 is disposed on the upstream side of the gate valve 49. However, the present invention is not limited to this. For example, a paint supply valve 41 for metallic paint that is difficult to clean is provided on the downstream side of the gate valve 49, and a paint supply valve 41 for non-metallic paint that is easy to clean is provided on the upstream side of the gate valve 49. Good. In this way, the length of the common path 15 through which the paint is supplied can be shortened when the metallic paint that is difficult to clean is filled, so that the paint remaining in the common path 15 is reduced. Therefore, when the color of the paint is changed, the cleaning in the common path 15 can be reliably performed in a relatively short time.

  In the above embodiment, an air valve driven by air is used as the gate valve 49, but the present invention is not limited to this. For example, the gate valve 49 may be a diaphragm valve or a check valve that operates without using pilot air. These diaphragm valves and check valves are suitable for use in the coating material filling apparatus 2 because they have relatively high durability among the valves. Note that the gate valve 49 may be configured by an electromagnetic valve when used in an environment where no explosion-proof measures are required.

  In the above embodiment, air valves that are driven by air are used as the valves 37, 41 to 43, 46, and 47. However, the present invention is not limited to this. For example, each valve 37, 41 to 43, 46, 47 may be a diaphragm valve. When used in an environment where no explosion-proof measures are required, the valves 37, 41 to 43, 46, 47 may be constituted by electromagnetic valves.

  In the coating material filling device 2 of the above embodiment, the cleaning agent and the cleaning air are alternately flowed through the cleaning fluid path 14 so that the paint remaining in the common path 15 is washed away. However, the present invention is not limited to this. It is not a thing. For example, the paint in the common path 15 may be washed away by simultaneously flowing a cleaning agent and cleaning air through the cleaning fluid path 14. Alternatively, the paint in the common path 15 may be washed away using only the cleaning agent, or the paint in the common path 15 may be washed away using only the cleaning air.

  In the paint filling apparatus 2 of the above embodiment, the hexagonal plate-like paint valve units 31 to 34 are used, but the invention is not limited to this, and other shapes such as a square plate shape are used. Also good. Furthermore, the number of paint supply valves 41 provided in one paint valve unit may be changed as appropriate according to the unit shape and size. Moreover, in the said embodiment, although the apparatus main body 11 was comprised by laminating | stacking the four paint valve units 31-34, the number of lamination | stacking of a paint valve unit may be changed suitably.

  Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the embodiment described above are listed below.

  (1) In the above means 1, the paint supply valve for high-frequency colors having a high use frequency is disposed downstream of the gate valve, and used more frequently than the high-frequency colors on the upstream side of the gate valve. The paint supply valve for the low-frequency color having a low frequency is arranged, and the number of the paint supply valves for the high-frequency color is less than the number of the paint supply valves for the low-frequency color apparatus.

  (2) In the above-mentioned means 1, the paint filling device, wherein the gate valve and the paint supply valve are valves operated by pilot air.

  (3) In the above means 1, the apparatus main body includes a plurality of paint valve units in which a plurality of paint valve units provided with the plurality of paint supply valves and a part of the common path are arranged in a multistage manner. Forming the common path extending along the stacking direction of the units, and the paint cartridge is configured to extrude the paint in the paint bag by injecting the paint extrudate, A paint filling apparatus, wherein an open / close valve unit provided with an extrusion valve for opening and closing is disposed between the uppermost paint valve unit and the second paint valve unit in the apparatus main body.

  (4) In the above means 1, the apparatus main body includes a plurality of paint valve units in which a plurality of paint valve units provided with the plurality of paint supply valves and a part of the common path are arranged in a multi-stage manner. The common path extending along the stacking direction of the units is formed, and the paint valve unit at the uppermost stage in the apparatus main body is for discharging the paint remaining in the common path and the cleaning fluid. A paint filling device, characterized by being provided with a discharge valve.

  (5) In the above means 1, the apparatus body is formed by laminating a plurality of paint valve units provided with the plurality of paint supply valves and a part of the common path in a plurality of stages, and a plurality of paint valve units. Among the plurality of paint valve units, the upstream side valve is provided in the paint valve unit provided in the lowermost stage, and the downstream side valve is provided in the paint valve unit provided in the uppermost stage of the plurality of paint valve units. A paint filling device.

  (6) In the above means 1, the apparatus main body is formed by laminating a plurality of paint valve units provided with the plurality of paint supply valves and a part of the common path in a multi-stage manner, except for the uppermost stage. A paint filling apparatus, wherein the paint valve unit is provided with the gate valve.

DESCRIPTION OF SYMBOLS 2 ... Paint filling apparatus 11 ... Apparatus body 12 ... Connection part 13 ... Paint path 14 ... Cleaning fluid path 15 ... Common path 16 ... Paint cartridge 31, 32, 33, 34 ... Paint valve unit 41 ... Paint supply valve 42 ... Cleaning Upstream valve 43 as a fluid supply valve ... downstream valve 45 as a cleaning fluid supply valve ... cleaning fluid supply device 49 ... gate valve

Claims (7)

An apparatus main body formed with a plurality of paint paths provided for each of the paints of a plurality of colors, and a common path communicating with a cleaning fluid path for supplying a cleaning fluid;
A connecting portion that is provided at one end of the apparatus main body and on which a paint cartridge is mounted in a state where it can communicate with the downstream end of the common path;
A plurality of paint supply valves disposed respectively in communication portions of the plurality of paint paths and the common path in the apparatus body;
A cleaning fluid supply valve disposed in a communication portion between the cleaning fluid path and the common path in the apparatus main body;
A gate valve that shuts off and communicates the common path on the way,
A part of the plurality of paint supply valves and an upstream valve that is the cleaning fluid supply valve are arranged on the upstream side of the gate valve in the common path,
On the downstream side of the gate valve in the common path, the remaining one of the plurality of paint supply valves and a downstream valve that is the cleaning fluid supply valve are arranged,
One of the plurality of paint supply valves is opened to supply a paint of a predetermined color, and the paint cartridge is filled into the paint cartridge via the common path. A paint filling apparatus, wherein at least one of the side valve and the downstream valve is opened to supply a cleaning fluid to the common path, and the paint remaining in the common path is washed away.   A cleaning fluid supply device having a function of supplying at least one of the cleaning agent that is the cleaning fluid and the cleaning air that is the cleaning fluid is connected to the cleaning fluid path. The paint filling apparatus according to claim 1. The apparatus main body extends along the stacking direction of the plurality of paint valve units by arranging a plurality of paint valve units provided with the plurality of paint supply valves and a part of the common path in a multistage manner. Forming the common path,
In the paint valve unit at the uppermost stage in the apparatus body, the connection part and the gate valve are provided,
The supply amount of the cleaning fluid supplied to the common path by opening the downstream valve is smaller than the supply amount of the cleaning fluid supplied to the common path by opening the upstream valve. The paint filling apparatus according to claim 1, wherein   The supply time of the cleaning fluid supplied to the common path by opening the downstream valve is shorter than the supply time of the cleaning fluid supplied to the common path by opening the upstream valve. The paint filling apparatus according to claim 1, wherein   The paint supply valve for low-frequency colors that is used infrequently is arranged on the upstream side of the gate valve, and is used for high-frequency colors that are used more frequently than the low-frequency colors on the downstream side of the gate valve. The paint filling apparatus according to any one of claims 1 to 4, wherein the paint supply valve is disposed.   The paint filling apparatus according to any one of claims 1 to 5, wherein the gate valve is a diaphragm valve.   The paint filling apparatus according to any one of claims 1 to 5, wherein the gate valve is a check valve that operates without using pilot air.

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