JP2004313859A - Mixed coating applicator for fluid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixed coating applicator for fluids which obtains a uniform mixture by matching the timing at which the at least two fluids are supplied to a mixer. <P>SOLUTION: The a mixed coating applicator is constituted to mix the at least two fluids and to apply the mixture to a material to be coated and has the mixer 21, a first metering pump 13 for feeding the first fluid MA to the mixer 21, and a second metering pump 14 for feeding the second fluid MB to the mixer 21. The mixer 21 has a mixing head section 212 having a first injection port 216 for the first fluid MA and a second injection port 217 for the second fluid MB, a mixing section 211 for mixing the fluids and a nozzle 214 for applying the mixture to the material to be coated and is formed movable at the time of coating application of the mixture. The first metering pump 13 and the second metering pump 13 are fixedly attached to the mixing head section 212 and are integrated with the mixer 21 so as to move as the mixer 21 moves. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for applying a sealing material, applying a paint, applying an adhesive, and mixing and applying two or more kinds of fluids.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, two or more fluids are generally continuously mixed by a mixer. For example, as a mixing device used for applications such as continuously mixing a resin as a main agent and a curing agent as a second agent and supplying the same to the next step, the first fluid is continuously pumped to a mixer, An apparatus for intermittently or continuously pumping the second fluid to the mixer is prepared (see Patent Document 1, Non-Patent Documents 1 and 2).
[0003]
When the resin and the curing agent are mixed and used in such an apparatus, since the curing of the resin proceeds and is completed in a short time after being mixed, the mixture discharged from the mixer is directly applied to the substrate. Often applied. For example, Patent Document 2 discloses that in a step of applying a coating material for a magnetic layer used for manufacturing a magnetic recording medium to a non-magnetic support, the coating material and the hardener liquid are separately mixed by a metering pump by a mixer (mixer in a flow path). ) Is described, wherein the mixture is extruded from an extrusion nozzle connected to a mixer and applied to a non-magnetic support.
[0004]
Patent Document 3 discloses that in a sealing material used for an electronic component such as a semiconductor, a liquid epoxy resin and a curing agent are supplied to a mixer (mixing / discharging machine) by a metering pump, and are continuously mixed. Which is manufactured by immediately discharging a mixture from a mixer (mixing and discharging machine) to a cooling conveyor.
[0005]
On the other hand, it is a device that mixes two liquids and applies it to the object immediately after mixing, and the mixer part is not fixed to the device main body as in the device described above, but has a complicated shape of the object to be coated, A portable hand-gun type mixer capable of flexibly coping with frequent changes of an object to be applied or an applied portion is provided (see Non-Patent Document 3). A hand-gun type mixer that can be attached to a robot and is easily automated is also commercially available (see Non-Patent Document 3).
[0006]
In such a portable mixer, a resin, a curing agent, and the like are supplied from a metering pump to a mixer through a flexible tube or the like, mixed, and the mixture is applied to an object to be coated.
[0007]
FIG. 8 shows a configuration of a conventional mixing and coating apparatus 8 which mixes a resin and a curing agent using a movable mixer 91 attached to a robot or the like and discharges the mixture toward an object to be coated. In FIG. 8, a resin and a curing agent are supplied from a storage tank 81 and a storage tank 82 to a mixer 91 via flexible tubes 87 and 88 by plunger type metering pumps 83 and 84, respectively. Switching of the flow path at the time of suction and discharge of the metering pump 83 for supplying the resin and the metering pump 84 for supplying the curing agent is performed by check valves 92 to 95 provided respectively in the suction flow path and the discharge flow path. Is The resin and the curing agent are supplied from the respective metering pumps 83 and 84 to the mixer 91 via automatic valves 96 and 97 attached to the mixer 91, and are mixed. The mixture is discharged from the nozzle 98 toward the object to be coated.
[0008]
The automatic valves 96 and 97 are controlled so as to close when the metering pumps 83 and 84 inhale, and to open when they discharge.
