KR102595706B1 - Method of supplying multi-liquid mixed paint using supply system of multi-liquid mixed paint - Google Patents

Abstract

The object of the present invention is to make it possible to reliably perform mixing while maintaining a certain mixing ratio in painting using a multi-liquid mixed paint, and to keep the discharge amount of the paint supplied to the spray gun constant.
In order to solve the above problems, the present invention is a supply system for a multi-liquid mixed paint that mixes a plurality of liquids to produce a multi-liquid mixed paint, and supplies the produced multi-liquid mixed paint to one or a plurality of spray guns. It is provided with a main syringe (31) that supplies liquid to the spray gun, a pump that delivers a plurality of liquids to the main syringe side, and a mixing section (22) that mixes the plurality of liquids delivered by the pump. By driving, a plurality of liquids are mixed and filled into the main syringe (31), and the multi-liquid mixed paint is temporarily stored in the main syringe (31). Then, by driving the main syringe (31), the main syringe (31) ) Supply the multi-liquid mixed paint stored in the spray gun.

Description

Method of supplying multi-liquid mixed paint using a supply system of multi-liquid mixed paint {METHOD OF SUPPLYING MULTI-LIQUID MIXED PAINT USING SUPPLY SYSTEM OF MULTI-LIQUID MIXED PAINT}

[0001] The present invention relates to a supply system for a multi-liquid mixed paint produced by mixing a plurality of liquids to a spray gun and a supply method for the multi-liquid mixed paint using the same. , More specifically, a supply system for a multi-liquid mixed paint that ensures that the liquids are mixed when producing a multi-liquid mixed paint and at the same time supplies the mixed paint to the spray gun while maintaining a constant pressure, and a multi-liquid mixed paint using the same. It's about supply method.

[0002] Conventionally, when painting a workpiece, in addition to painting using a one-liquid paint, a multi-liquid mixed paint produced by mixing a plurality of liquids has been used. And, for example, there are such multi-liquid mixed paints that are produced by adding additives such as hardeners in addition to the base material. At the time of production, by adding additives to the base material, the base material and additives, which are the raw materials for the multi-liquid mixed paint, are mixed. A method of feeding to a spray gun while mixing is adopted.

[0003] Here, a method of supplying a paint using a conventional multi-liquid mixed paint is described. A method of supplying a multi-liquid mixed paint generally involves passing a plurality of liquids through a joining means such as a manifold using a static mixer. ), and mixing a plurality of liquids in the static mixer to produce a multi-liquid mixed paint, while supplying the resulting multi-liquid mixed paint to a spray gun.

[0004] To explain this conventional method with reference to FIG. 5, FIG. 5 is a diagram showing an image of a conventional multi-liquid mixed paint supply system, in which 52 is a spray gun and 53 is a spray gun (52). ) is a supply hose for supplying paint to the machine.

[0005] In the drawing, 64 is a main tank in which the main agent is stored, and 65 is an additive tank in which additives such as a hardener are stored.

[0006] Meanwhile, in the drawing, 55 is a confluence portion for joining the main agent and the additive, and the confluence portion 55 is connected to the main tank 64 through the main conveyance hose 56. , is connected to the additive tank 65 by an additive return hose 57.

[0007] In addition, a static mixer 54 as a mixing means is connected to the discharge side of the confluence portion 55, and the supply hose (54) for supplying the paint to the spray gun 52 is connected to the discharge side of the static mixer 54. 53) is connected.

[0008] Next, pressure feeding pumps 62 and 63 are disposed on the main conveyance hose 56 and the additive conveyance hose 57, respectively, and a pressure feeding pump ( Flow meters 60 and 61 are disposed between the flow meters 62 and 63 and the confluence portion 55, respectively, and valves 58 and 59 are disposed between the flow meters 60 and 61 and the confluence portion 55, respectively. It is done. Then, by opening the valves 58 and 59 and operating the pressure pumps 62 and 63, the main substance in the main tank 64 and the additive in the additive tank 65 are merged at the confluence portion 55. It is possible to send it to the static mixer 54 while passing it through the unit.

[0009] That is, in the supply system shown in FIG. 5, when the main agent and additive are mixed and supplied to the spray gun 52, the main agent valve 58 is opened and the main agent flow meter 60 is used. By driving the main agent pump 62 while monitoring the capacity of the main agent, an appropriate amount of main agent is delivered to the static mixer 54 while passing through the confluence portion 55. At the same time, with the additive valve 59 open, the additive pump 63 is driven while monitoring the additive capacity with the additive flow meter 61 to supply an appropriate amount of the additive to the confluence portion 55. It is sent to the static mixer (54) while passing through. Then, the base material and the hardener are combined at the confluence part 55 at the optimal capacity and mixing ratio, pass through the confluence part, and are sent to the static mixer 54, and are then mixed in the static mixer 54 to produce a mixed paint. , is supplied to the spray gun 52 through the supply hose 53.

[0010] 1. Japanese Patent Publication No. 2009-254982 2. Japanese Patent Publication No. 2009-233631 3. Japanese Patent Publication No. 2006-212604 4. Japanese Patent Publication No. 2004-008844 5. Japanese Patent Publication No. 2001-310143 6. Japanese Patent Publication No. 2000-135454

[0011] However, taking as an example the case where a mixed paint is created by mixing a hardener with a base material, generally, the mixing ratio of the hardener to the base material is very small, such as 10 to 1 or 4 to 1. For this reason, in the conventional system described above, the capacity of the base material and hardener delivered to the static mixer 54 is measured by the flow meters 60 and 61, thereby maintaining the mixing ratio of the base material and hardener, and the static mixer It is common to produce mixed paints within (54).

[0012] At this time, there is no particular problem when painting is performed by continuously ejecting the paint, for example, when spraying using a manual spray gun, but automatic machines such as painting robots do not cause any particular problems. ), when painting a workpiece by repeatedly turning the spray gun on and off, the mixing ratio between the base material and the hardener may not be constant and may deviate.

[0013] In addition, when painting is performed with an automatic machine such as a painting robot, in order to paint uniformly, the pressure of the paint supplied to the spray gun must be constant, but in the conventional supply system described above, a static mixer, etc. Since a multi-liquid mixed paint is produced within the mixing means and the produced mixed paint is supplied to the spray gun, the pressure of the paint supplied to the spray gun when on/off is that of the paint when the paint is continuously supplied. There may be cases where the pressure is different, in which case there is a risk of stains forming on the painted surface.

[0014] In addition, in the method of mixing a plurality of liquids in a mixing means such as a static mixer to produce a multi-liquid mixed paint and supplying it to the spray gun, especially when the supply of the paint is stopped by turning on/off the spray gun, A problem can also be pointed out that reliable mixing cannot be achieved in a mixing means such as a static mixer.

[0015] In addition, when supplying the main agent or additive to the confluence using a pressure pump, a flow meter is used as described above to maintain the capacity or mixing ratio of the main agent and additive to be supplied. In this case, The problem of increased costs was also pointed out because it was necessary to use a flow meter with explosion-proof specifications.

[0016] Furthermore, as in the conventional supply system described above, when the paint is supplied to the spray gun while mixing in a static mixer, when the number of spray guns is increased, it is necessary to increase the static mixer or confluence portion accordingly. Therefore, it can be pointed out that the problem is that the cost increases accordingly.

[0017] Therefore, the present invention is a multi-liquid mixture that makes it possible to reliably mix the multi-liquid while maintaining a certain mixing ratio when painting a workpiece with a multi-liquid mixed paint, and at the same time, it is possible to keep the discharge amount of the paint supplied to the spray gun constant. The object is to provide a supply system for mixed paint and a supply method for multi-liquid mixed paint using the same.

[0018] The supply system for the multi-liquid mixed paint of the present invention,

A supply system for a multi-liquid mixed paint for mixing a plurality of liquids to produce a multi-liquid mixed paint and supplying the produced multi-liquid mixed paint to one or a plurality of spray guns,

A main syringe that supplies multi-liquid mixed paint to the spray gun,

It is characterized by providing a pump for storing the multi-liquid mixed paint in the main syringe by sending each of the plurality of liquids to the main syringe.

[0019] The supply method of the multi-liquid mixed paint of the present invention using this multi-liquid mixed paint supply system is to temporarily store the multi-liquid mixed paint in the main syringe by driving the pump, and then drive the main syringe. , It is characterized by supplying the stored multi-liquid mixed paint to the spray gun.

[0020] In the supply system and paint supply method of the multi-liquid mixed paint of the present invention, the main syringe that supplies the multi-liquid mixed paint to the spray gun and each of the plurality of liquids are delivered to the main syringe, so that the multi-liquid mixed paint is stored in the main syringe. A pump is provided for storing the mixed paint. By driving the pump, the multi-liquid mixed paint is temporarily stored in the main syringe. Then, by driving the main syringe, the multi-liquid mixed paint once stored in the main syringe is sprayed. It is being supplied to the gun. That is, in the present invention, unlike the conventional system, which produces a multi-liquid mixed paint within a mixing means such as a static mixer and supplies the produced mixed paint to a spray gun in real time, multi-liquid mixing is performed by driving a pump. The paint is once stored in the main syringe, and then the main syringe is driven to supply the multi-liquid mixed paint once stored in the main syringe to the spray gun.

[0021] For this reason, even when painting a workpiece by repeatedly turning the spray gun on and off using an automatic machine such as a painting robot, it is possible to keep the mixing ratio of the base material and additives constant and ensure reliable mixing. It can be achieved.

[0022] In addition, since the multi-liquid mixed paint is once stored in the main syringe and then the stored paint is supplied to the spray gun, the pressure of the paint supplied to the spray gun is kept constant even when the spray gun is turned on/off. It is possible to maintain a constant level, so there is no risk of stains forming on the painted surface, and at the same time, it is possible to keep the discharge amount of paint supplied to the spray gun constant.

[0023] In addition, since the multi-liquid mixed paint is first stored in the main syringe and then supplied to the spray gun from the main syringe, even when the number of spray guns is increased, the multi-liquid mixed paint is stored in the main syringe. There is no need to increase the number of pumps, etc. to do this, preventing costs from increasing.

[0024] Therefore, in the present invention, when painting a workpiece with a multi-liquid mixed paint, it is possible to reliably perform mixing while maintaining a certain mixing ratio, and at the same time, it is possible to keep the discharge amount of the paint supplied to the spray gun constant. .

[0025] Figure 1 is a diagram showing an image of an embodiment of a supply system for a multi-liquid mixed paint according to the present invention.
Figure 2 is a diagram for explaining a syringe in an example of a supply system for a multi-liquid mixed paint according to the present invention.
Figure 3 is a diagram for explaining a method of driving the main syringe in an embodiment of the multi-liquid mixed paint supply system according to the present invention.
Figure 4 is a diagram showing another configuration of a syringe in an embodiment of the supply system for a multi-liquid mixed paint according to the present invention.
Figure 5 is a diagram for explaining a conventional multi-liquid mixed paint supply system.

[0026] In the supply system for a multi-liquid mixed paint according to the present invention, a main syringe supplies a multi-liquid mixed paint to one or more spray guns, and each of the plurality of liquids is delivered to the main syringe, so that It is equipped with a pump for storing multi-liquid mixed paint. Then, by driving the pump and sending out each of the plurality of liquids to the main syringe, the multi-liquid mixed paint is temporarily stored in the main syringe. Then, by driving the main syringe, the multi-liquid mixed paint once stored in the main syringe is stored. is supplied to the spray gun.

[0027] Here, a mixing section such as a static mixer is disposed in front of the main syringe, and a plurality of liquids are respectively discharged toward the main syringe. At the same time, the multiple liquids being delivered are mixed within the mixing section and fed to the main syringe. By filling, the multi-liquid mixed paint can be temporarily stored in the main syringe. This makes it possible to easily store the multi-liquid mixed paint in the main syringe.