[0009]
[Patent Document 1]
Japanese Patent Application Laid-Open No. Hei 10-337559 (paragraph number 0007, FIG. 1)
[0010]
[Patent Document 2]
JP-A-2002-86047 (paragraph number 0005, FIG. 1)
[0011]
[Patent Document 3]
JP-A-11-152394 (paragraph 0012, FIG. 1)
[0012]
[Non-patent document 1]
Taiyo Techno Co., Ltd. Dispenser System Department, Vario Mix 1S / 2S, [Searched March 14, 2003], Internet <URL: http: // www. fa-mart. co. jp / taiyo-techno / 3-02-01. html>
[0013]
[Non-patent document 2]
Taiyo Techno Co., Ltd. Dispenser System Dept., Vario Mix 1A / 2A, [retrieved on March 14, 2003], Internet <URL: http: // www. fa-mart. co. jp / taiyo-techno / 3-01-01. html>
[0014]
[Non-Patent Document 3]
Graco Inc., 2K Ultra-Lite Valve [searched on March 14, 2003], Internet <URL: http: // www. graco. co. jp / industrial / pdfs / 5016. pdf>
[0015]
[Problems to be solved by the invention]
When the mixing and coating apparatus 8 shown in FIG. 8 is incorporated into a line as a production facility instead of a test purpose, replenishment of the storage tanks 81 and 82 with a resin and a curing agent is facilitated, and workability of maintenance of the mixer 91 and the like is improved. In order to increase the height, the storage tanks 81 and 82 and the metering pumps 83 and 84 are often installed at a location away from the mixer 91. In that case, the flexible tubes 87 and 88 are long, for example, about 3 to 10 m so that the mixer 91 can be easily moved.
[0016]
Generally, the viscosity of a resin is extremely higher than that of a curing agent, and the compounding ratio of the resin is several to several tens times larger than that of the curing agent. Therefore, when the long flexible tubes 87 and 88 are used, the discharge pressure of the metering pumps 83 and 84 at the time of the mixing application operation is much higher for the resin than for the curing agent.
[0017]
Therefore, even if the metering pumps 83 and 84 start discharging at the same time due to the difference in the degree of liquid compression generated between the resin and the curing agent due to the difference in the discharge pressure, the difference in the degree of expansion of the flexible tubes 87 and 88, etc. The timing at which the resin and the curing agent are supplied to the mixer 91 may be slightly different.
[0018]
Furthermore, if air, which is a compressible fluid, remains in the flexible tubes 87 and 88, the difference in the timing may be further increased.
[0019]
If there is a difference between the timing at which the supply of the resin and the curing agent to the mixer 91 is started, the mixing ratio of these components in the mixture may change with time. If there is a change in the mixing ratio over time, uncured portions are included in the mixed, discharged and applied resin, and the cured resin has a variation in hardness.
[0020]
The present invention has been made in view of the above-described problems, and has as its object to provide a fluid mixing and coating apparatus that obtains a uniform mixture by making at least two fluids supplied to a mixer at the same timing. I do.
[0021]
[Means for Solving the Problems]
A fluid mixing and coating apparatus according to the present invention is a mixing and coating apparatus that mixes at least two fluids, a first fluid and a second fluid, and applies the mixture to an object to be coated. , A first metering pump for supplying the first fluid to the mixer, and a second metering pump for supplying the second fluid to the mixer, wherein the mixer comprises the first A mixing head having a first injection port for receiving the first fluid and a second injection port for receiving the second fluid; and the first fluid supplied via the mixing head. A mixing unit for mixing the second fluid, a nozzle for applying the mixture to an object to be coated, and a movable unit for applying the mixture, wherein the first fixed amount Pump and said second constant Pump, the mixing head portion fixedly attached to, are integral to the mixer so as to move with the movement of the mixer.