[0028] In addition, the type of pump for delivering multiple liquids is not particularly limited, but a syringe pump or a diaphragm pump may be used. Depending on the liquid to be delivered, a syringe pump or a diaphragm pump may be used separately. . And, especially when using a syringe pump, a fixed amount can be delivered, so unlike the conventional system using a pressure pump, there is no need to use a flow meter, making it possible to keep costs down.

[0029] In addition, the main syringe includes a cylindrical syringe body with a closed tip, a piston inserted into the syringe body so as to be capable of moving forward and backward, and a piston rod connected to the piston. It is provided with a paint discharge port to which the proximal end of the paint supply hose to which the spray gun is connected is formed at the distal end of the syringe body, and a paint charging port is formed in the piston at the same time. , a paint charging passage connected to and communicating with the paint charging port may be formed in the piston rod. This makes it possible to easily fill the main syringe with the mixed paint, and at the same time, fill the filled paint into the main syringe. When supplying to a spray gun, it is possible to reliably supply a fixed amount of paint.

[0030] In addition, the main syringe includes a cylindrical syringe body with a closed distal end, a piston inserted and installed to be able to move forward and backward within the syringe main body, and a piston rod connected to the piston, and at the distal end of the syringe main body, It may be configured to have a filling port and a discharge port, and to be able to fill the paint into the syringe body from the filling port.

[0031] Furthermore, by providing a plurality of main syringes, it is possible to supply a multi-liquid mixed paint to a plurality of spray guns.

[0032] In the multi-liquid paint supply method of the present invention using the multi-liquid paint supply system of the present invention configured as described above, the pump is driven to deliver each of the plurality of liquids to the main syringe. The multi-liquid mixed paint is temporarily stored inside. Next, by driving the main syringe, the multi-liquid mixed paint once stored in the main syringe is supplied to the spray gun.

[0033] To describe an embodiment of the multi-liquid mixed paint supply system (hereinafter simply referred to as “paint supply system”) of the present invention with reference to the drawings, FIG. 1 shows the overall picture of the paint supply system of this embodiment. This is an image drawing for explaining the configuration. In the drawing, 36 is a spray gun, and 35 is a paint supply hose for supplying multi-liquid paint to the spray gun 36.

[0034] In the paint supply system 1 of this embodiment, two spray guns are provided, and a multi-liquid mixed paint produced by mixing a plurality of liquids is supplied to the two spray guns. However, the paint supply system of the present invention is not necessarily limited to a system that supplies paint to two spray guns, but may be a system that supplies paint to one spray gun, or may supply paint to three or more spray guns. It can be used as a system that supplies .

[0035] Next, in the drawing, numbers 2, 7, and 12 are storage portions that contain liquid for producing a multi-liquid mixed paint supplied by the paint supply system of this embodiment, and are used as tanks in this embodiment. In addition, 2 is a base tank containing the base material, 7 is a curing agent tank containing a curing agent, and 12 is a dilution thinner tank containing a dilution thinner. That is, the paint supply system 1 of this embodiment is a system that supplies a three-liquid mixed paint, which is a mixture of three liquids: base material, hardener, and thinner for dilution, to the spray gun.

[0036] However, in the supply system for the multi-liquid mixed paint of the present invention, the type or number of liquids for producing the multi-liquid mixed paint is not particularly limited. Therefore, it may be a case of mixing two types of liquids, or it may be a case of mixing four or more types of liquids. Additionally, the receiving portions 2, 7, and 12 do not necessarily need to be tanks, and may be bag-shaped such as pouches.

[0037] Next, in Figure 1, 22 is a mixing part for mixing the three liquids to create a three-liquid mixed paint, and 21 is a confluence part for combining the three liquids and passing them. In this embodiment, a manifold is used as a confluence section, and a static mixer is used as a mixing section. That is, in the paint supply system of this embodiment, the main tank 2, the hardener tank 7, and the dilution thinner tank 12 are connected to the static mixer 22 through the inside of the manifold 21, The main agent in the tank 2, the hardener in the hardener tank 7, and the thinner for dilution in the dilution thinner tank 12 join within the manifold 21 and pass through the manifold 21 to the static mixer 22. ) and are mixed in the process of passing through the static mixer 22 to produce a three-liquid mixed paint. However, the mixing unit does not necessarily need to be a static mixer, and any means capable of mixing a plurality of liquids may be used.

[0038] Here, to explain the method of mixing the three liquids, the main tank 2 is connected to the main valve 5 in the manifold 21 through the main supply hose 3. It is connected, and a diaphragm pump (4) is disposed on the main supply hose (3). Accordingly, by driving the diaphragm pump 4 with the main agent valve 5 opened, the main agent in the main agent tank 2 passes through the inside of the manifold 21 and is sent into the static mixer 22. . However, it is not necessary to use a diaphragm pump, and other pumps such as syringe pumps may be used.

[0039] In addition, in the drawing, 6 is a main circulation hose. That is, in this embodiment, a three-way valve is used as the main valve 5, and when the main agent is sent to the static mixer 22, the main agent valve 5 as the three-way valve is used. When the main supply hose (3) and the manifold (21) are connected and the main ingredient is not delivered to the static mixer (22), the main supply hose (3) and the manifold (21) are connected by the main agent valve (5). ) is disconnected, and the subject supply hose (3) is connected to the subject circulation hose (6), so that the subject in the subject tank (2) is supplied to the subject supply hose (3) and the subject supply pump (4). , it is circulated to the main tank 2 through the main valve 5 and the main circulation hose 6. Accordingly, when the base material is not sent to the static mixer 22, aggregates such as pearls contained in the base material are prevented from settling on the bottom of the base tank 2. However, the hose for circulating the base material (6) is not absolutely necessary. For example, when the base material is a paint that does not contain aggregate, even when the base material is not discharged to the static mixer 22, there is no need to circulate the base material. The circulation hose (6) is unnecessary.

[0040] Next, the curing agent tank 7 is connected to the curing agent supply valve 11 in the manifold 21 through a curing agent supply hose 8. That is, the base end of the hardener supply hose 8 is located in the hardener tank 7, and the tip of the hardener supply hose 8 is the hardener supply valve in the manifold 21 ( 11).

[0041] Additionally, on the island of the curing agent supply hose 8, a curing agent supply syringe 9 is disposed as a pump for supplying the curing agent in the curing agent tank 7 to the static mixer 22. That is, the hardener supply hose 8 has a portion between the hardener supply syringe 9 and the hardener supply valve 11, and a portion between the hardener supply syringe 9 and the hardener tank 7. Have. Additionally, a curing agent charging valve 10 is disposed in the portion between the curing agent supply syringe 9 and the curing agent tank 7 in the curing agent supply hose 8.

[0042] Here, with reference to FIG. 2, to describe the syringe 9 for supplying the curing agent, FIG. 2 is a diagram for explaining the syringe 9 for supplying the curing agent, and in the drawing, the 9-valent curing agent This is a syringe for supply. In FIG. 2, the syringe 9 for supplying the hardener has a syringe body 23, which has a cylindrical shape with a closed end and a tip end. A paint discharge port is formed, and a hardener supply hose 8 connected to the hardener supply valve 11 is connected to the paint discharge port.

[0043] In addition, a piston 24 is inserted into the syringe body 23 so that it can move forward and backward, and a piston rod 25 is connected to the side of the piston 24 opposite to the paint discharge port. there is.

[0044] In addition, a charging path 26 is formed inside the piston rod 25, and a charging port 27 continuous to the charging path 26 is formed in the piston 24. And a curing agent supply hose 8 whose base end is disposed in the curing agent tank 7 is connected to the charging path 26 through the curing agent charging valve 10.

[0045] With this configuration, the piston 24 is moved to the rear side of the syringe body 23 in a state in which the curing agent charging valve 10 is opened and the curing agent supply valve 11 is closed. When the inside of the syringe body 23 is subjected to negative pressure, the hardener tank is supplied through the hardener supply hose 8, the hardener charging valve 10, the filling path 26, and the filling port 27. It becomes possible to fill the syringe body 23 with the curing agent in (7).

[0046] In a state in which the curing agent is filled in the syringe body 23, the curing agent charging valve 10 is closed and the curing agent supply valve 11 is opened, and the piston 24 is By pushing the curing agent into the distal end of the syringe body 23, it is possible to send the curing agent inside the syringe body 23 to the static mixer 22 by passing through the manifold 21.

[0047] Also, here, to explain the mechanism for moving the piston 24, in FIG. 2, in this embodiment, an operating plate 28 is attached to the piston rod 25, and the operating plate ( 28) is screwed to the ball screw 29, and the ball screw 29 is connected to the shaft of the motor 30 as a driving means. And, with this configuration, the motor 30 is driven to rotate the ball screw 29, thereby causing the operating plate 28 to reciprocate at a constant speed along the ball screw 29, thereby, The piston 24 is allowed to advance and retreat within the syringe body 23 via the piston rod 25.

[0048] In addition, any pump may be used as the pump for delivering the curing agent in the curing agent tank 7 to the static mixer 22, and it is not necessary to use a syringe pump. Therefore, for example, a diaphragm pump or the like may be used.

[0049] In addition, even in the case of using a syringe pump, it is not necessarily necessary to use a syringe of the above-described configuration. Therefore, using the piston rod 25 without the charging passage 26 and the piston 24 without the charging port 27, the curing agent is injected into the syringe body 23 from the tip of the syringe body 23. You can also just recharge it. In this case, for example, like the main valve 5, a three-way valve is used as the hardener supply valve 11, the hardener charging valve 10 is eliminated, and the hardener supply hose 8 is used. The tip of the portion between the curing agent supply syringe (9) and the curing agent tank (7) is connected to the curing agent supply valve (11), and by switching the curing agent supply valve (11), the curing agent supply syringe It is sufficient to perform the filling of the curing agent into (9) and the delivery of the curing agent in the syringe body (23) to the static mixer (22).

[0050] Next, the dilution thinner tank 12 is connected to the dilution thinner supply valve 16 in the manifold 21 through a dilution thinner supply hose 13. That is, the base end of the dilution thinner supply hose 13 is located in the dilution thinner tank 12, and the tip of the dilution thinner supply hose 13 is located in the dilution thinner tank 12. It is connected to the thinner supply valve (16).

[0051] In addition, on the dilution thinner supply hose 13, a dilution thinner supply syringe 14 for supplying the dilution thinner in the dilution thinner tank 12 to the static mixer 22. is placed. That is, the dilution thinner supply hose 13 includes a portion between the dilution thinner supply syringe 14 and the dilution thinner supply valve 16, and the dilution thinner supply syringe 14 and the dilution thinner supply syringe 14. It has a part between the thinner tank (12). In addition, a dilution thinner filling valve 15 is disposed in the dilution thinner supply hose 13 between the dilution thinner supply syringe 14 and the dilution thinner tank 12. .

[0052] In addition, the configuration of the diluting thinner supply syringe 14 is the same as the hardener supply syringe 9 described above, and the paint discharge port is provided at the tip of the cylindrical syringe body 23 with the tip closed. A dilution thinner supply hose 13 connected to a dilution thinner supply valve 16 is connected to this paint discharge port, and within the syringe body 23, a piston 24 is provided to enable forward and backward movement. It is inserted and installed, and a piston rod 25 is connected to the piston 24. In addition, a charging passage 26 is formed inside the piston rod 25, a charging port 27 is formed in the piston 24 and is continuous with the charging passage 26, and a dilution passage is formed in the charging passage 26. A diluting thinner supply hose 13 whose base end is disposed in the diluting thinner tank 12 is connected through the thinner charging valve 15.

[0053] Furthermore, as shown in FIG. 2, an operating plate 28 screwed to a ball screw 29 connected to the axis of the motor 30 is attached to the piston rod 25, thereby operating the motor 30. By driving and rotating the ball screw 29, the operation plate 28 is reciprocated along the ball screw 29 at a constant speed, thereby moving the piston 24 to the syringe body through the piston rod 25. It is possible to advance or retreat within (23).