[0022]
Further, in another mixing and coating apparatus for a fluid according to the present invention, the mixer includes a flow path for sending the first fluid from a tank to the first metering pump and the first fluid for the first fluid. A first switching valve for switching a flow path from the first metering pump to the mixer, a flow path for feeding the second fluid from the tank to the second metering pump, and a second flow valve for the second fluid. A second switching valve for switching a flow path from the second metering pump to the mixer is mounted in contact with the mixer, and the first switching valve is mounted in contact with the first metering pump, The second switching valve is provided with and attached to the second metering pump.
[0023]
Preferably, the mixing head has a substantially rectangular shape in plan view, the first injection port and the second injection port are open on the same surface of the mixing head, and The first switching valve and the second switching valve are attached in contact with the surface.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a diagram showing a configuration of a coating system TS using a mixing and coating apparatus 1 according to an embodiment of the present invention, FIG. 2 is a front view of the mixing and coating apparatus 1, and FIG. FIG. 4 is a plan view of the mixing and coating apparatus 1.
[0025]
In FIG. 1, the coating system TS includes storage tanks 11 and 12, a mixing and coating apparatus 1, and flexible tubes 19 and 20 that fluidly connect between them.
The storage tank 11 stores the main agent MA. The storage tank 12 stores the curing agent MB. The storage tanks 11 and 12 have a pressure-resistant structure, and the main agent MA or the curing agent MB can be pushed out by a pressurized gas, for example, compressed air supplied to an upper space inside the storage tanks 11 and 12. In particular, since the main agent MA has a high viscosity, the main agent MA can be smoothly supplied from the storage tank 11 to the metering pump 13 by the pressurized gas. The storage tanks 11 and 12 can be provided with a liquid level meter for detecting the liquid level of the main agent MA or the hardener MB, and a jacket or a coil for heating and cooling the main agent MA or the hardener MB.
[0026]
The mixing / coating apparatus 1 includes fixed amount pumps 13 and 14, driving units 15 and 16, switching valves 17 and 18, flexible tubes 19 and 20, a mixer 21, and the like.
The metering pump 13 supplies the main agent MA to the mixer 21, and the metering pump 14 supplies the curing agent MB to the mixer 21.
[0027]
Hereinafter, in particular, the metering pump 13, the drive unit 15, and the switching valve 17 will be described with reference to FIG. In addition, the description of the metering pump 14, the drive unit 16, and the switching valve 18 for the curing agent MB corresponding to these devices is omitted, but the specifications such as the handling amount also differ for the devices that handle the omitted curing agent MB. Only the basic configuration is the same as the device that handles the main agent MA.
[0028]
The metering pump 13 is a plunger type pump, and the plunger 131 reciprocates inside the cylinder 132. The cylinder 132 has a rectangular parallelepiped shape having a substantially square shape in a plan view, and the cover 133 on the backward end side has an inlet / outlet port (not shown) for connecting the metering pump 13 to the switching valve 17 and a base material communicating with the inlet / outlet port. A flow path 134 is provided. On the forward end side of the cylinder 132, a gland packing 135 and a packing retainer 136 for sealing the inside of the cylinder 132 are provided. A pump base 137 is attached to the forward end of the cylinder 132. The pump base 137 has a through hole 138 through which the plunger 131 passes. A cylindrical bush made of resin or the like having self-lubricating properties is fitted into the through-hole 138 to reduce the sliding resistance of the plunger 131 against the outer peripheral surface while preventing the plunger 131 from swinging. . A projecting portion 139 projecting in one direction perpendicular to the axis of the plunger 131 is provided at the forward end of the pump base 137. The drive unit 15 is fixed to the overhang portion 139.
[0029]
The drive unit 15 has a servomotor 151 and a ball screw (not shown) provided inside the case 152. One end of the screw shaft of the ball screw is connected to a shaft (not shown) of the servomotor 151. An output rod 153 is connected to a nut (not shown) screwed to the screw shaft. The output rod 153 reciprocates with the axial reciprocation of the nut due to the rotation of the screw shaft. The structure and operation of such driving units 15 and 16 are known. For example, a commercially available electric cylinder can be used as the drive units 15 and 16.