[0054] With this configuration, the piston 24 is installed in the syringe body 23 in a state in which the dilution thinner charging valve 15 is opened and the dilution thinner supply valve 16 is closed. By moving it to the rear side and creating negative pressure inside the syringe body 23, the dilution thinner supply hose 13, dilution thinner charging valve 15, filling path 26, and filling port 27 are closed. Through this, it becomes possible to fill the syringe body 23 with the dilution thinner in the dilution thinner tank 12.

[0055] Then, with the dilution thinner filled in the syringe body 23, the dilution thinner charging valve 15 is closed, the dilution thinner supply valve 16 is opened, and the piston ( By pushing 24) into the tip side of the syringe body 23, it is possible to send the thinner for dilution in the syringe body 23 through the inside of the manifold 21 to the static mixer 22. .

[0056] Accordingly, in a state in which the curing agent syringe (9) is filled with the curing agent and the diluting thinner syringe (14) is filled with the diluting thinner, the main supply pump (4) is driven at the same time. By pushing the piston 24 of the curing agent syringe 9 and the diluting thinner syringe 14 toward the tip side of the syringe body 23, the base material, curing agent, and diluting thinner are manifolded. While merging within the fold 21, it passes through the manifold 21 and is sent into the static mixer 22, and is mixed in the process of passing through the static mixer 22, making it possible to produce a three-liquid mixed paint.

[0057] In addition, as in the case of the pump for delivering the curing agent to the static mixer 22, the pump for delivering the dilution thinner to the static mixer 22 does not necessarily need to use a syringe pump, and any pump You may use, for example, a diaphragm pump, etc.

[0058] In addition, as in the case of a pump for delivering the curing agent to the static mixer 22, also in the case of using a syringe pump as a pump for delivering the dilution thinner to the static mixer 22, the above-described configuration must be used. There is no need to use a syringe. Therefore, by using the piston rod 25 without the filling passage 26 and the piston 24 without the filling port 27, the dilution is carried out from the tip of the syringe body 23 into the syringe body 23. You can also recharge the thinner. In this case, for example, like the curing agent supply valve 11, a three-way valve is used as the dilution thinner supply valve 16, and the dilution thinner charging valve 15 is eliminated, and the dilution thinner supply valve 16 is used. The tip of the hose 13 between the dilution thinner supply syringe 14 and the dilution thinner tank 12 is connected to the dilution thinner supply valve 16 to supply dilution thinner. By switching the dilution valve 16, the dilution thinner is filled into the dilution thinner supply syringe 14 and the dilution thinner in the syringe body 23 is fed to the static mixer 22. .

[0059] Next, in the drawing, 17 is a cleaning thinner tank that stores cleaning thinner, and this cleaning thinner tank 17 is connected to the manifold 21 by a cleaning thinner supply hose 18. ) is connected to the valve 20 for supplying thinner for cleaning. That is, the base end of the cleaning thinner supply hose 18 is located in the cleaning thinner tank 17, and the tip of the cleaning thinner supply hose 18 is connected to the cleaning thinner supply hose 18 in the manifold 21. It is connected to the supply valve (20).

[0060] In addition, on the hose 18 for supplying the cleaning thinner, there is a pressure pump 19 for supplying the cleaning thinner for supplying the cleaning thinner in the cleaning thinner tank 17 to the manifold 21. is placed. That is, the cleaning thinner supply hose 18 is connected to a portion between the cleaning thinner supply pressure pump 19 and the cleaning thinner supply valve 20, and the cleaning thinner supply pressure pump 19 and the cleaning thinner supply hose 18. It has a part between the thinner tank (17).

[0061] Accordingly, by the main supply valve (5), the hardener supply valve (11) and the dilution thinner supply valve (16), the main supply hose (3) and the hardener supply hose (8) And the connection between the hose for supplying thinner for dilution (13) and the manifold (21) is disconnected, and the valve for supplying thinner for cleaning (20) is opened, and the pressure pump (19) for supplying thinner for cleaning is driven. By doing so, the thinner for cleaning is supplied to the manifold 21 and the static mixer 22, making it possible to clean the inside of the manifold 21 and the static mixer 22.

[0062] In addition, the manifold 21 is a circuit for receiving three liquids, a base material, a hardener, and a thinner for dilution, and supplying the three liquids received to the static mixer 22, and the three liquids It is sufficient as long as it is possible to supply it to the static mixer 22 while passing it through, and the structure is not particularly limited.

[0063] Next, in the drawing, 31 is a main syringe for temporarily storing the three-liquid mixed paint produced in the static mixer 22 and then supplying the once stored three-liquid mixed paint to the spray gun. . That is, in the paint supply system of this embodiment, unlike the conventional method of supplying the multi-liquid to the spray gun in real time while mixing in a static mixer, the three-liquid mixed paint produced in the static mixer is charged into the main syringe and temporarily stored. , Afterwards, a method of supplying the three-liquid mixed paint in the main syringe 31 stored once to the spray gun is adopted.

[0064] As described above, in this embodiment, since two spray guns are provided, two main syringes 31 are also provided, and each main syringe 31 and the spray gun 36 is connected to the paint supply hose 35. Accordingly, the three-liquid mixed paint produced in the static mixer is charged into the two main syringes 31, and thereafter, from each main syringe 31. A three-liquid mixed paint is supplied to the spray gun 36.

[0065] That is, the base end of the paint charging hose 32 is connected to the discharge side of the static mixer 22. In this embodiment, which has two main syringes 31, the paint charging hose 32 is branched into two systems after being connected to the static mixer 22, and each branched system is divided into two systems. The main syringe 31 is connected to the distal end.

[0066] In addition, a paint charging valve 33 is disposed between the static mixer 22 and the main syringe 31. In this embodiment, the paint charging valve 33 is a paint charging hose. It is arranged after the branched portion in (32) and between the main syringe (31), and therefore, like the main syringe (31), it is made of two.