[0030]
The drive unit 15 is attached to the overhang 139 with bolts so that the output rod 153 and the plunger 131 of the metering pump 13 are parallel. The output rod 153 and the forward end of the plunger 131 are connected by a connecting member 154 and move integrally.
[0031]
The plunger 131 of the metering pump 13 reciprocates with the reciprocating motion of the output rod 153 of the drive unit 15, whereby the metering pump 13 sucks and discharges the main agent MA.
[0032]
FIG. 5 shows an example of an operation time chart of the metering pumps 13 and 14 in the mixing and coating apparatus 1. The step in which the discharge speed is negative in FIG. 5 is a step of sucking the main agent MA into the cylinder 132 in the case of the metering pump 13 (hereinafter, “suction step”). The timing at which the metering pumps 13 and 14 start supplying the main agent MA and the curing agent MB to the mixer 21 and the timing at which the supply ends are set to be always the same in order to keep the mixture ratio of the mixture constant.
[0033]
Further, the stroke volume of the metering pump 13 and the stroke volume of the metering pump 14 are formed such that these ratios become the mixing ratio of the main agent MA and the curing agent MB.
The switching valve 17 has a receiving port 171 to which the flexible tube 19 is connected, a discharge port (not shown) connected to the mixer 21, and a common port (not shown) connected to the metering pump 13.
[0034]
The switching valve 17 internally connects the receiving port 171 and the common port in the suction process, and connects the common port and the discharge port in the process of discharging the main agent MA by the metering pump 13 (hereinafter, “discharge process”). This is a three-way valve that slides the internal spool by pneumatic drive.
[0035]
The switching valve 17 has a rectangular parallelepiped shape as shown in FIGS.
The flexible tubes 19 and 20 are for supplying the main agent MA and the curing agent MB from the storage tanks 11 and 12 to the metering pumps 13 and 14, respectively. The flexible tubes 19 and 20 are connected to receiving ports 171 and 181 of the switching valves 17 and 18 by joints. Fluororesin tubes such as PFA are used for the flexible tubes 19 and 20. In place of the fluororesin tube, a pressure-resistant rubber tube made of a material that is chemically inert to the main agent MA and the curing agent MB may be used.
[0036]
Referring to FIGS. 3, 6, and 7, mixer 21 includes mixing section 211, head section 212, and motor 213.
The mixing section 211 is composed of a cylindrical casing that is longer in the axial direction than its diameter, and a rotating blade 220 that has spiral blades that are substantially the same length as the casing. The rotating blade 220 can be rotated by a motor 213. However, the rotating blade 220 has a shape that functions sufficiently as a static mixer even if it only allows the fluid to pass through the mixing unit 211 without rotating. Although both the casing and the rotary blade 220 are made of resin, both may be formed using a metal material.
[0037]
The mixing unit 211 is attached to the head unit 212. A female screw is provided on the inlet side of the mixing unit 211, that is, on the upstream end as a static mixer. The mixing section 211 is attached to the head section 212 by screwing the female screw to a male screw of a protruding tube section provided on the head section 212. Therefore, when local curing of the resin due to poor mixing or the like progresses in the mixing section 211 and it becomes difficult to perform good mixing, the entire mixing section 211 can be easily replaced. The main agent MA and the curing agent MB are supplied to the mixing section 211 via the head section 212. In the mixing section 211, the main agent MA and the curing agent MB move toward the downstream end of the mixing section 211 while mixing. The downstream end is a nozzle 214 having a thin tip. The mixture of the main agent MA and the curing agent MB mixed in the mixing section 211 is discharged from the nozzle 214 and applied to the object.