[0067] Accordingly, the paint charging hose 32 includes a base end paint charging hose 32a constituting a portion between the paint charging valve 33 and the static mixer 22, and a paint charging valve 33. ) and a distal end side paint filling hose 32b constituting the portion between the main syringe 31.

[0068] In addition, a paint supply valve 34 is disposed on the discharge side of the main syringe 31, and accordingly, the paint is filled into the main syringe 31 and the filled paint is supplied to the spray gun. A change in supply is possible.

[0069] In addition, the configuration of the main syringe 31 is the same as the syringe 9 for supplying the hardener and the syringe 14 for supplying the diluting thinner described above, and is composed of a cylindrical syringe body with a closed tip ( A paint discharge port is formed at the tip of 23), and a paint supply hose 35 is connected to this paint supply valve 34. Then, a piston 24 is inserted into the syringe body 23 to enable forward and backward movement, and a piston rod 25 is connected to the piston 24. In addition, a charging path 26 is formed inside the piston rod 25, a charging port 27 is formed in the piston 24 and is continuous with the charging path 26, and the charging path 26 has a tip. The side paint charging hose 32b is connected.

[0070] With the above configuration, the piston 24 is moved to the rear side of the syringe body 23 in a state in which the paint charging valve 33 is opened and the paint supply valve 34 is closed. , by creating a negative pressure inside the piston body 24, the three-liquid mixed paint produced in the static mixer 22 can be filled into the syringe body 23 of the main syringe 31.

[0071] Next, with the three-liquid mixed paint filled in the main syringe 31, the paint charging valve 33 is closed, the paint supply valve 34 is opened, and the piston 24 By moving to the tip side of the syringe body 23, it becomes possible to supply the three-liquid mixed paint in the main syringe 31 to the spray gun 36.

[0072] Here, with reference to FIG. 3, the method of advancing and retracting the piston 24 in the main syringe 31 will be described. In FIG. 3, a ball screw ( 29) is connected, and a movable base 37 is screwed to the ball screw 29, so that the motor 30 is driven to rotate the ball screw 29, so that the movable base 37 moves along the ball screw 29. (37) is assumed to move round and round.

[0073] In the drawing, 39 is an attachment base, and a guide 38 is erected on the attachment base 39, and the guide 38 penetrates the movable base 37. Accordingly, the movable base 37 is capable of reciprocating movement along the guide 38.

[0074] On the other hand, an operation plate 28 is attached to each of the piston rods 25 of the two main syringes 31, and this operation plate 28 is fixed to the movable base 37. It is done. Accordingly, the ball screw 29 is rotated by driving the motor 30 to reciprocate each movable base 37, thereby moving the piston rod 25 through the operation plate 28, and the piston ( 24) is capable of advancing and retreating within the syringe body 23.

[0075] And at this time, in this embodiment, the operating plate 28 attached to the piston rod 25 of each main syringe 31 is fixed to the movable base 37, and accordingly, the motor 30 ), the pistons 24 of the two main syringes can be reciprocated at the same time with the same stroke, making it possible to discharge the multi-liquid mixed paint with high precision at the same discharge amount from the two spray guns 36.

[0076] In addition, the syringe for supplying the hardener, the syringe for supplying the thinner for dilution, and the main syringe do not necessarily have to be used in the above-described manner, but are filled with the hardener, thinner for dilution, and multi-liquid mixed paint, and then supplied. If possible, any configuration may be used. For example, in the configuration shown in FIG. 4, the syringe body 23 has a filling port 40 and a discharge port 41 on the distal end side, and the paint is discharged into the syringe body through the inside of the piston rod 25 as described above. Unlike the filling method, the paint is filled directly into the syringe body 23 from the filling port 40, and the paint inside the syringe body 23 is discharged from the discharge port 41. This configuration It's okay to continue.

[0077] Next, let us explain the method of supplying the three-liquid mixed paint to the spray gun using the paint supply system 1 of this embodiment configured as described above. In the method of supplying the three-liquid mixed paint of this embodiment, First, by the method described above, the required amount of curing agent is filled into the curing agent supply syringe 9 and the dilution thinner supply syringe 14 is filled with the required amount of dilution thinner.

[0078] That is, in a state in which the hardener charging valve 10 is opened and the hardener supply valve 11 is closed, the piston 24 of the hardener supply syringe 9 is connected to the syringe body 23. By moving to the rear side and creating negative pressure inside the syringe body 23, the curing agent is filled into the syringe body 23. At the same time, with the dilution thinner charging valve 15 opened and the dilution thinner supply valve 16 closed, the piston 24 of the dilution thinner supply syringe 14 was loaded. By moving to the rear side of the syringe body 23 and creating a negative pressure inside the syringe body 23, the thinner for dilution is filled into the syringe body 23.

[0079] After that, the base material, curing agent, and thinner for dilution are passed through the manifold 21 and sent to the static mixer 22, and mixed in the static mixer 22 to produce a three-liquid mixed paint. Next, the resulting three-liquid mixed paint is filled into the main syringe 31 and temporarily stored in the main syringe. Then, the three-liquid mixed paint stored in the main syringe 31 is supplied to the spray gun.

[0080] First, let us explain how to create a three-liquid mixed paint and fill the main syringe with the produced three-liquid mixed paint. In preparation of the main syringe (31), open the paint charging valve (33). and close the paint supply valve 34.

[0081] In addition, using a three-way valve as the main valve (5), the main supply hose (3) and the manifold (21) are connected, and the hardener charging valve (10) is closed while the hardener supply valve is closed. (11) is opened, the dilution thinner charging valve (15) is closed, and the dilution thinner supply valve (16) is opened.

[0082] Next, in that state, the main body pump (4) is driven to send the main substance to the static mixer (22) while passing through the manifold (21). At the same time, the piston 24 of the syringe 9 for supplying the hardener and the syringe 14 for supplying the dilution thinner is moved to the tip side, so that the hardener and the thinner for dilution in the syringe body are transferred to the manifold 21. ) while passing through the inside, it is sent to the static mixer (22). Furthermore, the piston 24 of the main syringe 31 is moved rearward to create negative pressure inside the syringe body 23. Then, the base material, hardener, and diluting thinner sent to the static mixer 22 pass through the static mixer 22 and are mixed during the passage, creating a three-liquid mixed paint within the static mixer 22. . Then, the three-liquid mixed paint generated in the process of passing through the static mixer 22 is filled into the syringe body 23 of the main syringe 31 under negative pressure.