[0038]
As shown in FIG. 7, the head section 212 has a substantially rectangular shape in plan view. The head portion 212 has a first injection port 216 for receiving the main agent MA from the switching valve 17 and a second injection port 217 for receiving the curing agent MB from the switching valve 18 on the same surface 221 (hereinafter referred to as “front surface”). 221 "). Further, inside the head portion 212, flow paths 218 and 219 for separately introducing the main agent MA and the curing agent MB from the first injection port 216 and the second injection port 217 to the mixing section 211 are provided. Have been.
[0039]
The main agent MA and the curing agent MB join at the mixing unit 211 via the discharge port UTA of the flow path 218 and the discharge port UTB of the flow path 219.
In addition, a rotating shaft connecting the shaft of the motor 213 and the rotating blade 220 penetrates through the head portion 212.
[0040]
The motor 213 is provided for rotating the rotary blade 220 when the combination of the main agent MA and the curing agent MB is not easily mixed due to its properties.
The switching valves 17, 18 and the metering pumps 13, 14 are integrated with the mixer 21 as described below.
[0041]
The switching valve 17 is positioned such that the surface provided with the discharge port is in contact with the front surface 221 provided with the first injection port 216 of the mixer 21 and the discharge port faces the first injection port 216. In relation, it is attached to the mixer 21.
[0042]
The switching valve 18 is also attached to the front surface 221 in such a manner that the positional relationship between the discharge port and the second injection port 217 of the mixer 21 is the same as that of the switching valve 17.
[0043]
The metering pump 13 is attached to the switching valve 17 in a state where the surface provided with the input / output port is in contact with the surface provided with the common port of the switching valve 17 and the input / output port faces the common port. Have been.
[0044]
The metering pump 14 is also attached to the switching valve 18 such that the positional relationship between the metering pump 13 and the switching valve 17 is the same as that of the metering pump 13.
Therefore, the mixer 21, the switching valves 17 and 18, and the metering pumps 13 and 14 are connected to the flow paths of the main agent MA and the hardening agent MB from the metering pumps 13 and 14 to the outlets UTA and UTB of the mixer 21 (hereinafter, the main agent MA and the hardening agent). Each of the flow paths of the agent MB is referred to as a “supply flow path”).
[0045]
In addition, the mixer 21, the switching valves 17, 18 and the metering pumps 13, 14 are compactly integrated by arranging and integrating the devices having ports to be connected to each other so as to face each other. You. Therefore, the mixing and coating device 1 can be easily attached to the manipulator of the robot, and the coating operation can be performed while the mixing and coating device 1 is moved by the manipulator according to the shape of the object to be coated. Since the mixing and coating apparatus 1 is compact, coating can be performed by a small robot.
[0046]
Next, a mixing operation using the mixing and coating apparatus 1 shown in FIG. 1 will be described.
In the operation described below, the switching valves 17 and 18 are operated by compressed air, and are provided with respective electromagnetic control valves (not shown) for controlling the operation. The on / off of these electromagnetic control valves and the servo motors of the drive units 15 and 16 are controlled by a control device (not shown).
[0047]
With the compressed air for pressurization supplied to the storage tanks 11, 12, the valves 111, 121 and the like attached to the lower parts of the storage tanks 11, 12 are operated to pump the main agent MA or the hardener MB. Thereby, the inside of the flexible tubes 19 and 20 is filled with the main agent MA or the curing agent MB. The mixing operation is started in this state.
[0048]
First, the suction process is started. The plungers of the metering pumps 13 and 14 are driven by the driving units 15 and 16 to move forward, and the main agent MA and the curing agent MB are sucked into the metering pumps 13 and 14. At this time, the switching valves 17 and 18 are in a state where the flow paths from the flexible tubes 19 and 20 to the metering pumps 13 and 14 are open, and the flow paths from the metering pumps 13 and 14 to the mixer 21 are closed. .
[0049]
In this operation, the flexible tubes 19 and 20 may be lengthened in some cases due to restrictions on the layout of the workplace or in order to widen the moving range of the mixing and coating apparatus 1. In this case, by increasing the pressure of the compressed air supplied to the storage tanks 11 and 12, it is possible to easily inhale the main agent MA and the like by the metering pumps 13 and 14.