[0083] Also, in this case, the main syringe (31) is filled in the syringe (9) for supplying the hardener and the syringe (14) for supplying the diluting thinner so that an appropriate amount of three-liquid mixed paint can be filled with a certain formulation. The amount of hardener and thinner for dilution to be determined is determined in advance, and at the same time, the driving time of the main supply pump (4), the syringe for supply of hardener (9) and the syringe for supply of thinner for dilution ( The moving distance of the piston 24 in step 14) is determined in advance. Therefore, for this purpose, a syringe 9 for supplying the hardener, a syringe 14 for supplying diluting thinner, a motor 30 for driving the piston 24 of the main syringe 31, or a pump for supplying the main syringe. (4), etc. are connected to the control means, and by the control means, the syringe 9 for supplying the hardener, the syringe 14 for supplying diluting thinner, and the piston 24 of the main syringe 31. It is sufficient to control the operation of the driving motor 30 or the main supply pump 4.

[0084] In addition, by making the inner diameter of the syringe body different, for example, by reducing the inner diameter of the syringe 9 for supplying a curing agent with a small addition capacity, the syringe for supplying the curing agent (9) ) of the curing agent is filled into the curing agent supply syringe (9) without making the moving distance of the piston (24) different from the piston moving distance of the diluting thinner supply syringe (14), and the static mixer (22) ) may be supplied in an appropriate amount.

[0085] Next, after filling the main syringe 31 with the three-liquid mixed paint in this way, the paint filling valve 33 is closed and the paint supply valve 34 is opened. And in that state, the piston 24 of the main syringe 31 is moved to the distal end side of the syringe body 23. Then, the three-liquid mixed paint in the main syringe (31) is supplied to the spray gun (36) through the paint supply hose (35).

[0086] In this way, in the paint supply system of this embodiment, the main syringe is connected to a mixing section for mixing a plurality of liquids to generate and discharge a multi-liquid mixed paint, and the multi-liquid mixed paint produced in the mixing section is connected to the main syringe. It is stored in the paper once, and then supplied to the spray gun from the main syringe.

[0087] Therefore, unlike the conventional system, which produces a multi-liquid mixed paint and supplies the produced multi-liquid paint to the spray gun in real time, using an automatic machine such as a painting robot, the spray gun is heated. Even in the case where the work is painted by repeatedly turning on and off, it is possible to keep the mixing ratio of the base material and additives such as hardener or thinner for dilution constant.

[0088] In addition, when filling the main syringe with the multi-liquid mixed paint mixed in the mixing section, the multi-liquid mixed paint is further mixed within the main syringe, so the plurality of liquids are mixed in a mixing means such as a static mixer in real time. Unlike the method of supplying paint to a spray gun, it is possible to achieve reliable mixing of multiple liquids even when the supply of paint is stopped by turning on/off the spray gun.

[0089] In addition, it is possible to keep the pressure of the paint supplied to the spray gun constant even when the spray gun is turned on and off, so there is no risk of stains forming on the painted surface.

[0090] In addition, as a means of supplying the three-liquid mixed paint to the spray gun, a main syringe, which is a syringe pump, is used to move the piston 24 of the main syringe 31 to the distal end of the syringe body 23. By moving, the three-liquid mixed paint in the main syringe 31 is supplied to the spray gun 36, so it is possible to keep the discharge amount of the paint supplied to the spray gun constant.

[0091] Furthermore, since a static mixer is used as the mixing section, it becomes possible to easily produce a mixed paint simply by passing a plurality of liquids through the static mixer.

[0092] In addition, the multi-liquid mixed paint produced in the static mixer is temporarily stored in the main syringe and supplied to the spray gun from the main syringe, and furthermore, as a pump for sending the hardener and thinner for dilution to the static mixer. Because a syringe is used, multi-liquid mixed paint can be supplied to the spray gun in fixed quantities, while hardener and thinner for dilution can also be delivered to the static mixer in fixed quantities, unlike conventional systems using pressure pumps. There is no need to use , so it is possible to keep costs down.

[0093] In addition, since the multi-liquid mixed paint produced in the static mixer is first charged into the main syringe and then supplied to the spray gun from the main syringe, even when the number of spray guns is increased, the static mixer There is no need to increase the cost, thereby preventing an increase in cost.

[0094] In addition, in this embodiment, since there is a main syringe corresponding to the number of spray guns, that is, since there are two spray guns and the number of main syringes is also two, the same discharge amount is obtained from the two spray guns. It is possible to discharge multi-liquid mixed paint with high precision.

[0095] In addition, in the above description, the case of mixing three liquids of base material, hardener, and thinner for dilution has been described. However, as described above, the present invention is not limited to a three-liquid mixed paint, and two liquids are mixed. This may be the case, or it may be the case of mixing 4 or more liquids.

[0096] Additionally, the type of liquid to be mixed is not particularly limited, and is not necessarily limited to mixing the base material, hardener, and thinner for dilution.

[0097] As described above, the number of spray guns is not particularly limited and may be one or three or more. In the case of providing a plurality of spray guns, the same number of main syringes and paint charging valves as the number of spray guns can be provided. Accordingly, by simultaneously driving the main syringes, two spray guns can be used as described above. It is possible to discharge multi-liquid mixed paint with high precision at the same discharge amount.

[0098] Furthermore, in the above description, the base material, hardener, and thinner for dilution are combined at the manifold 21 and sent to the static mixer 22, and mixed within the static mixer 22 and fed into the main syringe 31. ), and thus, the multi-liquid mixed paint is stored in the main syringe. However, without using a static mixer, the main syringe ( 31) You can charge it within 31).