[0050]
Predetermined amounts of the main agent MA and the curing agent MB are sucked into the metering pumps 13 and 14, and the suction process ends.
Next, the discharge step is started. The switching valves 17 and 18 close the flow paths from the flexible tubes 19 and 20 to the metering pumps 13 and 14, and open the flow paths from the metering pumps 13 and 14 to the mixer 21.
[0051]
The plungers of the metering pumps 13 and 14 driven by the driving units 15 and 16 simultaneously start returning, and the main agent MA or the curing agent MB is sent to the mixer 21 from the metering pumps 13 and 14, respectively. In the discharge step, each plunger of the metering pumps 13 and 14 moves at a constant speed and sends out the main agent MA or the hardening agent MB at a constant speed. The reciprocation of the plungers of the metering pumps 13 and 14 ends simultaneously so that the main agent MA or the hardener MB is not discharged alone.
[0052]
During the discharging step, the main agent MA and the curing agent MB are supplied to the mixer 21 without changing the mixing ratio, and the mixture mixed by the mixer 21 is discharged from the nozzle 214 while maintaining the set flow rate, and Applied to objects.
[0053]
The plungers of the metering pumps 13 and 14 alternately repeat the suction step and the discharge step, and the mixture is quantitatively discharged from the nozzle 214 of the mixer 21 with a composition according to the mixing ratio during the discharge step.
[0054]
In the mixing and applying apparatus 1 according to the present embodiment, the metering pumps 13 and 14, the switching valves 17 and 18, and the mixer 21 are arranged so that the lengths of the supply channels of the main agent MA and the curing agent MB are shortened. I have. Many parts of each supply flow path are formed inside each of the metering pump 13, the switching valve 17, and the head 212 of the mixer 21 made of a metal material or the like.
[0055]
Accordingly, since the volume of the supply channel is small and the pressure increase due to the flow resistance is small, the volume change of the main agent MA and the curing agent MB in the supply channel and the volume change of the channel do not occur. Further, even if the volume of the flow path changes, there is no adverse effect such as changing the mixing ratio with respect to the mixture.
[0056]
As a result, the main agent MA is supplied to the mixer 21 at the same time when the metering pump 13 starts the discharging operation, so that no dead time occurs. The supply of the curing agent MB to the mixer 21 similarly has no dead time.
[0057]
As described above, in the mixing and applying apparatus 1 of the present embodiment, at the same time when the metering pumps 13 and 14 start discharging, the main agent MA and the curing agent MB are supplied to the mixer 21 at the same timing and at the set mixing ratio. In other words, a mixture having a uniform composition can be applied to an object to be coated.
[0058]
Therefore, if the mixing of the resin and the curing agent is performed by using the mixing and applying device 1, the resin discharged from the mixer 21 does not include an uncured portion, and the cured resin does not have a variation in hardness. A resin having an appropriate curing time and hardness can be obtained.
[0059]
Further, in the mixing and coating operation by the conventional mixing and coating apparatus 8 using the main agent MA as a silicone resin, the back mixing is generated inside the mixer 91 by rotating the rotating blades having the helical blades inside the mixer 91, The aim was to make the mixing ratio of the resin and the curing agent uniform. However, in the mixing and applying apparatus 1 of the present embodiment, it is possible to obtain a mixture of the silicone resin and the curing agent having a uniform mixing ratio without rotating the rotary blade 220 of the mixer 21.
[0060]
In the above-described embodiment, a fixed pipe may be provided from the valves 111 and 121 attached to the lower portions of the storage tanks 11 and 12 to the mixer 21 and connected to the mixer 21 from the middle using the flexible tubes 19 and 20. The metering pumps 13 and 14 are not limited to the plunger type pumps described above, and may be small displacement rotary pumps of a positive displacement type.