[0099] In other words, the base material, hardener, and thinner for dilution are mixed to some extent in the process of passing through the manifold 21, and further, when filled in the main syringe 31, they are mixed to a certain extent in the main syringe 31. Because it is mixed, even if the main syringe (31) is filled directly with the base material, hardener, and thinner for dilution combined from the manifold (21) without using a static mixer, multiple liquids are mixed in the main syringe (31). It is possible to temporarily store the paint. At this time, the manifold does not necessarily have to be an independent part, and may be formed integrally with the main syringe (31), or may be a part that is attachable to and detachable from the main syringe (31).

[0100] On the other hand, without using the manifold 21, only the static mixer 22 is used to connect the base material supply hose 3, the hardener supply hose 8, and the diluting thinner supply hose 13. You can also connect it directly to the static mixer (22).

[0101] In addition, without using any of the manifold 21 and the static mixer 22, the main supply hose 3, the hardener supply hose 8, and the diluting thinner supply hose 13 are directly connected. By connecting to the main syringe (31), the base material, hardener, and thinner for dilution may be charged separately into the main syringe (31). In this case, the multi-liquid mixed paint is temporarily stored in the main syringe (31). It is possible. In other words, even if the main syringe, hardener, and dilution thinner are filled separately into the main syringe, they are mixed within the main syringe 31 when filled in the main syringe 31, so when charging is completed, It is possible to store the multi-liquid mixed paint in the main syringe 31.

[0102] In the multi-liquid paint supply system of the present invention and the multi-liquid paint supply method using the same, it is possible to reliably perform mixing while maintaining a certain mixing ratio in painting using a multi-liquid mixed paint produced by mixing a plurality of liquids. At the same time, because it makes it possible to keep the discharge amount of paint supplied to the spray gun constant, it can be applied to the entire paint supply system that supplies multi-liquid mixed paint.

[0103] 1: Paint supply system
2: Topic Tank
3: Main supply hose
4: Topic supply pump (diaphragm pump)
5: Main valve
6: Main circulation hose
7: Hardener tank
8: Hose for supplying hardener
9: Syringe for supplying hardener
10: Hardener charging valve
11: Hardener supply valve
12: Thinner tank for dilution
13: Hose for supplying thinner for dilution
14: Syringe for supplying thinner for dilution
15: Dilution thinner charging valve
16: Valves for supplying thinner for dilution
17: Thinner tank for cleaning
18: Hose for supplying thinner for cleaning
19: Pump for supplying thinner for cleaning
20: Valves for supplying thinner for cleaning
21: manifold
22: Static mixer
23: Syringe body
24: Piston
25: Piston rod
26: Charging furnace
27: Charging port
28: operating panel
29: ball screw
30: motor
31: main syringe
32: Hose for filling paint
32a: Hose for filling paint on the base side
32b: Hose for filling paint on the tip side
33: Valve for filling paint
34: Valve for paint supply
35: Hose for paint supply
36: Spray gun
37: Movable base
38: guide
39: Attachment base

Claims (9)

A supply method of a multi-liquid mixed paint for producing a multi-liquid mixed paint by mixing a plurality of liquids and supplying the produced multi-liquid mixed paint to one or a plurality of spray guns, comprising:
A plurality of receiving parts (2, 7, 12) for receiving liquid for producing a multi-liquid mixed paint,
Each of the receiving parts (2, 7, 12) is connected through a supply hose (3, 8, 13), and a manifold (21) for combining and passing the liquid in the receiving parts (2, 7, 12) ,
A static mixer (22) connected to the manifold (21) for mixing the liquids combined in the manifold (21),
A plurality of main syringes (31) connected to the static mixer (22) through a paint charging hose (32),
A paint charging valve (33) disposed on the paint charging hose (32),
Pumps (4, 9) for storing the multi-liquid mixed paint in the main syringe (31) by sending a plurality of liquids arranged on the supply hoses (3, 8, 13) to the main syringe (31), respectively. , 14),
The main syringe (31) is each,
A cylindrical syringe body 23 with a closed tip, a piston 24 inserted into the syringe body 23 so as to move forward and backward, and the piston 24 ), and a paint supply hose 35 for supplying a multi-liquid paint to the spray gun is connected through a paint supply valve 34 formed at the tip of the syringe body 23. It is provided with a paint discharge port, a charging port 27 formed in the piston 24, and a charging passage 26 formed in the piston rod 25 and connected to the charging port 27,
An operating plate 28 is attached to the piston rod 25, and the operating plate 28 is fixed to a movable base 37 screwed to a ball screw 29 connected to the shaft of the motor 30, By driving the motor 30 to rotate the ball screw 29 and reciprocate the movable base 37, it is possible to move the piston rod 25 through the operation plate 28 and reciprocate the piston simultaneously. Using a supply system for multi-liquid mixed paint,
By opening the paint charging valve 33 and simultaneously closing the paint supply valve 34 and driving the pumps 4, 9, and 14 in that state, the plurality of receiving portions 2, 7, The liquid inside 12) is delivered to the static mixer 22 while passing through the manifold 21, and at the same time, the piston 24 of each main syringe 31 is moved rearward to enter the inside of the piston body 24. By setting negative pressure, the liquid delivered to the static mixer 22 is mixed within the static mixer 22 to produce a multi-liquid mixed paint and filled into the syringe body 23 of the main syringe 31. do,
After that, the paint charging valve 33 is closed, the paint supply valve 34 is opened, and in that state, the piston 24 of the main syringe 31 is moved toward the distal end of the syringe body 23. A supply method of a multi-liquid mixed paint, characterized in that the multi-liquid mixed paint in the main syringe (31) is supplied to the spray gun through the paint supply hose (35) by moving it. According to paragraph 1,
A method of supplying a multi-liquid mixed paint, characterized in that at least one of the pumps (4, 9, 14) disposed on the supply hose (3, 8, 13) is a syringe pump. According to paragraph 1,
A method of supplying a multi-liquid mixed paint, characterized in that at least one of the pumps (4, 9, 14) disposed on the supply hose (3, 8, 13) is a diaphragm pump.
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