[0061]
As mentioned above, the mixer 21, the switching valves 17, 18 and the metering pumps 13, 14 are preferably integrated such that the corresponding ports to be connected face each other. Further, the switching valves 17, 18 and the metering pumps 13, 14 can be integrated into the head 212 of the mixer 21. Also, the mixer 21 and the switching valves 17 and 18 and the switching valves 17 and 18 and the corresponding ports to be connected to the metering pumps 13 and 14 are not disposed so as to face each other, but are connected to each other. And the corresponding ports to be connected may be connected by a short copper tube or the like.
[0062]
The rotary blade 220 of the mixer 21 can have various shapes other than having a spiral blade, such as a shape in which a flow path is divided many times in a direction in which a fluid flows when housed in a casing. Further, the nozzle 214 of the mixer 21 may be formed by processing one end of the mixer 21 to form an integral body, or may be connected to one end of the mixer 21 having a shape that is manufactured as a separate body and is optimal for coating. The material of the mixer 21 can be various materials in consideration of the properties of the fluid to be mixed.
[0063]
The mixing and coating apparatus 1 of the present embodiment is not limited to the use of mixing and applying a resin and a curing agent, but may be a reaction, denaturation or modification by mixing two or more fluids, and the mixture is applied to an object to be coated. It can be used to terminate reactions and the like.
[0064]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the mixing and application apparatus of the fluid which obtains a uniform mixture by making the timing which at least 2 fluids are supplied to a mixer correspond can be provided.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a coating system using a mixed coating device according to an embodiment of the present invention.
FIG. 2 is a front view of the mixing and coating apparatus.
FIG. 3 is a left side view of the mixing and coating apparatus including a cross section of the metering pump.
FIG. 4 is a plan view of the mixing and coating apparatus.
FIG. 5 is an operation time chart of a metering pump in the mixing and coating apparatus.
FIG. 6 is an enlarged sectional view showing a mixer.
FIG. 7 is a plan view of a head unit.
FIG. 8 is a diagram showing a configuration of a conventional mixing / coating apparatus using a portable mixer.
[Explanation of symbols]
1 mixed coating device
11 tanks (storage tanks)
12 tanks (storage tanks)
13 1st metering pump (metering pump and drive)
14 Second metering pump (metering pump and drive)
17 First switching valve
18 Second switching valve
21 Mixer
211 mixing section
212 Mixing head (head)
214 nozzle
216 first injection port
217 Second injection port
221 Front (surface)
MA 1st fluid (base agent)
MB 2nd fluid (hardener)

Claims (3)

A mixing and coating apparatus for mixing at least two fluids of a first fluid and a second fluid and applying the mixture to an object to be coated,
A mixer,
A first metering pump for supplying the first fluid to the mixer;
A second metering pump that supplies the second fluid to the mixer,
The mixer is provided via a mixing head having a first injection port for receiving the first fluid and a second injection port for receiving the second fluid, and the mixing head. A mixing unit for mixing the first fluid and the second fluid, and a nozzle for applying the mixture to an object to be coated, and formed to be movable when applying the mixture. Yes,
The first metering pump and the second metering pump are fixedly attached to the mixing head unit, and are integrated with the mixer so as to move as the mixer moves. Fluid mixing and coating equipment. In the mixer,
A first switching valve that switches between a flow path that sends the first fluid from the tank to the first metering pump and a flow path that sends the first fluid from the first metering pump to the mixer; A second switching valve that switches between a channel that sends the second fluid from the tank to the second metering pump and a channel that sends the second fluid from the second metering pump to the mixer; Is mounted in contact with the mixer,
The first switching valve is provided with the first metering pump in contact therewith,
The fluid mixing and coating device according to claim 1, wherein the second switching valve is provided with the second metering pump in contact therewith. The mixing head portion has a substantially rectangular shape in plan view,
The first injection port and the second injection port are open on the same surface of the mixing head unit, and the first switching valve and the second switching valve are mounted in contact with the surfaces. 3. The mixing and coating apparatus for a fluid according to claim 2, wherein

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